地下或现场除铁涉及将曝气水注入厌氧池 含水层吸附、氧化和沉淀过程导致还原铁 提取水中的浓度。然而，地下处理也会影响 地下水中的砷和磷酸盐水平。砷、磷酸盐和铁表现出相似的趋势 注入抽象周期中的模式。一旦停止注射更长时间， 铁和砷的浓度显著增加，砷的出现 然而，再调动还不确定。干燥生物滤池的强化硝化作用 地下处理被认为是另一个有益的副作用。在本研究中 氨氧化细菌（AOB）和古细菌（AOA）以及铁锈革兰菌被鉴定为 在地下曝气水中的含量高于参考值（即，背景） 地下水，尤其是在开采期开始时。G.ferruginea可能 以与之前类似的方式影响生物过滤器中的铁氧化和去除 假设为铁胶体。包括23个参考文献、表格和图表。

Subsurface or in-situ iron removal involves the injection of aerated water into an anaerobic aquifer. Processes of adsorption, oxidation and precipitation result in reduced iron concentrations in the abstracted water. However, subsurface treatment has also an effect on arsenic and phosphate levels in the groundwater. Arsenic, phosphate and iron show a similar pattern during an injection-abstraction cycle. Once injection is stopped for a longer period, iron and arsenic concentrations increase significantly, the occurrence of arsenic remobilization is, however, not certain. The enhanced nitrification on the dry biofilters after subsurface treatment has been observed as another beneficial side effect. In this study ammonia oxidizing bacteria (AOB) and archaea (AOA), and G. ferruginea were identified to be present at higher levels in the subsurface aerated water than in reference (i.e., backgound) groundwater especially at the beginning of the abstraction period. G. ferruginea could influence iron oxidation and removal in biofilters in a similar way as was previously hypothesized for iron colloids. Includes 23 references, table, figures.