HRT对SUFR系统处理效果的试验分析

分析了总水力停留时间(11 h、9 h、 8 h、 6 h)对螺旋升流式反应器系统处理效果的影响.利用SUFR系统进行试验研究的结果表明,在HRT大于8 h(厌氧停留时间1.51 h,缺氧停留时间2.25 h,好氧停留时间4.24 h)时,该系统COD、TN、TP的处理效果随着水力停留时间的减小变化不大,COD、TN、TP去除率仍分别达到93%﹑87%、90.2%以上.当HRT降为6 h(厌氧停留时间1.13 h,缺氧停留时间1.69 h,好氧停留时间3.18 h)时,处理效果变化较大,但COD的去除率仍高于85%,TN、TP的去除率变为76%、72%,仍具有较高的去除率.这说明,接近活塞流特征的SUFR系统可以减轻增加水力负荷对污水处理的负影响,具有较强的抗冲击负荷能力.

HRT Effects on Biological Nutrient Removal in Spiral Up-flow Reactor System

Overall effects of HRT ( 11 h, 9 h, 8 h, 6 h ) on the Spiral up-flow reactor (SUFR) system are analyzed. The results of the operation under different HRT condition shows that the removal efficiencies of COD, TN and TP decreased not obviously with decreasing HRT when HRT is longer than 8h. Anaerobic retention time, anoxic retention time and aerobic retention time were 1.51 h,2.25 h and 4.24 h,respectively. The removal efficiencies of COD, TN and TP is kept over 93%,87% and 90.2%, respectively. Although the removal efficiencies changed obviously when the HRT was 6 h. Anaerobic retention time, anoxic retention time and aerobic retention time are 1.13 h,1.69 h and 3.18 h,respectively. COD-removal efficiency is always up to 85%, the removal efficiencies of TN and TP is kept over 76% and 72%,also has upper removal efficiencies. It is indicated that the SUFR system, which is similar to plug-flow-reactor, has strong stability and can compensate negative effects of increasing hydraulic loading.