CN212999357U - Reverse osmosis device - Google Patents
Reverse osmosis device Download PDFInfo
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- CN212999357U CN212999357U CN202021697995.9U CN202021697995U CN212999357U CN 212999357 U CN212999357 U CN 212999357U CN 202021697995 U CN202021697995 U CN 202021697995U CN 212999357 U CN212999357 U CN 212999357U
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Abstract
The utility model discloses a reverse osmosis device, which is provided with a plurality of high-pressure containers, wherein a plurality of reverse osmosis membrane elements are arranged in the high-pressure containers; the reverse osmosis membrane element comprises a water inlet separation net, a reverse osmosis membrane and a pure water diversion cloth, wherein the water inlet separation net, the reverse osmosis membrane and the pure water diversion cloth are provided with a plurality of layers; a water collecting pipe is also arranged in the high-pressure container; one side of the water collecting distribution pipe, which is close to the water inlet section, is provided with a membrane plug, and the membrane plug is provided with a sealing ring. The utility model provides a reverse osmosis device, which adopts a cross flow filtration mode to reduce the thickness of a membrane surface concentration polarization layer and can effectively reduce membrane pollution; resistance tubing is adopted to increase the flow of the permeated water at low pressure on the whole, so that the cost is reduced; through setting up preprocessing device, improve the water supply condition, reach reverse osmosis system's the requirement of intaking to protect the reverse osmosis ware, prolong the life of membrane.
Description
Technical Field
The utility model relates to a waste water treatment technical field, more specifically the utility model relates to a reverse osmosis unit that says so.
Background
Osmosis is a natural process when fluids are crossing a semi-permeable membrane barrier. If a tank of pure water is divided vertically into two parts by a semi-permeable membrane, the pure water is in contact with both sides of the ideal semi-permeable membrane at the same temperature and pressure, under such conditions no flow of water across the semi-permeable membrane occurs, because the chemical potentials on both sides of the membrane are exactly equal. If a soluble salt is added to one side of the solution, the chemical potential of the salt solution side is reduced and pure water will permeate the salt solution side, thereby creating an osmotic flow until the equilibrium of the chemical potential is reestablished.
Reverse Osmosis (abbreviated as RO), also known as Reverse Osmosis, is a membrane separation operation that uses a pressure differential as a driving force to separate a solvent from a solution. The feed solution on one side of the membrane is pressurized and when the pressure exceeds its osmotic pressure, the solvent will reverse osmosis against the direction of natural osmosis. Because the membrane aperture of the RO membrane is very small, dissolved salts, colloids, microorganisms, organic matters and the like in water can be effectively removed. Therefore, reverse osmosis technology has received extensive attention and use. The RO reverse osmosis system is the most advanced, effective and energy-saving membrane separation technology in the world, and mainly removes dissolved salts in water and organic macromolecules and the like.
However, the RO membrane itself is very dense, and the membrane pore diameter is below 1nm, so that the pollution of the RO membrane is inevitable. Moreover, with the prolonged operation time, various pollutants easily block membrane pores, and a pollution layer is formed on the membrane surface, so that the membrane flux and the desalination rate are influenced. In order to improve the cleaning effect, reduce the replacement frequency of the RO membrane and reduce the operation cost, it is very important to find a reverse osmosis device for improving the utilization rate of the RO membrane.
Therefore, how to provide a reverse osmosis device which can save cost and reduce membrane surface pollution is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a reverse osmosis device aiming at the defects in the prior art, which adopts a cross flow filtration mode to reduce the thickness of a membrane surface concentration polarization layer and can effectively reduce membrane pollution; so as to achieve the solute dissolved in water, and the separation of the solvent and the solute is realized through the semipermeable membrane to obtain pure water; resistance tubing is adopted to increase the flow of the permeated water at low pressure on the whole, so that the cost is reduced; through the arrangement of the pretreatment device, the water supply condition is improved, and the water supply condition meets the water inlet requirement of the reverse osmosis system, so that the reverse osmosis device is protected, and the service life of the membrane is prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a reverse osmosis device comprises a reverse osmosis device, wherein the reverse osmosis device is provided with a plurality of high-pressure containers, and a plurality of reverse osmosis membrane elements are arranged in the high-pressure containers;
the reverse osmosis membrane element comprises a water inlet separation net, a reverse osmosis membrane and a pure water diversion cloth, wherein the water inlet separation net, the reverse osmosis membrane and the pure water diversion cloth are provided with a plurality of layers;
a water collecting pipe is further arranged in the high-pressure container, the reverse osmosis membrane elements are bonded on the water collecting pipe, the reverse osmosis membrane elements are connected in series through the water collecting pipe, and the reverse osmosis membrane is an anti-pollution membrane;
the membrane end cap is arranged on one side, close to the water inlet section, of the water collecting distribution pipe, the membrane end cap seat is arranged at the water inlet end of the high-pressure container, the membrane end cap comprises a screw portion, the screw portion is in threaded connection with the membrane end cap seat, an adjusting nut is sleeved on the screw portion, and the membrane end cap is provided with a sealing ring.
The technical effect of adopting the technical scheme is as follows: the cross-flow filtration of the membrane is adopted to prepare pure water, so that the treated feed liquid flows across the membrane surface at a certain speed, the permeate liquid permeates the membrane from the vertical direction, and meanwhile, most of the retentate is carried out of the membrane component by the concentrated solution, the thickness of a concentration polarization layer of the membrane surface is reduced in a cross-flow filtration mode, and the membrane pollution can be effectively reduced; so as to achieve solute (salinity) dissolved in water, realize the separation of the solvent and the solute through the semipermeable membrane, obtain pure water, remove residual components such as surfactant in the water body and soften the water body.
The anti-pollution type membrane adopts an anti-pollution type BWFR-365 reverse osmosis membrane of Dow company, and the single membrane desalination rate can be more than 99.6%; the anti-pollution type membrane can also adopt an anti-pollution membrane of the Japan Heidence company, and the salt rejection rate of a single membrane can be more than 99.6 percent.
A series of control valves, monitoring instruments and program-controlled operating systems are arranged on water inlet, water production and concentrated water pipelines of the high-pressure container, so that the long-term quality and quantity guarantee systematic operation of the equipment is ensured. The design flux of the RO membrane element (reverse osmosis membrane element) is not more than the recommended value specified by the guide of the membrane element manufacturer, and is selected at a low value. And reasonable arrangement and combination are selected to ensure normal operation and reasonable cleaning period of the membrane element. The water supply and chemical adding type and point of the reverse osmosis device, and the selection of the chemical cleaning liquid is determined according to the water quality of the water supply and the characteristics of the membrane module of the reverse osmosis device.
Furthermore, two sides of the reverse osmosis device are respectively provided with a water inlet and a water outlet, and the two water outlets are respectively a pure water outlet and a concentrated liquid outlet;
the water collecting pipe is connected with the pure water outlet, the pure water outlet is connected with a pure water outlet pipeline, and the water inlet is connected with a water inlet pipeline; the concentrated solution outlet is connected with a concentrated solution outlet main pipeline and is branched into a concentrated solution recovery pipeline and a concentrated solution discharge pipeline, and the concentrated solution recovery pipeline is connected with the high-pressure pump through a pipeline.
The technical effect of adopting the technical scheme is as follows: the concentrated solution recovery pipeline of the reverse osmosis device can carry out reverse osmosis treatment again through the high-pressure pump, so that the circulating wastewater treatment process is realized.
Furthermore, the water inlet pipeline is provided with a water inlet flow meter and a pressure meter, the pure water outlet pipeline is provided with a water outlet flow meter and a conductivity meter, and the concentrated solution recovery pipeline and the concentrated solution discharge pipeline are provided with a flow stabilizing valve and a flow meter.
The technical effect of adopting the technical scheme is as follows: the pressure gauge realizes feedback control of the water inlet pump and the high-pressure pump through pressure detection of the pipeline, the flow stabilizing valve and the flow meter detect to control the recovery rate of water, the water inlet flowmeter and the water outlet flowmeter control the inflow and the output water amount of water, and the conductivity meter detects the conductivity value of water quality.
The pipeline and the valve which are enough to connect the cleaning liquid to enter and exit are arranged on the water supply and concentrated water inlet and outlet main pipes of each section of the reverse osmosis device, the pipeline of the reverse osmosis device is provided with an explosion-proof membrane, and the reverse osmosis device is also provided with an inlet check valve and an original check valve.
Furthermore, the water collecting pipe is also provided with a resistance pipe, and the resistance pipe is arranged in the water collecting pipe and close to one side of the water inlet; the opening ratio of the opening on the side surface of the resistance pipe is smaller than the opening ratio of a through hole provided on the side surface of the water collection pipe through which permeate water that has permeated through the reverse osmosis membrane flows. Further, the resistance pipe can narrow the inner diameter of the water collection pipe.
The technical effect of adopting the technical scheme is as follows: the use of the resistance piping having a small aperture ratio can reduce the amount of permeated water collected in the water collection piping, can reduce the amount of reverse osmosis of the treated water on the permeated water supply side, and can increase the amount of treated water on the concentrated water side and reduce the salt concentration by reducing the amount of permeated water on the supplied water side, thereby finally increasing the flow rate of the final stage of permeated water. Through increasing the holistic volume of permeating water of device, can make reverse osmosis membrane element's the volume of permeating water more even, realize increasing the flow of permeating water with the low pressure on the whole, and then reduce cost.
Further, high-pressure vessel is provided with sample valve and sampling tube, the sample valve is the CPVC material, the sampling tube is the PE hose. Every high-pressure vessel product water pipe of every set of reverse osmosis unit establishes the sampling point, and the sample valve is concentrated and is arranged in sample water drainage tank top.
Furthermore, the reverse osmosis device is also provided with a program starting and stopping device and a combined frame, and the high-pressure container and the program starting and stopping device are both arranged on the combined frame.
The technical effect of adopting the technical scheme is as follows: a program starting and stopping device is arranged, and automatic flushing can be delayed after the device is stopped; all pipelines and joints are arranged on the combined frame, the combined frame further comprises all supports, fasteners, clamps and other accessories, the pipelines, the flanges and the valves are made of corrosion-resistant stainless steel or other materials with similar performance, the pipelines, the flanges and the valves are made of hoses with the same pressure-resistant grade, and the combined frame meets the requirements of the plant site on seismic intensity and the expansion of components.
Furthermore, the reverse osmosis device is connected in series and is provided with more than two, and a valve, an intermediate water tank, a high-pressure pump and a pressure gauge are sequentially arranged between the reverse osmosis devices.
The technical effect of adopting the technical scheme is as follows: through setting up a plurality of reverse osmosis unit of establishing ties, can provide waste water treatment efficiency, shorten process time.
Further, the device comprises a pretreatment device, a booster pump, a cartridge filter, a high-pressure pump and a cleaning system, wherein the pretreatment device is sequentially connected with the booster pump, the cartridge filter, the high-pressure pump, the reverse osmosis device and the cleaning system through pipelines.
Further, preprocessing device includes former water tank, former water pump, medium filter, active carbon filter, salt case and demineralizer, former water tank in proper order with former water pump the medium filter the active carbon filter with the demineralizer passes through the pipe connection, the demineralizer with the booster pump passes through the pipe connection, the salt case with the demineralizer passes through the pipe connection.
The technical effect of adopting the technical scheme is as follows: suspended particles with the diameter larger than 10um are filtered by the medium filter, peculiar smell, residual chlorine, heavy metal ions, organic carcinogens and the like in water are removed by the activated carbon filter, scale formation of scale by calcium, magnesium and other scaling substances in the system is greatly reduced by the softener, water supply conditions are improved, and the water inlet requirement of the reverse osmosis system is met, so that the reverse osmosis device is protected, and the service life of the membrane is prolonged.
Furthermore, a valve and a pressure gauge are arranged on a pipeline between the raw water pump and the medium filter.
Furthermore, the device also comprises a pure water tank, a transmission pump, an ultraviolet sterilizer and a precision filter, wherein the reverse osmosis device is sequentially connected with the pure water tank, the transmission pump, the ultraviolet sterilizer and the precision filter through pipelines.
The technical effect of adopting the technical scheme is as follows: the produced water can be directly recycled through post-treatment such as sterilization and filtration of the pure water.
Known via foretell technical scheme, compare with prior art, the utility model discloses a reverse osmosis unit has following technological effect:
(1) the utility model provides a reverse osmosis device, which adopts a cross flow filtration mode to reduce the thickness of a membrane surface concentration polarization layer, and can effectively reduce membrane pollution; so as to achieve solute (salinity) dissolved in water, realize the separation of the solvent and the solute through the semipermeable membrane, obtain pure water, remove residual components such as surfactant in the water body and soften the water body.
(2) The utility model provides a reverse osmosis unit adopts the less resistance piping of aperture ratio can make the volume of the permeate water that collects the piping reduce, can reduce the volume of the reverse osmosis that is permeated through the feed water side by the treated water, through reducing the volume of the permeate water of feed water side, and then increases the treated water volume of concentrated water side, reduces salt concentration, finally can increase the flow of the permeate water of final grade. Through increasing the holistic volume of permeating water of device, can make reverse osmosis membrane element's the volume of permeating water more even, realize increasing the flow of permeating water with the low pressure on the whole, and then reduce cost.
(3) The utility model provides a reverse osmosis unit, manometer realize the feedback control to intake pump and high-pressure pump through detecting pipeline pressure, and flow stabilizing valve and flowmeter detect the rate of recovery with the control water, the inflow of intake flowmeter and play water flowmeter control water and the water yield of output, the conductivity meter detects the conductivity value of quality of water.
(4) The utility model provides a reverse osmosis unit sets up preprocessing device, is greater than 10 um's suspended particle through the medium filter filtering diameter, gets rid of peculiar smell, chlorine residue, heavy metal ion, organic carcinogen etc. of aquatic through the activated carbon filter, forms the scale through scale deposit material such as calcium, magnesium in the softener greatly reduced system, improves the water supply condition, makes it reach reverse osmosis system's the requirement of intaking to protect reverse osmosis unit, and the life of extension membrane.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of the embodiment of the present invention.
FIG. 2 is a schematic diagram showing the overall structure of the reverse osmosis apparatus.
FIG. 3 is a schematic view showing the internal structure of the high-pressure vessel.
Wherein, in FIG. 1;
1 is a pretreatment device, 2 is a security filter, 3 is a first-stage high-pressure pump, 4 is a first-stage reverse osmosis device, 5 is an intermediate water tank, 6 is a second-stage high-pressure pump, 7 is a second-stage reverse osmosis device, 8 is a pure water tank, 9 is a transfer pump, 10 is an ultraviolet sterilizer, 11 is a raw water tank, 12 is a raw water pump, 13 is a medium filter, 14 is an activated carbon filter, 15 is a softener, 16 is a salt tank, 17 is a booster pump, and 18 is a precision filter.
In FIG. 2;
40 is a combined frame, 41 is a high-pressure container, 42 is a water inlet, 43 is a water inlet pipeline, 44 is a pressure gauge, 45 is a concentrated liquid water outlet, 46 is a concentrated liquid water outlet main pipeline, 47 is a flowmeter, 48 is a pure water outlet, and 49 is a pure water outlet pipeline.
In FIG. 3;
a reverse osmosis membrane element 411, a reverse osmosis membrane 412, a resistance pipe 413, a water collecting pipe 414, a membrane plug 415, a screw part 416, a membrane plug seat 417, an adjusting nut 418, and a sealing ring 419.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The embodiment provides a reverse osmosis device, as shown in fig. 1, which comprises a pretreatment device 1, a booster pump 17, a cartridge filter 2, a primary high-pressure pump 3, a reverse osmosis device and a cleaning system, wherein the pretreatment device 1 is sequentially connected with the booster pump 17, the cartridge filter 2, the primary high-pressure pump 3, the reverse osmosis device and the cleaning system through pipelines.
Wherein, the reverse osmosis unit sets up two in series, one-level reverse osmosis unit 4 and second grade reverse osmosis unit 7, has set gradually valve, middle water tank 5, second grade high-pressure pump 6 and manometer between one-level reverse osmosis unit 4 and the second grade reverse osmosis unit 7. The first-stage reverse osmosis device 4 and the second-stage reverse osmosis device 7 are also provided with reverse osmosis filter water inlet pumps, and the cleaning system is provided with a cleaning pump.
The pretreatment device 1 comprises a raw water tank 11, a raw water pump 12, a medium filter 13, an activated carbon filter 14, a salt tank 16 and a softener 15, wherein the raw water tank 11 is sequentially connected with the raw water pump 12, the medium filter 13, the activated carbon filter 14 and the softener 15 through pipelines, the softener 15 is connected with a booster pump through a pipeline, and the salt tank 16 is connected with the softener 15 through a pipeline. A valve and a pressure gauge are arranged on a pipeline between the raw water pump 12 and the medium filter 13.
The reverse osmosis device also comprises a pure water tank 8, a transfer pump 9, an ultraviolet sterilizer 10 and a precision filter 18, wherein the secondary reverse osmosis device 7 is sequentially connected with the pure water tank 8, the transfer pump 9, the ultraviolet sterilizer 10 and the precision filter 18 through pipelines.
As shown in fig. 2, each reverse osmosis device is provided with three high-pressure containers, two water inlets 42 and two water outlets are respectively arranged at two sides of the reverse osmosis device, and the two water outlets are respectively a pure water outlet 48 and a concentrated solution outlet 45; the pure water outlet 48 is connected with a pure water outlet pipeline 49, and the water inlet 42 is connected with a water inlet pipeline 43; the concentrated solution outlet 45 is connected with a concentrated solution outlet main pipeline 46 and is branched into a concentrated solution recovery pipeline and a concentrated solution discharge pipeline, and the concentrated solution recovery pipeline is connected with the high-pressure pump 3 through a pipeline. The water inlet pipeline 43 is provided with a water inlet flowmeter and a pressure gauge, the pure water outlet pipeline 48 is provided with a water outlet flowmeter and a conductivity meter, and the concentrated liquid recovery pipeline and the concentrated liquid discharge pipeline are provided with a flow stabilizing valve and a flow meter.
As shown in fig. 3, six reverse osmosis membrane elements 411 are arranged in the high-pressure container 41, each reverse osmosis membrane element 411 comprises a water inlet separation net, a reverse osmosis membrane and a pure water guide cloth, the water inlet separation net, the reverse osmosis membrane and the pure water guide cloth are provided with multiple layers, the water inlet separation net and/or the pure water guide cloth are of a multi-supporting-point structure, pressure-bearing contact points of the reverse osmosis membrane elements can be effectively increased, the pressure-resisting capacity of the reverse osmosis membrane elements is improved, meanwhile, the flow passage area of inlet water or pure water is increased, and the water flux of the membrane elements can be.
A water collecting pipe 414 is further provided in the high-pressure vessel, the reverse osmosis membrane elements 411 are bonded to the water collecting pipe 414, the plurality of reverse osmosis membrane elements 411 are connected in series by the water collecting pipe 414, the reverse osmosis membrane 412 is an anti-contamination type membrane, specifically, an anti-contamination type BWFR-365 by dow corporation, usa, and the water collecting pipe 414 is connected to the pure water outlet 48. Water collecting pipe 414 is close to water inlet section one side and is provided with membrane end cap 415, and high pressure vessel 41 water inlet end is provided with membrane end cap seat 417, and membrane end cap 415 includes screw rod portion 416, screw rod portion 416 and membrane end cap seat 417 threaded connection, and screw rod portion 416 cover is equipped with an adjusting nut 418, and membrane end cap 415 is provided with sealing washer 419, the utility model has the advantages of simple and easy when installation and dismantlement to intensity of labour and time have significantly reduced.
The water collecting pipe 414 is further provided with a resistance pipe 413, and the resistance pipe 413 is arranged at one side close to the water inlet 42 in the water collecting pipe 414; the opening ratio of the opening on the side surface of the resistance pipe 413 is smaller than the opening ratio of the through hole provided on the side surface of the water collection pipe 414 through which the permeate passing through the reverse osmosis membrane 412 flows.
The high pressure vessel 41 is provided with a sampling valve and a sampling pipe, the sampling valve is made of CPVC material, and the sampling pipe is a PE hose. The first-stage reverse osmosis device 4 and the second-stage reverse osmosis device 7 are also provided with a program start-stop device and a combined frame 40, and a high-pressure container 41 is arranged on the combined frame 40.
The reverse osmosis device provided according to the embodiment is used as follows:
the raw water can be domestic sewage, industrial wastewater, shield slurry water, or treated water obtained by primarily precipitating and filtering the sewage to remove heavy metal ions, suspended matters and the like, and the raw water can be used for removing water ions and salt so as to enable the water body to reach the standard.
Raw water passes through a raw water pump 12 from a raw water tank 11, the raw water is pumped into a medium filter 13, suspended particles with the diameter larger than 10um are filtered by the medium filter 13 and then enter an activated carbon filter 14, peculiar smell, residual chlorine, heavy metal ions, organic carcinogens and the like in the water are removed by the activated carbon filter 14 and then enter a softener 15, scale formation caused by scale substances such as calcium, magnesium and the like in the system is greatly reduced by the softener 15, and the softener 15 is also connected with a salt tank for containing salt substances. The raw water passing through the softener 15 is pumped into the cartridge filter 2 through the booster pump 17, then is pumped into the primary reverse osmosis device 4 through the primary high-pressure pump 2, and is desalted by the reverse osmosis membrane 412 in the reverse osmosis element 411 to obtain primary pure water, and the primary pure water is pumped into the secondary reverse osmosis device 7 through the intermediate water tank 5 and the secondary high-pressure pump 6 to be desalted for the second time, so that secondary pure water is obtained. In the first-stage reverse osmosis device 4 and the second-stage reverse osmosis device 7, the concentrated solution passes through the concentrated solution recovery pipeline and can pass through the high-pressure pump 3 again, and enters the first-stage reverse osmosis device 4 again for desalting again.
If the raw water is treated water, the raw water can be directly pumped into the security filter tower 2 through the booster pump 17.
The operation parameters of the first-stage reverse osmosis device 4 and the second-stage reverse osmosis device 7 are as follows:
(1) design temperature: 25 ℃;
(2) designing water yield: 300m3/d；
(3) Reverse osmosis recovery rate: more than or equal to 90 percent;
(4) reverse osmosis desalination rate is 90% -99%;
(5) and (3) cleaning cycle of the component: 3-6 months per time.
(6) And (3) equipment power control:
| device name | Total power (KW) | Rated voltage (V) | Phase sequence of equipment |
| Reverse osmosis high- |
15 | 380 | Three phases |
| Reverse osmosis filter water-feeding pump | 3 | 380 | Three phases |
| Cleaning pump | 1.8 | 380 | Three phases |
The utility model discloses high-pressure vessel 41 in well one-level reverse osmosis unit 4 and second grade reverse osmosis unit 7, through setting for six reverse osmosis membrane elements 411, reverse osmosis membrane 412, collecting piping 414, resistance piping 413, adopt the less resistance piping 413 of aperture ratio can make the volume of the water of permeating that collects collecting piping 414 reduce, can reduce the volume of the reverse osmosis that is permeated through the supply water side by the treated water, through the volume of the water of permeating that reduces the supply water side, and then increase the treated water volume of concentrated water side, reduce salt concentration, finally can increase the flow of the water of permeating of final level. Through increasing the holistic volume of permeating water of device, can make reverse osmosis membrane element's the volume of permeating water more even, realize increasing the flow of permeating water with the low pressure on the whole, and then reduce cost.
The second-stage pure water treated by the second-stage reverse osmosis device 7 can also pass through a pure water tank 8, is pumped into an ultraviolet sterilizer 10 through a transmission pump 9, is treated by the ultraviolet sterilizer 10, and is filtered by a precision filter 18 to finally obtain recycled domestic water.
The utility model discloses be provided with reverse osmosis filter intake pump, reverse osmosis high-pressure pump and manometer, the raw water passes through reverse osmosis filter intake pump and reverse osmosis high-pressure pump and relevant filtration membrane technology and handles, realizes the circulation retrieval and utilization. The pressure gauge realizes the feedback control of the water inlet pump and the high-pressure pump through the pressure detection of the pipeline.
The utility model discloses a through most advanced, most effective, the most energy-conserving membrane separation technique, mainly get rid of aquatic dissolved salts, get rid of some organic macromolecules etc. simultaneously. The cross-flow filtration of the membrane is used for preparing pure water, so that the treated feed liquid flows across the membrane surface at a certain speed, the permeate liquid permeates the membrane from the vertical direction, and meanwhile, most of the intercepted substances are carried out of the membrane module by the concentrated solution. The cross flow filtration mode reduces the thickness of a membrane surface concentration polarization layer, and can effectively reduce membrane pollution; so as to achieve solute (salt) dissolved in water, and the separation of the solvent and the solute is realized through the semipermeable membrane, thus obtaining pure water. So that residual components such as surfactant in the water body can be removed, and the water body is softened. The reverse osmosis membrane is a process for preparing pure water by adopting cross-flow filtration, the treated feed liquid flows across the membrane surface at a certain speed, the permeate liquid permeates the membrane from the vertical direction, meanwhile, most of the retentate is carried out of the membrane component by the concentrated solution, and the cross-flow filtration mode reduces the thickness of a polarization layer of the membrane surface concentration and can effectively reduce membrane pollution.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A reverse osmosis device comprises a reverse osmosis device and is characterized in that the reverse osmosis device is provided with a plurality of high-pressure containers, and a plurality of reverse osmosis membrane elements are arranged in the high-pressure containers;
the reverse osmosis membrane element comprises a water inlet separation net, a reverse osmosis membrane and a pure water diversion cloth, wherein the water inlet separation net, the reverse osmosis membrane and the pure water diversion cloth are provided with a plurality of layers;
a water collecting pipe is further arranged in the high-pressure container, the reverse osmosis membrane elements are bonded on the water collecting pipe, the reverse osmosis membrane elements are connected in series through the water collecting pipe, and the reverse osmosis membrane is an anti-pollution membrane;
the membrane end cap is arranged on one side, close to the water inlet section, of the water collecting distribution pipe, the membrane end cap seat is arranged at the water inlet end of the high-pressure container, the membrane end cap comprises a screw portion, the screw portion is in threaded connection with the membrane end cap seat, an adjusting nut is sleeved on the screw portion, and the membrane end cap is provided with a sealing ring.
2. The reverse osmosis device according to claim 1, wherein the reverse osmosis device is provided with a water inlet and a water outlet on two sides respectively, and the water outlets are two water outlets for pure water and concentrated solution respectively;
the water collecting pipe is connected with the pure water outlet, the pure water outlet is connected with a pure water outlet pipeline, and the water inlet is connected with a water inlet pipeline; the concentrated solution outlet is connected with a concentrated solution outlet main pipeline and is branched into a concentrated solution recovery pipeline and a concentrated solution discharge pipeline.
3. The reverse osmosis device of claim 2, wherein the water inlet pipeline is provided with a water inlet flow meter and a pressure gauge, the pure water outlet pipeline is provided with a water outlet flow meter and a conductivity meter, and the concentrated solution recovery pipeline and the concentrated solution discharge pipeline are provided with a flow stabilizing valve and a flow meter.
4. A reverse osmosis apparatus according to claim 2, wherein the water collecting pipe is further provided with a resistance pipe which is provided in the water collecting pipe on a side close to the water inlet; the opening rate of the opening on the side surface of the resistance pipe is smaller than the opening rate of a through hole provided on the side surface of the water collection pipe through which permeate water that permeates the reverse osmosis membrane flows.
5. The apparatus of claim 1 wherein the high pressure vessel is provided with a sample valve and a sample tube, the sample valve is of CPVC material and the sample tube is a PE hose.
6. The apparatus of claim 1, wherein the reverse osmosis unit further comprises a programmed start/stop device and a rack, and the high pressure vessel and the programmed start/stop device are mounted on the rack.
7. The reverse osmosis device of claim 1, wherein more than two reverse osmosis devices are arranged in series, and a valve, an intermediate water tank, a high-pressure pump and a pressure gauge are sequentially arranged between the reverse osmosis devices.
8. The apparatus of claim 1 further comprising a pre-treatment unit, a booster pump, a cartridge filter, a high pressure pump, and a cleaning system, wherein the pre-treatment unit is connected to the booster pump, the cartridge filter, the high pressure pump, the reverse osmosis unit, and the cleaning system in sequence via pipes.
9. The reverse osmosis device of claim 8, wherein the pretreatment device comprises a raw water tank, a raw water pump, a medium filter, an activated carbon filter, a salt tank and a softener, the raw water tank is sequentially connected with the raw water pump, the medium filter, the activated carbon filter and the softener through pipelines, the softener is connected with the booster pump through a pipeline, and the salt tank is connected with the softener through a pipeline.
10. The apparatus of claim 1 further comprising a purified water tank, a transfer pump, an ultraviolet sterilizer and a precision filter, wherein the reverse osmosis apparatus is connected to the purified water tank, the transfer pump, the ultraviolet sterilizer and the precision filter in sequence via pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021697995.9U CN212999357U (en) | 2020-08-14 | 2020-08-14 | Reverse osmosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021697995.9U CN212999357U (en) | 2020-08-14 | 2020-08-14 | Reverse osmosis device |
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| Publication Number | Publication Date |
|---|---|
| CN212999357U true CN212999357U (en) | 2021-04-20 |
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| CN202021697995.9U Active CN212999357U (en) | 2020-08-14 | 2020-08-14 | Reverse osmosis device |
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