| 水源水中典型化学品突发污染的应急处理 |
| 摘要点击 1555 全文点击 1458 投稿时间：2008-07-17 修订日期：2008-09-16 |
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| 中文关键词 水源水 突发污染 双酚A 邻苯二甲酸二乙酯 活性炭 预氧化 |
| 英文关键词 source water emergent pollution bisphenol-A(BPA) Di-ethyl phthalate(DEP) activated carbon preoxidation |
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| 中文摘要 |
| 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500 μg/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850 μg/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. |
| 英文摘要 |
| 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 carbon(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 carbon-sand filter. When PAC adsorption was combined with carbon-sand filter, PAC adsorption contributes most to removing pollution, and carbon-sand 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. |
