低温下SBR污水处理工艺运行研究

Study on the process of the SBR wastewater treatment system with low temperature

研究了低温和常温条件下SBR系统的运行状况,探索了低温条件下不同有机负荷与曝气时间的对应关系。常温SBR系统启动期为6d,低温系统启动期为8d,每天运行周期均为8h。低温系统的COD去除随曝气时间的变化趋势与常温系统基本相同,与常温系统的运行状况相比,低温系统在相同有机负荷情况下,其出水COD比常温系统稍低,但没有大的区别。常温和低温两种系统中,同一负荷每天出水COD浓度大致相同,但不同有机负荷系统的出水COD显著不同。

The process of SBR system and the relationship of organic load and aeration time at low temperature were studied. The start time of normal temperature and low temperature SBR system were 6 and 8 days, separately. And the course period was 8 hours. The trend of removing the COD were basically the same at 6℃ and 20℃, but the residual COD was higher at 6℃. At at 6℃ and 20℃, the residual COD of the same organic load were basically the same at the same day, but the residual COD of the different organic load were significant different.