Contribution rate of water-soluble polyacrylamide´s COD and research of degradation bacterium´s degradation behavior

K kind of polyacrylamide´s degradation bacterium is separated from oil gather standing in Shengli oilfield by Hungate technology. Through appraisal result of Form, Physiology and biochemistry and Molecular biology, Bacterial strain is G-, Short sindbis, Sporeless,The optimal pH is 8.0; The optimal environment is neutral partial alkaline; the optimum temperature is 38*C,the bacterial strains is eosinphilic temperature bacteria, and facultative anaerobic. Similarity is 99% between the bacterial strain and Clostridium cylindrosporum(CCY18179). We name the bacterial strain as Clostridium HPAM bacterium H4. The results show that : the different molecular weight of HAPM´s COD Contribution rate is lined with concentration.From IR, we can see that the bonds of N-C have broken after biodegradation, viscosity of polymer decreased to 97.26% during 3 days. The bacterial strains have the better biodegradation and off viscosity function.