【摘要】 以生活污水为处理对象,考察A/O-MBR系统稳态运行状况及抗冲击负荷能力,探讨系统运行过程中基质降解动力学方程。研究结果表明,系统对实际生活污水波动(COD:70~200 mg/L;NH4+-N:18~45 mg/L)的适应性较强,能抗击1.53 kgCOD/(m3·d)的容积负荷,连续运行出水的COD均在40 mg/L以下,NH4+-N均在1.5 mg/L以下,达到GB8978-1996的一级A标;采用Mond模型对COD降解动力学过程进行解析,获得动力学参数Vmax=0.38 d-1及KS=100.98;实验验证该动力学方程能较好地预测A/O-MBR出水水质,可以为A/O-MBR系统处理生活污水工艺设计提供参考。更多还原

【Abstract】 Running condition,resistance to impact load of A/O-MBR steady-state and COD degradation kinetic equation in the running system were investigated with the raw sewage treated as the object. Results showed that the system adapted well to the sewage wave of actual fluctuation of COD 70~200 mg/L and NH4+-N 18~45 mg/L,it could resist the volume load of 1.53 kgCOD/(m3·d). The continues running effluent of COD was below 40 mg/L and NH4+-N was below 1.5 mg/L,which reached Grade A of the standard GB8978-1996. COD degradation dynamic process was analyzed with Mond model,obtaining the kinetic parameter Vmax0.38 d-1and KS100.98. The result indicated that the kinetic equation could predict the effluent qualities of A/O- MBR well,which can provide reference for the raw sewage process design with A/O-MBR system.更多还原