• Title/Summary/Keyword: 염색폐수

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Adsorption of Textile Wastewater on Sawdust (톱밥에 의한 염색폐수의 흡착처리)

  • Kim, Tak-Hyun;Park, Chul-Hwan;Kim, Sang-Yong
    • Journal of Korean Society of Environmental Engineers
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    • v.30 no.4
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    • pp.439-445
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    • 2008

  • Sawdust is considered one of the cheapest and abundantly available adsorbents, and it is not necessary to regenerate. The spent sawdust can be incinerated or reused as a fuel. The sawdust adsorption can be applied to the removal of color and metal cations from the wastewater. The aim of this study was to evaluate the adsorptive capacities of sawdust with respect to color, COD, SS, turbidity, metal cation from textile wastewater. Langmuir, Freundlich, BET and Sips adsorption isotherm were obtained for the sawdust adsorption of Fe(III). The effects of particle size and amount of sawdust on the adsorption of Fe(III) were also studied. COD, SS, color, turbidity and Fe(III) removal efficiencies were examined at the continuous fixed-bed adsorption test. It was showed the removal efficiencies of SS 50.0%, Fe(III) 25.0%, turbidity 79.4%, color 48.6% and COD 50.9%. In addition, the changes of surface structure between before and after adsorption were investigated through SEM analysis. It is confirmed that the waste sawdust can be successfully used as an adsorbent for wastewater treatment.

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효소정련이 염색에 미치는 영향

  • 김주혜;최은경;김수연;이현경
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2003.04a
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    • pp.72-77
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    • 2003

  • 섬유산업에의 효소의 이용은 최근 들어 급속히 증가하고 있는 추세이다. 염색폐수의 처리 및 각종 섬유처리에의 효소의 이용만을 다루는 학회(Biotechnology in the Textile Industry)가 전 세계에서 모여든 학자들로 2회째 성황을 이루었으며, 섬유학회중 가장 인지도가 높은 AATCC 학회에는 이 분야의 토픽만을 모아서 발표하는 분과를 개설한 것이 이 사실을 뒷받침한다. (중략)

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Chronic Toxicities of Effluents from Dye Industry using Daphnia magna (물벼룩을 이용한 일부 염색폐수의 만성 수질독성 특성 연구)

  • Kim Younghee;Lee Minjung;Eo Soomi;Yoo Namjong;Lee Hongkeun;Choi Kyungho
    • Korean Journal of Environmental Biology
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    • v.23 no.2 s.58
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    • pp.146-151
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    • 2005

  • Recent studies indicated the utility of whole effluent assessment as a measure to control discharge of toxic effluents to receiving water in Korea. However, most studies have been focussed on acute lethal effects of toxic wastewater with little consideration of chronic sublethal impacts which are of growing concern in protecting aquatic ecosystem. We conducted acute and chronic toxicity tests with effluents discharged from five different dyeing plants in Gyeong-gi province using a marine bacterium Vibrio fischeri and a freshwater macroinvertebrate Daphnia magna to demonstrate the importance of assessing chronic sublethal effects. Various levels of acute and chronic toxicities were observed in many samples tested in this study. In 21-d chronic toxicity tests using D. magna all samples showed effects on reproduction and growth. Notable mortalities were also noted in three out of five effluents. The result of the Microtox assay indicated that acute microbial toxicity existed in effluents from two out of five plants and acute daphnid toxicity was observed in only one effluent. The result of this study clearly suggests chronic toxicity tests are more suitable to assess biological effects of effluents because it was shown from this study that even an effluent with no acute toxicity could cause chronically lethal and/or sublethal adverse effects on aquatic biota which may affect the population dynamics in aquatic ecosystem.

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