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HWAHAK KONGHAK,
Vol.37, No.3, 482-486, 1999
Vol.37, No.3, 482-486, 1999
계면활성제를 함유한 산성염료폐수의 응집·탈색에 관한 연구
A Study on Coagulation and Decolorization of Acid Dye Wastewater Containing Surfactants
염료폐수의 응집탈색 처리에서 폐수에 함유되어 있는 각종 계면활성제가 미치는 영향을 조사하였다. 무기응집제를 사용한 산성염료의 응집탈색 실험에서 비이온계면활성제를 함유한 습윤견뢰형 산성염료의 응집탈색률이 현저히 감소되었다. 무기응집제와 고분자응결제를 병용한 산성염료의 응집탈색 처리효율은 무기응집제 단독으로 처리한 경우에 비하여 대부분의 염료는 95% 이상으로 응집탈색률이 증진되었다. 무기응집제와 고분자응결제를 병용하여 응집탈색 처리를 할 경우, nonylphenol계 비이온계면활성제와 음이온계면활성제는 산성염료의 응집탈색에 영향을 미치지 않았다. 그러나 alkylamine계 비이온계면활성제는 염료의 응집탈색률을 현저히 감소시켰으며, alkylamine계 계면활성제의 EO부가 몰수가 작을수록 응집탈색률 감소 현상이 심화되었다.
The effect of various surfactants used in textile dyeing processes on coagulation treatment of dying wastewater was investigated. When alum was used as a coagulant, the color removal rate of milling-type acid dyes was significantly decreased by the presence of nonionic surfactants. The combined use of inorganic and organic coagulants achieved an excellent color removal rate of more than 95 % for the most of acid dyes tested in this study. In the combined coagulants treatment, nonylphenol ether nonionic surfactants and anionic surfactants had no significant effect on the color removal efficiency. However, poly(oxyethylene) alkylamine nonionic surfactants decreased remarkably the color removal rate. The decrease of the color removal rate was more severe by the surfactant having smaller number of ethylene oxide group.
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