活性炭滤池中颗粒物数量和粒径分布的研究

Particle amount and particle size distribution in activated carbon filter

结合水厂水处理工艺及活性炭深度处理装置,探讨了生物活性炭滤池出水中颗粒物数量的变化及粒径分布规律。结果表明,在过滤周期内活性炭滤池出水颗粒物数量与浊度会出现相似的变化规律,二者之间相关性较好,但活性炭滤池出水浊度的变化滞后于颗粒物数量的变化。生物活性炭滤池过滤初期,滤后水中大于2μm的颗粒物数量可达到111个/mL,50 min后数量降至50个/mL以下。生物活性炭滤池出水中大于2μm的颗粒物主要由粒径为2～7μm的颗粒物组成。

Combined with the water treatment process in waterworks and advanced activated carbon treatment device, the variation of particle amount and particle diameter distribution regularity in outflow of biological activated carbon filter were discussed. The results showed that the outflow particle amount and turbidity in activated carbon filter could appear similar change regularity in filtration period, there was a high correlation between them, but the change of turbidity in the outflow of activated carbon filter was subsequent to that of particle amount. Particle amount of 111 could be reached per milliliter with a size over 2 μm during the initial filtering stage of biological activated carbon filter. There were lower than 50 particles per milliliter with a size over 2 μm after 50 minutes. The particles with a size over 2 μm were mainly from 2 μm to 7 μm in the outflow from the biological activated carbon filter.