Large-flux low-power-consumption desalting device for industrial wastewater

Abstract

The utility model discloses a high-flux low-power-consumption desalting device for industrial wastewater. The large-flux low-power-consumption desalting device comprises a compartment concentration desalter, wherein the compartment concentration desalter comprises a water purification chamber, a concentrated solution chamber and a plurality of unit electro-adsorption chambers which are all rectangular box bodies; the water purification chamber is communicated with an industrial water circulation loop through a purified water outlet in the upper end; the concentrated solution chamber is communicated with the evaporation separator through a dirty solution outlet in the lower end and is connected to the upper end of the water purification chamber; a plurality of unit electro-adsorption chambers are symmetrically distributed on the two sides of the water purification chamber and the concentrated solution chamber and are communicated through a lower through pipe and an upper through pipe, and a salt ion concentration measuring instrument is arranged at each of the upper end and the lower end of each unit electro-adsorption chamber; the electric cock switches are respectively fixed at ports, close to the unit electro-adsorption chamber, of the lower through pipe and the upper through pipe; and each unit electro-adsorption chamber performs independent ionization concentration operation. The utility model has the effects of mutually independent and stable operation, low energy consumption and large waste discharge flux.

Description

Technical Field

[0001] The utility model relates to the field of industrial wastewater desalination, and particularly to a large-throughput and low-power consumption industrial wastewater desalination device. Background Art

[0002] In recent years, with the rapid development of industry, a large amount of industrial wastewater is generated in industrial production, and sewage treatment has become an important part of environmental governance. Since industrial wastewater contains a large amount of salt, industrial wastewater desalination has become the focus. Currently, the commonly used membrane treatment method has a complex process flow, many processes, and poor operation stability. In order to maintain stable operation, low-speed operation is often adopted, and its defects are as follows: Therefore, the flux of industrial wastewater is low, the desalination efficiency is low, and the energy consumption is high. In addition, recently, an ionization desalination device with a single-chamber structure has emerged, and its defects are as follows: First, the liquid passing cross-section of the single chamber is small, resulting in a small flux. Moreover, in the single-chamber structure, when the liquid concentration of the entire cross-section is high, the flow rate needs to be controlled low, and at this time, the flux is low. The above two reasons result in high energy consumption. Second, if the single-chamber structure needs to be cleaned or maintained, the whole machine needs to stop running, resulting in low processing efficiency. Third, currently, there is interference at the inlet and outlet ports, and the port area is small, which limits the maximum flux of wastewater treatment. Summary of the Utility Model

[0003] In order to solve one or more of the above problems, the utility model provides a large-throughput and low-power consumption industrial wastewater desalination device.

[0004] According to one aspect of the utility model, the large-throughput and low-power consumption industrial wastewater desalination device includes: a compartmentalized concentration desalination device, which includes a purified water chamber, a concentrated liquid chamber, both of which are rectangular boxes, and a plurality of unit electro-adsorption chambers;

[0005] The purified water chamber is connected to the industrial water circulation loop through the purified water outlet at the upper end;

[0006] The concentrated liquid chamber is connected to the evaporation separator through the waste liquid outlet at the lower end, and the concentrated liquid chamber is connected to the upper end of the purified water chamber;

[0007] A plurality of unit electro-adsorption chambers are symmetrically distributed on both sides of the purified water chamber and the concentrated liquid chamber. Two adjacent unit adsorption chambers on each side are fixedly connected, and the lower end of each unit electro-adsorption chamber is fixedly connected to the purified water chamber and the upper end is fixedly connected to the concentrated liquid chamber. The port on the inner side wall of the lower end of each unit electro-adsorption chamber is fitted with the port on the outer wall of the purified water chamber, and the two ports are fixedly connected with a lower connecting pipe. The port on the inner side wall of the upper end of each unit electro-adsorption chamber is fitted with the port on the outer wall of the concentrated liquid chamber, and the two ports are fixedly connected with an upper connecting pipe. In each unit adsorption chamber, upper and lower opposite positive and negative electrode plates are arranged, and a raw liquid inlet is arranged on the outer side wall. A salt ion concentration measuring instrument is placed at each of the upper and lower ends of each unit electro-adsorption chamber;

[0008] The electric plug valves are respectively fixed at the ports of the lower through - pipe and the upper through - pipe close to the unit electro - adsorption chamber.

[0009] The industrial control PLC controller is electrically connected to the electric plug valves and the salt ion concentration measuring instrument; each unit electro - adsorption chamber operates independently for ionization and concentration. It forms independent purified water passages and sewage passages with the purified water chamber and the concentrated liquid chamber respectively. When the salt ion concentration in one unit electro - adsorption chamber reaches the set upper limit concentration of the salt ion concentration measuring instrument, the electric plug valve closes the lower through - pipe and opens the upper through - pipe for sewage discharge. When the sewage discharge reaches the set lower limit concentration of the salt ion concentration measuring instrument, the electric plug valve closes the upper through - pipe and opens the lower through - pipe for purified water discharge, without interfering with the concentration operations of the other unit electro - adsorption chambers.

[0010] In some embodiments, the inner ends of the purified water outlet and the waste liquid outlet are rectangular flat pipes and the outer ends are round pipes.

[0011] In some embodiments, a salt ion concentration measuring instrument is provided for each lower through - pipe and upper through - pipe.

[0012] In some embodiments, multiple chamber - type concentration and desalination devices are connected in series. The waste liquid outlet of each chamber - type concentration and desalination device is connected to the evaporation separator.

[0013] The raw liquid inlet of the first chamber - type concentration and desalination device is connected to the raw liquid pool. The raw liquid inlet of the subsequent chamber - type concentration and desalination devices is connected to the purified water outlet of the previous chamber - type concentration and desalination device. The purified water outlet of the last chamber - type concentration and desalination device is connected to the high - salt industrial wastewater generation unit of the industrial water circulation loop.

[0014] In some embodiments, from front to back, the upper limit values of the first salt ion concentration measuring instruments of each chamber - type concentration and desalination device are the same and the lower limit values gradually decrease.

[0015] In some embodiments, an adjustment tank is further provided at the front end of the raw liquid pool. The water inlet end of the adjustment tank is connected to the high - salt industrial wastewater generation unit through a pipeline.

[0016] In some embodiments, a softening and decarbonator is further provided at the front end of the evaporation separator;

[0017] Or a gravity - flow multi - medium filter is provided between the raw liquid pool and the adjustment tank.

[0018] In some embodiments, two adjacent unit electro - adsorption chambers on each side are detachably connected by threaded parts. The unit electro - adsorption chamber is detachably connected to the purified water chamber and the concentrated liquid chamber by threaded parts. The lower through - pipe is welded to the outer wall of the purified water chamber and the other end is press - fitted and sleeved on the hole wall of the unit electro - adsorption chamber. The upper through - pipe is integrally welded to the outer wall of the concentrated liquid chamber and the other end is press - fitted and sleeved on the hole wall of the unit electro - adsorption chamber.

[0019] In some embodiments, the outer end shaft sleeve of the lower or upper through pipe is located in the positioning flange, and the positioning flange is fixedly connected to the pore wall of the unit electro-adsorption chamber.

[0020] In some embodiments, an inner sealing ring is provided between the inner hole of the positioning flange and the lower or upper through pipe, an adhesive connection layer is coated on the inner chamfer of the positioning flange and the pore wall of the unit electro-adsorption chamber, and an adhesive connection layer is coated on the end heads of the positioning flange and the lower or upper through pipe.

[0021] The beneficial effects of the industrial wastewater large-flux and low-power desalination device are as follows: First, several sub-chamber concentration desalination devices are symmetrically arranged on both sides of the purified water chamber and the concentrated liquid chamber, and their liquid passing areas are greatly increased. Therefore, the waste discharge flux is relatively large. At the same time, the concentrated liquid chamber and the purified water chamber are arranged up and down and located in the middle, which can make the concentrated liquid and the purified water concentrated in two independent chambers without interference, and can make the outlet area larger, greatly improving the liquid passing flux, increasing the maximum flow rate, further improving the flux, treating more wastewater under the same power, and significantly reducing the unit power consumption, thus forming a large-flux and low-power waste removal structure. Second, several sub-chamber concentration desalination devices operate independently at the same time, and their concentration and waste discharge processes are independent of each other. Each sub-chamber concentration desalination device can operate efficiently. At the same time, when a sub-chamber concentration desalination device reaches the set concentration, only this sub-chamber concentration desalination device needs to be switched for waste discharge, which will not affect the operation of other sub-chamber concentration desalination devices. Therefore, the multi-chamber and multi-passage structure enables a large overall throughput and low overall energy consumption. Third, each unit electro-adsorption chamber can be replaced independently without affecting the operation of other sub-chambers, with low replacement cost and higher equipment utilization rate. Fourth, a set salt ion concentration measuring instrument and an electric plug cock switch are provided, which can monitor the liquid concentration at any time, switch the corresponding passage, increase the liquid inlet speed, increase the liquid flow flux, and reduce the energy consumption. Fifth, the purified water of this device directly returns to the industrial water circulation for reuse, which can save industrial water consumption, while the highly concentrated liquid is subjected to evaporation separation to form industrial salt, effectively turning waste into useful items and realizing sustainable development and green development. Sixth, compared with the membrane treatment method, this structure has the advantages of simple process flow, fewer processes, high stability, low energy consumption, and large throughput. Compared with the single-chamber structure, it also realizes the advantages of high stability, low energy consumption, and large throughput. Description of the Drawings

[0022] Figure 1 Schematic diagram (1) of the industrial wastewater large-flux and low-power desalination device according to Embodiment 1 of the present utility model;

[0023] Figure 2 is Figure 1 Schematic diagram (2) of the industrial wastewater large-flux and low-power desalination device shown;

[0024] Figure 3 is Figure 1 Front view schematic diagram of the sub-chamber concentration desalination device shown;

[0025] Figure 4 For Figure 3 The sectional view schematic diagram (1) of the compartmentalized concentration desalination device shown;

[0026] Figure 5 For Figure 2 The left view schematic diagram of the compartmentalized concentration desalination device shown;

[0027] Figure 6 For Figure 5 The sectional view schematic diagram (2) of the compartmentalized concentration desalination device shown;

[0028] Figure 7 For Figure 6 The partial enlarged schematic diagram of the compartmentalized concentration desalination device shown;

[0029] Figure 8 For Figure 1 The schematic diagram of adding an adjustment tank, a softening decarbonator, and a gravity flow multi-media filter to the industrial wastewater large-flux and low-power consumption desalination device shown;

[0030] Figure 9 For Figure 1 The schematic diagram of the industrial wastewater large-flux and low-power consumption desalination device shown using multiple compartmentalized concentration desalination devices connected in series;

[0031] Compartmentalized concentration desalination device 00, DC power supply 001, purified water chamber 1, purified water outlet 10, lower connecting pipe 11, concentrated liquid chamber 2, waste liquid outlet 20, upper connecting pipe 21, unit electro-adsorption chamber 3, raw liquid inlet 30, positive electrode plate 31, negative electrode plate 32, salt ion concentration measuring instrument 33, protection plate 34, electric plug valve 4, positioning flange 5, inner sealing ring 6, adhesive bonding layer 7, insulating plate 8;

[0032] Adjustment tank 01; raw liquid tank 02; evaporation separator 03; softening decarbonator 04; gravity flow multi-media filter 05. Specific embodiments

[0033] The present utility model will be further described in detail below with reference to the accompanying drawings. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0034] Figures 1 to 9 Schematically shows an industrial wastewater large-flux and low-power consumption desalination device according to an embodiment of the present utility model. As Figures 1 to 7 shown, the industrial wastewater large-flux and low-power consumption desalination device includes: a compartmentalized concentration desalination device 00, and the compartmentalized concentration desalination device 00 includes a purified water chamber 1, a concentrated liquid chamber 2, and a plurality of unit electro-adsorption chambers 3 that are all rectangular boxes;

[0035] The purified water chamber 1 is connected to the industrial water circulation loop through the purified water outlet 10 at the upper end;

[0036] The concentrated liquid chamber 2 is connected to the evaporation separator 03 through the waste liquid outlet 20 at the lower end. The concentrated liquid chamber 2 is connected to the upper end of the purified water chamber 1;

[0037] A number of unit electro-adsorption chambers 3 are symmetrically distributed on both sides of the purified water chamber 1 and the concentrated liquid chamber 2. Two adjacent unit adsorption chambers 3 on each side are fixedly connected. Moreover, the lower end of each unit electro-adsorption chamber 3 is fixedly connected to the purified water chamber 1 and the upper end is fixedly connected to the concentrated liquid chamber 2. The ports on the inner side wall at the lower end of each unit electro-adsorption chamber 3 are fitted with the ports on the outer wall of the purified water chamber 1 and the two ports are fixedly connected with a lower connecting pipe 11. The ports on the inner side wall at the upper end of each unit electro-adsorption chamber 3 are fitted with the ports on the outer wall of the concentrated liquid chamber 2 and the two ports are fixedly connected with an upper connecting pipe 21. In each unit adsorption chamber 3, upper and lower opposite positive electrode plates 31 and negative electrode plates 32 are provided and a raw liquid inlet 30 is provided on the outer side wall. Salt ion concentration measuring instruments 33 are respectively placed at the upper and lower ends of each unit electro-adsorption chamber 3;

[0038] The electric stopcock switches 4 are respectively fixed at the ports of the lower connecting pipe 11 and the upper connecting pipe 21 close to the unit electro-adsorption chamber 3;

[0039] The industrial control PLC controller is electrically connected to the electric stopcock switches 4 and the salt ion concentration measuring instruments 33; Each unit electro-adsorption chamber 3 performs independent ionization and concentration operations. It forms independent purified water passages and sewage passages with the purified water chamber 1 and the concentrated liquid chamber 2 respectively. When the concentration in one unit electro-adsorption chamber 3 reaches the set concentration upper limit of the salt ion concentration measuring instrument 33, the electric stopcock switch 4 closes the lower connecting pipe 11 and opens the upper connecting pipe 21 for sewage discharge. When the sewage discharge reaches the set concentration lower limit of the salt ion concentration measuring instrument 33, the electric stopcock switch 4 closes the upper connecting pipe 21 and opens the lower connecting pipe 11 for purified water discharge, without interfering with the concentration operations of the other unit electro-adsorption chambers 3.

[0040] The beneficial effects of the industrial wastewater desalination device with large flux and low power consumption are as follows: First, several chambered concentration desalination devices 00 are symmetrically arranged on both sides of the purified water chamber 1 and the concentrated liquid chamber 2, greatly increasing their liquid passing area. Therefore, the waste discharge flux is relatively large. At the same time, the concentrated liquid chamber 2 and the purified water chamber 1 are arranged vertically and in the middle, enabling the concentrated liquid and purified water to be concentrated in two independent chambers without interference, allowing for a larger outlet area, significantly improving the liquid passing flux, increasing the maximum flow rate, further enhancing the flux, treating more wastewater under the same power, and significantly reducing the unit power consumption, thus constituting a large-flux and low-power waste treatment structure. Second, several chambered concentration desalination devices 00 operate independently at the same time, and their concentration and waste discharge processes are independent of each other. Each chambered concentration desalination device 00 can operate efficiently. At the same time, when a chambered concentration desalination device 00 reaches the set concentration, only this chambered concentration desalination device 00 needs to be switched for waste discharge, without affecting the operation of other chambered concentration desalination devices 00. Therefore, the multi-chamber and multi-path structure results in a large overall flux and low overall energy consumption. Third, each unit electro-adsorption chamber 3 can be replaced independently without affecting the operation of other chambers, with a low replacement cost and higher equipment utilization rate. Fourth, a set salt ion concentration measuring instrument 33 and an electric plug valve 4 are provided, which can monitor the liquid concentration at any time, switch the corresponding passage, increase the liquid inlet speed, increase the liquid flow flux, and reduce the energy consumption. Fifth, the purified water of this device directly returns to the industrial water circulation for reuse, which can save industrial water consumption, while the highly concentrated liquid is subjected to evaporation separation to form industrial salt, effectively turning waste into useful items and achieving sustainable and green development. Sixth, compared with the membrane treatment method, this structure has the advantages of simple technological process, fewer processes, high stability, low energy consumption, and large flux. Compared with the single-chamber structure, it also achieves the advantages of high stability, low energy consumption, and large flux.

[0041] Preferably, the positive and negative electrodes of the DC power supply 001 pass through the upper and lower wall plates of the unit electro-adsorption chamber 3 and are electrically connected to the positive electrode plate 31 and the negative electrode plate 32.

[0042] Preferably, the inner ends of the purified water outlet 10 and the waste liquid outlet 20 are rectangular flat tubes and the outer ends are round tubes. The beneficial effect is that it is easy to accelerate the formation of a stable large flow rate and increase the liquid discharge speed.

[0043] Preferably, a salt ion concentration measuring instrument 33 is provided for each lower connecting pipe 11 and upper connecting pipe 21. The beneficial effect is that it improves the reliability of salt ion monitoring.

[0044] Furthermore, as Figure 9 shown, the chambered concentration desalination devices 00 are multiple connected in series, and the waste liquid outlet 20 of each chambered concentration desalination device 00 is connected to the evaporation separator 03;

[0045] The raw liquid inlet 30 of the first compartment concentration desalination device 00 is connected to the raw liquid tank 02. The raw liquid inlet 30 of the compartment concentration desalination device 00 at the rear side is connected to the purified water outlet 10 of the previous compartment concentration desalination device 00. The purified water outlet 10 of the last compartment concentration desalination device 00 is connected to the high-salt industrial wastewater generation unit of the industrial water circulation loop. Preferably, the upper limit values of the first salt ion concentration measuring instruments 33 of each compartment concentration desalination device 00 are the same and the lower limit values gradually decrease, that is, the concentrated liquid concentrations of the waste liquid outlets 20 of each compartment concentration desalination device 00 are the same, and the salt ion concentrations of its purified water outlets 10 gradually decrease from front to back. That is to say, the concentrated liquid of the waste liquid outlet 20 of the compartment concentration desalination device 00 is the final target liquid. From front to back, the purified water outlet 10 of the first compartment concentration desalination device 00 produces primary purified water, the purified water outlet 10 of the second compartment concentration desalination device 00 produces secondary purified water, until the purified water outlet 10 of the last compartment concentration desalination device 00 produces the target purified water that can be connected to the industrial water circulation loop. Among them, for the primary purified water, secondary purified water until the target purified water, the salt ion concentrations gradually decrease. The intended effect is: This setting can greatly increase the liquid velocity. The liquid flux Q = fluid velocity V × liquid passing area A. Therefore, when the fluid velocity increases, the wastewater treatment flux can be significantly improved. At the same time, the salt ion concentration of the treated target purified water is small. At the same time, compared with the purified water with a high salt ion concentration generated at a low speed, in order to achieve the same target salt ion concentration, it is necessary to significantly reduce the liquid velocity, resulting in high energy consumption. Therefore, the scheme of increasing the liquid velocity in series can significantly reduce the unit energy consumption.

[0046] Further, as Figure 8 or Figure 9 shown, an adjustment tank 01 is further provided at the front end of the raw liquid tank 02. The water inlet end of the adjustment tank 01 is connected to the high-salt industrial wastewater generation unit through a pipeline. The beneficial effect is: This setting further improves the industrial wastewater treatment speed.

[0047] Preferably, a softening decarbonator 04 is further provided at the front end of the evaporation separator 03. The beneficial effect is: This setting subdivides the sludge of the highly concentrated liquid and ensures the purity of the concentrated salt.

[0048] Preferably, a gravity flow multi-media filter 05 is further provided between the raw liquid tank 02 and the adjustment tank 01. The beneficial effect is: This setting further improves the industrial wastewater treatment speed.

[0049] Preferably, the evaporation separator 03 includes a sodium chloride evaporator and a sodium sulfate evaporator. The beneficial effect is: This setting subdivides the types of concentrated salts and is applicable to more application occasions.

[0050] Further, as Figures 4 to 7As shown in the figure, two adjacent unit electro-adsorption chambers 3 on each side are detachably connected by threaded parts. The unit electro-adsorption chamber 3 is detachably connected to the purified water chamber 1 and the concentrated liquid chamber 2 by threaded parts. The lower through pipe 11 is welded to the outer wall of the purified water chamber 1 and the other end is press-fitted into the hole wall of the unit electro-adsorption chamber 3. The upper through pipe 21 is integrally welded to the outer wall of the concentrated liquid chamber 2 and the other end is press-fitted into the hole wall of the unit electro-adsorption chamber 3. The beneficial effect is that this setting facilitates installation and maintenance.

[0051] Preferably, as Figure 7 shown, the outer end of the lower through pipe 11 or the upper through pipe 21 is sleeved in the positioning flange 5, and the positioning flange 5 is fixedly connected to the hole wall of the unit electro-adsorption chamber 3. The beneficial effect is that the positioning flange 5 maintains a high positioning accuracy.

[0052] Preferably, an inner sealing ring 6 is provided between the inner hole of the positioning flange 5 and the lower through pipe 11 or the upper through pipe 21. An adhesive connection layer 7 is coated on the hole wall of the positioning flange 5 and the unit electro-adsorption chamber 3, and an adhesive connection layer 7 is coated on the end heads of the positioning flange 5 and the lower through pipe 11 or the upper through pipe 21. The beneficial effect is that the setting of the inner sealing ring 6 and the adhesive connection layer 7 can improve the sealing degree of the connection port, without overflow phenomenon. At the same time, the adhesive layer is easy to remove for maintenance and replacement.

[0053] Furthermore, a protection plate 34 made of insulating material is provided between the upper and lower walls of the unit electro-adsorption chamber 3 and the positive electrode plate 31 and the negative electrode plate 32. The purified water chamber 1 and the concentrated liquid chamber 2 are made of insulating material or an insulating board 8 is attached to the outer wall. Preferably, the protection plate 34 and the insulating board 8 are made of polyvinyl chloride (PVC), polyethylene (PE) and nylon. The beneficial effect is that this setting has no electrical loss, efficiently utilizes electric energy, and is beneficial to the realization of low power consumption.

[0054] The present utility model also provides an industrial wastewater large-flux low-power desalination device of another embodiment, including: a compartmentalized concentration desalination device 00, which includes a purified water chamber 1, a concentrated liquid chamber 2 and a plurality of unit electro-adsorption chambers 3; the difference from the first embodiment is that the concentrated liquid chamber 2 is located in the center of the purified water chamber 2, the inner wall of the compartmentalized concentration desalination device 00 is integrally connected to the purified water chamber 1, and one end of the upper through pipe 21 is sleeved and connected to the end hole where the compartmentalized concentration desalination device 00 and the purified water chamber 1 are in contact, and the other end communicates with the end hole of the concentrated liquid chamber 2. This embodiment also realizes a multi-chamber compartmentalized structure, and has the effects of stable desalination with high power and low power consumption and convenient maintenance.

[0055] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. An industrial wastewater desalination device with large flux and low power consumption, characterized in that, Including: a compartmentalized concentration desalination device (00), the compartmentalized concentration desalination device (00) includes a purified water chamber (1), a concentrated liquid chamber (2), and several unit electro-adsorption chambers (3), all of which are rectangular boxes; The purified water chamber (1) is connected to the industrial water circulation loop through the purified water outlet (10) at the upper end; The concentrated liquid chamber (2) is connected to the evaporation separator (03) through the waste liquid outlet (20) at the lower end, and the concentrated liquid chamber (2) is connected to the upper end of the purified water chamber (1); Several unit electro-adsorption chambers (3) are symmetrically distributed on both sides of the purified water chamber (1) and the concentrated liquid chamber (2). Adjacent two unit adsorption chambers (3) on each side are fixedly connected. And the lower end of each unit electro-adsorption chamber (3) is fixedly connected to the purified water chamber (1) and the upper end is fixedly connected to the concentrated liquid chamber (2). The port on the inner side wall of the lower end of each unit electro-adsorption chamber (3) is fitted with the port on the outer wall of the purified water chamber (1), and the two ports are fixedly connected with a lower connecting pipe (11). The port on the inner side wall of the upper end of each unit electro-adsorption chamber (3) is fitted with the port on the outer wall of the concentrated liquid chamber (2), and an upper connecting pipe (21) is fixedly connected between the two ports. A positive electrode plate (31) and a negative electrode plate (32) are arranged oppositely up and down in each unit adsorption chamber (3), and a raw liquid inlet (30) is arranged on the outer side wall. A salt ion concentration measuring instrument (33) is placed at each of the upper and lower ends of each unit electro-adsorption chamber (3); Electric cock switches (4) are respectively fixed at the ports of the lower connecting pipe (11) and the upper connecting pipe (21) close to the unit electro-adsorption chamber (3); The industrial control PLC controller is electrically connected to the electric cock switch (4) and the salt ion concentration measuring instrument (33); Each unit electro-adsorption chamber (3) conducts independent ionization and concentration operations. It forms independent purified water passages and sewage passages with the purified water chamber (1) and the concentrated liquid chamber (2) respectively. When the concentration of one unit electro-adsorption chamber (3) reaches the set concentration upper limit of the salt ion concentration measuring instrument (33), the electric cock switch (4) closes the lower connecting pipe (11) and opens the upper connecting pipe (21) for sewage discharge. When the sewage discharge reaches the set concentration lower limit of the salt ion concentration measuring instrument (33), the electric cock switch (4) closes the upper connecting pipe (21) and opens the lower connecting pipe (11) to discharge purified water, without interfering with the concentration operations of the remaining unit electro-adsorption chambers (3).

2. The industrial wastewater large-flux and low-power consumption desalination device according to claim 1, wherein The inner ends of the purified water outlet (10) and the waste liquid outlet (20) are rectangular flat pipes and the outer ends are circular pipes.

3. The industrial wastewater large-flux and low-power desalination device according to claim 1, characterized in that, A salt ion concentration measuring instrument (33) is arranged on each of the lower connecting pipe (11) and the upper connecting pipe (21).

4. The industrial wastewater large-flux and low-power desalination device according to claim 1, characterized in that A plurality of the compartmentalized concentration desalination devices (00) are connected in series with each other, and the waste liquid outlet (20) of each compartmentalized concentration desalination device (00) is connected to the evaporation separator (03); The raw liquid inlet (30) of the first compartmentalized concentration desalination device (00) is connected to the raw liquid pool (02), and the raw liquid inlet (30) of the subsequent compartmentalized concentration desalination device (00) is connected to the purified water outlet (10) of the previous compartmentalized concentration desalination device (00). The purified water outlet (10) of the last compartmentalized concentration desalination device (00) is connected to the high-salt industrial wastewater generation unit of the industrial water circulation loop.

5. The industrial wastewater large-flux and low-power desalination device according to claim 4, wherein, From front to back, the upper limit values of the first salt ion concentration measuring instruments (33) of each of the said chamber concentration and desalination devices (00) are the same, and the lower limit values gradually decrease.

6. The industrial wastewater large-flux and low-power desalination device according to claim 4, wherein An adjustment tank (01) is further provided at the front end of the said stock solution tank (02), and the water inlet end of the said adjustment tank (01) is connected to the high-salt industrial wastewater generation unit through a pipeline.

7. The industrial wastewater large-flux and low-power desalination device according to claim 4, wherein A softening and decarbonator (04) is further provided at the front end of the said evaporation separator (03); Or a gravity-flow multi-media filter (05) is provided between the said stock solution tank (02) and the adjustment tank (01).

8. The industrial wastewater large-flux and low-power consumption desalination device according to claim 1, characterized in that, Two adjacent unit electro-adsorption chambers (3) on each side are detachably connected by threaded parts, the unit electro-adsorption chamber (3) and the purified water chamber (1) and the concentrated liquid chamber (2) are detachably connected by threaded parts, the lower connecting pipe (11) is welded to the outer wall of the purified water chamber (1) and the other end is press-fitted and sleeved on the hole wall of the unit electro-adsorption chamber (3), and the upper connecting pipe (21) is integrally welded to the outer wall of the concentrated liquid chamber (2) and the other end is press-fitted and sleeved on the hole wall of the unit electro-adsorption chamber (3).

9. The industrial wastewater large-flux and low-power desalination device according to claim 7, characterized in that, The outer end of the said lower connecting pipe (11) or the upper connecting pipe (21) is sleeved in a positioning flange (5), and the positioning flange (5) is fixedly connected to the hole wall of the unit electro-adsorption chamber (3).

10. The industrial wastewater desalination device with large flux and low power consumption according to claim 9, characterized in that, An inner sealing ring (6) is provided between the inner hole of the said positioning flange (5) and the lower connecting pipe (11) or the upper connecting pipe (21), an adhesive connection layer (7) is coated on the inner chamfer (51) of the positioning flange (5) and the hole wall of the unit electro-adsorption chamber (3), and an adhesive connection layer (7) is coated on the end heads of the positioning flange (5) and the lower connecting pipe (11) or the upper connecting pipe (21).

Images