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F. Wayne Hill Water Resources Center Extension

Treatment Capacity

Phase I - 75,000m³/d; phase II - 152,000m³/d; final - 228,000m³/d

3D Modelling Package

AutoPlant

Project Cost

$350m

<b>Phase II Permit Limits:</b>

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

152,000m&#179;/d (monthly average); 190,000m&#179;/d (weekly average)

<b>Membrane System:</b>

Ultra-Filter Pore Size

0.02&#181;m (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

<b>Inclined Plate Separators:</b>

Installation

72 stainless steel plate packs in 4 sedimentation basins

Effective Flow Rate Range

55l/min to 660,000l/min

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

Client

Gwinnett County

Operator

Department of Public Utilities (Gwinnett County)

Design and construction management

CH2M Hill, Jordan James &amp; Goulding and Precision Planning

Site Preparation

Beers Skanska

Biological Facilities

Pizzagalli / Western Summit (JV)

Storage Facilities

Skanska

Tertiary Treatment Membranes

GE Water &amp; Process Technologies

3D Modelling Software

Bentley

Clarifiers and Inclined Plate Separators

Siemens Water Technologies
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