SBR法处理垃圾渗滤液及其同时硝化反硝化生物脱氮研究

采用SBR系统处理城市垃圾渗滤液，研究了不同C／N、130和MLSS对同时硝化反硝化脱氮效率的影响。结果表明：总氮去除率随着C／N、MLSS升高而上升；DO越低，总氮去除率越高；当进水CODCr与NH3-N浓度分别为420mg／L和112mg／L,DO和MLSS分别为1．5mg／L和5016mg／L时，CODCr、NH3-N及TN去除率分别为81．54％、96．57％和46．66％。根据试验结果，对同时硝化反硝化一个代表周期作了分析。

Research on Treatment of Landfill Leachate by Simultaneous Nitrification and Denitrification in SBR System

Urban landfill leachate was treated by sequencing batch reactor(SBR) system.The influence of various C/ N,DO and MLSS concentrations on the process of simultaneous nitrification and denitrification was studied.The results show that under the(experimental) conditions the removal rate of total nitrogen had a tendency to rise with the increase of C/ N and MLSS.In addition,the lower the DO,the higher the nitrogen removal rate.When the concentrations of COD_(Cr),NH_3N,DO and MLSS were 420 mg/ L,112 mg/ L,1.5 mg/ L and 5016 mg/ L,respectively,in influent,the removal rates of COD_(Cr),NH_3-N and TN were 81.54%,96.57% and 46.66% respectively.One typical cycle of SND was analyzed on the basis of the results.