An/OSBR Process for Phosphorus Removal Effect of Different Sludge Load and Nitrate Concentration Condition

Abstract:

Based on An / OSBR, the paper explores the different sludge loading and nitrate concentrations under the conditions of An / OSBR effects of biological phosphorus removal systems.The influent phosphorus concentration constant at 10 ± 0.5mg / L, in order to compare the end of the anaerobic and effluent TP concentration.The results showed that: ①With the increasing of nitrate concentrations , PAOs release phosphorus in the anaerobic reaction zone is decreased, nitrate appears to reduce the synthesis of PHB, which is due to PHB synthesis and denitrification requires a simple carbon source as hydrogen donor, resulting in competition;② With the COD sludge load increases, the effluent TP concentration decreased, when the COD sludge load ≥ 0.46mgCOD/mgMLSS · d, the effluent TP concentrations is less than 1mg / L;③ When the reaction temperature was 25 °C and 15 °C , the releasing phosphorus in anaerobic and COD sludge load have a good correlation,Linear relationship between the two were: y = 0.72 +71.91 x ( 25 °C), y = 2.81 +73.33 x (15 °C);

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 1886-1889
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.1886
• Online since: December 2013
• Authors: Xiao Yan Tian, Liang Wang
• Keywords: Anaerobic Release Phosphorus, Biological Removal Phosphorus, Cod Load of Sludge, Reaction Temperature

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DOI: 10.1016/j.desal.2005.06.023