Microbial Fe(II)-oxidation by nitrate in activated sludge |
| |
| Affiliation: | 1. Fishery College, Jimei University, Xiamen 361021, China;2. Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education PRC, Xiamen 361021, China;3. Scottish Fish Immunology Research Centre, Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK;1. School of Environment, Northeast Normal University, Changchun 130117, China;2. Ministry of Education Key Lab of Groundwater Resources and Environment, Jilin Province Key Lab of Water Resources and Aquatic Environment, College of Environment and Resources, Jilin University, Changchun 130012, China |
| |
| Abstract: | The oxidation of Fe(II) to Fe(III) by addition of nitrate and nitrite to activated sludge was studied to determine whether the process was biological or chemical (chemodenitrification). It was shown that the process was mainly biological, although the microorganisms involved have not yet been described. Investigations in a full scale treatment plant suggested that the process most likely took place m the anoxic (denitrification) tank. Details of the kinetics and stoichiometry have not yet been determined, but the process may he of significance for keeping Fe(III) oxidized, which is important for P-removal and for floc structure. Furthermore, in some treatment plants, the oxidation may also be of significance for nitrate removal (denitrification). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
