Water Treatment EDI Pure Water Purification System

Product Description

Electrodeionization Edi Ultra Pure Water System

EDI (Electrodeionization) is a kind of pure water production technology which combines ion exchange and ion exchange membrane with ion electric transfer technology. It is composed of electrodialysis and ion exchange technology, using high voltage electrodes at both ends to make the charged ions transfering and the ion will be acceleratedly removed through ion exchange resin and selective resin, so as to achieve the purpose of water purification. 
 
How does it work?
An EDI stack has the basic structure of a deionization chamber. The chamber contains a ion exchange resin, packed between a cationic exchange membrane and a anionic exchange membrane. Only the ions can pass through the membrane, the water is blocked.
When flow enters the resin filled diluiting compartment, several processes are set in motion. Strong ions are scavenged out of the feed stream by the mixed bed resins. Under the influence of the strong direct current field applied across the stack of components, charged ions are pulled off the resin and drawn towards the respective, oppositely-charged electrodes. In this way these charged strong-ion species are continuously removed and transferred in to the adiacent concentrating compartments. 
As the ions go towards the membrane, they can pass through the concentration chamber (see figure) but they cannot reach the electrode. They are blocked by the contiguous membrane, that contains a resin with the same charge.
 
Advantages:
1.Simple and continuous operation
2.Chemicals for regeneration completely eliminated
3.Cost effective operation and maintenance
4.Low power consumption
5.Non pollution, safety and reliablility
6.It requires very few automatic valves or complex control sequences that need supervision by an operator
7.It requires little space
8.It produces high pure water in a constant flow
9.It provides complete removal of dissolved inorganic particles
10.In combination with reverse osmosis pre-treatment, it removes more than 99.9% of ions from the water
 
Applications
1.Reuse of residual water in food and beverages industry
2.Chemical production
3.Biotechnology
4.Electronics
5.Cosmetic
6.Laboratories
7.Pharmaceutical industry
8.Boiler Feed Water
 
EDI Modules are usually used after two pass ro systems,two pass ro systems will remove 99% impurities from the water,EDI will remove the rest ions except H2O.Below is two pass ro sytems's pictures and the complete operating process diagram of the  two pass ro system and EDI.

1. Raw water pump-- provide the pressure to quartz sand filter/active carbon filter.
2. Multi-medium filter-- get rid of turbidity, suspended matter, organic matter, colloid, ect
3. Actived carbon filter--Remove the color, free chloride, organic matter, harmful matter, ect.
4. Water softener--exchange "ions" of calcium and magnesium with the most common and easiest method.
5. Security filter--prevent large particles, bacteria, viruses into RO membrane, accuracy is 5um.
6. High pressure pump-- Provide the high pressure to RO membrane.
7. 2# RO membrane-- remove more than 99% ions, bacteria, salt, microorganism, heavy ions, colloid,emdotoxin and other particles in the water.
8. EDI membrane-- produce more than 15MΩ.cm ultra pure water.

Company brief introduction
We Ewater are Water treatment product and service provider, located in Yixing, Wuxi China,  which gathers 6 0 0 manufacturers of environment protection products, famous in China as "City of Environment Protection Products".
We help customers to select and purchase the high quality and cost-effective products among hundreds of thousands of manufacturers in water treatment field in China. We have one hundred suppliers as our partners, specially, there are hundreds of companies specialized in water treatment are located in the same area as our company located. 
We have sister company "Jieming International Trading" in Dubai, U A E, provide water treatment products and services for Middle East countries since 2 0 0 5.
Our many years experience and professional team in water treatment field give us the advantages such as:
Helping buyers to choose very suitable products among so many manufacturers;
We accept customized orders based on their needs, whatever the quantity or model is;
We offer fast delivery upon customers' requests by all means, such as air freight, courier with an affordable cost;
We provide one-stop service for product sourcing, purchase, export, delivery, warranty after sales, all in one stop, reliably and efficiently.
In the past 4 years, we have supplied and serviced hundreds of clients in 8 0 countries all over the world.
Our mission is:
Empower our customers buying water treatment products from China as easy as buying from their hometown.

FAQ
Q1.Are you a factory or trading company?
A1:We are a professional water treatment equipment and accessories manufacturing factory that set up for over 10 years. We always pay attention to the development of the industry!We can give a discount according to the quantity of the machine you purchase.
B1:At the same time,we take effective measures to control the production process for ensuring the quality of products. Our products are certified.And we can supply SGS,ISO9001,CE certification.
Q2.What products does your company offer by yourself?
A3:We are specialized in reverse osmosis equipment,ultra filtration equipment,EDI electric desalination system,sea water
desalination system,water treatment spares,water treatment accessories etc.
Q3.How can I know your machine works well?
A4:Before delivery,we shall test the machine working condition for you.
Q4.What's the information you need to know before order?
A1:What's the capacity you need?
B1:What's your application ? 
C1:What's your voltage and HZ?