反冲洗对饮用水生物活性滤池生物量的影响

Effect of Backwashing on Biomass in Biological Active Filter of Drinking Water

研究了反冲洗对生物活性滤池生物量的影响。试验结果表明 ,生物活性滤池中的微生物系统能够抵抗反冲洗时的水动力和氯灭活作用的共同冲击。反冲洗过程中 ,所损失生物量主要是以悬浮状态存在的 ,这些生物量在反冲洗后的过滤过程中会逐渐恢复 ,并能恢复到反冲洗前的水平。

Impact of backwashing on biomass growth in biological active filter was researched. The results have shown that the microorganisms have the ability to resist the synergistic impact of hydrodynamic and chlorine chemical actions. During the backwashing, the losing biomass was mainly in suspension. During the next filtration cycle, it would regrow and recover to its pre-backwashing concentration. Backwashing impacted greatly on the amount of nitrosobacteria and nitrobacteria.