관리정책 : 경남지역 생활폐기물 발생특성에 관한 연구

전기일,배성근,김종오,장성호,권영택,전성균 한국폐기물자원순환학회(구 한국폐기물학회) 2003 한국폐기물자원순환학회 추계학술발표논문집 Vol.2003 No.-

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.

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℃.

전해에 의한 산화·환원에 관한 연구

전기일,이춘식,박현건,김형갑,서주수 진주산업대학교 1997 산업과학기술연구소보 Vol.- No.4

This study was carried out electrolysis process according to ampere density, varrent time for oxidize of ammonium and reduced of nitrate concentration. The results were summarized as follows: 1. Ammonium is disappeared in 18min, 15min, and 10min of electrolysis treated on the high ampere density of 1.0A/㎠, 1.29A/㎠ and 1.42A/㎠. 2. pH is diminished to increase of electrolysis oxidized time and ampere density, pH 5.2 come out nitrite and nitrate production in ampere density of 1.42A/㎠ and 10min of electrolysis time. 3. Magnesium ionization is compounded oxygen of nitrate, producted of MgO and Mg(OH)_2 by the nitrate is reduced of nitrite.

오존-차아염소산나트륨과 充塡塔에 의한 냄새成分의 除去

전기일,박현건,김미숙 진주산업대학교 산업과학기술연구소 1994 산업과학기술연구소보 Vol.- No.1

오존-차아염소산나트륨 酸化方式으로 異尿處理場 냄새의 大部分을 차지하고 있는 암모니아와 황화수소를 5/8inch Pall Rinf으로 充塡한 吸收塔을 이용하여 除去하는 實驗을 한 結果는 다음과 같다. 1. 本 實驗에 使用하기 위해 제작된 充塡搭의 壓力損實을 測定해 본 結果 最大 表面積負荷에서 43mmAq/m로 充塡搭의 壓力損失 허용범위 50mmAq/m이내인 것을 확인할 수 있었다. 2. 차아염소산나트륨의 유효염소농도 100ppm 이상에 오존을 17ppm(5l/min)로 注入시킬 때는 H_S 98%, NH_396%의 除去效率을 보인반면, 오존을 添加하지 않고 차아염소산나트륨 單獨으로 酸化할 때의 除去準은 H_2S 92.5%. NH_3 90%로 나타났다. 3. 차아염소산나트륨의 유효염소농도 100ppm 이상에 오존을 6, 11, 17ppm(5l/min)로 注入시킬 때는 H_2S 94.2, 96.3, 97.5%, NH_3 90.7, 94.0. 96.0%의 除去效率을 보인반면, 차아염소산나트륨을 添加하지 않고 오존單獨으로 酸化할 때의 除去效率은 H_2S 60.0, 57.5, 51.0% NH_3 52.8. 53,9, 55.0%로 나타났다. This study was performed to remove hydrogen sulfide and amonia odor gas by packed tower with 5/8 inch pall ring. The removal efficiency of odor gas with various effective chlorine concentration oxygen injection ratio were shown by this experiment. The experimental results as followed. 1. In the measuring of pressure drop of packed tower, it is found that pressure drop is 43mmAq/m at peak surface load. The data is in acceptable range of 50mmAq/m. 2. Removal efficiency of H_2S, NH_3 is 92. 5, 90.0%, when these are treated with NaClO. But removal efficiency of H_2S, NH_3 is 98%, 96%, when added 0_3 17ppm(5 l/min.) to NaClO(effective chlorine concetration of 120ppm). 3. Removal efficiency is very low with H_2S being 60.0, 57.5, 51.0% with NH_3 being 52.8, 53.9. 55.0% when these are treated with 0_3 of 6, 11, 17ppm, but removal efficiency is satisfactory with H_2S being 94.2, 96.3, 97.5% and NH_3 being 90.7, 94.0, 96.0% when NaClO(effective chlorine cencentraton above of 100ppm) is added.

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.

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.

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.

음식물쓰레기 사료화에 대한 고찰

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

본 연구에서는 생활쓰레기 발생량중 가장 비중을 많이 차지하는 음식물쓰레기의 처리방안을 찾기위하여 음식물쓰레기 발생현황과 문제점 및 처리실태를 조사하고 음식물쓰레기의 사료화의 조건과 처리시설 및 발전방향에 대하여 고찰하였다.

有機性슬러지의 油溫脫水處理

전기일,박현건,석철원 진주산업대학교 산업과학기술연구소 1994 산업과학기술연구소보 Vol.- No.1

본 硏究에서는 油溫脫水法을 利用하여 食品廢水 슬러지를 飼料化할 경우에 필요한 基礎資料를 얻고자 60mmHg減壓下에서 각각 다른 油溫(90℃, 120℃)을 유지하면서 油溫脫水시켰을 때 각 油溫脫水시간에 따른 油溫脫水前後의 化學的 變化등을 분석한 결과는 다음과 같다. 1. 60mmHg減壓下에서 食品發水 슬러지를 油溫脫水했을 때, 각 油溫脫求 時間(20, 40, 60분)에 대한 含水率은, 油溫 90℃일때는 14.7%, 10.5%, 8.6%이었고, 油溫120℃일 때는 12.0%, 9.3%, 7.8%이었다. 20分問 油溫脫水時 水分 除去律이 각각 81.9%, 85%로 나타나 油溫脫氷 初期에 急速히 脫水됨을 알 수 있었다. 2. 食品發水 슬러지의 祖雲白質 含量은 油溫 90℃에서 40分間 油溫脫水 했을 때가 28.8%로 가장 높았고, 雲白質 飼料의 條件을 滿足하였다. 3. 食品發水 슬러지의 粗脂肪 含量은 油溫脫水 時間이 길어질수록 증가하는 경향을 보였고, 油溫이 90℃일 때 보다 120℃에서 다소 높은 粗脂昉 含量을 나타냈다. 4. 食用油의 酸價와 過酸化物價는 增加하는 경향을 보였지만, 油湯脫水法을 이용하므로써 貪用油의 酸敗를 줄일 수 있었다. This study has been carried out to obtain the basic data when food wastewater sludge is utilized for feeding by dehydration in frying oils for 20min, 40min, 160min, at 700mmHg(90, 120℃). Experimental results were summarized as follows : 1 . The water contents of food wastewater sludge was rapidly decreased at the early stage. And the minimum value of water contents was 7.8%. 2. The maximum crude protein contents of fried food wastewater sludge was 28.8%. The value was satisfied for feed. 3. The crude fat contents of fried food wastewater sludge tended to increase more frying time, and the fried sludge at 120℃ was slightly higher than 90℃. 4. The acid and peroxide value of frying oils tended to increase more frying time, but dehydration in frying oils decreased acidification of frying oils.