摘要
系统总结磁混凝加载作用机理、磁种理化性质以及水处理工程应用现状,针对工程应用中出现溶解性有机物去除难、磁种吸附性低、药剂运行成本的问题,研究强化磁混凝技术,技术包括:磁种改性(磁性絮凝剂、磁性吸附剂)、磁混凝耦合技术,分析不同强化磁混凝技术优劣势和技术应用中存在的难点,总结出纳米磁性材料(粒径50~200 nm)、耦合技术是强化技术的发展方向,未来研发应着重进行特异性磁种机理研究,制备廉价、高稳定性、吸附性的纳米磁性材料,耦合技术推广应用以及超导磁分离设备的研发。
This paper systematically summarizes the mechanism of magnetic coagulation loading,the physical and chemical properties of magnetic seeds,the current situation in water treatment.In view of the problems of difficult removal of dissolved organic matter,low adsorption of magnetic seeds and the running cost of reagents in engineering application,the research of enhanced magnetic coagulation technology is carried out,including:the modification of magnetic seeds(magnetic flocculant,magnetic adsorbent),types of coagulants and optimization of dosing methods,coupling technology of magnetic coagulation.Based on the analysis of the advantages and disadvantages of different enhanced magnetic coagulation technology and the difficulties in its application,It is concluded that nano magnetic material(particle size 50~200 nm),composite coagulant(inorganic-organic-adsorption)and coupling technology are the development direction of strengthening technology.In the future,the research and development should focus on the study of specific magnetic species mechanisms,the preparation of inexpensive,highly stable,and adsorbent nanomagnetic materials and composite coagulants,the application of coupling technology and the development of superconducting magnetic separation equipment.
作者
孙志涛
李军
王秀杰
张阳
吴耀东
裴晗博
SUN Zhitao;LI Jun;WANG Xiujie;ZHANG Yang;WU Yaodong;PEI Hanbo(The College of Architecture and Civil Engineering,The Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology,100124;Beijing Municipal Engineering Design and Research Institute Co.,Ltd,100082,Beijing,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2023年第7期7-12,共6页
Technology of Water Treatment
基金
京津冀水环境治理与管理关键技术综合集成研究(2018ZX07111006)。
关键词
磁混凝
强化磁混凝
磁种改性
耦合技术
magnetic coagulation
enhanced magnetic coagulation
magnetic seed modification
coupling technology
