Low-oxygen wastewater treatment with granular activated sludge
Abstract
Low-oxygen wastewater treatment with granular activated sludge
Incoming article date: 05.05.2021The article discusses the features of granular formation of activated sludge, operating according to the modified DEAMOX technology with nitrification, incomplete denitrification and anammox. Reverse denitrification and anammox are implemented in the same volume of the bioreactor under anoxic-anaerobic conditions with a vertical flow of the sludge mixture. Anammox biomass mainly developed on stationary feed material, while the heterotrophic denitrifying activated sludge showed the ability to granulate up to 20 mm nominal diameter. The article discusses the effect of various temperature conditions on the size and stability of granules.
Keywords: nitrification, denitrification, activated sludge, aeration tank, anammox, biological treatment, domestic wastewater, low-oxygen treatment method, energy saving, resource saving, ecology