染料生产废水处理工艺探讨

Study on Treatment of Dye-producing Wastewater

染料生产废水可生化性差 ,好氧生物处理不能使出水达到 2 0 0mg·L-1的排放标准 .通过测定废水的耗氧速率、30天CODCr降解以及进行生化、化学混凝沉淀、化学氧化及活性炭吸附处理研究 ,认为混凝沉淀和氧化不可能有效去除有机物 ,活性炭可以大幅度降低出水有机物浓度 ,但成本及再生费用较高 .对该染料废水进行预处理后 ,再进行好氧处理可以有效去除有机物 ,使出水符合排放标准 。

Dye-producing wastewater is difficult to bio-degradated.The effluent COD Cr concentrations could not reach the discharge standard of 200 mg·L -1 only with pure aerobic treatment process.The oxygenic consuming rate and COD 30 of the wastewater were determined and some other tests,such as biological treatment,chemical coagulation and oxidation,and GAC adsorption,were studied in this paper.Based on the above studies we proposed a combined process to ensure the effluent to reach the discharge standard.Pollutants could be removed by using bio-chemical treatment removing most of the bio-degradable pollutant and then using GAC adsorption to remove the residual organics in the advised process.