%0 Journal Article
%T Particle Entrapment Mechanism in Deep Bed Filtration<br>深床过滤颗粒截留机理研究
%A Guo Jinlong
%A Meng Jun
%A Li Guiping
%A Luan Zhaokun
%A Tang Hongxiao
%A <br>郭瑾珑
%A 孟军
%A 李桂平
%A 栾兆坤
%A 汤鸿霄
%J 环境科学
%D 2003
%I 
%X Theoretical analysis was carried out in this paper to study the interaction in the bed filtration process, and the physico-chemical forces between the filter media and suspended particles in water were presented. Pilot study of the micro-flocculation deep bed filtration was carried out in the No. 9 Potable Water Treatment Plant of Beijing, the interception of particles of 1-10 microns diameter in the 500 cm deep filter bed was analyzed, and the head loss variation during 65 h was monitored. The shear force of 1-10 microns diameter-particle under 24 m/h filtration velocity was calculated. The theoretical physico-chemical forces between the filter bed and suspended particle of 1-10 microns diameter under the condition of -25 mV and -125 mV surface potential was also presented. The theoretical results are reasonably consistent with the experimental data, from which it can be concluded that the operation principles of micro-flocculation deep bed filtration could be analyzed by the physico-chemical interaction between the particles and filter media.
%K micro flocculation
%K deep bed filtration
%K physicochemical interaction
%K suspended partical interception<br>微絮凝
%K 深床过滤
%K 物理化学作用
%K 颗粒截留
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=15D99CAAA1482AF8&yid=D43C4A19B2EE3C0A&vid=B91E8C6D6FE990DB&iid=38B194292C032A66&sid=1371F55DA51B6E64&eid=1AE5323881A5ECDC&journal_id=0250-3301&journal_name=环境科学&referenced_num=4&reference_num=19