针对给水厂钴、锑污染物的化学沉淀试验研究  

CHEMICAL PRECIPITATION EXPERIMENT STUDY ON WATERWORKS CONTAMINATIONS FROM COBALT AND STIBIUM

作　　者：张建国 胡小芳 袁润权 丁卫 

机构地区：[1]东江水务有限公司,广东东莞523112

出　　处：《水处理技术》2010年第11期28-30,36,共4页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项"自来水厂应急净化处理技术及工艺体系研究与示范"(2008ZX07420-005)

摘　　要：为了应对给水厂可能存在的钴、锑污染风险,研究了化学沉淀法对水中钴、锑污染物的去除效果。结果表明,当三氯化铁作混凝剂,调节pH为6.3～6.8时,锑污染物(质量浓度为0.023mg·L-1)的去除率为34%～53%;调节pH为8.7时,钴污染物(质量浓度为5.783mg·L-1)的去除率大于94%。当聚合氯化铝作混凝剂,调节pH为6.8～8.7时,锑污染物(质量浓度为0.023mg·L-1)的去除率为8%～17%;调节pH为8.8时,钴污染物(质量浓度为6.346mg·L-1)的去除率大于98%。硫化沉淀法对钴、锑污染物基本无去除效果,随着硫化钠投加量的增加,钴、锑污染物的去除效果基本维持不变。In order to solving the possible venture of cobalt and stibium contamination in waterworks,study was made on chemical precipitation treatment effect for cobalt and stibium in the article. Results showed：When ferric chloride was used for flocculation reagent,pH was 6.3～6.8,stibium contamination （concentration was 0.023 mg·L-1） removing ratio was 34%～53%; pH was about 8.7,cobalt contamination（concentration was 5.783 mg·L-1） removing ratio was more than 94%. When polyaluminium chloride was used for flocculation reagent,pH was 6.8～8.7,stibium contamination（concentration was 0.023 mg·L-1） removing ratio was 8%～17%; pH was about 8.8,cobalt contamination（concentration was 6.346 mg·L-1） removing ratio was more than 98%. Sulphide precipitation was futile for cobalt and stibium contamination basically. With sodium sulphide dosage increasing,the removing effect of cobalt and stibium contamination was changeless basically.

关 键 词：钴 锑 化学沉淀法 

分 类 号：TU991.2[建筑科学—市政工程]