GE P&W Electrodialysis Reversal User 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 Performance Test results
Instrumentation - Transmitters
Flow ............................ Product Outlet, Concentrate Outlet
Pressure ................................ Cartridge Filter Inlet & 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)
Concentrate, Recirculation
Pump Outlet, Product Outlet
TOC ..................................................................... < 15 ppm (mg/l)
MODEL
2020-2L-2S
2020-2L-3S
2020-4L-2S
2020-4L-3S
Flow Rates
Product Flow Nominal
280 gpm
63.6 m3/h
260 gpm
59.1 m3/h
560 gpm
127.2 m3/h
520 gpm
118.2 m3/h
Product Flow Range
165 to 325 gpm
37.5 to 73.8 m3/h
165 to 270 gpm
37.5 to 61.3 m3/h
325 to 655 gpm
73.8 to 148.8 m3/h
325 to 545 gpm
73.8 to 123.8 m3/h
Concentrate Outlet Flow
Depends on recovery and product
Electrode Outlet Flow
2.2 gpm
8.3 lpm
2.5 gpm
9.5 lpm
4.3 gpm
16.3 lpm
5.0 gpm
19 lpm
General Information
Number of Stacks
4 6 8
12
Number of Lines
2 2 4
4
Number of Stages
2 3 2
3
Type of Stack
MK-IV-2
MK-IV-2
MK-IV-2
MK-IV-2
Dimensions
System Dimensions
Width x Length
90” x 309”
(2.3 x 7.9 m)
90” x 375”
(2.3 x 9.5 m)
169” x 493”
(4.3 x 12.5 m)
169” x 625”
(4.3 x 15.9 m)
Inlet Piping
4” (10 cm)
4” (10 cm)
6” (15 cm)
6” (15 cm)
Product Outlet Piping
4” (10 cm)
4” (10 cm)
6” (15 cm)
6” (15 cm)
Off-Spec Outlet Piping
4” (10 cm)
4” (10 cm)
6” (15 cm)
6” (15 cm)
Electrode Outlet Piping
3” (8 cm)
3” (8 cm)
3” (8 cm)
3” (8 cm)
Concentrate Outlet Piping
1.5” (4 cm)
1.5” (4 cm)
2” (5 cm)
2” (5 CM)
Note: all piping sizes are provided for nominal flow rates at 85% recovery.
Electrical
Maximum Rectifier Output (Per Stack Basis)
Stage 1
590VDC, 46A
590VDC, 26A
590VDC, 46A
590VDC, 26A
Stage 2
518VDC, 18A
518VDC, 14A
518VDC 18A
518VDC, 14A
Stage 3 420VDC, 7.5A
420VDC, 7.5A
Connection Requirement
(Includes Feed pump, which may
be supplied by others)
140 KVA
107 KVA
276 KVA
209 KVA
Typical Power consumption
2 – 4 kWh/1,000 gallons of product water
Performance, number of stages and cell pairs, recovery and power consumption are dependent on inlet feed water
quality and temperature. A Watsys projection must be completed by an authorized GE Water & Process Technologies
design representative for proper system design & for any performance guarantee to be provided.
COD ....................................................... < 50 ppm (mg/l) as O2
Iron .................................................................... < 0.3 ppm (mg/l)
Manganese, Aluminum ........................... < 0.1 ppm (mg/l)
H2S .................................................................... < 0.1 ppm (mg/l)
Allowable Intermittent Levels:
SDI (5 min. test) ......................................................................... 15
Turbidity ............................................................................2.0 NTU
Free Chlorine .................................................................. 30 mg/l
EDR 2020 2 & 4 Line Standard Systems
Material of Construction
Welded Frame................................... Painted Carbon Steel
Dilute and Concentrate Piping ...................... Sch. 80 PVC
Flanges .................................................................................... ANSI
Concentrate Pump ................... Single-stage Centrifugal
Rectifier ......................................................................... NEMA 3R
Control Panel ................................................................. NEMA 4
Quality Assurance
Certification ............................................................................... UL
Facility ................................................................. ISO 9001:2000
Page 2 FS1242EN
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