强化混凝-深床过滤优化集成去除水中的POPs及其构效关系

项目名称： 强化混凝-深床过滤优化集成去除水中的POPs及其构效关系

项目编号： No.21277065

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 环境科学、安全科学

项目作者： 常青

作者单位： 兰州交通大学

项目金额： 78万元

中文摘要： 持久性有机污染物(POPs)对人体有致癌、致突变及致畸的危害，近年来在一些水源中已发现POPs的存在，严重威胁着人民群众的饮水安全，为此提出针对POPs的强化混凝-深床过滤优化集成，以便在不改变自来水生产流程的情况下消除水中的POPs。 研究内容有：（1）混凝剂种类及投加量、助凝剂种类及投加量、原水浊度及pH值、搅拌强度及时间、絮体分形维数等对强化混凝去除各种POPs的影响及优化参数；（2）滤料种类和粒径、滤床深度和滤速、直接过滤、滤料表面积泥和反冲洗方法等对深床过滤去除各种POPs的影响及优化参数；（3）在强化混凝和深床过滤优化基础上二者的集成，及其对POPs去除的增强和互补作用；（4）不同种类POPs在浊度物质、絮体和滤料表面上的作用机制，定量构效关系模型，POPs的去除率预测。 目标是建立针对POPs的强化混凝-深床过滤优化集成的理论及技术体系， 保障饮水安全，有效应对污染突发事件。

中文关键词： 强化混凝；深床过滤；持久性有机污染物；优化；集成

英文摘要： Persistent Organic Pollutants ( POPs）are harmful for humen body because they might cause cancer, mutation and abnormality. Recently,the existence of POPs in water source was found widely, which seriously threaten the drinking water safety of people.Therefore the integration of optimized enhanced coagulation and optimized deep bed filtration was proposed for POPs removal under the condition that the original production process of tap water is not changed. The research contents are expected as follows: （1）the effects of coagulant type and dosage, assistant coagulant type and dosage, turbidity and pH value of raw water,strengh and time of stirring,fractal demension of flocs, etc on the removal of various POPs by enhanced coagulation and their optimum parameters.(2)the effect of filter medium type and diameter, the depth of filtration bed and filtering velocity, direct filtration, the sludge in the surface of filter medium and the method of back wash, etc on the removal of various POPs by deep bed filtration and their optimum parameters.(3)The integration of enhanced coagulation and deep bed filtration based on the optimization of them for the increasing effec and the complementary effect in removal of POPs.(4)the mechanisms of the reaction of POPs with the surfaces of turbidity substances, flocs and filter medi

英文关键词： enhanced coagulation；deep bed filtration；POPs；optimization；integration