摘要：

炼化污水中难降解污染物的强化去除是水处理的研究热点。考察了高效生物催化技术对炼化污水深度处理的效果。结果表明：高效生物反应器启动一周后可成功挂膜，载体附着高效特种微生物，可有效去除污水中的难降解有机物，出水COD在30 mg/L以下，COD去除率为60%~71%。反应器抗冲击能力强，进水COD约为125 mg/L时，出水COD仍低于30 mg/L，满足《城镇污水处理厂水污染物排放标准》（GB 18918—2002）A类标准。载体层不易堵塞，反洗频率约3月/次，操作简便，自动化程度高。反应器处理污水耗电量为0.32~0.48 kW·h/m³，电耗成本为0.20~0.29 元/m³，运行成本远低于物化方法，对于高盐、难降解COD污水有很好的适用性。

关键词: 生物催化, 难降解污水, 达标排放

Abstract:

The enhanced removal of refractory pollutants from refinery wastewater is a research hotpot in water treatment. The treatment of refinery wastewater by the advanced biocatalytic technology was investigated. The results showed that the biofilm of the advanced biological reactor could grow well after one week start⁃up. The pollutants could be degraded effectively by the special microorganism attached on supporter. The reactor had strong impact resistance. When the COD concentration in the effluent was lower than 30 mg/L，and COD removal rate was 60%-71%. When COD concentration in the influent was as high as 125 mg/L，the COD concentration in the effluent could still keep lower than 30 mg/L，which met class A standard of “Urban sewage treatment plant water pollutant discharge standard”（GB 18918—2002）. The bio⁃carrier of the reactor was not easily blocked and could be backflushed once every three months. The reactor was easy to operate with high degree of automation. The power consumption of reactor was 0.32-0.48 kW·h/m³，and the electronic cost was 0.20-0.29 yuan/m³. The economic cost of the advanced biological reactor was much lower than the pysial⁃chemical ways. It could be promoted in the treatment wastewater with high salt and high refractory COD.

Key words: biological catalyst, refractory pollutants, standard discharge

中图分类号: 

• X703.1