• 한국환경보건학회:학술대회논문집
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• 한국환경보건학회 2002년도 춘계 국제 학술대회
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• pp.26.2-39
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• 2002

Tan-Sui River Basin covers Taipei metropolitan area of 2,726 square kilometers with more than six million residents. Since 1988, Taiwan government started to plan and construct an integrated sewerage system, consisted by both separated and concentrated trunk sewers, wastewater treatment plants and ocean outfalls. This presentation will introduce the master plan and major facilities of Tan-Sui River Basin sewerage system. Other measures to protect general water quality and the environment of adjacent river basin area of Tan-Sui River and her tributaries by Taiwan EPA will be presented as well.

• 상하수도학회지
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• 제28권5호
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• pp.517-527
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• 2014

As sewer flooding frequents due to localized and concentrated stormwater and increased non-permeable surface area after urbanization, building cities with sound water recycle and accordingly efficient management of rainwater is demanded. To do this, the existing sewage (including rainwater) fee imposition system should be philosophically evaluated. This study presents problematic issues of the existing domestic sewage fee imposition system considering the principle of sharing costs on the service of sewage and rainwater collection and treatment. Four methods to improve the existing sewage fee imposition system are suggested: 1) imposing stormwater fee according to Polluter Pays Principle, 2) clarification of the share of public sector, 3) reducing or exempting the sewerage fee for inhabitants reducing urban runoff by constructing their own rainwater management facilities, 4) imposing charge for discharging rainwater to sewers due to new development action. Short, mid, or long term planning for rainwater management is recommended considering the situation of each municipality.

• 대한환경공학회지
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• 제37권9호
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• pp.533-541
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• 2015

일본의 "유역별 하수도정비종합계획"(이하 '유총계획') 및 비와호 유역하수도를 소개하고 이를 바탕으로 국내에서 2013년도부터 수립 시행되고 있는 "유역하수도정비계획"의 발전방향 등을 제시하였다. 일본의 유총계획은 환경기본법에서 정하는 수질환경기준을 준수하기 위한 계획으로 비와호의 경우는 지자체의 조례에 의한 가중 배수기준보다 더 엄격한 기준을 적용하여 수립 시행하고 있는 것으로 분석되었다. 특히 비와호의 경우는 응집제첨가다단소화탈질법 등의 고도처리공법을 건설초기단계부터 적용하여 방류수의 수질항목별 농도가 BOD 0.9 mg/L, SS 0.6 mg/L, T-N 5.5 mg/L, T-P 0.06 mg/L였으며 BOD의 처리효율은 99.5%로 매우 높았다. 도입초기단계인 국내 유역하수도계획의 발전을 위해서는 평가항목의 다양화, 비용최소화, 건설 및 유지 보조금제도 개선, 경제적 개념의 배출부하량조정시스템의 도입, 유역하수도 개념 적립 등의 적용 방법 등을 장기적인 관점에서 연구할 필요가 있다.

• Spatial Information Research
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• 제19권6호
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• pp.67-74
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• 2011

본 연구에서는 지하시설물도 구축에 기존의 수치지도 및 편집지적도의 대안으로 가독성 및 일반인의 접근성을 높인 항공사진을 사용하여 하수 지하시설물도를 시범구축 하였다. 구축된 하수 지하 시설물도는 기존의 편집지적도기반 지하시설물도와 연계하여 그 활용 가능성 및 정합성 연구를 수행하였다. 지적도와 항공사진을 융합하여 지하시설물도를 구축 활용하면 지하시설물에 대한 다양한 공간정보 분석과 체계적이고 종합적인 통합정보 활용이 가능하다. 또한, 고도정보화 사회에서 항공사진을 이용한 지하시설물도 작성은 관리기관별로 존재한 도면 및 기존 도면의 사용에 따른 문제점에 대한 대안으로 통합관리를 위한 기본도로서의 구실을 할 수 있을 것으로 판단된다. 또한, 항공사진을 이용한 하수 지하시설물도 구축 정보는 앞으로 도시정보시스템 구축에 연계하여 체계적인 도시계획의 수립 및 관리의 효율 성도 도모할 수 있을 것으로 생각한다.

• 상하수도학회지
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• 제28권3호
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• pp.315-324
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• 2014

The residents' odor complaint is steadily increasing by odor causing from sewage system. A current drainage facilities and septic tank are included in the individual sewerage according to Sewerage Act. However, definitions and legal standards of drainage tank are insufficient. In addition, specifications and maintenance standards related to structure and size are not established. In this research, effect of drainage tank in individual sewage facilities on the odor occurrence was studied and the concentrations of $H_2S$ and composite odor were measured. From the measurements, the concentration of $H_2S$ and composite odor were 1 ppm ~ 5 ppm and 1.04 OU ~ 4.05 OU, respectively, before pump operation. Also, the concentration of $H_2S$ and composite odor were 5 ppm ~ 33 ppm and 5.10 OU ~ 35.04 OU, respectively, after pump operation. The concentration of SS in the effluent from drainage tank was ranged from 840 mg/L to 1,980 mg/L. These high concentration of SS seemed to be the major source of foul smell when high concentrated suspended solids in the public sewerage system were decomposed and then emitted. In this research, correlation coefficient ($R^2$) between $H_2S$ and composite odor before and after pumping were 0.925 and 0.918, respectively.

• 상하수도학회지
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• 제35권6호
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• pp.497-505
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• 2021

This paper investigates the current status of Jeju special self-governing province (JSSGP)'s water infrastructure and recommends directions for improvement. JSSGP relies on groundwater for most of its water resources. Recently, water usage has been steadily increasing due to the increase of residents and tourists while the quality of groundwater has been steadily worsening. Deterioration in water quality of groundwater can be seen through the increase in concentration of nitrate nitrogen and microorganisms. To overcome such problems, water consumption must be reduced by water demand management in all fields including residential and agricultural water use. The quality of water resources should be preserved through the management of pollutants. For efficient management of water resources, great efforts should be made to reduce the leakage rates in household and agricultural water, which is currently at the highest level in the country. Furthermore, diversification of water intake sources other than groundwater is needed, especially for agricultural water supply. For water and sewerage facilities, compliance with drinking water quality standards and discharge water quality standards must be achieved through the optimization of operation management. This process requires recruiting professionals, improving existing workers' expertise, and improving facilities.

• 융합정보논문지
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• 제11권4호
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• pp.122-129
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• 2021

2021년부터 총유기탄소(TOC)가 국내 공공하수처리시설의 새로운 유기물질 기준 지표로 선정됨에 따라, 기존 유기물질 관리지표(DOC, BOD5, CODMn, CODCr)와의 상관성 분석을 통해 TOC의 적용 타당성 평가가 필요하다. 본 연구에서는 500개소 공공하수처리시설을 공정 및 시설용량에 따라 구분하여 유입 및 방류수에 대한 유기물질 관리지표간의 상관성 분석을 실시하였다. 다른 유기물질 관리 지표 대비 유입수와 방류수 내 화학적 산소요구량(CODMn)와 TOC간 농도비와 결정계수(R2)는 상대적으로 높았다. 유기물질 관리지표간의 상관성 결과는 새로이 기준으로 도입된 TOC와 관련된 다양한 연구 수행에 기초자료로 활용될 것으로 기대된다.

• 대한공간정보학회지
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• 제12권3호
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• pp.3-12
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• 2004

시설물관리시스템은 지자체에 도입된 보편적인 GIS활용체계라 할 수 있다. 지난 몇 년간 많은 지자체에서 시설물관리시스템을 개발하였는데 특히 상 하수도의 도로관리시스템 부분에 치중하였다. 여기에 도입된 시설물관리 범용프로그램의 개념은 지자체간의 개발업무에 있어 중복을 최소화하는 것이다. 최근 지자체에서는 분야별로 정보화의 한계를 인식하고 도시정보체계 구축으로 관심을 돌리고 있다. 따라서 본 연구에서는 지자체에서 도시정보체계를 구축할 수 있도록 지원하기 위한 범용프로그램의 활용가능성을 제시하고자 한다. 이렇게 함으로써 도시정보체계 구축에 있어 중복투자의 방지, 프로젝트 시간단축, 실패가능성의 최소화와 정보프로젝트의 활성화가 기대된다.

• 한국습지학회지
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• 제10권3호
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• pp.37-45
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• 2008

The Philippine government enacted the National Water Crisis Act in 1995, as a response to the burgeoning situation of water supply systems in the country. This act led to the privatization of Metropolitan Waterworks and Sewerage System (MWSS), sector having jurisdiction and control over all waterworks and sewerage systems in a service area including Metro Manila. Nowadays, the region's supply of water is still facing a lot of difficulties, both in quality and quantity. The unabated migration of people to the metro which increases its population, tapping from the aged pipelines, lack of water facilities and infrastructure, excessive groundwater withdrawal, environmental degradation, and surface and groundwater pollution are some of the issues that Metro Manila have to deal with. These situations lead to two primary water supply issues suffered by Metro Manila: water shortage and flooding. The purpose of this paper was to present water supply in Metro Manila with respect to the problems in its distribution, environmental implications and quality. In this paper, several technical reports, published literature, and news articles were consulted and became the major basis for identifying gaps and suggesting remedial measures.

• 상하수도학회지
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• 제32권5호
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• pp.453-460
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• 2018

The impact of sodium hydroxide, which is one of chemicals of clean in place (CIP) for removing membrane fouling, on the PVDF membrane is reviewed with respect to physical/chemical structural change, the permeability affected therefrom. Based on the cleaning concentration applied in membrane water treatment facilities, 10% of accumulated defluorination was confirmed up to 166g.hr/L which reflects the exposure time. However, membrane resistance was confirmed to be reduced by about 10%. Through FT-IR and EDS analysis, reduction of F and change of are confirmed as factors that affect the permeability of membrane. Membrane resistance, which affects permeability, is affected by loss of additives for hydrophilicity, rather than defluorination of PVDF material. Therefore, in order to check membrane degradation degree, an accelerated test by NaOH was carried out, loss of additives was confirmed, and then PVDF inherent characteristic was observed.