污泥活性炭处理亚甲基蓝染料废水的研究

采用污泥活性炭处理亚甲基蓝模拟染料废水,研究了模拟废水初始浓度、污泥活性炭投加量、pH值、水浴吸附时间等因素对染料废水的脱色率和COD去除率的影响,探讨污泥活性炭处理染料废水的适宜工艺条件。实验结果表明:随着染料废水初始浓度的增大,脱色率和COD去除率均表现出下降趋势;随着污泥活性炭投加量的增加,脱色率和COD去除率效果均十分明显;随着模拟废水pH值的增大,其脱色率基本呈现增大趋势,而COD去除率则先增大后减小,当pH在7.6～7.8时,脱色率与COD去除率均出现最大值;在延长水浴时间的同时,脱色率和COD去除率均表现出较好的效果。本实验处理染料废水的适宜条件为:染料废水的初始浓度为2.5mg/L,调节染料废水的pH值7~8,加入0.8g污泥活性炭,30℃条件下2h。

Study on treatment of activated carbon from sewage sludge for methenyl blue dye waste water

Activated carbons from sewage sludge were used to treat methenyl blue waste water.The effects of pH, the amount of activated carbons from sewage sludge and adsorption time on the decoloration and COD removal rates were investigated. The results show that both decoloration and COD removal rates decrease with the content of methenyl blue, increase with the amount of activated carbons from sewage sludge and adsorption time. The effect of pH on the COD removal rates is difficult to be explained. The optimum was at pH=7.6-7.8. The suitable conditions is that the content of methenyl blue waste water is 2.5mg/L, treated by 0.8g activated carbons from sewage sludge at 30℃ and pH 7-8 for 2h.