| Title: | [Detection of anaerobic processes and microorganisms in immobilized activated sludge of a wastewater treatment plant with intense aeration] |
| Author(s): | Litti Iu V; Nekrasova VK; Kulikov NI; Siman'kova MV; Nozhevnikova AN; |
| ISSN/ISBN: | 0026-3656 (Print) 0026-3656 (Linking) |
| Abstract: | "Attached activated sludge from the Krasnaya Polyana (Sochi) wastewater treatment plant was studied after the reconstruction by increased aeration and water recycle, as well as by the installation of a bristle carrier for activated sludge immobilization. The activated sludge biofilms developing under conditions of intense aeration were shown to contain both aerobic and anaerobic microorganisms. Activity of a strictly anaerobic methanogenic community was revealed, which degraded organic compounds to methane, further oxidized by aerobic methanotrophs. Volatile fatty acids, the intermediates of anaerobic degradation of complex organic compounds, were used by both aerobic and anaerobic microorganisms. Anaerobic oxidation of ammonium with nitrite (anammox) and the presence of obligate anammox bacteria were revealed in attached activated sludge biofilms. Simultaneous aerobic and anaerobic degradation of organic contaminants by attached activated sludge provides for high rates of water treatment, stability of the activated sludge under variable environmental conditions, and decreased excess sludge formation" |
| Keywords: | Anaerobiosis *Biofilms Sewage/*microbiology Wastewater/*microbiology *Water Microbiology; |
| Notes: | "MedlineLitti, Iu V Nekrasova, V K Kulikov, N I Siman'kova, M V Nozhevnikova, A N rus English Abstract Research Support, Non-U.S. Gov't Russia (Federation) 2014/12/17 Mikrobiologiia. 2013 Nov-Dec; 82(6):672-80" |
