RO System Deionized Water Plant Machine With EDI For Selling
Electric deion (EDI) system is a kind of scientific water treatment
technology which purifies the water quality through the selection
and
action of ion by exchange membrane.Electrodialysis device between a
pair of electrodes, usually by Yin film, Yang film and the
partition (a, b)
multiple groups of alternating arrangement, constitute a
concentrated chamber and a light chamber (that is, cations can pass
through the Yang
film, anions can pass through the Yin film).Cationic ions migrate
to the negative electrode in the fresh chamber and are trapped by
the negative
membrane in the concentrated chamber.Anionic migration towards the
positive direction of Yin membrane in water, be strong chamber of
Yang
membrane intercept, such by light chamber on the number of ions in
water gradually reduce, become fresh water, and thick the water
chamber,
due to the ion of Yin and Yang were strong chamber, dielectric ion
concentration rising, become thick water, thus achieve the purpose
of
desalination, purification, concentration and refining
Since the industrialization of EDI membrane reactor technology in
1986, thousands of EDI systems have been installed all over the
world,
especially in pharmaceutical, semiconductor, power and surface
cleaning industries. At the same time, EDI has been widely used in
the fields of
wastewater treatment, beverage and microorganism.EDI equipment is
used in reverse osmosis system, replace the traditional mixed bed
ion
exchange technology (mb-di) to produce stable ultra-pure
water.Compared with mixed ion exchange technology, EDI technology
has the
following advantages:(1) stable water quality Easy to achieve
automatic controlWill not stop because of regeneration(4) do not
need chemical
regenerationEDI systemEDI system(5) low operation costThe workshop
area is smallNo sewage dischargeWorking principle of EDI:EDI module
forms EDI unit by filling ion exchange resin between negative and
positive ion exchange membrane.The working principle of EDI is
shown in the
figure.EDI module separates a certain number of EDI units with grid
board to form concentrated water chamber and fresh water
chamber.And a
negative/positive electrode is set at both ends of the unit
group.Driven by direct current, the anions and anions in the fresh
water flow flow
through the anion exchange membrane enter the concentrated water
chamber respectively and are removed in the fresh water chamber.The
water that passes through the chamber carries the ions out of the
system and becomes the concentrated water.EDI equipment generally
USES
secondary reverse osmosis (RO) pure water as EDI feed
water.Secondary RO pure water conductivity under 25 ℃ in 5-0.5 mu
S/cm
(depending on the size of the primary RO water conductivity,
secondary RO water conductivity will be a change, but the secondary
RO water
should not higher than the normal range), under 25 ℃ after dealing
with the EDI system of pure water resistivity can be up to 18, 25 M
Ω, cm or
higher (theory of PH of 7 absolutely pure water resistivity of
about 18.29 M Ω · cm, with ultrapure water resistivity is about
18.248 M Ω · cm, in
other words, properly handled the EDI water production in the
resistivity of the indicators,It can reach the standard of
ultra-pure water
completely., according to the process water usage and actual system
configuration Settings, EDI system is widely used in the
preparation of
resistivity requirements in 10 to 18 M Ω · cm (25 ℃) of pure water.
EDI system Technical Specification
| Model | Capacity (T/H) | Power (KW) | Recovery (%) | One stage finished water conductivity | Two stage finished water conductivity | EDI system finished water conductivity | Raw water conductivity |
| RO-500 | 0.5 | 0.75 | 55-75 |
≤10 |
2-3 |
≤0.5 |
≤300 |
| RO-1000 | 1.0 | 2.2 | 55-75 |
| RO-2000 | 2.0 | 4.0 | 55-75 |
| RO-3000 | 3.0 | 5.5 | 55-75 |
| RO-5000 | 5.0 | 7.5 | 55-75 |
| RO-6000 | 6.0 | 7.5 | 55-75 |
| RO-10000 | 10.0 | 11 | 55-75 |
| RO-20000 | 20.0 | 15 | 55-75 |
EDI system More Pictures
