【摘要】 以瓦池污水厂AAO的设计参数构建小试，将污水厂沉砂池出水定量稀释并投加特定化学药剂配制试验进水达到预设的水质，确保实验周期内进水水质稳定。投加等同COD当量的不同类型碳源，依据进出水水质进行BOD化学计量分析。结果表明，快速生物降解碳源(RBC)相较于慢速生物降解碳源(SBC)更有利于系统脱氮除磷，SBC更易满足微生物合成代谢的需求。利用ASM模型(Activated Sludge Model)以及响应面分析结果显示，易生物降解COD(S_S)与慢速生物降解(COD)X_S对脱氮效果有显著影响，小试系统每补充5 g左右S_S或19 g左右X_S可多去除1 g总氮。根据RBC用于除磷脱氮、SBC用于维持生物活性的理念，提出了甲醇和淀粉组合碳源的投药量计算公式。更多还原

【Abstract】 A lab-scale system based on the AAO process design parameters of the Wachi Wastewater Treatment Plant was extablished.Experimental influent was prepared by diluting grit chamber effluent and adding reagents to achieve preset water quality with real-time monitoring for stability.Different carbon sources with equivalent COD loads were tested, and BOD stoichiometric analysis indicated that readily biodegradable carbon(RBC) enhanced nitrogen/phosphorus removal, while slowly biodegradable carbon(SBC) better supported microbial anabolism.ASM(activated sludge model) and response surface analysis revealed that easily biodegradable COD(S_S) and slowly biodegradable COD(X_S) significantly influenced denitrification, requiring 5 g S_S or 19 g X_S to remove 1 g total nitrogen.Based on RBC’s nutrient removal efficiency and SBC′s role in maintaining microbial activity, a dosing calculation formula for combined methanol-starch carbon sources was developed.更多还原