• Title/Summary/Keyword: organic pollutants

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Treatment of non-degrable Organic Pollutants in Aqueous by ultrasonic irradiation (초음파에 의한 수중의 난분해성 오염물질 처리)

  • 손종열;모세영;손진석
    • Journal of environmental and Sanitary engineering
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    • v.10 no.1
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    • pp.76-84
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    • 1995
  • This study was performed to examine the factors influenced on the decomposition of nondegradable organic pollutants( Tricholoroethylene,Benzene ) in aqueous by ultrasonic irradiation. The TCE( Tricholoroethylene ) and Benzene are major hazard compounds causing environmental Pollution and not decomposable substances by conventional treatment. The results shows that the oxidation and reduction reaction of ultrasonic Irradiation was formed the H$_{2}$O$_{2}$ , H$^{+}$ and OH$^{-}$ radical, and then theses was decomposed pollutants of TCE and Benzene in aqueous. We were conformed that the ultrasonic irradiation was excellent in removal efficiency of the nondegradable organic substances any other than processes and utilized the treatment of organic compounds in the industrial wastewater. Conclusively, these results suggest that ultrasonic irradiation may be extremely useful for the treatment of wastewater contaminated organic pollutants, which is difficult to treat economically by conventional treatment.

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Separation of Organic Pollutants by Nondispersive Membrane-Solvent Extraction (비분산 막-용매추출에 의한 유기오염물의 분리)

  • 유홍진;한성록
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.5 no.2
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    • pp.174-185
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    • 2004
  • Organic pollutants (Phenol, 2-Chlorophenol, Nitrobenzene) were separated from wastewater by nondispersive membrane solvent extraction, using a microporous hydrophobic hollow fiber module. The system was operated countercurrently and cocurrently with the aqueous phase flowing through the fiber lumens and the solvent flowing through the shell side. The distribution coefficients of several solvents (MIBK, IPAc, Hexane) were examined and MIBK was selected as an extracting solvent. Separation efficiency of countercurrent flow method was better than that of cocurrent flow method. Also, the overall mass transfer coefficients were determined.

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Characteristics and Status of Persistent Organic Pollutants and Heavy Metals in Ambient Air (대기 중 잔류성 유기오염물질과 중금속의 특성과 현황)

  • 김영성
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.2
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    • pp.113-132
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    • 2003
  • In May 2001, the Stockholm Convention on Persistent Organic Pollutants (POPs) for phasing out and eliminating POPs was signed by 90 countries at the Diplomatic Meeting in Stockholm. In 1998, three years before the Convention, the protocols on POPs and heavy metals were adopted by the United Nations Economic Commission for Europe under the Convention on Long-Range Transboundary Air Pollution. Growing attention on POPs and heavy metals during the past 10 years is primarily due to their toxicity in minute quantities. POPs and some metal compounds are even more toxic because of their bioaccumulation potentials associated with a high lipid solubility. Furthermore, owing to their persistence and semi - volatility, they are widely distributed in the environment, traveling great distances on wind and water currents. Recent international cooperation to address POPs and heavy metals has focused on these issues. Long -range transport of those pollutants are particularly concerned since Korea is located downwind of prevailing westerlies from China. In this paper, a review is provided to assess the properties, sources, emissions, and atmospheric concentrations on POPs and heavy metals.

Factors to be Considered in Management and Control of Persistent Organic Pollutants (잔류성 유기오염물질의 관리와 제어에서 고려하여야 할 인자들)

  • Ghim, Young-Sung
    • Journal of Korean Society for Atmospheric Environment
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    • v.22 no.3
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    • pp.393-398
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    • 2006
  • As ratification of the Stockholm Convention to eliminate or reduce the release of persistent organic pollutants (POPs) into the environment draws near, the Government and industries are actively developing appropriate management and control measures. However, considerable work is needed in order to clarify vast uncertainties imposed in management and control of POPs while handling POPs is extremely difficult because of their toxicity and low levels in the environment. In this note, some major factors to be considered for effective management and control of POPs are reviewed on the basis of recent findings.

A Study on the Characteristic Trace Organic Pollutants in the Industrial Wastewater (산업폐수중 미량유기오염물질 배출 특성)

  • Chung, Y.H.;Kim, S.C.;Shin, S.K.;Kang, I.G.;Lee, J.I.;Lee, W.S.;Lee, J.B.
    • Analytical Science and Technology
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    • v.11 no.1
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    • pp.62-72
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    • 1998
  • This study was performed to characterize the trace organic pollutants in the industrial wastewater and to establish the database of the trace organic pollutants. The four manufacturing industries, which are refined petroleum, industrial chemicals, rubber & plastics and fabricated metals, were surveyed. The wastewater and discharging water of these 30 factories are analyzed to characterize the trace organic pollutants. In industrial chemicals, the kinds of products and organic pollutants are very various. Therefore to select the characteristic organic pollutants in this categories are also very difficult. In industrial chemicals, the gas chromatograpic peak patterns of wastewater are represented the various type according to their products, therefore the typical patterns of the characteristic organic pollutants could not be obtained because the kinds of manufactured goods and organic pollutants are very various. In refined petroleum, the effluent is discharged in the distillatory process of atmosphere pressure and contained the saturated hydrocarbons, phenol compounds, benzene compounds and naphtalene compounds. The saturated hydrocarbons peaks from $C_{15}$ to $C_{35}$ are represented the typical oil patterns by the uniform intervals therefore the peak can be easily distinguished. In rubber & plastics, the wastewater is discharged in the washing process which contains the additives. The problem of wastewater is not serious because the manufacturing process is not produced the effluent or the produced cooling water is recycled in that process.

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The distribution characteristics of persistent organic pollutants in incineration residues at solid waste incinerators (소각시설 소각재의 잔류성 유기오염 물질 분포특성)

  • Kim, Jong-Hyang;Lee, Bang-Hee;Baek, Sung-Bok;Lee, In-A;Lee, Sang-Hee;Park, Kyung-Ho;Kim, Hyun
    • Analytical Science and Technology
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    • v.22 no.2
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    • pp.119-127
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    • 2009
  • This study was carried out to investigate the distribution characteristics of persistent organic pollutants in incineration residues at industrial waste incinerators and municipal solid waste incinerators, which were analyzed by the official analytical method for the endocrine disrupting chemicals and the waste. Seven of 12 persistent organic pollutants were quantitatively analyzed by GC-MSD (SIM-mode). Hexachlorobenzene was detected in 21 samples among 44 incineration residues. The level of hexachlorobenzene was 0.132-8.138 ng/g in incineration residues, 0.195-5.765 ng/g in fly ash at industrial waste incinerators, 0.270-1.828 ng/g in bottom ash and 0.154-50.643 ng/g in fly ash at municipal solid waste incinerators, respectively.

A Study on the Distribution Property of Organic Pollutants in Effluents from Domestic Sewage Treatment Plants Throughout Youngsan River (영산강유역 생활하수처리장 방류수에서의 유기오염물질 분포특성에 관한 연구)

  • Lee, Moon-Hee;Lee, Jong-Sam;Han, Sang-Kuk
    • Journal of Korean Society of Environmental Engineers
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    • v.27 no.12
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    • pp.1332-1339
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    • 2005
  • The purpose of this study is to the distributive property of organic pollutants in effluents of domestic sewage treatment plants around Youngsan River using simultaneous analysis method of 310 chemicals. The numerous organic pollutants were detected in five sampling sites, and the major chemicals were pesticides, CH type chemicals such as benzenes and polycyclic compounds, ande CHO type chemicals such as phenols and phthalates. About 14 pesticides were detected in the effluent and most of them were found in summer. 1-Chlorobenzen and p-octylphenol were frequently detected in the concentration range of $0.52{\sim}0.61\;{\mu}g/L$ and $0.04{\sim}0.89\;{\mu}g/L$, respectively. Moreover, 18 kinds of endocrine disrupters include diethylphthalate were detected in effluents. From the results of this study, therefore, we confirmed that the pesticides, CH and CHO type chemicals in domestic effluents throughout Youngsan River are required specific regulation.

Air Monitoring of Persistent Organic Pollutants Using Passive Air Samplers (Passive Air Sampler를 이용한 잔류성 유기오염물질의 대기 모니터링)

  • Choi, Sung-Deuk;Chang, Yoon-Seok
    • Journal of Korean Society for Atmospheric Environment
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    • v.21 no.5
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    • pp.481-494
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    • 2005
  • The monitoring of persistent organic pollutants (POPs) in the atmosphere is a basis for the study of the fate of POPs in multimedia environments. Recently, passive air samplers (PASs) for POPs have been developed. In this paper, we deal with the principle, properties, and applications of the PAS. The principle of PAS, which has no pump, is physical sorption of semi-volatile organic chemicals on various sorbent materials. The PAS is much smaller than a high-volume air sampler and does not need electricity. These properties of the PAS make it possible to conduct various-scaled environmental monitoring all over the world including the Arctic and Antarctic, but the major disadvantage of PAS is its long sampling periods up to 2 years. To date, four kinds of PAS have been developed: polyurethane foam (PUF), polymer-coated glass (POG), semi-permeable membrane devices (SPMDs), and XAD resin-based PAS. Among them, SPMDs have been commercialized and are most widely used now. Meanwhile, the POPs emitted from China have a large potential to influence the levels and fates of POPs in Korea. Since characteristics of PAS are quite useful to monitor long-range transport of POPs, the use of PAS is highly recommended.

Actual Conditions and Alternative Materials for the Pesticides containing Persistent Organic Pollutants in South Korea

  • Lim, Young-Wook;Kim, Ho-Hyun;Lee, Jun-Sang;Roh, Young-Man;Lee, Gee-Young;Jung, Hae-Woong;Lee, Jae-Young
    • Korean Journal of Environmental Agriculture
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    • v.27 no.3
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    • pp.285-291
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    • 2008
  • A global binding agreement was adopted with the leading of United Nations Environment Program (UNEP) on May 22, 2001 in Stockholm to regulate the production and distribution on persistent organic pollutants (POPs). The agreement took effectuation with the ratification of 59 countries from the approval of 151 countries on May 17, 2004. After the approval on October 4, 2001, South Korea performed systematical investigation on POP-related substances such as chlordane, dichloro diphenyl trichloroethane (DDT), hexachlorobenzenes (HCB), heptachlor, polychlorinated biphenyls (PCBs) to get ready for the ratification of the convention with country-specific exemption. The domestic distributions of those chemical substances have been officially prohibited since the late 1960s to the early 1980s. Although there were occasional reports for the detection of some of those chemical substances, those performed minute signification in their existence in the environment. A series of investigation with documentary examination and fact-finding survey showed the possibility for the ratification on the convention without country-specific exemption.