Biological nutrient removal in sequencing batch reactors using fibrous packing medium

1996 ◽  
Author(s):  
Wai-chung, Jackson Ling
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

Demonstration of enhanced nutrient removal at two full-scale SBR plants

2004 ◽  
Vol 50 (10) ◽  
pp. 115-120 ◽  
Author(s):  
M. Peters ◽  
M. Newland ◽  
T. Seviour ◽  
T. Broom ◽  
T. Bridle
Keyword(s):  
Nutrient Removal ◽  
Full Scale ◽  
Biological Nutrient Removal ◽  
Batch Reactors ◽  
Simultaneous Nitrification And Denitrification ◽  
Sequencing Batch Reactors ◽  
Operational Control ◽  
The World ◽  
High Level ◽  
Operational Data

The efficacy of sequencing batch reactors (SBRs) to provide high levels of biological nutrient removal has been extensively demonstrated around the world. Environmental Solutions International (ESI) has now constructed over 20 full-scale SBR plants and has confirmed that nutrient removal is enhanced via the process of simultaneous nitrification and denitrification. Over 18 months of operational data from two plants, operating in distinctly different catchments, processing an average of between 2,000 and 2,500 m3/d of wastewater, has clearly shown the efficacy and robustness of the ESI SBR-BNR process. Median effluent total nitrogen and total phosphorus values of 3 mg/L and <0.6 mg/L, respectively, were demonstrated over the 18-month period. This high level of nutrient removal is attributed to the design of the bio-selector which maximises carbon storage for the subsequent denitrification reactions, the effective aeration control which ensures no over-aeration during the air-on cycle as well as the level of operational control provided at these two plants.

Enhanced biological nutrient removal in sequencing batch reactors operated as static/oxic/anoxic (SOA) process

2013 ◽  
Vol 143 ◽  
pp. 204-211 ◽  
Author(s):  
Dechao Xu ◽  
Hongbo Chen ◽  
Xiaoming Li ◽  
Qi Yang ◽  
Tianjing Zeng ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

Effect of fermented swine wastes on biological nutrient removal in sequencing batch reactors

1997 ◽  
Vol 31 (7) ◽  
pp. 1807-1812 ◽  
Author(s):  
Sang-Ill Lee ◽  
Jong-Ho Park ◽  
Kwang-Baik Ko ◽  
Ben Koopman
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

scholarly journals Model evaluation and optimisation of nutrient removal potential for sequencing batch reactors

Water SA ◽  
2002 ◽  
Vol 28 (4) ◽  
Author(s):  
N Artan ◽  
P Wilderer ◽  
D Orhon ◽  
R Tasli ◽  
E Morgenroth
Keyword(s):  
Nutrient Removal ◽  
Model Evaluation ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

Use of external carbon sources derived from biowaste for short-cut nutrient removal from anaerobic effluents

2014 ◽  
Vol 69 (9) ◽  
pp. 1853-1858 ◽  
Author(s):  
Evina Katsou ◽  
Nicola Frison ◽  
Simos Malamis ◽  
Francesco Fatone
Keyword(s):  
Acetic Acid ◽  
Nutrient Removal ◽  
Carbon Sources ◽  
Phosphorus Uptake ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Fermentation Liquid ◽  
Anaerobic Sludge Blanket

This work evaluated the use of different external carbon sources to promote the via-nitrite nutrient removal from anaerobic effluents. The carbon sources consisted of fermentation liquid produced from the organic fraction of municipal solid waste (OFMSW FL), drainage liquid produced from OFMSW, fermentation liquid produced from vegetable and fruit waste (VFW FL) and acetic acid. Denitritation and phosphorus uptake via nitrite were evaluated in two sequencing batch reactors, one treating the anaerobic supernatant produced from the co-digestion of OFMSW and activated sludge (highly nitrogenous anaerobic effluent – HNAE), and the other one treating the weakly nitrogenous anaerobic effluent (WNAE) from an upflow anaerobic sludge blanket reactor. The use of OFMSW FL to treat HNAE resulted in high nitrite (27 mgN/(gVSS·h) (VSS – volatile suspended solids) and phosphate uptake (15 mgP/gVSS·h). In the WNAE, nutrient kinetics were much slower. The use of acetic acid and VFW FL performed poorly, while the use of OFMSW FL, which was rich in butyric acid and propionic acid, resulted in significant nutrient removal (7 mgN/gVSS·h and 6 mgP/gVSS·h). The economic evaluation showed that the use of OFMSW FL is a less expensive option than the acetic acid use.

scholarly journals Finding optimal algal/bacterial inoculation ratio to improve algal biomass growth with wastewater as nutrient source

Water SA ◽  
2019 ◽  
Vol 45 (4 October) ◽  
Author(s):  
Le Anh Pham ◽  
Julien Laurent ◽  
Paul Bois ◽  
Adrien Wanko
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Algal Biomass ◽  
Algal Growth ◽  
Total Biomass ◽  
Batch Reactors ◽  
Biomass Growth ◽  
Sequencing Batch Reactors ◽  
Solids Retention ◽  
Removal Efficiencies

Algal growth, nutrient removal and settling efficiency were quantified while inoculating sequencing batch reactors with a mixture of microalgae and bacteria (activated sludge). Three algae/bacteria inoculation ratios (5:1, 1:1 and 1:5) as well as pure algal biomass (control) were assessed. Algal biomass production increased with the addition of activated sludge. However, the addition of too much activated sludge can cause disturbance to the Al-Bac biomass growth and algal bacterial processes. All reactors including the control with only algae showed similar settling and nutrient removal efficiencies. Good settling was observed in all reactors with only 5% of total biomass found in supernatant after 1 h of settling. Removal efficiencies of COD, TN and PO4-P in all reactors were 79–82%, 61–65% and 15–37%, respectively, with the lowest phosphorus removal efficiency belonging to 1:5 algae/activated sludge ratio. These results may be due to both long hydraulic (7 days) and solids retention times (up to 30 days). Finally, Al-Bac biomass with 1:1 inoculation ratio showed the best enhancement in terms of biomass growth and algal activities.

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