PFS混凝沉淀-内电解-Fenton氧化工艺预处理老龄垃圾渗滤液  

Pretreatment of Aged Landfill Leachate by PFS Coagulation Sedimentation-Internal Electrolysis-Fenton Oxidation Process

作　　者：王硕 刘恋 熊笈 何海亮 

机构地区：[1]武汉中科水生环境工程股份有限公司湖泊水污染治理与生态修复技术国家工程实验室,湖北武汉430074

出　　处：《环境科技》2017年第4期17-21,共5页Environmental Science and Technology

摘　　要：采用PFS混凝沉淀+铁碳内电解+Fenton氧化预处理老龄垃圾渗滤液,研究了各单个反应的最佳运行条件,结果表明:PFS混凝沉淀在p H值为4.0,投加量为400 mg/L时,对垃圾渗滤液COD的去除率达到50%以上;对出水直接铁碳内电解反应,在V(Fe)/V(C)为1∶1时,对COD的去除率大于50%,色度的去除率大于70%;将铁碳内电解后的渗滤液调节p H值至4.0,投加H_2O_2形成fenton试剂,当H_2O_2的投加量为1.0 m L/L,对COD的去除率可以达到40%左右。整个工艺运行效果稳定,成本低廉,是一种有效的处理老龄垃圾渗滤液预处理工艺。The optimum operating conditions of PFS coagulation sedimentation ＋ iron-carbon internal electrolysis ＋ fenton oxidation pretreatment of aged landfill leachate were studied. The results showed that when PFS coagulation sedimentation at p H 4.0, dosage 400 mg/L, the COD removal rate of the landfill leachate was above 50%. When the Fe/C volume ratio was 1 ∶ 1,the COD removal rate was above 50%, and the chroma removal was above 70%. The removal rate of COD was about 40% when the dosage of H_2O_2 was 1.0 m L/L.The removal rate of COD was about 40%, when the p H value of leachate after iron electrolysis was adjusted to 4.0, with H_2O_2 added to form fenton reagent. The whole process is stable in operation and low in cost, which is an effective treatment for aged landfill leachate pretreatment.

关 键 词：老龄垃圾渗滤液 PFS混凝沉淀 铁碳内电解 FENTON氧化 

分 类 号：X5[环境科学与工程—环境工程]