摘要
采用烧杯实验对桂林市自来水厂突发性Pb2+污染应急处理技术进行了研究。结果表明:自来水厂现行工艺以及多年平均PAC投加量条件下,能处理的进水最大Pb2+浓度为0.02 mg/L;改变混凝剂组分,可以使进水Pb2+浓度超标4倍的出水水质达标;投加PAM可以提高Pb2+去除效果,能使Pb2+浓度0.1 mg/L的原水经处理后出水水质达标。使出水达标的最小混凝剂投加量与进水Pb2+浓度的关系为y=-1 141.4x2+296.17x-3.084 9;在保证出水残余Pb2+浓度达到《生活饮用水卫生标准》(GB 5749—2006)要求的条件下,根据此式计算出不同原水Pb2+浓度下的最小药剂投加量,为桂林市饮用水源突发性Pb2+污染应急处理提供依据。
Emergency treatment for drinking water sudden pollution is studied by beaker experiment.In the condition of polyaluminium chloride(PAC) average dosage,the water plant can handle the concentration of Pb2+ of 0.02 mg/L.Changing the composition of coagulant and increasing the polyacrylamide(PAM) can improve the removal of Pb2+.To make the water up to the standard,the relationship between the minimum coagulant and the concentration of Pb2+ in influent water is y=-1 141.4x2+296.17x-3.084 9(mg/L) in the condition of appropriate component of coagulants and dosage of PAM.The relationship between Pb2+ concentration in raw water and the minimum drug dosage is significant to ensure the residual Pb2+ concentration up to the drinking water health standards(GB 5749-2006),providing Pb2+ pollution emergency treatment for drinking water source in Guilin.
出处
《桂林理工大学学报》
CAS
北大核心
2013年第1期146-150,共5页
Journal of Guilin University of Technology
基金
广西壮族自治区投资项目评审中心项目(20111002)
广西城乡规划设计院项目(20111005)
关键词
突发性Pb2+污染
应急处理技术
饮用水源
混凝沉淀
桂林
sudden pollution of lead
emergency treatment
drinking water
coagulating sedimentation
Guilin