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대한상하수도학회> 상하수도학회지> 광주지역 영산강의 NBOD 발생에 대한 암모니아성 질소 및 미생물 영향 연구

KCI등재

광주지역 영산강의 NBOD 발생에 대한 암모니아성 질소 및 미생물 영향 연구

Effect of ammonia nitrogen and microorganisms on the elevated nitrogenous biochemical oxygen demand (NBOD) levels in the Yeongsan river in Gwangju

장동 ( Dong Jang ) , 조광운 ( Gwangwoon Cho ) , 손경록 ( Gyeongrok Son ) , 김하람 ( Haram Kim ) , 강유미 ( Yumi Kang ) , 이승기 ( Seunggi Lee ) , 황순홍 ( Soonhong Hwang ) , 배석진 ( Seokjin Bae ) , 김연희 ( Yunhee Kim )
  • : 대한상하수도학회
  • : 상하수도학회지 36권2호
  • : 연속간행물
  • : 2022년 04월
  • : 81-95(15pages)
상하수도학회지

DOI


목차

1. 서 론
2. 연구방법
3. 결과 및 고찰
4. 결 론
사 사
References

키워드 보기


초록 보기

The present study was performed to investigate the effects of NH3-N and nitrifying microorganisms on the increased BOD of downstream of the Yeongsan river in Gwangju. Water samples were collected periodically from the 13 sampling sites of rivers from April to October 2021 to monitor water qualities. In addition, the trends of nitrogenous biochemical oxygen demand (NBOD) and microbial clusters were analyzed by adding different NH3-N concentrations to the water samples. The monitoring results showed that NH3-N concentration in the Yeongsan river was 22 times increased after the inflow of discharged water from the Gwangju 1st public sewage treatment plant (G-1-PSTP). Increased NH3-N elevated NBOD levels through the nitrification process in the river, consequently, it would attribute to the increase of BOD in the Yeongsan river. Meanwhile, there was no proportional relation between NBOD and NH3-N concentrations. However, there was a significant difference in NBOD occurrence by sampling sites. Specifically, when 5 mg/L NH3-N was added, NBOD of the river sample showed 2-4 times higher values after the inflow of discharged water from G-1-PSTP. Therefore, it could be thought other factors such as microorganisms influence the elevated NBOD levels. Through next-generation sequencing analysis, nitrifying microorganisms such as Nitrosomonas, Nitroga, and Nitrospira (Genus) were detected in rivers samples, especially, the proportion of them was the highest in river samples after the inflow of discharged water from G-1-PSTP. These results indicated the effects of nitrifying microorganisms and NH3-N concentrations as important limiting factors on the increased NBOD levels in the rivers. Taken together, comprehensive strategies are needed not only to reduce the NH3-N concentration of discharged water but also to control discharged nitrifying microorganisms to effectively reduce the NBOD levels in the downstream of the Yeongsan river where discharged water from G-1-PSTP flows.

UCI(KEPA)

간행물정보

  • : 공학분야  > 토목공학
  • : KCI등재
  • :
  • : 격월
  • : 1225-7672
  • : 2287-822X
  • : 학술지
  • : 연속간행물
  • : 1987-2022
  • : 2048


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발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 36권 2호 발행 연도 : 2022 페이지 : pp. 1-2 (2 pages)

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발행기관 : 대한상하수도학회 간행물 : 상하수도학회지 36권 2호 발행 연도 : 2022 페이지 : pp. 59-79 (21 pages)

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Conventional wastewater treatment plants (WWTPs) do not fully remove micropollutants. Enhanced treatment of sewage effluents is being considered or implemented in some countries to minimize the discharge of problematic micropollutants from WWTPs. Representative enhanced sewage treatment technologies for micropollutant removal were reviewed, including their current status of research and development. Advanced oxidation processes (AOPs) such as ozonation and UV/H2O2 and adsorption processes using powdered (PAC) and granular activated carbon (GAC) were mainly discussed with focusing on process principles for the micropollutant removal, effect of process operation and water matrix factors, and technical and economic feasibility. Pilot- and full-scale studies have shown that ozonation, PAC, and GAC can achieve significant elimination of various micropollutants at economically feasible costs(0.16-0.29 €/m3). Considering the current status of domestic WWTPs, ozonation and PAC were found to be the most feasible options for the enhanced sewage effluent treatment. Although ozonation and PAC are all mature technologies, a range of technical aspects should be considered for their successful application, such as energy consumption, CO2 emission, byproduct or waste generation, and ease of system construction/operation/maintenance. More feasibility studies considering domestic wastewater characteristics and WWTP conditions are required to apply ozonation or PAC/GAC adsorption process to enhance sewage effluent treatment in Korea.

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저자 : 장동 ( Dong Jang ) , 조광운 ( Gwangwoon Cho ) , 손경록 ( Gyeongrok Son ) , 김하람 ( Haram Kim ) , 강유미 ( Yumi Kang ) , 이승기 ( Seunggi Lee ) , 황순홍 ( Soonhong Hwang ) , 배석진 ( Seokjin Bae ) , 김연희 ( Yunhee Kim )

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초록보기

The present study was performed to investigate the effects of NH3-N and nitrifying microorganisms on the increased BOD of downstream of the Yeongsan river in Gwangju. Water samples were collected periodically from the 13 sampling sites of rivers from April to October 2021 to monitor water qualities. In addition, the trends of nitrogenous biochemical oxygen demand (NBOD) and microbial clusters were analyzed by adding different NH3-N concentrations to the water samples. The monitoring results showed that NH3-N concentration in the Yeongsan river was 22 times increased after the inflow of discharged water from the Gwangju 1st public sewage treatment plant (G-1-PSTP). Increased NH3-N elevated NBOD levels through the nitrification process in the river, consequently, it would attribute to the increase of BOD in the Yeongsan river. Meanwhile, there was no proportional relation between NBOD and NH3-N concentrations. However, there was a significant difference in NBOD occurrence by sampling sites. Specifically, when 5 mg/L NH3-N was added, NBOD of the river sample showed 2-4 times higher values after the inflow of discharged water from G-1-PSTP. Therefore, it could be thought other factors such as microorganisms influence the elevated NBOD levels. Through next-generation sequencing analysis, nitrifying microorganisms such as Nitrosomonas, Nitroga, and Nitrospira (Genus) were detected in rivers samples, especially, the proportion of them was the highest in river samples after the inflow of discharged water from G-1-PSTP. These results indicated the effects of nitrifying microorganisms and NH3-N concentrations as important limiting factors on the increased NBOD levels in the rivers. Taken together, comprehensive strategies are needed not only to reduce the NH3-N concentration of discharged water but also to control discharged nitrifying microorganisms to effectively reduce the NBOD levels in the downstream of the Yeongsan river where discharged water from G-1-PSTP flows.

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초록보기

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초록보기

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(기관인증 필요)

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다운로드

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초록보기

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