改进的V型滤池中试试验研究

Pilot Study on the Modified V-type Filter

对给水厂普通V型砂滤池进行改造,形成兼有V型滤池优点的煤质活性炭-砂双层复合滤池。利用双层滤料滤池进行中试试验,结果表明,V型双层滤料滤池对沉淀后待滤水浑浊度、NH+4-N和CODMn去除率分别达71.72%、68.18%、27.63%,对比相同条件下普通砂滤池,双层滤料滤池对浑浊度去除率下降8.31%,而NH+4-N和CODMn去除率则分别上升5.04%和11.25%。活性炭-砂双层复合滤池去浊能力有一定程度下降,去除氨氮、CODMn能力有一定加强。

The traditional V-type filter was modified by filling with a coal-activated carbon bed to form a double-layer media V-type filter, which consequently had both their advantages. The results showed that the respective average removal efficiency of the double- layer media V-type filter were 71.72 %, 68.18 % and 27.63 %.Compared with traditional rapid V-type filter in the same experimental situation, the NH4^＋-N removal of the double-layer V-type filter had an increase of 5.04 %; the CODMn increased by 11.25 % while the turbidity was decreased by 8.31%. Based on the experimental results, the conclusion is that the improved V-type filter has a weakened removal ability on turbidity and enhanced removal abilities on NH4^＋-N and CODMn.