微电解-Fenton试剂预处理乙酰磺胺酸钾生产废水研究  

PRE-TREATMENT OF ACESULFAME-K PRODUCING WASTEWATER BY COMPLEX PROCESS MADE UP OF MICROELECTROLYSIS AND FENTON OXIDIZATION

作　　者：薛张辉[1] 李勇[1] 陈小萍[1] 张庆粉[1] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215011

出　　处：《水处理技术》2011年第9期84-87,共4页Technology of Water Treatment

摘　　要：采用铁炭微电解-Fenton氧化-混凝沉淀组合工艺处理江南某化工厂生产废水。考察了pH、H2O2投量、PAM投量及反应时间等影响因素。结果表明,在铁炭质量比为1.5、pH为2.5、反应时间为2 h的条件下,微电解对COD的去除率大于30%;向微电解出水中投加1.5 mL.L-1的H2O2(质量分数30%),进行Fenton反应40 min,COD的去除率可提高15%。调节Fenton反应出水pH为6～7、投加PAM(质量分数0.1%)1.5 mL.L-1,COD总去除率达到77%。组合工艺在最佳运行条件下对COD的去除率为40%～65%,TP的去除率达到80%以上,分别比现有运行工艺提高了30%、40%,NH3-N去除效果不明显。预处理出水满足后续生物处理的要求。Iron-carbon microelectrolysis-fenton oxidation-coagulation sedimentation process was used in treatment ofwastewater from a chemical factory in south of Yangzi River. The influence factors ofpH, H202 dosage, PAM dosage and reaction time were investigated. The results showed that,when the mass ratio of iron to carbon was 1.5, pH was 2.5 and reaction time was 2 h, the removal rate of COD by microelectrolysis was above 30%. For treatment with the Fenton reagent, when the H202（ 30% ） dosage was 1.5 mL .L1 and the reaction time was 40 min, the removal rate of COD raised by 15%. Adjust pH of fenton effluent 6-7 and the dosage of PAM （0.1% ） was 1.5 mL. L^-1, the total removal rate of COD was 77%.Under these conditions, the removal rate of COD by combined process was 40%-65% and the removal rate of TP reached more than 80%, increasing 30%,40% separately compared to the existing process. The removal rate of NH3-N was not obvious. Pretreatment effluent satisfies the request of biochemical treatment process.

关 键 词：化工废水 铁炭微电解 FENTON氧化 混凝沉淀 

分 类 号：X783[环境科学与工程—环境工程]