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.
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