摘要
采用静态试验研究了混凝工艺对水源水中的细胞内和溶解性（细胞外）微囊藻毒素的去除效果，并初步探讨了其去除机理。试验结果表明，混凝剂投加量为25mg／L时，将原水pH值调节到5．5～6．0可有效地去除水中的细胞内微囊藻毒素，去除率可达97．4％；投加10mg／L的粉末活性炭对致嗅物质有一定的吸附效果。强化混凝工艺可显著提高对溶解性微囊藻毒素的去除效果，对MC-RR和MC-LR的去除率均达到60％～70％，原因为强化混凝工艺强化了对小分子弱疏水性有机物的去除效果。
Jar-test was conducted to study the removal effect and mechanism of intracellular and dissolved （extracellular） microcystins from raw water by coagulation processes. The results show that when pH of raw water is adjusted to 5.5 - 6.0 and coagulant of 25 mg/L is added, the intracellular microcystins can be removed effectively, with the removal rate of 97.4%. Addition of 10 mg/L PAC has adsorption effect on odorous substances. The enhanced coagulation process can effectively improve the removal effect of dissolved microcystins, with the removal rates of MC-RR and MC-LR being 60% to 70%. The reason is that the enhanced coagulation process improves the removal effect of small molecular weight hydrophobic organic matters.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第23期51-55,共5页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601130)
国家科技攻关计划重大项目(2003BA808A17)
关键词
混凝
强化混凝
微囊藻毒素
藻
coagulation
enhanced coagulation
microcystins
algae
