Abwasserinfiltration

Abwasserinfiltration refers to the unwanted entry of groundwater or surface water into sewer systems. This can occur through cracks, leaks, or faulty joints in pipes, manholes, and other components of the underground infrastructure. Infiltration is a common problem in aging sewer systems and can significantly impact their performance and efficiency.

The influx of external water dilutes the wastewater, reducing its concentration and increasing the overall volume that needs to be treated. This can lead to overloaded wastewater treatment plants, requiring them to process larger quantities of water, which in turn increases operational costs and energy consumption. In some cases, the increased volume might exceed the treatment plant's capacity, potentially leading to the discharge of partially treated or untreated wastewater into receiving bodies of water, causing pollution and environmental damage.

Furthermore, infiltration can exacerbate problems like sewer surcharges and overflows, especially during periods of heavy rainfall. The added volume can push wastewater levels higher, increasing the risk of backups into properties or spills into the environment. Addressing infiltration often involves extensive inspection, repair, and rehabilitation of the sewer network. Techniques such as pipe lining, joint sealing, and manhole rehabilitation are employed to prevent further water ingress and maintain the integrity of the sewer system.