CN106115990A - Ultrapure water production system and method - Google Patents
Ultrapure water production system and method Download PDFInfo
- Publication number
- CN106115990A CN106115990A CN201610649547.3A CN201610649547A CN106115990A CN 106115990 A CN106115990 A CN 106115990A CN 201610649547 A CN201610649547 A CN 201610649547A CN 106115990 A CN106115990 A CN 106115990A
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- Prior art keywords
- mcdi
- unit
- water
- ultra
- exchange membrane
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Abstract
The invention discloses a kind of ultrapure water production system, this system includes: pretreatment unit, for water inlet is carried out pretreatment；MCDI device, for carrying out deionization process by pretreated water；Automatic control device, for detecting the water outlet conductivity of MCDI device, and controls MCDI device；Reverse osmosis unit, for carrying out reverse-osmosis treated to the water outlet of automatic control device；Decontaminating apparatus, for the water outlet disinfection to reverse osmosis unit, obtains ultra-pure water.The invention also discloses a kind of ultra-pure water preparation method.The reverse osmosis membrane of the present invention is long for service life, reduces preparation cost.
Description
Technical field
The present invention relates to ultra-pure water preparing technical field, particularly relate to a kind of ultrapure water production system and method.
Background technology
Along with development in science and technology, current multiple industries such as electronics, pharmacy, food, chemical industry etc., all to the demand of ultra-pure water by
Cumulative greatly, and stricter to water quality requirement.At present, activated carbon adsorption pretreatment, reverse osmosis are mostly taked in industry
(reverse osmosis, RO) device, continuous electric desalination (Electrodeionization, EDI) device, disinfect etc. flows
Journey.Reverse osmosis unit can go out to anhydrate middle major part ion, and its salt rejection rate is generally 98%-99%, but in this process, reverse osmosis
Permeable membrane uses the cycle short, and when RO fouling membrane, equipment needs to stop cleaning RO film, it is impossible to run continuously.
Membrane capacitance deionization technology (Membrane Capacitive Deionization, MCDI) is a kind of environmental friendliness
Emerging desalination technology, its operation principle is under the effect of electric field, and the negative ions in solution is to the electrode of oppositely charged
Migrate, and through anion and cation exchange membrane, absorption is on electrode material；When extra electric field is reverse, adsorbed ion then can
It is re-released in solution, thus reaches the purpose of electrode regeneration.
Summary of the invention
Goal of the invention: the present invention is directed to the problem that prior art exists, it is provided that a kind of ultrapure water production system and method, instead
Permeable membrane is long for service life, reduces preparation cost.
Technical scheme: ultrapure water production system of the present invention includes:
Pretreatment unit, for carrying out pretreatment to water inlet；
MCDI device, for carrying out deionization process by pretreated water；
Automatic control device, for detecting the water outlet conductivity of MCDI device, and controls MCDI device；
Reverse osmosis unit, for carrying out reverse-osmosis treated to the water outlet of automatic control device；
Decontaminating apparatus, for the water outlet disinfection to reverse osmosis unit, obtains ultra-pure water.
Further, described MCDI device includes that some MCDI unit, each MCDI unit include graphite paper, anode, the moon
Ion exchange membrane, filter, negative electrode and cation exchange membrane, wherein, graphite paper has a two-layer, anode, anion exchange membrane, filter,
Negative electrode and cation exchange membrane are arranged in order, and between two-layer graphite paper.
Further, the electrode of described anode and negative electrode is porous carbon materials.
Further, described MCDI device includes two MCDI unit.
Further, described pretreatment unit is specifically for carrying out sand filtration, multi-medium filtering, softening, chlorination, tune to water inlet
Joint pH, active carbon filtration and degassing process.
Ultra-pure water preparation method of the present invention includes:
Pretreatment unit is used to carry out pretreatment to water inlet；
Use MCDI device that pretreated water is carried out deionization process；Wherein, MCDI device includes two MCDI
Unit；
Electrical conductivity of water after using automatic control device to process deionization detects；When the electrical conductivity of detection reaches
During to predetermined threshold value, by the electrode reversal connection of one of them MCDI unit, another MCDI unit normally works；Electrical conductivity when detection
During less than predetermined threshold value, carry out water outlet；
Use reverse osmosis unit that the water outlet of automatic control device is carried out reverse-osmosis treated；
Use the decontaminating apparatus water outlet disinfection to reverse osmosis unit, obtain ultra-pure water.
Further, described MCDI unit includes that graphite paper, anode, anion exchange membrane, filter, negative electrode and cation are handed over
Changing film, wherein, graphite paper has two-layer, and anode, anion exchange membrane, filter, negative electrode and cation exchange membrane are arranged in order, and position
Between two-layer graphite paper.
Further, the electrode of described anode and negative electrode is porous carbon materials.
Further, described employing pretreatment unit carries out pretreatment to water inlet, specifically includes:
Use pretreatment unit water inlet is carried out sand filtration, multi-medium filtering, softening, chlorination, regulation pH, active carbon filtration and
Degassing processes.
Further, described predetermined threshold value is 30us/cm.
Beneficial effect: compared with prior art, its remarkable advantage is the present invention:
1,1 below μ s/cm can be rapidly reduced to by entering electrical conductivity of water using tap water as water inlet water inlet.
2, low energy consumption, eco-friendly MCDI system are added, so that the water inlet of RO system is reduced to 10-30 μ s/cm,
Significantly reduce the operating load of RO film, extend the service life of RO film, reduce water producing cost.
3, control two MCDI unit by automatization's module, continuous processing can intake, solve electrode in MCDI device
Adsorb saturated after need reversal connection to regenerate, it is impossible to the shortcoming of continuous processing.
Accompanying drawing explanation
Fig. 1 is the system block diagram of an embodiment of the ultrapure water production system of the present invention；
Fig. 2 is the structural representation of an embodiment of the MCDI unit of the present invention.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, the ultrapure water production system described in the present embodiment includes pretreatment unit 1, MCDI device 2, automatically
Change and control device 3, reverse osmosis unit 4 and decontaminating apparatus 5.Wherein, pretreatment unit 1 is for carrying out pretreatment to water inlet, specifically
Process including water inlet being carried out sand filtration, multi-medium filtering, softening, chlorination, regulation pH, active carbon filtration and degassing etc., through pre-
After process, conductivity is about 420-430us/cm.MCDI device 2 is for carrying out deionization process by pretreated water, permissible
Rapidly by the conductivity of water body by being reduced to 20-30us/cm, greatly reduce the operating load of follow-up RO film, enter afterwards certainly
Dynamicization controls device 3.Automatic control device 3 is for detecting the water outlet conductivity of MCDI device 2, and controls MCDI
Device 2, when electrical conductivity is less than 30us/cm, is directly entered in reverse osmosis unit 4.Reverse osmosis unit 4 is for Automated condtrol
The water outlet of device 3 carries out reverse-osmosis treated, now the electrical conductivity in water can be reduced to below 1.0us/cm, finally enter sterilization
Device 5, disinfection, obtain ultra-pure water.
Wherein, MCDI device 2 includes two MCDI unit 20, as in figure 2 it is shown, each MCDI unit 20 includes graphite paper
201, anode 202, anion exchange membrane 203, filter 204, negative electrode 205 and cation exchange membrane 206, wherein, graphite paper 201 has
Two-layer, anode 202, anion exchange membrane 203, filter 204, negative electrode 205 and cation exchange membrane 206 are arranged in order, and are positioned at
Between two-layer graphite paper 201.Wherein, the electrode of anode and negative electrode is porous carbon materials, such as, and CNT, Graphene, charcoal gas
The material such as gel, activated carbon.
Embodiment 2
The ultra-pure water preparation method of the present embodiment is corresponding with the ultrapure water production system of embodiment 1, specifically includes following step
Rapid:
S1, employing pretreatment unit carry out pretreatment to water inlet.
Pretreatment specifically include water inlet is carried out sand filtration, multi-medium filtering, softening, chlorination, regulation pH, active carbon filtration and
Degassings etc. process.After pretreatment, conductivity is about 420-430us/cm.
Pretreated water is carried out deionization process by S2, employing MCDI device.
Wherein, MCDI device includes two MCDI unit.The structure of each MCDI unit is same as in Example 1, no longer
Repeat.MCDI device can rapidly by the conductivity of water body by being reduced to 20-30us/cm, greatly reduce the fortune of follow-up RO film
Row load, enters automatic control device 3 afterwards.
Electrical conductivity of water after deionization process is detected by S3, employing automatic control device；Conductance when detection
When rate reaches predetermined threshold value, by the electrode reversal connection of one of them MCDI unit, another MCDI unit normally works；Electricity when detection
When conductance is less than predetermined threshold value, carry out water outlet.
Wherein, predetermined threshold value is 30us/cm.
S4, employing reverse osmosis unit carry out reverse-osmosis treated to the water outlet of automatic control device.
Electrical conductivity in water can be reduced to below 1.0us/cm by reverse osmosis unit.
S5, the employing decontaminating apparatus water outlet disinfection to reverse osmosis unit, obtain ultra-pure water.
Claims (10)
1. a ultrapure water production system, it is characterised in that this system includes:
Pretreatment unit, for carrying out pretreatment to water inlet；
MCDI device, for carrying out deionization process by pretreated water；
Automatic control device, for detecting the water outlet conductivity of MCDI device, and controls MCDI device；
Reverse osmosis unit, for carrying out reverse-osmosis treated to the water outlet of automatic control device；
Decontaminating apparatus, for the water outlet disinfection to reverse osmosis unit, obtains ultra-pure water.
Ultrapure water production system the most according to claim 1, it is characterised in that: described MCDI device includes that some MCDI are mono-
Unit, each MCDI unit includes graphite paper, anode, anion exchange membrane, filter, negative electrode and cation exchange membrane, wherein, graphite
Paper has two-layer, anode, anion exchange membrane, filter, negative electrode and cation exchange membrane to be arranged in order, and be positioned at two-layer graphite paper it
Between.
Ultrapure water production system the most according to claim 2, it is characterised in that: the electrode of described anode and negative electrode is porous
Material with carbon element.
Ultrapure water production system the most according to claim 2, it is characterised in that: described MCDI device includes that two MCDI are mono-
Unit.
Ultrapure water production system the most according to claim 1, it is characterised in that: described pretreatment unit is specifically for entering
Water carries out sand filtration, multi-medium filtering, softening, chlorination, regulation pH, active carbon filtration and degassing and processes.
6. a ultra-pure water preparation method, it is characterised in that the method includes:
Pretreatment unit is used to carry out pretreatment to water inlet；
Use MCDI device that pretreated water is carried out deionization process；Wherein, MCDI device includes two MCDI unit；
Electrical conductivity of water after using automatic control device to process deionization detects；When the electrical conductivity of detection reaches pre-
If during threshold value, by the electrode reversal connection of one of them MCDI unit, another MCDI unit normally works；When the electrical conductivity of detection is less than
During predetermined threshold value, carry out water outlet；
Use reverse osmosis unit that the water outlet of automatic control device is carried out reverse-osmosis treated；
Use the decontaminating apparatus water outlet disinfection to reverse osmosis unit, obtain ultra-pure water.
7. according to the ultra-pure water preparation method described in power 6, it is characterised in that: described MCDI unit include graphite paper, anode, cloudy from
Proton exchange, filter, negative electrode and cation exchange membrane, wherein, graphite paper has two-layer, anode, anion exchange membrane, filter, the moon
Pole and cation exchange membrane are arranged in order, and between two-layer graphite paper.
8. according to the ultra-pure water preparation method described in power 6, it is characterised in that: the electrode of described anode and negative electrode is porous carbon
Material.
9. according to the ultra-pure water preparation method described in power 6, it is characterised in that: described employing pretreatment unit is to carrying out pre-to water inlet
Process, specifically include:
Use pretreatment unit that water inlet carries out sand filtration, multi-medium filtering, softening, chlorination, regulation pH, active carbon filtration and degassing
Process.
10. according to the ultra-pure water preparation method described in power 6, it is characterised in that: described predetermined threshold value is 30us/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649547.3A CN106115990A (en) | 2016-08-08 | 2016-08-08 | Ultrapure water production system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649547.3A CN106115990A (en) | 2016-08-08 | 2016-08-08 | Ultrapure water production system and method |
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| Publication Number | Publication Date |
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| CN106115990A true CN106115990A (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649547.3A Pending CN106115990A (en) | 2016-08-08 | 2016-08-08 | Ultrapure water production system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402078A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Household water purifying device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145709A (en) * | 1983-09-01 | 1985-04-03 | Ionics | Membrane system for water purification |
| GB2249307A (en) * | 1990-10-30 | 1992-05-06 | Ionics Italba Spa | Process for purifying water by means of a combination of electrodialysis and reverse osmosis |
| CN202297292U (en) * | 2011-10-31 | 2012-07-04 | 安徽皖仪科技股份有限公司 | Ultrapure water machine |
| CN202829755U (en) * | 2012-07-26 | 2013-03-27 | 连云港多力水处理设备有限公司 | Ultra-pure water preparation system |
| CN204529569U (en) * | 2015-01-23 | 2015-08-05 | 昆山广盛源水务科技有限公司 | A kind of ultrapure water production system |
-
2016
- 2016-08-08 CN CN201610649547.3A patent/CN106115990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145709A (en) * | 1983-09-01 | 1985-04-03 | Ionics | Membrane system for water purification |
| GB2249307A (en) * | 1990-10-30 | 1992-05-06 | Ionics Italba Spa | Process for purifying water by means of a combination of electrodialysis and reverse osmosis |
| CN202297292U (en) * | 2011-10-31 | 2012-07-04 | 安徽皖仪科技股份有限公司 | Ultrapure water machine |
| CN202829755U (en) * | 2012-07-26 | 2013-03-27 | 连云港多力水处理设备有限公司 | Ultra-pure water preparation system |
| CN204529569U (en) * | 2015-01-23 | 2015-08-05 | 昆山广盛源水务科技有限公司 | A kind of ultrapure water production system |
Non-Patent Citations (1)
| Title |
|---|
| 黄黛诗: "膜/电容脱盐(MCDI)特性研究", 《环境科学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402078A (en) * | 2020-03-16 | 2021-09-17 | 佛山市云米电器科技有限公司 | Household water purifying device |
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Application publication date: 20161116 |
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