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Long term operation of continuous-flow system with enhanced biological phosphorus removal granules at different COD loading
- Source :
- Bioresource technology. 216
- Publication Year :
- 2016
-
Abstract
- In this study, a continuous-flow system with enhanced biological phosphorus removal (EBPR) granules was operated at different COD concentrations (200, 300 and 400mgL(-)(1)) to investigate the effect of COD loading on this system. The results showed that when the COD concentration in influent was increased to 400mgL(-)(1), the anaerobic COD removal efficiency and total phosphorus removal efficiency reduced obviously and the settling ability of granules deteriorated due to the proliferation of filamentous bacteria. Moreover, high COD loading inhibited the EPS secretion and destroyed the stability of granules. Results of high-through pyrosequencing indicated that filamentous bacteria had a competitive advantage over polyphosphate-accumulating organisms (PAOs) at high COD loading. The performance of system, settling ability of granules and proportion of PAOs gradually recovered to the initial level after the COD concentration was reduced to 200mgL(-)(1) on day 81.
- Subjects :
- 0106 biological sciences
Environmental Engineering
Nitrogen
Segmented filamentous bacteria
chemistry.chemical_element
Bioengineering
010501 environmental sciences
Polysaccharide
01 natural sciences
Settling
Polysaccharides
010608 biotechnology
Waste Management and Disposal
0105 earth and related environmental sciences
chemistry.chemical_classification
Biological Oxygen Demand Analysis
biology
Bacteria
Sewage
Renewable Energy, Sustainability and the Environment
Phosphorus
Environmental engineering
Temperature
High-Throughput Nucleotide Sequencing
Proteins
General Medicine
biology.organism_classification
Pulp and paper industry
Enhanced biological phosphorus removal
Biodegradation, Environmental
chemistry
Rheology
Anaerobic exercise
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 216
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....c87c3d6fd98d5f4c41743b8e32fc4e01