中文摘要：

吡啶是焦化废水中较为典型的含氮杂环化合物,难以被生物降解。通过研究吡啶的缺氧生物降解特性,并对其降解产物进行鉴定,以期为实际生产提供理论依据和为今后进一步研究做出铺垫。结果表明,吡啶在本实验条件下的最佳降解浓度为80 mg·L^-1,对于后期测定降解中间产物,该浓度和其降解周期均较为合适;戊二醛为吡啶在缺氧反硝化降解过程中的一个重要中间产物,其浓度在反应进行32 h时积累达到最大值。在上述实验基础上,在底物中加入40 mg·L^-1苯酚,其对吡啶的降解产生抑制作用,戊二醛浓度最大值出现在反应进行40 h处,由此推断苯酚对吡啶降解的抑制作用可能产生于吡啶开环脱氮阶段。

英文摘要：

Pyridine is a typical nitrogen heterocyclic compound found in coking wastewater,and it is difficult to biodegrade. In this study,the characteristics of pyridine biodegradation were studied. The degraded product was identified,in order to provide a theoretical basis for its application and to create a foundation for the further study. The results show that the optimum concentration of pyridine for degradation under the experimental conditions,was 80 mg·L^-1,which is appropriate for the later determination of photodegraded product. Glutaraldehyde is an important intermediate product of pyridine from denitrifying degradation under anoxic condition,and the maximum concentration of glutaraldehyde occurred at 32 h. Phenol（ 40 mg·L^-1） was added to the culture,which caused inhibition of the degradation of pyridine. The maximum concentration of glutaraldehyde occurred at 40 h. It could be inferred that the inhibition of phenol during pyridine degradation takes place in the ring fusion stage.