[Objective] The research aimed to study the control of concentrated leachate with method of coagulation, ammonia stripping and Fenton oxidation processes. [ Method] A treatment process for the concentrated landfill leachate from a reverse osmosis equipment using coagulation, ammonia stripping and Fenton oxidation was developed. The effects of the composite coagulants, ammonia stripping temperature, pH, quantity of flow air, H2O2 and Fe2+ concentrations on COD and NH3-N removals were investigated. [ Result]The results showed that the optimum efficiency of coagulation and ammonia stripping could be achieved under the profiles of 6 g/L MgO and 2 g/L Ca(OH), by agitating for 24 h followed by blowing air at the speed of 6 L/(min ? L) for 4.5-5.0h at pH of 11.0-11.5. The optimistic conditions of orthogonal tests were H2O2 concentration 750 mmol/L, Fe2+ concentration 28 mmol/L, reaction time 45 min, pH 3. COD and NH3-N removal rates were 93.4% and 95.7% through the whole process. [Conclusion]This research indicated that the control of concentrated leachate with method of coagulation, ammonia stripping and Fenton oxidation processes was ideal and should be studied for next step.%[目的]研究化学混凝沉淀-吹脱-Fenton氧化法对垃圾渗滤液膜滤浓缩液的处理效果.[方法]以上海某填埋场生活垃圾渗滤液膜滤浓缩液为研究对象,研究混凝沉淀-吹脱-Fenton氧化协同处理工艺对有机物和NH3-N的去除,考察混凝剂种类、投加量、吹脱温度、空气流量、吹脱pH和H2O2浓度、Fe2浓度、氧化pH和时间等因素的影响.[结果]混凝沉淀中,添加6 g/L MgO和2 g/L Ca(OH)2混凝沉淀效果最佳.最佳吹脱试验条件确定为pH 11.0～11.5,温度≥30℃,吹脱时间为4.5～5.0h,空气流量为6 L/( min·L),吹脱效率大于80％.Fenton氧化的最优化条件为H2O2 750 mmol/L,Fe2+ 28 mmol/L,反应时间45 min,pH 3.整个工艺对COD去除率达93.4％,对NH3-N去除率达95.7％.[结论]化学混凝沉淀-吹脱- Fenton氧化法对垃圾渗滤液膜滤浓缩液的处理效果较好,值得进一步研究.
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