CN115557616A - Circulating water desalination device - Google Patents
Circulating water desalination device Download PDFInfo
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- CN115557616A CN115557616A CN202211158567.2A CN202211158567A CN115557616A CN 115557616 A CN115557616 A CN 115557616A CN 202211158567 A CN202211158567 A CN 202211158567A CN 115557616 A CN115557616 A CN 115557616A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000010612 desalination reaction Methods 0.000 title claims description 8
- 238000011001 backwashing Methods 0.000 claims abstract description 19
- 238000011033 desalting Methods 0.000 claims abstract description 15
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 11
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 10
- 150000002500 ions Chemical class 0.000 claims abstract description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011575 calcium Substances 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 9
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
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- 238000009825 accumulation Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 239000000498 cooling water Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 11
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000982035 Sparattosyce Species 0.000 description 1
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- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a desalting device capable of automatically controlling and effectively reducing hardness and turbidity of industrial circulating water, in particular to a circulating water desalting device. The device comprises a pipeline (1) connected with a circulating water tank (6), wherein the pipeline (1) is connected with a desalter (3), and an extending pipeline of the desalter (3) is connected with a multi-medium reactor (5); the device also comprises a control part (10), wherein the control part (10) is a PLC control cabinet; a centrifugal pump (2) is arranged on the pipeline; circulating water enters a desalter through a centrifugal pump pressure pump, the desalter removes most calcium and magnesium ions in the circulating water by adopting an electrode physical descaling mode, balances the alkalinity and hardness index of the circulating water, then enters a multi-medium reactor, effectively intercepts scale particles in the effluent of the desalter, and induces and crystallizes the scale forming ions in the effluent so as to reduce the hardness and turbidity of the circulating water, and the equipment adopts PLC full-automatic control, so that automatic descaling and automatic backwashing after desalting can be realized.
Description
Technical Field
The invention relates to a desalting device capable of automatically controlling and effectively reducing hardness and turbidity of industrial circulating water, in particular to a circulating water desalting device.
Background
The circulating cooling water is one of the essential cooling media in petroleum, chemical, metallurgical and large-scale air conditioning systems, is mainly used for heat exchange and temperature reduction, dust removal and spray cooling of products, has huge water consumption, and relevant data statistics, and in industrial enterprises with large demand for the circulating cooling water, such as petroleum, electric power, metallurgy and the like, the water consumption accounts for 60-80 percent of the total industrial water consumption, even reaches 85 percent of the water consumption of the cooling water in certain enterprises. The circulating cooling water is closely related to the normal operation of industrial production and building air conditioning systems, and the stability and the good quality of the circulating cooling water are ensured.
Due to the evaporation effect during heat exchange, the hardness of the circulating cooling water is generally higher, which is one of the main factors influencing the normal operation of the circulating cooling water system. In industrial production, too high hardness causes calcium and magnesium ions in water to combine with carbonate and hydroxyl, and scale is formed on the surface of a heat exchanger, so that the problems of low heat exchange efficiency, high energy consumption, short service life of equipment and the like are caused. For a long time, a chemical agent method is widely applied as a water quality stability control technology of a traditional industrial circulating cooling water system, and obtains good effect to a certain extent, but simultaneously, the problems that the concentration multiple cannot be infinitely increased, the system pollution discharge and the emptying water still need to be treated, the selection and use of the agent are limited, the operation, maintenance and management requirements are high and the like are exposed, and the construction requirements of a resource-saving society cannot be well adapted; and technologies such as lime adding, reverse osmosis, ultrasonic wave, magnetization and the like are difficult to popularize and apply due to capital investment, operation cost and the like. Therefore, the treatment process with high efficiency, environmental protection and low energy consumption has become a hotspot of water treatment research.
Hazards of scale formation in recirculating cooling water systems: in actual production and life, a circulating cooling water system is mainly an open type circulating cooling water system. In process run control, concentration factors are typically used to control the salinity of the water. The concentration multiple of the cooling water in the operation process is basically not lower than 5, even the concentration multiple of the cooling water of some enterprises can reach more than 20, and the too high concentration multiple can increase the hardness and the turbidity of the circulating water, so that a circulating cooling water system is easy to scale.
The circulating cooling water contains a large amount of compounds such as bicarbonate, carbonate and chloride, and a large amount of calcium and magnesium ions. Because bicarbonate ions in water are unstable, the bicarbonate ions are heated and decomposed when flowing through the heat exchange equipment and combined with calcium ions to form calcium carbonate scale. In the heat exchange process, along with the evaporation of water, a compound which is not easy to dissolve in water is precipitated in a crystal form to become another component of the scale. The scale is easy to form in heat transfer equipment such as heat exchangers, cooling towers, pipelines and the like, is hard in texture and difficult to remove, and is also called as hard scale. Common scales are calcium sulfate, calcium carbonate, magnesium hydroxide, calcium silicate, barium sulfate, silica, etc., with calcium carbonate being the most common form of scale.
The heat resistance of the scale in the heat exchanger is large and is a poor heat conductor, the heat conductivity coefficient of the heat exchanger is only one tenth of that of common carbon steel, and after the scale appears on the pipe wall of the heat exchange equipment, the heat transfer resistance between water and a heat exchange surface can be increased, thereby seriously affecting the heat transfer efficiency of the heat exchanger, reducing the production efficiency and even causing safety accidents such as explosion and the like. In an air conditioning system, the thickness of water scale is increased by 0.1mm, the refrigeration coefficient of a water chilling unit can be reduced by 3.2%, and the refrigeration effect of an air conditioner is influenced. The scale formation of the circulating cooling water system can cause a great deal of energy waste. Because of the reduction of heat exchange efficiency, in order to guarantee the cooling effect, often will solve through the mode that increases energy consumption. The relationship between scale thickness and energy consumption as determined by the U.S. bureau of standards shows: the energy loss can be increased by 20% when the thickness of the water scale reaches 3 mm; when the thickness of the scale reaches 9mm, the heat energy consumption is increased by 60%. As the thickness of the scale increases, the consumption of electric power also increases rapidly.
The scale formation increases the water flow resistance of the recirculating cooling water system. In the cooling water delivery pipe, the scale produced reduces the cross-sectional area of the pipe, thereby reducing the flow rate of the cooling water, hindering normal heat exchange, even blocking the passage of the cooling water, resulting in a reduction in cooling effect, increasing operating and maintenance costs, causing expensive component replacement, and causing temporary reduction in equipment stability and reliability, affecting the performance of industrial production.
The scale not only affects the cooling water effect of the system, but also causes the under-scale corrosion of the system. The under-deposit corrosion causes the perforation leakage of the cooling water pipeline, the service life of equipment and the pipeline is influenced, the maintenance and management cost is increased, and even the serious corrosion can cause the equipment to break down or damage, thereby causing huge economic loss. The sudden local under-scale corrosion can cause the cracking of pipelines, and the leakage of a large amount of cooling water can cause serious environmental pollution, thus easily causing safety accidents and threatening lives and properties.
Therefore, the scale formation of the circulating cooling water system can cause a series of problems, the safety operation of industrial production is threatened, the production efficiency is reduced, the economic loss is caused, and the scale prevention and removal are the primary tasks of the circulating cooling water treatment.
Disclosure of Invention
The purpose of the invention is as follows: in order to provide a more effective device for desalinating circulating water, the specific purpose is to see a plurality of substantial technical effects of the specific implementation part.
In order to achieve the purpose, the invention adopts the following technical scheme:
the circulating water desalting device is characterized by comprising a pipeline 1 connected with a circulating water pool 6, wherein the pipeline 1 is connected with a desalter 3, and the desalter 3 extends out of a pipeline and is connected with a multi-medium reactor 5; the device also comprises a control part 10, wherein the control part 10 is a PLC control cabinet; a centrifugal pump 2 is arranged on the pipeline;
circulating water enters the desalter through a centrifugal pump pressure pump, most calcium and magnesium ions in the circulating water are removed by the desalter in an electrode physical descaling mode, the alkalinity and hardness index of the circulating water are balanced, the circulating water enters the multi-media reactor, scale particles in the desalter effluent are effectively intercepted, and scale forming ions in the circulating water are induced to crystallize, so that the hardness and turbidity of the circulating water are reduced, and the equipment adopts PLC (programmable logic controller) full-automatic control, so that automatic descaling and automatic backwashing after desalting can be realized.
The invention further has the technical scheme that two centrifugal pumps are arranged, one centrifugal pump is started during operation, and the other centrifugal pump is standby; i.e. the centrifugal pumps and their associated pipes are arranged in parallel.
The invention further adopts the technical scheme that a pipeline 1 is connected with each part through flanges to form a circulation channel, a centrifugal pump 2 is used for pumping and conveying circulating water, when a desalter 3 is electrified, bicarbonate in the circulating water migrates to the surface of a cathode and is converted into carbonate with hydroxyl, calcium ions and magnesium ions migrate to the surface of the cathode under the combined action of mass transfer and an electric field, calcium carbonate or magnesium hydroxide precipitate is generated in the cathode area and finally deposited on the inner surface of the shell in the form of scale, the scale on the surface of the shell is automatically removed by a scale scraping system at regular intervals, and when the system is in a normal running state, the circulating water passing through the desalter passes through a water distributor at the upper part and is matched with a spherical shell to reach a multi-medium packing layer arranged inside the desalter in a nearly advective state; when water flows through the packing layer, scale particles are effectively intercepted, and scale forming ions in the scale particles are induced to crystallize, so that the hardness and turbidity of circulating water are reduced, the treated water is uniformly collected and flows out by the collector at the bottom, along with continuous accumulation of impurities in the packing layer, when the set time is reached to a set value, the system is automatically switched to a backwashing state to clean the packing layer and remove the impurities.
The invention further adopts the technical scheme that when the system enters a backwashing state, the on-off position is changed by the control system; closing an inlet of the multi-medium reactor 5, opening a drain outlet of the multi-medium reactor 5, and starting backwashing; because of the water pressure of the system, the filter tank is in a backwashing state, and the impurities accumulated on the packing layer are discharged from the sewage outlet after being washed by backwashing water flow.
The invention further adopts the technical scheme that the circulating water desalting device is integrally arranged on the base.
Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: the water quality of the circulating water can be guaranteed, the system balance is maintained, scaling substances and algae are removed from the circulating water, the water quality of the whole circulating water system is guaranteed to be stable, the situation that scale and algae block a pipeline is prevented from occurring, meanwhile, the running cost is saved, and the pipeline fault of heat exchange equipment is reduced.
The circulating water desalination technology is used as a novel water treatment technology of an industrial circulating cooling water system, and can effectively reduce the hardness and turbidity of circulating water; compared with the traditional water treatment technology, the system has the advantages of simple and convenient operation and maintenance, long service life of the equipment up to more than 10 years, low energy consumption, capability of realizing the purpose of desalting by applying lower voltage, no need of adding chemicals, no secondary pollution, no pollutant generation of the system, scale resistance, automatic control of the system, no need of guard and high automation degree.
Drawings
To further illustrate the present invention, further description is provided below with reference to the accompanying drawings:
FIG. 1 is a flow diagram of an inventive circulating water desalination apparatus;
FIG. 2 is a side schematic view of the invention;
FIG. 3 is a perspective view of the invention;
FIG. 4 is a top view of the overall structure of the invention;
FIG. 5 is a block diagram of a desalter;
FIG. 6 is a schematic of a side of a multi-media reactor;
FIG. 7 is a schematic view of another side of a multi-media reactor;
wherein: 1. a pipeline; 2. a centrifugal pump; 3. a desalter; 4. an electrically controlled valve; 5. a multi-media reactor; 6. a circulating water tank; 7. a circulating water tank interface; 8. a base; 9. an electrically controlled valve; 10. and a control section.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and detailed description, which will be understood as being illustrative only and not limiting in scope. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The fixing means, which is not described herein, may be any one of screw fixing, bolt fixing, or glue bonding.
The first embodiment is as follows: with reference to all of the accompanying drawings; the device for desalting the circulating water is characterized by comprising a pipeline 1 connected with a circulating water pool 6, wherein the pipeline 1 is connected with a desalter 3, and the desalter 3 extends out of a pipeline and is connected with a multi-medium reactor 5; the device also comprises a control part 10, wherein the control part 10 is a PLC control cabinet; a centrifugal pump 2 is arranged on the pipeline;
circulating water enters the desalter through a centrifugal pump pressure pump, most calcium and magnesium ions in the circulating water are removed by the desalter in an electrode physical descaling mode, the alkalinity and hardness index of the circulating water are balanced, the circulating water enters the multi-media reactor, scale particles in the desalter effluent are effectively intercepted, and scale forming ions in the circulating water are induced to crystallize, so that the hardness and turbidity of the circulating water are reduced, and the equipment adopts PLC (programmable logic controller) full-automatic control, so that automatic descaling and automatic backwashing after desalting can be realized. The technical scheme of the invention has the following substantial technical effects and the realization process, namely the basic functions: the circulating water desalting device comprises a desalter, a multi-medium reactor, a centrifugal pump, a PLC (programmable logic controller), a base, an electric control pipeline and the like. Circulating water enters a desalter through a centrifugal pump pressure pump, the desalter removes most calcium and magnesium ions in the circulating water by adopting an electrode physical descaling mode, balances the alkalinity and hardness index of the circulating water, then enters a multi-medium reactor, effectively intercepts scale particles in the effluent of the desalter, and induces and crystallizes the scale forming ions in the effluent so as to reduce the hardness and turbidity of the circulating water, and the equipment adopts PLC full-automatic control, so that automatic descaling and automatic backwashing after desalting can be realized.
Example two: as a further improved scheme or a parallel scheme or an optional independent scheme, the centrifugal pump is provided with two sets, one set is started during operation, and the other set is standby; i.e. the centrifugal pumps and their associated pipes are arranged in parallel. The technical scheme of the invention has the following substantial technical effects and the realization process, namely the basic functions: the centrifugal pump is provided with two sets, one set is opened during operation, and the other set is standby. Therefore, even if one is broken, the other is not affected. The centrifugal pump is preferably a bidirectional conveying centrifugal pump.
Example three: as a further improvement scheme or a parallel scheme or an optional independent scheme, a pipeline 1 is connected with all parts through flanges to form a flow channel, a centrifugal pump 2 is used for pumping and conveying circulating water, when a desalter 3 is electrified, bicarbonate in the circulating water migrates to the surface of a cathode and is converted into carbonate with hydroxyl, calcium ions and magnesium ions migrate to the surface of the cathode under the combined action of mass transfer and an electric field, calcium carbonate or magnesium hydroxide precipitates are generated in the cathode region and are finally deposited on the inner surface of a shell in the form of scale, the scale on the surface of the shell is automatically removed by a scale scraping system periodically, and when the system is in a normal operation state, the circulating water passing through the desalter passes through a water distributor at the upper part and is matched with a spherical shell to reach a multi-medium packing layer distributed in the inner part in a nearly advection state; when rivers flow through the packing layer, the incrustation scale particle is effectively intercepted to thereby reduce circulating water hardness and turbidity to the induced crystallization of the incrustation scale ion wherein, the collector of bottom is collected the water after handling uniformly and is flowed out, along with impurity constantly gathers at the packing layer, when reaching the settlement value of settlement time, the system will automatic switch to the backwash state, in order to wash the packing layer and clear away impurity.
Example four: as a further improvement or a parallel scheme or an optional independent scheme, when the system enters a backwashing state, the on-off position is changed by the control system; the inlet of the multi-medium reactor 5 is closed, the drain outlet of the multi-medium reactor 5 is opened, and backwashing is started; because of the water pressure of the system, the filter tank is in a backwashing state, and the impurities accumulated on the packing layer are discharged from the sewage outlet after being washed by backwashing water flow.
Example five: as a further development or in a parallel or optionally independent solution, the circulating water desalination device is arranged integrally on the base.
Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.
It should be noted that the modules of this patent belong to the integration of the modules of the prior art, and do not relate to new modules. Even if part of the modules is used in a program, the program is of course a known program.
It should be noted that the plurality of schemes provided in this patent include their own basic schemes, which are independent of each other and are not restricted to each other, but they may be combined with each other without conflict, so as to achieve a plurality of effects.
The electrical components in the document are all electrically connected with an external main controller and 220V mains supply, and the main controller can be a conventional known device controlled by a computer and the like.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (5)
1. The circulating water desalting device is characterized by comprising a pipeline (1) connected with a circulating water pool (6), wherein the pipeline (1) is connected with a desalter (3), and an extending pipeline of the desalter (3) is connected with a multi-medium reactor (5); the device also comprises a control part (10), wherein the control part (10) is a PLC control cabinet; a centrifugal pump (2) is arranged on the pipeline;
circulating water enters a desalter through a centrifugal pump pressure pump, the desalter removes most calcium and magnesium ions in the circulating water by adopting an electrode physical descaling mode, balances the alkalinity and hardness index of the circulating water, then enters a multi-medium reactor, effectively intercepts scale particles in the effluent of the desalter, and induces and crystallizes the scale forming ions in the effluent so as to reduce the hardness and turbidity of the circulating water, and the equipment adopts PLC full-automatic control, so that automatic descaling and automatic backwashing after desalting can be realized.
2. The apparatus for desalinating circulating water according to claim 1, wherein the centrifugal pumps are provided in two sets, one set being on and one set being ready for use in operation; i.e. the centrifugal pumps and their associated pipes are arranged in parallel.
3. The circulating water desalination device of claim 1, wherein the pipeline (1) is connected with each component through flanges to form a flow channel, the centrifugal pump (2) is used for pumping and conveying circulating water, when the desalination device (3) is electrified, bicarbonate in the circulating water migrates to the surface of a cathode and is converted into carbonate with hydroxide, calcium ions and magnesium ions migrate to the surface of the cathode under the combined action of mass transfer and an electric field, calcium carbonate or magnesium hydroxide precipitates are generated in the cathode area and finally deposited on the inner surface of the shell in the form of scale, the scale on the surface of the shell is automatically removed by a scale scraping system periodically, and when the system is in a normal operation state, the circulating water passing through the desalination device passes through a water distributor at the upper part and is matched with a spherical shell to reach a multi-medium packing layer arranged in the inner cloth in a nearly advection state; when water flows through the packing layer, scale particles are effectively intercepted, and scale forming ions in the scale particles are induced to crystallize, so that the hardness and turbidity of circulating water are reduced, the treated water is uniformly collected and flows out by the collector at the bottom, along with continuous accumulation of impurities in the packing layer, when the set time is reached to a set value, the system is automatically switched to a backwashing state to clean the packing layer and remove the impurities.
4. The apparatus for desalinating circulating water according to claim 3, wherein the on-off position is changed by the control system when the system enters a backwashing state; the inlet of the multi-medium reactor (5) is closed, the drain outlet of the multi-medium reactor (5) is opened, and backwashing is started; because of the water pressure of the system, the filter tank is in a backwashing state, and the impurities accumulated on the packing layer are discharged from the sewage outlet after being washed by backwashing water flow.
5. The apparatus for desalinating circulating water according to claim 1, wherein the apparatus for desalinating circulating water is integrally disposed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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