生物滤池沿程生物量与反冲洗污泥的研究

Research on the biomass and backwash sludge along the height in the biofilter

研究了污水处理过程中生物滤池沿程的生物量变化以及沿程悬浮颗粒物(SS)的去除效率,以期找到滤池易堵塞的位置和堵塞主要原因,并找到合理的解决办法。试验结果表明,上向流生物滤池的底部对SS有较高的去除效果,SS总去除率在70%以上。同时发现生物量在滤柱的沿程高度上存在明显规律,滤池底部生物量随滤池高度的增加而增加,滤池中上部的生物量随滤池高度的增加而呈缓慢减少的趋势。

The biomass change and removing efficiencies of suspended solids（SS） along the height of the biofilter have been studied,so as to find out the position where they are easy to get blocked and the main causes of blockage,and find out reasonable solutions,as well. The experimental results show that on the bottom of upward flow biofilter,there is higher SS removing effect（the total removing rate is above 70%）. Meanwhile,it is found that the biomass has obvious regularity on the height along the filter candle,and the biomass on the bottom of the filter increases with the increase of the height of the filter. The biomass at the middle and upper parts of the filter decreases gradually with the increase of the filter height.