• Title/Summary/Keyword: Water environmental

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A study on the effects of environmental investment and costs on environmental performance (환경 투자 및 비용이 기업의 환경성과에 미치는 영향)

  • Park, Gwang-Dueg;Park, No-Suk;Kim, Seong-Su;Seo, In-Seok
    • Journal of Korean Society of Water and Wastewater
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    • v.23 no.3
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    • pp.315-320
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    • 2009
  • This study found that introduction of environmental systems and increased environmental investment have a major impact on K company's sustainable development. The analysis indicated that the environmental investment variable has a close relationship with production quantity, sales, and the amount of sludge treatment variables in K company. However, all other variables including the cost of disinfection chemicals, and the expenditure of sludge treatment have no relationship with the environmental investment variable. Additionally, short-term results show that the company's environmental expenditure variable is conversely related with the environmental performance variable.

The Effect of Genenal Ion for Biological Perchlorate Treatment from Zinc Smelting Inorganic Wastewater (아연제련소 무기성폐수 중 간섭이온이 생물학적 퍼클로레이트 처리에 미치는 영향)

  • Kim, Shin-Jo;Lee, Ki-Yong;Lee, Ki-Cheol;Park, Sang-Min;Kwon, Oh-Sang;Jung, Dong-Il
    • Journal of Korean Society on Water Environment
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    • v.26 no.5
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    • pp.768-774
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    • 2010
  • This study was conducted to provide a technical solution to treat effectively perchlorate from inorganic wastewater of zinc smelting. Despite an inhibition dissolved inorganic substances in the wastewater discharged from zinc smelting has demonstrated with the activity of microbes, biological treatment technology could reduce perchlorate to a satisfactory level under such stressful conditions. It was found that either conductivity or $SO{_4}^{2-}$ concentration of the wastewater was able to be used as the adequate index and the values were $2,450{\mu}S/cm$ and 1,200 ppm respectively. When $SO{_4}^{2-}$ increased from 0 to 16,000 ppm (conductivity : $428{\rightarrow}24,800{\mu}S/cm$), perchlorate biodegradation rate was reduced due to 1/10 times from 0.0365 to 0.0033/h, however, most of perchlorate was removed under the condition of hydraulic retention time (HRT) at 0.5day and mixed liquor volatile suspended solid (MLVSS) at 2,000 ~ 3,000 ppm.

Contamination Sources of Several Potentially Hazardous Compounds Found at the Gap Stream and the Miho Stream, Two Major Tributaries of the Geum River (금강 수계 주요지류인 갑천과 미호천에서 잠정유해물질 오염원 확인 연구)

  • Lee, Jun-Bae;Lee, Jay-Jung;Cho, Yoon-Hae;Yoon, Jo-Hee;Hong, Seoun-Hwa;Lee, Dae-Hee;Lee, Dae-Hee;Cho, Young-Hwan;Shin, Ho-Sang
    • Korean Journal of Environmental Agriculture
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    • v.35 no.1
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    • pp.15-23
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    • 2016
  • BACKGROUND: Water quality is of concern to water utility operators, public health officials, and populations using the water. If any contaminant is released from a point of entry, it could be spread rapidly throughout the water stream. So the identification of the location of the points of entry and its release history are critical informations to establish the management strategy.METHODS AND RESULTS: Aniline, nonylphenol, pentachlorophenol and formaldehyde in 39 surface water samples were analysed using Gas chromatography-mass spectrometry (GC-MS) methods. Formaldehyde, aniline and nonylphenol were mainly detected in the near sites where industrial waste water and domestic sewage were discharged into stream. But pentachlorophenol was detected in the downstream samples where pulp manufacturing plants were operated.CONCLUSION: Results indicate that pentachlorophenol found in main stream of Guem river was mainly introduced from pulp manufacture industries. Otherwise, formaldehyde, aniline and nonylphenol were mainly contaminated from the industrial waste water and domestic sewage.

Study on corrosion characteristics of treatment plants in Korea (국내 정수장의 부식성 특성 연구)

  • Min, Byung-dae;Chung, Hyen-mi;Lee, Lee-nae;Choi, Inchol;Ahn, Kyunghee;Park, Ju-hyun
    • Journal of Korean Society of Water and Wastewater
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    • v.30 no.6
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    • pp.707-714
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    • 2016
  • In order to prevent secondary pollution of tap water, corrosion characteristics are investigated, and corrosion index are calculated using LI and LR to manage corrosiveness. As targeted water treatment plants from 2014 (July, once) to 2015 (July and October, 2 times), 70 plants are selected by making a division for each area and water system. (treated water samples, n=240, raw water samples, n=72). In result of pH analysis, treated water was lower than raw water to 7.12, and 7.29, respectively. LI were investigated in the order of Seomjin river, Nakdong river, Han river, Geum river, to -2.08, -1.24, -1.11, -1.10 (at raw water), and -2.18, -1.59, -1.51, -1.35 (at treated water), respectively. In case of water quality goal value (LI = -1) in Japan as control of corrosiveness, management object was investigated about 83.3%.

A Study on the Determinants of Pro-Environmental Attitude and Water Consumption of Urban Households (도시 가구의 환경 친화적인 태도와 물 소비에 관한 연구)

  • 이경희
    • Journal of the Korean Home Economics Association
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    • v.41 no.3
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    • pp.93-111
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    • 2003
  • This study aimed to examine the water consumption of urban households according to pro-environmental attitude for environmental protection. In contrast to preview studies, this study purposed to include various related independent variables, motive to environmental behavior, in special, in the model, and suggest informative data for research, education and strategies related to environmental protection. The data were from 665 housewives living in five urban areas. For the analysis of data, frequencies, means, percentages, GLM analysis, DMR test and Chi-square test were used. The main results of this study were as follows; 1. The respondents held high pro-environmental attitude that pro-environmental behaviors are important to protect environment. The pro-environmental attitude among the respondents were statistically different from the independent variables : spouse's occupation, living area, help of housekeeper, knowledge about environmental protection, convenience to check water consumption, and perception of voluntary conservative behavior among neighborhood 2. There were great difference on water consumption among respondents. The significant independent variables to have effects on water consumption were different between water consumption per person and higher/lower average water consumption. The relationships of pro-environmental attitude and motive to pro-environmental behavior with two water consumption as dependent variables were unique. Also, living areas and knowledge about environment protection were consistently important to explain the difference of water consumption.

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.

Waterborne viruses in drinking water in Korea: survey 1999 for enteric virus contamination in treated water and its source water

  • Rhie KT;Yoon JD;Chung HM;Kim HS;Jeong YS
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • 2001.05a
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    • pp.142-142
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    • 2001
  • A national survey for enteric virus contamination in treated water and its source water was performed from March to November 1999. The water samples were subjected to virus filtration at the major water plants producing over 10$^5$ tons treated water per day. Twenty surveyed sites encompass most of heavily populated residential area except for Seoul and Pusan. (omitted)

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