污水生物脱氮过程反硝化阶段一氧化二氮生成动力学模型构建

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中图分类号：X703 文献标志码：A

Abstract：Toaccurately simulateand predicttheyieldof nitrous oxideNOinthedenitrficationstageofsewagebiological nitrogen removal process， and realize the precise control of N 2 O emission reduction in the sewage treatment process， basedonthetraditionaldenitrificationtheoryandthe theoretical hypothesisof NOproductioncausedbymicrobialattenuation in denitrification stage，a N2O generate dynamic model in denitrification stage of the biological denitrification process of sewage was constructed by using Activated Sludge Model No.3（ASM3）.The program calculation method of initial value calculation and sensitivity analysis of the N2O generate dynamic model was established by MATLAB software， andthenthe theoretical predictiondataoftheNO generatedynamic modeland the experimentaldataof sequencing batch activated sludge reactor were fitted and analyzed. The results show that the constructed N2O generate dynamic model of the denitrification stage hasgoodsimulationand predictionefectsonthe contents of chemicaloxygen demand，nitrite nitrogen （NO 2 -N），nitrogen（NO 3 -N）， N2O and other components of the sludge reactor，and their coefficients of determination are 0.953，0.925，0.996 and 0.878 respectively.

Keywords：biological denitrification；nitrous oxide；dynamicmodel；denitrificationstage；sequencing batch activated sludge reactor

一氧化二氮 N2O 对全球温室效应的贡献度可达 6%～7% ，是仅次于二氧化碳 CO2 和甲烷 CH4 的全球第三大温室气体，其温室潜能是 CO2 的298倍[1-2]。（剩余10584字）