pH和腐殖酸对水合二氧化锰去除水中铅的影响  

Effect of pH and humic acid on removal of lead by hydrous manganese dioxide coagulation

作　　者：杨威[1,2] 刘丹[2,3] 王晓燕 姜黎明[5] 李圭白[6] 任南琪[6] 

机构地区：[1]哈尔滨商业大学环境工程系,哈尔滨150076 [2]哈尔滨商业大学生命科学与环境科学研究中心,哈尔滨150076 [3]国家教育部抗肿瘤天然药物工程研究中心,哈尔滨150076 [4]哈尔滨市环境监测中心站中心分析室,哈尔滨150076 [5]哈尔滨商业大学食品工程学院,哈尔滨150076 [6]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《黑龙江大学自然科学学报》2010年第6期735-738,743,共5页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省自然科学基金资助项目(E200818);黑龙江省政府博士后基金资助项目;黑龙江省教育厅科学技术面上项目(11531071)

摘　　要：以实验室配制模拟水为本底,考察了高锰酸钾还原法制备的水合二氧化锰对水中微量铅的混凝及强化混凝去除效能。探讨了水体pH值、腐殖酸对铅去除效果的影响以及水合二氧化锰去除水中重金属铅的机理。结果表明:水合二氧化锰对水中的微量铅具有显著的去除作用,1.5 mg.L-1的水合二氧化锰对实验室配水中铅的去除率达92%,作为助凝剂时,1 mg.L-1的水合二氧化锰可使铅的去除率达95%以上。中性和弱碱性条件下铅的去除率高于酸性条件,水中腐殖酸浓度升高使铅的去除率降低。水合二氧化锰够消除或减弱腐殖酸对铅的络合作用。The removal efficiency of Pb（Ⅱ）from raw water with hydrous manganese dioxide produced by reduction of KMnO4 were studied by coagulation experiments.The effects of pH value and humic acid of raw water on removal of Pb（Ⅱ） were investigated and the possible mechanism were discussed.The results showed that the hydrous manganese dioxide had excellent effect of removing Pb（Ⅱ）from raw water.The removal efficiency of Pb（Ⅱ）reached 92% with 1.5 mg·L-1 hydrous manganese dioxide.The removal efficiency of Pb（Ⅱ）reached 95% with 1 mg·L-1 hydrated manganese dioxide as a coagulant aid.A better removal was achieved in neutral and basic condition than in acid condition.The removal efficiency of lead decreased while the humic acid concentration increased,and the negative effect of humic acid on lead removal could be reduced by hydrous manganese dioxide.

关 键 词：水合二氧化锰 混凝 铅 PH值 腐殖酸 

分 类 号：TU991.2[建筑科学—市政工程]