The customer order\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tProblem<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tSludge lines overgrown with debris\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tDeposit formation in wastewater treatment plants often leads to increased operating expenses. This is also the case with our customer. Within three months, the floating sludge lines leading from the primary clarifiers became so overgrown with greasy deposits that intensive cleaning was necessary.<\/p>\n
However, this cleaning, which had previously been carried out manually, meant a high level of personnel and time expenditure on a quarterly basis. With several people, the lines had to be opened and cleaned over 4 days under difficult working conditions in order to restore the hydraulic capacity.<\/p>\n
The innovative approach of those responsible: supplement the previous procedures with cleaning with Comprex\u00ae.<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Floating sludge lines<\/li>
- Deposit formation<\/li>
- Increased effort in operating the lines<\/li>
- Manual cleaning with high personnel and time requirements<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"Ablagerungen_Schlammleitung.jpg\"](\"https:\/\/comprex.de\/wp-content\/uploads\/elementor\/thumbs\/Ablagerungen_Schlammleitung-pu13z2ndmbdt2s9a6r67u6cgatlsvfewz93pr1o56o.jpg\" "\\"Ablagerungen_Schlammleitung.jpg\\"")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFirst test cleaning<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tAfter an initial meeting in early 2019, it was decided to conduct a first test week with Comprex\u00ae, supported by the use of rock salt as a solid. One month after manual cleaning, on-site test cleanings already showed high effectiveness. The deposits of one month could be largely removed.<\/p>\n
The next batch of test cleaning – this time without rock salt addition – after two months of deposit formation was of limited effectiveness.<\/p>\n
After the pipes had clogged up to the maximum over a period of four months, the attempt to clean them manually using Comprex\u00ae in combination with the use of rock salt also failed to produce satisfactory results.<\/p>\n
The interim conclusion: Comprex\u00ae promises success with correspondingly short cleaning cycles. Already here it became apparent that cleaning would be required at least once a month, but that the costs in the form of cleaning as a service for the provision of manual cleaning would not be sustainable.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tThe challenge\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe challenge, however, was to permanently slow down or even prevent deposit formation. This gave rise to the idea of permanently integrating a Comprex\u00ae unit into the existing cleaning system on site<\/b>. To enable shorter cleaning cycles, the operator was provided with the prototype of a stationary Comprex\u00ae module<\/b> (SCM). Different cleaning programs should be tested on different pipelines over several months and compared with each other.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Regular cleaning should prevent or at least slow down deposit formation<\/li>
- First test cleanings promising, but cleaning interval still too long<\/li>
- Idea: Integrate stationary Comprex\u00ae technology<\/li>
- Provision prototype SCM for several months<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_SCM.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tImplementation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tIntegration of the stationary Comprex\u00ae module for pilot operation\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tTogether with those responsible, it was worked out in advance at which points in the pipe network the stationary Comprex\u00ae module could be used and firmly integrated into the cleaning sequence.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_Plan.png\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_SCM_drin.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_SCM_2.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFor 13-15 weeks, different lines were now cleaned with Comprex\u00ae at different intervals. After five and after another six weeks, the lines were opened to document the interim status.<\/div>\n <\/div>\nThe following figures show examples of the various line sections after 5 weeks of test operation. Various cleaning programs are stored in the Comprex\u00ae unit, which are used for the respective assigned pipe section.<\/p>\n
The pipelines of two other primary sedimentation tanks (East 1+2) as well as the pipeline into the discharge basin of the primary sedimentation tank East 2 were flushed weekly. For comparison, that pipe was flushed into the discharge basin of the East 1 primary clarifier every 14 days. A primary settling tank (west) was used as a reference, which was not cleaned at all during this time.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tInterim results<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_7_Tage.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_14_Tage.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Klaeranlage_ohne.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Cleaning interval: 7 days<\/li>
- Cleaning interval: 14 days<\/li>
- Without cleaning<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/p>\nThe result shows: Although the coating could not be completely removed in any section of the pipeline, lower coating thicknesses could be achieved with weekly flushing. The pipe with 14-day flushing has significantly greater deposit thicknesses.<\/div>\n <\/div>\nBased on these results, it was decided to clean the lines on a weekly basis in the future. The cleaning programs set for the individual sections were checked and adapted by a HAMMANN project engineer.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tResult of Comprex\u00ae cleaning<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\n\t\t\t\t\tInterim conclusion and recommendations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Gruppe-665.png\")
<\/figure>Further reduce cleaning intervals<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>ideally regular short cleaning<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>Optimization of the piping system<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tIn the period between October and the end of December 2020, weekly preventive Comprex\u00ae cleanings of the entire scum system of the East primary sedimentation were carried out, while West continued to run as a reference in normal operation (without interim cleaning).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFurther test cleaning with the Stationary Comprex\u00ae Module<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier east<\/h5>\nweekly Comprex\u00ae cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier west<\/h5>\nWithout cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Schwimmschlamm_Ost_1.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Schwimmschlamm_Ost_3.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Schwimmschlamm_West_1.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Schwimmschlamm_West_2.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe weekly cleanings in the floating sludge pipes of the primary settling tanks east were able to sustainably reduce the grease deposits there by the end of December, while thick grease deposits now adhere in the reference pipes of the primary settling tanks west.<\/p>\n
It was shown that with a weekly cleaning rhythm, no new layers of deposits could build up. The East lines could be kept clear for over 13 weeks. As a result, weekly cleanings with Comprex\u00ae are sufficient to replace the feat of manual cleaning at high personnel and time cost.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tOutlook for the further procedure<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tOn the part of the customer the following boundary conditions apply:<\/p>\n
\n- only one basin can be cleaned at a time in order to guarantee the full plant capacity<\/li>\n
- the water level of the pool to be cleaned must be lowered accordingly<\/li>\n<\/ul>\n
For this reason, the integration of a single Comprex\u00ae unit is sufficient for cleaning the four primary settling tanks. Although the Comprex\u00ae pulses are to be fed directly into the pipeline to be cleaned, the connection points of the floating sludge lines West and East are only 5 m apart, so that only short connecting lines have to be installed for VKB-West.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t![\"\"](\"https:\/\/comprex.de\/wp-content\/uploads\/2022\/08\/Schwimmschlammleitungen-1024x768.jpg\")
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t
Problem<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tSludge lines overgrown with debris\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tDeposit formation in wastewater treatment plants often leads to increased operating expenses. This is also the case with our customer. Within three months, the floating sludge lines leading from the primary clarifiers became so overgrown with greasy deposits that intensive cleaning was necessary.<\/p>\n
However, this cleaning, which had previously been carried out manually, meant a high level of personnel and time expenditure on a quarterly basis. With several people, the lines had to be opened and cleaned over 4 days under difficult working conditions in order to restore the hydraulic capacity.<\/p>\n
The innovative approach of those responsible: supplement the previous procedures with cleaning with Comprex\u00ae.<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Floating sludge lines<\/li>
- Deposit formation<\/li>
- Increased effort in operating the lines<\/li>
- Manual cleaning with high personnel and time requirements<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFirst test cleaning<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tAfter an initial meeting in early 2019, it was decided to conduct a first test week with Comprex\u00ae, supported by the use of rock salt as a solid. One month after manual cleaning, on-site test cleanings already showed high effectiveness. The deposits of one month could be largely removed.<\/p>\n
The next batch of test cleaning – this time without rock salt addition – after two months of deposit formation was of limited effectiveness.<\/p>\n
After the pipes had clogged up to the maximum over a period of four months, the attempt to clean them manually using Comprex\u00ae in combination with the use of rock salt also failed to produce satisfactory results.<\/p>\n
The interim conclusion: Comprex\u00ae promises success with correspondingly short cleaning cycles. Already here it became apparent that cleaning would be required at least once a month, but that the costs in the form of cleaning as a service for the provision of manual cleaning would not be sustainable.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tThe challenge\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe challenge, however, was to permanently slow down or even prevent deposit formation. This gave rise to the idea of permanently integrating a Comprex\u00ae unit into the existing cleaning system on site<\/b>. To enable shorter cleaning cycles, the operator was provided with the prototype of a stationary Comprex\u00ae module<\/b> (SCM). Different cleaning programs should be tested on different pipelines over several months and compared with each other.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Regular cleaning should prevent or at least slow down deposit formation<\/li>
- First test cleanings promising, but cleaning interval still too long<\/li>
- Idea: Integrate stationary Comprex\u00ae technology<\/li>
- Provision prototype SCM for several months<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tImplementation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tIntegration of the stationary Comprex\u00ae module for pilot operation\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tTogether with those responsible, it was worked out in advance at which points in the pipe network the stationary Comprex\u00ae module could be used and firmly integrated into the cleaning sequence.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFor 13-15 weeks, different lines were now cleaned with Comprex\u00ae at different intervals. After five and after another six weeks, the lines were opened to document the interim status.<\/div>\n <\/div>\nThe following figures show examples of the various line sections after 5 weeks of test operation. Various cleaning programs are stored in the Comprex\u00ae unit, which are used for the respective assigned pipe section.<\/p>\n
The pipelines of two other primary sedimentation tanks (East 1+2) as well as the pipeline into the discharge basin of the primary sedimentation tank East 2 were flushed weekly. For comparison, that pipe was flushed into the discharge basin of the East 1 primary clarifier every 14 days. A primary settling tank (west) was used as a reference, which was not cleaned at all during this time.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tInterim results<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Cleaning interval: 7 days<\/li>
- Cleaning interval: 14 days<\/li>
- Without cleaning<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/p>\nThe result shows: Although the coating could not be completely removed in any section of the pipeline, lower coating thicknesses could be achieved with weekly flushing. The pipe with 14-day flushing has significantly greater deposit thicknesses.<\/div>\n <\/div>\nBased on these results, it was decided to clean the lines on a weekly basis in the future. The cleaning programs set for the individual sections were checked and adapted by a HAMMANN project engineer.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tResult of Comprex\u00ae cleaning<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\n\t\t\t\t\tInterim conclusion and recommendations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>Further reduce cleaning intervals<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>ideally regular short cleaning<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>Optimization of the piping system<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tIn the period between October and the end of December 2020, weekly preventive Comprex\u00ae cleanings of the entire scum system of the East primary sedimentation were carried out, while West continued to run as a reference in normal operation (without interim cleaning).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFurther test cleaning with the Stationary Comprex\u00ae Module<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier east<\/h5>\nweekly Comprex\u00ae cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier west<\/h5>\nWithout cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe weekly cleanings in the floating sludge pipes of the primary settling tanks east were able to sustainably reduce the grease deposits there by the end of December, while thick grease deposits now adhere in the reference pipes of the primary settling tanks west.<\/p>\n
It was shown that with a weekly cleaning rhythm, no new layers of deposits could build up. The East lines could be kept clear for over 13 weeks. As a result, weekly cleanings with Comprex\u00ae are sufficient to replace the feat of manual cleaning at high personnel and time cost.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tOutlook for the further procedure<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tOn the part of the customer the following boundary conditions apply:<\/p>\n
\n- only one basin can be cleaned at a time in order to guarantee the full plant capacity<\/li>\n
- the water level of the pool to be cleaned must be lowered accordingly<\/li>\n<\/ul>\n
For this reason, the integration of a single Comprex\u00ae unit is sufficient for cleaning the four primary settling tanks. Although the Comprex\u00ae pulses are to be fed directly into the pipeline to be cleaned, the connection points of the floating sludge lines West and East are only 5 m apart, so that only short connecting lines have to be installed for VKB-West.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t
Sludge lines overgrown with debris\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tDeposit formation in wastewater treatment plants often leads to increased operating expenses. This is also the case with our customer. Within three months, the floating sludge lines leading from the primary clarifiers became so overgrown with greasy deposits that intensive cleaning was necessary.<\/p>\n
However, this cleaning, which had previously been carried out manually, meant a high level of personnel and time expenditure on a quarterly basis. With several people, the lines had to be opened and cleaned over 4 days under difficult working conditions in order to restore the hydraulic capacity.<\/p>\n
The innovative approach of those responsible: supplement the previous procedures with cleaning with Comprex\u00ae.<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Floating sludge lines<\/li>
- Deposit formation<\/li>
- Increased effort in operating the lines<\/li>
- Manual cleaning with high personnel and time requirements<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFirst test cleaning<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tAfter an initial meeting in early 2019, it was decided to conduct a first test week with Comprex\u00ae, supported by the use of rock salt as a solid. One month after manual cleaning, on-site test cleanings already showed high effectiveness. The deposits of one month could be largely removed.<\/p>\n
The next batch of test cleaning – this time without rock salt addition – after two months of deposit formation was of limited effectiveness.<\/p>\n
After the pipes had clogged up to the maximum over a period of four months, the attempt to clean them manually using Comprex\u00ae in combination with the use of rock salt also failed to produce satisfactory results.<\/p>\n
The interim conclusion: Comprex\u00ae promises success with correspondingly short cleaning cycles. Already here it became apparent that cleaning would be required at least once a month, but that the costs in the form of cleaning as a service for the provision of manual cleaning would not be sustainable.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tThe challenge\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe challenge, however, was to permanently slow down or even prevent deposit formation. This gave rise to the idea of permanently integrating a Comprex\u00ae unit into the existing cleaning system on site<\/b>. To enable shorter cleaning cycles, the operator was provided with the prototype of a stationary Comprex\u00ae module<\/b> (SCM). Different cleaning programs should be tested on different pipelines over several months and compared with each other.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Regular cleaning should prevent or at least slow down deposit formation<\/li>
- First test cleanings promising, but cleaning interval still too long<\/li>
- Idea: Integrate stationary Comprex\u00ae technology<\/li>
- Provision prototype SCM for several months<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tImplementation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tIntegration of the stationary Comprex\u00ae module for pilot operation\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tTogether with those responsible, it was worked out in advance at which points in the pipe network the stationary Comprex\u00ae module could be used and firmly integrated into the cleaning sequence.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFor 13-15 weeks, different lines were now cleaned with Comprex\u00ae at different intervals. After five and after another six weeks, the lines were opened to document the interim status.<\/div>\n <\/div>\nThe following figures show examples of the various line sections after 5 weeks of test operation. Various cleaning programs are stored in the Comprex\u00ae unit, which are used for the respective assigned pipe section.<\/p>\n
The pipelines of two other primary sedimentation tanks (East 1+2) as well as the pipeline into the discharge basin of the primary sedimentation tank East 2 were flushed weekly. For comparison, that pipe was flushed into the discharge basin of the East 1 primary clarifier every 14 days. A primary settling tank (west) was used as a reference, which was not cleaned at all during this time.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tInterim results<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t- Cleaning interval: 7 days<\/li>
- Cleaning interval: 14 days<\/li>
- Without cleaning<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/p>\nThe result shows: Although the coating could not be completely removed in any section of the pipeline, lower coating thicknesses could be achieved with weekly flushing. The pipe with 14-day flushing has significantly greater deposit thicknesses.<\/div>\n <\/div>\nBased on these results, it was decided to clean the lines on a weekly basis in the future. The cleaning programs set for the individual sections were checked and adapted by a HAMMANN project engineer.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tResult of Comprex\u00ae cleaning<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\n\t\t\t\t\tInterim conclusion and recommendations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>Further reduce cleaning intervals<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>ideally regular short cleaning<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/figure>Optimization of the piping system<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tIn the period between October and the end of December 2020, weekly preventive Comprex\u00ae cleanings of the entire scum system of the East primary sedimentation were carried out, while West continued to run as a reference in normal operation (without interim cleaning).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tFurther test cleaning with the Stationary Comprex\u00ae Module<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier east<\/h5>\nweekly Comprex\u00ae cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tFloating sludge line primary clarifier west<\/h5>\nWithout cleaning<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tThe weekly cleanings in the floating sludge pipes of the primary settling tanks east were able to sustainably reduce the grease deposits there by the end of December, while thick grease deposits now adhere in the reference pipes of the primary settling tanks west.<\/p>\n
It was shown that with a weekly cleaning rhythm, no new layers of deposits could build up. The East lines could be kept clear for over 13 weeks. As a result, weekly cleanings with Comprex\u00ae are sufficient to replace the feat of manual cleaning at high personnel and time cost.
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\tOutlook for the further procedure<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\tOn the part of the customer the following boundary conditions apply:<\/p>\n
\n- only one basin can be cleaned at a time in order to guarantee the full plant capacity<\/li>\n
- the water level of the pool to be cleaned must be lowered accordingly<\/li>\n<\/ul>\n
For this reason, the integration of a single Comprex\u00ae unit is sufficient for cleaning the four primary settling tanks. Although the Comprex\u00ae pulses are to be fed directly into the pipeline to be cleaned, the connection points of the floating sludge lines West and East are only 5 m apart, so that only short connecting lines have to be installed for VKB-West.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t
Deposit formation in wastewater treatment plants often leads to increased operating expenses. This is also the case with our customer. Within three months, the floating sludge lines leading from the primary clarifiers became so overgrown with greasy deposits that intensive cleaning was necessary.<\/p>\n
However, this cleaning, which had previously been carried out manually, meant a high level of personnel and time expenditure on a quarterly basis. With several people, the lines had to be opened and cleaned over 4 days under difficult working conditions in order to restore the hydraulic capacity.<\/p>\n
The innovative approach of those responsible: supplement the previous procedures with cleaning with Comprex\u00ae.<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t After an initial meeting in early 2019, it was decided to conduct a first test week with Comprex\u00ae, supported by the use of rock salt as a solid. One month after manual cleaning, on-site test cleanings already showed high effectiveness. The deposits of one month could be largely removed.<\/p>\n The next batch of test cleaning – this time without rock salt addition – after two months of deposit formation was of limited effectiveness.<\/p>\n After the pipes had clogged up to the maximum over a period of four months, the attempt to clean them manually using Comprex\u00ae in combination with the use of rock salt also failed to produce satisfactory results.<\/p>\n The interim conclusion: Comprex\u00ae promises success with correspondingly short cleaning cycles. Already here it became apparent that cleaning would be required at least once a month, but that the costs in the form of cleaning as a service for the provision of manual cleaning would not be sustainable. The challenge, however, was to permanently slow down or even prevent deposit formation. This gave rise to the idea of permanently integrating a Comprex\u00ae unit into the existing cleaning system on site<\/b>. To enable shorter cleaning cycles, the operator was provided with the prototype of a stationary Comprex\u00ae module<\/b> (SCM). Different cleaning programs should be tested on different pipelines over several months and compared with each other.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t Together with those responsible, it was worked out in advance at which points in the pipe network the stationary Comprex\u00ae module could be used and firmly integrated into the cleaning sequence.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t The following figures show examples of the various line sections after 5 weeks of test operation. Various cleaning programs are stored in the Comprex\u00ae unit, which are used for the respective assigned pipe section.<\/p>\n The pipelines of two other primary sedimentation tanks (East 1+2) as well as the pipeline into the discharge basin of the primary sedimentation tank East 2 were flushed weekly. For comparison, that pipe was flushed into the discharge basin of the East 1 primary clarifier every 14 days. A primary settling tank (west) was used as a reference, which was not cleaned at all during this time.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t Based on these results, it was decided to clean the lines on a weekly basis in the future. The cleaning programs set for the individual sections were checked and adapted by a HAMMANN project engineer.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t Result of Comprex\u00ae cleaning<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t In the period between October and the end of December 2020, weekly preventive Comprex\u00ae cleanings of the entire scum system of the East primary sedimentation were carried out, while West continued to run as a reference in normal operation (without interim cleaning).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t The weekly cleanings in the floating sludge pipes of the primary settling tanks east were able to sustainably reduce the grease deposits there by the end of December, while thick grease deposits now adhere in the reference pipes of the primary settling tanks west.<\/p>\n It was shown that with a weekly cleaning rhythm, no new layers of deposits could build up. The East lines could be kept clear for over 13 weeks. As a result, weekly cleanings with Comprex\u00ae are sufficient to replace the feat of manual cleaning at high personnel and time cost. On the part of the customer the following boundary conditions apply:<\/p>\n For this reason, the integration of a single Comprex\u00ae unit is sufficient for cleaning the four primary settling tanks. Although the Comprex\u00ae pulses are to be fed directly into the pipeline to be cleaned, the connection points of the floating sludge lines West and East are only 5 m apart, so that only short connecting lines have to be installed for VKB-West.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\tFirst test cleaning<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\tThe challenge\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\tCleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Implementation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Integration of the stationary Comprex\u00ae module for pilot operation\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\tInterim results<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\tInterim conclusion and recommendations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
<\/figure>Further reduce cleaning intervals<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
<\/figure>ideally regular short cleaning<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
<\/figure>Optimization of the piping system<\/h4><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
Cleaning with the Comprex\u00ae process\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Further test cleaning with the Stationary Comprex\u00ae Module<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
Floating sludge line primary clarifier east<\/h5>\n
Floating sludge line primary clarifier west<\/h5>\n
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
<\/b><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\tOutlook for the further procedure<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t