Foreign water inflow challenges sewer network: Regulate inflow in drains

Wastewater networks are overwhelmed when too much water flows in: Applications for the sewer shaft offer a simple, quick and cost-effective solution.

Heavy rain or floods quickly exceed the capacity of sewers and sewage treatment plants. Even fire brigade operations can significantly increase foreign water input at certain points. The quantities are reached quickly: Heavy precipitation, for example, is defined as 17.3 liters per hour and square meter - that is one drinking glass per minute.

Fritzmeier Umwelttechnik, a manufacturer of sewer inserts and filter systems, has developed a manhole insert to protect waste water channels. The “Coalsi Aquastop” fits into all standard manhole frames below the manhole cover and is inserted in just a few simple steps. Situational deployment is therefore easily possible.

With its rubberized sealing lip, it seals the sewer wall in a form-fitting manner. If large quantities of water flow in, they close the integrated siphon. The entry into the channel is then reduced to the base outflow. When dry, the siphon opens again, leaving the sewer network open for diffusion. The impact-resistant plastic insert, which is only 261 mm deep, consists of just three parts: dust collector, sealing insert and float. A version without ventilation function is also available. The system is maintenance-free. More about this on Coalsi.de on the Internet.

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