연속회분식 반응기에서 암모니아 센서를 이용한 맞춤형 유출수 총질소 농도 달성에 관한 연구 Study on Achieving Customized effluent total nitrogen concentration using ammonia sensor in sequencing batch reactor원문보기
본 연구는 SBR 공법을 이용하여 현장 조건 하에서 방류수 수질기준을 안정적으로 준수할 수 있는 맞춤형 유입수 분배 주입 전략을 개발하고자 하였다. 이 과정에서 유입수 분배 주입 전략에 의해 질소 제거효율이 향상되는 메커니즘을 규명하고, 실시간 운영 기법을 적용하여 SBR 반응조에서 암모니아성 질소 농도 기반으로 유입 유량을 자동 제어 프로그램을 통하여 유입수 농도 변동과 관계없이 배출되는 총질소(T-N) 농도를 일정하게 유지하기 위한 운전 전략을 개발하였다. 이와 함께 인(T-P)과 유기물(BOD, ...
본 연구는 SBR 공법을 이용하여 현장 조건 하에서 방류수 수질기준을 안정적으로 준수할 수 있는 맞춤형 유입수 분배 주입 전략을 개발하고자 하였다. 이 과정에서 유입수 분배 주입 전략에 의해 질소 제거효율이 향상되는 메커니즘을 규명하고, 실시간 운영 기법을 적용하여 SBR 반응조에서 암모니아성 질소 농도 기반으로 유입 유량을 자동 제어 프로그램을 통하여 유입수 농도 변동과 관계없이 배출되는 총질소(T-N) 농도를 일정하게 유지하기 위한 운전 전략을 개발하였다. 이와 함께 인(T-P)과 유기물(BOD, COD) 및 부유 고형물(SS)의 제거효율에 대한 유입수 분배 전략의 영향을 추가적으로 조사하였다.
1. 유입수 분배 주입 횟수를 1회에서 4회로 증가시킴에 따라 T-N 제거효율은 62.3±10.3%에서 89.4±6.3%까지 증가하는 것으로 나타났으며, 유출수 T-N 농도는 7.7±1.8 mg/L에서 4.1±0.8 mg/L로 감소하는 것으로 나타났다.
2. T-P, CODMn, BOD5, SS의 경우 유입수 주입 횟수에 관계없이 비교적 일정한 제거율을 나타내었으며, 달성한 평균 제거율은 각각 88.6, 83.7, 95.6, 95.1%를 나타내었다.
3. 유출수 T-N 농도를 유입수 질소 부하 변동에 관계없이 일정하게 유지하기 위하여 반응조내 암모니아성 질소 농도를 기반으로 한 유입수 분배 주입 전략을 개발하였다. 암모니아 센서를 이용하여 반응조내 암모니아성 질소 농도를 5 mg/L이하로 제한하였을 경우 유출수 T-N 농도는 평균 4.5(4.0~4.9) mg/L로 조사되었고, 반응조내 암모니아성 질소 농도를 10 mg/L이하로 제한하였을 경우에는 평균 9.0(6.7~9.9) mg/L로 조사되어 항상 목표 설정된 유출수 T-N 농도 이하로 처리되었다.
4. 반응조내 암모니아성 질소 농도를 기반한 유입수 분배 주입에 따른 T-P, CODMn, BOD5, SS의 평균 제거율은 각각 95.5, 87.6, 96.5, 96.0%로 나타났다.
5. 본 연구결과를 기초로 현장적용을 위한 60㎥/d 규모의 하수처리장에 대한 물질수지를 작성하였다. 이때 총질소의 목표 방류수질을 5, 10 mg/L로 설정한 경우 개발된 SBR공정의 총질소 삭감부하량은 각각 2.11, 1.81 kg/d로 산정되었다.
본 연구는 SBR 공법을 이용하여 현장 조건 하에서 방류수 수질기준을 안정적으로 준수할 수 있는 맞춤형 유입수 분배 주입 전략을 개발하고자 하였다. 이 과정에서 유입수 분배 주입 전략에 의해 질소 제거효율이 향상되는 메커니즘을 규명하고, 실시간 운영 기법을 적용하여 SBR 반응조에서 암모니아성 질소 농도 기반으로 유입 유량을 자동 제어 프로그램을 통하여 유입수 농도 변동과 관계없이 배출되는 총질소(T-N) 농도를 일정하게 유지하기 위한 운전 전략을 개발하였다. 이와 함께 인(T-P)과 유기물(BOD, COD) 및 부유 고형물(SS)의 제거효율에 대한 유입수 분배 전략의 영향을 추가적으로 조사하였다.
1. 유입수 분배 주입 횟수를 1회에서 4회로 증가시킴에 따라 T-N 제거효율은 62.3±10.3%에서 89.4±6.3%까지 증가하는 것으로 나타났으며, 유출수 T-N 농도는 7.7±1.8 mg/L에서 4.1±0.8 mg/L로 감소하는 것으로 나타났다.
2. T-P, CODMn, BOD5, SS의 경우 유입수 주입 횟수에 관계없이 비교적 일정한 제거율을 나타내었으며, 달성한 평균 제거율은 각각 88.6, 83.7, 95.6, 95.1%를 나타내었다.
3. 유출수 T-N 농도를 유입수 질소 부하 변동에 관계없이 일정하게 유지하기 위하여 반응조내 암모니아성 질소 농도를 기반으로 한 유입수 분배 주입 전략을 개발하였다. 암모니아 센서를 이용하여 반응조내 암모니아성 질소 농도를 5 mg/L이하로 제한하였을 경우 유출수 T-N 농도는 평균 4.5(4.0~4.9) mg/L로 조사되었고, 반응조내 암모니아성 질소 농도를 10 mg/L이하로 제한하였을 경우에는 평균 9.0(6.7~9.9) mg/L로 조사되어 항상 목표 설정된 유출수 T-N 농도 이하로 처리되었다.
4. 반응조내 암모니아성 질소 농도를 기반한 유입수 분배 주입에 따른 T-P, CODMn, BOD5, SS의 평균 제거율은 각각 95.5, 87.6, 96.5, 96.0%로 나타났다.
5. 본 연구결과를 기초로 현장적용을 위한 60㎥/d 규모의 하수처리장에 대한 물질수지를 작성하였다. 이때 총질소의 목표 방류수질을 5, 10 mg/L로 설정한 경우 개발된 SBR공정의 총질소 삭감부하량은 각각 2.11, 1.81 kg/d로 산정되었다.
The purpose of this study was to develop a customized influent distribution injection strategy that can stably adhere to the water quality standards under in-situ conditions using the SBR process. In this study, the mechanism to improve the nitrogen removal efficiency by the influent distribution in...
The purpose of this study was to develop a customized influent distribution injection strategy that can stably adhere to the water quality standards under in-situ conditions using the SBR process. In this study, the mechanism to improve the nitrogen removal efficiency by the influent distribution injection strategy was identified and the strategy was developed to maintain the total nitrogen (T-N) concentration constant regardless of influent nitrogen load variation by applying real-time operation technique. The effect of influent distribution injection strategy on removal efficiency of phosphorus (T-P), organic matter (BOD, COD) and suspended solid (SS) was further investigated.
1. As the number of influent distribution injection increases, the total nitrogen removal efficiency increased. The nitrogen removal efficiency was 62.6% under conventional SBR operating conditions, with 40% of the volumetric exchange ratio (VER). As the number of sub-cycles increased from 1 to 4, the nitrogen removal efficiency gradually increased to 92.4%.
2. In the case of T-P, CODMn, BOD5, and SS, the removal efficiencies were relatively constant regardless of the number of influent distribution injection, and the average removal efficiencies achieved were 88.6, 83.7, 95.6, and 95.1%, respectively.
3. In order to keep the effluent total nitrogen concentration constant regardless of influent nitrogen load variation, the influent distribution injection strategy based on the ammonia nitrogen concentration in the reactor has been developed. When the ammonia nitrogen concentration in the reactor was set to 5 mg/L or less, the total nitrogen concentration in the effluent was 4.5 (4.0 ~ 4.9) mg/L. When the ammonia nitrogen concentration in the reactor was set to 10 mg/L or less, the effluent total nitrogen concentration was 9.0 (6.7 ~ 9.9) mg/L. It was always below the target effluent total nitrogen concentration in the reactor.
4. The removal efficiencies of total phosphorus, CODMn, BOD5 and SS were 95.5, 87.6, 96.5 and 96.0%, respectively, when influent water was distributed and injected by using an ammonia nitrogen sensor in the reactor.
5. Based on the results of this study, material balance for the sewage treatment plant of 60 ㎥/d scale was prepared for the field application. At this time, when the target effluent water quality of total nitrogen was set to 5 and 10 mg/L, the total nitrogen reduction load of the developed SBR process was estimated to be 2.11 and 1.81 kg/d, respectively.The purpose of this study was to develop a customized influent distribution injection strategy that can stably adhere to the water quality standards under in-situ conditions using the SBR process. In this study, the mechanism to improve the nitrogen removal efficiency by the influent distribution injection strategy was identified and the strategy was developed to maintain the total nitrogen (T-N) concentration constant regardless of influent nitrogen load variation by applying real-time operation technique. The effect of influent distribution injection strategy on removal efficiency of phosphorus (T-P), organic matter (BOD, COD) and suspended solid (SS) was further investigated.
1. As the number of influent distribution injection increases, the total nitrogen removal efficiency increased. The nitrogen removal efficiency was 62.6% under conventional SBR operating conditions, with 40% of the volumetric exchange ratio (VER). As the number of sub-cycles increased from 1 to 4, the nitrogen removal efficiency gradually increased to 92.4%. 2. In the case of T-P, CODMn, BOD5, and SS, the removal efficiencies were relatively constant regardless of the number of influent distribution injection, and the average removal efficiencies achieved were 88.6, 83.7, 95.6, and 95.1%, respectively.
3. In order to keep the effluent total nitrogen concentration constant regardless of influent nitrogen load variation, the influent distribution injection strategy based on the ammonia nitrogen concentration in the reactor has been developed. When the ammonia nitrogen concentration in the reactor was set to 5 mg/L or less, the total nitrogen concentration in the effluent was 4.5 (4.0 ~ 4.9) mg/L. When the ammonia nitrogen concentration in the reactor was set to 10 mg/L or less, the effluent total nitrogen concentration was 9.0 (6.7 ~ 9.9) mg/L. It was always below the target effluent total nitrogen concentration in the reactor.
4. The removal efficiencies of total phosphorus, CODMn, BOD5 and SS were 95.5, 87.6, 96.5 and 96.0%, respectively, when influent water was distributed and injected by using an ammonia nitrogen sensor in the reactor.
5. Based on the results of this study, material balance for the sewage treatment plant of 60 ㎥/d scale was prepared for the field application. At this time, when the target effluent water quality of total nitrogen was set to 5 and 10 mg/L, the total nitrogen reduction load of the developed SBR process was estimated to be 2.11 and 1.81 kg/d, respectively.
The purpose of this study was to develop a customized influent distribution injection strategy that can stably adhere to the water quality standards under in-situ conditions using the SBR process. In this study, the mechanism to improve the nitrogen removal efficiency by the influent distribution injection strategy was identified and the strategy was developed to maintain the total nitrogen (T-N) concentration constant regardless of influent nitrogen load variation by applying real-time operation technique. The effect of influent distribution injection strategy on removal efficiency of phosphorus (T-P), organic matter (BOD, COD) and suspended solid (SS) was further investigated.
1. As the number of influent distribution injection increases, the total nitrogen removal efficiency increased. The nitrogen removal efficiency was 62.6% under conventional SBR operating conditions, with 40% of the volumetric exchange ratio (VER). As the number of sub-cycles increased from 1 to 4, the nitrogen removal efficiency gradually increased to 92.4%.
2. In the case of T-P, CODMn, BOD5, and SS, the removal efficiencies were relatively constant regardless of the number of influent distribution injection, and the average removal efficiencies achieved were 88.6, 83.7, 95.6, and 95.1%, respectively.
3. In order to keep the effluent total nitrogen concentration constant regardless of influent nitrogen load variation, the influent distribution injection strategy based on the ammonia nitrogen concentration in the reactor has been developed. When the ammonia nitrogen concentration in the reactor was set to 5 mg/L or less, the total nitrogen concentration in the effluent was 4.5 (4.0 ~ 4.9) mg/L. When the ammonia nitrogen concentration in the reactor was set to 10 mg/L or less, the effluent total nitrogen concentration was 9.0 (6.7 ~ 9.9) mg/L. It was always below the target effluent total nitrogen concentration in the reactor.
4. The removal efficiencies of total phosphorus, CODMn, BOD5 and SS were 95.5, 87.6, 96.5 and 96.0%, respectively, when influent water was distributed and injected by using an ammonia nitrogen sensor in the reactor.
5. Based on the results of this study, material balance for the sewage treatment plant of 60 ㎥/d scale was prepared for the field application. At this time, when the target effluent water quality of total nitrogen was set to 5 and 10 mg/L, the total nitrogen reduction load of the developed SBR process was estimated to be 2.11 and 1.81 kg/d, respectively.The purpose of this study was to develop a customized influent distribution injection strategy that can stably adhere to the water quality standards under in-situ conditions using the SBR process. In this study, the mechanism to improve the nitrogen removal efficiency by the influent distribution injection strategy was identified and the strategy was developed to maintain the total nitrogen (T-N) concentration constant regardless of influent nitrogen load variation by applying real-time operation technique. The effect of influent distribution injection strategy on removal efficiency of phosphorus (T-P), organic matter (BOD, COD) and suspended solid (SS) was further investigated.
1. As the number of influent distribution injection increases, the total nitrogen removal efficiency increased. The nitrogen removal efficiency was 62.6% under conventional SBR operating conditions, with 40% of the volumetric exchange ratio (VER). As the number of sub-cycles increased from 1 to 4, the nitrogen removal efficiency gradually increased to 92.4%. 2. In the case of T-P, CODMn, BOD5, and SS, the removal efficiencies were relatively constant regardless of the number of influent distribution injection, and the average removal efficiencies achieved were 88.6, 83.7, 95.6, and 95.1%, respectively.
3. In order to keep the effluent total nitrogen concentration constant regardless of influent nitrogen load variation, the influent distribution injection strategy based on the ammonia nitrogen concentration in the reactor has been developed. When the ammonia nitrogen concentration in the reactor was set to 5 mg/L or less, the total nitrogen concentration in the effluent was 4.5 (4.0 ~ 4.9) mg/L. When the ammonia nitrogen concentration in the reactor was set to 10 mg/L or less, the effluent total nitrogen concentration was 9.0 (6.7 ~ 9.9) mg/L. It was always below the target effluent total nitrogen concentration in the reactor.
4. The removal efficiencies of total phosphorus, CODMn, BOD5 and SS were 95.5, 87.6, 96.5 and 96.0%, respectively, when influent water was distributed and injected by using an ammonia nitrogen sensor in the reactor.
5. Based on the results of this study, material balance for the sewage treatment plant of 60 ㎥/d scale was prepared for the field application. At this time, when the target effluent water quality of total nitrogen was set to 5 and 10 mg/L, the total nitrogen reduction load of the developed SBR process was estimated to be 2.11 and 1.81 kg/d, respectively.
주제어
#Sequencing Batch Reactor nitrogen removal SBR customized effluent total nitrogen control real-time control ammonia sensing ammonia sensor
학위논문 정보
저자
김장현
학위수여기관
영남대학교 대학원
학위구분
국내박사
학과
환경공학과 환경공학전공
지도교수
정진영
발행연도
2018
총페이지
xiii, 179 p.
키워드
Sequencing Batch Reactor nitrogen removal SBR customized effluent total nitrogen control real-time control ammonia sensing ammonia sensor
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