Ammonia is highly soluble in ...
Published by Mike Dempsey, Managing Director, Advanced Bioprocess Development Ltd.
Ammonia is highly soluble in water, so cannot be removed with coagulants, which are only useful for removing suspended impurities.
Adsorbents do exist that can remove ammonia but can generate a new waste during re-generation, which has to be disposed of. What concentration of ammonia do you need to remove? If it is not high enough, this option may not be the most cost-effective.
An alternative is to use a biological process (nitrification), to oxidise the ammonia to nitrate. This is typically used to "remove" ammonia from raw or wastewater where the concentration is "low" (typically up to 30 mg/L in secondary wastewater effluent).
Depending on the nature of the suspended impurities, they may also be removed in a biological process, by the filter-feeding activities of e.g. protozoa and rotifers.
If the ammonia concentration is "high" (100s mg/L), an alternative biological process (anammox) might be the most cost-effective, unless the ammonia can be recovered for re-use by e.g. stripping.