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The Effect of Reject Water on the Water Quality of Effluent from S Sewage Treatment Plant

S 하수처리장 반류수가 방류수 수질에 미치는 영향

  • Received : 2009.10.27
  • Accepted : 2010.01.12
  • Published : 2010.03.31

Abstract

To acquire preliminary data for the control of total nitrogen (TN) in S sewage treatment plant, which processes merging food waste and sewage, the effect of reject water on the total nitrogen in the effluent was examined in this study. Water quality data for the plant during the winter period were applied to calculate the mass balance. It was calculated that at least more than 231 kg/d TN should be removed to control the TN concentration in the effluent. Assuming 18 ppm as the goal TN concentration in the effluent, about 941 kg/d TN should be removed from this plant. Approximately 10% more TN should be removed than at present to achieve this result. It was observed that dewatering the filtrate had a considerably greater effect on the total nitrogen in the effluent than the reject waters. The dewatered filtrate contained 1,399kg/d TN. The contribution of the dewatered filtrate to the TN concentration in the effluent was 0.183, which was 7 to 23 times greater than the other reject waters. In addition, the amount of total nitrogen from the reject water, with the exception of the dewatering filtrate, was lower than the amount of TN that should be removed from S sewage treatment plant. Therefore, it was concluded that one of the most effective methods for controlling the TN concentration in effluent was the removal of the TN contained in the dewatering filtrate.

Keywords

TN control;Reject water;Mass balance;Sewage treatment

References

  1. 부산환경공단, 2008, 반류수의 영향분석 및 실증처리 통한 방류수 수질개선, 2008년 부산광역시환경시설공단 산.학.연.관 공동연구 세미나 자료집(제5호), 89-106.
  2. 한진희, 권민, 한종훈, 윤주환, 남해욱, 고주형, 2007, 반류수처리를 위한 현장 pilot plant 생물막 아질산화 반응조에서 운전인자 평가, 한국물환경학회지 23(5), 636-641.
  3. 환경부, 2004, 수질오염공정시험방법, 환경부, 182-186.
  4. 박운지, 안종화, 이찬기, 2008, 폐타이어 담체를 이용한 파일럿 규모 유동상 생물막 공정에서 하수의 질소제거에 미치는 온도 영향, 대한환경공학회지, 30(5), 507-516.
  5. 임정훈, 오경아, 우혜진, 최은희, 이상일, 김창원, 2002, MBBR에서 부착 미생물의 거동과 공정성능에 대한 온도영향, 대환환경공학회지, 24(10), 1819-1827.
  6. 하준수, 최의소, 박재홍, 길경익, 김성원, 2003, 영양소제거 공정의 기질 정량관계에 대한 온도와 기질부하의 영향, 상하수도학회지, 17(6), 777-784.
  7. 정인철, 정병길, 성낙창, 2006, 수온 감소기와 증가기의 질소제거 특성 평가, 한국폐기물학회지, 23(5), 397-403.

Acknowledgement

Supported by : 부산환경공단