Study on Denitrification Characteristics of a Nitrogen Removal Composite Microbial Agent
In order to improve the efficiency of denitrification in wastewater treatment,the denitrifying strains N1,N9 and N10,which have been screened out in the laboratory,were prepared into a composite microbial agent.The influence of different temperatures,carbon-to-nitrogen ratios(C/N),and carbon source types on the growth and denitrification characteristics of the composite microbial agent was investigated,showing significant practical value.The results showed that 92.61％nitrate nitrogen,60.02％total nitrogen,and 58.48％chemical oxygen demand could be removed by the compound microbial agent under the conditions of 30 ℃,C/N ratio of 10,and soluble starch as the carbon source after 48 h.Moreover,the denitrification effect was substantial within the C/N ratio range of 2 to 10,indicating that the composite denitrification microbial agent could have application prospect in the denitrification process of low C/N ratio wastewater.
composite microbial agentdenitrificationcarbon-to-nitrogen ratio
NETL
NSTL
万方数据
维普
