Study On Commissioning Operation Of Landfill Leachate Treatment By "RBS And Nanofiltration"

Along with sustained development of economy and society, more and morewaste produced in the daily life of people. Landfill leachate, produced in the processof landfill disposal, is one kind of organic wastewater of high concentration. Landfillleachate composition is complex, which contains a large number of organic pollutants,heavy metal ions and pathogens. There are22kinds of organic matter in the landfillleachate that have been included in Chinese and the United States EnvironmentalProtection Agency list. If the sludge is not disposed suitably, landfill leachate willcause serious pollution of surface water, groundwater and soil, serious harm to thesurrounding animals and plants, and threat to human health, normal life andproduction activities.This paper summarized the treatment technologies and our processing status oflandfill leachate. Through the on-the-spot investigation and study in changchun wastedisposal station,this paper learned the generation and characteristics of leachate.Bycomparing the main processing technology and advanced treatment process of landfillleachate,this paper identified the "RBS+nanofiltration" process for changchun wastedisposal station.Through the research on commissioning operation of landfill leachate treatmentin changchun waste disposal station, activated sludge can basically adapt to the waterquality of landfill leachate after tow mouths of acclimation, and have stable trait、highactive ingredient content and good settling properties. The average removal of CODin landfill leachate was95.90%after RBS, the average removal of ammonia nitrogenin landfill leachate was98.84%after RBS; The average removal of COD in landfillleachate was91.72%after nanofiltration, the average removal of ammonia nitrogen inlandfill leachate was89.20%after nanofiltration; The average removal of COD,ammonia nitrogen, BOD, hexavalent chromium is respectively99.68%,99.89%,99.47%,99.39%after "RBS+nanofiltration" process. The treated water conformed thenational emission standards.