EDI是水處理技術上一項革命性技術。該技術應用電再生離子交換除鹽工藝取代傳統混合離子交換除鹽工藝DI。通過離子交換樹脂及選擇性離子膜達到高脫鹽效果，與反滲透結合的聯合工藝使產水水質可達10-15MΩ .CM的高規格產水。
EDI采用標準組件設計可根據要求組合成任意系統，產水量可達1-450m3/h。

工作原理
供給原水進入EDI系統，主要部分流入樹脂／膜內部，而另一部分沿膜板外側流動，以洗去透出膜外的離子。
樹脂截留水中的溶存離子。
被截留的離子在電極作用下，陰離子向正極方向運動，陽離子向負極方向運動。
陽離子透過陽離子膜，排出樹脂／膜之外。
陰離子透過陰離子膜，排出樹脂／膜之外。
濃縮了的離子從廢水流路中排出。
無離子水從樹脂／膜內流出。

EDI is a revolutionary technology for the water treatment. This technology uses the demineralization process of electrical regeneration ion exchange instead of traditional demineralization process of mixed ion exchange DI. The resin and selective ion membrane can reach high desalination effect by exchanging the ion, and if the process is combined with reverse osmosis , the water quality can be up to 10-15M Ω.CM.
EDI uses the standard modules in design and can be assembled into arbitrary system according to the requirement,water output can be up to 1-450m3/h.
Working principle
The supplied raw water enters into EDI system,main portion flows into resin/membrane,ａnd the other portion flows along the outboard of the membrane plate,in order to clean the ion outside the membrane.
Resin captures undissolved ion
The captured ion is forced by the electrode,anion moves to anode,ａnd cation moves to cathode.
Cation permeates cation membrane,ａnd discharges from resin/membrane.
Anion permeates anion membrane,ａnd discharges from resin/membrane.
Concentrated ion discharges from the wastewater flow channel.
Non- ion water discharges from resin/membrane.