Nitrates in water result mainly from the organic pollution caused by urban agglomerations. However, other important nitrate-sources are fertilizers used in agriculture, discharges from certain industries, as well as some combustion processes. Typically, wastewater undergoes a complex series of mechanical, physical, chemical and biological treatments, which point at the elimination of pollutants for the subsequent restitution of purified water to the environment or for reutilization. While anions that form insoluble compounds are removable by precipitation, nitrates are water-soluble and their abatement from aqueous media requires specific approaches. Obviously, among the existing solutions, those that do not involve the production of additional waste materials should be preferred.
Removal of Nitrates from industrial wastewater
FERRO, Sergio
2012
Abstract
Nitrates in water result mainly from the organic pollution caused by urban agglomerations. However, other important nitrate-sources are fertilizers used in agriculture, discharges from certain industries, as well as some combustion processes. Typically, wastewater undergoes a complex series of mechanical, physical, chemical and biological treatments, which point at the elimination of pollutants for the subsequent restitution of purified water to the environment or for reutilization. While anions that form insoluble compounds are removable by precipitation, nitrates are water-soluble and their abatement from aqueous media requires specific approaches. Obviously, among the existing solutions, those that do not involve the production of additional waste materials should be preferred.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
