Abstract:

One high-efficient degrading strain which took pyridine as only carbon source and nitrogen source was separated and screened from activated sludge of coking effluent of WISCO, the influence of the factors such as pyridine initial concentration, inoculum size, pH value, temperature and metal ion on strain degradation property was studied. The test results showed that this strain had stronger resistance on pyridine, which can be 1 200mg/L. The suitable condition for pyridine degradation was 30℃, pH 7.5 and inoculum size 5%, if suitable Fe2+ was added, the pyridine degradation could be promoted.