毛巾印染废水二级处理后的脱色研究

DECOLORIZATiON OF DYEING WASTEWATER FOLLOWING SECONDARY TREATMENT

印染废水常以生物法处理,但出水难以达到排放标准。特别是由水溶性染料造成的色度.二级处理后仍严重带色。本文就过氧化氢、铁触媒对印染废水的脱色处理,进行实验研究,提出了脱色的工艺流程及有关工艺参数。结果表明,该方法作为二级处理后的脱色工艺,脱色率可达80％以上,出水色度符合排放要求。处理费用为0.15元/吨左右。设备较简单,便于广泛应用。

True color removal efficiency of biological treatment processes is poor, and the color of effluent is generally above discharge standard. Experiment of decolorization of biological treatment effluent of dyeing wastewater by hydrogen peroxide used iron as catalyst had been done and a true color removal rate of 80% was obtained, and the decolorized effluent could meet the discharge standard.