음식물 쓰레기의 퇴비화에 관한 연구

전기일,김형갑,정병윤 진주산업대학교 농업기술연구소 1999 農業技術硏究所報 Vol.12 No.-

The purpose of this study were the food wastes composting, this study was carried out in the batch reactor with sawdust as bulking agent. The sample of food wastes for this study were collected fron the restaurant in our University. We obtained the results as follows : 1) During composting process, the highest temperature in the batch reactor was 55.8℃ after 5 days of experiment. 2) During composting process CO_2 and NH_3 were generated, after 6 days of experiment their concentrations were 20% and 640ppm respectively. 3) The volume of sample was reduced to one third in experimental period.

소형 퇴비화 장치 개발

전기일 진주산업대학교 1998 論文集 Vol.37 No.-

The compostable foodwaste of 1㎏ a day were added in the composter without applying additives. Thereafter, composting was proceeded successively in the composter, which had the mass reduction and physico-chemical of the produced compost were analyzed. The results are as follows; During the composting process, Water content maintained in the range of 51.04∼53.45%. Hemicellulose and Lignin contents did not show any tendency, but Cellulose content decreased. During the composting process, NH_3-N and NO_2-N were not detected due to nitrification. The contents of inorganic compounds were not accumulated during the composting process. They were in the range of 1.32∼1.71% P_2O_5, 1.29∼1.48% CaO, 0.41∼0.49% MgO, 0.38∼0.74% K_2O. For 20 days, decomposition rate was 67.5% in wet base and 48% in dry base. Concentration of heavy metals(Cu, Cr, Cd, Pb, Zn, Hg, As) was less than the limiting value of the compost. Maturity of the produced compost was 3 grade with maximum reaching temperautre of 46∼48℃.

병원폐기물의 처리현황과 대책에 관한 연구

전기일,김형갑 진주산업대학교 환경문제연구소 1998 環境硏究論文集 Vol.2 No.-

국민들의 의료기관이용이 증가함에 따라 의료활동에 수반되어 발생하는 폐기물 발생량이 증가하고 있으며 이러한 병원폐기물의 관리는 건강과 환경의 위험을 최소화하는 방법에 의하여 폐기물의 취급, 저장, 운송, 처리의 체계적 접근이 필요하다. 그래서 본 논문에서는 우리나라 병원폐기물의 관리현황과 실태, 적출물 관리 중심으로 문제점을 파악하여 그 개선방안을 제시하였다.

황화수소취기의 생물학적 탈취

전기일,박출재,이태호 진주산업대학교 1992 論文集 Vol.30 No.-

본 실험은 黃化水素 취기를 생물학적 방법으로 제거하기 위하여 함수율, 용도, 영양염류 등을 변화시키면서 생물학적 최적조건을 발견한 다음 황화수소 입구농도를 100, 200, 300ppm, 표면적 부하를 40, 60, 80㎥/㎡·hr로 변화시켜 결과 다음과 같은 결론을 얻었다. 낙엽 Compost에 의한 생물학적 탈취는 가능하였으며, 낙엽 Compost를 이용하여 황화수소 취기의 탈취를 위한 생물학적 최적온도를 온도 20~30℃, 함수율 62±3%이었다. 표면적부하 40㎥/㎡·hr, 충진층 높이 50㎝에서 황화수소의 농도별 제거율은 100ppm에서 99.9%이상, 200ppm에서 99.2%, 300ppm에서는 84%였으며, 농도 200ppm, 충진층높이 90㎝에서 표면적 부하를 40, 60, 80㎥/㎡·hr로 변화시켰을 때 제거율은 각각 99.9%이상, 99.9%, 85%이었다. The stydy was performed to remove hydrogen sulfide odor gas by the bio-filter. The optimum conditions of water contents, temp., and inorgarnic matters for this method was determined with a fixed concentration of hydrogen sulfide odor gas. Under this optimum conditions, the follwing results were obtained from various concentrations of hydrogen sulfide odor gas(100, 200, 300 ppm) and surface area load(40, 60, 80 ㎥/㎡·hr). Biological deodorization by leaf compost was feasible and its optimum condition of temperature and water contents was 20~30℃ and 62土3%, respectively. The rate of deordorization of hydrogen sulfide odor gag(100, 200, 300 ppm) with he height of packing material 50㎝ and surface area load 40 ㎥/㎡·hr was great than 99%, 99.2%, and 80%. Similarly, the rate of deordorization of 200ppm of hydrogen sulfide odor gas at surface area load(40, 60, 80 ㎥/㎡·hr) with 90㎝ of the height of packing material was great than 99%, 99% and 85% respectively.

대학내 폐기물 발생량 및 특성조사에 관한 연구

전기일 진주산업대학교 1999 산업과학기술연구소보 Vol.- No.6

This investigation was carried out to study on the generation and physical composition of the solid waste in University. The experiment of the study was investigated on the nine points in University. The refuses were sorted in components such as paper, plastics etc by hand sorting. The results as follows, 1)The solid waste in University are generated 177ton/year and 0.1㎏/capital/d. 2)The average physical composition of solid waste are paper 71% among incinerator refuse and glass 35% among landfill waste, respectively.

진주시 쓰레기봉투속의 성분조사

전기일,정병윤,이춘식 진주산업대학교 2000 산업과학기술연구소보 Vol.- No.7

The purpose of this study was to investigated the physics-chemical characteristic of municipal solid waste generated in the Chinju city. It is important to know the physico-chemical characteristic of municipal solid waste. The average physical composition of municipal solid waste in APT and Detached Dwelling are food waste 68% and 55.5%, paper 13.5% and 16.5%, vinyl & plastic 13.7% and 16.5%, glass 2.73% and 1.7%, metal 2.06% and 1.03%, others 6.6% and 2.1%, respectively.

活性 슬러지에 의한 有害 廢水 處理度에 관한 硏究 : Formaldehyde 廢水 Formaldehyde Wastewater

林哉明,全基一,金守明 동아대학교 환경문제연구소 1990 硏究報告 Vol.13 No.1

The purpose of this research was to examine the possibility of biodegradation of the hazardous wastewater -formaldehyde wastewater- and to determine the engineering design parameters by the activated sludge process. The main results of this experimental study are as follows: 1) It was indicated that formaldehyde wastewater can be treated by Activated sludge, and to accmplish the COD removal efficiency 90%, the HRT was above 11 days, COD volume loaling was below 096㎏ COD/㎥·d, and F/M_(v) ratio would be expected to have below 0.45 2) Oxygen reguirment was above 0.81㎏ O₂/㎏ CODrm and Sludge production was about 0.1㎏ VSS/㎏ CODrm.

진주시 소음도 평가

박정호,전기일,조미정 진주산업대학교 1998 산업과학기술연구소보 Vol.- No.5

Sound levels were measured at road side, school and business areas in Chinju during the period of Jan, July and September. 1997. The characterization of sound level was investigated diurnal variation of sampling site as follows : (1)Sound level of road sides(AE sites) was higher E site in the daytime while K site in the nightirse. (2)The range of sound level at school area was between 51.8 dB(A) and 70.6 dB(A). And these values were higher in outside compared with that in inside. (3)Mean sound level at business area was not showed road side and normal site variations, but was higher in the daytime compared with that in daytime.

축산농가에서 목초액을 이용한 암모니아 가스의 제거 특성에 관한 연구

박정호,전기일,정창훈 한국환경과학회 2003 한국환경과학회지 Vol.12 No.12

This study was carried out to obtain the optimal ammonia removal efficiency using pyroligenous liquid for the economical and environment-friendly odor removal at a petty livestock farmhouse. The ammonia removal efficiencies were evaluated due to changing dilution rates(× 10, ×20, ×30, ×50 and ×100 times) and different spray amounts(10㎖ and 20㎖) of pyroligenous liquid. The wet scrubber device was used to remove odor in closed-type livestock farmhouse. According to dilution rate of the pyroligenous liquid, the optimum rate was 20 times and the removal efficiency increased by decreasing dilution rates. In the case of spray amounts with the optimum dilution, the amount was 20 me and the removal efficiency increased by increasing spray amount. Also, the removal efficiency by using wet deodorizing device was 83.0~97.0% with 20 times diluted liquid.

Passive Sampler를 이용한 진주시 NO_2 농도 분포

박정호,전기일,서정민 진주산업대학교 농업기술연구소 2000 農業技術硏究所報 Vol.13 No.-

In 1996, about 80 % of total emission in Chinju was emitted from mobile source, with about 26.9 % of nitrogen dioxide (NO_2) coming from mobile source. In this study, the distributions of NO_2 concentrations were investigated with Passive Sampler in Chinju. Passive Sampler can be a useful method to evaluate distribution of a detailed concentration in large area. The concentrations of NO_2 in downtown Chinju were appeared in the rage of 0.0046∼0.0285 ppm. And the concentrations of NO_2 in rural areas were appeared in the rage of 0.0018∼0.0176 ppm at the road side and 0.0014∼0.0064 ppm at the green zone. The mean concentration of NO_2 was appeared to be about 0.0043(±0.0020) ppm in Chinju. The NO_2 concentrations at the downtown site were about 21∼98 times higher than in rural areas.