GE P&W Electrodialysis Reversal (EDR) - Manual

Fact Sheet
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FS1242EN.doc Jul-13
GE 2020 EDR Systems
Electrodialysis Reversal Technology
The GE 2020 Electrodialysis Reversal (EDR) product
is a proven and reliable desalination technology
that has been in service in a variety of industrial
and public infrastructure applications.
EDR Features
 Use of Carbon Electrodes results in no gas pro-
duced and no separate electrode stream
required.
 High Water Recovery, up to 94%
 Salt Removal of 50 to 95%
 Polarity Reversal self-cleaning with electricity
 Free chlorine tolerance
 Tolerance to moderate suspended solids
 Adjustable product water performance without
blending
 Ability to disassemble stacks for inspection
 Silica tolerance
EDR Benefits
 Efficient use of scarce water resources
 Low pretreatment requirements and costs
 Low chemical consumption costs
 Long membrane life, typically 10+ years
 Strong ability to recover from less than ideal
feed water quality
Standard Design and Scope of Supply
 MK-IV-2 EDR stacks with GE Carbon Electrodes
 Cartridge filter
 Concentrate Recirculation pump with VFD
 GE Fanuc Micro PLC & 12” (30 cm) color Quick
Panel HMI
 Full Owners Operation & Maintenance Manual,
Factory Acceptance Test results and Stack Per-
formance Test results
Instrumentation - Transmitters
Flow ............................ Product Outlet, Concentrate Outlet
Pressure ................................ Cartridge Filter Inlet & Outlet
Concentrate, Recirculation
Pump Outlet, Product Outlet
Conductivity ....................................... Inlet & Product Outlet
Operating Parameters
Water Recovery ....................................................... Up to 94%
Salt Removal .......................................................... 50% to 95%
Silica Removal ...................................................................... none
Temperature ................................... 40 to 100ºF (4 To 38ºC)
Maximum Feed Pressure .............................................. 50 psi
Input Voltage ................................................. 480VAC/3/60Hz
Feed Water Requirements
Typical Feed TDS ........................ 100 to 3,000 ppm (mg/l)
Maximum Feed TDS ............................. 12,000 ppm (mg/l)
Silica (Reactive) .......................................................... unlimited
pH .......................................................................................... 2 to 10
SDI (5 min. test) ........................................................................ 10
Turbidity ....................................................................... < 0.5 NTU
Free Chlorine (continuous) ........................ 0.5 ppm (mg/l)