CN109019997A - A kind of two-pass reverse osmosis and EDI water treatment system - Google Patents
A kind of two-pass reverse osmosis and EDI water treatment system Download PDFInfo
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- CN109019997A CN109019997A CN201810750075.XA CN201810750075A CN109019997A CN 109019997 A CN109019997 A CN 109019997A CN 201810750075 A CN201810750075 A CN 201810750075A CN 109019997 A CN109019997 A CN 109019997A
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
- C02F1/44—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
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- 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
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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Abstract
A kind of two-pass reverse osmosis and EDI water treatment system, it include: raw water tank mouth, raw water box, booster pump, quartz filter, active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high-pressure pump, first-stage reverse osmosis unit, second level high-pressure pump, second level high pressure two-pass reverse osmosis unit, PH dosing tank, second level pure water tank, EDI intake pump accurate filter, EDI module, high-purity water tank, mixed bed delivery pump, polishing mixed bed, wherein, it include 3~4 concatenated RO films in first-stage reverse osmosis unit, it include that 2~3 concatenated RO films and RO film are all made of Dow RO film or Japanese Hydranautics RO film in two-pass reverse osmosis unit；System operating safety factor is improved by the reasonable arrangement to each device arrangement mode in RO film and I and II reverse osmosis water treatment system and stable effluent quality improves the rate of recovery simultaneously, and equipment investment is reduced with use cost, sexual valence is relatively high.
Description
Technical field
The present invention relates to pure water preparation technical field, specially a kind of two-pass reverse osmosis and EDI water treatment system.
Background technique
In purification of water field, reverse osmosis technology is most widely used in recent years, with the fastest developing speed one of purification techniques.
The application field of domestic reverse osmosis industry includes large-sized boiler make-up water, various industrial pure waters, drinking water, except first, half
The industries such as conducting electrons industry, medical treatment and pharmacy industry, horizontal beverage field, chemical industry, environmental protection are also applied very wide.
Wherein, the sterile no heat source purified water of pharmaceuticals industry, medical haemodialysis water, pure water, direct drinking, beverage are used
Water, the degree of purity of the fields such as cosmetic ingredients water water is higher to often require to use secondary reverse osmosis water processed.So-called second level is anti-
Infiltration is to carry out second of reverse osmosis purification using first-stage reverse osmosis water outlet as raw water, water quality is further purified, second level is made
Reverse osmosis water outlet conductivity≤2 μ S/CM.
During in the entire water processed of traditional two-pass reverse osmosis, traditional H is generally used+、OH-Type resin carries out ion
Displacement, discharges the waste water of discarding, waste can cause the pollution of pH value to environment, secondly, in traditional two-pass reverse osmosis technique
Since water line connectivity processed is more single, the water use efficiency of water manufacturing system is low, waste medicament, the rate of recovery are low and the rate of recovery often only
Have 30% or so, there are also relatively large distances for the expected efficiency apart from reverse osmosis water processed.In addition to this, the fortune in existing water treatment system
Row higher cost and effluent quality is unstable, it would be highly desirable to optimize water treatment system to improve above situation.
In view of the above technical problems, which proposes a kind of two-pass reverse osmosis and EDI water treatment system, comprising: raw water tank
Mouthful, raw water box, booster pump, quartz filter, active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high pressure
Pump, first-stage reverse osmosis unit, the water outlet end connecting with first-stage reverse osmosis unit is connected separately with fresh water regulating valve, fresh water stream
Meter, the concentrated water outlet end connecting with first-stage reverse osmosis unit are connected separately with concentrated water regulating valve, concentrated water flowmeter, second level high pressure
Pump, second level high pressure two-pass reverse osmosis unit, PH dosing tank, second level pure water tank, EDI intake pump accurate filter, EDI module are high
Pure water tank, mixed bed delivery pump, polishing mixed bed, wherein include 3~4 concatenated RO films, second level reverse osmosis in first-stage reverse osmosis unit
It include 2~3 concatenated RO films in saturating unit and RO film is all made of Dow RO film or Japanese Hydranautics RO film；By to RO
The reasonable arrangement of each device arrangement mode improves system operating safety factor and goes out in film and I and II reverse osmosis water treatment system
Water quality stabilizing improves the rate of recovery simultaneously, and equipment investment is reduced with use cost, sexual valence is relatively high.
Summary of the invention
A kind of two-pass reverse osmosis and EDI water treatment system, comprising: raw water tank mouth, raw water box, booster pump, quartz sand filtration
Device, active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high-pressure pump, first-stage reverse osmosis unit, with level-one reverse osmosis
The water outlet end of saturating unit connection is connected separately with fresh water regulating valve, plain water flow meter, connect with first-stage reverse osmosis unit
Concentrated water outlet end is connected separately with concentrated water regulating valve, concentrated water flowmeter, and the water outlet of plain water flow meter is connected with second level high-pressure pump,
It is weak that PH dosing tank is equipped between second level high-pressure pump and the pipeline of two-pass reverse osmosis unit connection to adjust primary reverse osmosis water
Alkaline (PH=7~9) avoid the reverse osmosis membrane surface scale in two-pass reverse osmosis unit from blocking reverse osmosis open-work to reduce water outlet
Rate, salt rejection rate and after the reverse osmosis purified treatment of first-stage reverse osmosis unit there is no the impurity such as Mg2+, Ca2+ without having to worry about
Above-mentioned ion generates precipitating in weakly alkaline environment, and the fresh water outlet end in two-pass reverse osmosis unit enters in second level pure water tank temporarily
When store, by EDI intake pump by second level pure water tank water be pumped into accurate filter in, it is filtered via accurate filter
Water is passed through EDI module, and the concentrated water filtered out is via the concentrated water import in EDI into, concentrated water outlet discharge EDI module, fresh water warp
By the fresh water import in EDI into, produce water out and go out and produce water out and connect with high-purity water tank, be temporarily stored in high-purity water tank
Water is pumped into polishing mixed bed by mixed bed conveying and further increases water quality, enters accurate mistake by the water that polishing mixed bed water outlet is discharged
Final filtering is carried out in filter, can directly be connect with the conveyance conduit of pure water user by the fresh water being discharged in accurate filter；
Wherein, include 3~4 concatenated RO films in first-stage reverse osmosis unit, include 2~3 in two-pass reverse osmosis unit
Concatenated RO film and RO film are all made of Dow RO film or Japanese Hydranautics RO film, the type and film of the RO film used in this way it
Between arrangement mode be greatly improved salt rejection rate and the rate of recovery；
As shown in Figure 1, being equipped with necessary switch control and regulating valve, parameter detecting dress in two-pass reverse osmosis water treatment system
It sets, metering device, wherein parameter detection device includes conductivity gauge, pressure protective device, and metering device includes flowmeter etc.；
EDI is the desalination process using electrically regenerative ion exchange resin, and RO pure water enters in EDI device, the ion in water
It is ion exchanged resin removing, the ion being removed is moved under the action of direct current by respective amberplex
In concentrated water room, hydrone is also separated into H simultaneously by direct current+And OH-, continuously ion exchange resin is regenerated, is kept away
Exempt from the method pollution environment in traditional water manufacturing system using resin ion exchange, while avoiding often shutting down regenerating resin and causing to sow
The low situation of dynamic rate.
Above-mentioned reverse osmosis and EDI water manufacturing system technologically advanced and system operational safety, stable effluent quality, equipment are thrown
Enter relatively high with use cost reduction, sexual valence.
Preferably, the two-pass reverse osmosis and EDI water treatment system, from raw water fill mouth to raw water box be equipped with two originals
Water conveyance conduit, respectively main delivery pipe, emergency pipeline, wherein emergency pipeline is equipped with hand by-pass valve, main delivery pipe
It is equipped with total inlet water solenoid valve.Total inlet water solenoid valve can automatically control flow velocity, the flow of raw water according to the setting of circuit system
And switch time and precision, sensitivity are higher, but when the main delivery pipe blocking that be provided with total inlet water solenoid valve is broken down
After when being unable to operate normally, in order to guarantee the continuous operation of pure water making system, can manually opened by-passing valve make raw water temporarily from
Emergency pipeline flow, to repair main delivery pipe.
Preferably, the two-pass reverse osmosis and EDI water treatment system, total inlet water solenoid valve in main delivery pipe are being intake
Side, water outlet side are respectively equipped with inlet valve, outlet valve.It, can when total inlet water solenoid valve on main delivery pipe breaks down
Inlet valve is turned off manually, outlet valve is replaced or repaired in total inlet water solenoid valve between the two.
Preferably, the concentrated water outlet end in the two-pass reverse osmosis and EDI water treatment system, with first-stage reverse osmosis unit connects
The concentrated water discharge pipeline connect is equipped with concentrate recirculation branch pipe, and concentrate recirculation valve is equipped on concentrate recirculation branch pipe；Correspondingly, with
The fresh water discharge tube of water outlet end connection in first-stage reverse osmosis unit is equipped with fresh water reflux branch pipe, and fresh water reflux branch
Fresh water return valve is installed, and light, concentrate recirculation branch pipe is connect with RO cleaning case and RO cleaning case and light, concentrate recirculation on pipe
Cleaning case outlet valve is installed, RO cleaning case is connect with level-one high-pressure pump water inlet end by pipeline and between the two between branch pipe
It is equipped on official road and washes film valve, so far, the wash cycles system for cleaning RO film is formd in two-pass reverse osmosis water treatment system
System.
The application method of above-mentioned RO film circulation cleaning system, steps are as follows:
01: after configured cleaning solution is injected in RO cleaning case；
02: successively close the high-pressure water inlet valve of level-one high-pressure pump water inlet end, fresh water regulating valve, successively open RO wash film valve,
Fresh water return valve closes concentrated water regulating valve；
03: after powering on, opening high-pressure pump, while adjusting concentrate recirculation valve guarantees that the pressure for cleaning film in 0.4MPa
Left and right is (by observing the high voltage protective pressure that first-stage reverse osmosis unit water inlet front end is arranged in and setting on concentrated water discharge pipeline
Positioned at do, the concentrated water pressure of concentrated water regulating valve front end), make to clean the water of RO film in level-one high-pressure pump, first-stage reverse osmosis unit, dense
Water reflux branch pipe, is circulated in RO cleaning case and is cleaned to the RO film in first-stage reverse osmosis unit fresh water reflux branch pipe；
Close to during the wash cycles of 2 hours, without being continuously added into cleaning agent, cleaning solution can be recycled repeatedly sharp
With reducing the usage amount of cleaning agent while saving scavenging period.
04: cleaning finishes, and successively closes level-one high-pressure pump, cleaning case outlet valve, RO and washes film valve, concentrate recirculation valve, fresh water
Return valve opens concentrated water regulating valve, fresh water regulating valve again；
05: 1~2 hour of pure water rinsing should be carried out after washing film.
Preferably, the two-pass reverse osmosis and EDI water treatment system, the concentrated water water outlet in two-pass reverse osmosis unit pass through
Concentrated water recycles pipeline and is back in raw water box, to the concentrated water recycling and reusing in two-pass reverse osmosis unit.Due to passing through one
Reverse osmosis most impurity, foreign matter, the peculiar smell having had been removed in raw water of grade reverse osmosis units, so two-pass reverse osmosis system
Concentrated water impurity in system is less to be can be recycled, and improves the rate of recovery while saving water source, by returning for tradition 35%
Yield is promoted to 75%.
Detailed description of the invention:
Specific embodiment is further described with reference to the accompanying drawing, in which:
Fig. 1 is the connection schematic diagram of two-pass reverse osmosis and EDI water treatment system of the present invention；
Fig. 2 is that the connection in raw water box double water inlet pipes road in two-pass reverse osmosis and EDI water treatment system of the present invention is shown
It is intended to；
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Case 1 is embodied:
A kind of two-pass reverse osmosis and EDI water treatment system, comprising: raw water tank mouth, raw water box, booster pump, quartz sand filtration
Device, active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high-pressure pump, first-stage reverse osmosis unit, with level-one reverse osmosis
The water outlet end of saturating unit connection is connected separately with fresh water regulating valve, plain water flow meter, connect with first-stage reverse osmosis unit
Concentrated water outlet end is connected separately with concentrated water regulating valve, concentrated water flowmeter, and the water outlet of plain water flow meter is connected with second level high-pressure pump,
It is weak that PH dosing tank is equipped between second level high-pressure pump and the pipeline of two-pass reverse osmosis unit connection to adjust primary reverse osmosis water
Alkaline (PH=7~9) avoid the reverse osmosis membrane surface scale in two-pass reverse osmosis unit from blocking reverse osmosis open-work to reduce water outlet
Rate, salt rejection rate and after the reverse osmosis purified treatment of first-stage reverse osmosis unit there is no the impurity such as Mg2+, Ca2+ without having to worry about
Above-mentioned ion generates precipitating in weakly alkaline environment, and the fresh water outlet end in two-pass reverse osmosis unit enters in second level pure water tank temporarily
When store, by EDI intake pump by second level pure water tank water be pumped into accurate filter in, it is filtered via accurate filter
Water is passed through EDI module, and the concentrated water filtered out is via the concentrated water import in EDI into, concentrated water outlet discharge EDI module, fresh water warp
By the fresh water import in EDI into, produce water out and go out and produce water out and connect with high-purity water tank, be temporarily stored in high-purity water tank
Water is pumped into polishing mixed bed by mixed bed conveying and further increases water quality, enters accurate mistake by the water that polishing mixed bed water outlet is discharged
Final filtering is carried out in filter, can directly be connect with the conveyance conduit of pure water user by the fresh water being discharged in accurate filter；
Wherein, include 3 concatenated RO films in first-stage reverse osmosis unit, include 2 concatenated in two-pass reverse osmosis unit
RO film and RO film are all made of Dow RO film or Japanese Hydranautics RO film, the row between the type and film of the RO film used in this way
Column mode is greatly improved salt rejection rate and the rate of recovery；
As shown in Figure 1, being equipped with necessary switch control and regulating valve, parameter detecting dress in two-pass reverse osmosis water treatment system
It sets, metering device, wherein parameter detection device includes conductivity gauge, pressure protective device, and metering device includes flowmeter etc..
Further, from raw water fill mouth to raw water box be equipped with two raw water pipelines, respectively main delivery pipe,
Emergency pipeline, wherein emergency pipeline is equipped with hand by-pass valve, main delivery pipe is equipped with total inlet water solenoid valve；Main delivery pipe
In total inlet water solenoid valve water inlet side, water outlet side be respectively equipped with inlet valve, outlet valve；In first-stage reverse osmosis unit
The concentrated water discharge pipeline of concentrated water outlet end connection is equipped with concentrate recirculation branch pipe, and is equipped with concentrate recirculation on concentrate recirculation branch pipe
Valve；Correspondingly, the fresh water discharge tube connecting with the water outlet end in first-stage reverse osmosis unit is equipped with fresh water reflux branch pipe,
And fresh water return valve is installed on fresh water reflux branch pipe, and light, concentrate recirculation branch pipe is connect with RO cleaning case and RO cleaning case
Cleaning case outlet valve is installed between light, concentrate recirculation branch pipe, RO cleaning case is connected by pipeline and level-one high-pressure pump water inlet end
It connects and is equipped on official road between the two and wash film valve, so far, form in two-pass reverse osmosis water treatment system for cleaning RO
The circulation cleaning system of film.
The application method of above-mentioned RO film circulation cleaning system, steps are as follows:
01: after configured cleaning solution is injected in RO cleaning case；
02: successively close the high-pressure water inlet valve of level-one high-pressure pump water inlet end, fresh water regulating valve, successively open RO wash film valve,
Fresh water return valve closes concentrated water regulating valve；
03: after powering on, opening high-pressure pump, while adjusting concentrate recirculation valve guarantees that the pressure for cleaning film in 0.4MPa
Left and right is (by observing the high voltage protective pressure that first-stage reverse osmosis unit water inlet front end is arranged in and setting on concentrated water discharge pipeline
Positioned at do, the concentrated water pressure of concentrated water regulating valve front end), make to clean the water of RO film in level-one high-pressure pump, first-stage reverse osmosis unit, dense
Water reflux branch pipe, is circulated in RO cleaning case and is cleaned to the RO film in first-stage reverse osmosis unit fresh water reflux branch pipe；
Close to during the wash cycles of 2 hours, without being continuously added into cleaning agent, cleaning solution can be recycled repeatedly sharp
With reducing the usage amount of cleaning agent while saving scavenging period.
04: cleaning finishes, and successively closes level-one high-pressure pump, cleaning case outlet valve, RO and washes film valve, concentrate recirculation valve, fresh water
Return valve opens concentrated water regulating valve, fresh water regulating valve again；
05: 1~2 hour of pure water rinsing should be carried out after washing film.
In this specific implementation by RO film and I and II reverse osmosis water treatment system each device arrangement mode it is reasonable
Raising system operating safety factor and stable effluent quality is arranged to improve the rate of recovery simultaneously, equipment investment and use cost drop
It is low, sexual valence is relatively high.Secondly, saving occupied area by the setting of RO film wash cycles completely, structural compactness is improved simultaneously
It can make to wash medicament circulation Reusability, save pharmaceutical use.
Case 2 is embodied:
A kind of two-pass reverse osmosis and EDI water treatment system, comprising: raw water tank mouth, raw water box, booster pump, quartz sand filtration
Device, active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high-pressure pump, first-stage reverse osmosis unit, with level-one reverse osmosis
The water outlet end of saturating unit connection is connected separately with fresh water regulating valve, plain water flow meter, connect with first-stage reverse osmosis unit
Concentrated water outlet end is connected separately with concentrated water regulating valve, concentrated water flowmeter, and the water outlet of plain water flow meter is connected with second level high-pressure pump,
It is weak that PH dosing tank is equipped between second level high-pressure pump and the pipeline of two-pass reverse osmosis unit connection to adjust primary reverse osmosis water
Alkaline (PH=7~9) avoid the reverse osmosis membrane surface scale in two-pass reverse osmosis unit from blocking reverse osmosis open-work to reduce water outlet
Rate, salt rejection rate and after the reverse osmosis purified treatment of first-stage reverse osmosis unit there is no the impurity such as Mg2+, Ca2+ without having to worry about
Above-mentioned ion generates precipitating in weakly alkaline environment, and the fresh water outlet end in two-pass reverse osmosis unit enters in second level pure water tank temporarily
When store, by EDI intake pump by second level pure water tank water be pumped into accurate filter in, it is filtered via accurate filter
Water is passed through EDI module, and the concentrated water filtered out is via the concentrated water import in EDI into, concentrated water outlet discharge EDI module, fresh water warp
By the fresh water import in EDI into, produce water out and go out and produce water out and connect with high-purity water tank, be temporarily stored in high-purity water tank
Water is pumped into polishing mixed bed by mixed bed conveying and further increases water quality, enters accurate mistake by the water that polishing mixed bed water outlet is discharged
Final filtering is carried out in filter, can directly be connect with the conveyance conduit of pure water user by the fresh water being discharged in accurate filter；
Wherein, include 4 concatenated RO films in first-stage reverse osmosis unit, include 3 concatenated in two-pass reverse osmosis unit
RO film and RO film are all made of Dow RO film or Japanese Hydranautics RO film, the row between the type and film of the RO film used in this way
Column mode is greatly improved salt rejection rate and the rate of recovery；
As shown in Figure 1, being equipped with necessary switch control and regulating valve, parameter detecting dress in two-pass reverse osmosis water treatment system
It sets, metering device, wherein parameter detection device includes conductivity gauge, pressure protective device, and metering device includes flowmeter etc..
Further, from raw water fill mouth to raw water box be equipped with two raw water pipelines, respectively main delivery pipe,
Emergency pipeline, wherein emergency pipeline is equipped with hand by-pass valve, main delivery pipe is equipped with total inlet water solenoid valve；Main delivery pipe
In total inlet water solenoid valve water inlet side, water outlet side be respectively equipped with inlet valve, outlet valve；In first-stage reverse osmosis unit
The concentrated water discharge pipeline of concentrated water outlet end connection is equipped with concentrate recirculation branch pipe, and is equipped with concentrate recirculation on concentrate recirculation branch pipe
Valve；Correspondingly, the fresh water discharge tube connecting with the water outlet end in first-stage reverse osmosis unit is equipped with fresh water reflux branch pipe,
And fresh water return valve is installed on fresh water reflux branch pipe, and light, concentrate recirculation branch pipe is connect with RO cleaning case and RO cleaning case
Cleaning case outlet valve is installed between light, concentrate recirculation branch pipe, RO cleaning case is connected by pipeline and level-one high-pressure pump water inlet end
It connects and is equipped on official road between the two and wash film valve, so far, form in two-pass reverse osmosis water treatment system for cleaning RO
The circulation cleaning system of film.
The application method of above-mentioned RO film circulation cleaning system, steps are as follows:
01: after configured cleaning solution is injected in RO cleaning case；
02: successively close the high-pressure water inlet valve of level-one high-pressure pump water inlet end, fresh water regulating valve, successively open RO wash film valve,
Fresh water return valve closes concentrated water regulating valve；
03: after powering on, opening high-pressure pump, while adjusting concentrate recirculation valve guarantees that the pressure for cleaning film in 0.4MPa
Left and right is (by observing the high voltage protective pressure that first-stage reverse osmosis unit water inlet front end is arranged in and setting on concentrated water discharge pipeline
Positioned at do, the concentrated water pressure of concentrated water regulating valve front end), make to clean the water of RO film in level-one high-pressure pump, first-stage reverse osmosis unit, dense
Water reflux branch pipe, is circulated in RO cleaning case and is cleaned to the RO film in first-stage reverse osmosis unit fresh water reflux branch pipe；
Close to during the wash cycles of 2 hours, without being continuously added into cleaning agent, cleaning solution can be recycled repeatedly sharp
With reducing the usage amount of cleaning agent while saving scavenging period.
04: cleaning finishes, and successively closes level-one high-pressure pump, cleaning case outlet valve, RO and washes film valve, concentrate recirculation valve, fresh water
Return valve opens concentrated water regulating valve, fresh water regulating valve again；
05: 1~2 hour of pure water rinsing should be carried out after washing film.
Further, the concentrated water water outlet in two-pass reverse osmosis unit recycles pipeline by concentrated water and is back to raw water box
In, to the concentrated water recycling and reusing in two-pass reverse osmosis unit.
In this specific implementation by RO film and I and II reverse osmosis water treatment system each device arrangement mode it is reasonable
Raising system operating safety factor and stable effluent quality is arranged to improve the rate of recovery simultaneously, equipment investment and use cost drop
It is low, sexual valence is relatively high.Secondly, saving occupied area by the setting of RO film wash cycles completely, structural compactness is improved simultaneously
It can make to wash medicament circulation Reusability, save pharmaceutical use.Furthermore by the way that the concentrated water in two-pass reverse osmosis is passed through again
Reverse osmosis utilization again is carried out in raw water box together with raw water, further increases the rate of recovery, the rate of recovery is increased to from 30%
75% or so.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of two-pass reverse osmosis and EDI water treatment system, comprising: raw water tank mouth, raw water box, booster pump, quartz filter,
Active carbon filter, antisludging agent dosing tank, cartridge filter, level-one high-pressure pump, first-stage reverse osmosis unit, with first-stage reverse osmosis list
The water outlet end of member connection is connected separately with fresh water regulating valve, plain water flow meter, the concentrated water connecting with first-stage reverse osmosis unit
Outlet end is connected separately with concentrated water regulating valve, concentrated water flowmeter, and the water outlet of plain water flow meter is connected with second level high-pressure pump, second level
PH dosing tank, the fresh water outlet end in two-pass reverse osmosis unit are equipped between high-pressure pump and the pipeline of two-pass reverse osmosis unit connection
Into temporarily being stored in second level pure water tank, the water in second level pure water tank is pumped into accurate filter by EDI intake pump, via
The filtered water of accurate filter is passed through EDI module, and the concentrated water filtered out is exported via the concentrated water import in EDI into, concentrated water
Be discharged EDI module, fresh water via the fresh water import in EDI into, produce water out and go out and produce water out and connect with high-purity water tank, temporarily
The water being stored in high-purity water tank is pumped into polishing mixed bed by mixed bed conveying and further increases water quality, by polishing mixed bed water outlet
The water of discharge, which enters, carries out final filtering in accurate filter, can directly be used with pure water by the fresh water being discharged in accurate filter
The conveyance conduit at family connects；
Wherein, include 3~4 concatenated RO films in first-stage reverse osmosis unit, include 2~3 series connection in two-pass reverse osmosis unit
RO film and RO film be all made of Dow RO film or Japanese Hydranautics RO film；
Necessary switch control and regulating valve, parameter detection device, metering device are equipped in two-pass reverse osmosis water treatment system,
Middle parameter detection device includes conductivity gauge, pressure protective device, and metering device includes flowmeter etc..
2. two-pass reverse osmosis as described in claim 1 and EDI water treatment system, it is characterised in that: fill mouth to raw water box from raw water
Between be equipped with two raw water pipelines, respectively main delivery pipe, emergency pipeline, wherein emergency pipeline be equipped with manual bypass
Valve, main delivery pipe are equipped with total inlet water solenoid valve.
3. two-pass reverse osmosis as claimed in claim 2 and EDI water treatment system, it is characterised in that: in main delivery pipe always into
Water solenoid valve is respectively equipped with inlet valve, outlet valve in water inlet side, water outlet side.
4. two-pass reverse osmosis as described in claim 1 and EDI water treatment system, it is characterised in that: in first-stage reverse osmosis unit
Concentrated water outlet end connection concentrated water discharge pipeline be equipped with concentrate recirculation branch pipe, and be equipped on concentrate recirculation branch pipe concentrated water return
Flow valve；Correspondingly, the fresh water discharge tube connecting with the water outlet end in first-stage reverse osmosis unit is equipped with fresh water reflux branch
Pipe, and fresh water return valve is installed, and light, concentrate recirculation branch pipe is connect with RO cleaning case and RO is cleaned on fresh water reflux branch pipe
Cleaning case outlet valve is installed, RO cleaning case passes through pipeline and level-one high-pressure pump water inlet end between case and light, concentrate recirculation branch pipe
It is equipped in connection and official road between the two and washes film valve, so far, formd in two-pass reverse osmosis water treatment system for cleaning
The circulation cleaning system of RO film.
5. two-pass reverse osmosis and EDI water treatment system as described in Claims 1 to 4 is any, it is characterised in that: two-pass reverse osmosis list
Concentrated water water outlet in member recycles pipeline by concentrated water and is back in raw water box, returns to the concentrated water in two-pass reverse osmosis unit
It receives and recycles.
6. the application method of RO film circulation cleaning system in two-pass reverse osmosis as claimed in claim 4 and EDI water treatment system, step
It is rapid as follows:
01: after configured cleaning solution is injected in RO cleaning case；
02: successively closing high-pressure water inlet valve, the fresh water regulating valve of level-one high-pressure pump water inlet end, successively open RO and wash film valve, fresh water
Return valve closes concentrated water regulating valve；
03: after powering on, opening high-pressure pump, while adjusting concentrate recirculation valve guarantees that the pressure for cleaning film on the left side 0.4MPa
The right side makes the water for cleaning RO film in level-one high-pressure pump, first-stage reverse osmosis unit, concentrate recirculation branch pipe, fresh water reflux branch pipe, RO cleaning
It is circulated in case and the RO film in first-stage reverse osmosis unit is cleaned；
04: cleaning finishes, and successively closes level-one high-pressure pump, cleaning case outlet valve, RO and washes film valve, concentrate recirculation valve, fresh water reflux
Valve opens concentrated water regulating valve, fresh water regulating valve again；
05: 1~2 hour of pure water rinsing should be carried out after washing film.
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| CN113003821A (en) * | 2021-03-31 | 2021-06-22 | 重庆品正食品有限公司 | Pure water filtering system |
| CN113577898A (en) * | 2021-07-28 | 2021-11-02 | 南京云畅环保科技有限公司 | Vehicle urea liquid ultrafiltration process and device thereof |
| CN114275929A (en) * | 2021-12-14 | 2022-04-05 | 四川德迈环保工程有限公司 | High-reuse-rate membrane treatment system and method for wastewater |
| CN115403199A (en) * | 2022-08-29 | 2022-11-29 | 湖南龙新净水科技有限公司 | Inspection water jointly uses RO + EDI device |
| CN115594337A (en) * | 2022-09-30 | 2023-01-13 | 乌海宝化万辰煤化工有限责任公司（Cn） | Sewage recycling treatment system |
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Application publication date: 20181218 |