Senior Design Project Presentation
description
Transcript of Senior Design Project Presentation
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PH&J ConsultantsProject Report
Engineer Brock HorsleyEngineer Heather JonesEngineer Tyler Puckett
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+I. OVERVIEW
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+Objective:Design Water Treatment FacilityOur firm has conducted the initial design and feasibility study for a water treatment facility that would utilize the Chattahoochee River in supplying the city of Dothan with drinking water.
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Overview of ProcessSurface Water Treatment
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+ Project Schedule
Weekly Tasks for PH&J Consultants
PH&J Consultants Schedule:WEEK: AGENDA:
#1 12-Jan-14 Analysis Job and Acceptance Memo#2 19-Jan-14 Reference Research#3 26-Jan-14 Research Jobsite & Organize Approach
#4 2-Feb-14Intake Analysis, Recharge Rate, Expected Growth, Average Life,
Pipes, & TOPO#5 9-Feb-14 Plant Layout, Design Basis, & Develop Assumptions#6 16-Feb-14 Chemical Reactions & Mass Balanaces#7 23-Feb-14 Check Progress, Calculations, Assumptions, & Design#8 2-Mar-14 Innovation#9 9-Mar-14 Cost Analysis
#10 16-Mar-14 Plant Drawing#11 23-Mar-14 Check Calculations, Assumptions, & Design#12 30-Mar-14 Develop Conclusion & Recommendations#13 6-Apr-14 Develop References & Appendies#14 13-Apr-14 Complete Project Folder#15 20-Apr-14 Check All Work & Submit
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+II. Location
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Site of Facility- Total Size: 12 acres
- Within City Limits
- Time to furthest serviceable area:
- 55min @ flow of 5ft/s
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Intake to Facility:
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+III. Plant Study
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Plant Design:
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Flow Rate:Design Life: 25 years (EPA, 2014)
3 Day Peak Selected
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Screens:• Concord Screen Airburst
Assembly D-72 • 2 screens are needed• Equipped with air compressors
that periodically clean the screens, eliminating maintenance costs
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Pumps
Pioneer Pump SC108S17
Specifications: Max flow 6500gpm Variable speed (7 gear) Can handle up to 3.5” solids Operates at 80% power
efficiency
- 4 pumps needed
While the peak flow rate in 2040 is projected to be 35 MGD, the rate for 2015 is projected to be as low as 16 MGD (Polyengineering, 2012).
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14+Pipes:Transfer Piping• Ductile Iron Pipe • Expected Life: 100 years • 2 pipe lines are needed• 36 in pipe diameter• Velocity: 3.9 ft/s • Length: 81,000 ft per pipe line
• 0.1 ft of headloss per 100 ft of pipe: 89 ft per pipeline
Yard Piping• Accounts for 10% of total cost• High-density polyethylene material will be used• Corrosion resistant • Commonly used for water transmission • Expected Life: 50 years • Color coding for water treatment plants set by Ten States
Standards
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Coagulant:
Aluminum Sulfate, Al2(SO4)3 easily accessible cost effective
Dosage: 20 mg/L 5,843 lb/day $0.07 / lb Year’s supply of Alum, 213,850 lb,
would cost $145,500 Inject by: Dry Alum Feeder
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Rapid Mix:
Detention Time: 45 seconds Needed Volume: 2500 ft3
#tanks = 10 (5 per train)
Vtank = 250 ft3
Velocity Gradient: 900 fps/ft to minimize detention
time
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+Flocculation:Detention Time: 30 minutesVolume Needed: 49,000 ft3
• Depth: 16 ft• Width: 32 ft• Length: 96 ft
Three chambers in each tank• 1st: G= 80 s-1 • 2nd: G = 50 s-1 • 3rd: G = 20 s-1
Napier Reid Flocculator • Expected life: 10 years
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Sedimentation:
Depth: 15 ftWidth: 100 ftLength: 260 ft• Velocity: 0.018 ft/s• Detention Time: 4
hours
Sludge Removal: 52,000 gal of sludge/dayCosts:$4.80 per 1000 gallons & an additional $240 per 50,000 gallons Totaling: $490/day
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Filtration: Granular Rapid FiltrationArea per filter bed: 450ft2
99% removal
Detention Time: 7.5 hrs
Backwash Cycle: 15 min
Filter-to-waste: 10 min
Total Cycle: 8 hours
Recommend using 4 filters
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20+ Disinfection
Ozonation• Best at removal of bacteria, viruses, etc. when
compared to chlorine and UV- No THMs- Only byproduct is bromate
- Only a problem in areas with high concentrations of bromine- Delivery system system: LOX- Recommended Initial Concentrations:
- Use 1.5 mg/L for effluent 0.5 mg/L- Daily LOX: 470 gal / day
- 1 Horizontal tank for Storage: 10,000 gal- Weekly use: 3300 gal LOX- Storage for 3 weeks
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Disinfectant continued:
Contact Chamber Design:
Volume Required: 243000 gal ( 3250 cf)
For HDT of 10 min
Height: 20 ft
Floor: 13 ft x 13 ft
10 chambers
Total volume: 3380 cf
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Disinfectant continued:
Ozone Generator:
Produces up to 1320 lb ozone / day
Dimensions:- Depth: 7.38 ft- Width: 6.23 ft- Height: 7.08 ft
Floor Space: 46 sf
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Disinfectant continued:- Residual Disinfectant:
- Ozone does not leave a residual
Needed for microbial growth in pipes
Suggested: 0.01 mg/L residual disinfectant
Chlorine Gas0.5 mg/L initial concentration
Need 150 lb chlorine gas / day
<< EPA maximum residual goal of 4 mg/L- Three week supply can be stored in 21 tanks
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+FluoridationSodium fluorosilicate:• Easy to store• Safer than alternatives
• fluorosilicic acidEPA MCL: 4mg/LEPA secondary MCL: 2mg/L
For areas with high naturally-occurring fluoride
Make 2mg/L target value• 980 lb fluorosilicate / day
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Clear Well:Storage: 25% of Daily flow 9 MGDCST Industries offers construction of ANSI and AWWA approved clearwell storage tanks
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Plant Design:
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+IV. INNOVATION
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+SOLAR PANELS:
Monthly Power used by pumps: 382,500 kWhMonthly Power cost: $5640
Monthly Power supplied by 1 SolarWorld Panel unit: 190 kWh
Number of Units to combat pump power consumption: 3478 units
One-time cost of panels: $272/unit $815,900
Time to payoff: 12 years25 year savings: $815,900
Total acreage required: 0.85 acres << 12acres
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+V. COSTS
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Cost Analysis:
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Overall Bill: $24,699.52Due: May 15th
projected: $29,206.73
Budget Used:85%
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15$0.00
$5,000.00
$10,000.00
$15,000.00
$20,000.00
$25,000.00
$30,000.00
$35,000.00
PH&J Consultants' Cost Progress
Projected CostsActual Costs
Week
Cost
($)
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+ANY QUESTIONS
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