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김은호(Eun Ho Kim),성낙창(Nak Chang Sung),박출재(Chool Jae Park) 한국환경보건학회 1998 한국환경보건학회지 Vol.24 No.4
The purposes of this study examine characteristics of color removal using slag in dyeing wastewater, compare activated carbon with its efficiency, and inquire into recycling possibility as a substitute. Considering that slag contained in SiO₂, Fe₂O₃ and Al₂O₃ compositions, and coagulants were mainly used aluminate and f errate in color removal. It could be known that color removal of slag was increased to pH 4, but was hardly changed with advancing to alkaline. Color intended to be high removed with increasing of agitation speed, but to be almost slow after 150 rpm. As a result on the experiment of Freundlich adsorption isotherms, adsorption intensity(1/n) appeared to be slag>activated carbon and adsorption capacity(k) came out activated carbon>slag.
설계인자 변화에 따른 소형 전기집진장치의 최적효율 예측
서정민 ( Jeong Min Suh ),이병인 ( Pyong In Yi ),정문섭 ( Moon Sub Jung ),박정호 ( Jeong Ho Park ),임우택 ( Woo Taik Lim ),박출재 ( Chool Jae Park ),최금찬 ( Kum Chan Choi ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.9
The result of a small electrostatic precipitator which is in order to decrease indoor air pollution for optimal efficiency was shown as follows. Although the closer distance between the discharge electrode and dust collecting electrode shows the better throughput efficiency by forming strong electrostatic Field, it does not have profound impact in case of optimal dust collecting area. G.P(gas passage) which is the distance from dust collecting electrode to dust collecting electrode is a crucial factor to decide dust collecting efficiency. The narrower distance of G.P shows the better throughput efficiency whereas it decreases when the distance is too narrow since sparks ensue by increasing the capacity of electrostatic charging system 5 mm regards as optimal efficiency in this experiment. Although the higher voltage shows the higher dust collecting efficiency overall, the experiment was not able to keep performing since the sparks which decrease dust collecting efficiency ensue over 40 kV. The efficient and safe voltage state is considered 3.6 kV in this experiment. The most crucial factor for dust collecting efficiency of an electrostatic precipitator which is in order to decrease indoor air pollution is applied voltage. In addition, optimal raw gas flow rate(2.4 m/sec) is more important factor than the excessive increase of dust collecting area.
매립지 조기안정화에 따른 침출수 및 매립가스 분포 특성 연구
박진식,안철우,박출재,김수생 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1
This study was conducted to establish primary data for the stabilization assessment of expired landfill site with analysis of leachate and landfill gas Based on the results of the experiments, BOD and COD concentration of leachate became low after earlier stabilization facilities and COD/COD ratio of leachate was investigated average 0.18 in 1998. Variation of CH₄concentration of landfill gas in spring and summer were higher than autumn and winter and CH₄concentration was investigated average 14.2% in Dec. 1998.
朴出在,金秀生 동아대학교 환경문제연구소 1983 硏究報告 Vol.7 No.1
In the paper, the author examined the economics on Nightsoil Treatment Paln's of domestic environmental facilities which have been conrtructed in this country. Nightsoil Treatment Plants are classified to the type of Urban and Rural, and investigated mainly the Construction, Operating and Maintenance, and Electricity Cost of Aerobic and Anaerobic systems. Ultimately, the author intended to make the study a guide for planning and operating the environmental facilities.
최금찬,박출재,박정호,임경택 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.1
Acid Rain has been investigated in Pusan Area. The range of pH indicated at 1st point to 4.05-7.2, 2nd point to 4.87-7.1, 3rd point 5.0-7.0 individually. Average pH value was decreased during small rainfall, the rainfall amount was directly related to pH in every points. Frequency ratio of pH below 5.6 in each point were resulted to 75% at 1st point, 73% at 2nd point, 42% 3rd point.
充塡塔의 氣液逆流에 의한 水力學的 擧動의 數學的 解析硏究
金載洪,朴出在,金彰昊 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1
This study was carried out to interpret mathematically hydraulic behaviour in packing tower which packed 50 mm plastic Hiflow ring within d. 0.288 × H. 1.37 m. The results from experiment are as follows ; 1) In view of energy saving, the recent packing, 50 mm plastic Hiflow-ring was superior to conventional packings because of low pressure drop in high loads. 2) As relative error between mathematically caculated value and investigated value was less than 6% in the loading and flooding point, it found that their results were proved to adequancy. 3) Comparing calculated with experimented pressure drop in conditions of dry and wetted packing, relative errors are 3.96 and 5.6%, respectively. In order to evalute the operating character of packings, the type. size and material of packings must be estimated in various system and loads. This study is able to calculation, first all, the specific constants of each packing must be calculated. The mathematical interpretation method of this study revealed superior to existing methods because of low error in loading and flooding point.
安鍾洙,朴出在,金秀生 동아대학교 환경문제연구소 1988 硏究報告 Vol.11 No.1
Dye waste water was treated by 2 step aeration method and the efficiency relative to detention time. MLSS and sludge loading was analyzed and following conclusion was obtained. 1. Detention time should be maintained at least more than 30 hours to treat and stabilize waste water in the 1 step and 2 step with BOD. COD being less than 100㎎/ℓ. At 1 step BOD was removed more than 20%. COD was removed more than 40%, at 2 step it was turned out to remove BOD more than 95%, COD more than 75%. 2. With moderate MLSS being maintained at 1,000-1,300 ㎎/ℓ, BOD was removed more than 20%, COD more than 40%, and at 2 step with MLSS being about 4,000㎎/ℓ. BOD was removed more than 90%, and COD more than 80%. 3) As sludge loading varies, at 1 step, without any significant change. It was shown that BOD was removed at stabilized efficiency of 10-40% and at 2 step. BOD was removed more than 90% at the loading of 0.3㎏ BOD/㎏. MLSS. d. COD was removed between 50-70% at the loading of less than 0.07㎏ COD/㎏. MLSS. d.
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.