Leachate treatment by the combination of photochemical oxidation with biological process
作者： In-Ock Koh , Xiaoling Chen-Hamacher , Klaus Hicke , Wolfram Thiemann
DOI: 10.1016/J.NAINR.2003.08.011
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摘要: Abstract Leachates are well known as a particular sort of problematic wastewater, both from the viewpoint ecotoxicity and treatment technique. municipal waste deposits, biologically pre-cleaned, were treated subsequently by photochemical oxidation using three different UV sources. The reactor concept was based on ‘continuous circuit reactor’ with back-mixing thin film. power 84 kW/m 3 for low pressure mercury lamp, 100 kW/m middle 30 kW/m vacuum lamp. ratio chemical oxygen demand (COD) BOD 5 reduced ca. 230 to 3–4 (in case lamp) 6 (middle lamp). After stage, leachate in an additional step activated sludge plant. this biological values COD, BOD, AOX decreased further below threshold defined legislative regulation. Ames-, umu-, alkaline filter elution-tests applied at all stages. water, independent proved be free mutagens. luminescent bacteria—green algae—as Daphnia-test each individual
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