%0 Journal Article
%T The removal of dissolved organic matter in different water by coagulation<br>不同水体溶解性有机物的混凝去除特性
%A YANG Haihong
%A WEI Qunshan
%A WANG Dongsheng
%A LIANG Yuan
%A LI Zhonghe
%A ZHANG Litian
%A <br>杨海红
%A 魏群山
%A 王东升
%A 梁远
%A 李中和
%A 张利田
%J 环境科学学报
%D 2007
%I 
%X The removal of DOM,which are from natural waters of Guangzhou Zhujiang River,Beijing Miyun Reservoir and Tianjin Luan River,by coagulation was investigated using aluminium sulfate,industrial ferric chloride and industrial polyaluminum chloride(PAC),respectively.The relationship between water quality and the process of coagulation was investigated as well.The removal of DOM from Zhujiang water by Ferric chloride with higher dosage is the best because of the lower alkalinity of the water and the rapid decrease of pH.The difference of coagulation process between polyaluminum chloride(PAC) and salt coagulant with lower dosage was less notable in south water than in north water.It showed that there must be some differences between the characteristics of south and north water.The part of removed DOM in north water would have more charged groups and be easier to be neutralized than in south water.Polyaluminum chloride(PAC) showed the best efficiency in the removal of DOM for all waters if compared by the efficiency at the convergent point of coagulation process.It indicated that charge neutralized-hydrophobilization or adsorption-precipitation may be the primary mechanism.The average DOC removal of Zhujiang River was higher than Miyun water and they were both higher than Luan River remarkably.The further fractionation of DOM indicated that the higher content of HoN was in the water,the higher DOC removal.The kind of relationship between the characteristics of DOM and the DOC removal showed that the fraction distribution of DOM was also an important factor influencing DOC removal in addition to alkalinity and TOC.
%K natural water
%K dissolved organic matter
%K coagulation
%K UV
%K TOC<br>天然水体
%K 溶解性有机物
%K 混凝
%K UV
%K TOC
%K 水体
%K 溶解性有机物
%K 混凝
%K 去除特性
%K coagulation
%K water
%K different
%K dissolved
%K organic
%K matter
%K 因素
%K 影响
%K 化学分级
%K 总有机碳
%K 有机物含量
%K 性物质
%K 憎水
%K 研究
%K 平均去除率
%K 去除机理
%K 吸附
%K 沉淀
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=89F0B457264B91E9C8F32E5A96E3E7DA&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=59906B3B2830C2C5&sid=3B99442D3C631650&eid=7373B0D450113B06&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=14