Research on degradation of Nitrobenzene by artificial enrichment bioaugmentation in the source water

Through combination-carrier AP, using the artificial enrichment and accumulation microorganisms on degradation of Persistent Organic Pollutants (POPs) was researched in the Meiliang Bay of Lake Taihu source water. While density of combination-carrier AP was 13.1%, the pilot showed that the effect of degradation of Nitrobenzene was increased as HRT extended. Under the condition of Hydraulic Retention Time (HRT) were 7d, the influent concentration of nitrobenzene was 0.219μg/L. The degradation rate of nitrobenzene reached 100%. One effective stain bacillus sp. which can highly degraded nitrobenzene was obtained by screening, isolating and screening the strain from static degradation of nitrobenzene. The stain didn´t feed by nitrobenzene as sole resource of carbon and energy. When dosage of glucose was 20mg/L, degradation rate of nitrobenzene arrived 100%. The reaction characteristics of degradation of nitrobenzene satisfied one level reaction kinetics model.