磁介质混凝沉淀技术的现状及探索  

Current Situation and Exploration of Magnetic Medium Coagulation and Sedimentation Technology

作　　者：吴震 陈飞勇 刘汝鹏 卢永峰 孙翠珍[1] 罗从伟[1] WU Zhen;CHEN Feiyong;LIU Rupeng;LU Yongfeng;SUN Cuizhen;LUO Congwei(School of Municipal and Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;Resources and Environment Innovation Institute,Shandong Jianzhu University,Jinan 250101,China;Rizhao Shujin Mining Co.,Ltd.,Rizhao 276800,China)

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]山东建筑大学资源与环境创新研究院,山东济南250101 [3]日照市沭锦矿业有限公司,山东日照276800

出　　处：《净水技术》2023年第2期23-38,共16页Water Purification Technology

基　　金：山东省引进顶尖人才“一事一议”项目:黄河流域(山东)水环境健康关键技术与高端装备研发。

摘　　要：磁介质混凝沉淀技术因具有混凝效果好、污染物去除率高、污泥产量低、流程短等优点备受国内外学者的关注。文章简要介绍了磁介质混凝沉淀技术的工艺流程、优缺点,通过MEDLVO理论在微观层面解释了该技术的原理,总结了磁介质混凝沉淀技术混凝剂种类及投加量、磁介质性质及投加量、药剂投加顺序、处理时间及搅拌强度、pH等工艺参数对混凝效果的影响及其优化。通过对比不同学者的研究结果发现,磁介质之间磁力的相互吸引作用也会促进絮体的聚集沉淀,磁介质混凝沉淀技术各工艺参数会因待处理水样的水质不同而异。同时,文章列举了磁介质混凝沉淀技术的工程应用实例,并展望了该技术可能的发展方向。Magnetic media coagulation and sedimentation technology has attracted the attention of domestic and foreign scholars due to its advantages of good coagulation effect, high pollutant removal rate, low sludge output, and short process. The article briefly introduces the technological process, advantages and disadvantages, explaining the principle of this technology at the microscopic level through MEDLVO theory, summarizing the types and dosage of magnetic medium coagulation and sedimentation technology, the properties and dosage of magnetic medium, and the order of chemical dosage. The influence and optimization of processing time, stirring intensity, pH and other process parameters on the coagulation effect. By comparing the research results of different scholars, it is found that the magnetic attraction between the magnetic medium also promotes the aggregation and sedimentation of flocs, and the process parameters of the magnetic medium coagulation and sedimentation technology varies according to the quality of the water samples to be treated. At the same time, the paper lists the engineering application examples of the magnetic medium coagulation and sedimentation technology and prospects the possible development direction of this technology.

关 键 词：污废水处理 磁介质混凝沉淀 MEDLVO理论 磁性混凝剂 磁介质改进 

分 类 号：X703[环境科学与工程—环境工程]