• KIEAE Journal
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• 제13권2호
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• pp.157-162
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• 2013

To deal with the water pollution arising from the construction site, this study raises the issues of management and laws and it suggest the efficient way to reduce water pollution by through the case studies. In order to study, seven cases were selected from "Construction Environmental Management Best Practice Competition" co - sponsored by Construction Association of Korea and Construction Environment Association. As a study result, there are problems that depending on the characteristic of the construction site environment simple alone settling facilities can not handle muddy and dirty water generated by the construction site. However, when the construction site applied improved water pollution control facilities with reflecting the characteristic of muddy and dirty water. The problem can be solved moreover it can achieve exceeded emission standard. Therefore new regulations and management with water pollution control facilities considering characteristic of environment is needed to cope with water pollution arising from the construction site.

• 생태와환경
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• 제38권3호통권113호
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• pp.281-288
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• 2005

폐수배출시설별 BAT 평가제도는 폐수특성을 고려한 배출시설별 배출허용기준 설정, 오염총량관리기본계획 및 시행계획에 따른 오염부하삭감 가능량 산정, 신규오염물질에 대한 배출허용기준 산정 등 효율적인 산업폐수관리를 위해서 도입할 필요가 있다. 본 연구에서는 외국사례와 국내 폐수배출시설들의 현황 등을 조사하여 국내여건에 적합한 BAT 평가방안을 제시하였다. 본 평가절차의 핵심은 폐수배출시설별 처리시설에 대한 환경인자, 경제적 수용가능성, 기술적 인자 및 경제성 등을 객관성 있고 전문적인 판단이 가능토록 한데 있다. 본 BAT 평가방안은 처리수준에 근거한 폐수배출시설별 배출허용기준마련 및 오염총량관리를 위한 기초 자료로 활용할 수 있으며, 신규오염물질 및 유해오염물질의 배출허용기준 마련 등 정책적${\cdot}$법적 제도개선에 유용하게 활용할 수 있을 것으로 사료된다.

• 상하수도학회지
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• 제19권4호
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• pp.462-472
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• 2005

This study was carried out to suggest the plans for installation of rural sewage treatment facilities through the analysis of these facilities installed in Chungchongnam-do Province. About 5% of all installation was carried out by the department of wastewater and related environment problems and the other case was carried out by the department of construction or residence. In wastewater caused by 250 and 300 persons, facilities capacity do not exceed about $50m^3/d$, caused by 2,500 and 3,000 persons, $500m^3/d$. Advanced sewage treatment process were first needed in the discharge area where affected the water environment greatly. However, in carrying out the water quality pollutant of the total amount management system in the other areas, they should be driven only over the scale of pollutant quota object facilities standard. Rural sewage must be included in the special accounts according to the regulations of local government, and sewage treatment cost should be collected to manage. Installation type uses integrating joint treatment method in case the distance among villages is short or one treatment facility independently.

• 생태와환경
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• 제49권2호
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• pp.124-129
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• 2016

본 연구는 하수처리장에서 최종 방류되는 하수처리수의 거품발생 원인분석과 저감방안을 제시하고자 수행되었다. 감조하천의 방류구에서 거품이 발생하는 것은 구조적인 문제점으로 파악되었다. 거품은 낙차에 의한 공기 연행과 확산방지막에 의한 내부축적이 주요한 원인이었다. 이러한 여건을 고려하여, 방류수로와 방류구 종단에서 미세스크린과 수중방류를 통해 거품발생을 완화시킬 수 있는 효과적인 방안을 제시하였다.

• 상하수도학회지
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• 제38권1호
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• pp.29-38
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• 2024

Wastewater management is increasingly emphasizing economic and environmental sustainability. Traditional methods in sewage treatment plants have significant implications for the environment and the economy due to power and chemical consumption, and sludge generation. To address these challenges, a study was conducted to develop the Intermittent Cycle Extended Aeration System (ICEAS). This approach was implemented as the primary technique in a full-scale wastewater treatment facility, utilizing key operational factors within the standard Sequencing Batch Reactor (SBR) process. The optimal operational approach, identified in this study, was put into practice at the research facility from January 2020 to December 2022. By implementing management strategies within the biological reactor, it was shown that maintaining and reducing chemical quantities, sludge generation, power consumption, and related costs could yield economic benefits. Moreover, adapting operations to influent characteristics and seasonal conditions allowed for efficient blower operation, reducing unnecessary electricity consumption and ensuring proper dissolved oxygen levels. Despite annual increases in influent flow rate and concentration, this study demonstrated the ability to maintain and reduce sludge production, electricity consumption, and chemical usage. Additionally, systematic responses to emergencies and abnormal situations significantly contributed to economic, technical, and environmental benefits.

• 수도
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• 통권63호
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• pp.43-56
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• 1993

• 수도
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• 통권69호
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• pp.120-131
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• 1994

• 대한토목학회논문집
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• 제34권6호
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• pp.1901-1910
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• 2014

현재 국내외 BIM을 도입한 사회기반시설 적용 사례는 BIM 시각화를 기반으로 하는 설계 및 시공단계에 제한되며 효율적 운영을 위한 설계, 시공 정보 활용 방안에 대한 연구는 매우 미미하다. 본 연구는 최근 국내 경제 발전에 많은 기여를 하고 있는 산업설비군 중 운영 및 유지관리 능력 향상이 필요한 하수처리시설을 대상으로 BIM 기반 통합 유지관리 프로토타입 시스템을 개발하였다. 본 연구에 사용된 주요 연구 방법으로는 시스템 개발 순서에 따라 진행하였으며, 최종적으로 개발된 프로토타입 시스템의 현업 적용 가능성을 판단하기 위하여 4가지의 대표적 유지관리 시나리오를 제안하고 산출물을 통해서 문제 해결이 가능함을 보여준다. 최근 상하수도시설의 자산관리 개념 도입 노력과 유역기반 운영 및 유지관리의 정책 및 제도 적 변화, 그리고 국내 상하수도 기술력의 해외시장 진출 필요에 따른 운영 및 유지관리 능력 고도화를 위해 본 연구결과가 일조할 수 있기를 기대해 본다.

• 상하수도학회지
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• 제34권6호
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• pp.495-502
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• 2020

The 37 indicators for performance evaluation of public sewage management agencies are divided into four major categories (agency manpower management ability, wastewater treatment plant operation and management, sludge and water reuse, service quality) in the first stage, and the necessity and score acquisition for the detailed indicators by each major category in the second stages. Priority was investigated through the Analytic Hierarchy Process (AHP) analysis technique for ease and relevance of company efforts. Also, based on the results of this analysis, integrated type weighting and relative importance were analyzed. As a result of the analysis, the weight and relative importance of the first stage classification were in the order of wastewater treatment plant operation and maintenance, operation agency manpower management ability, sludge and water reuse, and service quality. As a result of analyzing the weights and priorities of the detailed performance indicators in the second stage, it was found that operator's career years, the percentage of certification holding rate in operators, compliance with the effluent water quality standards, training times for operators, and efforts to manage hazardous chemicals were important. Some of the indicators of operation agency performance evaluation may include indicators in which the performance of the company's efforts is underestimated or overestimated. In order to improve this, it is necessary to give weights in consideration of the necessity of the indicator, the relevance of the company's efforts, and the ease of obtaining scores.

• 한국습지학회지
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• 제9권1호
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• pp.47-60
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• 2007

The rapid development of economy in China at the expense of consuming huge amount of energy and resources, water resource in particular, which has resulted in the production and discharge of increasing amount of wastewater to the water environment. In order to effectively control the increasing water pollution trend, the State Council has stipulated that all the cities with population over 500,000 should reach wastewater treatment rate of 60% by 2005, and all the cities should reach the rate of 60% by 2010, of which Capital Beijing and all the province capital cities and important tourism cities should reach 70% then. By the end of 2005, of the 661 cities in China, 393 have built and operated municipal wastewater treatments with a total number of 790 sets, total treatment capacity of $80.91{\times}106m^3/d$ and total treatment rate of > 48%. Other 73 cities have started the construction of municipal wastewater treatment plants, and other 168 cities have started to prepare, planning and design of wastewater treatment plants. Most of municipal wastewater treatment plants in big cities in China operate normally and perform well with good quality of effluent in terms of wastewater treatment train, but the sewage sludge treatment is usually poor with big problems. It has been found that the small scale WWTPs using activated sludge process in the towns are usually operated and maintained abnormally because of lack of fund, skilled operators and energy. It is therefore suggested that the small scale MWWTPs in small cities and towns adopt appropriate technologies, of which the most available ones are multi-stage ponds, constructed wetlands and the combination of them for further purification and reuse of treated wastewater.