城市污水磁化絮凝-高梯度磁分离除磷研究  

Removal of Phosphate from Urban Sewage by Magnetic Flocculation and High Gradiant Magnetic Separation

作　　者：刘吉生[1] 黄自力[1] 肖松文[2] 胡岳华[1] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]长沙矿冶研究院,湖南长沙410012

出　　处：《矿冶工程》2003年第5期24-26,共3页Mining and Metallurgical Engineering

基　　金：国家杰出青年科学基金 (5992 541 2 )资助项目

摘　　要：采用磁化絮凝 高梯度磁分离方法处理城市污水 ,研究了磁种用量、磁场强度、混凝剂用量、污水pH值和流速等工艺参数对除磷效果的影响。在磁场强度为 5 0 0kA/m ,磁种用量为 0 .3g/L ,混凝剂硫酸铝用量为 2 0 0mg/L ,助凝剂PAM用量为 2mg/L ,污水pH值为 6,流速为 3 .14cm/s时 ,磷和COD的去除率分别为 98.3 5 %和 70 .8% ,净化水含磷 0 .0 49mg/L ,COD 2 8.6mg/L。Urban sewage is treated by magnetic flocculation and high gradient magnetic separation. The technical parameters such as magnetic feed dosage, magnetic field intensity, coagulating agent dosage, pH value and flow velocity are investigated. At a magnetic field intensity of 500 kA/m, a magnetic feed dosage of 0.3 g/L, a coagulating agent(Al 2O 3) dosage of 200 mg/L, a filter-aid(PAM) dosage of 2 mg/L, a sewage pH of 6 and a flow velocity of 3.14 cm/s, phosphate and COD removeal rates are 98.35% and 70.8%, respectively, with a phosphate content of 0.049 mg/L and COD content of 28.6 mg/L in purified water.

关 键 词：城市污水 磁化絮凝 高梯度磁分离 除磷 污水处理 

分 类 号：X799.3[环境科学与工程—环境工程]