水源水中典型化学品突发污染的应急处理  

Emergent Treatment of Source Water Contaminated by Representative Chemicals

作　　者：陈蓓蓓[1] 高乃云[1] 鲁文敏[1] 尚亚波 秦祖群 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]镇江市自来水公司,镇江212001

出　　处：《环境科学》2009年第6期1632-1638,共7页Environmental Science

基　　金：江苏省科技厅社会发展计划项目(BS006039);“十一五”国家科技支撑计划项目(2006BAJ08B06,2007BAC26B03)

摘　　要：针对被典型化学品双酚A（BPA）与邻苯二甲酸二乙酯（DEP）污染原水的应急处理工艺进行了研究.结果表明,活性炭吸附可有效去除双酚A和DEP.拟二级动力学模型和Elovich模型较好地描述粉末活性炭对原水中BPA和DEP的吸附过程.中试条件下,50 mg/L的粉末活性炭可分别将原水中浓度约为500μg/L的双酚A和3.3 mg/L的DEP处理达标.炭砂滤柱对2种化学品的动态吸附表明,BPA和DEP的去除率受它们初始浓度的影响较小,在滤速为5.1-15.3 m/h的范围内BPA和DEP的去除率基本不受滤速的影响.当同时采用粉末活性炭和炭砂滤柱工艺时,PAC的吸附过程是去除污染的主要阶段,炭砂滤柱可以作为粉末活性炭的有效补充保证一定的安全系数.KMnO4和Cl2均不能氧化DEP,3 mg/L的KMnO4和1.5 mg/L的Cl2可几乎完全氧化水中浓度为850μg/L的BPA,BPA的氯化产物和KMnO4的氧化产物及其毒性有待于进一步研究.1.5 mg/L高锰酸钾和PAC联用对去除DEP无协同作用,对去除BPA有促进作用.Emergent treatment of source water polluted by representative chemical bisphenol-A（BPA） and Di-ethyl phthalate（DEP） was researched. The results indicate that activated carbon adsorption could achieve high efficiencies to remove the two chemicals. The pseudo second-order adsorption kinetic model and Elovich kinetic model can be used to describe the powdered activated carben（PAC） adsorption process of BPA and DEP in raw water. In pilot test, 50 mg/L PAC dosage can get the pollution concentration of 500 μg/L BPA or 3.3 mg/L DEP comply with the requirement of water quality standard. The dynamic adsorption of carbon-sand filter was also studied, and removal efficiencies of BPA and DEP were hardly influenced by their original concentrations and the filtering velocity among 5.1-15.3 m/h of carbonsand filter. When PAC adsorption was combined with carbon-sand filter, PAC adsorption contributes most to removing pollution, and carbonsand filter as the supplement of PAC can strengthen safety. DEP can＇t be oxidized by KMnO4 or Cl2, but 850 μg/L BPA can be almost completely oxidized by 3 mg/L KMnO4 and 1.5 mg/L Cl2. The oxidation products of BPA as well as their toxicity need further study. PAC adsorption combined with 1.5 mg/L KMnO4 preoxidation can＇t improve the removal efficiency of DEP, but can improve BPA removal efficiency.

关 键 词：水源水 突发污染 双酚A 邻苯二甲酸二乙酯 活性炭 预氧化 

分 类 号：X52[环境科学与工程—环境工程]