摘要：

采用“空气吹脱-硅藻土过滤-Fenton氧化”组合工艺对环氧树脂废水进行深度处理，重点考察预处理方式、不同氧化剂及其工艺条件对废水TOC去除效果的影响。结果表明：废水（TOC 3 000~4 000 mg/L）经预处理后，Fenton氧化工艺优选条件为：初始pH为4左右，双氧水1 200~1 300 mmol/L，Fe²⁺ 12 mmol/L，双氧水和亚铁试剂采用分次滴加法。在此条件下，废水TOC去除率在98%以上，TOC稳定在100 mg/L左右，可作为生产氯气和烧碱的原料，实现了废水资源化利用。

关键词: 高盐废水, 环氧树脂, Fenton试剂

Abstract:

The epoxy resin wastewater containing high salt was deeply treated by the combined process of air stripping-diatomite filtration-Fenton oxidation, and the influence of pretreatment method, different oxidizing agents and process conditions on TOC removal effect was emphatically investigated. The results showed that after pretreatment of wastewater(3 000-4 000 mg/L), the conditions of Fenton reagent oxidation were optimized as the initial pH of 4, the dosage of hydrogen peroxide of 1 200-1 300 mmol/L, and Fe²⁺ of 12 mmol/L, Fenton reagent was added by drops. Under these conditions, the removal rate of wastewater TOC was more than 98%, and TOC was stable at about 100 mg/L, which can be used as raw materials for the production of chlorine gas and caustic soda, thus realizing the resource utilization of wastewater.

Key words: high salt wastewater, epoxy resin, Fenton reagent

中图分类号: 

• X703