Electrodeionization EDI Water Treatment System remove ions and ionized matter with electrical potential and electrically active media.
EDI Water System can be referred to as “electrolysis moderated ion exchange.” An EDI cell consists of MBIX resins sandwiched between an
anion-exchange membrane (AEM) on one side and a cation-exchange membrane (CEM) on the other side, as shown in below .

An EDI water treatment plant module consists of multiple cell pairs (up to 240 cell pairs) stacked end-to-end. The resin spacers in thick
cells are 8–10 mm and 3 mm in thin cells in edi water system. DC power is applied to a positive electrode (anode) located on one end of the
module and to a negative electrode (cathode), located on the other end at edi water treatment plant. The ion exchange (IX) membrane is ion selective,
which means that the cation exchange membranes (CEM) allow only cations to pass through, and anion-exchange membranes (AEM) allows only anions to pass through.

Since the polymer is hydrophobic, it is not permeable to water.So it is very useful for corrosion inhibitor water treatment. Feed water enters the product
compartments in parallel, and flows from top to bottom. The product stream flow rate may be increased or decreased within the range given in the specifications
to meet the changing usage requirements. Increasing the product water flow rate above the specified range decreases the product water quality. There are two
modes of operation: constant voltage and constant current. Because of the direct current that is applied perpendicular to the flow by the electrodes,
the anions are driven toward the anode through the selectively permeable AEM.

TK-EDI-2T/H Machine Description	Parts brand/place of origin	Material	Quantity	Note
Raw water pump	CNP,CM4-50	SS304	1 Set	1.1KW
Sand filter	φ600×1800MM	SS304	1 Set
Carbon filter	φ600×1800MM	SS304	1 Set
High pressure pump	CNP,CDLS4-16	SS304	1 Set	3.0KW
Two-stage reverse osmosis pure water device Water production: 2.0m3 / h, Desalination rate: 96 ～ 99%	GE,AG4040	polyamide	2PCS
EDI electrodeionization device Water production: 2.0m3 / h, Water quality: ≥10M	EDI membrane block: 2000L / H		1PCS
Electronic control system	Siemens		1Set

Standard Futers	Available Options
Programmable PLC Control	Automatic Flush
Motor Starter	Ozone Generator
Raw Water Feeding/Booster Pump	UV Sterilizer
Stainless Steel Cartridge Filter Housing	Chemical Dosing
FRP Membrane Housing	pH Control Monitor
Mitsibushi Processor Control	ORP Control Monitor
Low Pressure Switch	Remote Control
High Pressure Switch	Pretreatment System
Liquid Filled Pressure Gauge	Post Deionization Unit
Stainless Steel 304 Frame	CIP Membrane Cleaning System
Permeate Conductivity Monitor	Touch Screen Control
Raw Water Conductivity Monitor	Tank Level Switch
Membranes	Customer Logo
Control Valves	Double Pass RO
Stainless Steel/UPVC Piping
EDI Module

 
Advantage of 2-pass RO + EDI Module for reverse osmosis electrodeionization plant
1.    Lower conductivity = higher EDI quality
2.    Lower CO2 = higher silica removal
3.    Ppm-level contaminants means infrequent EDI cleaning
4.    Higher rated flows for EDI

5.    Reduce chemical cost for corrosion inhibitor water treatment