West County Energy Center CASE STUDY Florida Power and Light

CASE STUDY
Florida Power and Light
Loxahatchee, FL
PROVEN
TECHNOLOGY
EXTENSIVE
EXPERIENCE
CUSTOM
ENGINEERED
COMPACT
West County
Energy Center
Circulating Water Makeup Treatment
HEADWORKS | BIOLOGICAL | SEPARATIONS | MEMBRANES | OXIDATION-DISINFECTION | BIOSOLIDS | INDUSTRIAL SYSTEMS
Florida Power and Light – West County Energy Center
Circulating Water Makeup Treatment
Quick Facts
Application
Flow Rate
Clarifier Type
Softening
14,000 gpm per unit
DensaDeg® Clarifier/Thickener
Effluent Quality
Turbidity <5 NTU
Calcium < 160 mg/L as CaCO3
SYSTEM BLOCK DIAGRAM
Surface
Water or
Well Water
Ph – 7.5 –
8.0
14,000 gpm
Lime
DensaDeg Clarifier/Thickener
Diameter
45 feet
Rise Rate
11.7 gpm/ft2
Soda Ash
Equivalent Conventional Clarifier
Diameter
120 feet
Rise Rate
1.25 gpm/ft2
Coagulant
Polymer
DensaDeg®
Reactor
and
Clarifier/
Thickener
Background
Florida Power & Light’s (FP&L) new 2,400 MW combined cycle gas
turbine plant, West County Energy Center, would require 14,000 gpm of
softened water. Unfortunately, water supplies in the area were limited
and they would be required to instantaneously switch to brackish well
water from the Floridan Aquifer when surface water was not available.
DensaDeg®
Reactor
and
Clarifier/
Thickener
Surge
Tank
Degremont Technologies Solution (See block diagram)
Degremont designed the System around its patented DensaDeg®
Clarifier/Thickener. The System needed to be compact and it needed
to be able to react to sudden changes in influent quality. Redundancy
was added by using two 100% capacity units. IDI also designed and
supplied the chemical feed systems (including silos for lime and soda
ash) as well as the solids dewatering system.
CONVENTIONAL CLARIFIER
Customer Benefits
(120’ Diameter)
DensaDeg
In addition to meeting all of the required performance parameters, the
System provided the following additional benefits:
Extremely Compact –The DensaDeg will easily fit in the
space of one conventional clarifier (see side)
• Influent Variability – The DensaDeg is able to handle the extreme
variability of instant transfers between well and surface water.
• Dense Sludge – FP&L avoided the need for an additional thickener
unit because the DensaDeg generates sludge >15% solids.
INFILCO DEGREMONT, INC.
8007 DISCOVERY DRIVE, RICHMOND, VA 23229
804 756-7600 (TEL) ● 804 756-7643 (FAX)
WWW.DEGREMONT-TECHNOLOGIES.COM
Reactor – 25’ diameter
Clarifier – 45 ‘ diameter