Federation and Water Environment Arizona Waters Student ...
Transcript of Federation and Water Environment Arizona Waters Student ...
Water Environment Federation and Arizona Waters Student Design
Competition
Naif Alkahtani, Ahmad Almohammedsaleh, Brittany Riser, Juris Tan, Kyle Telesco
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Figure 1: WEF Logo [1]
Figure 2: AZ Water Logo [2]
CENE - 486CApril 16, 2021
Project Description
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● Purpose: To design a new water treatment plant, maintain TOC level below 2.0-mg/l in the finished water
● Client: AZ Water & WEF● Location: North Water
Treatment Plant (NWTP) ● Stakeholders: AZ Water,
WEF, NAU, and the City of Gilbert
Figure 3: Project Location [3]
Objectives● Lower the TOC levels less
than 2 mg/L ● Reduce chemical usage
Constraints ● Meet water regulations from
○ Environmental Protection Agency (EPA)
○ Arizona Department of Environmental Quality (ADEQ)
○ Maricopa County Environmental Services Department (MCESD)
● Meet expected demand to treat 70MGD by 2050.
Current Layout
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Figure 4: Existing Site Layout [4] Figure 5: Provided Source Water Characteristics [4]
* The build out population was used because of its closeness to the 2050 population** Daily Demand Factors were carried through from present WTP productions
Demand Calculations
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Build Out Population: The maximum population for an area
Table 1: Total Production
Design production based on population estimates
Even years & even productions
Demand Calculations - Phasing
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Table 2: Production Timeline
Lifecycle CostsCost estimation formulas
O&MCost estimation formulas
Social & Environmental FactorsAvailable literatureProcess efficiency improvements
Staffing LevelsAvailable literaturePortion of O&M from Staffing
Process Efficiency ImprovementsProcess Dependent
Feasibility/ConstructabilityComplexity of designResistance to dust storms/heatAlternative footprint
WeightingTreatment Process Dependent
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Matrix Criteria
Preliminary Treatment
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Screening
● Bar screen considered enough for preliminary treatment
Figure 6 : RakeFlex Bar Screen [11]
Primary Treatment - Decision Matrices
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Table 3: Primary Clarifier Decision Matrices
Primary Treatment - Design
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Rectangular clarifier
Dimensions of Clarifier 13.3m wide, 4.3m depth, 37.3m long
Phase 0(2021)45 MGD
1 Rectangular TankSurface area : 496m2
Phase 1 (2030)60 MGD
Adding 1 Tank (Total 2 rectangular clarifiers) Total Surface area: 992m2
Equation 1: Stokes Equation for Laminar Flow
Table 4: Rectangular Clarifier Design
Figure 7: Rectangular Clarifier [5]
Disinfection - Decision Matrices
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Table 5: Disinfection Decision Matrices
Disinfection (Ozone) - Design
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Table 6: Ozone Design
Figure 8: Ozonia CFV-30 Generator [6]
Figure 9: Diagram of Over-Under Contact Chamber [5]
Disinfection (UV) - Design
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Figure 10: TrojanUV Signa Diagram [7]
Figure 11: TrojanUV Signa Photo [7]
Table 7: UV Design
Secondary Treatment - Decision Matrices
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Table 8: Secondary Clarifier Decision Matrices
Secondary Treatment - Design
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Figure 12: Circular Clarifier [5]
Equation 1 : Stokes Equation for Laminar Flow
Table 9 : Secondary Clarifier Design Phasing Information Table 10: Recommended Clarifier Tank Depths [5]
Filtration - Decision Matrices
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Table 11: Filtration Decision Matrices
Filtration- Design
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Table 12: Filtration Design
Figure 13: Veolia FiltraFlo TGV Media View [8]
Solid Treatment
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Table 13: Solids Decision Matrices
Figure 14: Belt Filter Press Diagram [9]
18Figure 15: System Curve
Figure 16 : Centrifugal Pump [10]
Hydraulics
Table 14:Pump Information
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Bar Screen OzonationSecondary
SedimentationPrimary
Sedimentation
UV/Chlorine Filtration
Solids
Final Design Summary - Plant Flow Chart
Distribution
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Final Design Summary - Treatment PhasingTable 15: Design Summary
1 Calculating interest rate2 Initial year values3 Converted to present day money4 Grand Total
Cost Analysis - Example Calculation
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1
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Principal & O&M Yearly Cost(Simple interest)
O&M Total Cost(Uniform Series)
Equation 2 : Simple Interest
Equation 3 : Uniform Series
Table 16 : Example Cost Analysis Table
Cost Analysis - Totals
By Process
By Phase
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Table 18: Cost by Process
Table 17: Cost by Phase
Impacts
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Table 19: Impacts
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[1] Water Environment Federation - WEF Home, “WEF Home.” [Online]. Available: https://www.wef.org/. [2] “AZ Water Association.” [Online]. Available: https://www.azwater.org/. [3] "Map of US," [Online]. Available: https://www.mapofus.org/arizona/.[4] WEF, AZ Water Student Design Competition 2021, Gilbert: WEF, 2021.[5] M. L. Davis, Water and Wastewater Engineering Design Principles and Practice, McGraw-Hill. [6] SUEZ Water Technologies and Solutions, [Online]. Available: https://www.suezwatertechnologies.com/products/disinfection-oxidation/ozonia- dome-diffuser.[7] TrojanUV Disinfection Technologies, [Online]. Available: https://www.resources.trojanuv.com/wp-content/uploads/2020/12/TrojanUVSigna-Brochure.pdf.[8] "Veolia Water Technologies," [Online]. Available: https://www.veoliawatertechnologies.com/asia/en/solutions/products/filtraflo- tgv. [9] “Belt filter press,” Binfirst, 24-Dec-2019. [Online]. Available: https://www.binfirst.com/products/belt-filter-press/. [Accessed: 09-Mar-2021]. [10] 2021.http://www.gouldspumps.com/ittgp/medialibrary/goulds/website/ Literature/Pump%20Selection%20Guide/Goulds_Rev_PSG.pdf.[11] Duperon, “The Duperon FlexRake”, Duperon Adaptive Technology, 2019, Saginaw, Missouri.
References
Questions?
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