Construction and process optimization increased the cleaning power - 40 years ago - in December 1970 - the Wupperverband Hückeswagen the sewage treatment plant had commissioned. In the sewage treatment plant effluents from Hückeswagen today, Wipperfurth and Kierspe-Rönsahl be cleaned. Photo: Wupperverband
Sewage treatment plant in operation for 40 years Hückeswagen - The wastewater treatment plant has a design capacity Hückeswagen of 48,000 population equivalents. The residents are so-called population equivalent of industry and commerce. Each year the WWTP Hückeswagen 7.5 million cubic meters of wastewater cleaned. This corresponds to the amount of water in the pre-dam Large Dhünn. On site work 8 employees and 2 apprentices. In the 40 years of existence, the demands on the cleaning performance and have therefore changed to the plant. First, the wastewater was cleaned mechanically. That is, gross pollutants, such as hygiene articles, and suspended solids such as sand have been removed.
In the late 1970s came to a further purification step, the aeration and clarifier were asked completed in 1979. The wastewater could now be treated biologically. In the aeration tanks will be removed with the help of microorganisms in the wastewater contained organic compounds such as carbon, nitrogen and the addition of atmospheric oxygen. Even some of the phosphorus that is dissolved in the waste water is bound in the aeration tank by the addition of iron salts.
In 1990, the Wupperverband another major investment in sewage treatment plant was in operation Hückeswagen: the Flockungsfiltrationsanlage. The contact filtration allows a more extensive removal of phosphorus, as it is possible in the aeration tank. The nutrients nitrogen and phosphorus in favor of a high concentration of algae growth and affect the people living in the waters of fish and microorganisms.
Expansion of the wastewater treatment plant from 1996 to 2000 - To adjust the cleaning performance of the WWTP Hückeswagen to the increased regulatory requirements, has expanded the facility from 1996 to Wupperverband extensively until 2000. In particular, the biological treatment stage was added. Through the construction of two new aeration basins, the volume of activation stage was increased by five times, thereby increasing the cleaning performance. The targeted nutrients can be removed from the wastewater. The cleaning performance of the WWTP is Hückeswagen at around 86 percent phosphorus and nitrogen at about 76 percent. Since the treated wastewater into the Wupper-blocking system - and thus in the Wupper - is introduced, the expansion project has helped to improve water quality.
Every year approximately 690,000 kilowatt hours of electricity from sewage gas - Since 2000, uses the Wupperverband in the sewage sludge digestion in the biogas Hückeswagen to generate electricity. Each year, the CHP plant approximately 690,000 kilowatt hours of electricity. This corresponds roughly to the annual requirement of 150 four-person households. The Wupperverband uses electricity directly into the system. By the self-generating about one third of the electricity demand in the wastewater treatment plant Hückeswagen.
Wupperverband - The Wupperverband was founded in 1930 with the objective of the water management tasks in the 813 km ² large catchment area to meet the Wupper on municipal boundaries. For the Association as a public company are not profit oriented, but the protection and sustainable management of water resources in central and reasonable costs and maximum performance for members and citizens.
The Wupperverband operates 12 dams, 11 sewage treatment plants, sludge incineration plant and other facilities, such as flood retention basins and rain pools. He has a total of approximately 2,300 kilometers of rivers and streams. Association members are cities and towns, counties, water utilities, industrial and commercial area in Wuppertal. Source: Wupperverband
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