하수처리장에서의 음식물쓰레기와 농축 슬러지의 혐기성 병합 처리 조건 선정

박종부(Jong-Bu Park),김윤석(Yoon-Seok Kim),최성수(Sung-Su Choi),한승호(Seung-Ho Han) 유기성자원학회 2000 유기물자원화 Vol.8 No.2

음식 쓰레 기중 성분별 메탄 전환율을 측정 한 결과, 배추의 경우 297 ml CH4/ g VS로 최대였으며 음식 쓰레기의 메탄화율은 306.7 ml CH4/g VS 였다. 또한, 산발효 조건 선정 실험을 수행한 결과, 발효 36시간 경과후 호기성 처리의 경우, acetate, propionate, iosbutyrate, valerate 및 4-methy l-n -valerate의 농도는 각각 7,000 ~7,200 ppm, 260 ~ 280 ppm, 380 ~ 400 ppm, 40 ~ 50 ppm 및 250 ~ 280 ppm으로 유기산의 85 %이상이 acetate였으며 유기물의 분해율은 30 %였고 혐기성 처리 경우, 유기산 농도는 각각 1, 400 ~ 1,600 ppm, 30 ~40 ppm, 220 ~ 250 ppm, 260 ~ 300 ppm 및 75 ~ 100 ppm으로 유기산의 70 % 이상이 acetate 였다 유기물 분해율 25 % 였으며 적정 혐기성 산발효시간은 12시간 이었다. NaCl 1.0 %이하, 유기산 1,000 ppm이하 및 pH 6.8 ~ 7.2 범위에서 혐기성 소화가 정상적으로 이루어졌으며 음식 쓰레기:농축 슬러지의 흔합비를 달리하여 소화 실험을 진행한 결과, 최대 처리 가능량은 2:8 이었다. 이 때 BOD 및 TS 분해율은 40 ~ 50 % 및 30 %이상이었으며 메탄 발생량은 107.7 ml CH4/g VS 였다. 음식 쓰레기의 혐기성 소화 잔사의 발아율은 83 ~ 95 %였으며 중금속은 구리 30.1 ppm, 크롬 23.6 ppm만 검출되었다. The objective of rhis study was to evaluare me possibiliry of co-digestion of food wasre and sewage sludge mixture using anaerobic sysrem. The Biochemical memane Porentials of cabbage and food wasre were 297 ml CH4/g VS and 306.7 ml CH4/g VS, respectively. The biodegradabiliry of food waste was 60 %. The concenrrations of acetare, propionate, and isoburyrate produced during me aerobic acidogenesis of food wasre for 36 hours were 7,000 ~ 7,200 ppm, 260 ~ 280 ppm, 380 ~ 400 ppm, and 40 ~ 50 ppm, respectively, of which acetate was over 85 %. The concentrations of acetate, propionare, and isoburyrate produced during me anaerobic acidogenesis for 36 hours were 1 ,400 ~ 1,600 ppm, 30 ~ 40 ppm, 220 ~ 250 ppm, and 260 ~ 300 ppm, respectively, of which acetate was ovet 70 %. The biodegradabilities of aerobic and anaerobic acidogenesis were 30 % and 25 %, respectively. Memanogensis could be activated under 1 % ofNaCl and 1,000 ppm of volatile fatry acids at me range of pH 6.8 ~ 7.2. The maximum mixture ratio of food waste and sewage sludge in me presenr study was 2:8 by me result of VS removal rate and Memane production

응집제의 첨가에 따른 Membrane bioreactor의 고도처리 효율 연구

박종부 ( Jong Bu Park ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.2

This study was performed to investigate the characteristics of nutrient removal of municipal wastewater in the submerged membrane bioreactor by addition of alum directly into aerobic tank. Membrane bioreactor consists of three reactors such as two intermittent anaerobic tanks and the aerobic tank with hollow fiber membrane. The removal efficiencies of CODCcr, BOD, SS, TN and TP on the membrane bioreactor were 94.0%, 99.1%, 99.9%, 66.9%, and 58.9%, respectively. In addition, The removal efficiencies of CODcr, BOD, SS, TN and TP on the membrane bioreactor with alum addition were 93.4%, 99.0%, 99.9%, 63.2%, and 96.8%, respectively. There was little difference between them on the nutrient removal efficiencies except phophorus removal. The estimated sludge production, specific denitrification rate, specific nitrification rate and phosphorus removal content on the membrane bioreactor were 1.76 kgTSS/d, 0.055 mgNO3-N/mgVSS·d, 0.031 mgNH4-N/mgVSS·d, and 0.095 kgP/d, respectively. And The estimated sludge production, specific denitrification rate, specific nitrification rate and phosphorus removal content on the membrane bioreactor with alum addition were 2.90 kgTSS/d, 0.049 mgNO3-N/mgVSS·d, 0.030 mgNH4-N/mgVSS·d, and 0.160 kgP/d, respectively. The alum content added was 1.7 molAl/molP on an average. The increasing ratio of tran-membrane pressure on the membrane bioreactor was 0.0056 kgf/cm2·compared to 0.0033 kgf/cm2·d on the membrane bioreactor with alum addition. There was a slightly reduction effect on membrane fouling by alum addition.

도시 하수에서의 생물학적 고도처리를 위한 MBR공정 개발 및 화학세정에 의한 미생물 활성도 영향 분석

박종부 ( Jong Bu Park ),박승국 ( Seung Kook Park ),허형우 ( Hyung Woo Hur ),강호 ( Ho Kang ) 한국물환경학회 2009 한국물환경학회지 Vol.25 No.1

분리막 종류에 따른 하수의 생물학적 고도처리 효율 비교 연구

박종부 ( Jong Bu Park ),신경숙 ( Kyung Sook Shin ),허형우 ( Hyung Woo Hur ),강호 ( Ho Kang ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.3

This study was performed to investigate the characteristics of nutrient removal of municipal wastewater in the membrane bioreactor system with the different types of membrane. Membrane bioreactor consists of three reactors such as two intermittent anaerobic and the submerged membrane aerobic reactor with flat sheet and hollow fiber membrane, respectively. The removal efficiencies of COD(Cr), BOD, SS, TN and TP on the flat sheet membrane bioreactor were 94.3%, 99.0%, 99.9%, 70.3% and 63.1%, respectively. In addition, The removal efficiencies of COD(Cr), BOD, SS, TN and TP on the hollow fiber membrane bioreactor were 94.0%, 99.3%, 99.9%, 69.9% and 66.9%, respectively. The estimated true biomass yield, specific denitrification rate (SDNR), specific nitrification rate (SNR) and phosphorus removal content on the flat sheet membrane bioreactor were 0.33 kgVSS/kgBOD·d, 0.043 mgNO3-N/mgVSS·d, 0.031 mgNH4-N/mgVSS·d, and 0.144 kgP/d, respectively. In addition, the estimated true biomass yield, specific denitrification rate (SDNR), specific nitrification rate (SNR) and phosphorus removal content on the hollow fiber membrane bioreactor were 0.30 kgVSS/kgBOD·d, 0.067 mgNO3-N/mgVSS·d, 0.028 mgNH4-N/mgVSS·d, and 0.121 kgP/d, respectively. There was little difference between the flat sheet and hollow fiber on the nutrient removal efficiencies except SNR and SDNR. These differences between them were caused by the air demand to prevent the membrane fouling. The flux and oxygen demand for air scouring were 19.0 L/m2/hr and 2.28 m3/min for the flat sheet membrane, and 20.7 L/m2/hr and 1.77 m3/min for the hollow fiber membrane on an average.

도시 하수의 생물학적 고도처리를 위한 분리막 공정의 개발 및 동역학적 계수 산정 연구

박종부(Jong Bu Park),박승국(Seung Kook Park),허형우(Hyung Woo Hur),강호(Ho Kang) 大韓環境工學會 2009 대한환경공학회지 Vol.31 No.2

본 연구는 혐기조, 안정화조, 무산소조, 막분리호기조로 구성된 membrane bioreactor의 운영을 통하여 도시 하수의 영양염류 제거 특성을 규명하였다. 수리학적 체류시간(HRT)과 슬러지 체류시간(SRT) 및 운영 여과 플럭스의 평균값은 각각 6.2시간, 34.1일과 19.6 L/m2/hr (LMH)이었으며, 공정을 운전한 결과, COD(Cr), SS, TN 및 TP의 평균 제거율은 각각 94.3%, 99.9%, 69.4% 및 74.6%이었다. 슬러지 생산계수, SDNR, SNR, SPPR 및 SPUR은 각각 0.653 kgVSS/kgBOD/d, 0.044 mgNO₃-N/mgVSS/d, 0.035 mgNH₄-N/mgVSS/d, 51.0 mgP/gVSS/d 및 5.4 mgP/gVSS/d였다. 또한, 생산된 슬러지의 평균 질소 및 인 함량은 각각 8.86%와 3.5%였다. This study was performed to investigate the characteristics of nutrient removal of municipal wastewater in membrane bioreactor system. Membrane bioreactor consists of four reactors such as the anaerobic, the stabilization, the anoxic and the submerged membrane aerobic reactor with two internal recycles. The hydraulic retention time (HRT), sludge retention time (SRT) and flux were 6.2 h, 34.1 days and 19.6 L/m2/hr (LMH), respectively. The removal efficiency of COD(Cr), SS, TN and TP were 94.3%, 99.9%, 69.4%, and 74.6%, respectively. The estimated true biomass yield, specific denitrification rate (SDNR), specific nitrification rate (SNR), specific phosphorus release rate (SPRR) and specific phosphorus uptake rate (SPUR) were 0.653 kgVSS/kgBOD/d, 0.044 mgNO₃-N/mgVSS/d, 0.035 mgNH₄-N/mgVSS/d, 51.0 mgP/gVSS/d and 5.4 mgP/gVSS/d, respectively. The contents of nitrogen and phosphorus of biomass were 8.86% and 3.5% on an average.

미생물 호흡률 측정에 의한 관거시스템 유형별 하수의 기질 분율 평가

박종부(Jong Bu Park),허형우(Hyung Woo Hur),강호(Ho Kang),장성언(Sung Oun Chang) 大韓環境工學會 2009 대한환경공학회지 Vol.31 No.8

산소소비속도 측정에 의한 미생물 호흡률 분석방법에 의해 하수의 유기물질과 미생물 분율을 평가하였다. 하수의 유기물과 미생물 분율은 생물학적 공정의 모델링을 위한 중요한 기초자료이다. 본 연구에서 하수의 유기물 분율을 측정한 결과, 미생물에 의해 분해가 빠른 유기물, 분해가 느린 유기물, 분해되지 않는 용존성 유기물, 분해되지 않는 고형 유기물과 종속영양미생물의 분율은 각각 26.6%, 41.5%, 8.5%, 14.7% 및 8.7%였다. 또한, 질소 분율을 측정한 결과, 질산성 질소, 암모니아성 질소, 용존성 비분해 유기성 질소, 용존성 분해 유기성 질소 및 분해가 느린 유기성 질소의 분율은 각각 약 3.7%, 64.9%, 4.7%, 9.4% 및 17.4%였다. Respirometric analysis of domestic sewage by measuring oxygen uptake rate(OUR) was carried out for the experimental assessment of the organic and biomass fractions. The data of the organic and biomass fractions in sewage is essential for the activated sludge model to optimize the biological treatment plant. As a result of this study, the fractions of readily biodegradable substrate(S(S)), slowly biodegradable substrate(X(S)), inert soluble substrate(S(I)), inert particular substrate(X(I)) and heterotrophic biomass(X(HAB)) were about 26.6%, 41.5%, 8.5%, 14.7% and 8.7% on the basis of chemical oxygen demand(COD(Cr)), respectively. And the fractions of nitrogen were also studied. The fractions of soluble nitrate nitrogen(S(NO)), soluble ammonia nitrogen(SNH), soluble nonbiodegradable organic nitrogen(S(NI)), soluble biodegradable organic nitrogen(S(ND)) and slowly biodegradable organic nitrogen(X(ND)) were about 3.7%, 64.9%, 4.7%, 9.4% and 17.4%, respectively.

압출형 반응기를 이용한 음식물 쓰레기의 이상 고온 혐기성 소화 공정 연구

박종부(Jong Bu Park),최성수(Sung Su Choi),허형우(Hyung Woo Hur),한승호(Seung Ho Han) 大韓環境工學會 2001 대한환경공학회지 Vol.23 No.11

생물학적 질소 인제거공정 : 도시 하수에서의 생물학적 고도처리를 위한 MBR공정 개발

박종부 ( Jong Bu Park ),박승국 ( Seung Kook Park ),허형우 ( Hyung Woo Hur ),강호 ( Ho Kang ) 한국물환경학회 ( 구 한국수질보전학회 ) 2008 공동 추계학술발표회 Vol.2008 No.-

음식물 쓰레기의 혐기성 소화슬러지의 응집 및 탈수 특성에 미치는 영향

박종부(Jong-Bu Park),최성수(Sung-Su Choi),박승국(seung-Kook Park),허형우(Hyung-Woo Hur),한승호(Seung-Ho Han) 유기성자원학회 2001 유기물자원화 Vol.9 No.3

본 연구에서는 음식물 쓰레기의 혐기성 소화 슬러지의 탈수 효율을 증대시키기 위하여 응집제 및 응집보조제의 선정 및 탈수 특성을 규명하고자 하였다. 본 연구에서 사용한 혐기성 슬러지는 음식물 쓰레기를 55"C 에서 15일간 소화시켜 얻었으며 이 때의 평균 가스 발생량 및 메탄 함량은 각각 1.1m3/kg VS 및 63% 였으며 소화액의 성상은 각각 pH 7.8, 총고형물 1.5% ,CODcr 18 , 500mg/L이었다 또한. TKN과 TP는 각각 2.800mg/L과 582mg/L이었으며 암모늄 이온과 인산이온은 2.077mg/L과 415mg/L이었다. 이러한 혐기성 소화액에 각종 응집제를 투입하여 응집 실험 결과, FeCb와 강양이온계 고분자 응집제만이 응집 효과가 있었으며 FeCb와 강양이온계 고분자 응집자의 적정 투입 농도는 각각 500mg/L과 50 - 100mg/L였다 또한, FeCb 500mg/L을 첨가하여 1 차 얻은 혐기성 슬러지에 고분자 응집제의 농도를 달리하면서 CST(Capillary Suction Time) 를 측정한 결과, 강양이온계 고분자 응집제 80mg/L을 혼합하였을 때 최적의 탈수 조건이 형성됨을 알 수 있었다. In this study, the effect of physico-chemical variables on sludge conditioning was dεtermined to enhance dewaterability of effiuenr produced from the thermophiIic anaerobic digestion of food waste. The gas production rate and methane content during the anaerobic digestion offood waste were l.lm3/앵 vs and 63%, rε, speccively, and the biodegradability of volatile s이ids was 87.5%. The concentrations of CODcr, TKN and TP of effiuenr from gestor were 18,500mg/L, 2,800mg/L, and 582mg/L, respectively. At the jar test to screen the flocculant for the dewatering of effiuent fÌom 이gestor, FeCh and strong carionic polymer were effective on making flocs in the effiuenr. The condicion of floαulation of effiuent were 500mg/L of FeCh and 50 - 100 mg/L of srrong carionic polymer, respectively. As the result of measuring of dewarerability potentia1 of effuent to determine the mixing rario between FeCb and polymer by capilIaty suction time (SCT), optimum condition was 500mg/L ofFeCh and 80mg/L of srrong cationic polymer.

하수 고도처리를 위한 유로변경형 MBR공정의 개발

박종부(Jong Bu Park),신경숙(Kyung Sook Shin),허형우(Hyung Woo Hur),강호(Ho Kang) 大韓環境工學會 2011 대한환경공학회지 Vol.33 No.7

본 연구는 2개의 간헐혐기조, 막분리호기조 및 슬러지 가용화로 구성된 유로변경형 membrane bioreactor의 운영을 통하여 도시 하수의 영양염류 제거 특성을 규명하였다. 수리학적 체류시간(HRT)과 운영 여과 플럭스의 평균값은 각각 6.5 시간과 20.4 L/m2·hr (LMH)이었으며, 공정을 운전한 결과, CODCr, SS, TN 및 TP의 평균 제거율은 각각 94.0%, 99.3%, 99.9%, 69.9%와 66.9%이었다. 슬러지 생산계수, SDNR, SNR, SPPR 및 SPUR은 각각 0.34 kg VSS/kg BOD·d, 0.067 mg NO₃-N/mg VSS·d, 0.028 mg NH₄-N/mg VSS·d, 16.0 mg P/g VSS·d 및 2.1 mg P/g VSS·d였다. 또한, 생산된 슬러지의 평균 질소 및 인 함량은 각각 8.9%와 3.5%였다. This study was performed to investigate the characteristics of nutrient removal of municipal wastewater in membrane bioreactor system. Membrane bioreactor consists of four reactors such as two intermittently anaerobic tanks, the oxic tank and the sludge solubilizaion tank with an internal recycle. The hydraulic retention time (HRT) and flux were 6.5 hours and 20.4 L/m2·hr (LMH), respectively. The removal efficiency of CODCr, SS, TN and TP were 94.0%, 99.3%, 99.9%, 69.9%, and 66.9%, respectively. The estimated true biomass yield, specific denitrification rate (SDNR), specific nitrification rate (SNR), specific phosphorus release rate (SPRR) and specific phosphorus uptake rate (SPUR) were 0.34 kgVSS/kgBOD·d, 0.067 mgNO₃-N/mgVSS·d, 0.028 mgNH₄-N/mgVSS·d, 16.0 mgP/gVSS·d and 2.1 mgP/gVSS·d, respectively. The contents of nitrogen and phosphorus of biomass were 8.9% and 3.5% on an average.