某倒置A2/O工艺的数值模拟与运行优化研究

摘要

The BioWin3.0 software was adopted to model the reversed A2/O wastewater treatment process of a waste water treatment plant in Jinan, Shandong. The reversed A2/O wastewater treatment process was numerical simulated by steps of influent component parameters determination, parameters calibration, ect, and then the operation was optimized. According to sensitivity analysis, 12 model parameters(sensitive parameters S1,j≥0.25) have an obvious influence on NH4+-N and TP simulation result. The established model was applied to simulate the reversed A2/O process in three different operation conditions, results showed that the operation was optimum and energy consumption was lowest when SRT was 24 d and internal return ratio was 100％.%运用BioWin3.o软件对济南市某污水处理厂采用的倒置A2/O工艺进行建模,通过初步模拟、敏感性分析、参数校正等,对该污水处理工艺进行数值模拟和运行优化.模型参数的敏感性分析结果表明,模型中影响出水NH4+-N、TP的输出结果、即灵敏度系数大于等于0.25的参数共有12个.对该工艺3种不同运行工况进行模拟研究发现,污泥龄为24 d、内回流比为100%时,该工艺运行状况较优,能耗较省,最为经济合理.