氮杂环化合物喹啉在缺氧条件下降解的影响因素

Influence Factors of Nitrogenous Heterocyclic Compound – Quinoline Degradation under Anoxic Conditions

摘要:

通过摇瓶试验研究了缺氧条件下培养驯化污泥缺氧反硝化特性和氮杂环化合物喹啉的去除规律以及pH值、碳氮比和生物铁对喹啉去除的影响，并对喹啉生物降解产物和降解途径进行了测定与分析。结果表明：喹啉的去除主要经过吸附-解吸-降解三步；反应的最佳pH值范围为7-9；碳氮比对喹啉的去除影响不大；生物铁法不能提高喹啉的去除；喹啉可以单独作为碳源和氮源进行生物降解。

Abstract:

The anoxic degradation and removal of nitrogenous heterocyclic compound-quinoline, denitrification of acclimated sludge under anoxic conditions,And the effect of pH,C/N ratio, bio-ferric on degradation of quinoline under anoxic conditions were studied by flask-shaking tests. The microbial degradation products was measured and degradation pathway of quinoline in anoxic condition was analyzed.The result s indicate that quinoline was removed through three steps。They are biosorption- desorption- biodegradation. The optimal range of pH was 7~9. The C/ N ratio was not affect the reduction of quinoline greatly. Bio-ferric process cannot increase the degradation of quinoline, quinoline could used as the sole carbon and nitrogen sources for biodegradation.