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한동준,임재명,우영국 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-
While the enhanced biological phosphorus removal(EBPR), in anaerobic/aerobic condition, was known to remove phosphorus by means of metabolism of poly-Pmicroorganisms, the phosphorus removed could be released in the form of ortho-P in the aerobic fixed biofilm reactor. This study was initiated to investigate the cause of ortho-P release in the aerobi c fixed biofilm reactor. The resutls indicated that the phosporus release was caused by autooxidation. The synthesis and release of phosphrous were related to the ORP and the boundary value for the phase change was about 170mV. In the synthesis phase, the phosphorus removal rate per COD removed was 0.023mgP?/mgCOD?. The phosprous contents of the microorganism were 4.3~6.0% on a dry weight basis.
한동준,임재명,우영국 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-
This reasearch aims to investigate the effects of an internal carbon source in the dentification of piggery wastewater. In this study, the raw wastewater and the effluent from each of anoxic basin and anaerobic basin were used as the internal carbon sources. The experiments were carried out in batch system and the results are as follows; i)Denitrification rastes were the highest in the raw wastewater asnd the lowest in the anaerobic effluent. ii)The piggery wastewater contained about 60 percent of the readily biodegradable organic(RDCOD), which led to a conclusion that the raw wastewater could be used as the internal carbon source for denitrification. For the efficient denitrificatuon, pre-denitrification process was found profitable. iii) In denitrification, alkalinity production rates were in the range of 3.4 to 3.6 mgCaCO?/mg NO?-N. iv) The denitritation of piggery wastewaster came out to be possible, and the rate of organic carbon consumption decreased about 10 percent.
팔당호 상류수계에 위치한 환경기초시설의 인 기여도 분석
우영국 ( Young Gug Woo ),박은영 ( Eun Young Park ),전양근 ( Yang Kun Jeon ),양희정 ( Hee Jeong Yang ),임재명 ( Jay Myung Rim ) 한국물환경학회 2010 한국물환경학회지 Vol.26 No.6
The phosphorus contribution rate on water quality of North and South-Han River, and Gyungan-cheon by effluents from environmental fundamental facilities located in upstream basin of Paldang Lake were analyzed. QUALKO2 model was selected for the analysis of contrubution rate, and was constructed considering the location of the main point sources and all facilities in study area. The pollutant loading rates and arrival rates for each unit-watershed in study area were calculated for model operation. For the calibration and verification of model, 2006 water quality dataset from Ministry of Environment and the effluent loadings of the environmental fundamental facilities were used. Reliability Index (RI) method was used to estimate the validity of the results of calibration and verification. The phosphorous contribution rate(%) for each environmental fundamental facility were analyzed by excepting the effluent loading of the facility. The contribution rate was analyzed for each facility, facility groups separated by each main river and each unit-watershed. The main results of analysis for each facility are as follows; (i) the phosphorous contribution of B1 facility is 50%, which is the highest phosphorous contribution rate among those of nine facilities in the North-Han River Basin; (ii) the highest phosphorous contribution is 55.6% from J facility among eight facilities in the Gyungan Stream Basin; (iii) 40% from E treatment facility is the highest among those of twenty eight facilities in the South-Han River Basin.
禹永國,權純映,劉成桓 관동대학교 1997 關大論文集 Vol.25 No.2
The combined process for denitrification was used to treat seafood processing wasteweters containing high Nitrogen compounds. The reactors were maden by prexiglass and consisted of the two anoxic and oxic reator for nitrification and denitrification. Wastewater for experiment was ranged in 4000-5000㎎/1 of TCOD, 2500-3300㎎/1 of TBOD, 500-600㎎/1 of TKN, 430-500㎎/1 of NH₃-N and 14-28℃ of temperature. The efficiency was shown in treating nitrogen compounds during experiment. About 90% of NOx was removed at anoxic oxic phase. At the state of 0.3-0.6 ㎏ NOx/m³.d in Nitrogen volumetric loading rate, the efficiency was 97%. Most of Nitrogen removal was treated at the post-denirification.