摘要：

采用电解Fenton法处理阻燃剂生产中产生的高浓度有机废水(COD_Cr=17108mg/L),其适宜操作条件是:pH=2.0～2.6；电流密度10.8～14.3A/dm²；H₂O₂起始浓度27～42mmol/L；FeSO₄起始质量浓度660～990mg/L；；电解5h。COD_Cr综合去除率达98.34%,试剂、能量综合利用率136.1%,它既利用了电氧化、电气浮作用,又利用了Fenton试剂的强氧化作用和化学絮凝作用。色质联用分析显示废水处理后的降解产物主要是无毒害的醋酸。

关键词: 阻燃剂废水, 电解, Fenton试剂, 过氧化氢

Abstract:

The highly concentrated organic wastewater of flame retardants is treated by electro-Fenton method(COD_Cr = 17 108 mg/L). The optimal operat ion conditions include the following factors, pH=2.0～2.6, the current density is 10.8 ～ 14.3 A/dm², the original concentration of H₂O₂ is 27 ～ 42 mmol/L, the original mass concentration of FeSO₄ is 660 ～ 990 mg/L, the electrolyt ic time is 5 h. The COD_Cr removal efficiency is 98.34%,and utilization ratio of reagent and energy is 136.1%. The method not only utilizes the electrolytic oxi dation and electrolytic floatation, but also utilizes strong oxidation and chem istry flocculation function of Fenton reagent. GC - MS shows degradation produc t of wastewater which is treated by the above-mentioned method mainly is harmles s acetic acid.

Key words: flame retardants wastewater, electrolysis, Fenton reagent, hydrogen peroxide

中图分类号: 

• X703.1