scholarly journals Comparative performance of activated sludge and aerobic granular sludge sequencing batch reactors for removing metalloid SeIV/VI oxyanions

2021 ◽  
Vol 2 ◽  
pp. 100040
Author(s):  
M. Sarvajith ◽  
Y.V. Nancharaiah
Keyword(s):  
Activated Sludge ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Comparative Performance

Analysis for the Impact of Loadings in the Formation Process of Aerobic Granular Sludge

2012 ◽  
Vol 518-523 ◽  
pp. 2340-2343
Author(s):  
Ting Lin ◽  
Xin Gang Wang ◽  
Yu Bin Tang ◽  
Fang Yan Chen
Keyword(s):  
Activated Sludge ◽  
Formation Process ◽  
Granular Sludge ◽  
The Self ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Removal Rates ◽  
High Sedimentation ◽  
The Impact

The aerobic granular sludge was cultivated in the self-designed sequencing batch reactors (SBR) using ordinary flocculent activated sludge as seeding sludge. In this experiment the effect of different load on the formation of aerobic granular sludge is studied. The formation process of aerobic granular sludge and the capacity of denitrification and phosphorus performance are discussed and characterized. It shows that higher sludge loading is beneficial to the formation of aerobic granular sludge, and mature aerobic granular sludge has high sedimentation speed and the very good decontamination ability. The removal rates of COD, NH4+Subscript text-N and TP are 97%, 85% and 95%.

Aerobic granular sludge technology: an alternative to activated sludge?

2004 ◽  
Vol 49 (11-12) ◽  
pp. 1-7 ◽  
Author(s):  
L.M.M. de Bruin ◽  
M.K. de Kreuk ◽  
H.F.R. van der Roest ◽  
C. Uijterlinde ◽  
M.C.M. van Loosdrecht
Keyword(s):  
The Netherlands ◽  
Activated Sludge ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Granular Sludge ◽  
Primary Treatment ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Effluent Standards

Laboratory experiments have shown that it is possible to cultivate aerobic granular sludge in sequencing batch reactors. In order to direct future research needs and the critical points for successful implementation at large scale, a full detailed design of a potential application was made. The design was based on the laboratory results, and two variants of a full-scale sewage treatment plant based on Granular sludge Sequencing Batch Reactors (GSBRs) were evaluated. As a reference a conventional treatment plant based on activated sludge technology was designed for the same case. Based on total annual costs both GSBR variants proved to be more attractive than the reference alternative (7-17% lower costs). From a sensitivity analysis it appeared that the GSBR technology was less sensitive to the land price and more sensitive to a rain weather flow (RWF). This means that the GSBR technology becomes more attractive at lower permissible RWF/DWF ratios and higher land prices. The footprint of the GSBR variants was only 25% compared to the reference. However, the GSBR with primary treatment only cannot meet the present effluent standards for municipal wastewater in The Netherlands, mainly because of a too high suspended solids concentration in the effluent. A growing number of sewage treatment plants in the Netherlands are going to be faced with more stringent effluent standards. In general, activated sludge plants will have to be extended with a post treatment step (e.g. sand filtration) or be transformed into Membrane Bioreactors. In this case a GSBR variant with primary treatment as well as post treatment can be an attractive alternative.

Identification of trigger factors selecting for polyphosphate- and glycogen-accumulating organisms in aerobic granular sludge sequencing batch reactors

2013 ◽  
Vol 47 (19) ◽  
pp. 7006-7018 ◽  
Author(s):  
David G. Weissbrodt ◽  
Guillaume S. Schneiter ◽  
Jean-Marie Fürbringer ◽  
Christof Holliger
Keyword(s):  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Trigger Factors

scholarly journals Study on aerobic granular sludge formation in sequencing batch reactors for tapioca wastewater treatment

2013 ◽  
Vol 16 (1) ◽  
pp. 40-48
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Granular Sludge ◽  
Biomass Accumulation ◽  
Synthetic Wastewater ◽  
Aerobic Granular Sludge ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Batch Reactors ◽  
Aerobic Granules ◽  
Toxic Substances ◽  
Sequencing Batch Reactors

Aerobic granular sludge has attracted extensive interest of researchers since the 90s due to the advantages of aerobic granules such as good settling ability, high biomass accumulation, being resistant to high loads and being less affected by toxic substances. Studies, however, which have mainly been carried out on synthetic wastewater, cannot fully evaluate the actual ability of aerobic granules. Study on aerobic granular sludge was performed in sequencing batch reactors, using seeding sludge taken from anaerobic sludge and tapioca wastewater as a substrates. After 11 weeks of operation, the granules reached the stable diameter of 2- 3 mm at 3.7 kgCOD/m3.day organic loading rate. At high organic loads, in range of 1.6 - 5 kgCOD/m3.day, granules could treat effectively COD, N, P with performance of 93 – 97%; 65 – 79% and 80 – 95%, respectively.

Effect of calcium addition on the formation and maintenance of aerobic granular sludge (AGS) in simultaneous fill/draw mode sequencing batch reactors (SBRs)

2020 ◽  
Vol 255 ◽  
pp. 109850 ◽  
Author(s):  
Antônio Ricardo Mendes Barros ◽  
Silvio Luiz de Sousa Rollemberg ◽  
Clara de Amorim de Carvalho ◽  
Ian Holanda Herbster Moura ◽  
Paulo Igor Milen Firmino ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Calcium Addition
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