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RISS 인기검색어
- 검색키워드
- 저자 : 안송엽 ( Song-yeob Ahn ) (검색결과 57 건)
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안송엽 ( Song Yeob Ahn ),권희태 ( Hee Tai Kwon ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.2
This research connected the SUS electrode with a negative and an electrode of SUS, Carbon, Cu and Zn with a positive a so that the removal efficiency of a heavy metal were practiced quality of plate, concentration of sample, plate gap residence time and voltage which were respectively charged. Especially, this study presents. the removal efficiency of Cu and Zn. The parameters tested operating both batch and continuous electrocoagulation were electrolytic plate, plate distance, and current density with removal efficiencies of COD, SS. Good water quality of treated effluent was obtained as COD<10.0mg/L, SS<10.0mg/L with AL and SUS plate. Only 35~50% of nitrogen in raw municipal wastewater was removal by AL and SUS plate. Electricity decomposition was used with a submerged Electrolysis process in this experiment, and there was low-concentration waste water, too, organic matter, nitrogen removal were practiced. After a response fixes influx 30 minutes dozing off, the volume flowing from 10 minutes. The COD removal rate that were a showed a high removal rate more than all reactor each 85%. The SS removal rate showed a comparatively similar removal rate. As electrode gap was increased in the same electric pressure, electric resistance of solution did. The survey showed similar results that removal efficiency was decreased because IR drop happened, as a result of creased electrode gap. According to a change of time, removal efficiency was showed comparatively steady removal rating from the early of reaction velocity. It took to 40 from 60 minutes to remove 70~88% Cu and Zn showed a parallel from on the whole.
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안송엽 ( Ahn Song-yeob ),김용목 ( Kim Yong-mog ),권희태 ( Kweon Hee-tae ),김두정 ( Kim Du-jung ) 한국환경기술학회 2000 한국환경기술학회지 Vol.1 No.2
석가공폐수 처리는 처리 과정에서 약품응집제를 사용하고 있기 때문에 환경오염 및 생태계의 변화에 많은 문제점을 유발하고 있다. 본 연구에서는 경사분리기를 개발 제작하여, 석가공폐수처리에 대한 처리특성을 규명하고자 COD, SS, 탁도를 분석하였으며, 실험결과는 유입수량 0.3 ㎖/sec의 경우 회전속도 3500rpm에서 COD제거효율 86.92%~90.54%, SS제거효율 97.56%~98.53%이었고, 유입수량 0.4㎖/sec의 경우 회전속도 3500rpm에서 COD제거율효율 83.11%~89.46%, SS제거효율 96.33%~97.07%를 나타내었다. 탁도는 유출수에서 220~350NTU, 제거효율 98.24%~99.11%로 나타냈다. The present treatment system of stone wastewater cause various environmental pollutions in ecosystem due to the fact that it uses chemical coagulants in the treatment process. In this paper, we developed and manufactured the decanter and then analysed the removal retes of COD, SS and turbidity to reveal the treatment characters according to stone wastewater treatment. As a result experiment showed COD removal rete was 86.92%~ 90.54% and SS 97.56%~98.53% when the feed velocity was 0.3㎖/sec and rotational speed Was 3500rpm. On the other hand, It showed COD removal rate is 83.11%~89.46% and SS 96.33%~97.07% when the feed velocity was 0.4㎖/sec and rotational speed 3500rpm. Turbidity showed 220~350NTU, removal rate was 98.24%~99.11% in effluent water.
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조건부 가치측정법에 의한 산림보전의 환경가치 편익 추정
안송엽 ( Ahn Song-yeob ),소재철 ( So Jae-chul ),권희태 ( Kwon Hee-tae ) 한국환경기술학회 2004 한국환경기술학회지 Vol.5 No.1
본 연구에서는 비시장재화의 가치 측정을 위해 환경재의 편익을 추정하였으며, 비시장재의 가치 추정방법은 헤도닉 가격모형, 여행비용 접근법과 같은 간접추정 방식과 조건부 가치측정법(Contingent Valuation Method)과 같은 직접 추정방식(Direct-Estimation Method)이 있는데, 본 논문에서는 조건부 가치측정법을 제시하였다. 환경개선으로 인해 발생하는 편익 즉, 환경과 경관의 개선, 삶의 질 향상, 교통, 건강상의 안전 등의 비시장재의 편익을 정량적으로 평가할 필요가 있다. 개발 예정 사업지구를 개발하는 대신에 현재와 같은 야산으로 그대로 보존하는데 대해 산림지역을 중심으로 한 경제권역에 속하는 주민들이 부여하는 총 가치는 연간 36억 7천 6백만원에서 99억 8천 9백만원에 이르는 것으로 추정되었다. 이 산림보존에 대한 총 편익이 사업지구 개발의 경제적 타당성 분석에 있어서 환경비용으로 사업비에 추가되어야 할 것이다. The contingent valuation methods of the non-marketed goods include the indirect estimation method such as Hedonic Price Model and Time Cost Method and direct estimation method such as Contingent Valuation Method(CVM). These valuation methods that have progressed to valuate the non-marketed goods can be applied not only to the environmental economics but also to the valuation of the non-marketed goods such as earth work, environment, construction, traffic, health and etc. In case of conserving project area as a hill as it is instead of developing it as a limestone mine, the total value that would be given to the residents there in the forest region-centered economic area was estimated 3,676,000,000~9,989,000,000 Won/year. This total benefit of forest conservancy should be added as an environmental expense into the project expenses in analyzing the economic feasibility of limestone mine development of project area.
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안송엽 ( Ahn Song-yeob ),김환홍 ( Kim Hwan-hong ),권희태 ( Kweon Hee-tae ) 한국환경기술학회 2000 한국환경기술학회지 Vol.1 No.1
본 연구는 유동상의 원리를 이용하여 무산소-호기조의 유기물과 질소제거에 미치는 영향을 분석 연구하였다. 두 개의 반응조는 질산화와 탈질화를 하기 위하여 생물학적 유동상을 설계에 이용하였다. 실험 결과 순환비는 무산소조 30과 호기조 40이 최적조건이 되는데, 순환비가 DO 농도의 증감과 관련되어 유기물이 제거됨을 보여주었다. 무산소조의 알카리도 생성량 80mg/ ℓ, 호기조의 카리도 소비량 160mg/ ℓ 에서 좋은 처리효율이 나타났다. 이것은 무산소조에서 탈질화 반응이 원활히 일어나게 되는데, 이는 질산화 반응보다 일반적으로 pH에 덜 민감하기 때문인 것으로 판단되었다. The study is analyzed to effecy organic matter and nitrogen removal of anoxic-aerobic reactor by using principle of fluidized bed. Two cases are presented which can be used in the design of biological fluidized bed for the nitrification and the denitrification. The results obtained through the experiments were as follows. Recycle ratio are condition of optimum at Anoxic reactor 30 and Aerobic reactor 40 respectively. Recycle ratio is showed to removal of organic matter that is relatively more or less of DO concentration. Treatment efficiency is showed a good alkalinity production 80mg/ℓ of Anoxic and alkalinity Consumption 160 mg ℓ of Aerobic. Nitrification reaction become to harmonious in aerobic Reactor. It is less sensitive to pH then denitrification reaction.
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VSE Process를 이용한 유기물, 질소 및 인의 처리 효율
안송엽 ( Song-yeob Ahn ),권희태 ( Hee-tai Kwon ) 한국환경기술학회 2008 한국환경기술학회지 Vol.9 No.1
유기물, 질소 및 인 등의 제거를 위해 처리 시설에 VSE 공정을 조합한 시스템에 의해 축산폐수의 처리 특성을 규명하였다. VSE 공정에 장착할 막을 선정하기 위하여, RO막중 ACM-4, ESPA, BW-30, X-20을 대상으로 제거능력을 비교한 결과 ESPA막이 가장 우수하였으며, 이 ESPA막은 CODcr 98.7%, T-N 98.7%, T-P 98.3%의 제거율을 나타내었다. VSE공정에 ESPA막을 장착하여 T-N 192~1,420mg/ℓ, T-P 35~94mg/ℓ의 유입수를 처리한 결과 T-N 7~10mg/ℓ, T-P 0.6~1.0mg/ℓ의 유출수를 얻었다. Effective in removing of organic matter, nitrogen and phosphate are filled into reactor, and as a treatment process, VSE(Vibratory Shear Enhanced). From the comparing the removal yields on RO membrane treatment such as ACM-4, ESPA, BW-30, X-20, in order to chose an adequate one that will be used on VSE process, ESPA membrane was shown the superior one than others. By adopting the ESPA membrane to VSE process, CODcr, T-N and T-P removal efficiency were brought up to 98.7%, 98.7%, 98.3%, respectively. Additionally after then the performs of this treatment, the concentration ranges of 192~1,420 mg/ℓ for T-N and 35~94 mg/ℓ for T-P contained in influent were converted into 7~10 mg/ℓ, 0.6~1.0 mg/ℓ on effluent, respectively.
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안송엽(Song Yeob Ahn) 한국수처리학회 1999 한국수처리학회지 Vol.7 No.2
This is a study on the removal of nitrogen in wastewater by the biological fluidized bed. The results obtained through varying the recycle ratio, the hydraulic retention time and the recirculation ratio between reactors showed that the organic removal efficiency and the nitrogen removal efficiency were above 93%, 88% respectively, and the denitrification efficiency was above 85% when C/N ratio and H/A ratio were above 5 and 3.16, respectively. The biological fluidized bed obtained 93% BOD removal in 48min, 87% NH₄-N removal in 32min, and 84% NO₃-N removal in each reactor. In anoxic reactor, the recycle ratio, the total hydraulic retention time and the recirculation ratio were 30, 32min, 3 at 34℃. In aerobic reactor, 40, 48min, 3 at 28℃.
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