A balancing act: the consulting engineers' pragmatic view of process modelling

Copp, John B.; Johnson, Bruce R.; Shaw, Andrew; Burbano, Mauricio; Narayanan, B.; Frank, Keila Ledesma; Kinnear, David J.; Melcer, Henryk; Brischke, Ken

doi:10.2166/wst.2009.594

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the issues stated before, it is needed to develop a novel treatment method applicable in conventional activated sludge system. Mathematical modeling becomes popular in design and simulating the wastewater treatment plant process (Copp et al, 2009 ). The modeling can easily predict system treatment performance (Ai et al, 2012 ; Pereira, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Applying novel methods in conventional activated sludge plants to treat low-strength wastewater

Latif

2022

Environ Monit Assess

View full text Add to dashboard Cite

Conventional activated sludge system is confidently widely used for biological treatment plants of municipal wastewater but suffering from operation problems that affect their efficiencies and effluent qualities, especially when treating low-strength wastewater with increasing incoming flow. The objective of this study is to evaluate and compare the novel methods used in upgrading conventional activated sludge treatment systems receiving low-strength wastewater to generate good effluent quality. GPS-X Simulator V 8.0 was used for model calibration and plant performance prediction. The calibrated GPS-X model proved that eliminating primary settling from the treatment process does not affect BOD5 and COD removal, while TSS removal is decreased, and NH4-N removal is increased. Increasing the return activated sludge flow from 50 to 150% of influent flow does not affect conventional activated sludge process, while the change of waste activated flow had a vital effect on process performance. The presence of an anoxic zone in conventional activated sludge processes treating low-strength wastewater has no significant impact on plant performance. Also, the model outputs proved that adding filling media to the aeration tank was able to handle an increase of influent flow and a stable performance of BOD5, and NH4-N removal was observed.

show abstract

Section: Introductionmentioning

confidence: 99%

Applying novel methods in conventional activated sludge plants to treat low-strength wastewater

Latif

2022

Environ Monit Assess

View full text Add to dashboard Cite

show abstract

“…Using a biological model in conjunction with a settling model complicates calibration efforts, but is often necessary. But perhaps the biggest limitation is the lack of a standard modelling approach among consultants, although progress is being made (Gillot et al 2007;Copp et al 2008).…”

Section: Current Limitationsmentioning

confidence: 99%

Wastewater treatment modelling in practice: a collaborative discussion of the state of the art

Phillips¹,

Sahlstedt

Frank³

et al. 2009

Water Science and Technology

Self Cite

View full text Add to dashboard Cite

Three consulting teams conducted independent modelling projects for three different wastewater treatment plants ranging in size from approximately 113,800 m(3)/d (30 mgd) to 530,000 m(3)/d (140 mgd), in different parts of the world (USA and Finland). The plants have different treatment objectives ranging from nitrification and partial denitrification (nitrate plus nitrite <8.7 mg/L) to enhanced nutrient removal (total nitrogen <3 mg/L, total phosphorus <0.3 mg/L). Commonly-used models were applied in the case studies, including ASM3 (using the GPS-X simulator), New General (using GPS-X), Dold (using BioWin), and a variation of the Dold model methanol degradation capabilities (NGmeth within GPS-X). The authors compare and contrast the modelling approaches taken, including calibration and validation approaches, sensitivity analyses, and the application of results to full-scale studies, designs and operations. Despite several differences between the approaches, there are many similarities which are discussed in light of the IWA draft uniform protocol for activated sludge modelling. The authors also discuss current modelling limitations and offer suggestions to improve the state of the art.

show abstract

“…The use of dynamic modeling and simulation in wastewater treatment design is now ubiquitous [17]. The models are supported by GPS-X, SIMBA, AQUASIM, BIOWIN, and STOAT.…”

Section: -Introductionmentioning

confidence: 99%

Techno-economic analysis of a municipal wastewater treatment plant: A comparison among SBR, MLE & A2O Processes

Rabani mehr,

Nikkhah,

Farhadian

2023

Scientia Iranica

View full text Add to dashboard Cite

Sequencingbatch reactor (SBR), modified Ludzak Ettinger (MLE), and anaerobic/anoxic/aerobic (A2O), were modeled and simulated using the data of the Konarak-Iran wastewater treatment plant. GPS-X and CapdetWorks software were used for technical and economic evaluation, respectively. The cost of MLE treatment per cubic meter of effluent with a flow rate of 900 cubic meters per day was $ 0.96 per cubic meter, which was 36.4% and 12.5% lower than SBR and A2O, respectively. The removal efficiency of pollutants using the A2O method was above 90%, which has the best efficiency compared to the other two methods.However, since the quality of the effluent is also met by the MLE method, the choice of the same method can be desirable. Therefore, modeling and technical and economic simulation of wastewater treatment to perform comparisons between different methods lead to better engineering decisions based on the cost and quality of effluent.

show abstract

A balancing act: the consulting engineers' pragmatic view of process modelling

Cited by 6 publications

References 2 publications

Applying novel methods in conventional activated sludge plants to treat low-strength wastewater

Applying novel methods in conventional activated sludge plants to treat low-strength wastewater

Wastewater treatment modelling in practice: a collaborative discussion of the state of the art

Techno-economic analysis of a municipal wastewater treatment plant: A comparison among SBR, MLE & A2O Processes

Contact Info

Product

Resources

About