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서정범(Jeong Beom Seo),황창민(Chang Min Hwang) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.7
본 연구에서는 회분식 실험 및 A₂/O 공법의 연속식 실험으로 구리가 생분해, 산소소모율 및 질산화에 미치는 영향을 검토하였다. 본 연구의 결과를 요약하면 다음과 같다. 구리 영향 실험 결과 유기물 분해는 회분식 실험의 경우 구리 농도 4.5mg/L 이상, 연속식은 구리 농도 2.0 mg/L 이상일 때 영향을 미쳤다. 질산화 및 질소 제거의 경우 회분식은 구리 농도 4.5 mg/L 이상에서 질산화에 영향을 미쳤으며, 연속식의 경우 구리 농도 1 mg/L 이상일 때 질소 제거에 영향을 미쳤다. 인 제거의 경우 회분식은 구리 농도 4.5 mg/L, 연속식은 구리 농도 2 mg/L 이상일 때 영향을 미치는 것으로 나타났다. 산소소모율의 경우 회분식과 연속식 모두 구리 농도 1.5 mg/L 이상일 경우 미생물 활성에 나쁜 영향을 주어 산소소모율이 낮아졌다. This study was performed to examine the effect of copper on the biodegradability, nitrification, denitrification and oxygen uptake rate (OUR) using batch reactor and continuous flow stirred tank reactor (CSTR) of anaerobic/anoxic/oxic (A₂/O). The results of this study can be summarized as follows. In the case of the effect of copper on organic treatment, the bad effect initiated when it was above 4.5 mg/L copper with batch reactor and above 2.0 mg/L copper with CSTR. Concerning the case on nitrification and removal of nitrogen, it showed bad effect when copper was above 4.5 mg/L with batch reactor for nitrification and 1.0 mg/L with CSTR for the removal of nitrogen. The bad effect on the removal of phosphorus began when it was 4.5 mg/L copper with batch reactor and 2 mg/L copper with CSTR. In the case of OUR, it decreased as microbial activity was affected when copper concentration was above 1.5 mg/L in both case of batch reactor and CSTR.
활성슬러지 공법의 생분해성 및 침강성에 미치는 염분 농도의 영향
서정범 ( Seo Jeong Beom ),황창민 ( Hwang Chang Min ) 한국물환경학회 2003 한국물환경학회지 Vol.19 No.6
This study was aimed at finding out the influence of salinity on the treatability and settleability in activated sludge process. For this, according to salinity, the distinctive feature of organic concentration such as TOC and BOD, sludge volume index(SVI) and observed yield coefficient were examined. The result of batch reactor test showed that the influence of salinity at the high concentration of MLSS was low on the removal efficiency of TOC. On the other hand, the result of continuous flow stirred tank reactor(CSTR) test showed that the TBOD removal efficient was higher the F/M ratio 0.4㎏BOD/㎏MLSS·day than the F/M ratio 0.2㎏BOD/㎏MLSS·day. The influence of salinity on the SVI was found higher the F/M ratio 0.4㎏BOD/㎏MLSS ·day than the F/M ratio 0.2㎏BOD/㎏MLSS·day to 10,000㎎/L of salinity. The test also showed that filamentous microorganism rapidly increased when salinity was l5,000㎎/L. SVI was stabilized in the reactor with F/M ratio 0.4㎏BOD/㎏MLSS·day causing activated sludge more viscous. On the other hand, when the F/M ratio kept at about 0.2㎏BOD/㎏MLSS·day, SVI increased rapidly due to a sludge bulking.
서정범(Jeong Beom Seo),황창민(Chang Min Hwang) 大韓環境工學會 2015 대한환경공학회지 Vol.37 No.4
본 연구에서는 회분식 실험 및 A₂/O 공법의 연속식 실험으로 아연이 생분해, 산소 소모율, 질산화 및 탈질에 미치는 영향을 검토하였다. 본 연구의 결과를 요약하면 다음과 같다. 아연 영향 실험 결과 유기물 분해는 회분식 실험의 경우 아연농도 12 mg/L까지 영향을 미치지 않았으며, 연속식 실험의 경우 아연 농도 3.0 mg/L 이상일 때 생분해성이 낮아졌다. 질산화 및 질소 제거의 경우 회분식은 아연 농도 6.0 mg/L 이상일 때 질산화율이 낮아졌으며, 연속식의 경우 아연 농도 3.0 mg/L이상일 때는 질소 제거율이 낮아졌다. 인 제거의 경우 회분식은 아연 농도 6.0 mg/L, 연속식은 아연 농도 3.0 mg/L 이상일 때 인 제거율이 낮아지는 것으로 나타났다. 산소 소모율의 경우 연속식의 아연 농도가 3.0 mg/L 이상이면 미생물 활성에 영향을 주어 산소 소모율이 낮아졌다. This study was performed to examine the effect of zinc on the biodegradability, nitrification, denitrification and oxygen uptake rate (OUR) using batch reactor and continuous flow stirred tank reactor (CSTR) of anaerobic/anoxic/oxic (A₂/O). The results of this study can be summarized as follows. In the case of the effect of zinc on organic treatment, zinc had no effect up to 12 mg/L with batch reactor but biodegradability was lowered when it was above 3.0 mg/L with CSTR. Concerning the case on nitrification and removal of nitrogen, nitrification rate was lowered when zinc was above 6.0 mg/L with batch reactor and removal rate of nitrogen was lowered when zinc was above 3.0 mg/L with CSTR. Removal rate of phosphorus was lowered when it was above 6.0 mg/L zinc with batch reactor and above 3.0 mg/L zinc with CSTR. In the case of OUR, it decreased as microbial activity was affected when zinc concentration was above 3.0 mg/L in CSTR.