脉冲电絮凝-混凝-吸附工艺预处理阳离子染料废水  

Study on Pretreatment of Cationic Dye Wastewater

作　　者：杨敏 施勇琪 吴胜华 王中伟 陈昆柏[2] 

机构地区：[1]杭州博世华环保技术工程有限公司,浙江杭州310003 [2]浙江工商大学,浙江杭州310018

出　　处：《污染防治技术》2008年第4期20-22,共3页Pollution Control Technology

摘　　要：采用脉冲电絮凝技术处理阳离子染料废水,出水添加混凝剂,比较了不同混凝沉淀的效果,同时考察了出水加入Fenton试剂的去除效果。实验结果表明,脉冲电絮凝反应的最佳实验条件是:进水pH值为5,停留时间为30 m in,电流为6 A;出水采用吸附剂吸附,色度的总去除率可达99.9%以上。Fenton反应可有效去除色度和COD,当双氧水的加入量为5%时,总去除率分别为99.9%和47.6%。电絮凝可有效提高废水的可生化性,BOD5/COD值由0.26提高到0.47,提高了80.8%;该设计方案的基本运行处理费用为8.44元/t废水。The electric - flocculated reactor could be used for the pretreatment of cationic dye wastewater at dye plant. The flocculation efficiencies of the coagulating reagents, including polyaluminum chloride（PAC） , ferrous sulfide, polymeric ferric sul-fate, calcium hydroxide and sorbent, were compared each other when added to the outflow wastewater from electric - flocculate. The efficiency by adding Fenton＇s reagent was also studied. The results showed that, the optimal conditions were the solution pH 5, retention time 30 min, curwrent 6 A; the color removal rate by absorbent was above 99.9% . The color and COD can be removed effectively by the Fenton＇s reaction when the quantity of H2O2 reached 5% , their total removal rates were respectively 99.9% and 47.6% . The biodegradability of wastewater was improved obviously after the Fenton＇s reaction. The BOD5/COD value was increased from 0.26 to 0.47, about 80.8% higher; the basic operation cost of this design technology was 8.44 Yuan per ton wastewater.

关 键 词：脉冲电絮凝 阳离子 染料废水 研究 

分 类 号：X703.1[环境科学与工程—环境工程] X788