磁种混凝-高梯度磁分离技术的印染废水处理  

TREATMENT OF PRINTING AND DYEING WASTEWATER BY MAGNETIC SEED COAGULATION-HIGH GRADIENT MAGNETIC SEPARATION

作　　者：陈文松[1] 韦朝海[1] 

机构地区：[1]华南理工大学化工与能源学院

出　　处：《水处理技术》2006年第11期58-60,65,共4页Technology of Water Treatment

摘　　要：应用自制的高梯度磁分离装置处理印染废水,结果表明,低剂量Fenton氧化-磁种混凝-高梯度磁分离技术处理色度为800倍、COD为565.0mg/L的成分复杂印染废水效果良好,色度、COD的去除率分别达到92.6%和79.5%,符合国家二级排放标准。最佳工艺条件为:pH=6,FeSO4.7H2O=250mg/L,H2O2=1.3mL/L,PAM=0.75 mg/L,磁粉加入量150mg/L,电流强度8A,水样流速2.420L/min,不锈钢丝绒填充率1.00%～1.43%。Treatment of printing and dyeing wastewater with a device of high gradient magnetic separation （HGMS） developed by the authors was carried out. The results showed that printing and dyeing wastewater containing varied chemical composition, and chromaticity, and COD of 800 and 565mg/L respectiveJy could be well cleaned by Fenton oxidation-magnetic seed coagu/ation-HGMS. The removal rate of chromaticity and COD was up to 92.6% and 79.5% respectively. The effluentcould meet the national discharge standard. The optimum technological parameters are as follows： pH=6, [FeSO4.7H2O2]=250mg/L, [H2O2]=1.3ml/L, [PAM]=0.75 mg/L, dosage of magnetic particle 150mg/L,current intensity 8A, water flow rate 2.420L/min, packing density of stainless steel wire 1.00%～ 1.43%. Recovery rate of magnetic particle was up to 90% by chemical regenerated technique in combination with physical method.

关 键 词：高梯度磁分离 印染废水 分离效果 

分 类 号：TQ028.8[化学工程]