This work is a regional survey, which investigated the contained residual dissolved organic matter (DOM) as well as the biotoxicity of the effluents from nine typical full-scale textile plants at Pearl River Delta. The fluorescence regional integration (FRI) analysis showed that the tryptophan-like (II), soluble microbial product-like (IV) and fulvic acid-like substances (III) were the dominant compounds in the DOM. The acute toxicity test showed a toxic effect still remained in most textile effluents, which might attribute to the undegraded dyes or aromatic compounds. Combining with the results of multi-methods, it indicated that the selected nine textile wastewater treatment plants (tWWTPs) all contained some residual micro organic pollutants in their effluents, and the residual benzene-derived products or aromatic amines were probably the toxicity-causing substances. Both ozonization and membrane filtration were capable of further decreasing the content of residual DOM, but membrane filtration was better than ozonization by comprehensively considering the effects of removing DOM and biotoxicity.

Residual micro organic pollutants of the effluent from the typical textile wastewater treatment plants: A regional survey

2019 Spring National Meeting

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