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  • Title/Summary/Keyword: ground water pollution

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Use of Anionic Surfactants To Modify Soil Surface to Retard Migration of Hydrophobic Organic Compounds (음이온 계면활성제를 이용한 유기오염물질 고정화 방안에 관한 연구)

  • 박인선;조윤경;박재우
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2000.05a
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    • pp.129-132
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    • 2000
  • In this research, we proposed the immobilization zone where the organic contaminant would be fixed, so that ground water could be prevented from the organic contaminants. The surfactant was adsorbed on the soil particles and the organic contaminants were partitioned into the hydrophobic tails of the surfactant in the immobilization zone. Surfactants with different molecular structures-SDDBS (sodium dodecylbenzenesulfonic acid), MADS (monoalkylated disulfonated diphenyl oxide), DADS (dialkylated disulfonated diphenyl oxide) - were used in this study. Up to the present, the research on the immolization simulated the saturated condition. But many site contaminated with organic contaminants and the zones where immobilization would be applied are unsaturated. In this research, in order to investigate the behaviors of surfactants and organic contaminants in unsaturated condition, the unsaturated columns were experimented, and their results were compared with the saturated case.

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Composting of Agricultural, Livestock and Other Wastes for Farmland Utilization -Present Situation and Future- (호기성퇴비화(好氣性堆肥化)에 의한 농축산(農畜産) 및 기타폐엽물(其他廃葉物)의 녹농지리용(綠農地利用) -현상(現狀)과 장래(將來)-)

  • Hong, J.H.
    • Journal of Biosystems Engineering
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    • v.13 no.3
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    • pp.81-90
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    • 1988
  • Agricultural and municipal wastes arc serious nuisance. in Korea. Disposal of these wastes by land application, incineration or burial have created serious environmental problems such as air pollution and ground water contamination. Uncomposted waste materials are also potential sources of plant and soil pathogens. As available sites for waste burial become more difficult to find and air quality standards for incineration become stricter, composting as a method for treating solid wastes will become more attractive. This article discussed the recent topics on composting to further develop a rational strategy. The future of composting is developed based on the interacting factors of the price of energy and fertilizer, public policy, economic considerations, and biotechnology.

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The Effectiveness of a Child-Care Centers' Based Parent Education Program on Environmental Preservation (유아교육기관의 환경보전 부모교육프로그램 효과연구)

  • Choi, Kyung Sun;Cha, Mi Young
    • Korean Journal of Child Studies
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    • v.25 no.4
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    • pp.177-190
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    • 2004
  • Training for mothers and children first included information on water, ground, and air pollution, saving energy, and reducing trash. In the second phase, the family followed steps outlined in an environmental preservation guidebook. The experiment was of 16 weeks duration, conducted with 120 subjects, comprised of sixty 4-year-old children and their mothers. Measures included environmental preservation knowledge and the actual practice of environmental preservation on the part of the subjects. Mothers performed self-evaluations while teachers measured the children. SPSS was used for data collection and analysis. The results of this study indicate that the program increased perceptions on environmental preservation and the actual practice of the experimental group. The program application also resulted in meaningful co-relationships between perceptions and practice and between mothers and their children.

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Investigation of Soil Pollution Status for Railroad Depot (철도 차량기지의 토양오염 실태 조사)

  • Oa, Seong-Wook;Lee, Tae-Gyu
    • Journal of the Korean Society for Railway
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    • v.12 no.5
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    • pp.788-792
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    • 2009
  • Railroad is well known for eco-friendly transportation system. But, for past few decades, there might be happened many contamination acts in railway facility sites. Industrial and municipal solid wastes produced to maintain and fix trains were dumped to underground of railroad depot area. To develop and reconstruct this area, we should remediate the contaminated soil and ground water. This study was conducted to evaluate the soil pollution status of railroad depot and propose the optimum remediation processes. Our investigation showed that main pollutants sources were TPH and some heavy metals from the dump site. The surveying results for the soil under rail track and crossing nose areas showed TPH contamination from crossing nose area causing lubricant agent. It could be use and rehabilitate the railroad facility areas to an intended purpose with an application of well designed in-situ and ex-situ remediation processes.

Environment isotope aided studies on river water and ground water interaction in the Han River basin (동위원소를 이용한 한강유역의 지하수와 지표수의 연관성에 관한 연구)

  • 안종성;김재성
    • Water for future
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    • v.16 no.4
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    • pp.245-252
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    • 1983
  • Recently river water pollution in Korea is given rise to serious problem in aspect of crop production, drinking well, water contamination and etc. Under these urgent situations, it is prime importance to protect water resources from pollutants. An environmental isotope survey of the groundwater form the shallow alluvial and the underlying crystalline rock aquifer of the Han River Basin has been undertaken, Analysis of the data has I) confirmed the hypothesis that the groundwater from the metropolitan area is recharged from the river whereas that form the non-urbanized region of the Basin is replenished by the infiltrating precipitation; ii) shown that crystalline rock aquifers are recharged by the ground water form the overlying alluvium. Old groundwater is a group of wells with tritium values in the range of 0 to 2 TU. These low values indicate that the water sampled was recharged much ealier, at least a few decades, than the other groundwater samples of higher tritium content. The low values in this region may, in fact, reflect the effect of the impermeable clay layers which impede infilteration from the surface. Stable isotope evidence confirmed that a recharge in the karst area occurs at a significantly greater elevation than that to the alluvial aquifer. An analysis of the tritium level collected over an annual cycle suggests that the residence time of groundwater is probably not more than a few months. There does not appear to be any correlation between the trace level of Zn, Mn and Pb in the groundwater and the mechanism of the recharge.

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An Analysis of the Correspondence between Environmental Damage and the Subsidy in the Vicinity of a Landfill in the Seoul Methropolitan Area (수도권매립지 주변의 환경피해와 주민지원금 간의 상응성 분석)

  • Kang, Heechan
    • Environmental and Resource Economics Review
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    • v.30 no.3
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    • pp.365-393
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    • 2021
  • Using the Choice Experiment Method, this paper identified whether subsidy to the household around landfil in Seoul metropolitan area is being provided corresponding to the scale of the environmental damage. Since 2001, the subsidy program has been operating for nearly 20 years to compensate for various environmental damage (foul odor, noise, air pollution, water pollution, etc.) from landfill site in the metropolitan area, but it is not clear on what ground the subsidy is allocated. This paper estimated the marginal WTP by attribute (odor, noise, air pollution, and water pollution) based on mixed logit model and compared them with current subsidy level per household in each town. As a result of the comparison, it was found that the subsidy for each town was not allocated in proportion to the amount of the marginal WTP for each household in the corresponding town. In addition, this paper constructs a level-by-level scenario for environmental improvement attributes and compares economic benefits and current subsidy levels. As a result, the current subsidy level is insufficient compared to the level at which environmental damage is completely eliminated, but excessive subsidy is allocated compared to partial improvement levels.

Performance Evaluation of Soil Media for Water Quality Purification at LID Application (분산형 빗물관리시설 적용을 위한 수질정화기능 여재 성능 평가)

  • Park, Chan Gi;Kim, Chun Soo;Kim, Hwang Hee;Yoo, Sung-Yeol;Jeon, Ji Hong
    • Journal of The Korean Society of Agricultural Engineers
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    • v.56 no.6
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    • pp.85-91
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    • 2014
  • In this study, the water quality purification of new medias which were NPS media, hyugato, mineral stone, charcoal for applying soil media of Integrated Management Practices (IMPs) of Low Impact Development (LID) were evaluated. The influent concentrations of COD, T-N, and T-P were 117.8 mg/L, 17.1 mg/L, and 2.062 mg/L, respectively. The infiltration capacities of NPS media, hyugoto, mineral stone, charcoal, and gravel were 7.1×10m/s, 7.3×105m/s, 7.9×105m/s, 6.0×105m/s, respectively. All media meet criteria of infiltration capacity as surface soil layer at IMPs which is over 1.0×105m/s. Maximum removal rates of COD, T-N, and T-P occurred at Charcoal with 98 % of COD removal rate, NPS with 78 % of T-N removal rate, and hyugato with 75 % fo T-P removal rate, respectively. For more high removal efficiency of all water quality item, the mixed media which is 4.5(NPS media): 1(charcoal) : 4.5 (hyugato) as volume ratio was evaluated. The infiltration capacity of mixed media was 7.9×105m/s and met the criteria of infiltration as surface soil layer. The water quality removal efficiencies of mixed media were very high with showing 70 % for COD, 85 % for T-N, and 71 % for T-P. The mixed media could purify the water quality of surface runoff and was recommended to used at the LID site of ground water quality problem.

Characteristic of organic/inorganic composite formed grounding resistance lowering agents (유/무기 복합재료형 접지저감제의 특성)

  • Kim, Jang-Wook;Chung, Chul-Hee;Cho, Dae-Hoon
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2004.05a
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    • pp.74-80
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    • 2004
  • Among inorganic materials, it is grounding resistance lower agent of new form that use being strata style clay and makes using water soluble polymer by main material to organic substance. Water soluble polymer chains are dispertion in water because water soluble polymer reacts with water if is done and these discrete polymer chains are inserted to floor of being strata style clay with water. This material that moisture content is very excellent and rate of expansion, electrical conductivity that measure after supplies water of 300wt % as well as is excellent. Can prevent corrosion or electrolytic corrosion of grounding bar securing very environmentally, chemically and pollution of soil. When applied to general grounding rod worker 78 times ground resistance reduction effect of not application.

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A Study on Assessment of Biochar Adsorption Applicability by Physical and Chemical Characterization with Livestock Manure (가축분뇨 Biochar의 물리·화학적 특성분석을 통한 흡착제 적용성 평가 연구)

  • Lee, Youngjin;Oh, Minah;Park, Kyoungjoo;Lee, Jai-young
    • Journal of Soil and Groundwater Environment
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    • v.22 no.2
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    • pp.52-57
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    • 2017
  • As livestock husbandry has broadened from family-scale to enterprise-scale, the number of farming families has decreased in contrast to the increase of the number of livestock, and the amount of livestock manure discharged per household has increased. Livestock manure is difficult to handle and its disposal in the ocean is prohibited. Moreover, facilities that compost and liquefy manure are blamed as sources of soil, ground water, and surface water pollution because the amount of manure generated from husbandry farms causes eutrophication. In this study, livestock manure was utilized as a feedstock of hydrothermal carbonization (HTC) process to produce biochar for use as an environmental medium. The biochar was tested for iodine adsorption capability and its performance was compared with other adsorbent materials.

A study on the development of drainage system for rapid drainage of thermal power plant outdoor coal storage during rainfall and characteristics of discharged water quality (강우시 화력발전소 옥외저탄장 신속한 배수를 위한 배수시스템 개발 및 배출 수질 특성에 관한 연구)

  • Lim, Chang-Min;Kwon, Hyun-Woo;Kim, Young-Min;Cho, Do-Young;Lee, Gun-Cheol
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.11a
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    • pp.189-190
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    • 2022
  • Power plants that produce electricity through thermal power plants mainly store coal in outdoor storage yards. In particular, coal is directly exposed to rainwater during rainfall, including torrential rain. There is no separate drainage facility in the outdoor coal yard, and coal is simply stored on the ground. Accordingly, during rainfall, coal dust flows down by rainwater, and a large amount of rainwater that is not drained overflows the outdoor coal yard, overflowing the surrounding facilities and causing environmental pollution. Therefore, in this study, a drainage system was developed for the rapid drainage of an outdoor coal mine, and the quality of the water was evaluated when rainwater mixed with drainage characteristics and coal dust was discharged through the drainage system.

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