水泥-石灰对Cu^(2+)、Pb^(2+)废水处理研究  

Treatment of the Wastewater Containing Cu^(2+),Pb^(2+) by Cement-Lime

作　　者：陈怡[1] 肖迎旭 樊志金 李澜[1] 徐驰[1] 谷晋川[2] 

机构地区：[1]西华大学建筑与土木工程学院 [2]西华大学食品与生物工程学院,四川成都610039

出　　处：《环境科学与技术》2016年第2期139-142,共4页Environmental Science & Technology

基　　金：国家高技术研究发展计划(863计划)项目(2012AA062504);西华大学研究生创新基金项目(ycjj2015057)

摘　　要：采用普通硅酸盐水泥和实验室用石灰混合对重金属废水进行处理研究。配置单一重金属污染物的废液,初始p H=1,投加不同配比和不同量的水泥-石灰对废液进行处理,分别在5、10、15、20 min测水泥-石灰对Cu^(2+)、Pb^(2+)的去除率,记录溶液p H值变化并加以分析。结果表明,在250 m L废液中投加1.5 g水泥和0.6 g石灰,搅拌10 min,p H在5~7之间,Cu2+的去除率达到97%,Pb2+的去除率达到95%。同时在0~10 min,随着搅拌时间的增加重金属去除率急剧提高,但是在搅拌10 min之后,去除率增长趋势趋于平缓。整个过程p H值随着搅拌时间的增加而变大。Ordinary portland cement and lime for laboratory were mixed for the treatment of heavy metal wastewater.Solutions were prepared with a single heavy metal pollutant, with the initial p H 1, different proportions and amounts of cement- lime were added for the treatment of the solutions, and the removal rates of Cu2＋, Pb2＋on 5 min, 10 min, 15 min, 20 min were measured respectively, and the changes of p H value were recorded as well. Results showed that when dosing 0.6 g of cement and 1.5 g of lime in 250 m L beaker, stirred for 10 min, with p H in the range of 5~7, the removal rate of Cu2＋and Pb2＋were 97%, 95% respectively. In 0~10 min, heavy metal removal rate increased with the stirring time increase sharply, but after stirring for 10 min, the removal rate increased but the trend to flatten. p H value of the whole process with increasing mixing time became larger.

关 键 词：水泥-石灰 去除率 PH 重金属 

分 类 号：X703[环境科学与工程—环境工程]