纳米SiO_2强化混凝处理微污染海水试验研究  

Study on treatment of contaminated sea water by enhanced coagulation with nano-SiO_2

作　　者：张秀芝[1] 王静[1] 张雨山[1] 郭鸿博[1] 郝建安[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《海洋环境科学》2010年第1期121-123,共3页Marine Environmental Science

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2007-T08);国家"十一五"重大攻关课题资助项目(2006BAB03A08)

摘　　要：对纳米SiO2与FeCl3复配使用强化混凝处理低浊微污染海水进行了实验研究,探讨了纳米SiO2强化混凝处理海水的净化效果及影响因素。试验结果表明,对于低浊微污染海水,强化混凝能有效提高微污染海水的絮凝除污效果、改善絮体沉降性能、缩短沉淀时间。试验条件下,出水浊度、UV254、CODMn和TP去除率较单独投加FeCl3(20 mg/L)分别提高3.9%、6.1%、9.5%和7.3%。In this study, nano-SiO2 and FeC13 were mixed to enhance coagulation treatment of the contaminated seawater. The condition and the efficiency of enhanced coagulation using nano-SiO2 were discussed. Compared with FeCl3 , nano-SiO2 can raise the removal efficiency in the contaminated seawater. It can also improve the sedimentation performance of the flocculating constituent, shorten the process of sedimentation. Compared to only plunging FeCl3 （20 mg/L）, the removal efficiency of turbidity, UV254 , CODMn and TP of treated seawater were enhanced by 3.9% , 6.1%, 9.5%, 7.3% respectively.

关 键 词：微污染海水 纳米SIO2 三氯化铁 强化混凝 

分 类 号：X55[环境科学与工程—环境工程]