• 제목/요약/키워드: Sewage Treatment

검색결과 1,183건 처리시간 0.033초

개인하수처리시설의 제도개선에 관한 연구 (The System Improvement of the Individual Sewage Treatment System)

  • 장효주;이장훈;강선홍
    • 상하수도학회지
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    • 제24권1호
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    • pp.33-40
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    • 2010
  • Individual sewage treatment system is classified into a sewage treatment system which treats all the domestic sewage and a water-purifier tank which treats only effluent flushing from the toilet. The number of registered manufacturers has increased rapidly since 2001. As a result, price competition has increased among the manufacturers and has caused the problems such as the inappropriate production of individual sewage treatment system, the unreasonable permit for building completion and the shortage of the professional technology of the community's public officials in charge. This study collected the problem cases that are related with existing individual sewage treatment system and operation. Efficient improvement plan for the stable supply, installation, maintenance of individual sewage treatment system were suggested.

하수처리시설의 에너지 자립화 방안 연구 (Study on Energy Independence Plan for Sewage Treatment Plant)

  • 김영준;정철권;강용태
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.15-20
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    • 2008
  • The objectives of this study are to analyze the energy independence plan and to propose a suitable sewage treatment plant in Korea. The total amount of electricity consumption for public sewage treatment plant was estimated as 1,182 GWh in 2007. It was estimated that total 16 sewage treatment plants with renewable energy systems produced electricity of 15.2 GWh per year, which could replaced 0.8% of total electricity used for sewage treatment. It was found that domestic sewage treatment plants with power generation plants by digestion gas were installed in 7 places and produced electricity of 13 GWh per year. It was also found that the power generation plants by digestion gas were the most cost-effective for sewage treatment out of the renewable energy systems based on the benefit-cost analysis.

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개인하수처리시설 운영 및 실태 연구 (Study on the Operation and Status of Private Sewage Treatment Facilities)

  • 이장훈;신현곤
    • 유기물자원화
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    • 제28권2호
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    • pp.31-40
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    • 2020
  • 국내 개인하수처리시설은 불량제품의 유통과 부실시공의 우려가 끊이지 않아 오수처리시설의 계획 및 설계에 적용 가능한 단위공정별로 최소한의 기준은 필요할 것으로 판단된다. 본 연구에서 살펴본 운영실태 분석결과의 문제점 및 필요사항은 1) 개인하수처리시설 관리감독자의 교육 강화, 2) 오수처리시설 운영관리 미흡, 3) 하수처리구역 외 2 ㎥/day 미만 시설의 오수처리시설 의무화 검토, 4) 음식점 오수처리시설에 대한 관리방안 필요, 5) 기술검토결과 부적정 시설에 대한 개선안 마련이 필요하다. 또한 국내·외 개인하수처리시설 관련 지침 및 자료 등을 조사·분석하여 설계·시공 및 유지관리 가이드북을 마련할 필요성이 요구된다.

에너지 생산형 하수처리장을 위한 가용 기술과 통합관리 방안 (Available Technology and Integrated Management Plan for Energy-positive in the Sewage Treatment Plant)

  • 송민수;김형호;배효관
    • 한국물환경학회지
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    • 제36권1호
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    • pp.55-68
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    • 2020
  • Because of the intensified environmental problems such as climate change and resource depletion, sewage treatment technology focused on energy management has recently attracted attention. The conversion of primary sludge from the primary sedimentation tank and excessive sludge from the secondary sedimentation tank into biogas is the key to energy-positive sewage treatment. In particular, the primary sedimentation tanks recover enriched biodegradable organic matter and anaerobic digestion process produces methane from the organic wastes for energy production. Such technologies for minimizing oxygen demand are leading the innovation regarding sewage treatment plants. However, sewage treatment facilities in Korea lack core technology and operational know-how. Actually, the energy potential of sewage is higher than sewage treatment energy consumption in the sewage treatment, but current processes are not adequately efficient in energy recovery. To improve this, it is possible to apply chemically enhanced primary treatment (CEPT), high-rate activated sludge (HRAS), and anaerobic membrane bioreactor (AnMBR) to the primary sedimentation tank. To maximize the methane production of sewage treatment plants, organic wastes such as food waste and livestock manure can be digested. Additionally, mechanical pretreatment, thermal hydrolysis, and chemical pretreatment would enhance the methane conversion of organic waste. Power generation systems based on internal combustion engines are susceptible to heat source losses, requiring breakthrough energy conversion systems such as fuel cells. To realize the energy positive sewage treatment plant, primary organic matter recovery from sewage, biogas pretreatment, and co-digestion should be optimized in the energy management system based on the knowledge-based operation.

농촌 지역 마을하수도 유입 하수 특성과 효율 분석 (Analysis of RCSTP Sewage Characteristics and Treatment Efficiency in Rural Area)

  • 임지열;정동기;길경익
    • 한국물환경학회지
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    • 제28권6호
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    • pp.851-858
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    • 2012
  • This study conducted a result analysis on operation of 26 Rural Community Sewage Treatment Plant (RCSTP) newly constructed in Yeong-yang, Bong-hwa and An-dong areas which are located at the upper region of An-dong Dam and Im-ha Dam. Based on operation result, an analysis on characteristics of sewage in each area and the treatment efficiency of the installed treatment process was conducted. The result of analysis on characteristics of sewage has shown the difference in concentration of the sewage according to area characteristics. Sewage in areas with frequent occurrence of agricultural water and livestock wastewater had high concentration. It is important to select the most suitable treatment process when selecting a treatment process for RCSTP according to properties of sewage in each area. As a result of operation, the disposal efficiency for organic matter and suspended solids was stable with less fluctuation, but the disposal efficiency for nitrogen and phosphorus showed high fluctuation. This signifies that it is necessary to pay attention to operation condition management of nitrogen and phosphorus when operating RCSTP.

국내 하수처리시설에 인공지능기술 적용을 위한 사례 연구 (The Case Studies of Artificial Intelligence Technology for apply at The Sewage Treatment Plant)

  • 김태우;이호식
    • 한국물환경학회지
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    • 제35권4호
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    • pp.370-378
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    • 2019
  • In the recent years, various studies have presented stable and economic methods for increased regulations and compliance in sewage treatment plants. In some sewage treatment plants, the effluent concentration exceeded the regulations, or the effluent concentration was manipulated. This indicates that the process is currently inefficient to operate and control sewage treatment plants. The operation and control method of sewage treatment plant is mathematically dealing with a physical and chemical mechanism for the anticipated situation during operation. In addition, there are some limitations, such as situations that are different from the actual sewage treatment plant. Therefore, it is necessary to find a more stable and economical way to enhance the operational and control method. AI (Artificial Intelligence) technology is selected among various methods. There are very few cases of applying and utilizing AI technology in domestic sewage treatment plants. In addition, it failed to define specific definitions of applying AI technologies. The purpose of this study is to present the application of AI technology to domestic sewage treatment plants by comparing and analyzing various cases. This study presented the AI technology algorithm system, verification method, data collection, energy and operating costs as methods of applying AI technology.

하수처리 공정시스템에서 유량제어기법의 활용에 관한 연구 (A Study on the applications of flow control methods in sewage treatment process system)

  • 정성윤;강선홍
    • 상하수도학회지
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    • 제30권5호
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    • pp.597-604
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    • 2016
  • This study was begun with the object of actively reflection the rapid technological advancements of the electronical control and mechanical control industries to sewage disposal methods. Or focuses on applying a flow control method that utilizes inverters and automatic valves to sewage treatment process systems. This study proposes that sewage treatment process systems architects must acquire a certain degree of technical skills in the areas of electrical and mechanical controls in order to raise the standard of completeness of sewage treatment process systems. And further emphasizes that there is required continuous research on automatics valves that are used in sewage treatment.

하수처리공정의 물 자원 생산 시스템 설계에 대한 적용 1. 하수처리공정의 처리효율 분석 및 평가 (Application of Sewage Treatment Processes to a System Design for Water Resource Production 1. Analysis and Assessment of Sewage Treatment Process Efficiency)

  • 신춘환
    • 한국환경과학회지
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    • 제25권8호
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    • pp.1155-1163
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    • 2016
  • The treatment efficiencies of domestic sewage treatment processes were analysed and assessed to suggest and design a suitable technology for coal seam gas (CSG) water treatment. Two sewage treatment plants (S and G in Busan) were selected. The former operates with standard activated sludge and modified Ludzak Ettinger processes while the later uses the combination of $A_2/O$ and gravity fiber filtration. For both plants, the concentrations of BOD, $COD_{Mn}$, T-N and T-P were about 5.0, 19.0, 5.0, 11.0 and 1.0 ppm, respectively, which satisfy the discharge standards. Therefore, although sewage treatment processes seems to be applicable for CSG water treatment, additional processes to remove total dissolved solids and ionic compounds (i.e. bicarbonate) need to be introduced to produce fit-for-purpose water resources for beneficial use (in accordance with Water ACT 2013). This, for the CSG treatment process design, it is necessary to align the operating conditions with merging methods of combinable unit technology obtained from sewage treatment processes.

하수처리시설의 에너지 자립화 방안 연구 (Study on Energy Independence Plan for Sewage Treatment Plant)

  • 김영준;이종연;강용태
    • 설비공학논문집
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    • 제22권1호
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    • pp.49-55
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    • 2010
  • The objectives of this study are to analyze the energy independence plan and to propose a suitable sewage treatment plant in Korea. The total amount of electricity consumption for public sewage treatment plant was estimated as 1,812 GWh in 2007. It was estimated that total 16 sewage treatment plants with renewable energy systems produced electricity of 15 GWh per year, which could replace 0.8% of total electricity used for sewage treatment. It was found that domestic sewage treatment plants with power generation plants by digestion gas were installed in 7 places and produced electricity of 13 GWh per year. It was also found that the power generation plants by digestion gas were the most cost-effective for sewage treatment plant out of the renewable energy systems based on the benefit-cost analysis.

충청남도 하수처리시설의 공정 및 운영 특성 분석 (Analysis of Process and Operating Characteristics for Chung Nam Province Sewage Treatment Plants)

  • 어성욱;이상진
    • 한국물환경학회지
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    • 제25권4호
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    • pp.553-559
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    • 2009
  • Currently, small scale sewage works are getting increase in Chung Nam Province and it is strongly required for those plants to get the information of optimized procedures and technologies. Most processes for sewage works in Korea were designed for large scale plants, so many difficulties are observed in small scale sewage works. This study was conducted to evaluate the propriety of O&M and construction cost for sewage treatment plants in Chung Nam Province. The treatment results and process stability of 32 public sewage treatment plants were also investigated. It is expected to provide optimum O&M and construction cost for future small scale sewage works and improving projects of existing plants by these results. Pollution problems caused by small scale plants are usually restricted to small areas; however, in view of the high cost per unit population, treatment requirements and alternatives have to be studied carefully. In comparison to larger plants, more pronounced and different boundary conditions such as unstable influent load, per capita costs and a large variety of feasible treatment and disposal systems were considered.