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Dissolved Air Flotation: Efficient Removal of Micropollutants from Stormwater Runoff

  • Rüdiger Pfeifer
  • Hermann H. Hahn
Conference paper

Abstract

Stormwater runoff washes off a considerable amount of pollutants from the surfaces of urban catchment areas. Most of the pollutants are transported particlebound and it is well known that solids of a small grain size (suspended solids) serve as their host carrier. In the traditional design, the stormwater sewer of a separate system discharges into an intermediate sedimentation tank at the outfall of the receiving water to reduce the pollutants load. Due to the extended sedimentation time of small particle, this type of stormwater treatment facility is incapable of removing finer, polluted solids fractions. A demonstration project has shown that chemical coagulation and liquid/solid separation by dissolved air flotation results in an efficient removal of pollutants and allows recovery of the natural waters.

Keywords

Efficient Removal Suspended Solid Pilot Plant Runoff Event Stormwater Runoff 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • Rüdiger Pfeifer
    • 1
  • Hermann H. Hahn
    • 1
  1. 1.University of KarlsruheKarlsruheGermany

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