Spreadsheet Implementation of Activated Sludge Model #1 For Sequencing Batch Reactors

Geselbracht, Jim

doi:10.2175/193864707788115870

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The volume and proportions of reactors that are used to receive incoming sewage and retain effluent and settled sludge will affect total volume and capital cost of each particular plant (Boon, 2003). In the United States, process designs for SBR typically are performed by SBR equipment manufacturers using the conventional design approach based on mean cell residence time (MCRT), food to microorganism ratio (F/M ratio), mixed liquor volatile suspended solids concentration (MLVSS), and hydraulic retention time (HRT) (Geselbracht, 2007). The conventional design approach has been in use for steady-state systems for many decades and does not use a model-based design approach.…”

Section: Introductionmentioning

confidence: 99%

Model‐Based Design of Sequencing Batch Reactor for Removal of Biodegradable Organics and Nitrogen

Sivasubramanian¹,

Clarkson

Veenstra

2010

Water Environment Research

View full text Add to dashboard Cite

The process design of sequencing batch reactors (SBR) based on mathematical modeling is complex because of the unsteady nature of the process and the large number of kinetic and stoichiometric parameters involved. This paper proposes a model-based design methodology that uses a mathematical model with fewer parameters for removal of organic and nitrogen substrates in the SBR. The resulting mathematical model has been calibrated and validated before its use in model-based design. The data for model calibration and validation were obtained from the operation of a full-scale 836 m 3 /h (5.3 mgd) SBR system at the City of Tahlequah, Oklahoma. A calibration methodology also was presented to determine unknown kinetic and stoichiometric parameters using an optimization technique called simulated annealing. Model-based design reduced the total volume of the reactor by approximately 11% from the existing design. It also eliminated 0.92 hours of cycle time and 1.07 hours of aeration time per cycle, which would result in a total energy savings of $11,640 per year for the 836 m 3 /h (5.3 mgd) SBR system. Water Environ. Res., 82, 462 (2010).

show abstract

Section: Introductionmentioning

confidence: 99%