%0 Journal Article
%T Effect of floc characteristics on nanofiltration membrane fouling<br>絮体性质对纳滤膜污染的影响
%A Yu Yang
%A Zhao Changwei
%A Wang Yangui
%A Fan Weihong
%A Luan Zhaokun
%A <br>于洋
%A 赵长伟
%A 王艳贵
%A 范卫红
%A 栾兆坤
%J 环境工程学报
%D 2013
%I 
%X Flocs formed by coagulation process will also affect the performance of membrane filtration. Floc characteristics of coagulants-conventional Al salt (AlCl3) and polyaluminum chloride (PAC) under different dosages were investigated by using a laser diffraction instrument. The results showed that membrane flux decline was deteriorated less than 0.20 mmol/L dosages. With the dosages increasing, membrane flux decline decreased significantly. The flux decline (J/J0) with only humic acid (HA) was 0.65. Adding 0.50 mmol/L AlCl3 and PAC coagulants, the flux declined 0.78 and 0.75, respectively. Cake resistance was more obviously affected by floc size. The bigger floc size is, the better permeability of cake is. The mechanism of nanofiltration membrane fouling was mainly pore blocking by fouling model analysis.
%K coagulation
%K floc characteristic
%K nanofiltration
%K membrane fouling<br>混凝
%K 絮体性质
%K 纳滤
%K 膜污染
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=4D6BB6A422263A45A94AB78E2969A887&yid=FF7AA908D58E97FA&vid=DF92D298D3FF1E6E&iid=0B39A22176CE99FB&sid=CB3428B1EFB1C133&eid=4BEA9A781F286FC6&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=19