질산칼슘 주입에 의한 저수지 퇴적물의 인용출 제어효과

임봉수,박희동,유성환 대한상하수도학회 2003 상하수도학회지 Vol.17 No.1

This study was conducted to investigate the control effect of phosphorus release from the sediments in lake by calcium nitrate injection. The maximum release rate of T-P after 5 days was 53.5㎎ T-P/㎡ · d for release experiment, while reduced to 28.9㎎ T-P/㎡ · d when 8.3L/㎡ as 5% calcium nitrate was injected, decreased to about 46%. The maximum release rate of PO_4-P after 2 days was 9.0㎎ PO_4-P/㎡ · d and little release at the beginning of the experiment. The PO_4-P release control by injection of calcium nitrate was very effective. Control effects of organics oxidation and phosphorus release in sediment was good since COD was reduced, PO_4-P content was fixed, and NAI-P was almost fixed compare to raw sediment after release.

대기모델을 이용한 하수처리장 악취의 영향도 산정에 관한 연구

임봉수,박상진 대전대학교 기초과학연구소 1990 自然科學 Vol.1 No.-

하수처리장에서 발생하는 악취는 근무여건 및 주변생활 환경을 해치고 있어 주요 민원 대상이 되고 있으나 악취가 갖고 있는 특성으로 인해 정량적인 평가가 어려운 실정이다. 본 연구에서는 검지관 및 3점 비교식취대법을 이용하여 악취를 정량적으로 실측하고 TCM-2, TEM-8의 두 대기모델을 이용하여 악취가 주변에 미치는 영향을 정량적으로 파악하였다. 취기물질 성분별 모델링결과 최대농도는 TCM-2,의 경우 H₂S 0.21∼0.38ppb, CH₃NH₂0.24∼0.44ppb, NH₃0.24∼0.43ppb였으며, TEM-8의 경우 H₂S 75.0∼98.0ppb, CH₃NH₂99.6∼129.2ppb, NH₃99.2∼128.7ppb를 나타냈다. 취기농도는 모델링결과 TCM-2는 103∼123, TEM-8은90∼165의 분포를 보였다. Odor from sewage treatment plants has been one of the major civil complaints since it disturbs the working environment and surrounding areas. It has been normal to measure odor using human sense, not using quantitative analysis, due to characteristics of odor. In this study, the odor from the sewage treatment plant at G city was measured using the detection tube method and the triangular sensory test, and the effect of odor to surrounding areas was evaluated quantitatively using two odor models, TCM-2 and TEM-8. In TCM-2 model, maximum concentrations for malodorous substances were as follows : H₂S 0.21∼0.38ppb, CH₃NH₂0.24∼0.44ppb, and NH₃0.24∼0.43ppb. In TEM-8 model, maximum concentrations were as follows : H₂S 75.0∼98.0ppb, CH₃NH₂99.6∼129.2ppb, and NH₃99.2∼128.7ppb. As for the concentration modelling of malodorous substances, TCM-2 showed the distribution range between 103 and 123, and TEM-8 between 90 and 165.

活性슬러지工法에서 微生物濃度에 따른 基礎設計要素의 比較硏究

林鳳洙,李充根 大田大學校 1989 論文集 Vol.8 No.1

해당정보 없음

대청댐 역조정지 부근의 수질변화특성 조사

임봉수,방미란,김태응,정덕우 大田大學校 環境問題硏究所 1997 환경문제연구소 논문집 Vol.2 No.-

This survey was accomplished to know the characteristics on the variation of water quality around Daechung-dam regulating reservoir. The algae bloom occurres near the chungju and Taejon intake station in autumn every year. It is possible to cause the taste and odor problems in the water supply if this reservoir will be a intake station. The comparsions of water quality data between within main dam and around regulating reservoir during past about 5 years were investigated. The water quality of this reservoir was the raw water supply II class, but its quality was the raw water phosphorus concentration as compared with past 5 years is increasing to be about two times. When the algae bloom occurred, dominant algae species was Aulacoseira glanulata having no correlation with taste and odor.

금강하구호에서 공업용수공급을 위한 취수원선정 및 수질변화조사연구

임봉수,배병욱,김태응 大田大學校 環境問題硏究所 1996 환경문제연구소 논문집 Vol.1 No.-

This study was investigated to survey and forecast water quality for selection of intake station for industrial water supply in Kumgang estuary reservior. Variation of water quality in reservior was compared with vefore the sluice was closed and after. The best selection of intake station was in wachori, water quality was forecasted less than BOD 6mg/1 (industrial water supply I class) at 2021 year. Cholorophyll-a concentration was less than 5ug/a before the sluice was closed, but it was increased by maximum 60ug/1 suddenly after the sluice was closed. The water quality of river have been changed that of resevior. Because chloride concentration were settled less than about 60mg/1 after about two months the sluice was closed, they will do not matter in use of industrial water supply.

금강하구호에서 배수갑문 폐쇄 후 수질변화와 염소이온농도의 예측

임봉수,김태응,방미란,유갑봉 大田大學校 環境問題硏究所 1998 환경문제연구소 논문집 Vol.3 No.-

This study was carried out to forecast the chloride concentration and to investigate the water quality for industrial water supply after closing the sluice gate in Keum river estuary reservoir. Chloride concentration was dilluted by input flow, depended on outside chlorine mass than inside mass form reservoir body. The forecasting equation for chloride concentration is got Ci=3700·e ?? + 405/ ?? +2.5 without considering input chloride concentration from upstream river. The water quality in intake station for industrial water supply was satisfied for the standard for industrial water supply, but requried the physico-chemical treatment owing to maximum values of turbidity, pH, TS, Fe, Mn were exceed the standard.

중국 연변지역 布爾哈通河의 수질특성 및 개선방안

임봉수,임상호,윤성일 대전대학교 환경문제연구소 2001 환경문제연구소 논문집 Vol.5 No.-

This study was carried out to suggest the measures and to understand the characteristics of water quality in Buerhatong river within yanbian area, China. Suspended solids appeared high in rainfall season, but BOD and COD appeared lower than suspended solids. The yearly average water quality of all location in this river was less than BOD 2mg/L, less than COD 5mg/L, and ammonia nitrogen was over than 1mg/L in 1997, and was suitable to the class Ⅲ of environmental standard for the surface water. Because of domestic sewage and nightsoil exhausted at Yanji city without treatment system inflowed in this river Synthetical pollution index was calculated for the assessment of water quality, had a tendency to increase near to the downstream. The highest pollution allocation rate is 44% as suspended solids. To reform the deteroriorated river, the sewage wastewater treatment plants will be constructed at Myoungwoal Jin and Yanji city by 2010, respectively. Then COD discharge loading produced in this watershed will be decreased by about 43% of total loading.

영양소 주입에 의한 당면폐수처리의 성능평가

최봉철,정구회,임봉수 大田大學校 産業技術硏究所 2003 산업기술연구소 論文集 Vol.14 No.1

This study was performed to evauate for the noodles wastewater with high viscosity and low nutrient (Nitrogen, and Phosphorus). To add nutrient to grow activated sludge highly, about. 2 kg/day fertilizer that contains nitrogen was fed to the influent. Both the status of the aeration tank and the treatment performance were observed. Before feeding nutrient, the MLSS concentration in aeration tank was about 1,400 ㎎/L, and Spharotilous, Thiothrix. Prordon etc. were detected, while the BOD, COD and SS removal efficiency were so low as 78%, 77% and 56%, respectively. After feeding nutrient the MLSS concentration in aeration tank was increased to about 2,700 ㎎/L, and Epistylis. Monostyla, Voticella etc. were observed to be prolific. Meanwhile average 98% of BOD, 94% of COD, 71% of SS were removed, the microorganism can be activated to improve the noodles wastewater treatment performance. It is recommend to set up thickener and dewatering facilities to treat wasted activated sludge.

마을하수처리시설의 처리특성과 효율

이창균,임봉수 대한상하수도학회 2002 상하수도학회지 Vol.16 No.4

The purpose of this study is to analyze the current status of small-decentralized sewage treatment facilities in Chung-nam province, investigate the maintenance problems and removal efficiency of the facilities. As the analytical results on affective factors to water quality concentration, the BOD removal efficiency was 90% when the volumetric loading of aeration tank has been 0.6-0.7kgBOD/㎥·d and the nitrogen removal efficiency was about 30% at 0.5kgN/㎥·d. Therefore it is required to establish nitrogen removal process to prevent serious eutroiphication of small river. The average concentration of effluent for 12 facilities was 11.6mg/l BOD, 11.5mg/l COD, 7.7mg/l SS, 23.968mg/l T-N and 4.721mg/l T-P. Also, the removal efficiency of pollutant in order was 81.6% BOD, 72.9% COD, 77.7% SS, 33.5% T-N and 31.3% T-P. The quality of all effluent was less than discharge quality standard. But the removal efficiency of N, P was very low. Seasonal effluent water quality of each process was constant except High-efficient Sewage Treatment Package. BOD and SS concentration in Contact Oxidation process changed widely and another items such as COD, T-N and T-P was similar to all processes on hourly variation measurement. The problems of facilities were responsible management evasion of the subjects, lack of awareness by the residents to the facility, civil appeals such as electricity tax and noise and so on. So it is suggested that operator has to analyze the water quality of facilities periodically and it is necessary to support systematical, administrative measures and technical complement for responsible management.

순환식 회전원판법에 의한 하수의 생분해 성능 평가

정원문,임봉수,김태응 大田大學校 環境問題硏究所 1999 환경문제연구소 논문집 Vol.4 No.-

This study was accomplished to estimate the biodegradability of sewage using RBC(Rotating Biological contactors) and to get a basic data for design parameters. RBC systems were applied to laboratory scale reactors with varying HRT feeding sewage as of about BOD 70mg/l, 80mg/l and 120mg/respectively. According to the continuous operation, it showed that RBC w/recycling was similar to RBC w/o recycling in poganic removal efficiency or TP removal effiency, but neither system effectively removed TN. To get the above 90% of BOD removal efficiency, both were recommended to design as BOD organic loading rate was less than about 4.5 to 6.0 g/㎡/d, hydraulic loading was less than about 80ℓ/㎡/d. It showed that RBC w/ recycling was inferior to RBC w/o recycling in TN removal effiency. At the 5.0g/㎡/d, TN removal efficiency RBC of w/ recycling and RBC w/o recycling was about 50%, 70%, respectively. SNR(Specific Nitrification Rate) was tending to increase as shorter HRT. SNR of RBC w/ recycling and RBC w/o recycling was 0.4mgNH₄-N/gMv/hr. 0.7 to 1.0mgNH₄-N/gMv/hr. respectively.