水源水中乐果污染物应急处理工艺的试验研究  

Emergent treatment process for Rogor pollutant in source water

作　　者：匡科[1,2,3] 袁永钦[3] 林浩添 

机构地区：[1]中国科学院广州地球化学研究所有机地球化学国家重点实验室,广东广州510640 [2]中国科学院研究生院,北京100039 [3]广州市自来水公司,广东广州510600

出　　处：《供水技术》2008年第6期36-38,共3页Water Technology

摘　　要：以乐果为目标化合物,探讨了活性炭吸附、活性炭吸附—混凝沉淀工艺以及石灰碱解—活性炭吸附—混凝沉淀三种工艺对乐果的去除效果。结果表明,乐果的去除效果随着活性炭投加量与吸附时间的增加而增加,采用活性炭吸附—常规混凝沉淀工艺对乐果的去除效果要略好于单独采用活性炭吸附,但这两种工艺都不能有效去除水中的乐果。采用石灰碱解—活性炭吸附—混凝沉淀工艺时,乐果的去除率随着石灰碱解的pH值升高而增加。当原水乐果含量为0.182mg/L,用石灰调节原水pH值为9,投加30mg/L活性炭吸附20min后,去除率达89.9%,沉淀出水乐果浓度为0.0184mg/L,满足标准要求。Removal efficiencies of Rogor were investigated with activated carbon adsorption,activated carbon adsorption-coagulation and sedimentation,lime alkaline hydrolysis-activated carbon adsorption-coagulation and sedimentation.The result showed that removal efficiencies of Rogor increased with activated carbon dosage and adsorption time.Activated carbon adsorption-conventional coagulation and sedimentation was better than activated carbon adsorption,but both of them were not very effective.Removal rate of Rogor increased with pH rising of lime by lime alkaline hydrolysis-activated carbon adsorption-coagulation and sedimentation.Removal rate of Rogor could be 89.9% with 30 mg/L activated carbon adsorption for 20 min when the concentration of Rogor was 0.182 mg/L and pH of raw water was adjusted to 9,the concentration of Rogor after sedimentation was 0.018 4 mg/L,and it could meet the requirement of standards.

关 键 词：乐果 活性炭吸附 混凝沉淀 石灰碱解 

分 类 号：TU991.27[建筑科学—市政工程]