摘要：

采用树脂吸附—Fenton试剂氧化组合工艺对某焦化企业产生的高浓度焦化废水进行处理。实验确定的最佳工艺条件：（1）树脂吸附——双柱串联吸附，吸附流量1 BV/h，处理水量20 BV；（2）树脂脱附——脱附剂2 BVNaOH+1 BV H₂O，流量0.5 BV/h，温度为70℃；（3）Fenton试剂氧化——温度40℃，反应时间2 h，按体积比1%投加H₂O₂，投加Fe²⁺为4.03 g/L。实验结果表明：在上述最佳工艺条件下对该废水进行处理，酚类污染物去除率接近100%，COD去除率为74.82%，废水的COD/BOD₅由0.11提高到0.19。

关键词: 焦化废水, 树脂吸附, Fenton试剂

Abstract:

In this study, a combination system including resin adsorption and Fenton reagent oxidation has been applied to the treatment of wastewater from coking plant. The optimal operation conditions are as follows: (1) Resin adsorption, the effluent is adsorbed by a 2-column series at the flux density of 1 BV/h, the disposing volume is 20 BV; (2)The saturated resin is regenerated by 2 BV NaOH+1 BV H₂O at the flux density of 1 BV/h, temperature 70 ℃; (3)Fenton reagent oxidation, the conditions are volume ratio of H₂O₂(30%)1%, Fe²⁺ 4.03 g/L, reaction temperature 40 ℃, reaction time 2 h. It shows that, at the optimal process conditions, the removal efficiency of phenolic contaminant is near 100%, the removal efficiency of COD is up to 74.82%, the biodegradability of effluent is heightened from 0.11 to 0.19.

Key words: wastewater from coking plant, resin adsorption, Fenton reagent

中图分类号: 

• X703.1