饮用水源突发性铅污染应急工艺的研究  

Study on Emergent Treatment for Lead Pollution in Water Source

作　　者：胡静 

机构地区：[1]重庆市设计院,重庆400013

出　　处：《重庆工商大学学报（自然科学版）》2013年第6期48-52,共5页Journal of Chongqing Technology and Business University:Natural Science Edition

摘　　要：对城市给水处理厂在不中断供水的情况下,运用现有的工艺流程,应对水源突发性铅污染进行了小试研究。试验结果显示:在所研究的混凝剂投加量范围内,PFS对Pb的去除效果明显优于PAC;原水的pH对于混凝除铅影响显著,而浑浊度对Pb的去除无明显影响;采用Ca(OH)2作为pH调节剂强化除铅效果明显优于NaOH,将原水的pH控制在9左右,可确保混凝沉淀出水的Pb浓度小于10μg/L,但需加酸对出水的pH进行回调。The bench scale testings are performed to investigate emergent treatment for lead pollution in water source by using the existing process in drinking water treatment plant under the situation not breaking off water supply. The results show that, in the range of studied coagulant dosage, Pb removal efficiency by PFS is significantly better than that by PAC. The effect of pH on lead removal by coagulation is significant, but the turbidity is not. Using Ca （OH） 2 as a pH regulator to enhance the Pb removal is better than NaOH. As a result, adjusting pH of the raw water around 9 by adding Ca （OH） 2 can ensure the concentrations of Pb in effluent below 10μg/L,but acid is needed to make the finished water at neutral pH.

关 键 词：应急处理 除铅 强化混凝 

分 类 号：O613.1[理学—无机化学]