【摘要】 以南京市某生活垃圾填埋场渗滤液为研究对象,采用氨吹脱/投炭SBR/混凝沉淀工艺处理小型生活垃圾填埋场渗滤液.试验中研究了氨吹脱单元中pH值、气液比对氨氮去除的影响,探讨了投炭SBR单元中粉末活性炭浓度对COD去除率,进水氨氮浓度对氨氮及COD去除率的影响.全流程试验结果表明:该工艺对COD、BOD5、氨氮的去除率分别为89.9%,94.0%,98.7%,出水水质达到了《生活垃圾填埋场污染控制标准》(GB16889—1997)的Ⅱ级排放标准.两级氨吹脱与投炭SBR组合工艺处理低有机物浓度的小型生活垃圾填埋场渗滤液,在技术上是可行的.更多还原

【Abstract】 Process of ammonia stripping,powdered activated carbon-SBR and coagulation-sedimentation was applied to the leachate from a small-scale domestic landfill in Nanjing.Impact of pH and ratio of gas to liquid on NH3-N removal rate was studied in ammonia stripping unit,and then effect of powdered activated carbon dosage on COD(chemical oxygen demard) removal and effect of ammonia concentration of SBR(sequencing batch reactor) inflow on ammonia and COD removal were approached in biological treatment unit.Results of this process show that total removal rate of COD,BOD5 and NH4+-N is respectively 89.9%,94.0%,and 98.7%,and the effluent quality reaches Ⅱ-class criteria specified in Domestic Landfill Pollution Control Standard(GB 16889—1997).Technically,it is feasible to treat small-scale domestic landfill leachate with low concentration of organic pollutants by using process composed of two-stage ammonia stripping and powdered activated carbon-SBR.更多还原