含铁地下水成因、危害及防治

含铁地下水形成于中偏酸性的还原性水文地球化学环境中，人为活动也可引发含铁水的出现。含铁水进入水井附近后，有沉淀析出铁矿物从而堵塞水井附近含水层和滤水管的危险，也因为其偏低的ｐＨ值和可能含有硫化物而对金属水井管材具有腐蚀作用。防治含铁水对水井破坏作用的根本方法是采取改善地下水水质的现场处理技术。

Iron\|bearing groundwater occurs in the neutral\|to\|acid and reducing hydrogeochemical condition.Human activities also can cause its appearance.When iron\|bearing groundwater goes near wells,iron minerals may precipitate from water and thus risks to clog the aquifer and filter tube.The water may also be corrosive to the iron well tube due to its relatively low pH value and sulfide sometimes contained.The essential method to prevent clogging and corrosion is to improve the groundwater quality by in\|situ treatment.