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OVERVIEW
ULTRA-PURE WATER WITHOT CHEMICALS
EDI combines ion exchange resin, special membranes and an electric field to remove the last dissolved ions from RO water. The electric current regenerates the resin continuously, so there is no need to store or handle acid and caustic chemicals.​
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EDI is installed after RO and produces a steady flow of high-purity water for boilers, laboratories, pharmaceutical and precision manufacturing.
TYPICAL USES
- Boiler feed water for power plants
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- Pharmaceutical and laboratory water
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- Electronics and precision manufacturing
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- Industrial process water
HOW IT WORKS
INSIDE THE EDI SYSTEM
Well water is pre-treated and filtered, then pushed through RO membranes at high pressure. Clean water goes to storage, and the concentrate is safely discharged.
STEP 1
Raw water​
Tap, well, river or sea
STEP 1
RO permeate
Water already treated by RO
STEP 2
EDI modules
Resin, membranes and electric field
STEP 1
Raw water​
Tap, well, river or sea
STEP 3
Ion removal
Remaining ions are pulled out
STEP 1
Raw water​
Tap, well, river or sea
STEP 4
Continuous regeneration
Electric current, no chemicals
STEP 1
Raw water​
Tap, well, river or sea
STEP 5
High-purity water
Ready for boilers, labs and process
KEY FEATURES
WHY CHOOSE OUR EDI SYSTEMS
NO CHEMICALS
No acid or caustic storage, handling or waste.
LOW RUNNING COSTS
Small footprint, easy to add after existing RO.
CONTINUOUS OPERATION
No stops for regeneration.
STABLE HIGH PURITY
Consistent water quality, measured online.
COMPACT MODULES
Small footprint, easy to add after existing RO.
AUTOMATIC CONTROL
Online resistivity monitoring with alarms.
APPLICATIONS
WHERE EDI SYSTEMS ARE USED