In future, the rainwater from all roof and floor surfaces, all sealed surfaces, no longer discharged into the municipal channel and thus to the treatment plant, but cleaned and the Bochum waters, here the neighboring Grummer stream fed.
The company invested 350 000 euros in their new facility.
The company picked up the idea. The water is first passed the sealed surfaces with commissioning in late August to a separation plant where it is cleaned of particulate matter, but also volatile substances such as oil, which always occur in traffic. "Only the purified water is then routed. Underground trenches (buffer storage) to be installed for each side of a road a system "