Currently, nitrate is a major water pollutant in many areas of world, such as Saudi Arabia, India, the UK, North America, Australia, Algeria, Morocco, in China, and Iran.
In my research work on the groundwater quality, I need to propose a treatment process for the problem of nitrate contamination.
F. Bouteldjaoui : Your question is very general to be answered reliably. The choice of technology depends upon many parameters. For example the starting concentration of nitrate can be mentioned. It is necessary to know total dissolved inorganic and organic compounds. Very important is the amount of water to be treated per hour or a day. There exist more issues to be taken in the account before the choice of the most suitable technology.
Best regards
Vit
The elimination of nitrates can be carried out either by biological treatments: heterotrophic or autotrophic denitrification or by Physico-chemical treatments: ion exchanges, membrane processes. To date, the various approved heterotrophic biological denitrification processes use acetic acid or ethanol. Autotrophic processes use sulfur or hydrogen in water. The physico-chemical processes are ion exchange (chloride cycle, bicarbonate cycle, carbon dioxide), reverse osmosis, electrodialysis.
Regards
Article Effects of Macrophytes and External Carbon Sources on Nitrat...
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https://www.jstor.org/stable/25046797?seq=1#metadata_info_tab_contents
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Nitrate removal from groundwater using catalytic reduction
https://ascelibrary.org/doi/abs/10.1061/(asce)0733-9372(1997)123:4(371)
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https://iwaponline.com/aqua/article/67/8/885/65306/Nitrate-removal-from-groundwater-a-review-of
Continuous denitrification is one of the best treatment processes for nitrate removal. The following article might help you on this aspect:
Article Optimisation and Stability of Rh Particles on Noble Metal Fi...
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