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报导了利用轻质页岩去除地下水中铁、锰的研究，并介绍了在新滤料中加入适量已培养成熟的滤料可缩短新滤料成熟期，有利于及时供水和节省水资源。
Reported the use of light shale to remove iron and manganese in groundwater and introduced that adding the proper amount of matured filter media into the new filter media can shorten the maturity of the new filter media and facilitate timely water supply and water conservation.