하수처리시설에서 총유기탄소(TOC) 처리를 위한 운영·관리 고찰 = A study on operation and management for TOC removal of public sewage treatment works

다국어 초록 (Multilingual Abstract)

Total organic carbon (TOC) will replace chemical oxygen demand (CODMn) as an effluent water quality standard in public sewage treatment works (PSTWs) from 2021 in Korea. To ensure effective control of TOC in the effluent, investigation was carried out into TOC levels and sewage treatment operation factors in five target PSTWs using anaerobic-anoxic-aerobic (A2O) processes, media, membrane, and sequencing batch reactor (SBR) technologies. TOC removal efficiencies appeared to be 93-96% on average. As a fraction of TOC, biodegradable dissolved organic carbon (BDOC) was reduced from 64% in the influent to 9% in the effluent in these PSTWs. During the investigation, biological treatment processes were applied flexibly for operation factors such as HRT, SRT, MLSS, F/M ratios and BOD volume loads, based on the influent characteristics and design conditions. As a result, we suggest efficient operating conditions in PSTWs by evaluating relationships between TOC removal and operation factors.

참고문헌 (Reference)

1 손희종, "회분식 생물반응기를 이용한 BDOCrapid와 BDOCslow 결정" 한국물환경학회 20 (20): 357-364, 2004

2 차우석, "하수처리장 방류수의 BDOC 분율 특성 분석" 대한환경공학회 25 (25): 16-257, 2003

3 조영범, "하수처리시설 총 유기탄소 분포 및 유기물질간 상관관계 분석" 한국환경분석학회 17 (17): 207-214, 2014

4 정동환, "우리나라 공공하수처리시설의 TOC 배출특성 및 관리방안 연구" 대한상하수도학회 28 (28): 657-668, 2014

5 손희종, "오존처리에 의한 BDOCrapid와 BDOCslow 생성 특성" 대한환경공학회 28 (28): 2006

6 윤조희, "낮은 C/N비 하수의 외부 탄소원 주입에 따른 생물학적 질소제거에서 미생물 군집 구조특성" 대한환경공학회 30 (30): 831-838, 2008

7 Katsoyiannis, A, "The fate of the fate of dissolved organic carbon(DOC) in the wastewater treatment process and its importance in the removal of wastewater contaminants" 14 (14): 284-292, 2007

8 Servais, P., "Simple method for determination of biodegradable dissolved organic carbon in water" 55 (55): 2732-2734, 1989

9 Ministry of Environment, "Public analytical methods for water pollution" 2015

10 Target public sewage treatment works, "Operation factors in PSTWs" 2015

11 Korea Environment Cooperation, "Introduction of advanced sewage treatment technologies" 2013

12 Weinrich, L. A., "Implications of organic carbon in the deterioration of water quality in reclaimed water distribution systems" 44 : 5367-5375, 2010

13 Ministry of Environment, "Explanatory document for 'Draft introduction plan of TOC standard for public sewage treatment works'" 2018

14 National Institute of Environmental Research, "Evaluation of attainment ratio on water quality goal of river and reservoir from 2011 to 2015 in Korea" 2017

15 National Institute of Environmental Research, "Environmental impact analysis according to determinating environmental criteria for TOC" 2011

16 Lee, J. H., "Effects of nitrogen removal with C/N ratio and internal recycle rate in high-strength wastewater using ICBR" 21 (21): 1529-1536, 1999

17 Servais, P., "Determination of the biodegradable fraction of dissolved organic matter in waters" 21 (21): 445-450, 1987

18 National Institute of Environmental Research, "A study on master plan for introduction of TOC regulatory standard" 2012

19 National Institute of Environmental Research, "A study on investigation of domestic TOC source unit for application of total water pollution load management system" 2014

20 National Institute of Environmental Research, "A study on determinating TOC standard for application of sewage treatment plant effluent (Ⅱ)" 2015

21 National Institute of Environmental Research, "A study on determinating TOC standard for application of comprehensive environmental management system" 2015

22 McDowella, W. H., "A comparison of methods to determine the biodegradable dissolved organic carbon from different terrestrial sources" 38 : 1933-1942, 2006