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임봉수,박희동,최유정,오수현 大田大學校 産業技術硏究所 2002 산업기술연구소 論文集 Vol.13 No.1
The water quality of around downstream in Gab stream is about twice higher than that of upstream as average BOD 7.9 mg/L. The characteristics of sediments in this area were surveyed about 130 ㎎/g as COD, about 12∼25% as ratio of VS/TS, 16 ㎎/g as TN and 10 mg/g as TP. The concentrations of Pb, Cu, Cd, Cr, Zn and As of sediments were 3.6㎎/㎏, 5.7㎎/㎏, 0.03㎎/㎏, 1.8㎎/㎏, 22.9㎎/㎏, and 0.3㎎/㎏, respectively. For these sediments were not accumulated, the water quality was not deteriorated from sediments, and to make the comfortable and hydrophilic environment condition in this area, Tablibdolbo(irrigation pond) should be removed.
감염성 폐기물이 주입된 병원폐수 처리시설의 공정개선에 따른 처리효율 평가
임봉수,김도영,권충진,길태형 대전대학교 환경문제연구소 2008 환경문제연구소 논문집 Vol.12 No.-
The average BOD concentration was found to be about 269mg/L before a process innovation, but after the innovation, it became 30mg/L, which satisfied the effluent standard of 120mg/L. The removal effluent standard of 120mg/L. The removal efficiency was about 60~80%, and the concentration of the treated water was found th be low. after the process innovation, the average COD concentration was 29mg/L, and the CODmn removal efficiency became low to the level of about 65~76%, which was found lower than the effluent standard of 130mg/L. After the process innovation the SS average concentration of the treated water was 13mg/L, which was lower than that before the innovation (32mg/L). By the activated sludge process innovation, the SS removal efficiency was improved to be 30~70%. The average concentration of total coliform before the process innovation was 6100 count/mL because an Activated sludge process only occasionally pass over the allowed standard(The average number of the total coliform of Activated sludge process treated water was about 8100 count/mL), UV disinfection process was introduced. after the introduction, the average number of the total coliform was 1800 count/mL, which satisfied the allowed effluent standard of 3000 count/mL.
간헐포기를 결합한 MLE 공정과 A2/O 공정의 영양소제거 특성 비교
임봉수,어성욱,조남운 대한상하수도학회 2001 상하수도학회지 Vol.15 No.4
This study was conducted to compare the nutrient removal with the ratio of anoxic and aerobic time by partitioning aerobic tank in MLE and A2/O process. The maximum removal efficiency rate of total nitrogen was about 53% for MLE, about 64% for A2/O, respectively. The removal efficiency rates of total nitrogen in both processes were higher than the existing processes without intermittent aeration. Denitrification rates were about 81% for MLE, about 44% in anaerobic tank, and about 50% in anoxic tank for A2/O. MODE 3(anoxic/oxic time: 10min/50min) was the highest nitrification rate, the removal efficiency rate of NH^+₄-N in this case was 91% for MLE, 98% for A2/O, respectively. These removal efficiency rates were nearly alike according to the reduction of aeration time, but oxic/anoxic ratio over 2 was required. The average removal efficiency rate of total nitrogen was from 48% to 60% for MLE, from 54% to 71% for A2/O, respectively.
주거지역내 쓰레기 수거 자동집하시스템(크린넷) 시설의 악취 민원 해결방안
임봉수,주연연,마심초 한국폐기물자원순환학회 2015 한국폐기물자원순환학회 학술대회 Vol.2015 No.05
정부에서는 분리수거에 의한 폐기물 감량화를 유도하기 위하여 1995년부터 전국적으로 종량제를 실시하고 있으나, 수거 및 운반단계에서 발생되는 문제(폐기물 방치에 따른 악취 및 미관저해 등 환경위생적인 측면, 수거차량 이동에 따른 교통안전 등의 문제)를 크게 개선하지 못하고 있다. 이러한 문제를 해결하고자, 생활폐기물 수거운영방식으로 이미 유럽 및 일본 등에서 운영되고 있는 자동집하시스템이 도입되고 있다. 대전광역시는 서구 도안동에 신도시를 조성하면서 친환경 도시환경 조성과 쓰레기수거 경비 절감을 위해 총사업비 927억원을 투입해 자동집하시스템인 크린넷을 설치하여 운영하고 있으나, 제1집하장은 수변공원내에 주거지역과 근접하고 있어 집하장 주변에서 악취에 대한 민원이 많이 발생하고 있다. 제1집하장 주변 악취 민원해결을 위해서 기존의 악취방지시설을 보완하여 운영하고 있으나, 효과적인 대안이 수립되지 않은 실정이며, 현재 악취방지시설은 약액세정법으로 운영되고 있어 새로운 약품의 추가 주입과 기존 주입약품과의 주입량 비율을 조정함으로써 부지경계에서의 측정값은 배출허용기준 15이하는 충분히 만족하지만 큰 효과는 없어 이에 대한 민원을 해결하고자 한다. 악취는 감각공해로 사람마다 악취의 강도를 느끼는 정도가 다른 특징이 있어 민원소지가 많으므로 악취는 배출허용기준을 만족하더라도 복합악취희석배수 만큼 악취가 발생된다는 결과를 의미하므로 악취가 전혀 발생되지 않게 처리하는 방법은 기술적 한계와 더불어 과다한 소요비용이 발생될 수 있다. 따라서 악취를 현재보다 줄이기 위한 방법적용은 기술적 부분과 비용적 부분이 동시에 검토되어야 하며 다음과 같은 방안을 제시할 수 있다. 1) 기존에 설치되어 있는 악취방지시설의 운전조건 수정을 통해(일반 물세정이 아닌 약액세정을 실시, 일반 활성탄을 첨착활성탄으로 교체) 보다 높은 악취제거 효율을 기대하고, 2) 기존 방지시설 운전조건을 개선한 후에도 사업장 주변에서 악취민원이 발생한다면 최종배출가스를 하수 차집관로로 유입하여 처리하도록 하며, 3) 장기적인 방안으로 기존의 악취방지시설로 악취문제를 해결하기 어렵다면 신규 악취방지시설(촉매연소)을 설치할 수 있다.
임봉수,권정인,저소웅,이범희 대한상하수도학회 2018 상하수도학회지 Vol.32 No.6
The results of the survey on water utilization status, the wasted water factor, the awareness, and the education and promotional activities of water saving in Daejeon City are as follows: The percentage of using tap valve with a closure was 66% when showering. 74% of water was used with closing the tap valve when washing faces with no water needed, it was still considered that there existed a wasting water. The most wasting reasons of water were found to be shower, bath, and laundry in order. In the awareness of practicing tap water saving, 9.1% of respondents acted actively, 53.4% of them were trying to practice it, and more than 63% had a positive awareness. In the contents of practicing saving water, locking water when soaping while showering, non-laundry of small quantity, and using cups when brushing teeth were top priorities. About 50% of the reasons for saving water was to practice purely saving water, when saving for economic help was excluded. The level of water saving awareness was not high when considering that the ratio of usage without water saving equipment and installation, and using method was relatively high when moving in. In order to make usage of water saving equipment more common, it was deemed necessary to provide information on the purchase of water saving equipment and to promote and educate the efficiency of saving of related products. More than about 90% of the respondents responded that water saving education or promotional activities had an effect of improving water saving awareness. The most effective method of education and promotional activities was found to be 40.4% by mass media activities, and 21.7% by promotions through mobile devices.