Abstract:

The monothetic method for the technological conditions of the adsorption of COD_Cr from electroplating wastewater by using activated carbon has been studied. The results indicate that the COD_Cr removing rate by using powdered activated carbon is about 20% under the following conditions： temperature is 25 ℃，pH of wastewater 8，dosage of activated carbon 0.8 g/L，and adsorption time 2 h. The Freundlich isotherm shows that the COD_Cr adsorption capacity from electroplating wastewater by using powdered activated carbon is rather poor.

Key words: electroplating wastewater, powdered activated carbon, adsorption

摘要：

采用单因素法对活性炭吸附电镀废水中COD_Cr的工艺条件进行研究。实验结果表明，温度为25 ℃、pH=8、活性炭投加量为0.8 g/L、吸附时间为2 h 时，粉末活性炭对COD_Cr的去除率在20%左右。Freundlich 吸附等温线表明粉末活性炭对电镀废水中的COD_Cr吸附性能较差。

关键词: 电镀废水, 粉末活性炭, 吸附

CLC Number: 

• X703