a novel strategy for simultaneous removal of nitrogen and organic matter using anaerobic granular sludge in anammox hybrid reactor' impact factor
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The coexistence of organic matter (OM) and nitrogen in industrial effluent is the major bottleneck in field-scale application of anammox process. The present study emphasized on investigating the role of seeding anaerobic granular slu simultaneous removal of ammonium and OM in anammox hybrid reactor (AHR). The study delineated simultaneous reduction of both OM (94.8%) and nitrogen (96.8%) at optimal COD/N ratio (0.54). Pearson correlation matrix showed positive and strong correlation of ARE (ammonium removal efficiency) and CRE (COD removal efficiency) with NRE (nitrogen removal efficiency). The negative correlation of OLR and COD/TN ratio with NRE indicated that increase in organic loadings may suppress anammox activity. The process inhibition was evaluated using Haldane model considering free ammonia, OM and nitrite as inhibitors. The strategy of using anaerobic granular sludge not only augmented endurance of bacterial communities against OM inhibition but also facilitated simultaneous removal of OM and nitrogen. Copyright © 2015 Elsevier Ltd. All rights reserved.
... Towards complete nitrogen removal in wastewater, a combined technology was developed through coupling membrane biofilm reactor (MBfR) and DAMO/anammox processes ( Shi et al., 2013). The key advantages of the MBfR are high biomass re- tention by biofilm development and efficient methane delivery , which has been demonstrated to be critical for enhanced nutrient removal (Cai et al., 2015;Shi et al., 2013;Sunil Kumar et al., 2007;Tomar et al., 2015). These features enabled much higher nitrogen and carbon conversion rates compared to the use of suspended cultures in previous studies (Haroon et al., 2013;Hu et al., 2015). ...
Effect of methane pressure on the performance of a membrane biofilm reactor coupling methane-dependent denitrification and Anammox
... In extreme cases that COD=NH 4 þ À N ratio much higher than 5, the dilution of influent is necessary. Various other substrate inhibition models such as, Haldane, Bhatia et al., Parkin and Speece models could be applied for pre- dicting inhibition kinetics in anammox SBR, and they were all well predicted the inhibition of anammox process (45,46). However, different to these models, the remodified Logistic model used in present research could simulate the nitrogen removal performance in presence of carbon source in a typical operation cycle. ...
The coexistence of organic matter (OM) and nitrogen in industrial effluent is the major bottleneck in field-scale application of anammox process. The present study emphasized on investigating the role of seeding anaerobic granular slu simultaneous removal of ammonium and OM in anammox hybrid reactor (AHR). The study delineated simultaneous reduction of both OM (94.8%) and nitrogen (96.8%) at optimal COD/N ratio (0.54). Pearson correlation matrix showed positive and strong correlation of ARE (ammonium removal efficiency) and CRE (COD removal efficiency) with NRE (nitrogen removal efficiency). The negative correlation of OLR and COD/TN ratio with NRE indicated that increase in organic loadings may suppress anammox activity. The process inhibition was evaluated using Haldane model considering free ammonia, OM and nitrite as inhibitors. The strategy of using anaerobic granular sludge not only augmented endurance of bacterial communities against OM inhibition but also facilitated simultaneous removal of OM and nitrogen. Copyright © 2015 Elsevier Ltd. All rights reserved.
... Towards complete nitrogen removal in wastewater, a combined technology was developed through coupling membrane biofilm reactor (MBfR) and DAMO/anammox processes ( Shi et al., 2013). The key advantages of the MBfR are high biomass re- tention by biofilm development and efficient methane delivery , which has been demonstrated to be critical for enhanced nutrient removal (Cai et al., 2015;Shi et al., 2013;Sunil Kumar et al., 2007;Tomar et al., 2015). These features enabled much higher nitrogen and carbon conversion rates compared to the use of suspended cultures in previous studies (Haroon et al., 2013;Hu et al., 2015). ...
Effect of methane pressure on the performance of a membrane biofilm reactor coupling methane-dependent denitrification and Anammox
... In extreme cases that COD=NH 4 þ À N ratio much higher than 5, the dilution of influent is necessary. Various other substrate inhibition models such as, Haldane, Bhatia et al., Parkin and Speece models could be applied for pre- dicting inhibition kinetics in anammox SBR, and they were all well predicted the inhibition of anammox process (45,46). However, different to these models, the remodified Logistic model used in present research could simulate the nitrogen removal performance in presence of carbon source in a typical operation cycle. ...
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