<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Nitrate(V) ions in surface water and sewage are pollutants, which excessive concentration have a negative impact on aquatic ecosystems. Due to the chemical properties, removal of nitrates from wastewater is a difficult process. In the municipal sector, biological denitrification (activated sludge) is the most commonly used process. However, in the case of industrial wastewater, where inhibiting substances or substances toxic to microorganisms are present in wastewater, it is necessary to use other types of methods.</p>
<p>It is possible to distinguish here methods based on physicochemical processes, in particular: physicochemical separation, chemical or electrochemical reduction and oxidation under supercritical conditions. At present, membrane methods and ion exchange processes are used mainly in the industrial sector because of the high knowledge of the technology and the amount of applications used. Intensive studies are also being carried out on methods using chemical reduction processes, where greatest advantage is the ability to transform nitrates to neutral molecular nitrogen.</p>
</abstract>

Nitrate(V) ions in surface water and sewage are pollutants, which excessive concentration have a negative impact on aquatic ecosystems. Due to the chemical properties, removal of nitrates from wastewater is a difficult process. In the municipal sector, biological denitrification (activated sludge) is the most commonly used process. However, in the case of industrial wastewater, where inhibiting substances or substances toxic to microorganisms are present in wastewater, it is necessary to use other types of methods.
It is possible to distinguish here methods based on physicochemical processes, in particular: physicochemical separation, chemical or electrochemical reduction and oxidation under supercritical conditions. At present, membrane methods and ion exchange processes are used mainly in the industrial sector because of the high knowledge of the technology and the amount of applications used. Intensive studies are also being carried out on methods using chemical reduction processes, where greatest advantage is the ability to transform nitrates to neutral molecular nitrogen.

PHYSICOCHEMICAL METHODS OF NITRATES REMOVAL FROM WASTEWATER

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"PHYSICOCHEMICAL METHODS OF NITRATES REMOVAL FROM WASTEWATER"}

Nitrate(V) ions in surface water and sewage are pollutants, which excessive concentration have a negative impact on aquatic ecosystems. Due to the chemical...

PHYSICOCHEMICAL METHODS OF NITRATES REMOVAL FROM WASTEWATER

Article Category: research-article

Published Online: Oct 18, 2019

Page range: 153 - 159

Received: Jul 17, 2019

Accepted: Aug 18, 2019

DOI: https://doi.org/10.21307/acee-2019-046

Keywords
Chemical reduction, Chemical denitrification, Nitrates, Nitrates removal

© 2019 Maciej ŻOŁNIERCZYK et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

PHYSICOCHEMICAL METHODS OF NITRATES REMOVAL FROM WASTEWATER

Article Category: research-article

Published Online: Oct 18, 2019

Page range: 153 - 159

Received: Jul 17, 2019

Accepted: Aug 18, 2019

DOI: https://doi.org/10.21307/acee-2019-046

KeywordsChemical reduction, Chemical denitrification, Nitrates, Nitrates removal

© 2019 Maciej ŻOŁNIERCZYK et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Chemical reduction, Chemical denitrification, Nitrates, Nitrates removal