CN112408690A - Secondary reverse osmosis water treatment equipment in pure water treatment process - Google Patents
Secondary reverse osmosis water treatment equipment in pure water treatment process Download PDFInfo
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- CN112408690A CN112408690A CN202011215192.XA CN202011215192A CN112408690A CN 112408690 A CN112408690 A CN 112408690A CN 202011215192 A CN202011215192 A CN 202011215192A CN 112408690 A CN112408690 A CN 112408690A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 319
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 185
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 47
- 238000003860 storage Methods 0.000 claims abstract description 31
- 238000011001 backwashing Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 34
- 238000011010 flushing procedure Methods 0.000 claims description 31
- 238000002242 deionisation method Methods 0.000 claims description 29
- 238000004659 sterilization and disinfection Methods 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 238000005342 ion exchange Methods 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000002455 scale inhibitor Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 10
- 238000005406 washing Methods 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to the technical field of secondary reverse osmosis water treatment, in particular to secondary reverse osmosis water treatment equipment in a pure water treatment process, which comprises a raw water tank, a primary reverse osmosis treatment system, a secondary reverse osmosis treatment system and a pure water storage tank, wherein the raw water tank is communicated with the primary reverse osmosis treatment system through a first water inlet pipe, and a raw water pump is arranged on the first water inlet pipe; the downstream of the first-stage reverse osmosis treatment system is communicated with the second-stage reverse osmosis treatment system through a second water inlet pipe, and a high-pressure pump, a first backwashing pipe and a first electromagnetic valve are arranged on the second water inlet pipe; the downstream of the secondary reverse osmosis treatment system is communicated with a pure water storage tank through a third water inlet pipe, and a pure water pump, a second backwashing pipe and a second electromagnetic valve are arranged on the third water inlet pipe; the invention can effectively improve the water permeability of the reverse osmosis membrane, improve the filtering effect of the reverse osmosis membrane and improve the quality of pure water; the emission head can be adjusted to execute different amplitudes, and the cleaning effect of the reverse osmosis membrane can be adjusted.
Description
Technical Field
The invention relates to the technical field of secondary reverse osmosis water treatment, in particular to secondary reverse osmosis water treatment equipment in a pure water treatment process.
Background
The washing and nursing series products are essential articles for daily nursing of families, and comprise shampoo, shower gel, liquid soap, handmade soap and the like. The washing and protecting articles mainly comprise: head care products, bathroom care products, cleaning care products. According to the population, the method can be divided into the following steps: baby washing products and pregnant woman washing products. Recently, pet washing products are available on the market.
In the process of processing raw materials by washing and protecting series daily necessities, industrial pure water with lower conductivity is needed, while ordinary industrial water is simply treated by a water works, the water quality of the industrial pure water far cannot meet the use requirements of liquid washing series products, and therefore the industrial pure water needs to be treated. The invention with the patent number of 201811039742.X discloses a pure water treatment device for washing and protecting series products and a preparation process flow, wherein the treatment device comprises a primary reverse osmosis water pretreatment device, a secondary reverse osmosis water treatment device and an ultraviolet sterilization treatment device, and the preparation process flow comprises three steps of primary reverse osmosis water pretreatment, secondary reverse osmosis water treatment and ultraviolet sterilization; the first-stage reverse osmosis water is pretreated, and pre-softening three-stage filtration treatment is adopted to obtain industrial pure water with the conductivity of less than 10 us/cm; the second-stage reverse osmosis water treatment adopts a membrane treatment technology, and is carried out through RO reverse osmosis equipment and deionization mixed bed treatment to obtain industrial pure water with the conductivity of less than 3 us/cm; and performing ultraviolet sterilization to obtain the industrial pure water finally meeting the requirements of washing and protecting series products. The invention has the advantages of automatic control, online real-time performance, simple process flow, good water treatment effect, high precision, low pure water conductivity and the like; however, the invention still has some disadvantages: the holes of the reverse osmosis membrane are fine, and dirt is difficult to completely remove by general backwashing, so that the water permeability of the reverse osmosis membrane is low, and the quality of a finally obtained pure water product is not ideal; when the temperature of raw water in the raw water tank is too high, the heat of the raw water cannot be recycled, so that resource waste is caused, and when the temperature of the raw water is too low, the flow speed of the raw water is slowed down, so that the raw water is not beneficial to infiltration and filtration.
Disclosure of Invention
The invention provides a secondary reverse osmosis water treatment device in a pure water treatment process aiming at the problems in the background technology.
The invention is realized by the following technical scheme:
a two-stage reverse osmosis water treatment device in a pure water treatment process comprises a raw water tank, a first-stage reverse osmosis treatment system, a second-stage reverse osmosis treatment system and a pure water storage tank, wherein the raw water tank is communicated with the first-stage reverse osmosis treatment system through a first water inlet pipe, and a raw water pump is arranged on the first water inlet pipe; the downstream of the primary reverse osmosis treatment system is communicated with the secondary reverse osmosis treatment system through a second water inlet pipe, and a high-pressure pump, a first reverse flushing pipe and a first electromagnetic valve are arranged on the second water inlet pipe; the downstream of the two-stage reverse osmosis treatment system is communicated with a pure water storage tank through a third water inlet pipe, a pure water pump, a second backwashing pipe and a second electromagnetic valve are arranged on the third water inlet pipe, and backwashing electromagnetic valves are arranged on the first backwashing pipe and the second backwashing pipe;
the primary reverse osmosis treatment system and the secondary reverse osmosis treatment system are controlled by an extension control box, a water flow meter, a conductivity meter, a pressure meter before a membrane, a pressure meter after the membrane, a working indicator lamp and a manual switch are arranged on the front surface of the extension control box, the water flow meter detects the flow of water by using a liquid level sensor, the conductivity meter detects the conductivity of the water in real time by using the water quality, and the working indicator lamp comprises a standby lamp, a normal operation lamp, an abnormal alarm lamp and a maintenance state lamp;
the primary reverse osmosis treatment system comprises a multi-media filter, an activated carbon filter, a water softener and a precision filter which are sequentially communicated, wherein the multi-media filter is used for removing particulate matters above um, including silt, rust, colloidal substances and suspended matters contained in raw water; the activated carbon filter is used for adsorbing electrolyte ions and carrying out ion exchange adsorption; the scale inhibitor is quantitatively put into the water softener and used for preventing carbonate and SiO2And the crystal precipitation of sulfate; the precision filter is used for removing residual suspended matters, non-bent straight particles and colloid, and a filter element in the precision filter is a 5um melt-blown filter element and is used for removing impurities larger than 5um leaked by a superior filtering unit; the outer walls of the multi-media filter, the activated carbon filter, the water softener and the precision filter are communicated with first flushing branch pipes, all the first flushing branch pipes are installed with first water dividing connectors, and the first water dividing connectorsThe joint is arranged with the first back flushing pipe;
the secondary reverse osmosis treatment system comprises a secondary reverse osmosis tank, a deionization mixed bed and a secondary reverse osmosis pure water tank which are sequentially communicated, reverse osmosis membranes are adopted for filtering in the secondary reverse osmosis tank and the deionization mixed bed, and industrial pure water with good water quality and conductivity less than 3us/cm obtained after filtering enters the secondary reverse osmosis pure water tank (3); the outer walls of the secondary reverse osmosis tank and the deionization mixed bed are communicated with second flushing branch pipes, all the second flushing branch pipes are installed with second water distribution connectors, and the second water distribution connectors are installed with second backwashing pipes
The top of the secondary reverse osmosis tank and the top of the deionization mixed bed are both provided with ultrasonic vibration components, each ultrasonic vibration component comprises an ultrasonic transducer, an amplitude transformer and a transmitting head, the bottom end of each ultrasonic transducer is provided with the amplitude transformer, the bottom end of each amplitude transformer penetrates through the inside of the secondary reverse osmosis tank and the inside of the deionization mixed bed respectively, and the transmitting heads are arranged at the bottom ends of the amplitude transformers.
As a further improvement of the scheme, the ultrasonic transducer converts input electric energy into mechanical energy, the ultrasonic transducer makes reciprocating telescopic motion in the longitudinal direction, the amplitude is 3-5 mu m, the amplitude transformer is used for amplifying the amplitude and isolating water from the ultrasonic transducer, and the transmitting head is directly contacted with the water and can transmit the ultrasonic energy into the water.
As a further improvement of the scheme, a screw hole is formed in the center of the top surface of the transmitting head, a round sleeve is fixed at the upper end of the screw hole, a fastening bolt is fixed on the outer wall of the round sleeve, and an external thread matched with the screw hole is formed in the outer wall of the bottom end of the amplitude transformer.
As a further improvement of the scheme, the emission head is cylindrical or is formed by connecting a plurality of spherical bodies in series up and down.
As a further improvement of the scheme, the side wall of the original water tank sequentially comprises an outer tank shell, a heat exchange cavity and an inner tank shell from outside to inside, and the outer wall of the outer tank shell is communicated with a liquid inlet pipe and a liquid outlet pipe.
As a further improvement of the scheme, the liquid inlet pipe is arranged below the liquid outlet pipe and is connected with an external heat exchange liquid conveying pump.
As a further improvement of the scheme, a hollow tube is arranged inside the pure water storage tank, and an ultraviolet disinfection lamp is arranged inside the hollow tube.
As a further improvement of the scheme, the top end and the bottom end of the hollow tube are respectively fixed with the top end and the bottom end of the inner wall of the pure water storage tank, a sealing plate is fixed at the bottom end of the hollow tube, a lamp holder is installed at the top end of the hollow tube, and the ultraviolet disinfection lamp is installed at the bottom end of the lamp holder.
As a further improvement of the scheme, the front surface of the extension control box is also provided with a touch display screen, and the touch display screen is used for displaying various data and working information of the primary reverse osmosis treatment system and the secondary reverse osmosis treatment system.
As a further improvement of the above scheme, the processing procedure of the device comprises the following steps:
a. raw water in the raw water tank is pressurized by a raw water pump and then enters the primary reverse osmosis treatment system;
b. the multi-media filter in the first-stage reverse osmosis treatment system firstly removes particulate matters more than 20um, then the activated carbon filter adsorbs electrolyte ions and performs ion exchange adsorption, and then the water softener is used for preventing carbonate and SiO2And the crystal of the sulfate is separated out, and then the precision filter is used for removing the impurities which are larger than 5um and are leaked out by the upper filtering unit;
c. the high-pressure pump pressurizes the raw water filtered by the primary reverse osmosis treatment system through the second water inlet pipe and then the raw water enters the secondary reverse osmosis treatment system;
d. obtaining industrial pure water with good water quality and conductivity less than 3us/cm under the filtering action of a secondary reverse osmosis tank in the secondary reverse osmosis treatment system and a reverse osmosis membrane in the deionization mixed bed, and feeding the industrial pure water into a secondary reverse osmosis pure water tank;
e. and finally, pumping the industrial pure water into the pure water storage tank by a pure water pump for sterilization and storage.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the ultrasonic vibration components are respectively arranged at the tops of the secondary reverse osmosis tank and the deionization mixed bed, each ultrasonic vibration component comprises an ultrasonic transducer, an amplitude transformer and an emitting head, the ultrasonic transducers can convert electric energy into ultrasonic energy, the amplitude transformer can amplify the amplitude and transmit the amplitude to the emitting head, and finally the emitting head can transmit the ultrasonic energy to water, reverse osmosis membranes and reverse osmosis membrane surface dirt and enable the water, reverse osmosis membranes and reverse osmosis membrane surface dirt to generate resonance, and due to different oscillation frequencies of the water, reverse osmosis membranes and reverse osmosis membrane surface dirt, water molecules are violently collided to generate strong impact force to impact the reverse osmosis membrane surface dirt to enable the reverse osmosis membrane surface dirt to be crisp, stripped, fallen and crushed, so that the reverse osmosis membrane surface is cleaned, and is combined with back flushing, the water permeability of the reverse osmosis membranes can be effectively, the quality of the pure water is improved; furthermore, adopt the screw thread installation between horn and the transmitting head to can change the combined length of horn and transmitting head, when receiving ultrasonic energy transducer and sending ultrasonic energy, because the combined length is different, and then adjustable transmitting head carries out different amplitudes, can adjust reverse osmosis membrane's cleaning performance.
2. According to the invention, the side wall of the raw water tank sequentially comprises a tank outer shell, a heat exchange cavity and an inner tank shell from outside to inside, the outer wall of the tank outer shell is communicated with a liquid inlet pipe and a liquid outlet pipe, heat exchange liquid can be conveyed into the heat exchange cavity from the liquid inlet pipe through an external heat exchange liquid conveying pump, and when the temperature of raw water is too high, cooling liquid can be used, so that the heat in the raw water can be recycled, and the energy-saving and environment-friendly effects are achieved; when the raw water temperature is too low, hot oil can be used, and the hot oil can improve the temperature of the raw water, so that the problem of too low flowing speed of the raw water can be avoided.
3. According to the invention, the hollow tube is arranged in the pure water storage box, the ultraviolet disinfection lamp is arranged in the hollow tube, and the ultraviolet disinfection lamp can uniformly emit ultraviolet rays to the periphery after being electrified, so that microorganisms and bacteria in the pure water can be killed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of a primary reverse osmosis treatment system and its upstream connections according to the present invention;
FIG. 3 is a schematic diagram of a two-stage reverse osmosis treatment system and its downstream connections in accordance with the present invention;
FIG. 4 is a schematic view of a partial cross-sectional view of the raw water tank of the present invention;
FIG. 5 is a schematic view of a partial cross-sectional view of a pure water storage tank according to the present invention;
FIG. 6 is a schematic view showing the internal structure of a pure water storage tank according to the present invention;
FIG. 7 is a schematic perspective view of a single extension control box according to the present invention;
fig. 8 is a schematic perspective view of an ultrasonic vibration module according to embodiment 1 of the present invention;
FIG. 9 is an internal view of an ultrasonic vibration module in embodiment 1 of the present invention;
fig. 10 is a schematic perspective view of an ultrasonic vibration module according to embodiment 2 of the present invention.
Wherein, 1-raw water tank, 101-tank outer shell, 102-heat exchange cavity, 103-tank inner shell, 104-liquid inlet pipe, 105-liquid outlet pipe, 2-primary reverse osmosis treatment system, 201-multi-medium filter, 202-activated carbon filter, 203-water softener, 204-precision filter, 3-secondary reverse osmosis treatment system, 301-secondary reverse osmosis tank, 302-deionization mixing bed, 303-secondary reverse osmosis pure water tank, 4-pure water storage tank, 401-hollow pipe, 402-ultraviolet disinfection lamp, 403-sealing plate, 404-lamp holder, 5-ultrasonic vibration component, 501-ultrasonic transducer, 502-amplitude transformer, 503-emission head, 504-screw hole, 505-round sleeve, 506-fastening bolt, 6-extension control box, 601-water flow meter, 602-conductivity meter, 603-pressure meter before membrane, 604-pressure meter after membrane, 605-working indicator lamp, 606-touch display screen, 7-first water inlet pipe, 8-raw water pump, 9-second water inlet pipe, 10-high pressure pump, 11-first back flushing pipe, 12-first electromagnetic valve, 13-third water inlet pipe, 14-first flushing branch pipe, 15-pure water pump, 16-second back flushing pipe, 17-second electromagnetic valve, 18-back flushing electromagnetic valve, 19-second flushing branch pipe, 20-first water distribution joint and 21-second water distribution joint.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The present invention will be further described with reference to the accompanying drawings 1 to 10.
Example 1
A two-stage reverse osmosis water treatment device in a pure water treatment process is shown in figures 1-3 and comprises a raw water tank 1, a primary reverse osmosis treatment system 2, a two-stage reverse osmosis treatment system 3 and a pure water storage tank 4, wherein the raw water tank 1 is communicated with the primary reverse osmosis treatment system 2 through a first water inlet pipe 7, and a raw water pump 8 is arranged on the first water inlet pipe 7; the downstream of the first-stage reverse osmosis treatment system 2 is communicated with the second-stage reverse osmosis treatment system 3 through a second water inlet pipe 9, and a high-pressure pump 10, a first back flushing pipe 11 and a first electromagnetic valve 12 are arranged on the second water inlet pipe 9; the downstream of the two-stage reverse osmosis treatment system 3 is communicated with the pure water storage tank 4 through a third water inlet pipe 13, the third water inlet pipe 13 is provided with a pure water pump 15, a second backwashing pipe 16 and a second electromagnetic valve 17, and the first backwashing pipe 11 and the second backwashing pipe 16 are both provided with a backwashing electromagnetic valve 18;
as shown in fig. 7, the primary reverse osmosis treatment system 2 and the secondary reverse osmosis treatment system 3 are controlled by the extension control box 6, a water flow meter 601, a conductivity meter 602, a pressure meter 603 before the membrane, a pressure meter 604 after the membrane, a work indicator lamp 605 and a manual switch 606 are arranged on the front surface of the extension control box 6, the water flow meter 601 detects the flow rate of water by using a liquid level sensor, the conductivity meter 602 detects the conductivity of water in real time by using the water quality, and the work indicator lamp 605 comprises a standby lamp, a normal operation lamp, an abnormal alarm lamp and a maintenance status lamp; the front surface of the branch control box 6 is also provided with a touch display screen 606, and the touch display screen 606 is used for displaying various data and working information of the primary reverse osmosis treatment system 2 and the secondary reverse osmosis treatment system 3;
as shown in fig. 2, the first-stage reverse osmosis treatment system 2 includes a multi-media filter 201, an activated carbon filter 202, a water softener 203 and a precision filter 204, which are sequentially communicated with each other, wherein the multi-media filter 201 is used for removing particulate matters of more than 20um, including silt, rust, colloidal substances and suspended substances contained in raw water; the activated carbon filter 202 is used for adsorbing electrolyte ions and performing ion exchange adsorption; the scale inhibitor is quantitatively put into the water softener 203 and is used for preventing carbonate and SiO2And the crystal precipitation of sulfate; the precision filter 204 is used for removing residual suspended matters, non-bent straight particles and colloid, and a filter element inside the precision filter 204 is a 5um melt-blown filter element and is used for removing impurities larger than 5um leaked by a superior filtering unit; the outer walls of the multi-medium filter 201, the activated carbon filter 202, the water softener 203 and the precision filter 204 are communicated with first flushing branch pipes 14, all the first flushing branch pipes 14 are installed with first water dividing connectors 20, and the first water dividing connectors 20 are installed with first backwashing pipes 11;
as shown in fig. 3, the secondary reverse osmosis treatment system 3 comprises a secondary reverse osmosis tank 301, a deionization mixed bed 302 and a secondary reverse osmosis pure water tank 303 which are sequentially communicated, wherein reverse osmosis membranes are adopted in the secondary reverse osmosis tank 301 and the deionization mixed bed 302 for filtration, and industrial pure water with good water quality and conductivity less than 3us/cm obtained after filtration enters the secondary reverse osmosis pure water tank 303; the outer walls of the secondary reverse osmosis tank 301 and the deionization mixed bed 302 are communicated with second flushing branch pipes 19, all the second flushing branch pipes 19 are installed with second water distribution connectors 21, and the second water distribution connectors 21 are installed with second backwashing pipes 16;
as shown in fig. 3, 8 and 9, the ultrasonic vibration component 5 is mounted at the top of each of the secondary reverse osmosis tank 301 and the deionization mixed bed 302, the ultrasonic vibration component 5 comprises an ultrasonic transducer 501, an amplitude transformer 502 and a transmitting head 503, the amplitude transformer 502 is mounted at the bottom end of the ultrasonic transducer 501, the bottom end of the amplitude transformer 502 penetrates through the secondary reverse osmosis tank 301 and the deionization mixed bed 302 respectively, and the transmitting head 503 is mounted at the bottom end of the amplitude transformer 502; the ultrasonic transducer 501 converts input electric energy into mechanical energy, the ultrasonic transducer 501 makes reciprocating telescopic motion in the longitudinal direction, the amplitude is 3 micrometers, the amplitude transformer 502 is used for amplifying the amplitude and isolating water from the ultrasonic transducer 501, and the transmitting head 503 is directly contacted with the water and can transmit ultrasonic energy into the water; the top center of the emitter 503 is provided with a screw hole 504, the upper end of the screw hole 504 is fixed with a round sleeve 505, the outer wall of the round sleeve 505 is fixed with a fastening bolt 506, the outer wall of the bottom end of the amplitude transformer 502 is provided with an external thread matched with the screw hole 504, and the emitter 503 is cylindrical.
As shown in fig. 4, the side wall of the raw water tank 1 sequentially comprises an outer tank shell 101, a heat exchange cavity 102 and an inner tank shell 103 from outside to inside, and the outer wall of the outer tank shell 101 is communicated with a liquid inlet pipe 104 and a liquid outlet pipe 105; the liquid inlet pipe 104 is disposed below the liquid outlet pipe 105, and the liquid inlet pipe 104 is connected to an external heat exchange liquid delivery pump.
As shown in fig. 5 and 6, a hollow tube 401 is provided inside the pure water storage tank 4, and an ultraviolet disinfection lamp 402 is provided inside the hollow tube 401; the top and bottom ends of the hollow tube 401 are respectively fixed with the top and bottom ends of the inner wall of the pure water storage tank 4, a sealing plate 403 is fixed at the bottom end of the hollow tube 401, a lamp holder 404 is installed at the top end of the hollow tube 401, and an ultraviolet disinfection lamp 402 is installed at the bottom end of the lamp holder 404.
The processing procedure of the device comprises the following steps:
a. raw water in the raw water tank 1 is pressurized by a raw water pump 8 and then enters the primary reverse osmosis treatment system 2;
b. the multi-media filter 201 inside the primary reverse osmosis treatment system 2 first removes particulate matter above 20um and then activatesThe carbon filter 202 adsorbs electrolyte ions and performs ion exchange adsorption, and the water softener 203 is used for preventing carbonate and SiO2And the crystal of the sulfate is precipitated, and then the precision filter 204 is used for removing the impurities which are leaked out by the upper filtering unit and are larger than 5 um;
c. the high-pressure pump 10 pressurizes the raw water filtered by the first-stage reverse osmosis treatment system 2 through the second water inlet pipe 9 and then the raw water enters the second-stage reverse osmosis treatment system 3;
d. obtaining industrial pure water with good water quality and electric conductivity less than 3us/cm under the filtering action of a secondary reverse osmosis tank 301 in the secondary reverse osmosis treatment system 3 and a reverse osmosis membrane in the deionization mixed bed 302, and entering a secondary reverse osmosis pure water tank 303;
e. finally, the industrial pure water is pumped into the pure water storage tank 4 by the pure water pump 15 for sterilization and storage.
Example 2
A two-stage reverse osmosis water treatment device in a pure water treatment process is shown in figures 1-3 and comprises a raw water tank 1, a primary reverse osmosis treatment system 2, a two-stage reverse osmosis treatment system 3 and a pure water storage tank 4, wherein the raw water tank 1 is communicated with the primary reverse osmosis treatment system 2 through a first water inlet pipe 7, and a raw water pump 8 is arranged on the first water inlet pipe 7; the downstream of the first-stage reverse osmosis treatment system 2 is communicated with the second-stage reverse osmosis treatment system 3 through a second water inlet pipe 9, and a high-pressure pump 10, a first back flushing pipe 11 and a first electromagnetic valve 12 are arranged on the second water inlet pipe 9; the downstream of the two-stage reverse osmosis treatment system 3 is communicated with the pure water storage tank 4 through a third water inlet pipe 13, the third water inlet pipe 13 is provided with a pure water pump 15, a second backwashing pipe 16 and a second electromagnetic valve 17, and the first backwashing pipe 11 and the second backwashing pipe 16 are both provided with a backwashing electromagnetic valve 18;
as shown in fig. 7, the primary reverse osmosis treatment system 2 and the secondary reverse osmosis treatment system 3 are controlled by the extension control box 6, a water flow meter 601, a conductivity meter 602, a pressure meter 603 before the membrane, a pressure meter 604 after the membrane, a work indicator lamp 605 and a manual switch 606 are arranged on the front surface of the extension control box 6, the water flow meter 601 detects the flow rate of water by using a liquid level sensor, the conductivity meter 602 detects the conductivity of water in real time by using the water quality, and the work indicator lamp 605 comprises a standby lamp, a normal operation lamp, an abnormal alarm lamp and a maintenance status lamp; the front surface of the branch control box 6 is also provided with a touch display screen 606, and the touch display screen 606 is used for displaying various data and working information of the primary reverse osmosis treatment system 2 and the secondary reverse osmosis treatment system 3;
as shown in fig. 2, the first-stage reverse osmosis treatment system 2 includes a multi-media filter 201, an activated carbon filter 202, a water softener 203 and a precision filter 204, which are sequentially communicated with each other, wherein the multi-media filter 201 is used for removing particulate matters of more than 20um, including silt, rust, colloidal substances and suspended substances contained in raw water; the activated carbon filter 202 is used for adsorbing electrolyte ions and performing ion exchange adsorption; the scale inhibitor is quantitatively put into the water softener 203 and is used for preventing carbonate and SiO2And the crystal precipitation of sulfate; the precision filter 204 is used for removing residual suspended matters, non-bent straight particles and colloid, and a filter element inside the precision filter 204 is a 5um melt-blown filter element and is used for removing impurities larger than 5um leaked by a superior filtering unit; the outer walls of the multi-medium filter 201, the activated carbon filter 202, the water softener 203 and the precision filter 204 are communicated with first flushing branch pipes 14, all the first flushing branch pipes 14 are installed with first water dividing connectors 20, and the first water dividing connectors 20 are installed with first backwashing pipes 11;
as shown in fig. 3, the secondary reverse osmosis treatment system 3 comprises a secondary reverse osmosis tank 301, a deionization mixed bed 302 and a secondary reverse osmosis pure water tank 303 which are sequentially communicated, wherein reverse osmosis membranes are adopted in the secondary reverse osmosis tank 301 and the deionization mixed bed 302 for filtration, and industrial pure water with good water quality and conductivity less than 3us/cm obtained after filtration enters the secondary reverse osmosis pure water tank 303; the outer walls of the secondary reverse osmosis tank 301 and the deionization mixed bed 302 are communicated with second flushing branch pipes 19, all the second flushing branch pipes 19 are installed with second water distribution connectors 21, and the second water distribution connectors 21 are installed with second backwashing pipes 16;
as shown in fig. 10, the ultrasonic vibration component 5 is mounted at the top of each of the secondary reverse osmosis tank 301 and the deionization mixed bed 302, the ultrasonic vibration component 5 comprises an ultrasonic transducer 501, an amplitude transformer 502 and a transmitting head 503, the amplitude transformer 502 is mounted at the bottom end of the ultrasonic transducer 501, the bottom end of the amplitude transformer 502 penetrates through the secondary reverse osmosis tank 301 and the deionization mixed bed 302 respectively, and the transmitting head 503 is mounted at the bottom end of the amplitude transformer 502; the ultrasonic transducer 501 converts input electric energy into mechanical energy, the ultrasonic transducer 501 makes reciprocating telescopic motion in the longitudinal direction, the amplitude is 5 micrometers, the amplitude transformer 502 is used for amplifying the amplitude and isolating water from the ultrasonic transducer 501, and the transmitting head 503 is directly contacted with the water and can transmit ultrasonic energy into the water; the top surface center position of the emitter 503 is provided with a screw hole 504, the upper end of the screw hole 504 is fixed with a round sleeve 505, the outer wall of the round sleeve 505 is fixed with a fastening bolt 506, the outer wall of the bottom end of the amplitude transformer 502 is provided with an external thread matched with the screw hole 504, and the emitter 503 is cylindrical and is formed by connecting 3 spherical bodies in series up and down.
As shown in fig. 4, the side wall of the raw water tank 1 sequentially comprises an outer tank shell 101, a heat exchange cavity 102 and an inner tank shell 103 from outside to inside, and the outer wall of the outer tank shell 101 is communicated with a liquid inlet pipe 104 and a liquid outlet pipe 105; the liquid inlet pipe 104 is disposed below the liquid outlet pipe 105, and the liquid inlet pipe 104 is connected to an external heat exchange liquid delivery pump.
As shown in fig. 5 and 6, a hollow tube 401 is provided inside the pure water storage tank 4, and an ultraviolet disinfection lamp 402 is provided inside the hollow tube 401; the top and bottom ends of the hollow tube 401 are respectively fixed with the top and bottom ends of the inner wall of the pure water storage tank 4, a sealing plate 403 is fixed at the bottom end of the hollow tube 401, a lamp holder 404 is installed at the top end of the hollow tube 401, and an ultraviolet disinfection lamp 402 is installed at the bottom end of the lamp holder 404.
The processing procedure of the device comprises the following steps:
a. raw water in the raw water tank 1 is pressurized by a raw water pump 8 and then enters the primary reverse osmosis treatment system 2;
b. the multi-media filter 201 in the first-stage reverse osmosis treatment system 2 firstly removes the particulate matter above 20um, then the activated carbon filter 202 adsorbs the electrolyte ions and performs ion exchange adsorption, and then the water softener 203 is used for preventing carbonate and SiO2And the crystal of the sulfate is precipitated, and then the precision filter 204 is used for removing the impurities which are leaked out by the upper filtering unit and are larger than 5 um;
c. the high-pressure pump 10 pressurizes the raw water filtered by the first-stage reverse osmosis treatment system 2 through the second water inlet pipe 9 and then the raw water enters the second-stage reverse osmosis treatment system 3;
d. obtaining industrial pure water with good water quality and electric conductivity less than 3us/cm under the filtering action of a secondary reverse osmosis tank 301 in the secondary reverse osmosis treatment system 3 and a reverse osmosis membrane in the deionization mixed bed 302, and entering a secondary reverse osmosis pure water tank 303;
e. finally, the industrial pure water is pumped into the pure water storage tank 4 by the pure water pump 15 for sterilization and storage.
After the working of the embodiment 1 and the embodiment 2 is finished, the second-stage reverse osmosis treatment system 3 can be cleaned firstly, at this time, the second electromagnetic valve 17 is closed and the back flushing electromagnetic valve 18 on the second back flushing pipe 16 is opened, so that the pure water pump 15 can pressurize and impact pure water to the back of the reverse osmosis membrane in the second-stage reverse osmosis tank 301 and the deionization mixing bed 302, and the reverse osmosis membrane can be cleaned; the ultrasonic vibration component 5 at the top of the secondary reverse osmosis tank 301 and the deionization mixed bed 302 can further start to work, the ultrasonic vibration component 5 comprises an ultrasonic transducer 501, an amplitude transformer 502 and an emitting head 503, the ultrasonic transducer 501 can convert electric energy into ultrasonic energy, the amplitude transformer 502 can amplify the amplitude and transmit the amplitude to the emitting head 503, and finally the emitting head 503 can transmit the ultrasonic energy to water, reverse osmosis membranes and reverse osmosis membrane surface dirt and enable the water, reverse osmosis membranes and reverse osmosis membrane surface dirt to generate resonance, because the oscillation frequencies of the water, reverse osmosis membranes and reverse osmosis membrane surface dirt are different, water molecules are violently collided, strong impact force is generated to impact the reverse osmosis membrane surface dirt, the impact force is crisp, peeled, fallen and crushed, so that the reverse osmosis membrane surface is cleaned and combined with back flushing, the water permeability of the reverse osmosis membranes can be effectively improved, and the filtering effect of, the quality of the pure water is improved; in addition, the amplitude transformer 502 and the transmitting head 503 are installed in a threaded manner, so that the combined length of the amplitude transformer 502 and the transmitting head 503 can be changed, and when ultrasonic energy transmitted by the ultrasonic transducer 501 is received, the transmitting head 503 can be adjusted to execute different amplitudes due to different combined lengths, and the cleaning effect of the reverse osmosis membrane can be adjusted.
After the interior of the secondary reverse osmosis treatment system 3 is cleaned, the primary reverse osmosis treatment system 2 can be cleaned, at this time, the first electromagnetic valve 12 on the second water inlet pipe 9 is closed, the back flushing electromagnetic valve 18 on the first back flushing pipe 11 is opened, and at this time, the filtered water is respectively impacted into the multi-media filter 201, the activated carbon filter 202, the water softener 203 and the precision filter 204 by the high-pressure pump 10, so that the interior of the primary reverse osmosis treatment system 2 can be cleaned.
In the embodiments 1 and 2, the heat exchange liquid can be conveyed to the inside of the heat exchange cavity 102 from the liquid inlet pipe 104 through an external heat exchange liquid conveying pump, and when the temperature of raw water is too high, the cooling liquid can be used, so that the heat in the raw water can be recycled, and the energy is saved and the environment is protected; when the temperature of the raw water is too low, hot oil can be used, and the temperature of the raw water can be increased by the hot oil, so that the problem that the flowing speed of the raw water is too low can be avoided; the inside of pure water storage box 4 is equipped with hollow tube 401, and the inside of hollow tube 401 is equipped with ultraviolet disinfection lamp 402, and ultraviolet disinfection lamp 402 can be even after the circular telegram give off the ultraviolet ray to all around to can kill still microorganism and bacterium in the pure water.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a second grade reverse osmosis water treatment facilities in pure water treatment process, includes former water tank (1), one-level reverse osmosis processing system (2), second grade reverse osmosis processing system (3) and pure water storage box (4), its characterized in that: the raw water tank (1) is communicated with the primary reverse osmosis treatment system (2) through a first water inlet pipe (7), and a raw water pump (8) is arranged on the first water inlet pipe (7).
2. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 2, wherein: the downstream of the first-stage reverse osmosis treatment system (2) is provided with a second water inlet pipe (9)) The second water inlet pipe (9) is provided with a high-pressure pump (10), a first backwashing pipe (11) and a first electromagnetic valve (12); the downstream of the secondary reverse osmosis treatment system (3) is communicated with a pure water storage tank (4) through a third water inlet pipe (13), a pure water pump (15), a second backwashing pipe (16) and a second electromagnetic valve (17) are arranged on the third water inlet pipe (13), and backwashing electromagnetic valves (18) are arranged on the first backwashing pipe (11) and the second backwashing pipe (16); the primary reverse osmosis treatment system (2) and the secondary reverse osmosis treatment system (3) are controlled by an extension control box (6), a water flow meter (601), a conductivity meter (602), a pressure meter before membrane (603), a pressure meter after membrane (604), a work indicator lamp (605) and a manual switch (606) are arranged on the front surface of the extension control box (6), the water flow meter (601) detects the flow of water by using a liquid level sensor, the conductivity meter (602) detects the conductivity of water in real time by using the water quality, and the work indicator lamp (605) comprises a standby lamp, a normal operation lamp, an abnormal alarm lamp and a maintenance state lamp; the primary reverse osmosis treatment system (2) comprises a multi-media filter (201), an activated carbon filter (202), a water softener (203) and a precision filter (204) which are sequentially communicated, wherein the multi-media filter (201) is used for removing particulate matters of more than 20um, including silt, rust, colloidal substances and suspended matters contained in raw water; the activated carbon filter (202) is used for adsorbing electrolyte ions and carrying out ion exchange adsorption; the scale inhibitor is quantitatively put into the water softener (203) and is used for preventing carbonate and SiO2And the crystal precipitation of sulfate; the precision filter (204) is used for removing residual suspended matters, non-bent straight particles and colloid, and a filter element in the precision filter (204) is a 5um melt-blown filter element and is used for removing impurities larger than 5um leaked by a superior filtering unit; the outer walls of the multi-medium filter (201), the activated carbon filter (202), the water softener (203) and the precision filter (204) are communicated with a first flushing branch pipe (14), and all the first flushing branch pipes are communicated with a water inlet pipeThe branch pipes (14) are all installed with a first water dividing joint (20), and the first water dividing joint (20) is installed with the first backwashing pipe (11); the secondary reverse osmosis treatment system (3) comprises a secondary reverse osmosis tank (301), a deionization mixed bed (302) and a secondary reverse osmosis pure water tank (303) which are sequentially communicated, reverse osmosis membranes are adopted for filtering in the secondary reverse osmosis tank (301) and the deionization mixed bed (302), and industrial pure water with good water quality and electric conductivity less than 3us/cm obtained after filtering enters the secondary reverse osmosis pure water tank (303); the outer walls of the secondary reverse osmosis tank (301) and the deionization mixing bed (302) are communicated with second flushing branch pipes (19), all the second flushing branch pipes (19) are installed with second water distribution connectors (21), and the second water distribution connectors (21) are installed with second backwashing pipes (16); the tops of the secondary reverse osmosis tank (301) and the deionization mixing bed (302) are both provided with an ultrasonic vibration component (5), the ultrasonic vibration component (5) comprises an ultrasonic transducer (501), an amplitude transformer (502) and a transmitting head (503), the bottom end of the ultrasonic transducer (501) is provided with the amplitude transformer (502), the bottom end of the amplitude transformer (502) respectively penetrates into the secondary reverse osmosis tank (301) and the deionization mixing bed (302), the bottom end of the amplitude transformer (502) is provided with the transmitting head (503), the ultrasonic transducer (501) converts the input electric energy into mechanical energy, the ultrasonic transducer (501) makes reciprocating telescopic motion in the longitudinal direction, the amplitude is 3-5 mu m, the amplitude transformer (502) is used for amplifying amplitude and isolating water from the ultrasonic transducer (501), the transmitting head (503) is in direct contact with the water and can transmit ultrasonic energy into the water.
3. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 2, wherein: the top surface center position of the emitter head (503) is provided with a screw hole (504), the upper end of the screw hole (504) is fixed with a round sleeve (505), the outer wall of the round sleeve (505) is fixed with a fastening bolt (506), and the outer wall of the bottom end of the amplitude transformer (502) is provided with an external thread matched with the screw hole (504).
4. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 3, wherein: the emitting head (503) is cylindrical or is formed by connecting a plurality of spherical bodies in series up and down.
5. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 2, wherein: the side wall of the raw water tank (1) sequentially comprises an outer tank shell (101), a heat exchange cavity (102) and an inner tank shell (103) from outside to inside, and the outer wall of the outer tank shell (101) is communicated with a liquid inlet pipe (104) and a liquid outlet pipe (105).
6. The apparatus for treating secondary reverse osmosis water in pure water treatment process according to claim 5, wherein: the liquid inlet pipe (104) is arranged below the liquid outlet pipe (105), and the liquid inlet pipe (104) is connected with an external heat exchange liquid conveying pump.
7. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 2, wherein: the inside of pure water storage tank (4) is equipped with hollow tube (401), the inside of hollow tube (401) is equipped with ultraviolet disinfection lamp (402).
8. The apparatus for treating secondary reverse osmosis water in pure water treatment process according to claim 7, wherein: the top and the bottom ends of the hollow tube (401) are respectively fixed with the top and the bottom ends of the inner wall of the pure water storage tank (4), a sealing plate (403) is fixed at the bottom end of the hollow tube (401), a lamp holder (404) is installed at the top end of the hollow tube (401), and the ultraviolet disinfection lamp (402) is installed at the bottom end of the lamp holder (404).
9. The apparatus for treating secondary reverse osmosis water in a pure water treatment process according to claim 2, wherein: the front of extension control box (6) still is equipped with touch display screen (606), touch display screen (606) are used for showing first-level reverse osmosis treatment system (2) and each item data and the work information of second grade reverse osmosis treatment system (3).
10. The apparatus for treating secondary reverse osmosis water in pure water treatment process according to claim 2, wherein the treatment process comprises the following steps:
a. raw water in the raw water tank (1) is pressurized by a raw water pump (8) and then enters the primary reverse osmosis treatment system (2);
b. the multi-media filter (201) in the first-stage reverse osmosis treatment system (2) firstly removes the particulate matters more than 20um, then the active carbon filter (202) adsorbs electrolyte ions and carries out ion exchange adsorption, and then the water softener (203) is used for preventing carbonate and SiO2And the crystal of the sulfate is precipitated, and then a precision filter (204) is used for removing impurities which are leaked out by a superior filtering unit and are larger than 5 um;
c. the high-pressure pump (10) pressurizes the raw water filtered by the first-stage reverse osmosis treatment system (2) through the second water inlet pipe (9) and then the raw water enters the second-stage reverse osmosis treatment system (3);
d. obtaining industrial pure water with good water quality and electric conductivity less than 3us/cm under the filtering action of a secondary reverse osmosis tank (301) in the secondary reverse osmosis treatment system (3) and a reverse osmosis membrane in the deionization mixing bed (302) and feeding the industrial pure water into a secondary reverse osmosis pure water tank (303);
e. finally, the industrial pure water is pumped into the pure water storage tank (4) by a pure water pump (15) for sterilization and storage.
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