The Research Of Biochemical Degradation Characteristics Of Nitrobenzene Pollution In Weihe

Serious environmental pollution in Weihe River water, water quality monitoring datashow that in recent years almost all Class V water body; nitrobenzene organic toxicsubstances, density greater than water, into the water to sink to the bottom, can remainunchanged for a long time, causing water pollution continues to for a long time, the middlereaches of the Weihe River in Xi’an marsh sediments at the study to be of common concern tonitrobenzene is an organic pollutant, domesticated sediment microbial screening of strainsresistant to nitrobenzene, respectively, to the Weihe Riversediment, purebred predominantstrains, iron, and the predominant strains of degradation of nitrobenzene, obtained the optimalconditions of the various systems in the degradation of nitrobenzene; and qualitative analysis,biochemical degradation characteristics of the study of nitrobenzene.Through domestication filter out micro-organisms resistant to nitrobenzene, degradationexperimental Weihe River sediment microorganisms in the C_NB=0.5mg/L, pH=7, T=30℃, thebest degradation of nitrobenzene rate is75.35%. The number of3bacillus to conditionsfor:C_NB=0.5mg/L, pH=7, T=30℃, the best removal efficiency of95.62%. Advantage strainsand iron system in Fe=0.006g, C_NB=0.5mg/L, pH=8, T=30℃, the highest degradationrate,removal of the best removal efficiency of99.4%.Clear of nitrobenzene biochemicaldegradation characteristics according to the product of pure microbial degradation ofnitrobenzene detected, suggesting that the nitrobenzene degradation pathway, has a certaintheoretical and practical significance for processing of nitrobenzene.