摘要： 以微电解技术为核心，耦合Fenton氧化-絮凝沉淀工艺对焦化废水进行强化预处理实验。结果表明，在最佳反应条件下，微电解反应对焦化废水COD的去除率达到20.2%，反应后系统Fe²⁺可达到410 mg/L，而耦合Fenton氧化-絮凝沉淀后对COD和挥发酚的去除率平均分别为37%和34%，B/C指标提高了50%，平均达到0.39，有效提高了焦化废水可生化性，但对氨氮去除效果不明显。

关键词: 焦化废水, 预处理, 微电解, Fenton氧化

Abstract: The enhanced pretreatment experiments on coking wastewater have been accomplished by using microelectrolysis as the core,and coupling with Fenton oxidation-flocculation precipitation process. The results show that under the optimal reaction conditions,the removing rate of COD from coking wastewater by micro-electrolysis reaction is 20.2%,and after the reaction,Fe²⁺ in the system could reach 410 mg/L. After coupling with Fenton oxidation-flocculation precipitation,the average removing rates of COD and volatile phenol are 37% and 34%,respectively. The B/C index is increased by 50%,reaching 0.39 averagely. The biodegradability of the coking wastewater is improved effectively. But the removing effect on ammonia nitrogen is not obvious.

Key words: coking wastewater, pretreatment, micro-electrolysis, Fenton

中图分类号: 

• X703.1