F. Wayne Hill Water Resources Center Extension, GA, USA
Key Data:
Treatment Capacity
Phase I - 75,000m³/d; phase II - 152,000m³/d; final - 228,000m³/d
3D Modelling Package
AutoPlant
Project Cost
$350m
Phase II Permit Limits:
COD
25mg/l
NH3
0.5mg/l
Phosphorus
0.13mg/l (original); 0.1mg/l (EPD 2005); 0.08mg/l (compromise agreement)
Turbidity
1 NTU
Faecal Coliforms
23 CFU/100ml
Maximum Flow
152,000m³/d (monthly average); 190,000m³/d (weekly average)
Membrane System:
Ultra-Filter Pore Size
0.02µm (nominal)
Minimum Driving Pressure
3m water column (30kPa)
Operating Mode
Direct (dead-end) filtration with periodic air and water backwash
Final Installed Capacity
1,800l/s
Inclined Plate Separators:
Installation
72 stainless steel plate packs in 4 sedimentation basins
Effective Flow Rate Range
55l/min to 660,000l/min
Project Timeline:
Commencement
March 2000
Plant Design Modelling Wins Award
July 2005
Compromise Agreement Reached
April 2005
DNR Approve Change to Discharge Rules
October 2005
Completed
2006
Key Players:
Client
Gwinnett County
Operator
Department of Public Utilities (Gwinnett County)
Design and construction management
CH2M Hill, Jordan James & Goulding and Precision Planning
Site Preparation
Beers Skanska
Biological Facilities
Pizzagalli / Western Summit (JV)
Storage Facilities
Skanska
Tertiary Treatment Membranes
GE Water & Process Technologies
3D Modelling Software
Bentley
Clarifiers and Inclined Plate Separators
Siemens Water Technologies
