含油循环冷却水混凝处理工艺研究  

Study on coagulation treatment process of oil-containing cooling water

作　　者：王鹏[1] 刘光利 张春玲[1] 杨岳 李常青 

机构地区：[1]兰州交通大学环境与市政工程,甘肃兰州730070 [2]中国石油兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2011年第5期453-456,465,共5页Petrochemical Technology & Application

基　　金：中国石油炼油与化工分公司资助项目(项目名称:炼油厂循环水系统排放废水回用技术;项目编号:0704A18-01)

摘　　要：采用絮凝剂硫酸铁、硫酸铝、聚合氯化铝(PAC),阳离子型聚丙烯酰胺(CPAM)对含油循环冷却水进行混凝处理,研究了絮凝剂种类及其投加量、沉降时间、搅拌条件等因素对水样处理效果的影响。结果表明,使用优选的复配絮凝剂PAC/CPAM,在PAC,CPAM投加量分别为60,1.0 mg/L、快搅转速为300 r/min、快搅时间为60 s、慢搅转速为60 r/min、慢搅时间为10 min、沉降时间为20 min的最佳条件下,水样的浊度、油含量、CODCr的去除率分别在96%8,8%6,7%以上,处理后的水质达到循环水回用标准的要求。The oil - containing cooling water was treated with Fe2 （ SO4 ） 3, Al2 （ SOn ） 3 · 18 H2 O, polyaluminiun chloride （PAC） and cationic polyacrylamide （CPAM） as flocculants, and the influences of type and level of the flocculants, settling time, stirring conditions on the treatment of water samples were studied. The results showed that with the optimized composite flocculant PAC/CPAM and under the optimal conditions of the levels of the PAC, CPAM 60,1.0 mg/L respectively, fast stirring speed 300 r/min, fast stirring time 60 s, slow mixing speed 60 r/min, slow stirring time 10 min, and settling time 20 min, the removal rates of turbidity, oil content and CODcr of the water sample were 96% , 88% , 67% respectively, and the treated water could meet the need of the standard of circulating water.

关 键 词：絮凝剂 循环冷却水 除油 混凝 复配絮凝剂 聚合氯化铝 阳离子型聚丙烯酰胺 

分 类 号：X703.1[环境科学与工程—环境工程]