%0 Journal Article
%T Mechanism of Natural Organic Matter Removal by Potassium Permanganate Composite Enhanced Coagulation<br>高锰酸盐复合剂强化混凝对水中天然有机物的去除机制研究
%A ZHANG Yong-ji~
%A ZHOU Ling-ling~
%A LI Wei-ying~
%A LI Xing~
%A LI De-qiang~
%A LI Gui-bai~
%A <br>张永吉
%A 周玲玲
%A 李伟英
%A 李星
%A 李德强
%A 李圭白
%J 环境科学
%D 2009
%I 
%X Streaming current technique, fluctuation of transmitted light technique, molecular weight distribution and XAD resin adsorption technique were used to study the mechanism of natural organic matter removal by potassium permanganate composite(PPC) enhanced coagulation. Results showed that natural organic matter removal efficiency increased 13% by 0.75 mg/L potassium permanganate composite enhanced coagulation compared with that of alum coagulation alone. Streaming current indicated that potassium permanganate composite decreased the organic matter stability by reducing the surface negative charge, and the SC value increased from 55.2 to 61.4, 69.6 and 87.0 by addition of 0.50, 0.75 and 1.0 mg/L PPC. Coagulation index R indicated both nascent manganese dioxide and subsidiaries played an important role in potassium permanganate composite enhanced coagulation process. Potassium permanganate composite enhanced coagulation increased the removal efficiency of lower molecular weight and hydrophilic organic matter compared with alum coagulation, and hydrophilic organic matter can be reduced from 1.9 mg/L to 1.32 mg/L by the addition of 0.75 mg/L potassium permanganate composite.
%K potassium permanganate composite
%K natural organic matter
%K streaming current
%K coagulation index
%K molecular weight distribution<br>高锰酸盐复合剂
%K 天然有机物
%K 流动电流
%K 絮凝指数
%K 分子质量分布
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=6E91755A7F3426241A0A252A7F2B9A6E&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=38B194292C032A66&sid=A67EE05E56DA7F45&eid=231F9A307C169827&journal_id=0250-3301&journal_name=环境科学&referenced_num=5&reference_num=14