Sequencing batch reactors for biological wastewater treatment

Irvine, Robert L.; Ketchum, Lloyd H.; Asano, Takashi

doi:10.1080/10643388909388350

Cited by 170 publications

(65 citation statements)

References 14 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Aerobic and anoxic conditions are separated by time instead of space [10] (figure 1d ). All the phases in continuous systems that are spatially separated are provided in a single reactor.…”

mentioning

confidence: 99%

Nitrous oxide emissions from wastewater treatment processes

Law

Pan

et al. 2012

Phil. Trans. R. Soc. B

386

283

View full text Add to dashboard Cite

Nitrous oxide (N 2 O) emissions from wastewater treatment plants vary substantially between plants, ranging from negligible to substantial (a few per cent of the total nitrogen load), probably because of different designs and operational conditions. In general, plants that achieve high levels of nitrogen removal emit less N 2 O, indicating that no compromise is required between high water quality and lower N 2 O emissions. N 2 O emissions primarily occur in aerated zones/compartments/periods owing to active stripping, and ammonia-oxidizing bacteria, rather than heterotrophic denitrifiers, are the main contributors. However, the detailed mechanisms remain to be fully elucidated, despite strong evidence suggesting that both nitrifier denitrification and the chemical breakdown of intermediates of hydroxylamine oxidation are probably involved. With increased understanding of the fundamental reactions responsible for N 2 O production in wastewater treatment systems and the conditions that stimulate their occurrence, reduction of N 2 O emissions from wastewater treatment systems through improved plant design and operation will be achieved in the near future.

show abstract

“…Aerobic and anoxic conditions are separated by time instead of space [10] (figure 1d ). All the phases in continuous systems that are spatially separated are provided in a single reactor.…”

mentioning

confidence: 99%

Nitrous oxide emissions from wastewater treatment processes

Law

Pan

et al. 2012

Phil. Trans. R. Soc. B

386

283

View full text Add to dashboard Cite

show abstract

“…We have previously suggested that enhanced N removal with intermittent aeration of the STA stems from a sequence in which aeration promotes ammonia oxidation to nitrate in soil, with the subsequent addition of STE to soils promoting removal of N via denitrification, by providing anaerobic conditions as well as organic C sources [8,14]. This is similar to the processes involved in N removal from wastewater using sequencing batch reactors (SBR) [22]. Recent studies of SBR have shown that simultaneous nitrification/denitrification can also take place in SBR [23].…”

Section: Relationship Between Hydraulic Load and Removal Of N P And Docmentioning

confidence: 62%

Improvement of Hydraulic and Water Quality Renovation Functions by Intermittent Aeration of Soil Treatment Areas in Onsite Wastewater Treatment Systems

Amador

Potts²,

Loomis

et al. 2010

Water

View full text Add to dashboard Cite

Abstract:We tested intermittent aeration of the soil treatment area (STA) of onsite wastewater treatment systems (OWTS) for its ability to restore and maintain STA hydraulic flow and improve the water quality functions of conventional OWTS. Evaluation was conducted on hydraulically-failed conventional OWTS at three state-owned medical group homes in Washington County, RI, USA. Testing was conducted in two phases, with Phase I (before intermittent soil aeration (ISA)) comprising the first 6 months of the study, and Phase II (during ISA) the remaining 7 months. Intermittent soil aeration restored STA hydraulic function in all three systems despite a marked reduction in the STA total infiltrative surface. Soil pore water was collected from 30 and 90 cm below the STA during both phases and analyzed for standard wastewater parameters. Although the STA infiltrative surface was reduced-and the contaminant load per unit of area increasedafter installation of the ISA system, no differences were observed between phases in concentration of total N, NO 3 , total P, or dissolved organic carbon (DOC). Apparent removal rates-which do not account for dilution or differences in infiltrative area-for OPEN ACCESSWater 2010, 2 887 total N, total P, and DOC remained the same or improved during Phase II relative to the pre-operation phase. Furthermore, intermittent soil aeration enhanced actual removal rates -which do account for dilution and differences in infiltrative area. The effects of ISA on actual removal of contaminants from STE increased with increasing hydraulic load-a counterintuitive phenomenon, but one that has been previously observed in laboratory studies. The results of our study suggest that intermittent soil aeration can restore and maintain hydraulic flow in the STA and enhance carbon and nutrient removal in conventional OWTS.

show abstract

“…The sequencing batch reactor (SBR) has been widely used to treat municipal wastewater, [1][2][3][4] landfill leachates, 5 and various industrial wastewaters since it was invented by Irvine and his coworkers. 1,[6][7][8] The SBR is a fill-and-draw system, where each tank is subjected to the following operations: fill (static or mixed), react (static or mixed), settle, idle, and decant (or draw) for predetermined time periods.…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of the sequencing batch reactor at a full‐scale municipal wastewater treatment plant

Ni¹,

Xie²,

Liu³

et al. 2009

AIChE Journal

View full text Add to dashboard Cite

in Wiley InterScience (www.interscience.wiley.com).In this work, we attempted to modify the Activated Sludge Model No.3 and to simulate the performance of a full-scale sequencing batch reactor (SBR) plant for municipal wastewater treatment. The long-term dynamic data from the continuous operation of this SBR plant were simulated. The influent wastewater composition was characterized using batch measurements. After incorporating all the relevant processes, the sensitivity of the stoichiometric and kinetic coefficients for the model was thoroughly analyzed prior to the model calibration. The modified model was calibrated and validated with the data from both batch-and full-scale experiments. Model predictions were compared with routine data in terms of chemical oxygen demand, NH 4 þ -N and mixed liquid volatile suspended solids in the SBR, combined with batch experimental data under different conditions. The model predictions match the experimental results well, demonstrating that the model is appropriate to simulate the performance of a full-scale wastewater treatment plant even operated under perturbation conditions.

show abstract

Sequencing batch reactors for biological wastewater treatment

Cited by 170 publications

References 14 publications

Nitrous oxide emissions from wastewater treatment processes

Nitrous oxide emissions from wastewater treatment processes

Improvement of Hydraulic and Water Quality Renovation Functions by Intermittent Aeration of Soil Treatment Areas in Onsite Wastewater Treatment Systems

Modeling and simulation of the sequencing batch reactor at a full‐scale municipal wastewater treatment plant

Contact Info

Product

Resources

About