Abstract:

Hydrolysis acidification -contact oxidation -micro-electrolysis -membrane bioreactor -reverse osmosis process has been used for advanced treating and reusing printing and dyeing wastewater.The result shows that the process runs steadily with very good efficiency.The conditions of COD_Cr of the pure water effluent in the reverse osmosis system are<10 mg/L,without suspended solid and colorless.The COD_Cr,SS and chroma of the concentrated effluent are 125 mg/L,17 mg/L and 8 times respectively.The water quality of the concentrated water is much better than the Third Class Standard of Integrated Wastewater Discharge （GB 8978-1996） and can discharge into the municipal wastewater pipelines.

Key words: hydrolysis acidification, micro-electrolysis, membrane bioreactor, printing and dyeing wastewater

摘要：

采用水解酸化-接触氧化-微电解-MBR-RO组合工艺深度处理印染废水并回用于生产。实际运行情况表明,该工艺处理效果较好,运行稳定。RO系统出水COD_Cr<10 mg/L,并无悬浮物,无色;浓水COD_Cr、SS、色度分别为125 mg/L、17 mg/L、8倍,浓水出水水质远优于《污水综合排放标准》GB 8978-1996三级标准,直接接入城市污水管网。

关键词: 水解酸化, 微电解, 膜生物反应器, 印染废水

CLC Number: 

• X703.1