%0 Journal Article
%T Preparation and characterization of organic polymer modified composite polyaluminum chloride
%A SHI Bao-you
%A TANG Hong-xiao
%A <br>SHI Bao-you
%A TANG Hong-xiao
%J 环境科学学报(英文版)
%D 2006
%I 
%X Compared with traditional aluminum salts, polyaluminum chloride(PACl) has better coagulation-flocculation performance in turbidity removal. However, i t is still inferior to organic polymers in terms of bridging function. In order to improve the aggregating property of PACl, different composite PACl flocculant s were prepared with various organic polymers. The effect of organic polymer on the distribution of Al(III) species in composite flocculants was studied using 2 7Al NMR and Al-ferron complexation methods. The charge neutralization and surfac e adsorption characteristics of composite flocculants were also investigated. Ja r tests were conducted to evaluate the turbidity removal efficacy of organic pol ymer modified composite flocculants. The study shows that cationic polymer and a nionic polymer have significant influences on the coagulation-flocculation behav iors of PACl. Both cationic and anionic polymers can improve the turbidity remov al performance of PACl but the mechanisms are much different: cationic organic p olymer mainly increases the charge neutralization ability, but anionic polymer m ainly enhances the bridging function.
%K polyaluminum chloride(PACl)
%K organic polymer
%K composite flocculant<br>氯化物
%K 有机聚合物
%K 凝聚剂
%K 复合物
%K 废水处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=817574F112FFD15007753946D6D351DE&yid=37904DC365DD7266&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=797D49279EA93BC4&eid=1D67BE204FBF4800&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=11