• Title, Summary, Keyword: Generation of domestic sewage

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A study on the prediction of the generation of domestic sewage by improvement of water demand estimation (생활용수 수요추정방법 개선에 의한 하수발생량 예측에 관한 연구)

  • 김재윤
    • Journal of Environmental Science International
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    • v.11 no.12
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    • pp.1275-1279
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    • 2002
  • This study was performed to improve water demand estimation and analize correlation between generation of domestic sewage and domestic water use. To improve the prediction of water demand estimation, new water demand equation was developed. The results is as follows. $InQ_t = {\beta}_0+{\beta}_1InP_t+{\beta}_2InY_t+{\beta}_3InH_t+{varepsilon}_t$By using the statistical analysis of the "generation of domestic sewage" and "domestic water use", the regression equation between them is formed. The result is as follows. Generation of domestic sewage : 0.8487 $\times$ Domestic water use + 684.57 ($R^2$= 0.972)>$R^2$= 0.972)

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

  • Kim, Young-Jun;Chung, Chul-Kwon;Kang, Yong-Tae
    • Proceedings of the SAREK Conference
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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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Study on Energy Independence Plan for Sewage Treatment Plant (하수처리시설의 에너지 자립화 방안 연구)

  • Kim, Young-Jun;Lee, Jong-Yeon;Kang, Yong-Tae
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.22 no.1
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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.

Determination of Interception Flow by Pollution Load Budget Analysis in Combined Sewer Watershed (II) - Establishment of Intercepting Capacity and Reduction Goal of Overflow Pollution Load - (오염부하 물질수지 분석을 통한 합류식 하수관거 적정 차집용량 결정(II) - 차집용량과 월류오염부하 삭감목표 설정 -)

  • Lee, Doojin;Shin, EungBai
    • Journal of Korean Society of Water and Wastewater
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    • v.19 no.5
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    • pp.557-564
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    • 2005
  • The objective of this study is to evaluate a criteria of intercepting capacity and a reduction goal of overflow pollution load in combined sewer system. In the current criteria of intercepting capacity in the domestic sewage facility standard, it is known that three times of peak sewage (Q) in dry period or runoff flow by 2mm/hr is not appropriate since the intercepted flow is estimated by runoff and show different result even in the same watershed. Though a reduction goal of overflow pollution load can be determined from 1) same level of storm-water runoff pollution load in separated storm sewer, 2) less than 5% sewage load in dry weather period, by the domestic sewage facility standard, the simulated results from storm-water model show large differences between two criteria. While it is predicted that sewage pollution load standard three time larger than separated storm sewer standard in high population density and urbanized area, it is shown that separate storm sewer standard larger than sewage pollution load standard in middle population density and developing area. Accordingly, it is proposed that more reasonable intercepting flow and reduction goal of overflows pollution load should be established to minimize discharging pollution load in combined sewer systems. For the purpose, a resonable standard has to be amended by pollution load balance considering the characteristics of a watershed for generation, collection, treatment, and discharging flow.

Physicochemical Characteristics and Estimation of H2S Emission Rate from Municipal Solid Waste at the Environmental Facilities in Busan City (부산지역 환경기초시설에서 발생하는 폐기물의 물리, 화학적 특성 규명 및 황화수소 발생량 예측에 관한 연구)

  • Lee, Taeyoon;Kim, Doyong;Kim, Jaejin;Lee, Junki
    • Journal of the Korean Geoenvironmental Society
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    • v.10 no.2
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    • pp.13-20
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    • 2009
  • There have been increasing interests in the odor generation problems as concerns about the quality of life has been increased recently. Especially, approximately 67% of the odor complaints from environmental facilities are those from sewage treatment facilities and food waste treatment facilities. Moreover, sewage ocean dumping will be prohibited from 2012 by the international and domestic ocean laws, and thus, demand for alternative management plans is increasing. Therefore, it was first selected 5 sewage treatment facilities and 5 food waste treatment facilities where the amounts of waste are relatively immense in Busan, and collect their sludge samples. Then it was investigated the samples' physical and chemical characteristics through proximate analysis, elemental analysis, XRF analysis, and calorific value analysis. Finally, estimate the $H_2S$ emission rates were estimated in order to apply the results as the basic data for providing the fundamental solution for the oder complaints. As a result, the concentration of $H_2S$ in sewage sludge and in food waste treatment facility were 57.3 mg/kg and 19.7 mg/kg in average, respectively. Finally, the units of $H_2S$ in wastes stored in total 10 waste treatment facilities was estimated 16,017,910.0 mg/d.

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