• Title/Summary/Keyword: Sewage treatment facility

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

  • Lee, Jang-Hown;SHIN, Hyun-Gon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.28 no.2
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    • pp.31-40
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    • 2020
  • As private sewage treatment facilities in Korea are constantly concerned about the distribution and poor construction of defective products, minimum standards for each unit process applicable to the planning and design of sewage treatment facilities are deemed necessary. The problems and requirements of the analysis results of the operation status discussed in this study are as follows. 1) Strengthening education of supervisor of private sewage treatment facility. 2) Poor operation and management of Sewage treatment facilities. 3) A mandatory review of sewage treatment facilities for less than 2 ㎥/day of facilities other than sewage treatment zones. 4) Necessity of management of sewage treatment facility in feedstocks. 5) As a result of the technical review, Improvement plans for Ineligible facility are needed. It is also necessary to prepare a guidebook for design construction and maintenance by investigating and analyzing guidelines and data related to domestic and foreign private sewage treatment facilities.

Biotechnological Potential of Marine Cyanobacteria in Wastewater Treatment: Disinfection of Raw Sewage by Oscillatoria willei BDU130511

  • Uma, L.;Selvaraj, K.;Manjula, R.;Subramanian, G.;Nagarkar, Sanjay
    • Journal of Microbiology and Biotechnology
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    • v.12 no.4
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    • pp.699-701
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    • 2002
  • The current study demonstrates the ability of the marine cyanobacterium Oscillatoria willei BDU130511 to disinfect raw sewage. Within a holding time of 3 h under laboratory conditions, the organism drastically reduced in the total bacterial and coliform counts at various pH levels, in both unbuffered and buffered sewage, thereby suggesting a potential role for cyanobacteria in wastewater treatment.

A Study on Pre-treatment Facility for Foodwaste and Sewage Sludge Mixture (음식폐기물과 하수슬러지 병합처리를 위한 전처리시설에 관한 연구)

  • Kim, Jong-Oh;Lee, Chang-Ho;Kim, Ji-Young
    • Journal of the Korea Organic Resources Recycling Association
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    • v.11 no.1
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    • pp.84-89
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    • 2003
  • The purpose of this study was to evaluate and improve the pre-treatment facility for foodwaste and sewage sludge mixture treatment. The process of foodwaste pre-treatment consists of storage, classification with crushing, and thickening. The effluent of sewage treatment facility was used as the diluting and washing water. The panicle size of foodwaste after pre-treatment was almost under 2mm, the mixture of foodwastes and sewage sludge showed an advantage to the anaerobic digestion. The amount of gas production increased from 0.8ton/day ($CH_4$ : 0.5ton/day) to 3.5ton/day ($CH_4$ : 2.3ton/day) after the anaerobic digestion of the foodwastes and sewage sludge mixture. The amount of sludge cake increased from 11.2ton/day to 21.2ton/day. Therefore, the proper operation of the foodwaste pre-treatment facility was contributed to the efficient anaerobic digestion of foodwaste and sewage sludge mixture treatment.

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Alternatives for Optimum Installation of Rural Sewage Treatment Facilities in Chungchongnam-do Province (충청남도 마을하수처리시설의 최적 설치방안)

  • Yi, Sang-Jin;Jung, Jong-Gwan;Lim, Bong-Su;Huh, Jae-Young
    • Journal of Korean Society of Water and Wastewater
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    • v.19 no.4
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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.

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

  • Choi Mi-Young;Na Wook-Ho;Hong Won-Hwa;Kim Sam-Yeul
    • Journal of the Korean housing association
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    • v.16 no.1
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    • pp.27-35
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    • 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.

A Study on the Application of Natural Zeolite as Coagulant Aid for Effluent Quality Improvement in Private Sewage Treatment Facility (개인하수처리시설 처리수의 수질 개선을 위한 응집보조제로서의 천연제올라이트 적용에 관한 연구)

  • Choi, Jung Su;Joo, Hyun Jong
    • Journal of Korean Society on Water Environment
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    • v.28 no.1
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    • pp.121-128
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    • 2012
  • The purpose of this study is to solve the problem of nutrient removal due to rapid hydraulic retention time (HRT) variation in small size private sewage treatment facility and to have better effluent quality by using natural zeolite as a coagulant aid. The experiments were conducted by applying different conditions of HRT, coagulant, and zeolite dosages. As an experimental result, $TBOD_{5}$, TSS, and TP removal efficiencies were 64.9%, 94.5%, and 98.8% at co-injection with zeolite. Overall removal efficiencies of $TBOD_{5}$, TSS, and TP have improved 15.7, 28.7, 6.1%, respectively. This result shows that zeolite addition could improve flocculation, increase setting velocity, and thus have better treatment. Therefore the use of zeolite as a coagulant aid can be useful in small size private sewage treatment facility, where especially extra nutrient removal is required to meet the legal standard for discharge.

Improvement for Asset Management of Sewage Treatment Facilities (하수처리시설 대수선비 자산화 영향분석 및 제도개선 방안)

  • Park, Ha Jin;An, Man Sun;Cho, Nam Ho;Kim, Kyong Ju
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.31 no.2D
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    • pp.285-293
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    • 2011
  • Sewage treatment facilities are growing rapidly in quantitatively and qualitatively. However, privatization such as up-size and professionalism, etc. are insufficient, compared to global companies' cases. Infrastructure Asset management has not been applied widely despite of sewage treatment facilities are one of the most critical social infrastructure. Maintenance, repair, and rehabilitation (R&R) practices of sewage treatment facilities have been studied and infrastructures asset management techniques have been applied. Cost model which makes it possible to calculate managerial costs such as major cost, etc. needs to be developed only with project basic information when proceeding new sewage treatment facility construction and management and overseas sewage project. Effects to converse major repair cost into capital, application of sewage treatment facility's asset management, expected effects, etc. were analyzed and suggested an alternative on the improvements of legal system.

Study on the Operation and Improvement of Excretory Treatment Facilities: Focusing on the case of Seoul City (분뇨처리시설 운영 및 개선 연구: 서울시를 중심으로)

  • Lee, Jang-Hown;Shin, Hyun-Gon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.30 no.4
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    • pp.123-130
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    • 2022
  • This study was conducted to prepare a plan for the operation and improvement of excretory treatment facilities in Seoul, where the amount of excrement is expected to continue to increase due to the increase in the installation of septic tanks, a private sewage treatment facility. As a result, there are problems due to the lack of treatment capacity and increase in the amount brought in. To improve this, it is necessary to expand the overall excretory treatment facility, adjust the area of some facilities, reduce the amount of excrement through the realization of excretory units, and reduce the amount of excrement due to the change of the type of sewage treatment facility.

A Study on Treatment Measures of Carcass Disposal Site Leachate into the Livestock Manure and Sewage Treatment Facilities using NIER-MASS program (NIER-MASS 프로그램을 이용한 가축매립지 침출수 연계처리 방안 연구)

  • Jeong, Dong-Hwan;Lee, Chulgu;Shin, Jinsoo;Kim, Hyunwoo;Yoon, Soohyang;Kim, Yongseok;Yu, Soonju;Kim, Shinjo
    • Journal of Environmental Impact Assessment
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    • v.21 no.5
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    • pp.725-734
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    • 2012
  • The outbreak of foot and mouth disease in November 2010 raised many social, economic and environmental issues and water contaminations by leachate from carcass disposal sites particularly emerged as a serious concern. In oder to efficiently handle these problems, a critical method is required to transport leachate to livestock manure and sewage treatment plants and purify it. This study aims to present the best applicable method to transport leachate from carcass disposal sites into livestock manure and sewage treatment facilities. We investigated the biological and chemical characteristics such as BOD, COD, SS, TN, TP and Total coliforms. Current conjugated treatments in livestock manure and sewage treatment plants was studied by surveying the operations of those facilities. The NIER-MASS(National Institute of Environmental Research - Mass Balance Evaluation System of Sewage Treatment Facilities) program was applied to present the best conjugated treatment method through estimating the maximum daily load to meet the water quality standards in effluent.

Effect Analysis on Self-supporting Energy of Newtown Sewage Treatment Facility for Low-carbon Green City (저탄소 녹색도시 조성을 위한 신도시 하수처리시설의 에너지 자립 효과 분석)

  • Ahn, Soo-Jeung;Hyun, Kyoung-Hak;Kim, Jong-Yeob;Choung, Youn-Kyoo
    • Journal of Korean Society of Water and Wastewater
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    • v.24 no.6
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    • pp.683-690
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    • 2010
  • Renewable and unutilized energy (biogas power generation, wind power, solar, small hydro-power, sewage heat source, etc.) seems to be suitable to install for the sewage treatment facilities. There are 357 sewage treatment plants in 2007. 17 plants among these have been operating for self-supporting energy by using solar power, small hydro-power and biogas in 2008. Newly built sewage treatment plant of 96,000 $m^3$/day for a newtown is expected to get up to energy consumption of 10 GWh/yr. If solar energy, small hydro-power and biogas-equipments were applied to the new treatment plant, self-supporting energy of the new sewage treatment plant will get up to 56.1%. As a results, about 2,379ton $CO_2$/yr $CO_2$ emission reduction can be expected by using renewable energy. These efforts for self-supporting energy will lead sewage treatment plant to new energy recycle center.