The Experimental Study on Landfill Leachate Treatment by Coagulation-Sedimentation + Electro-Oxidation Joint Reactor

Abstract:

The technology used the coagulation-sedimentation + electro-oxidation joint reactor has been studied to treat landfill leachate. First adding FeCl30.4g/L into all leachate for coagulation and sedimentation, its CODcr elimination rate can achieve 35%, but does have no effect on ammonia nitrogen. Then using electro-oxidation reactor to deal with effluent water, the reaction order of electro-oxidation reactor is first-level, as the reaction conditions are 20mA/cm2 of electric current density, 140min of reaction time, the leachate CODcr elimination rate can reach to above 90%, the ammonia nitrogen elimination rate meets to 98% around. Using coagulation-sedimentation + electro coagulation joint reactor to treat landfill leachate can get stable effluent water quality with good treatment effect, has very high elimination efficiency of CODcr and ammonia nitrogen. It is a suitable treatment technology for landfill leachate.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1472-1477
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1472
• Online since: February 2013
• Authors: Tao Yu, Tao Huang, Yin Xi Pan, Lin Hai Yang
• Keywords: Coagulation-Sedimentation, Electro-Oxidation Reactor, Landfill Leachate, Refractory Organics

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