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Study on the treatment of metaphase landfill leachate

Wu Wenji Sun Yabing Feng Jingwei Xu Lei Tian Yuanchun Li Shu(State Key Laboratory of Pollution Control and Resource Reuse,Department of Environmental Engineering,Nanjing University,Nanjing 210093)  
Treatment of landfill leachate is a focus of researchers' attention as well as a difficult problem in field of wastewater treatment.Study on the treatment of landfill leachate by separation NH_3-N-SBRcoagulation-chlorination process was carried out and reported in this paper.The optimum process conditions of the method were achieved,moreover,the effect of SBR had been intensified.The results show that COD of leachate is reduced to 93.6 mg/L from 1360 mg/L,BOD_5 is reduced to 28 mg/L from 320 mg/L,NH_3-N is reduced to(16.1 mg/L) from 1098.6 mg/L,The eliminating rate of the chroma is close to 100%.This process is feasible for the treatment of landfill leachate.
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