Sewage desalination treatment equipment in process of repairing saline-alkali soil by suaeda salsa

Abstract

The invention discloses sewage desalination treatment equipment in a process of repairing saline-alkali soil by suaeda salsa, and relates to the technical field of sewage treatment, the sewage desalination treatment equipment comprises a solution barrel, and an adding assembly is arranged on the rear surface of the solution barrel. When the sewage treatment device is used, pretreated sewage enters the reinforcing pipe through the sewage pipe and sequentially passes through the conveying pipe, the second flow meter, the communicating pipe, the third electromagnetic valve and the water spraying pipe, and finally the sewage is sprayed out of the two nozzles. A liquid pump is started, a scale inhibitor solution is pumped into a liquid outlet pipe and a fixed pipe through a liquid pumping pipe, passes through a flow dividing pipe, a first flow meter, a connecting pipe and a first electromagnetic valve in sequence, is conveyed into an arc-shaped cover through a liquid inlet pipe, flows out through a side edge round hole, and is fully and uniformly mixed with sewage; the scale inhibitor forms a stable complex with calcium and magnesium ions to prevent the calcium and magnesium ions from being combined with the surface of the membrane, so that the pollution and scaling of the membrane are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a sewage desalination treatment device during the process of using Suaeda salsa to repair saline-alkali land. Background Art

[0002] Saline-alkali land refers to land where the soil contains excessive soluble salts and alkaline substances, resulting in the deterioration of soil properties and affecting plant growth. Suaeda salsa is a salt-tolerant plant. By planting Suaeda salsa, the soil structure and physical and chemical properties of saline-alkali land can be improved. During its growth, Suaeda salsa can absorb salts in the soil, reducing the salt content of the soil; its roots can fix the soil, increasing soil aeration and water permeability, improving soil fertility, and gradually improving saline-alkali land.

[0003] In the prior art, sewage desalination treatment refers to removing or reducing the salts in the sewage generated during the process of using Suaeda salsa to repair saline-alkali land to a certain standard through a series of technologies and methods, so that the treated water can meet the requirements of reuse or discharge, reduce environmental pollution, and improve the utilization efficiency of water resources. Common sewage desalination treatment methods include electrodialysis, where sewage is desalinated by an electrodialyzer.

[0004] The sewage generated during the process of using Suaeda salsa to repair saline-alkali land usually contains calcium and magnesium ions. During the sewage desalination treatment process, first, it undergoes filtration pretreatment and then enters the electrodialysis equipment for desalination treatment. In this process, the calcium and magnesium ions carried by the sewage will enter the electrodialysis equipment together. The calcium and magnesium ions will form scale on the membrane surface, hindering the transport channels of anions and cations in the membrane, reducing the desalination efficiency of the sewage. The scale will also accelerate the aging and damage of the membrane, shortening the service life of the membrane.

[0005] Therefore, we propose a sewage desalination treatment device during the process of using Suaeda salsa to repair saline-alkali land to solve the problems raised in the above background art. Summary of the Invention

[0006] The purpose of the present invention is to provide a sewage desalination treatment device during the process of using Suaeda salsa to repair saline-alkali land to solve the problems in the above background art that during the sewage desalination treatment process in using Suaeda salsa to repair saline-alkali land, the calcium and magnesium ions carried by the sewage are likely to form scale on the membrane surface, hindering the transport channels of anions and cations in the membrane, reducing the desalination efficiency of the sewage, accelerating the aging and damage of the membrane, and shortening the service life of the membrane.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A sewage desalination treatment device during the process of using Suaeda salsa to repair saline-alkali land, including a solution barrel, an addition component is arranged on the rear surface of the solution barrel, an electrodialysis device is arranged on the outer surface of the addition component, an injection component is arranged on the rear surface of the addition component, and a mixing component is arranged inside the addition component;

[0008] The addition component includes three separation tanks and a liquid pump. Liquid inlet pipes are fixedly connected to the tops of the three separation tanks. Arc-shaped covers are fixedly installed on the inner top surfaces of the three separation tanks. The separation tanks are used to mix the pretreated sewage and the scale inhibitor solution. The arc-shaped covers are responsible for evenly spraying the scale inhibitor solution into the separation tanks. The liquid inlet pipes are used to inject the scale inhibitor solution into the arc-shaped covers.

[0009] Preferably, the addition component further includes three first solenoid valves. The input ends of the three first solenoid valves are connected to connecting pipes through flange plates. The tops of the three connecting pipes are connected to first flow meters through flange plates. The input ends of the three first flow meters are connected to shunt pipes through flange plates.

[0010] Preferably, a fixed pipe is fixedly connected to the tops of the three shunt pipes. The input end of the liquid pump is connected to a liquid suction pipe through a flange plate. The output end of the liquid pump is connected to a liquid outlet pipe through a flange plate. One end of the liquid outlet pipe is fixedly connected to the outer surface of the fixed pipe. The tops of the three liquid inlet pipes are respectively connected to the output ends of the three first solenoid valves through flange plates. One end of the liquid suction pipe fixedly penetrates into the interior of the solution tank.

[0011] Preferably, drain pipes are fixedly connected to the bottoms of the three separation tanks. The bottoms of the three drain pipes are connected to second solenoid valves through flange plates. The bottoms of the three second solenoid valves are connected to a pipe mixer through flange plates.

[0012] Preferably, a water injection pipe is fixedly connected to the bottoms of the three pipe mixers. One end of the water injection pipe is connected to the input end of the electrodialysis device through a flange plate. Liquid level sensors are arranged inside the three separation tanks.

[0013] Preferably, the injection component includes three spray pipes. Two spray heads are fixedly connected to one end of each of the three spray pipes. The other ends of the three spray pipes are connected to third solenoid valves through flange plates. The input ends of the three third solenoid valves are connected to communicating pipes through flange plates. One end of each of the three communicating pipes is connected to a second flow meter through a flange plate.

[0014] Preferably, the injection component further includes a sewage pipe. A reinforcing pipe is fixedly connected to one end of the sewage pipe. Three delivery pipes are fixedly connected to the outer surface of the reinforcing pipe. One end of each of the three delivery pipes is respectively connected to the input ends of the three second flow meters through flange plates. One end of each of the three spray pipes fixedly penetrates into the interiors of the three separation tanks.

[0015] Preferably, the mixing component includes three rotating rods, the outer surfaces of the three rotating rods are fixedly installed with spiral conical pipes, a plurality of water flow holes are formed in the outer surfaces of the three spiral conical pipes, the outer surfaces of the tops of the three rotating rods are fixedly installed with liquid receiving covers, and turbine blades are arranged inside the three liquid receiving covers.

[0016] Preferably, water inlet holes are formed in the bottoms of the three liquid receiving covers, the tops of the three spiral conical pipes are respectively fixedly installed at the water inlet holes in the bottoms of the three liquid receiving covers, the inner parts of the three turbine blades are respectively fixedly installed on the outer surfaces of the three rotating rods, the tops of the three rotating rods are respectively movably embedded in the bottoms of the three arc-shaped covers, and the bottoms of the three rotating rods are respectively movably embedded in the bottom surfaces inside the three partition boxes.

[0017] A sewage desalination treatment system during the process of using Suaeda salsa to repair saline-alkali land includes: a current and voltage detection module, a cleaning module, an electrodialysis module, and an intelligent control module;

[0018] The electrodialysis module includes an ion exchange membrane unit, an electrode unit, a partition unit, a water flow distribution unit, a water quality detection unit, and a circulation treatment unit;

[0019] The current and voltage detection module mainly monitors the magnitudes of current and voltage during the electrodialysis process. The cleaning module is responsible for regularly cleaning the ion exchange membrane unit in the electrodialysis module. The ion exchange membrane unit mainly desalinates and separates sewage. The electrode unit provides a direct current electric field to drive the directional migration of ions and initiate electrode reactions. The partition unit separates the ion exchange membranes to form a fresh water chamber and a concentrated water chamber. The water flow distribution unit evenly distributes the concentrated water and fresh water separated by the ion exchange membrane unit to each fresh water chamber and concentrated water chamber. The water quality detection unit is responsible for detecting the water quality indexes of fresh water and concentrated water. The circulation treatment unit returns the fresh water with poor desalination effect back to the ion exchange membrane unit for re-treatment. The intelligent control module automatically monitors and controls the operation of the entire sewage desalination system and adjusts the operation parameters according to the monitored data.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. When the present invention is in use, the pretreated sewage enters the reinforcement pipe through the sewage pipe, and successively passes through the conveying pipe, the second flowmeter, the connecting pipe, the third solenoid valve and the water spraying pipe, and finally the sewage is sprayed out by the two nozzles. The liquid pump is started, and the scale inhibitor solution is pumped through the liquid suction pipe to the liquid outlet pipe and the fixed pipe, successively passing through the shunt pipe, the first flowmeter, the connecting pipe and the first solenoid valve. The scale inhibitor solution is conveyed into the inner part of the arc-shaped cover through the liquid inlet pipe, and flows out through the side round holes, and is fully and evenly mixed with the sewage. The scale inhibitor forms stable complexes with calcium and magnesium ions, preventing the calcium and magnesium ions from binding to the membrane surface, thereby reducing the pollution and scaling of the membrane, and can also form a protective film on the membrane surface to improve the use efficiency of the membrane.

[0022] 2. When the present invention is in use, the second flowmeter detects the sewage flow rate, and the first flowmeter detects the flow rate of the scale inhibitor solution, and conveys the detected data to the control system. When the flow rate data conforms to the set data, the corresponding first solenoid valve, liquid pump and third solenoid valve will be timely controlled to close, realizing quantitative conveying, avoiding excessive or insufficient conveyance of sewage or scale inhibitor, which affects the reprocessing effect. The second solenoid valve is started, and the mixed solution is conveyed through the drain pipe to the pipe mixer for secondary mixing, and enters the electrodialysis device through the water injection pipe for desalination treatment.

[0023] 3. When the present invention is in use, the impact force generated by the sewage sprayed out by the nozzle will cause the turbine blades to rotate, driving the rotating rod, the liquid receiving cover and the spiral conical pipe to rotate together. Part of the sewage falls into the liquid receiving cover, enters the inner part of the spiral conical pipe through the water inlet hole, and flows out through a plurality of water flow holes at different positions and angles, and is mixed with the injected scale inhibitor solution, which is beneficial to promoting the mixing and reaction of the sewage and the scale inhibitor solution. At the same time, the rotating spiral conical pipe can push the sewage to circulate in the separation box, enabling the sewage and the scale inhibitor to fully contact and mix, without the need for electric drive stirring, saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the first-angle three-dimensional view of the sewage desalination treatment device in the process of using Suaeda salsa to repair saline-alkali land according to the present invention;

[0025] Figure 2 is the second-angle three-dimensional view of the sewage desalination treatment device in the process of using Suaeda salsa to repair saline-alkali land according to the present invention;

[0026] Figure 3 is the unfolded three-dimensional view of the structure of the injection component in the sewage desalination treatment device in the process of using Suaeda salsa to repair saline-alkali land according to the present invention;

[0027] Figure 4 is the schematic cross-sectional view of the structure of the addition component in the sewage desalination treatment device in the process of using Suaeda salsa to repair saline-alkali land according to the present invention;

[0028] Figure 5This is a schematic cross-sectional view of the separation box in the sewage desalination treatment equipment during the process of using Suaeda salsa to repair saline-alkali land in the present invention;

[0029] Figure 6 This is an unfolded three-dimensional view of the structure of the water spray pipe in the sewage desalination treatment equipment during the process of using Suaeda salsa to repair saline-alkali land in the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of the structure of the mixing component in the sewage desalination treatment equipment during the process of using Suaeda salsa to repair saline-alkali land in the present invention;

[0031] Figure 8 This is a schematic cross-sectional view of the structure of the arc-shaped cover in the sewage desalination treatment equipment during the process of using Suaeda salsa to repair saline-alkali land in the present invention;

[0032] Figure 9 This is a system diagram of the sewage desalination treatment equipment during the process of using Suaeda salsa to repair saline-alkali land in the present invention.

[0033] In the figure:

[0034] 1. Solution barrel; 2. Adding component; 201. Separation box; 202. Liquid inlet pipe; 203. First solenoid valve; 204. Connecting pipe; 205. First flowmeter; 206. Shunt pipe; 207. Fixed pipe; 208. Liquid outlet pipe; 209. Liquid pump; 210. Liquid extraction pipe; 211. Arc-shaped cover; 212. Drain pipe; 213. Second solenoid valve; 214. Pipe mixer; 215. Water injection pipe; 3. Electrodialysis equipment; 4. Injection component; 401. Sewage pipe; 402. Reinforcing pipe; 403. Delivery pipe; 404. Second flowmeter; 405. Connecting pipe; 406. Third solenoid valve; 407. Water spray pipe; 408. Sprinkler head; 5. Mixing component; 501. Rotating rod; 502. Spiral conical pipe; 503. Water flow hole; 504. Liquid receiving cover; 505. Turbine blade; 506. Water inlet hole; 6. Liquid level sensor; 7. Current and voltage detection module; 8. Cleaning module; 9. Electrodialysis module; 91. Ion exchange membrane unit; 92. Electrode unit; 93. Spacer unit; 94. Water flow distribution unit; 95. Water quality detection unit; 96. Circulation treatment unit; 10. Intelligent control module. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1: Please refer to Figures 1-9As shown in the figure, the present invention provides a technical solution: a sewage desalination treatment device during the process of using Suaeda salsa to repair saline-alkali land, which includes a solution tank 1. An adding component 2 is arranged on the rear surface of the solution tank 1. An electrodialysis device 3 is arranged on the outer surface of the adding component 2. An injection component 4 is arranged on the rear surface of the adding component 2. A mixing component 5 is arranged inside the adding component 2. The adding component 2 includes three partition boxes 201 and a liquid pump 209. Liquid inlet pipes 202 are fixedly connected to the tops of the three partition boxes 201. Arc-shaped covers 211 are fixedly installed on the top surfaces inside the three partition boxes 201. The partition boxes 201 are used for mixing pretreated sewage and scale inhibitor solution. The arc-shaped covers 211 are responsible for evenly sprinkling the scale inhibitor solution into the partition boxes 201. The liquid inlet pipes 202 are used for injecting the scale inhibitor solution into the arc-shaped covers 211. The adding component 2 further includes three first solenoid valves 203. The input ends of the three first solenoid valves 203 are connected to connecting pipes 204 through flanges. The tops of the three connecting pipes 204 are connected to first flow meters 205 through flanges. The input ends of the three first flow meters 205 are connected to shunt pipes 206 through flanges. The tops of the three shunt pipes 206 are fixedly connected to a fixed pipe 207. The input end of the liquid pump 209 is connected to a liquid suction pipe 210 through a flange. The output end of the liquid pump 209 is connected to a liquid outlet pipe 208 through a flange. One end of the liquid outlet pipe 208 is fixedly connected to the outer surface of the fixed pipe 207. The tops of the three liquid inlet pipes 202 are respectively connected to the output ends of the three first solenoid valves 203 through flanges. One end of the liquid suction pipe 210 fixedly penetrates into the interior of the solution tank 1. Drain pipes 212 are fixedly connected to the bottoms of the three partition boxes 201. The bottoms of the three drain pipes 212 are connected to second solenoid valves 213 through flanges. The bottoms of the three second solenoid valves 213 are connected to pipe mixers 214 through flanges. The bottoms of the three pipe mixers 214 are fixedly connected to water injection pipes 215. One end of the water injection pipe 215 is connected to the input end of the electrodialysis device 3 through a flange. Liquid level sensors 6 are arranged inside the three partition boxes 201. The injection component 4 includes three spray pipes 407. Two spray heads 408 are fixedly connected to one end of each of the three spray pipes 407. The other ends of the three spray pipes 407 are connected to third solenoid valves 406 through flanges. The input ends of the three third solenoid valves 406 are connected to communicating pipes 405 through flanges. One end of each of the three communicating pipes 405 is connected to a second flow meter 404 through a flange. The injection component 4 further includes a sewage pipe 401. One end of the sewage pipe 401 is fixedly connected to a reinforcement pipe 402. Three conveying pipes 403 are fixedly connected to the outer surface of the reinforcement pipe 402. One end of each of the three conveying pipes 403 is respectively connected to the input ends of the three second flow meters 404 through flanges. One end of each of the three spray pipes 407 fixedly penetrates into the interiors of the three partition boxes 201.

[0037] In this embodiment, during use, a liquid injection pipe and a waste liquid pipe are provided at the top of the solution barrel 1. A threaded cap is sleeved on the top end of the liquid injection pipe in a threaded manner, and a valve is provided on the outer surface of the waste liquid pipe, as Figure 1As shown, the electrodialysis device 3 is provided with a fresh water outlet pipe and a concentrated water outlet pipe. The electrodialysis device 3 is an existing mature technology and will not be elaborated here. One end of the sewage pipe 401 is connected to an external pretreatment device. After the sewage is filtered through quartz sand, activated carbon and an ultrafiltration device by the pretreatment device, it enters the reinforcement pipe 402 through the sewage pipe 401. The third solenoid valves 406 in the middle and on the right are both in the closed state. The sewage in the reinforcement pipe 402 enters the corresponding second flowmeter 404, connecting pipe 405, third solenoid valve 406 and spray pipe 407 through the conveying pipe 403 on the left, and is sprayed onto the mixing assembly 5 by two nozzles 408. Part of the sewage directly falls into the left partition box 201, and part of the sewage is discharged into the partition box 201 through the mixing assembly 5. During the process of conveying sewage, the second flowmeter 404 detects the sewage flow rate and transmits the detected flow rate data to an external control system. While injecting sewage, the liquid pump 209 is started, and the scale inhibitor solution in the solution tank 1 is pumped into the liquid outlet pipe 208 and the fixed pipe 207 through the liquid suction pipe 210. The first solenoid valves 203 in the middle and on the right are both in the closed state, so that the scale inhibitor solution in the fixed pipe 207 flows through the shunt pipe 206 on the left to the first flowmeter 205, connecting pipe 204 and first solenoid valve 203 in sequence, and the scale inhibitor solution is conveyed into the partition box 201 through the liquid inlet pipe 202 and falls into the inner part of the arc-shaped cover 211, where it is mixed with the sewage. Six circular holes are equidistantly opened on the outer surface of the arc-shaped cover 211, and the spray pipe 407 is located between two adjacent circular holes. Then the scale inhibitor solution flows out through the circular holes on the side of the arc-shaped cover 211, and multiple strands of scale inhibitor solution fall downward in an arc into the partition box 201, which is conducive to the more uniform distribution of the scale inhibitor in the partition box 201, avoiding the situation of too high or too low local concentration that may occur when the scale inhibitor impacts and falls in a concentrated stream, being conducive to the full and uniform mixing of the scale inhibitor and the sewage, and improving the scale inhibition effect. Under the action of the mixing assembly 5, the scale inhibitor solution and the sewage are fully mixed. The scale inhibitor can form stable complexes with calcium and magnesium ions in the water, prevent them from forming insoluble salt precipitates on the membrane surface, avoid the adhesion of these precipitates to the membrane surface, reduce the membrane pollution and scaling, extend the service life of the membrane, and maintain the stable operation of the electrodialysis device 3. At the same time, the first flowmeter 205 detects the flow rate of the flowing scale inhibitor solution and transmits the detected flow rate to an external control system. When the control system receives the scale inhibitor flow rate data transmitted by the first flowmeter 205 and it conforms to the set data, it will control the first solenoid valve 203 and the liquid pump 209 on the left to close and stop the delivery of the scale inhibitor solution. When the control system receives the sewage flow rate data transmitted by the second flowmeter 404 and it conforms to the set data, it will control the third solenoid valve 406 on the left to close, and control the third solenoid valve 406 in the middle, the first solenoid valve 203 in the middle and the liquid pump 209 to start, and convey the sewage and the scale inhibitor solution to the middle partition box 201 for mixing treatment.When the intermediate separation tank 201 is filled with an appropriate amount of scale inhibitor solution and sewage, the same as the above working process, at this time, control the third solenoid valve 406 on the right, the first solenoid valve 203 on the right and the liquid pump 209 to start, and transport the sewage and scale inhibitor solution to the separation tank 201 on the right for mixing treatment. During this process, the sewage and scale inhibitor solution in the left separation tank 201 are fully mixed and reacted. Start the second solenoid valve 213 on the left, and transport the mixed solution in the left separation tank 201 to the pipe mixer 214 through the drain pipe 212 for secondary mixing, and enter the membrane stack inside the electrodialysis device 3 through the water injection pipe 215. Under the action of a direct current electric field, the cations and anions in the sewage migrate to the corresponding electrodes respectively. Through the selective permeation of the cation exchange membrane and the anion exchange membrane, the ions are separated between different compartments, forming concentrated water and fresh water, and are discharged through the fresh water outlet pipe and the concentrated water outlet pipe respectively, so as to achieve the effect of sewage desalination treatment. At the same time as draining, start the left liquid level sensor 6 to detect the liquid level in the left separation tank 201, and transmit the detected liquid level information to the control system. When the liquid level in the left separation tank 201 matches the set liquid level data, the second solenoid valve 213 on the left will be controlled to close. Under the action of the adding component 2, a scale inhibitor solution can be added to the sewage to form stable complexes or chelates with calcium and magnesium ions, so that these ions remain dissolved in water. Moreover, the scale inhibitor molecules have a special structure. One end of them can adsorb on the active sites on the membrane surface, and the other end extends into the water. Due to the steric hindrance and charge repulsion of the scale inhibitor molecules, calcium and magnesium ions are prevented from approaching the active sites on the membrane surface, thus forming a protective film on the membrane surface to prevent calcium and magnesium ions from binding to the membrane surface, thereby reducing membrane pollution and scaling. This protective film is a relatively loose structure, and its pore size and charge distribution do not hinder the normal passage of ions through the membrane. Moreover, the main function of the scale inhibitor is aimed at easily scaling ions such as calcium and magnesium. For the cations and anions that need to be removed during the electrodialysis process, the protective film will not produce a substantial hindrance effect. Instead, due to reducing the scaling and pollution on the membrane surface, it is beneficial for these ions to pass through the membrane more smoothly, solving the problem that calcium and magnesium ions carried by sewage are prone to scale on the membrane surface during the sewage desalination treatment process in the process of Suaeda salsa repairing saline-alkali land, hindering the transmission channels of cations and anions in the membrane, reducing the desalination efficiency of sewage, accelerating the aging and damage of the membrane, and shortening the service life of the membrane.

[0038] Example 2: As Figures 3-7As shown in the figure, an adding component 2 is provided on the rear surface of the solution barrel 1, an electrodialysis device 3 is provided on the outer surface of the adding component 2, an injection component 4 is provided on the rear surface of the adding component 2, and a mixing component 5 is provided inside the adding component 2. The mixing component 5 includes three rotating rods 501. Spiral conical pipes 502 are fixedly installed on the outer surfaces of the three rotating rods 501. A plurality of water flow holes 503 are formed on the outer surfaces of the three spiral conical pipes 502. Liquid receiving covers 504 are fixedly installed on the outer surfaces of the tops of the three rotating rods 501. Turbine blades 505 are provided inside the three liquid receiving covers 504. Water inlet holes 506 are formed at the bottoms of the three liquid receiving covers 504. The tops of the three spiral conical pipes 502 are respectively fixedly installed at the water inlet holes 506 at the bottoms of the three liquid receiving covers 504. The inner parts of the three turbine blades 505 are respectively fixedly installed on the outer surfaces of the three rotating rods 501. The tops of the three rotating rods 501 are respectively movably embedded at the bottoms of the three arc-shaped covers 211. The bottoms of the three rotating rods 501 are respectively movably embedded at the bottoms of the inner parts of the three partition boxes 201.

[0039] In this embodiment, during use, the nozzle 408 is inclined and faces the arc-shaped blades of the turbine blade 505. When the nozzle 408 sprays sewage, the sewage rushes towards the arc-shaped blades of the turbine blade 505. Under the impact of the water flow, the turbine blade 505 rotates, driving the rotating rod 501, the liquid receiving cover 504 and the spiral conical pipe 502 to rotate together. Part of the sprayed sewage directly falls into the partition box 201, and part falls into the liquid receiving cover 504, and then enters the spiral conical pipe 502 through the water inlet hole 506 and flows along the rotating spiral conical pipe 502. During this process, the sewage will flow outwards through the plurality of water flow holes 503 at different positions and angles and be mixed with the injected scale inhibitor solution. Turbulence will be generated while the sewage flows out, which is beneficial to promoting the mixing and reaction of the sewage and the scale inhibitor solution, improving the scale inhibition effect, and better protecting the electrodialysis membrane from the influence of calcium and magnesium ion scaling. At the same time, the rotating spiral conical pipe 502 can push the sewage to circulate in the partition box 201, enabling the sewage and the scale inhibitor to be fully contacted and mixed, and there is no need to use a separate drive source to achieve the stirring function, saving power consumption.

[0040] Embodiment 3: As Figure 9As shown in the figure, a sewage desalination treatment system during the process of using Suaeda salsa to repair saline-alkali land includes: a current and voltage detection module 7, a cleaning module 8, an electrodialysis module 9, and an intelligent control module 10; the electrodialysis module 9 includes an ion exchange membrane unit 91, an electrode unit 92, a separator unit 93, a water flow distribution unit 94, a water quality detection unit 95, and a circulation treatment unit 96; the current and voltage detection module 7 mainly monitors the magnitudes of current and voltage during the electrodialysis process, the cleaning module 8 is responsible for regularly cleaning the ion exchange membrane unit 91 in the electrodialysis module 9, the ion exchange membrane unit 91 mainly performs desalination separation on sewage, the electrode unit 92 provides a direct current electric field to drive the directional migration of ions and trigger electrode reactions, the separator unit 93 separates the ion exchange membranes to form a fresh water chamber and a concentrated water chamber, the water flow distribution unit 94 evenly distributes the concentrated water and fresh water separated by the ion exchange membrane unit 91 into each fresh water chamber and concentrated water chamber, the water quality detection unit 95 is responsible for detecting the water quality indicators of fresh water and concentrated water, and the circulation treatment unit 96 sends the fresh water with poor desalination effect back to the ion exchange membrane unit 91 for re-treatment, and the intelligent control module 10 automatically monitors and controls the operation of the entire sewage desalination system and adjusts the operation parameters according to the monitoring data.

[0041] In this embodiment, during use, the electrode unit 92 provides a direct current electric field to drive the directional migration of ions and trigger electrode reactions. The cation exchange membrane in the ion exchange membrane unit 91 allows cations to pass through, and the anion exchange membrane allows anions to pass through. Under the action of the electric field, the cations and anions in the solution migrate through the corresponding membranes respectively. The separator unit 93 separates the ion exchange membranes to form a fresh water chamber and a concentrated water chamber to ensure the uniform flow of the solution between the membranes. The water flow distribution unit 94 evenly distributes the sewage into each fresh water chamber and concentrated water chamber. The water quality detection unit 95 detects the water quality indicators of fresh water and concentrated water to evaluate the desalination effect and understand whether the electrodialysis process is normal. By detecting the conductivity, salt concentration, pH value, turbidity, etc. of fresh water, and the salt concentration, ion composition, etc. of concentrated water, data collection and analysis are carried out using corresponding sensors and detection instruments. The circulation treatment unit 96 sends the fresh water with poor desalination effect back to the electrodialysis module 9 for re-treatment to improve the desalination effect. The intelligent control module 10 automatically monitors and controls the operation of the entire sewage desalination system, adjusts the operation parameters according to the monitoring data, realizes the optimized operation and automated management of the system. The cleaning module 8 regularly cleans the ion exchange membranes in the electrodialysis module 9 to remove the dirt and scaling substances on the membrane surface, maintain the performance and desalination effect of the membrane, and extend the service life of the membrane. The current and voltage detection module 7 real-time monitors the magnitudes of current and voltage during the electrodialysis process to ensure that the electrodialysis module 9 operates under suitable electric field conditions.

[0042] The effects and working principle achieved by the entire mechanism are as follows: The pretreated sewage enters the reinforcement pipe 402 through the sewage pipe 401, and then enters the second flowmeter 404, the connecting pipe 405, the third solenoid valve 406, and the spray pipe 407 through the conveying pipe 403 on the left. The sewage is sprayed onto the arc-shaped blades of the turbine blade 505 by the two nozzles 408. Under the impact of the water flow, the turbine blade 505 rotates, driving the rotating rod 501, the liquid receiving cover 504, and the spiral conical pipe 502 to rotate together. Part of the sprayed sewage directly falls into the separation tank 201, and part falls into the liquid receiving cover 504, and then enters the inside of the spiral conical pipe 502 through the water inlet hole 506 and flows outwards at different positions and angles through multiple water flow holes 503. The second flowmeter 404 detects the sewage flow rate and transmits the detected flow rate data to the external control system. Start the liquid pump 209, draw the scale inhibitor solution into the liquid outlet pipe 208 and the fixed pipe 207 through the liquid extraction pipe 210, and flow through the shunt pipe 206 on the left to the first flowmeter 205, the connecting pipe 204, and the first solenoid valve 203 in sequence. The scale inhibitor solution is conveyed into the inside of the arc-shaped cover 211 through the liquid inlet pipe 202 and flows outwards through the round holes on the side to be mixed with the sewage. The first flowmeter 205 detects the flow rate of the scale inhibitor solution and transmits the detected flow rate to the external control system. When the control system receives that the scale inhibitor flow rate data transmitted by the first flowmeter 205 matches the set data, it will control the first solenoid valve 203 and the liquid pump 209 on the left to close and stop the conveyance of the scale inhibitor solution. When the control system receives that the sewage flow rate data transmitted by the second flowmeter 404 matches the set data, it will control the third solenoid valve 406 on the left to close, and control the third solenoid valve 406 in the middle, the first solenoid valve 203 in the middle, and the liquid pump 209 to start, and convey the sewage and the scale inhibitor solution to the middle separation tank 201 for mixing treatment. When an appropriate amount of scale inhibitor solution and sewage are injected into the middle separation tank 201, the same working process as above is carried out. At this time, control the third solenoid valve 406 on the right, the first solenoid valve 203 on the right, and the liquid pump 209 to start, and convey the sewage and the scale inhibitor solution to the separation tank 201 on the right for mixing treatment. During this process, the sewage and the scale inhibitor solution in the left separation tank 201 are fully mixed and reacted. Start the second solenoid valve 213 on the left, and convey the mixed solution in the left separation tank 201 to the pipe mixer 214 through the drain pipe 212 for secondary mixing, and enter the membrane stack inside the electrodialysis device 3 through the water injection pipe 215. Under the action of the DC electric field, the cations and anions in the sewage migrate to the corresponding electrodes respectively. Through the selective permeation of the cation exchange membrane and the anion exchange membrane, the ions are separated between different compartments to form concentrated water and fresh water, which are discharged through the fresh water outlet pipe and the concentrated water outlet pipe respectively.Activate the left liquid level sensor 6 to detect the liquid level in the left partition box 201, and transmit the detected liquid level information to the control system. When the liquid level in the left partition box 201 matches the set liquid level data, the left second solenoid valve 213 will be controlled to close.

[0043] Among them, the first solenoid valve 203, the first flow meter 205, the liquid pump 209, the second solenoid valve 213, the pipeline mixer 214, the electrodialysis device 3, the second flow meter 404, the third solenoid valve 406, and the liquid level sensor 6 are all prior arts. Their components and operating principles are all publicly known technologies and will not be explained in detail here.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sewage desalination treatment device in the process of repairing saline-alkali land with Suaeda salsa, comprising a solution barrel (1), characterized in that: An adding component (2) is arranged on the rear surface of the solution barrel (1), an electrodialysis device (3) is arranged on the outer surface of the adding component (2), an injection component (4) is arranged on the rear surface of the adding component (2), and a mixing component (5) is arranged inside the adding component (2); The adding component (2) comprises three partition boxes (201) and a liquid pump (209); the tops of the three partition boxes (201) are fixedly connected with liquid inlet pipes (202); the top surfaces of the three partition boxes (201) are fixedly installed with arc covers (211); the partition boxes (201) are used to mix pretreated sewage and antiscalant solution; the arc covers (211) are responsible for evenly sprinkling the antiscalant solution into the partition boxes (201); and the liquid inlet pipes (202) are used to inject the antiscalant solution into the arc covers (211).

2. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 1 is characterized in that: The adding component (2) further comprises three first solenoid valves (203), the input ends of the three first solenoid valves (203) are connected to connecting pipes (204) via flanges, the top ends of the three connecting pipes (204) are connected to first flow meters (205) via flanges, and the input ends of the three first flow meters (205) are connected to shunt pipes (206) via flanges.

3. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 2 is characterized in that: The top ends of the three diversion pipes (206) are fixedly connected to a fixed pipe (207); the input end of the liquid pump (209) is connected to a liquid extraction pipe (210) via a flange; the output end of the liquid pump (209) is connected to a liquid outlet pipe (208) via a flange; one end of the liquid outlet pipe (208) is fixedly connected to the outer surface of the fixed pipe (207); the top ends of the three liquid inlet pipes (202) are respectively connected to the output ends of the three first solenoid valves (203) via flanges; and one end of the liquid extraction pipe (210) is fixedly connected to the interior of the solution barrel (1).

4. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 3 is characterized in that: The bottoms of the three partition boxes (201) are all fixedly connected with drainage pipes (212), the bottom ends of the three drainage pipes (212) are all connected with second solenoid valves (213) via flanges, and the bottom ends of the three second solenoid valves (213) are all connected with pipeline mixers (214) via flanges.

5. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 4 is characterized in that: The bottom ends of the three pipeline mixers (214) are fixedly connected to a water injection pipe (215), one end of which is connected to the input end of the electrodialysis device (3) via a flange, and liquid level sensors (6) are arranged inside the three partition boxes (201).

6. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 5, characterized in that: The injection assembly (4) comprises three water spray pipes (407), one end of each of the three water spray pipes (407) is fixedly connected to two spray heads (408), the other end of each of the three water spray pipes (407) is connected to a third solenoid valve (406) via a flange, the input end of each of the three third solenoid valves (406) is connected to a connecting pipe (405) via a flange, and one end of each of the three connecting pipes (405) is connected to a second flow meter (404) via a flange.

7. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 6, characterized in that: The injection assembly (4) further comprises a sewage pipe (401), one end of which is fixedly connected to a reinforcement pipe (402), the outer surface of which is fixedly connected to three delivery pipes (403), one end of each of which is connected to the input end of three second flow meters (404) via flanges, and one end of each of which is fixedly connected to the interior of three partition boxes (201).

8. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 7, characterized in that: The mixing assembly (5) comprises three rotating rods (501), the outer surfaces of the three rotating rods (501) are fixedly mounted with spiral conical pipes (502), the outer surfaces of the three spiral conical pipes (502) are provided with a plurality of water flow holes (503), the outer surfaces of the top ends of the three rotating rods (501) are fixedly mounted with liquid receiving covers (504), and turbine blades (505) are arranged inside the three liquid receiving covers (504).

9. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 8, characterized in that: The bottoms of the three liquid receiving covers (504) are each provided with a water inlet hole (506); the top ends of the three spiral conical pipes (502) are respectively fixedly mounted at the water inlet holes (506) at the bottoms of the three liquid receiving covers (504); the insides of the three turbine blades (505) are respectively fixedly mounted on the outer surfaces of the three rotating rods (501); the top ends of the three rotating rods (501) are respectively movably embedded in the bottoms of the three arc-shaped covers (211); and the bottom ends of the three rotating rods (501) are respectively movably embedded in the bottom surfaces of the insides of the three partition boxes (201).

10. The sewage desalination treatment equipment in the process of Suaeda salsa repairing saline-alkali land according to claim 9, characterized in that: Also includes: A wastewater desalination treatment system in the process of repairing saline-alkali land with Suaeda salsa, comprising: a current and voltage detection module (7), a cleaning module (8), an electrodialysis module (9) and an intelligent control module (10); The electrodialysis module (9) comprises an ion exchange membrane unit (91), an electrode unit (92), a separator unit (93), a water flow distribution unit (94), a water quality detection unit (95) and a circulation treatment unit (96); The current and voltage detection module (7) mainly monitors the current and voltage during the electrodialysis process; the cleaning module (8) is responsible for regularly cleaning the ion exchange membrane unit (91) in the electrodialysis module (9); the ion exchange membrane unit (91) mainly performs desalination and separation on sewage; the electrode unit (92) provides a direct current electric field to drive ion directional migration and trigger electrode reaction; the partition unit (93) separates the ion exchange membrane to form a fresh water chamber and a concentrated water chamber; the water flow distribution unit (94) evenly distributes the concentrated water and fresh water separated by the ion exchange membrane unit (91) to each fresh water chamber and concentrated water chamber; the water quality detection unit (95) is responsible for detecting the water quality indicators of fresh water and concentrated water; the circulation treatment unit (96) returns fresh water with poor desalination effect to the ion exchange membrane unit (91) for further treatment; and the intelligent control module (10) automatically monitors and controls the operation of the entire sewage desalination system and adjusts the operation parameters according to the detection data.

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