环境工程学报2016，Vol.10Issue(10)：5413-5419,7.DOI:10.12030/j.cjee.201505063
搅拌速率和时间对强化混凝去除微污染水中镍(Ⅱ)及有机物的影响
Effect of stirring speed and time on removal of nickel(Ⅱ) and organic matter in micro-polluted water by enhanced coagulation
摘要
Abstract
A static trial was performed to study the effect of enhanced coagulation though the addition of potassium ferrate,with flocculation stirring speed,flocculation time,and raw water turbidity controlled to strengthen the nickel (Ⅱ) and organics removal.The results showed that flocculation stirring speed,flocculation time,and raw water turbidity were key influences on nickel (Ⅱ) and organics removal efficiency.The first level of flocculation stirring speed was 200 r · min-1,flocculation time was 2 min;the second level of flocculation stirring speed was 40 r · min-1,flocculation time was 10 min;and raw water turbidity was 36.7 NTU.The nickel concentration in the effluent was 0.018 mg · L-1,and the removal rate of the nickel (Ⅱ),TOC,and turbidity were 98.2％,58.8％,and 73.8％,respectively,when the nickel (Ⅱ) and TOC concentrations were 1 mg · L-1 and 10 mg· L-1,respectively,in the raw water.These levels satisfied the demand of the Hygienic Standard for Drinking Water.Potassium-ferrate-enhanced coagulation can be used as an effective treatment for nickel pollution in water supply plants.关键词
强化混凝/镍/搅拌速度/絮凝时间/原水浊度Key words
enhanced coagulation/nickel/stirring speed/flocculation time/raw water turbidity分类
资源环境引用本文复制引用
员建,栾萌竹,孙涛,苑宏英..搅拌速率和时间对强化混凝去除微污染水中镍(Ⅱ)及有机物的影响[J].环境工程学报,2016,10(10):5413-5419,7.基金项目
国家自然科学基金资助项目(51308374) （51308374）
住房和城乡建设部研究开发项目(2012-k7-20) （2012-k7-20）
天津市自然科学基金一般项目(12JCYBJC14800) （12JCYBJC14800）
