http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
간헐포기MBR공정에서의 하수처리성능과 미생물의 군집구조해석
임병란,안규홍 대한상하수도학회 2002 상하수도학회지 Vol.16 No.6
The objective of this study was investigated for the microbial community structure and treatment performance of domestic wastewater in lab-scale submerged membrane bioreactor operated with anoxic-oxic cycles. Respiratory quinone profiles were applied as tools for identifying different bacterial populations. The cycle time program of bioreactor was control under anoxic/oxic of 60/90 minutes with an hydraulic retention time of 8.4 hrs. The average COD_Cr removal efficiency of domestic wastewater was as high as 93%. The results showed complete nitrification of NH_4^+-N generated during oxic period and up to 50% of the total nitrogen could be denitrified. The dominant quinone types of suspended microorganisms in bioreactor were ubiquinone (UQ)-8, -10, followed by menaquinone (MK)-6, and MK-7 for anoxic period, but those for oxic period were UQ-8, MK-6, followed by UQ-10 and MK-7. The microbial diversities of bioreactor at anoxic and oxic periods, calculated based on the composition of all quinones were 10.4 and 12.2-11.8, respectively. The experimental results showed that the microbial community structure in the submerged membrane bioreactor treating domestic wastewater was slightly affected by intermittent aeration.
방미란,임봉수,배병욱,김태응 대전대학교 산업기술연구소 1998 산업기술연구소 論文集 Vol.9 No.2
This study was carried to estimate the turbidity and organic removal efficiency of the coagulants, such as Alum, PACl, and PACS, depends on the variation of raw water quality. When turbidity, pH of the raw water quality were 1.0∼10.0NTU, 7.0NTU respectively, in other to get the goal water quality below 1.0NTU of turbidity, the optimum input doses of Alum, PACl, and PACS were 20∼30mg/ℓ, 10∼20mg/ℓ, and 10∼20 mg/ℓ, respectively. In that case of optimum input does, the removal efficiency of UV254 was about 30∼60%. When the turbidity, pH of the raw water quality were 10∼40NTU, around 7.0, respectively, the optimum input doses of PACl, and PACS were 30 mg/ℓ , 20 mg/ℓ, respectively But Alum, in other to get less than 2NTU of turbidity, was required to 50 mg/ℓ . In that case the removal efficiency of UV254 was also about 30∼60%.
폐슬러지 감량화 및 재활용을 위한 오존 처리시 하수슬러지내의 미생물 군집구조의 변화
홍준석,임병란,안규홍,맹승규 대한상하수도학회 2004 상하수도학회지 Vol.18 No.1
The change of the microbial community structure in excess sludge of different sewage treatment plants by ozone treatment was investigated by quinone profiles. The resulting ozone dosage ranged from 0.1 to 0.4 gO₃/gTS. In terms of overall sludge reduction, more than 50% reduction of the total sludge mass could be achieved by ozone treatment at 0.4 gO₃/gTS. Quinone concentration and type in sludge of different treatment plants were remarkably decreases with increasing ozone dose. Ubiquinones(UQs)-8, -10 and MK-8 were still remained in the ozonized sludge at 0.4 gO₃/gTS. The results of this study showed that the remaining microorganisms belong to UQs-8, -10 and MK-8 were difficult to destruct cell membrane or wall by ozonation. Fecal Streptococci and Salmonella were not detected at ozone dose of 0.2 gO₃/gTS, but Fecal Colifom was not detected at ozone dose of 0.4 gO₃/gTS.
영양제로서 결정 NH₄H₂PO₄를 첨가한 피혁 공장 폐수의 생물학적 처리
전명순,임병란,최기덕,이수구 서울산업대학교 산업대학원 1993 大學院論文集 Vol.2 No.-
피혁 공장 폐수의 생물학적 처리에 있어서 유입 폐수의 급격한 부하변동, 독성물질의 유입 및 미생물의 성장에 필요한 각종 영양소의 불균형 등으로 인해 처리효율이 낮고 운전관리상 어려움이 많다. 따라서 본 연구에서는 피혁공장 폐수의 생물학적처리효율을 높이기 위하여 각종 영양제의 주입에 따른 처리효과에 관한 실험을 실시하여 적절한 영양제를 선정하고, 최적 주입량 등을 결정 하였다. 실험대상 폐수는 반월공단내의 피혁 공단 폐수로서 중화 및 응집참전 밥법으로 전처리 한 후 포기조에 유입되는 폐수를 대상으로 하였다. 영양제로는 회분식 실험에서 피혁폐수의 처리효율이 가장 우수한 것으로 나타난 결정 APM (ammonium phosphate monobasic, NH₄H₂PO₄)을 이용하였다. 연속식 활성 슬러지 공장에 있어서 폐수의 유량, 슬러지 반송율, 결정 APM 주입량 등을 변화시켜 그에 따른 처리효율에 미치는 영향을 실험 고찰하였으며, 생물 반응공학적인 반응해석을 통하여 설계에 필요한 반응상수 등을 구하였다. 연속식 활성슬러지법에서체류시간 12시간의 조건에서 영양제 미주입시 BOD 제거효율은 68%에 불과하였으나, 영양제로서 요소와 인산을 주입한 경우 73%로 증가하였으며 결정APM을 주입한 경우 90% 이상의 높은 처리율을 얻을 수 있었다. 결정 APM의 최적 주입량은 회분식 실험의 경우 300㎎/L이었으나, 연속식 실험의 경우 50㎎/L로 낮게 나타났는데, 이는 반송되는 슬러지내의 높은 인농도와 미량원소에 기인한다. 결정 APM을 50㎎/L 주입한 후 수리학적 체류시간을 6∼30 시간의 범위로 변화시켜 실험한 결과, BOD 제거효율은 체류시간 6시간에서는 67%에 불과하였으나, 12시간의 경우 93%, 30시간의 경우 98%이었다. 따라서 BOD제거효율 90%이상을 얻기 위해서는 수리학적 체류시간은 11시간 이상, F/M비는 0,65 ㎏ BOD/㎏ MLVSS·d 이하로 운전하여야 하는 것으로 나타났다. This study was performed to enhance the treatment efficiency of leather wastewater adding APM(ammonium phosphate monobasic, NH₄H₂PO₄) crystal as nutrient which contained the sufficient mineral components. The effect of APM crystal on biological treatment were studied and its optimum dosage and kinetic coefficients were determined. In the continuous activated sludge system for field wastewater of Banwol leather complex, BOD removal efficiency could be obtained over 90% with adding APM crystal, while it was 68% without nutrients and 73% with urea and phosphoric acid in the condition of HRT 12hr and SRT 3 days. The optimum dosage of APM crystal was 50㎎/L which was low compared with 300㎎/L in batch test due to recycling sludge contained high content of phosphate and mineral nutrients. In the condition of adding APM crystal 50㎎/L and hydraulic retention time in the range 6∼30hr, BOD removal efficiencies were 67% for HRT 6hr, 93% for 12hr and 98% for 30hr. In order to obtain over 90% of BOD removal efficiency, HRT should be maintained over 11 hr and F/M ratio within 0.65 ㎏ BOD/㎏ MLVSS·d.
이수구,임병란,한종옥 서울産業大學校 1994 논문집 Vol.40 No.1
This study was performed to investigate the treatability of sewage from department store by attached growth biological treatment method using several fibrous media such as Supermodule made of polyvinylidine chloride and acry fiber(FBC), ringlace made of polyvinylidine chloride(HBC) and polypropylene(PP). The pilot plant was set up in the field of K department store and four consecutive aerated reactors were packed with each media and maintained in the condition of hydraulic retention time 12 hours. Experimental results showed that the effluent BOD concentration was stable even though the influent concentration was largely fluctuated in the range of 300~900㎎/L. BOD removal efficiencies in HBC, PP and FBC systems were 90%, 87% and 94%, respectively. The influent BOD was mainly removed in the first, second and third reactors and the removal rate in the fourth reactor was the lowest due to the low concentration and low influent load. The concentration of biomass attached to fibrous media was the highest in the FBC system compared with HBC and PP systems. Total concentration of volatile solids in the FBC system was 5,900 ㎎/L which was high compared with the other media systems. The production ratios of waste sludge were 9.2, 8.45 and 7.3 gDS/㎥ of influent sewage in HBC, PP and FBC systems, respectively.