Enhanced stormwater treatment:

Decentralized stormwater treatment is state of the art because it reduces the costs for urban drainage by using source control. The HydroChain™ 10,000 filtration unit has numerous advantages in comparison with other systems. The system combines a sediment trap with a large and scalable filter unit, it is easy to inspect and maintain. There is a very low head loss across the filter, inlet and outlet. Filter media is retained within the cartridges, there is no loose material in the system. Filter media has to be replaced in intervals between 3 and 5 years depending on the sites conditions. There is virtually no footprint because the system can be installed below car parks or roads. The filter media removes pollutants including PAH ́s, hydrocarbons and heavy metals. Furthermore, it binds phosphorous and ammonium from stormwater. The multi step treatment train separates solids and dissolved substances in two separate chambers. The system is ideal for car parks, roads, industrial areas. Therefore, there are three different types of filter cartridges for low traffic densities, high traffic densities and industrial estates. Highest pollutant levels in stormwater runoff can be reduced to acceptable loads for groundwater and surface waters discharges. The modular design allows the adaption to nearly every site condition.