结合水厂实际水处理工艺及活性炭深度处理装置，试验研究砂滤池和活性炭滤柱出水中颗粒物数量变化及粒径分布规律。
The amount and size distribution of particles in the effluent from a sand filter or from activated carbon filtration in a drinking water treatment plant were investigated.
探讨了滤柱生物除铁的影响机理。
The influencing mechanism of the filter candle on biological iron-removal was discussed.
流程2砂滤柱对有机物去除效果较差。
Poor organics removal was caused by sand filter in process train 2.
以生物滤柱为反应器，对含铁、锰地下水进行处理。
A down-flow biological filter is used for the groundwater iron and manganese.
其目的是克服普通筒式加压过滤机袋式过滤柱存在的缺陷，提供一种能够有效清洗滤袋的过滤柱。
The technical proposal aims at overcoming the defect in the bag type filtering cylinder of the normal cylindrical pressure filter and providing a filtering cylinder that can be cleaned effectively.
通过在锰砂及石英砂上固定自行分离的纤发菌属细菌，研究了生物固定化锰砂及石英砂滤柱的除铁除锰能力。
Through immobilizing the isolated Leptothrix bacteria on manganese sand and quartz sand, the iron and manganese removal efficiency by the biologically immobilized filtration columns were studied.
通过在锰砂及石英砂上固定自行分离的纤发菌属细菌，研究了生物固定化锰砂及石英砂滤柱的除铁除锰能力。
Through immobilizing the isolated Leptothrix bacteria on manganese sand and quartz sand, the iron and manganese removal efficiency by the biologically immobilized filtration columns were studied.
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