• 제목/요약/키워드: Water resource facility

검색결과 48건 처리시간 0.027초

수자원시설물의 유지관리 체계 선진화를 위한 입법 및 정책과제 (Legislative and policy issues related to the advancement of the maintenance system of water resource facilities)

  • 이기하;연민호;이대업;김성원;김진수
    • 한국수자원학회논문집
    • /
    • 제53권spc1호
    • /
    • pp.773-784
    • /
    • 2020
  • 본 연구에서는 수자원시설물의 노후화 정도와 관리현황 등을 조사·분석함으로써, 수자원시설물의 유지관리 체계 선진화를 위한 입법 및 정책과제를 제시하였다. 수자원시설물의 노후화를 분석하기 위해 한국시설안전공단에서 운영하는 시설물통합정보관리시스템의 자료를 수집하여 분석에 활용하였다. 시설물별, 종별, 시도별, 등급별로 구축된 안전등급 자료를 이용하여 위험시설물 비율과 고령화율을 산정하여 수자원시설물의 현황을 분석하고 수자원시설 관련 지침 및 매뉴얼을 조사하였다. 이를 통해 1) 수자원시설물 범위의 재조정 및 지침·매뉴얼의 보완, 2) 재해여건 변화를 고려한 유지관리 체계의 구축, 3) 시설물통합정보시스템의 개선 및 표준연계서비스 활성화, 4) 시설물의 자산관리체계 구축의 네 가지 입법 및 정책과제를 제시하였다.

대구시 하수처리장 운전실태에 따른 중수도 도입 방안 연구 (A Research for Introduction of Graywater Facility on Analysis of Actual Conditions of Sewage Treatment Plant in Daegu City)

  • 최미영;나욱호;홍원화;김삼열
    • 한국주거학회논문집
    • /
    • 제16권1호
    • /
    • pp.27-35
    • /
    • 2005
  • It has seen the significant increase of water consumption rate due to rapid industrialization, high-densities of city, and increasing the population; thereby leads further water resource required in near future. In order to solve this deficit there are one of solution that gray water method demonstrates advantages regarding the questions of optimal water utility and thereby master plan of water. The method of study is analysis of investigation data through interview and research of sewage treatment plants in Daegu City. Through these analysis, this paper examines the capacity of graywater and optimal graywater facility.

음식물류 폐기물 자원화시설의 공정개선에 관한 연구(II) - DDM환경자원센터의 탈취시설 사례를 중심으로 - (Study on the Improvement Process for the Food Waste Resource Facility (II) - Focus on Deodorization Facility of DDM Environment Resource Center -)

  • 김충곤;배윤환;신현곤
    • 유기물자원화
    • /
    • 제27권1호
    • /
    • pp.33-38
    • /
    • 2019
  • 본 연구는 전국적으로 운영되고 있는 음식물류 폐기물 공공자원화 시설 중에서 초기에 제시된 운전조건과 맞지 않게 비정상적으로 운전되고 있는 DDM환경자원센터의 탈취시설을 대상으로 하여 실시하였다. DDM환경자원 센터의 비정상적인 탈취시설에 대한 쟁점사항은 퇴비화시설내부의 탈취와 실내공기질 문제 및 시설 전반적인 탈취문제이며 특히 축열식 연소장치(RTO)의 운전 중 정지되는 현상과 세정탑 내 살수 불량현상 등으로 나타났다. 이러한 비정상적인 운전시설을 정상적 운전시설로 전환하기 위한 개선방안 및 대안으로는 발효조 상부의 전면필터 제거와 분진제거용 스크레버, 기수분리기, 롤필터 등의 설치를 제안하고자 한다.

인버터 적용 펌프모타의 부하운전별 진동해석 (Analysis of Vibration of apply to drive pump with inverter)

  • 황진열;김기원
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2011년도 제42회 하계학술대회
    • /
    • pp.1131-1132
    • /
    • 2011
  • For the purpose to flow control of pump in booster pump station, nonlinear-load inverter equipment is being introduced. While inverter equipment has the advantage of power-ratio savings and volume control, due to the vibration of pump and motor, secondary breakdown may occur Purpose in this paper is reliable facility operation by providing optimal operationg standards through vibration analysis of apply to drive pump with inverter in long-term in booster pump station.

  • PDF

폐정화조를 재활용한 다목적 빗물관리시스템 구상 및 경제성 분석 (Recycling of a discarded septic tank as a rainwater management system and it's economic feasibility analysis)

  • 김미경;곽동근;한무영;양지청
    • 상하수도학회지
    • /
    • 제23권5호
    • /
    • pp.647-654
    • /
    • 2009
  • Since the end of the 1990s, sewer pipe improvement works have been going on: most septic tanks have been thrown away and discarded. These discarded septic tanks amounts up to 370,000 based on the project plan 2005-2008: it is a serious squander of nation's resources, a contaminating means that buries toxins under soil, and a cause of a expensive waste. Research on recycling of discarded septic tank as a new resource is in urgent need. This research suggests plans to recycle discarded septic tank as a rainwater management facility, solutions to water cycle recovery in the limelight, and economic analysis of the plan. In the case of a recycling discarded septic tank as a rainwater management facility will socially benefit to support economical adequacy, discard cost saving of septic tank and water supply and sewage cost reduction will come out. Consequently a rainwater management facility converted from a discarded septic tank leads to decentralization of the rainwater management system, which anticipates a positive effect on recovery of urban water cycle.

Reviewing the Applications of Three Countries' Ground Water Flow Modeling Regulatory Guidelines to Nuclear Facilities in Korea

  • Lee, Chung-Mo;Hamm, Se-Yeong;Hyun, Seung Gyu;Cheong, Jae-Yeol;Wei, Ming Liang
    • 한국지하수토양환경학회지:지하수토양환경
    • /
    • 제22권3호
    • /
    • pp.1-9
    • /
    • 2017
  • The numerical analysis of groundwater flow is indispensable for predicting problems associated with water resource development, civil works, environmental hazards, and nuclear power plant construction. Korea lacks public regulatory procedures and guidelines for groundwater flow modeling, especially in nuclear facility sites, which makes adequate evaluation difficult. Feasible step-by-step guidelines are also unavailable. Consequently, reports on groundwater flow modeling have low-grade quality and often present controversial opinions. Additionally, without public guidelines, maintaining consistency in reviewing reports and enforcing laws is more challenging. In this study, the guidelines for groundwater flow modeling were reviewed for three countries - the United States (Documenting Groundwater Modeling at Sites Contaminated with Radioactive Substances), Canada (Guidelines for Groundwater Modelling to Assess Impacts of Proposed Natural Resource Development Activities), and Australia (Australian Groundwater Modelling Guidelines), with the aim of developing groundwater flow modeling regulatory guidelines that can be applied to nuclear facilities in Korea, in accordance with the Groundwater Act, Environmental Impact Assessment Act, and the Nuclear Safety Act.

주공정에서 아질산화-혐기성 암모늄 산화법에 의한 단축질소제거공정 연구동향 (Main-stream Partial Nitritation - Anammox (PN/A) Processes for Energy-efficient Short-cut Nitrogen Removal)

  • 박홍근;유대환
    • 한국물환경학회지
    • /
    • 제34권1호
    • /
    • pp.96-108
    • /
    • 2018
  • Large efforts have recently been made on research and development of sustainable and energy-efficient short-cut nitrogen removal processes owing to strong attention to the energy neutral/positive wastewater treatment system. Anaerobic ammonium oxidizing bacteria (anammox bacteria) have been highlighted since 1990's due to their unique advantages including 60% less energy consumption, nearly 100% reduction for carbon source requirement, and 80% less sludge production. Side-stream short-cut nitrogen removal using anammox bacteria and partial nitritation anammox (PN/A) has been well established, whereas substantial challenges remain to be addressed mainly due to undesired main-stream conditions for anammox bacteria. These include low temperature, low concentrations of ammonia, nitrite, free ammonia, free nitrous acid or a combination of those. In addition, an anammox side-stream nitrogen management is insufficient to reduce overall energy consumption for energy-neutral or energy positive water resource recovery facility (WRRF) and at the same time to comply with nitrogen discharge regulation. This implies the development of the successful main-stream anammox based technology will accelerate a conversion of current wastewater treatment plants to sustainable water and energy recovery facility. This study discusses the status of the research, key mechanisms & interactions of the protagonists in the main-stream PN/A, and control parameters and major challenges in process development.

ASSESSMENT OF A NEW DESIGN FOR A REACTOR CAVITY COOLING SYSTEM IN A VERY HIGH TEMPERATURE GAS-COOLED REACTOR

  • PARK GOON-CHERL;CHO YUN-JE;CHO HYOUNGKYU
    • Nuclear Engineering and Technology
    • /
    • 제38권1호
    • /
    • pp.45-60
    • /
    • 2006
  • Presently, the VHTGR (Very High Temperature Gas-cooled Reactor) is considered the most attractive candidate for a GEN-IV reactor to produce hydrogen, which will be a key resource for future energy production. A new concept for a reactor cavity cooling system (RCCS), a critical safety feature in the VHTGR, is proposed in the present study. The proposed RCCS consists of passive water pool and active air cooling systems. These are employed to overcome the poor cooling capability of the air-cooled RCCS and the complex cavity structures of the water-cooled RCCS. In order to estimate the licensibility of the proposed design, its performance and integrity were tested experimentally with a reduced-scale mock-up facility, as well as with a separate-effect test facility (SET) for the 1/4 water pool of the RCCS-SNU to examine the heat transfer and pressure drop and code capability. This paper presents the test results for SET and validation of MARS-GCR, a system code for the safety analysis of a HTGR. In addition, CFX5.7, a computational fluid dynamics code, was also used for the code-to-code benchmark of MARS-GCR. From the present experimental and numerical studies, the efficacy of MARS-GCR in application to determining the optimal design of complicated systems such as a RCCS and evaluation of their feasibility has been validated.

AHP기법을 이용한 수요자 중심의 농업가뭄 영향 평가 기준 도출 연구 (A Study on the Derivation of the User-Oriented Agricultural Drought Assessment Criteria Using the AHP technique)

  • 이석주;송재도;장태일;설동문;손재권
    • 농촌계획
    • /
    • 제24권4호
    • /
    • pp.47-55
    • /
    • 2018
  • Currently in the drought evaluation, which is a supplier-oriented standard that applies storage rates of reservoirs, evaluation for users that use agricultural water is not done. Therefore, this study established drought evaluation items for drought evaluation based on farmers' judgement, conducted a survey on farmers and experts, compared and analyzed weighted value between two groups, and then classified the evaluation standards per each evaluation item. The agricultural drought evaluation items are 5 major items of water supply lapse rate, agricultural weather, agricultural irrigation facility, crop and soil, and 12 subsections for regional characteristics and opinions of consumers that use water to be reflected. The result of analyzing weighted value of farmers and experts' major items shows that farmers is agricultural irrigation facility(0.219), water supply lapse rate(0.211), agricultural weather(0.204), crop(0.183) and soil(0.183). Experts is agricultural weather(0.297), agricultural irrigation facility(0.202), water supply lapse rate(0.189), crop(0.162) and soil(0.150), which displays difference between the two groups. The agricultural drought criteria standards are established based on precedent studies and cases, and grades of evaluation items are 1st grade(extreme stage), 2nd grade(warning stage), 3rd grade(alert stage) and 4th grade(attention stage). The above analysis per each consumer-oriented agricultural drought evaluation item and the analysis on the standards of evaluation grades are expected to be used as a basic resource for establishing agriculture drought policy and selecting drought area in the future.

상하수도 서비스 평가지표 개발 및 적용: 상수도 분야를 중심으로 (Development and Application of Performance Indicators to Estimate the Service Activities Relating with Water and Wastewater Works: Focus on Water Works Parts)

  • 최태용;윤여천;이정란;김덕진;조재홍;구자용
    • 상하수도학회지
    • /
    • 제20권3호
    • /
    • pp.411-429
    • /
    • 2006
  • To improve Service quality for water and wastewater works, most water and wastewater utility effort to develop not only facility construction but also operation optimization. The operation is optimized by accurate estimation for ongoing situation. And from the accurate estimation, utility operator gain a information about their service quality and problems, So we developed a evaluation tool (Performance Indicators: PI) for service activity of water and wastewater works. The PI was developed in many countries and some international organizations (World Bank, IWA etc.) for service benchmarking. And ISO (international organization for standardization) just has been making a service standard for water and wastewater system (So called ISO/C224). This proceeding for making a service standard is ongoing now and will be launched in 2007. In our study, PI was composed of 6 parts (A human resource, facility management, operation, service quality, finance and environment). To evaluate water utilities, performance indicators for water was consisted of 100 items. Each 2 water utilities were estimated by this performance indicator. From the study, we just know that the performance indicator was a very useful tool to estimate utility service quality. And from the result, it is possible to know the strong and weak point of estimated utilities.