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In purified water equipment, both reverse osmosis RO and electrodeionization EDI have the function of desalting and purifying water quality.
In purified water equipment, the EDI device is generally located behind the RO device
.
Reverse osmosis (RO) is the selective interception of the reverse osmosis membrane through which water molecules permeate.
Under the pressure higher than the osmotic pressure of the solution, the water molecules continuously pass through the membrane, while the heavy metal ions, which are smaller than the pore size of the reverse osmosis membrane, Organic matter, bacteria, viruses, etc.
are trapped on the water inlet side of the membrane, so as to achieve the purpose of separation and purification
.
The whole working principle adopts the physical method without adding any bactericides and chemical substances, so there will be no chemical changes
.
Figure 1.
Jingderui purified water equipment EDI is also known as continuous electric desalination technology.
It scientifically integrates electrodialysis technology and ion exchange technology.
The ions play an exchange role, and the directional migration of ions in the water is realized under the action of the electric field, so as to achieve the deep purification and desalination of the water.
In this process, the hydrogen ions and hydroxide ions generated by the water electrolysis can be filled with the resin for continuous regeneration.
High-quality purified water can be continuously produced without stopping the use of acid-base regeneration resin
.
That is to say, EDI technology can not only purify water quality, but also change the situation that only mixed bed can be used to prepare purified water
.
Generally, periodic regeneration is required when the mixed bed is working, and a large amount of chemicals (acid and alkali) and pure water are used in the regeneration process, which will cause certain environmental problems
.
The EDI system is simpler and more continuous than the mixed bed operation.
At the same time, the EDI process produces very little discharge, and most of the discharged water can be recycled to the inlet of the previous water treatment system, reducing environmental pollution
.
From this, we can see that both RO and EDI in the purified water equipment shoulder the heavy responsibility of water desalination and purification, and EDI has the effect of deep desalination, which can obtain purer water quality than RO produced water, which is why it is necessary to prepare more For high-quality purified water, the RO+EDI mode is generally used, and the reason why EDI is placed behind the RO device
.
In purified water equipment, the EDI device is generally located behind the RO device
.
Reverse osmosis (RO) is the selective interception of the reverse osmosis membrane through which water molecules permeate.
Under the pressure higher than the osmotic pressure of the solution, the water molecules continuously pass through the membrane, while the heavy metal ions, which are smaller than the pore size of the reverse osmosis membrane, Organic matter, bacteria, viruses, etc.
are trapped on the water inlet side of the membrane, so as to achieve the purpose of separation and purification
.
The whole working principle adopts the physical method without adding any bactericides and chemical substances, so there will be no chemical changes
.
Figure 1.
Jingderui purified water equipment EDI is also known as continuous electric desalination technology.
It scientifically integrates electrodialysis technology and ion exchange technology.
The ions play an exchange role, and the directional migration of ions in the water is realized under the action of the electric field, so as to achieve the deep purification and desalination of the water.
In this process, the hydrogen ions and hydroxide ions generated by the water electrolysis can be filled with the resin for continuous regeneration.
High-quality purified water can be continuously produced without stopping the use of acid-base regeneration resin
.
That is to say, EDI technology can not only purify water quality, but also change the situation that only mixed bed can be used to prepare purified water
.
Generally, periodic regeneration is required when the mixed bed is working, and a large amount of chemicals (acid and alkali) and pure water are used in the regeneration process, which will cause certain environmental problems
.
The EDI system is simpler and more continuous than the mixed bed operation.
At the same time, the EDI process produces very little discharge, and most of the discharged water can be recycled to the inlet of the previous water treatment system, reducing environmental pollution
.
From this, we can see that both RO and EDI in the purified water equipment shoulder the heavy responsibility of water desalination and purification, and EDI has the effect of deep desalination, which can obtain purer water quality than RO produced water, which is why it is necessary to prepare more For high-quality purified water, the RO+EDI mode is generally used, and the reason why EDI is placed behind the RO device
.
