Norman Wastewater Treatment Plant, OK, USA
Key Data:
Existing treatment elements
Completely mixed activated sludge system; high rate trickling filters; rotating biological contactors
Capacity
30,000m³/d (original); 45,000m³/d (Phase 1); 100,000m³/d (final)
Project costs
$12.5 million (Phase 1); $5 million (current)
Bar Screens - New Headworks
Type and number
2 x step screen
Capacity (each)
272,000m³/d
Channel width
1.8m
Channel height
3m
Max. water EL upstream
2.4m
Installation angle
53°
Open screen area
73%
Vertical screen height
4.2m
Bar Screens - Westside Lift Station
Type and number
2 x step screen
Capacity (each)
75,000m³/d
Channel width
1.2m
Channel height
4.5m
Max. water EL upstream
3m
Installation angle
75°
Open screen area
73%
Pumps
Type and number
3 x vertical, close-coupled centrifugal with submersible motors; fourth to be installed in future
Size
75hp
Firm capacity (one pump out of service)
51,000m³/d (77,000m³/day with fourth pump)
Project Timeline:
Project authorisation
1997
Work began
August 1998
Phase 1 completion
May 2000
Current phase preliminary design approval
24 April 2001
Final design approval
11 September 2001
Tender date
20 March 2003
Contract awarded
22 April 2003
Construction began
8 June 2003
Original scheduled completion
13 August 2004
Revised completion date
18 January 2005
Key Players:
Plant owners
Norman Utilities Authority
Grant funding
Federal Environmental Protection Agency via the Oklahoma Water Resources Board
Project design
Camp Dresser and McKee
Main contractor
Ideal Construction (current phase); BRB Contractors (earlier work)
Aeration system
Sanitaire
Centrifugal blowers
Lamson
Secondary clarifiers
Westech
RAS/WAS pump station
Fairbanks Morse
Electrical
Oil Capital Electric
Instrumental
Bauman
Other contractors
Midwest Demolition; Stowers; Tarver; American Fence; Omni Mechanical Services; Atlas Foundations; Hansen Masonry; Peterson; Southwestern Roofing
