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- 저자 : 문백수 ( Bag Sou Moon ) (검색결과 5 건)
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문백수 ( Bag Sou Moon ),김명희 ( Myeong Hee Kim ),황태문 ( Tae Mun Hwang ) 한국수처리학회 2013 한국수처리학회지 Vol.21 No.4
The capacity of the high power pulsed-UV light system was evaluated in terms of removing THMs, geosmin and heterotrophic bacteria in water. The operating conditions of the system were irradiation distance; 10cm, operation voltage; 1,720V and irradiation time; 10min. The removals of THMs, chloroform, bromodichloromethane, dibromochloromethane, bromoform and geosmin were 59.0%, 46.9%, 76.7%, 100.0%, 100.0% and 95.4% respectively. The removal of heterotrophic bacteria was 3.7log in case of irradiation distance; 20cm, operation voltage; 1,500V, and irradiation time 2min. The system was also investigated for its ability to reducing free residual chlorine. The removal efficiency could be improved by increasing the operation voltage, the operation time, number of lamp and the length of the lamp.
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이온교환수지와 무가염소독을 이용한 마을상수도 수질개선에 관한 연구
문백수 ( Bag-sou Moon ),박진영 ( Chin-young Park ),김오목 ( Ou-mok Kim ),서상원 ( Sang-won Seo ),전용성 ( Yong-seong Jun ),곽영주 ( Young-ju Kwak ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.5
This study was conducted to effectively control the nitrate-nitrogen and microorganism contamination in the small scale water supply system using the mini-module, the pilot plant and the field demonstration plant in turns. The results were as follows; The ion exchange resin was more effective than RO for removal 01 the nitrate-nitrogen. The nitrate-nitrogen removal rate of RO was constant, but the rate of Ion exchange resin was reduced according to the operation time. The nitrate-nitrogen and sulfate ion were removed up to 90% by ion-exchange resin until regeneration. Chloride ion was increased at the ion exchange resin treated water than raw water. The microorganisms were formed at the ion exchange resin, so a sterilization step is necessary in the water treatment process. The concentration of cations was not changed at the ion exchange resin treatment. Microbial growth happened at the ion-exchange resin, pre-processing filter, and the ultra filtration membrane. The heterotrophic bacteria 420 CFU formed at the ion exchange resin was not detected when sterilized by residual chlorine 0.5 mg/L generated by electrolysis without adding salt. The electricity to make the residual chlorine can be decreased by using the increased chloride ion replaced by nitrate in the ion exchange resin than chloride ion in the raw water, for example when make the residual chlorine 1 mg/L and 6 mg/L, the electricity was reduced 2.9 times, 3.9 times, respectively.
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정수처리를 위한 전기분해 적용시 잔류염소 생성에 관한 연구
문백수 ( Bag Sou Moon ),황태문 ( Tae Mun Hwang ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.1
There are increased activities in development and application of directly electrolysed water using the natural chloride content for disinfectants production. Free chlorine produced with electrolysis water can be a very useful disinfectant for the removing pathogen microorganism. The present works presents the evaluation of free chlorine generation and THMs characteristics during and after electrolysis. All electrodes were titanuim based insoluble materials and rectangular plate with an effective area of 50 ㎝×20 ㎝. Electrolysis reactor composed of the six negative electrodes and the five positive electrodes. Directly electrolysis reaction using the natural chlorine content in sand filtered water generated the free chlorine for feasible disinfectant. The residual chlorine be generated 1.0 ㎎/L in current density 3.8 A/㎠ and flow 5.0 L/min. the generated free chlorine concentration was stable. Electricity was exponentially increased with flow increment for the chlorine formation. Specific chlorine value which means the generated chlorine rate per current density was 1.60 at the flow of 15 L/min. Chlorine concentration of 1 ㎎/L was stably generated above 1.0 current density and below 30 sec retention time for chlorination concentration of 1 ㎎/L. The by-products generated by high concentration residual chlorine in the reactor such as trihalomethanes were detected in less than a water quality standards.
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문백수 ( Bag Sou Moon ),김명희 ( Myeong Hee Kim ),황태문 ( Tae Mun Hwang ) 한국수처리학회 2014 한국수처리학회지 Vol.22 No.1
This study was carried out to develop UV/Vis Spectrophotometer method for quantitation of formaldehyde in drinking water . The detection was performed at the wavelength 425 nm by using 2,4-pentanedione(acetylacetone). In the direct method, the correlation coefficient of absorbance versus concentration was 0.9999. The precision of this method showed the relative standard deviations of 0.9~5.9 %. The limit of detection(LOD) and quantitation(LOQ) was 62 ㎍/L and 190 ㎍/L, respectively. The recovery ratios were 97.3~103.3 % at the range above LOQ. In the solid phase extraction method using AutoTrace SPE Workstation to automate sample pretreatment, the correlation coefficient of absorbance versus concentration was 0.99. The precision of this method showed the relative standard deviations of 1.9~11.0 %. The of detection(LOD) and quantitation(LOQ) was 2.6 ㎍/L and 7.9 ㎍/L, respectively. According to correlation, recovery ratio, and precision studies, this acetylacetone method was shown to be quantitative to formaldehyde, rapidly and accurately. It is considered that in water supplies or water treatment process, formaldehyde can be easily analyzed by using UV/Vis spectrophotometer belonging to the water purification plant.
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문백수 ( Bag-sou Moon ),남화정 ( Hwa-jung Nam ),장승은 ( Seung-eun Jang ),여은영 ( Eun-yeong Yeo ),이은주 ( Eun-ju Lee ),김지선 ( Ji-seon Kim ),김정임 ( Jeong-im Kim ),송재용 ( Jae-yong Song ),조남규 ( Nam-gyu Cho ),이성모 ( Sung- 한국가축위생학회 2017 韓國家畜衛生學會誌 Vol.40 No.1
In order to find a way to reduce histamine formation when storing salted mackerel at home, a series of experiments were carried to monitor the time-related changes of histamine content, total aerobic bacteria and coliform quality of mackerel marketed in Incheon by the type of storage containers (clean, zipper and vacuum bag) during storage at 4°C, 24°C and -20°C for 10 days. Histamine formation was continuously increased with passing time during storage at 4°C, whereas it was decreased after 3 days during storage at 24°C. The initial value of histamine was maintained during storage at -20°C for 10 days. During storage at 4°C, total aerobic bacteria and coliform showed a tendency to increased rapidly till 3day and then decreased gradually. The formation of histamine was increased in the order of vacuum bag<zipper bag<clean bag during storage at 4°C.
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