| Autor: |
Arkhipenko IA, Gusarova GA, Panikov NS |
| Jazyk: |
ruština |
| Zdroj: |
Mikrobiologiia [Mikrobiologiia] 1996 Sep-Oct; Vol. 65 (5), pp. 621-6. |
| Abstrakt: |
After their two-step purification in aeration tanks, effluents from a swine-breeding farm were subjected to final purification in a flow bioreactor with immobilized cells derived from activated sludge. The dynamics of nitrogen compounds were studied at the reactor inlet and outlet at three flow rates. The use of a simple mathematical model of the nitrogen balance allowed the rates of nitrogen assimilation-mineralization two nitrification stages, and nitrogen fixation-denitrification to be estimated. The first stage of nitrification was found to proceed intensely and produce high nitrite concentrations (up to 100 mg N/l, accounting for about half of the total N at the inlet). The second nitrification stage was inhibited, and nitrate was only produced after 3-4 weeks of continuous operation. The strategy of the final purification of effluents from nitrogen compounds is discussed on the basis of the known regulatory mechanisms of microbial activities in activated sludge. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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