CN220078721U - Device for guaranteeing pH value of effluent of reverse osmosis system - Google Patents
Device for guaranteeing pH value of effluent of reverse osmosis system Download PDFInfo
- Publication number
- CN220078721U CN220078721U CN202321323780.4U CN202321323780U CN220078721U CN 220078721 U CN220078721 U CN 220078721U CN 202321323780 U CN202321323780 U CN 202321323780U CN 220078721 U CN220078721 U CN 220078721U
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- China
- Prior art keywords
- reverse osmosis
- water
- stage reverse
- value
- effluent
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 100
- 229910001868 water Inorganic materials 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 238000007667 floating Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 22
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 11
- 239000001569 carbon dioxide Substances 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 7
- 239000003513 alkali Substances 0.000 abstract description 6
- 238000004090 dissolution Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 7
- 230000003204 osmotic effect Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- -1 i.e. Substances 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a device for guaranteeing the pH value of effluent of a reverse osmosis system, which comprises a first-stage reverse osmosis membrane group, a first-stage reverse osmosis water producing pool, a second-stage reverse osmosis membrane group and a second-stage reverse osmosis water producing pool, wherein a chemical adding pipe is arranged on a water inlet pipe of the second-stage reverse osmosis membrane group, a floating ball is fully covered on the liquid surface of the second-stage reverse osmosis water producing pool, and filter screens are arranged on the inner sides of overflow pipes of the second-stage reverse osmosis water producing pool and pool wall pipe orifices of an outer water supply pipe. The utility model realizes that the pH value of reverse osmosis effluent is qualified; the medicament is reasonably used, the dosage of a medicament system is not wasted, and the neutralization is not needed by adding new alkali medicaments; the floating ball is fully covered on the liquid surface of the secondary reverse osmosis water producing pool, the contact surface of air and water is reduced, the dissolution of carbon dioxide in the air in the water is reduced, and the pH of the secondary reverse osmosis water producing pool is improved; and relatively little impurity is doped in the water.
Description
Technical Field
The utility model relates to water treatment, in particular to a device for guaranteeing the pH value of effluent of a reverse osmosis system.
Background
Reverse osmosis, also known as reverse osmosis, is a membrane separation operation that separates solvent from solution using pressure differential as the driving force. The feed liquid on one side of the membrane is pressurized and when the pressure exceeds its osmotic pressure, the solvent will reverse permeate against the natural direction of permeation. Thereby obtaining a permeate solvent, i.e., permeate, on the low pressure side of the membrane; the high pressure side gives a concentrated solution, i.e. a concentrate. If the seawater is treated by reverse osmosis, fresh water is obtained on the low pressure side of the membrane and brine is obtained on the high pressure side.
Because it is opposite to natural osmosis, it is called reverse osmosis. According to different osmotic pressures of various materials, reverse osmosis pressure which is higher than osmotic pressure, namely reverse osmosis method can be used to achieve the purposes of separation, extraction, purification and concentration.
Compared with other traditional separation engineering, the reverse osmosis separation process has the unique advantages that: (1) The pressure is the main power of the reverse osmosis separation process, the phase change of energy intensive exchange is not performed, and the energy consumption is low; (2) The reverse osmosis does not need a large amount of precipitants and adsorbents, and the operation cost is low; (3) The reverse osmosis separation engineering design and operation are simple, and the construction period is short; and (4) the reverse osmosis purification efficiency is high, and the environment is friendly. Therefore, the reverse osmosis technology has been widely used in domestic and industrial water treatment such as desalination of sea water and brackish water, production of medical and industrial water, preparation of pure water and ultrapure water, industrial wastewater treatment, food processing concentration, gas separation, and the like.
In the reverse osmosis desalination process, although the total removal rate of the reverse osmosis membrane is as high as 98% or more (ammonia nitrogen is lower) for dissolved salts in water, the transmittance of the reverse osmosis membrane for dissolved gases in water, such as CO2, is almost 100%, and CO2 dissolved in water is combined with H2O, so that the following reaction occurs until a new dissociation equilibrium is generated:
CO2+H2O→HCO3-+H+
HCO3-→CO32-+H+
the pH of the produced water of RO will be relatively low due to the presence of H+ in the water. Normally dissolution of carbon dioxide in air into water can result in a minimum pH drop of pure water to 5.6.
Because the higher the water quality purity is, the weaker the buffering capacity of the water is, the higher the pH value of the water is influenced by carbon dioxide in the air, and under normal conditions, the water quality of the produced water is purer due to reverse osmosis, the produced water is generally acidic, the pH value of the produced water of the second-stage reverse osmosis is normal, and the pH value of the produced water of the second-stage reverse osmosis is lower than that of the produced water of the first-stage reverse osmosis.
In order to remove the influence of carbon dioxide in water, the pH value is generally adjusted by adding a chemical to convert the carbon dioxide into carbonate and bicarbonate, and the carbonate and bicarbonate are removed by a reverse osmosis membrane to control the CO2 content in RO produced water so as to reduce the electric conductivity of the two-stage reverse osmosis produced water and reduce the reduction amplitude of the pH value. However, the pH value of the water is reduced due to the fact that carbon dioxide in the air of the secondary reverse osmosis water producing pool is dissolved into the water, so that the pH value of the water is lower than the standard. In order to increase the pH value of the water produced by the second-stage reverse osmosis, the dosage of the medicament is increased, the cost is increased, and the effect is not ideal.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a device for guaranteeing the pH value of effluent of a reverse osmosis system, and solving the problem of low pH value of water produced by secondary reverse osmosis.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a guarantee device of reverse osmosis system effluent pH value, reverse osmosis system includes that first order reverse osmosis membrane is organized, first order reverse osmosis produces pond, second grade reverse osmosis membrane is organized, second grade reverse osmosis produces the pond, is equipped with the charge pipe on the inlet tube of second grade reverse osmosis membrane group, fully covers the floater on the liquid level of second grade reverse osmosis produces the pond, all is equipped with the filter screen in the overflow pipe of second grade reverse osmosis produces the pond and the pool wall mouth of pipe inboard of outer delivery pipe.
As a further scheme of the utility model, the floating ball comprises a sphere, and the middle part of the sphere is provided with a ring body with an integrated structure.
As a further scheme of the utility model, the floating ball is a plastic floating ball.
As a further scheme of the utility model, the mesh diameter of the filter screen is less than or equal to 10 meshes.
As a further scheme of the utility model, the dosing tube is connected with an alkali liquor box.
As a further scheme of the utility model, the top of the secondary reverse osmosis water producing pool is closed, and a flip cover is arranged.
Compared with the prior art, the utility model has the beneficial effects that:
1. the pH value of reverse osmosis effluent is qualified;
2. the medicament is reasonably used, the dosage of a medicament system is not wasted, and the neutralization is not needed by adding new alkali medicaments;
3. the floating ball is fully covered on the liquid surface of the secondary reverse osmosis water producing pool, the contact surface of air and water is reduced, the dissolution of carbon dioxide in the air in the water is reduced, and the pH of the secondary reverse osmosis water producing pool is improved; and relatively less impurity is doped in the water;
4. the water quality requirement of the user is ensured.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a block diagram of a secondary reverse osmosis water producing pond.
Fig. 3 is a structural view of the floating ball.
In the figure: the device comprises a first-stage reverse osmosis membrane group 1, a first-stage reverse osmosis water producing pool 2, a second-stage reverse osmosis membrane group 3, a second-stage reverse osmosis water producing pool 4, a dosing pipe 5, a floating ball 6, an overflow pipe 7, an outer water supply pipe 8, a filter screen 9, a sphere 10, a torus 11, an alkali liquor box 12 and a flip cover 13.
Detailed Description
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Referring to fig. 1-3, a device for guaranteeing the pH value of effluent of a reverse osmosis system, the reverse osmosis system comprises a first-stage reverse osmosis membrane group 1, a first-stage reverse osmosis water producing tank 2, a second-stage reverse osmosis membrane group 3 and a second-stage reverse osmosis water producing tank 4, a dosing pipe 5 is arranged on a water inlet pipe of the second-stage reverse osmosis membrane group 3, a floating ball 6 is fully covered on the liquid level of the second-stage reverse osmosis water producing tank 4, and filter screens 9 are arranged on the inner sides of overflow pipes 7 of the second-stage reverse osmosis water producing tank 4 and tank wall pipe orifices of an external water supply pipe 8.
The floating ball 6 comprises a ball body 10, and a ring body 11 with an integrated structure is arranged in the middle of the ball body 10.
The floating ball 6 is a plastic floating ball.
The mesh diameter of the filter screen 9 is less than or equal to 10 meshes.
The dosing pipe 5 is connected with an alkali liquor box 12.
The top of the secondary reverse osmosis water producing pool 4 is closed, and a flip cover 13 is arranged.
In order to make the purposes, technical schemes and technical effects of the utility model clearer, the technical schemes in the embodiments of the utility model are clearly and completely described. The embodiments described below are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without the benefit of the teachings of this utility model, are intended to be within the scope of the utility model.
Example 1
The utility model provides a guarantee device of reverse osmosis system effluent pH value, reverse osmosis system includes that first order reverse osmosis membrane group 1, first order reverse osmosis produce pond 2, second grade reverse osmosis membrane group 3, second grade reverse osmosis produce pond 4, is equipped with on the inlet tube of second grade reverse osmosis membrane group 3 and adds pencil 5, fully covers floater 6 on the liquid level of second grade reverse osmosis produce pond 4, all is equipped with filter screen 9 in the pool wall mouth of pipe inboard of overflow pipe 7 and outer delivery pipe 8 of second grade reverse osmosis produce pond 4.
The floating ball 6 comprises a ball body 10, and a ring body 11 with an integrated structure is arranged in the middle of the ball body 10. The sphere 10 has a diameter of 3.5mm and the torus 11 has an outer diameter of 6mm.
The floating ball 6 is a plastic floating ball. The filter screen 9 is made of stainless steel, and the mesh diameter of the filter screen 9 is 10 meshes.
Example 2
The utility model provides a guarantee device of reverse osmosis system effluent pH value, reverse osmosis system includes that first order reverse osmosis membrane group 1, first order reverse osmosis produce pond 2, second grade reverse osmosis membrane group 3, second grade reverse osmosis produce pond 4, is equipped with on the inlet tube of second grade reverse osmosis membrane group 3 and adds pencil 5, fully covers floater 6 on the liquid level of second grade reverse osmosis produce pond 4, all is equipped with filter screen 9 in the pool wall mouth of pipe inboard of overflow pipe 7 and outer delivery pipe 8 of second grade reverse osmosis produce pond 4.
The floating ball 6 comprises a ball body 10, and a ring body 11 with an integrated structure is arranged in the middle of the ball body 10. The sphere 10 has a diameter of 3mm and the torus 11 has an outer diameter of 5mm.
The floating ball 6 is a plastic floating ball. The filter screen 9 is made of stainless steel, and the mesh diameter of the filter screen 9 is 12 meshes.
The dosing tube 5 is connected with an alkali liquor box 12. The top of the secondary reverse osmosis water producing tank 4 is closed, and a flip cover 13 is arranged.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The device for guaranteeing the pH value of effluent of the reverse osmosis system is characterized in that the reverse osmosis system comprises a first-stage reverse osmosis membrane group, a first-stage reverse osmosis water producing pool, a second-stage reverse osmosis membrane group and a second-stage reverse osmosis water producing pool, a chemical adding pipe is arranged on a water inlet pipe of the second-stage reverse osmosis membrane group, a floating ball is fully covered on the liquid level of the second-stage reverse osmosis water producing pool, and filter screens are arranged on the overflow pipe of the second-stage reverse osmosis water producing pool and the inner side of a pool wall pipe orifice of an outer water supply pipe.
2. The device for ensuring the pH value of effluent of a reverse osmosis system according to claim 1, wherein said floating ball comprises a sphere, and a torus with an integral structure is arranged in the middle of the sphere.
3. The apparatus of claim 1, wherein the float is a plastic float.
4. The device for ensuring the pH value of effluent of a reverse osmosis system according to claim 1, wherein the mesh diameter of the filter screen is less than or equal to 10 meshes.
5. The apparatus for ensuring the pH value of effluent from a reverse osmosis system according to claim 1, wherein said dosing tube is connected to an alkaline tank.
6. The device for ensuring the pH value of effluent of a reverse osmosis system according to claim 1, wherein the top of the secondary reverse osmosis water producing tank is closed and provided with a flip cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321323780.4U CN220078721U (en) | 2023-05-29 | 2023-05-29 | Device for guaranteeing pH value of effluent of reverse osmosis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321323780.4U CN220078721U (en) | 2023-05-29 | 2023-05-29 | Device for guaranteeing pH value of effluent of reverse osmosis system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220078721U true CN220078721U (en) | 2023-11-24 |
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ID=88830306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321323780.4U Active CN220078721U (en) | 2023-05-29 | 2023-05-29 | Device for guaranteeing pH value of effluent of reverse osmosis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220078721U (en) |
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2023
- 2023-05-29 CN CN202321323780.4U patent/CN220078721U/en active Active
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