littleton/englewood dewatering facility i n t r o d u c t i o n

LITTLETON/ENGLEWOODLITTLETON/ENGLEWOODDEWATERING FACILITYDEWATERING FACILITY

I N T R O D U C T I O NI N T R O D U C T I O N

Collaborative Design

Needs Assessment - Brainstorming

Meeting Facilitation

Design GuidelinesPermit LimitationsSafety and HealthOdor ControlResource OptimizationProject ScopeCost ContainmentParticipation

Key Considerations

Clean Process AreaCentrifuge Sludge StorageTruck LoadingPolymer SystemConveyance

Cost Containment

Product of a Collaborative Design

New Dewatering Facility

Location

– Centrate Storage Tank, Covered

– Odor ControlCentrifuge Room

– Modified versus New

– Room to work

Pump RoomPC pumps versus Piston type

– Allowed for Clean operations

– One pump per Centrifuge

– Piping (250 psi)

– Sludge Hoppers - VFD’sDrainsCentrate Sample Lines

Polymer RoomPolymer RoomTruck loading dockLarge StorageMonorail SystemBig BagTempered WaterTrench Drains

Sludge StorageSilo

–Capacity

Automated

Truck BayAutomated Truck Scale

Optional Loading

Cleaning

Centrate Tank

Reused existing Aeration Basin

– Capital saving of $1,000,000

– Reduced bottleneck

– Reduce struvite build up

Cleaning made easy

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

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