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RISS 인기검색어
- 검색키워드
- 저자 : Kap Soo Doh ) (검색결과 58 건)
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도갑수,이성희 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.3
The management of generating source was studied for effect treatment and disposal of municipal solid waste(MSW). Two house with boiler using briquette, one apartment with central heating system and Bukhan National Park were selected in this study as generating source. Generation rate, composition and properties such as moisture volatile solid(V.S), fixed solid(F.S) and lower heating value(LHV) of each materials in the MSW were measured weekly, and the collection system of MSW in Seoul city were investigated. From this experimental results, the following conclusions were obtained. 1. The annually average generation rate of MSW was 377g/cap.day in the case of apartment and 1350g/cap.day in the case of house which involved briquette ash in 75wt%. 2. As the generation rate changes in a large range in our country(the number of month within 15% above or below yearly mean were more than 33%), It is very difficult to determine the size of collection and treatment facilities. 3. It was possible to recover directly papers and plastic to 90% and 80%of them respectely from the generating source. In this case, the waste resources could be with good quality within 10% moisture content. 4. The weight proportions of garbages(vegetable, food and fruits) and plastic were 46.9 and 9.7wt% in annually average respectively, which were higher than those in other country. The moisture content and V.S. content of MSW were 45.3 and 41.4/wt% in annually average. 5. The lower heating value of MSW was measured to be 2170㎉/㎏ in wet basis after briquette separation, but to go down 800㎉/㎏ after papers and plastic recovery. 6. The equations for estimating LHV in wet basis were obtained in This equation (7) and (8), was found to be more correct than other equations. LHV = 4500Vc + 9500Vp-600W[㎉/㎏]···(7) LHV = 7260 Pi + 2950Pa + 640(P_(G)+P_(F))+4000Pc-600W[㎉/㎏]···(8) 7. The collection system containing separated collection in Seoul city was ineffective owing to the lack of landfill site and loading place of MSW. 8. It is necessary for as to take proper management system for solid waste in the National Park because visitors and generation quantity of solid waste change largely according the place and season. 9. The major collection facilities in the National Park were waste basket and incineration box, but the incineration box was too large and its collection period was irregular, so it was cause to the congestion of solid waste and bad smell. Therefore, we must set up the more waste basket which able to fine within 40∼50 m from the origination place of solid waste and induce the visitor to throw the solid waste, and remove the incineration basket to one-third of total volume for the only purpose of open burning of solid waste at elevated place.
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Acrylonitrile제조 부산물에서 Acetonitrile의 회수(II)
都甲守 慶北工業專門大學 1977 論文集 Vol.14 No.-
In order to recover acetonitrile from byproduct obtained in manufacturing acrylonitrile, the sample colleted directly from the factory was treated respectively with extracting salt such as sodium chloride, potassium carbonate in batch and semi-continuous extraction subsequent rectification process. In batch type extraction process, the composition of upper layer was about 91wt% acetonitrile and the recovery yield about 70%, and in semi-continuous extraction subsequent rectification process, the bottom product having composition of about 99wt% acetonitrile was obtained.
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도갑수 慶北工業專門大學 1978 論文集 Vol.15 No.-
In the spray type liquid-liquid extractor 5cm in diameter and 1m in height, the dispersion of i-propy1 alcohol into continuous potassium carbonate aqueous solution was studied by measuring the composition of dispersed phase every 10 minute according to diameter of orifice and flow rate of dispersed phase. As the result of this study, the optimum dispersion time is known to approach 20 minute at 0.2cm in orifice diameter of diameter of dispersed phase distributor and 1.5l/min in flow rate of dispersed phase.
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박영태,도갑수 慶北工業專門大學 1980 論文集 Vol.18 No.-
식품공장에서 배출되는식염폐수는 주로 채소를 소금물에 절이는 과정에서 생겨나며, 이 폐수는 생물학적으로 분해 불가능한 염과 유기고체의 혼합물로 되어 있으므로 응접 및 생물학적 처리만으로는 좋은 결과를 얻을 수 없다. 또한 소금의 농도가 10% 이상을 유지하므로 이 소금을 재생시키는 것이 바람직하다. 본 연구는 식염폐수를 공장에서 직접 채취하여 모래 층에서 여과한후 흡착질용액으로 하고 흡착제로 zeolite와 입상활성탄을 사용하여 회분흡착실험을 통하여 흡착평형과 흡착능 및 식염폐수의 재상용 능성을 조사하였다. 평형에서의 흡착량은 입상활성탄이 6.1㎎/g adsorbent, zeolite가 5.5㎎/g adsorbent가 되었다. 실제 공장에서 쓰여질 흡착탑의 설계를 위하여 fixed bed에서 연속실험을 했으며 유량과 폐수의 초기농도 및 흡착제 종류에 따른 break through curve 를 얻어 설계를 위한 제반인자를 설정하고 흡착 process를 제안하였다. 제안한 process의 고정투자비를 각 흡착제별로 계산하고 경제적인 타당성을 고찰한 결과 폐수의 량을 20㎥/day로 가정했을때 고정투자비 기준으로 약 0.12원/liter SPB 이 되어서 경제성이 있음을 알았다. A continuous process ofr recovery of spent pickle brine(SPB) by preliminary filteration on a sand bed to remove suspended solids, followed by adsorption treatment in an granular activated carbon and zeolite-sand micture column to remove colour and odor causing organic compounds is investigate. Batch isotherm adsorption experiments revealed that the adsorption capacity of the SPV-adsorbent system is respectively 6.1㎎ total organic carbon per gram granular activated carbon and 5.5㎎ total organic carbon per gram zeolite a t25℃. It is estimated that a low capital investment of 0.12 won per liter of recycled treated SPB is required for a 20㎥/day capacity. This cost is much lower than that of fresh salt, and thus will be defrayed by savings on recycled salt.
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박영태,도갑수 慶北工業專門大學 1979 論文集 Vol.16 No.-
The adsorption of C.O.D in the waste water from the dyeing mill was studied to develop effective adsorbent by using zeolite mined out Yeung ill, Korea. The amount of C.O.C. adsorbed by the adsorbent was measured at constant time interval for the whole operationg runs. The effect of particle size of zeolite used, initial concentratiom of C.O.D in waste water were investigated, and the kinetics and the equilibriun of adsorption were discussed from experimental data. In the kinetic study, the adsorption by zeolite is known to be controlled by intraparticle diffusion and, interier diffusion, and the adsorption equilibrium concentration of C.O.D. on zeolite is nearly equal to that of granular active carbon. Therefore the Yeungill zeolite could be effectively used as economic adsorbent in order to treat waste water of the dyeing industries.
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이인현,장원,백영,도갑수,최재규 한국환경과학회 1997 한국환경과학회지 Vol.6 No.6
In order to analyze the water quality variation of surface water around the Sudokwon landfill site, seasonal variations of water temperature, pH, DO, BOD, COD, SS, NH_3-N. NO_2-N, and NO_3-N were examined at 10 sites from January to December, 1996. It was found that the estimates of COD, DO, SS, and NH_3-N were increased compared with the results of environmental impact assessment carried out in 1988. Higher estimates of COD, DO, and SS were due to industrial and agricultural wastewater, and the increase of NH_3-N at Jangdo reservoir site was due to the leachate from the landfill. In particular, the estimate of SS was found to be increased by the soil wash from the landfill during the heavy rainy days.
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Theory and Applications on Reverse Osmosis
Doh, Kap Soo 한국기술사회 1982 技術士 Vol.15 No.3
역삼투의 공업적 응용은 최근 수처리 관계 뿐만아니라 식품 공업, 전자 공업, 약품 공업 및 유전자 공업에까지 그 범위가 넓어지고 있다. 현재 국내에서도 상당 수 보급되었고, 앞으로 점점 그 이용도가 증가하리라고 전망된다. 이와같은 역삼투에 대하여 지금까지 발표된 기본원리와 삼투막의 제조 및 성질을 논하고, 역삼투조작에 있어서 물질전달방정식과 유동방정식음 유도하고 이를 이용하여 역삼투조작의 처리용량과 분리능력을 추정할 수 있는 방법을 고찰하였다.
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