Browse > Article

Characteristics of Natural Organic Matter (NOM) on Han River and Criterion of Enhanced Coagulation  

Jeong, Youngmi (한국과학기술연구원 환경기술연구단)
Kweon, Jihyang (건국대학교 공과대학 환경공학과)
Lee, Sanghyup (한국과학기술연구원 환경기술연구단)
Publication Information
Journal of Korean Society of Water and Wastewater / v.21, no.6, 2007 , pp. 653-661 More about this Journal
Abstract
The Disinfectants/Disinfection By-products (D/DBP) Rule proposed by the US Environmental Protection Agency requires the implementation of enhanced coagulation as a control strategy for natural organic matter (NOM) removal and as a means of limiting the formation of all DBPs, i.e., not just the trihalomethanes and haloacetica acids. To control DBP formation, several best available technologies (BATs) were determined for removal of DBPs and DBP precursors. The enhanced coagulation is one of the BATs for DBP precursors removal. Treatment facilities that achieve a specified percent removal of total organic carbon (TOC) prior to the application of a continuous disinfectant or that achieve a residual TOC concentration < 2mg/L prior to the application of a continuous disinfectant are considered to be in compliance with enhanced coagulation. The enhanced coagulation was applied to raw water in Korea, the Han River. Raw water were examined and effects of different raw water qualities on enhanced coagulation were investigated. Three analyses were used for raw water characteristics, water quality measurement, molecular weight distributions, hydrophobic/hydrophilic fractionation. The Han River had the relatively low alkalinity and low organic carbon concentration. The results of molecular weight distributions showed significant portions of low molecular weight organics, which is very different from most water in USA. The alum doses for the required TOC removal guided from USEPA manual were quite low (i.e. 10~30 mg/L alum) for the water, probably due to the specific water quality of the Han River.
Keywords
Natural organic matter (NOM); Enhanced coagulation; Total Organic carbon (TOC); Point of diminishing return (PODR);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 김정현 (1999) Enhanced Coagulation의 적용성 평가 연구. 한국수처리학회지. 7(4). pp. 31-41
2 Kimberlyk, A.B. and Mortza, A., Gary, A. (1996) Enhanced and Optimized Coagulation for removal of Particulate and Microbial Contaminants, In Proceedings of the 1996 AWWAAnnual Conference, New York, pp. 303-310
3 Marc Edwards (1997) Predicting DOC Removal During Enhanced Coagulation, J. AWWA, 89(5), pp. 78-89
4 Mark Morgan, John Mogavero, Gail Charles (1995) Optimization of Particulate Removal under Enhanced Coagulation Conditions, In Proceedings of the 1995 A WW A Annual Conference, New Orleans
5 US Environmental Protection Agency (1998) National primary drinking water regulations: disinfectants and disinfection by-products. Fed Regist 63(241): 69389
6 Thurman, E.M., Tonald L. Malcolm (1981) Preparative Isolation of Aquatic Humic Substances, Environ. Sci. & Tech., 15(4), pp. 463-466   DOI   ScienceOn
7 Edzwald J. K., John E. Tobiason (1999) Enhanced Coagulation: US requirements and a Broader View, Wat. Sci. Tech., 40(9), pp. 63-70
8 Singer, P.C. (1995) Enhanced Coagulation and Enhanced Softening gar the Removal of Disinfection By-product Precursors: An Evaluation Report to the Disinfectants/ Disinfection By-products Technical Advisory Workgroup of the Water Utility Council of the AWWA
9 Edzwald, J.K. (1993) Coagulation in Drinking Water T reatrnent: Particles, Organic and Coagulation, Water Science Tech., 27(11), pp. 21-35   DOI
10 Edzwald, J.K and Bencshoton, J.E. Van. (1990) Aluminiwn Coagulation of Natural Organic Matter, Proc. of 4th Gothenburg Sym.
11 Mark C. White, Jeffrey D. Thompson, Gregory W. Harrington, Philip C. Singer (1997) Evaluating criteria for enhanced coagulation compliance, J. AWWA, 89(5), pp. 6477
12 박현, 김창모, 장현성, 김현숙, 박창민, 한성희 ,유명진, (2006) 한강본류와 유입지천의 천연유기물과 염소소독부산물 생성능 고찰, 2006년 대한환경공학회 학술발표회
13 US Environmental Protection Agency (1999) Definitions of Enhanced Coagulation and Enhanced Precipitative Softening, Prepared for Health and Ecological Criteria Div., Washington, D.C.
14 Seung-Hyun Kim (2005) Enhanced Coagulation: Determination of Controlling Criteria and An effect on Turbidity Removal, Environ. Eng. Res., 10(3), pp. 105-111   DOI