Author/Authors :
Mohseni-Bandpi، Anoushiravan نويسنده Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Jack Elliott، David نويسنده School of Civil Engineering, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK , , Zazouli، Mohammad Ali نويسنده Department of Environmental Health Engineering, Faculty of Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari ,
Abstract :
This paper reviews both heterotrophic and autotrophic processes for the removal of nitrate from water supplies.
The most commonly used carbon sources in heterotrophic denitrification are methanol, ethanol and acetic acid.
Process performance for each feed stock is compared with particular reference nitrate and nitrite residual and to
toxicity potential. Autotrophic nitrate removal has the advantages of not requiring an organic carbon source;
however the slow growth rate of autotrophic bacteria and low nitrate removal rate have contributed to the fact
that relatively few full scale plants are in operation at the present time.
