생물막 탈질공정을 이용한 고농도 유기성폐수처리

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.

내부탄소원을 이용한 돈사폐수의 탈질화

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.

호기성 고정생물막 반응조에서 인의 제거

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.

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.

팔당호 부영양화 방지를 위한 상류지역 점오염원중 인 기여도 분석

우영국 ( Young Gug Woo ),박은영 ( Eun Young Park ),전경철 ( Kyung Chul Jeon ),양희정 ( Hee Jeong Yang ),임재명 ( Jay Myung Rim ) 한국물환경학회 2010 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2010 No.-

대구시 지역 토양의 중금속 함량에 관한 연구

우영국(Young-Gug Woo) 한국환경관리학회 2002 環境管理學會誌 Vol.8 No.1

팔당호 상류수계에 위치한 공공 하수종말처리시설의 총인 배출 최적관리

우영국 ( Young Gug Woo ),박은영 ( Eun Young Park ),전양근 ( Yang Kun Jeon ),정명숙 ( Myung Suk Jeong ),임재명 ( Jay Myung Rim ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.2

The purpose of the study is to optimally manage sewage treatment plant with analysis of phosphorus contribution and improvement of water quality contributing rate in the effect of inflowing point of effluent and Pal-Dang lake after reducing T-P discharge from large scale public sewage treatment plant at upstream of Pal-Dang lake. Also, this study, for enforcement of T-P in effluent, plans optimal management of effluent T-P through examining propriety of environmental, technological, and economical aspect such as water quality standard of domestic and foreign T-P and related policy. In regarding optimal management of T-P discharged from public sewage treatment plant located in upstream of Pal-Dang lake, the study drew following conclusions. With the optimal management of public sewage treatment plant, it showed that a pollution level became higher in the order of Sumgang E in South-Han river, C in Dalcheon, B1·B2, A in North-Han river, and J in Kyungancheon, and it is required reduction of T-P first. The highest value in analysis of benefit-costs from sewage treatment plant in the selected research area was Kyungan B, and the others are with the order of Jojong A, Bokha A, Kyungan A, and Yanghwa A. With result of this study, all 14 areas are required more enforced phosphorus treatment. The study resulted that the most top priority areas were Hangang F, Sumgang B, and Gyungan A, top priority areas were Bokha A, Dalcheon B, and Cheongmi A, priority areas were Hangang E, Heukcheon A, Gyungan B, and Jojong A, and potential areas were Sumgang A, Yanghwa A, Dalcheon A, and Hangang D. It seems to be appropriate to apply 0.2 mg/L of T-P treatment for water supply source reservation, 0.5 mg/L for the other areas by locally, and 0.2~0.5 mg/L for biological nitrogen·phosphorus treatment method and 0.5~1 mg/L for Conventional Activated Sludge by technologically. Also, it may be appropriate to apply 0.2 mg/L for the most top priority area(I), 0.3 mg/L for the top priority area(II), 0.4 mg/L for priority area(III), and 0.5 mg/L for potential area(IV) by the separation of priority area.

거제도 백로와 서식지 환경표본에서 분리한 Salmonella의 Serotypes 분포 조사 및 Molecular Typing

우용구,박진영,이영주,권용국,모인필 한국수의공중보건학회 2001 예방수의학회지 Vol.25 No.3

Since 1997, three large scale unknown death had consecutively appeared in the wild heron flocks in Geo-Je island until 1999. Until now, there has been only a little information on the Salmonella spp. originated from the wild animals in our peninsular. Hence, the objective of this study was to obtain the epidemiological characteristics related to Salmonella strains cultured from wild herons and environmental samples in Geo-Je island using the serotyping, antibiograms, plasmid profiles, and random amplified polymorphic of DNA (RAPD) profiles. A total of fifty-five Salmonella strains were isolated from liver and cecal contents of wild herons captured in Geo-Je island on August in 2000. Among the wild heron species tested, Ardea Cinerea jouyi (Clark) was shown the most high Salmonella isolation frequency (38.5%) and Egretta alba modesta (Gray) was followed as 15.4% (2/13), but any Salmonella could not isolate from the other species. Among the five serotypes identified, S. typhimurium (70.3%) was the most predominant serotype in the wild heron flocks and S. hadar (21.3%), S. wippra (4.3%), S. california (2.2%) and S. chincol (2.2%) were followed in order. S. wippra and S. chincol were reported as the first time among the domestic avian Salmonella serotypes since 1994. Three serotypes including S. typhimurium, S. hadar and S. chincol were commonly cultured from the internal organs of herons, whereas S. wippra was cultured only from the environmental sample, especially in the earth sample. In antimicrobial drug susceptibility test, all Salmonella strains from internal organs of heron were susceptible to all drugs tested, whereas strains from environmental samples were shown the resistance to carbenicillin, doxycyclin, tetracycline and oxytetracycline, respectively. Antibiogram pattern alone could discriminate into two types depending on their isolated origins. The serotype specific plasmid (60 MDa) was found in most of ST isolates (65%) and all strains had also the invA gene (284 bp) by PCR. These two genetic materials (SSP and invA gene) were known as a kind of virulence factors of pathogenic ST strains. The genetic relatedness was also compared between the ST strains from different sources using the random amplified polymorphism of DNA (RAPD) method. As a results, the present method was found as a rapid, efficient and useful tools to differentiate the same Salmonella serotype without specific difficulties in manipulation.

모바일하버 운영을 위한 국내 무역항 후보지 분석

이중우(Joong-Woo Lee),국승기(Seung-gi Gug),정대득(Dae-Deug Jung),양상용(Sang-Young Yang),김태형(Tae-hyung Kim) 한국항해항만학회 2010 한국항해항만학회지 Vol.34 No.10

본 연구에서 하역크레인을 장착하여 모선과 연안항만간 컨테이너를 단거리 운송하는 것으로 새로운 개념의 해상운송시스템인 모바일하버를 소개하였다. 초대형 컨테이너선박이 직접 연안항만에 접이안하는 대신에 모바일하버가 해안에서 일정거리 이격되어 모선이 정박하기에 수심여건이 양호한 작업장까지만 이동한다. 따라서, 모바일하버의 적용을 위한 국내 무역항의 해안환경, 기술적 조건 및 한계에 대한 조사는 필연적 과정이다. 모바일하버의 접근성을 파악하기 위하여 환경조건, 화물하역처리능력, 해상교통량 및 교통류를 해상교통시뮬레이션 및 가상항로표지시스템의 툴을 사용하여 분석하였다. 수집한 정보의 분석과 적용서의 평가를 통해 최적수준의 남해안 및 동해안 무역항에 대한 모바일하버 정박장은 (1) 기상 및 해상자연환경조건면에서 마산항, 울산항, 부산신항의 순으로, (2) 해상교통 및 수역시설여건의 조건에서 는 목포, 부산신항, 동해묵호항의 순으로, (3) 화물처리의 현장능력 및 지역무역항의 운영실태분석으로는 부산권, 여수광양권, 목포권으로 나타났다. 본 연구를 통해 최적의 항만 및 작업장 선정을 위한 기준을 제시하였으며, 모바일하버가 현장에 적용되기 위해서는 초대형선박과 모바일하버의 접안 및 화물작업이 이루어지는 해역에서 해상교통안전을 확보하기 위한 선박자동식별시스템 등 가상항행보조시설이 도입되어야 할 것으로 본다. In this study, a new concept of ocean transport system, called the mobile harbor serving for a short distance transport of containers with cargo handling cranes between mother containerships and coastal ports, is introduced. Instead of direct berthing a very large containership at the coastal port, Mobile Harbor is moving to the offshore mooring basin with enough water depth condition. Therefore, investigation of the coastal environment, technical condition and limitation of the domestic trade ports for the application of Mobile Harbor, is essential process. To figure out the accessibility of mobile harbor, the environmental conditions, the cargo handling capacity and marine traffic volume and flow pattern has been analyzed with the tools for marine traffic simulation and virtual navigation aids system. The most proper Mobile Harbor mooring areas among trade ports of the south and east coast are selected by analyzing the obtained information and evaluating its application: (1) Under natural environmental conditions such as air and sea weather, three candidate areas are selected such as Masan port, Ulsan port, and Busan(New port) port. (2) Under marine traffic and appropriateness of water facilities, three candidate areas are selected as Mokpo port, Busan(New port) port, and Donghae & Mookho port (3) For a region-based analysis considering handling capacity and the local managed trade ports in vicinity, three candidate areas are selected as Busan region, Yosu & KwangYang region, and Mokpo region. Through this study, the basic guideline for selection of optimum trade port and offshore mooring basin for mothership and Mobile Harbor is recommended. In order to apply the Mobile Harbor to the real water, navigaton aids as the virtual route identification with AIS must be introduced for maritime safety in the vicinity of Mobile Harbor area which berthing and cargo handling is being conducted.

국내 포유동물에 적합한 생태통로의 유형과 규격

최태영 ( Tae Young Choi ),양병국 ( Byeong Gug Yang ),우동걸 ( Dong Geol Woo ) 한국환경영향평가학회 2012 환경영향평가 Vol.21 No.1

In this study, suitable types and measures of Wildlife Crossing Structures (WCS) for mammals of Korea were analyzed to suggest basic information for design guidelines of WCS. In order to find the types and measures, we conducted field surveys on 79 WCS and literature reviews on 159 WCS. The results of our study were as follows; Small-medium sized carnivores usually use all measures of wildlife underpass, meanwhile large sized herbivores as water deer need lager measures than 0.7 Openness Index(OI). Furthermore, we found that wildlife overpasses were usually used at the measure of 6.8 m width by every mammal. Therefore, we concluded that the proper measures should be lager than 0.7 OI for underpass and 7 m width for overpass.