粉煤灰对印染废水的吸附处理研究

研究了粉煤灰对印染废水吸附脱色处理效果,确定了最佳脱色条件和穿透曲线的特征,并探讨了其对印染废水CODcr的去除率。结果表明：对色度都为700倍、CODcr分别为664.2 mg/L、947.1 mg/L的红、蓝色印染废水,粉煤灰处理的最佳用量分别为18 g和16 g,最佳吸附接触时间分别为2.0 h和2.5 h,最佳pH5－7,穿透体积分别为115 mL和120 mL,脱色率均可达到95（以上;CODcr的去除率分别为81.5%和41.1%。

Study on the Adsorption Treatment of Printing and Dyeing Wastewater by Fly Ash

This paper studies on adsorption treatment by fly ash in printing and dyeing wastewater and confirms the best adsorption condition and penetration curve,.and discusses the removal efficiency of the CODcr in wastewater.The results show that the best dosage of the fly ash is respectively 18 g and 16 g,the best adsorption contact time is respectively 2.0 h and 2.5 h,the best pH value is 5~7,the penetration volume is respectively 115 mL and 120 mL for disposing red and blue printing and dyeing wastewater of whi...