A novel storage driven granular post denitrification process: Long-term effects of volume reduction on phosphate recovery
Embargo Lift Date
MetadataShow full item record
Anoxic granular biomass with enhanced biological phosphorus (P) removal was used in a post-denitrification configuration to concentrate P in wastewater. The study examined the use of anoxic granules to facilitate application of volume reduction to create a P-enriched stream (>100 mg-P/L). The results indicated the importance of maintaining a food to microorganism (F/M) ratio of ~0.124 g-COD/g-MLSS.d to achieve P and nitrogen (N) removal close to 100%. While granulation required a short settling time and a high-volume exchange ratio, biomass wasting was essential to control the F/M ratio to maintain a suitable microbial diversity and abundance. Diversity and abundance were also impacted by volume reduction, but the effect of this was marginal compared with the effect of decreasing F/M ratio. Furthermore, a decrease in the F/M ratio enhanced sedimentation (SVI5decreased from 55.5 to 32.0 mL/g-MLSS) but decreased dewaterability (capillary suction time increased from 15.5 s to 19.4 s). Recovery of P as a concentrated liquor had minimal impact on the bacterial diversity.
Showing items related by title, author, creator and subject.
Hao, Hong; Feng, G.; Wang, H.; Li, G.; Yu, L. (2011)The paper presents a research with the aim to make the dynamic response of the rotary desiccant wheel fit with the variable air rate of VRV air conditioning system and save more energy. Mathematical model of rotary desiccant ...
Flexural and tensile moduli of unidirectional hybrid epoxy composites reinforced by S-2 glass and T700S carbon fibresDong, Jonathan; Davies, Ian (2014)A study on the flexural and tensile moduli of S-2 glass and T700S carbon fibre reinforced hybrid epoxy composites in intra-ply configurations is presented in this paper. Finite element analysis (FEA) and Classic Lamination ...
Physiological and behavioural responses of Australian and exotic prey to the scent of native and introduced predatorsMella, Valentina S. A. (2009)This study examined the physiological and behavioural effects of a stress-inducing stimulus (predator odour) on potential prey species (Australian native and exotic). The aim was to determine if differences in the response ...