Evaluating the effects of granular and membrane filtrations on chlorine demand in drinking water
In this study,chlorine decay experiments were conducted for the raw water that is treated by Chilseo Water Treatment Plant(CWTP)as well as the effluents from sand and granular activated carbon (GAC)fllters of CWTP and fitted using a chlorine decay model.The model estimated the fast and slow reacting nitrogenous as well as organic/inorganic compounds that were present in the water.It Was found that the chlorine demand due to fast and slow reacting organic/inorganic substances(FRA and SRA) Was not reduced significantly by sand as well as GAC fdters.However.the treated effluents from those filters contained FRA and SRA that are less reactive and had small reaction rate constants.For the effluents from microfiltration,ultrafiltration and nanofiltration the chlorine demand due to FRA and SRA were further reduced but the reaction rate constants were larger compared to those of sand and GAC filter effluents.This has implications in the formation of disinfection by products(DBPs).If DBPs are assumed to form due to the interactions between chlorine and SRA.then it is possible that the DBP formation potential in the effluents from membrane filtrations could be higher than that in the effluents from granular media filters.
Chlorine decay model initial concentration nitrogenous compounds organic and inorganic compounds reaction rate constants
Veeriah JEGATHEESAN Seung-Hyun KLM C.K.JOO Baoyu GAO
School of Engineering,James Cook University,Townsville,QLD 4811,Australia Department of Civil Engineering,Masall UniversitY,631-701,Masan Korea Chilseo Water Treatment Plant,Masan.Korea School of Environmental Science and Engineering,Shandong University,Jinan,China
国际会议
西安
英文
207-215
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）