[Enhanced coagulation and NOM fractionation study of a typical southern water].
Systematic studies on enhancing normal treatment processes were performed in order to remove aquatic organic matter economically and efficiently. Enhanced coagulation and polymer coagulant-aid coagulation were compared through jar tests and on-spot experiment (Pilot-scale and full-scale experiment). Fractionations of raw water and water after treatments of above two strategies were performed based on selective adsorption of resin DAX-8. It was found that matters causing UV absorbance at 254 nm were well removed by above two treatments; removals of which could be achieved 90% or more. Hydrophobic bases and acids fractions were more removed under enhanced conditions with removals 66% and 35% respectively; while hydrophilic fraction could be better removed by about 45% using polymer coagulant aids. But the whole removals of the two strategies were almost equal.
Liu
Hai-long
HL
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Xia
Zhong-huan
ZH
Wang
Dong-sheng
DS
Tang
Hong-xiao
HX
Zhang
Jin-song
JS
D005591:Chemical Fractionation; D002681:China; D005427:Flocculation; D009930:Organic Chemicals / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D009930:Organic Chemicals; D014874:Water Pollutants, Chemical