摘要
针对垃圾渗滤液中难降解有机物的处理效能低、成本高的问题,探讨了微波强化Fenton氧化法处理垃圾渗滤液的效能,考察了微波加热时间、微波功率、催化剂投量、pH、Fenton试剂投量等对处理效能的影响,并通过正交试验考察了各因素的综合影响。试验结果表明:在pH值为2.5、H2O2投量为6.25 mL/L、FeSO4.7H2O投量为3.972 g/L、反应时间为5 min、活性炭投量为5 g/L的条件下,可使渗滤液COD由1652 mg/L降至205 mg/L(去除率为87.5%),达到垃圾渗滤液的二级排放标准。各因素对处理效果的影响程度依次为:Fenton试剂投量>pH>催化剂投量>反应时间。与Fenton氧化法相比,微波强化Fenton氧化法可节省50%的投药量,降低了处理成本。
To address the high cost and tow efficiency in treatment of refractory organics in landfill leachate, the treatment efficiency of landfill leaehate by microwave-enhanced Fenton oxidation was studied, and the influences of microwave heating time, microwave power, dosage of catalyst, pH and Fenton reagent dosage on the treatment efficiency were investigated. The comprehensive effect of each factor was studied by orthogonal test. The results show that at pH of 2.5, H2O2 of 6.25 mL/L, FeSO4·7H20 of 3.972g/L, heating time of 5 min and activated carbon dosage of 5 g/L, the COD in landfill leachate can be reduced from 1652 mg/L to 205 mg/L and the removal rate is 87.5%, attaining the secondary discharge standard for landfill leachate. The influence degree of factors on the treatment efficiency is ： dosage of Fenton reagent 〉 pH 〉 dosage of catalyst 〉 microwave heating time. Compared with Fenton oxidation, the microwave-enhanced Fenton oxidation can save chemicals dosage by 50%, thus reducing the treatment cost.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第17期97-99,共3页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2008ZX07315-005)
