活性炭表面性质对染料废水生化出水深度净化效果的影响

Effects of the surface properties of activated carbon on the advanced purification of the effluent of biochemical treatment from dye wastewater

不同种类活性炭对实际废水的吸附效果差异很大,由此对某大型染料生产厂的染料废水生化出水进行了活性炭吸附实验研究,对具有不同表面性质的活性炭的吸附效果进行了比较,探讨了染料废水生化出水吸附效果与活性炭表面官能团、吸附指标、比表面积之间的关系。结果表明,活性炭的吸附作用不仅与活性炭比表面积有关,还与孔结构有密切关系;染料废水生化出水中的溶解性有机物与活性炭表面碱基团可通过氢键、静电作用在活性炭表面吸附。

The adsorptive effects of different kinds of activated carbon on actual wastewater are greatly different. The biochemical effluent from a large-scale dyestuff production plant has been studied by activated carbon adsorption. The adsorptive efficacies of activated carbon with different surface properties are compared. The relationship be- tween the adsorptive efficacy of biochemical effluent from dye wastewater and the activated carbon functional group, adsorption indexes, specific surface area are discussed. The results show that activated carbon related to the specific surface area of activated carbon, but also is closely related to porous structure. The soluble or- ganisms of biochemical effluent from dye wastewater and the activated carbon surface alkaline functional group can be adsorbed on activate carbon surface via hydrogen bond and electrostatic interaction.