Dresden University of Applied Sciences, Friedrich-List-Platz 1, 01069Dresden, Germany.
Dresden University of Applied Sciences, Friedrich-List-Platz 1, 01069Dresden, Germany.
Water Res. 2021 Mar 1;191:116788. doi: 10.1016/j.watres.2020.116788. Epub 2020 Dec 25.
Ammonium is an undesirable substance in the abstracted water of riverbank filtration (RBF) schemes, due mainly to the complications it causes during post-treatment. Based on the investigation of case studies from 40 sites around the world, an overview of the sources and behavior of ammonium during RBF is given. Typical concentrations of ammonium in the bank filtrate (BF) are between 0.1 and 1.7 mg/l. The most common source of ammonium in BF is the mineralization of organic nitrogen occurring in the riverbed, while the most common sink of ammonium is nitrification in the riverbed. Ammonium surface water concentrations do not directly translate to abstracted concentrations. Transformations in the riverbed play a critical role in determining ammonium concentrations, whereby riverbeds with high amounts of organic material will have more electron donor competitors for oxygen, thus limiting ammonium attenuation via nitrification.
氨是河岸渗滤（RBF）系统中被抽取的水中一种不理想的物质，主要是因为它在后续处理过程中会引起很多问题。基于对全球 40 个地点案例研究的调查，本文概述了 RBF 过程中氨的来源和行为。在河床滤水中，氨的典型浓度在 0.1 到 1.7mg/l 之间。BF 中氨的最常见来源是河床中有机氮的矿化作用，而氨的最常见汇则是河床中的硝化作用。地表水中的氨浓度不能直接转化为抽取的浓度。河床中的转化在确定氨浓度方面起着关键作用，其中含有大量有机物质的河床会有更多的电子供体与氧气竞争，从而限制通过硝化作用来减少氨。
