중금속 함유 폐기물의 재사용을 위한 환경적 평가에 관한 연구

배해룡,권영배,Bae, Hae-Ryong,Gwon, Yeong-Bae,Moszkowicz Pierre 한국기계연구원 1998 硏究論文集 Vol.28 No.-

철강재생 공장내의 전기 용융로에서 발생된 먼지중의 아연 성분을 재생하는 공정인 Waelz 공정에서는 매년 많은 양의 slag가 발생되어진다. 표면이 유리질성인 이 slag의 물리적 특성이 매우 우수하며, 건축 현장에서 골재(모래나 자갈)의 대체물질로 사용 가능한 만큼 높은 안정성을 지니고 있다. 유럽공동체 과 제인 본 연구는 여러 종류의 slag에 대한 용출특성, 물리-화학적 특성조사 및 광물학적 특성 연구에 주안점을 두었다. 용출실험으로는 법규실험과 slag의 재사용 시나리오와 관련된 여러 주요인자에 대한 영향(pH, 산환원 전위, 용매의 화학적특성, L/S비 등)에 대하여 조사되어졌다. In the recycling industry, the recuperation of zinc from Electric Arc Furnace dust by the Waelz process generates important quantities of slag. This slag presents good mechanical properties, and for the most siliceous slag. a high stability which would enable its use by total or partial substitution of certain granulates in civil engineering Our study (within the framwork of a European programme cofunded by the European Commission-DGXII) concerns the physico-chemical and mineralogical characterization and leaching behaviour of several types of Waelz slag. The leaching tests are regulatory tests and specific characterization tests of leaching behaviour. They take into account the influence of several main parameters of the valorization scenarios envisaged for the slag(e.g. pH, Redox potential, chemical nature of the leachant, type of contact-liquid/ solid etc.).

경주시 생활폐기물의 발생원에 따른 물리·화학적 특성에 대한 연구

배해룡 경주대학교 건설환경연구소 2006 建設環境論叢 Vol.- No.8

Physico-chemical characteristics of municipal soild wastes(MSWs) is very important to manage MSWs and estimate the type and the capacity of wastes treatment facility. The management of the MSWs treatment facilities is so poorly accomplished because the evaluation of the MSWs treatment facility has not been carried out by considering the data-base for the characteristics of MSWs. Hence, it is necessary to measure the characteristics of MSWs to build the data-base of the characteristics of MSWs.

세척공정에 의한 소각비회의 재활용 가능성 평가

배해룡 경주대학교 건설환경연구소 2000 建設環境論叢 Vol.- No.3

The purpose of this study was to find a way to usefully treat MSWI (Municipal Solid Waste Incinerator) fly ash. Such as washing process the pretreatment of MSWI fly ash is examined before its application to cementation. Using the process, leachable components such as sodium, potassium and chloride which are interference elements for the cementation could be easily removed. The washing solutions used in the study are the distilled water, 0.01M nitric acid solution, Ca(OH)2 saturated solution, 0.01M A12(SO4)3 solution. The ratio of liquid/solid is of 1.5. After washing process, the fly aches(ash K and M) are applied as a secondary raw materials inside paste or mortar matrix. During the 7, 28, 56 curing days the physico-chemical proprieties of solidified matrix are analyzed. In the all case, the concentrations leached of heavy metals from Korea leaching test are below the limit values of the Korea Decree for landfill. The compressive strength of paste and mortar matrix which are mixed fly ash washed are increased over 200kgf/cm2 and over 400kgf/cm2, respectively.

경주시 폐기물발생 및 처리 형황에 따른 개선방안

배해룡 경주대학교 건설환경연구소 2009 建設環境論叢 Vol.- No.11

The purpose of this study was to investigate the actual states of solid wastes(SWs) generated in Gyeongju ci and to improve its treatment methods. It is important to know accurately the generation quantity of solid wastes in order to improve its proper treatment method and to form the reasonable waste management plan. The municipal solid wastes(MSWs) generation was on the decrease in 2003-2006, but the industrial solid waste showed a 300% increase. The treatment methods currently in use or being considered were the sanitary landfill(46.9%), incineration inferior 2% without energy recovery systems and recycling process(51.3%) to MSWs. The industrial solid waste was recovered 74 7% in 2006. On the whole, it was confirmed that the energy recovery systems had availabilities to treat the MSWs. As it were, it is an important thing to select the technologies of recycling or sanitary treatment methods for by-products that were generated from solid waste treatment process such as bio-gas and heat energy.

계절변화에 따른 경주 보문호 수질의 특성조사

배해룡 경주대학교 건설환경연구소 2008 建設環境論叢 Vol.- No.10

The purpose of this research was to analyze the water quality of Bomun Lake with the concentration of DO, COD, SS, T-N and T-P according to the seasonal variation in Gyeongju city. Sampling for water monitoring was conducted during the spring time ( March - May ), the summer time ( June - August ), the autumn time ( September - November ), and the winter time ( December - February )at the sites of W-l and W-2. The results of this study were as follows : The pH and Do measured at the sites were attained the Korea water quality standard and the concentration of SS and T-P showed relatively lower than water quality of level III for Korea water quality standard of lake water. But the concentration of COD and T-N showed upper than one of Korea water quality standard, It has shown that the value of pH and concentration of COD were only a little different according to the seasonal variation. But it has shown that the concentration of DO in winter was higher than one of another season, in case of T-N was e opposite situation, Also value of T-P s been taken high in summer and autumn. As we know that, water quality of Bomoon in Gyeongju has been serious influenced owing to seasonal factor, It should be particularly helpful to the management officials who are responsible for the planning of water quality of Bomun Lake in Gyeongju.

하수슬러지 처분 방안들에 대한 문헌연구

배해룡 경주대학교 건설환경연구소 2006 建設環境論叢 Vol.- No.8

This study focuses finding suitable wastewater sludge treatment methods for the future by examining the existing wastewater sludge treatment methods, korea sees about 1.7 million tons of wastewater sludge every year and about 64.3%, or 1.1 million tons, is treated by ocean disposal. Othertypes of disposal included 0.4 million ton(25.2%) in landfill, 8,000 tons(5.1%) in recycling, 9,000 tons(5.4%) in incineration, etc. This study analyzes and evaluates the incineration, fusion, Pyrolysis, solidification, composting, drying, ocean disposal, and landfill methods to find the most efficient method of disposal for wastewater sludge, In result, incineration, fusion, and pyrolysis significantly reduce the masses but have less cost-efficiency. Also, Korea has mostly relied on the landfill method for the disposal of wastewater sludge until today. However, this unreasonable method must be replaced by the methods of recyling directly through composting or solidification or after reduction of masses following the prohibition of landfill. Local governments are expected to consider their local environments and find the modt effcient method of disposal for the best results. Also, further studies are required in terms of the recycling of reusable.

쓰레기 종량제 평가와 경북지역의 생활폐기물 처리현황 : Kyongju, Ulsan and Pohang

배해룡 경주대학교 지역개발연구소 2000 地域開發論叢 Vol.- No.3

The aims of this research was to assess the user charge system and to analyse the actual states of Municipal Solid Waste(MSW) treatment methods in Kyongju, Ulsan and Pohang. The methods currently in use or being considered were the conventional disposal processes such as landfill, incineration and recovery systems in these cities. The results of this study indicate that the method actually used are very similar in Kyongju, Ulsan and Pohang, most use a sanitary landfills : 60%, 65.5% and 77.5%, respectively. The ratios of incineration are inferior 2%. It should be particularly helpful to solid waste officials who are responsible for the planning of solid waste treatment methods.

음식물류 폐기물의 특성 및 효율적인 처리 방안

배해룡 경주대학교 건설환경연구소 2005 建設環境論叢 Vol.- No.7

The purpose of this study was to investigate the characteristics of food waste in Korea and to evaluate for five food waste treatment process. It is important to know the characteristics of food wast in order to select its proper treatment method. The methods currently use or being considered were the conventional recycling processes such as composting, animal feeding, generation source treatment, biological treatment and carbonization. The composting process showed relatively high reduction of dry weight and organic solid contents of food waste, but there are some nuisance odor emissions during the treatment periods. On the whole, it was confirmed that the mechanical reduction process had availabilities to treat the food waste at generation sources. As it were, it is an important thing to develop the technologies of recycling or sanitary treatment methods for by-products that were generated from food waste treatment process. On the other hand, it was considered that further studies would be continued about the economic analysis composting to the traditional community recycling methods.

미생물을 이용한 폐수의 질산화/탈질산화 공정비료

배해룡 경주대학교 2000 論文集 Vol.13 No.-

According to the high industrialization and urbanization of population, industrial, domestic, agricultural and livestock wastes and wastewaters have been rapidlly increased, and made severely our environment polluted. Especially, nitrogen compounds containing in wastewater have not regulated and treated and so they hva brought out several pollution problems on the natural water. According the high industrialization, increasing amount of fertilizers and fossil fuels has increased the amount of nitrogen compounds from natural sources such as precipitation, dust falls, run off from rural area. Various nitrigen compounds from these various sources duplicate oxygen in drainage water and bring the adverse effects on self purification of streams and aquatic ecosystem bby biostimulation of aquatic plants and toxicity of aquatic organisms. This pollution phenomena make water quality worse and water use difficult. Uptaked water from this pollution make several water supply problems such as clogging filtration beds, taste and odor problems, production of carcinogenic compounds like trihalomethanes and high water treatment cost. And so, this research was performed in order to develope the biological treatment techniques off nutrients in wastewater from the literature analysis of design factors and operation conditions on the existing treatment methods.

국내 음식물쓰레기 자원화 기술의 문제점 및 효율적인 운영방안

배해룡 경주대학교 건설환경연구소 2007 建設環境論叢 Vol.- No.9

The purpose of this study was to investigate the problems of food waste recycling process in Korea and to fmd its improvement methods. The methods currently use or being considered were the conventional recycling processes such as composting, animal feeding, generation source treatment, biological treatment and carbonization. The composting process showed relatively high reduction of d weight and organic solid contents of food waste, but there are some nuisance odor emissions during the treatment periods. On the whole, it was confirmed that the mechanical reduction process had availabilities to treat the food waste at generation sources. As it were, it is an important thing to develop the technologies of recycling or sanitary treatment methods for by-products that were generated from food waste treatment process. On the other hand, it was considered that further studies would be continued about the economic analysis of by-products generated by pre-separated recycling methods of various food waste sources.