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Moeglichkeiten einer naturnahen Regenwasserbewirtschaftung in Siedlungsgebieten. Teilprojekt: Naturnahe Regenwasserbewirtschaftung aus der Sicht des Boden- und Grundwasserschutzes Abschlussbericht

By F. Remmler and Schwerte (Germany) Institut fuer Wasserforschung GmbH

Abstract

For a sustainable storm water management the storm water runoff of different kinds of surfaces shall be infiltrated into the underground and groundwater. The main research aspect of this project was the question, weather and in which cases storm water infiltration is sustainable and environmentally sound. At first the pollution of different kinds of surface runoff were characterized. The investigations identified many chemical substances like heavy metals, oils, aromatic hydrocarbons, PAH's and salts as components of storm water runoff. Then a basic approach was developed for the infiltration of different kinds of surface runoff to reduce the potential risks of groundwater pollution. The granting of permission to infiltrate depends on the quality of the storm water runoff and the kind of treatment facilities. The unpolluted and less polluted fractions can infiltrated if some requirements related to the location, the structure and the operation of the infiltration system are fulfilled. Also investigations of the materials used in infiltration systems were carried out to control weather they are environmentally sound. Only materials should be allowed, which cause no detrimental changes to the quality of soil, seepage water and groundwater in long-term operation. For estimating potential accumulation and mobilization effects of chemical substances in alternative drainage systems the top soil of several infiltration systems was observed. For minimizing the risks of remobilization of already adsorbed pollutants at a loss of the cleaning potential it is important to define fundamental criteria for controlling the function and operation of the infiltration systems. An ecologically tenable infiltration of unpolluted and less polluted storm water runoff can only be achieved by exploitation and optimizing of the cleaning and adsorption potential of the infiltration technologies. For long-term protection of soil and groundwater this will only function if, in addition, the requirements for the location, structure and operation are fulfilled. (orig.)SIGLEAvailable from TIB Hannover: F99B582 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Topics: 03C - Water pollution, oil pollution, sewage treatment, water treatment, 08B - Hydrology, limnology, STORM WATER RUNOFF, STORM WATER MANAGEMENT, INFILTRATION OF STORM WATER RUNOFF, SOIL- AND GROUNDWATER PROTECTION
Year: 1999
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Provided by: OpenGrey Repository
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