Are deposits narrowing the cross-section and reducing the flow of your wastewater pressure pipes? With Comprex® we provide a remedy. Especially in regions with flat topography, pressure pipes are used to transport water from the pumping station to the sewage treatment plant. We ensure that their function and cost-effectiveness are maintained in the long term – efficiently and sustainably.
We have the right solution
We clean your wastewater pressure lines
- Waste water pressure lines
01
The problem
Due to the increasing use of energy- and water-saving household appliances and due to demographic change, water consumption has decreased significantly in some regions, resulting in longer residence times of wastewater in the pipelines. During the stagnation periods, deposits form on the pipe walls.
02
The consequence
Loss of cross-section, longer pumping times, pressure build-up in the pipes, odor nuisance in the area of the outlets, corrosion on sewer structures due to biogenic sulfuric acid, and finally increased energy costs due to the reduced hydraulic capacity.
03
The procedure
Wastewater pressure lines can usually be cleaned “online” during operation with Comprex®. We clean with existing or accumulated wastewater. The water is pumped slowly into the section of pipe to be cleaned and the air is added in pulses via alternating feed points. In the process, we can specifically clean special sections of the wastewater pressure lines, for example, culverts.
04
The result
Deposits are safely discharged. Bends and branches are no obstacle for Comprex®. Depending on the type of deposits and local, especially topographical conditions, we also efficiently clean longer pipelines. For you, this means: You increase the performance of your pipelines and reduce your energy costs at the same time. And since we even clean your wastewater pressure lines during operation, you don’t even have downtime.
Professional cleaning - with Comprex®
We make sure that you do not have to worry about your wastewater disposal.
Wastewater pressure pipelines, in contrast to mountainous southern Germany, occur mainly in northern Germany as part of wastewater pressure systems when gravity pipelines do not work there.
Flushing of wastewater pressure lines is initially not mandatory according to DIN EN 1671. However, if the hydraulic performance changes due to flow velocities that are too low, professional cleaning is required.
Longer residence times – more deposits
Due to the general decline in water consumption in recent years, the residence times of the wastewater in the now much too large pipes are increasing and deposits are forming. Sand and grit remain lying around.
The consequences are loss of cross-section, loss of capacity, pressure build-up, but also odor nuisance in the area of the outlets and finally corrosion of sewer structures due to biogenic sulfuric acid. Culverts in particular are critical areas when it comes to sedimentation.
Hygiene wipes and moist toilet paper are also increasingly becoming a problem if they are disposed of improperly in the toilet. This is because they are difficult to biodegrade and settle especially in smaller pipelines. These impairments are difficult or impossible to eliminate with conventional cleaning methods.
Decreasing power – increasing energy demand
With regard to energy efficiency, which is playing an increasingly important role today, cross-section-constricted piping is an important issue. This is because they require more energy and time to transport the water during normal operation and can no longer transport it fast enough during peak times. The performance of the pipeline decreases and the energy demand of the pump increases. However, measures taken at the pumping station alone are not enough to restore the wastewater pressure systems.
We have decades of experience in the municipal sector
Comprex® in wastewater pressure lines - this is how it works!
To ensure safe and energy-efficient wastewater disposal, wastewater pressure lines should be cleaned from time to time. Our patented Comprex® impulse rinsing process can be used without great effort. It reliably removes all mobilizable deposits from your wastewater pressure line – during operation.
Comprex® also cleans longer distances efficiently. Bends, branches and culverts are no obstacles in this process. In worksheet DWA-A 113 “Hydraulic Dimensioning and Performance Verification of Wastewater Pressure Systems”, the DWA rules and regulations mention the impulse flushing method as a special option for cleaning pressure pipes.
You can profit from this
The advantages of Comprex®
Mobilizable solid deposits, easily adhering deposits, screen skins and unconsolidated deposits such as sand, grit or gravel are safely discharged. Even debris in culverts is no problem for Comprex®.
Removing deposits reduces pressure loss in the pipeline - hydraulics improve. In this way, the performance and disposal reliability of the wastewater pressure line are restored.
The improved hydraulics ensure efficient pump operation. The water can flow freely again and needs less time and energy to be transported.
Comprex® cleaning for wastewater pressure pipes
Comprex® in a pumping station - a field report
The special feature of this cleaning was that it was not flushed in the direction of flow as usual. In order to collect the deposits, the pipe was shut off and cleaned against the direction of flow. The deposits were collected in a container and checked through a sight glass.
Customer quote on cleaning with Comprex®:
“Before flushing the main pumping station, we had a pump runtime of almost 20 hours and a pumping capacity of 250 m³ of wastewater. As a result of the flushing action, we were able to determine that on some days we achieve a pumping capacity of 270 m³ of wastewater with a pump runtime of 15 hours. This clearly shows an improvement in the efficiency of our system.
In addition, we would like to mention that thanks to Comprex® we were able to remove approx. 14 m³ of residue from the line that had accumulated over the years. This cleaning has helped to improve the performance of our system and prevent future problems.” (Mr. Janßen, wastewater foreman at the Jemgum municipal pumping station)
Practical examples
We regularly report on new developments and innovations. Find out more about our successful Comprex® applications.
Cleaaning blocked culverts
Professional articles and publications
