LITTLETON/ENGLEWOOD DEWATERING FACILITY

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LITTLETON/ENGLEWOODDEWATERING FACILITY

• I N T R O D U C T I O N

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Collaborative Design

• Needs Assessment - Brainstorming
• Meeting Facilitation

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Design Guidelines

• Permit Limitations
• Safety and Health
• Odor Control
• Resource Optimization
• Project Scope
• Cost Containment
• Participation

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Key Considerations

• Clean Process Area
• Centrifuge
• Sludge Storage
• Truck Loading
• Polymer System
• Conveyance

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Cost Containment

• Product of a Collaborative Design

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New Dewatering Facility

• Location
• Centrate Storage Tank, Covered
• Odor Control
• Centrifuge Room
• Modified versus New
• Room to work

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Pump Room

• PC pumps versus Piston type
• Allowed for Clean operations
• One pump per Centrifuge
• Piping (250 psi)
• Sludge Hoppers - VFDs
• Drains
• Centrate Sample Lines

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Polymer Room

• Truck loading dock
• Large Storage
• Monorail System
• Big Bag
• Tempered Water
• Trench Drains

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Sludge Storage

• Silo
• Capacity
• Automated

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Truck Bay

• Automated Truck Scale
• Optional Loading
• Cleaning

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Centrate Tank

• Reused existing Aeration Basin
• Capital saving of 1,000,000
• Reduced bottleneck
• Reduce struvite build up
• Cleaning made easy

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New Dewatering Facility

• Capital savings of 1,200,000
• Modified existing centrifuges
• Capital savings of 170,000
• Modified existing polymer system
• Capital savings of 400,000 utilizing PC pumps
• O M costs have been reduced by 75,000
  annually. (More to Come)
• Maintenance has been reduced 5 fold
• Lower polymer consumption
• Tempered polymer water-2 solids increase

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New Dewatering Facility

• Reduced dewatering shift from 16.5 hours to 9.5
  hours
• Truck load out from 16 hours to 15 minutes
• Truck loaded to specification each time
• Target and maintain consistent solids output
• Automation from 2 operators at a 16 hour shift,
  to 1 at 9.5 hours
• Sludge storage capacity
• Facility provides for very clean operation