A high-salinity wastewater purification reactor

Abstract

The present application relates to the technical field of high-salinity wastewater treatment, and particularly relates to a high-salinity wastewater purification reactor, which comprises an inner tank body, a wastewater pump and a water inlet pipe; further comprising: two ion permeation membranes oppositely installed at the bottom of a cavity of the tank body, an output end of the water inlet pipe extending into a space one enclosed by the two ion permeation membranes, a surrounding plate installed around the outer side of the two electrodes, a space two for concentrating high-salinity wastewater formed between the surrounding plate and the two ion permeation membranes, the top of the space two and the middle part of a treatment cavity of the tank body being separated by a reverse osmosis membrane, a space three for crystallizing high-salinity wastewater being arranged between the outer side of the surrounding plate and the inner wall of the tank body; an evaporation membrane horizontally installed at the upper part of the treatment cavity of the tank body, a space four for gathering clean water being formed between the evaporation membrane and the reverse osmosis membrane, and a space five for gathering water vapor being arranged between the evaporation membrane and the top of the tank body; the high-salinity wastewater purification reactor improves the speed of crystallization and precipitation of high-salinity wastewater and the efficiency of high-salinity wastewater purification treatment by performing two-stage concentration on the high-salinity wastewater.

Description

Technical Field

[0001] This invention relates to the technical field of high-salinity wastewater treatment, and in particular to a purification reactor for high-salinity wastewater. Background Technology

[0002] High-salinity wastewater refers to industrial wastewater with a total salt content of not less than 3.5 wt%. Various high-salinity wastewater purification reactors are disclosed in the prior art. For example, a continuous reaction fluidized bed crystallizer for high-salinity wastewater, disclosed in CN220283768U, includes a reactor shell. The reactor shell is characterized by having reaction liquid distribution pipe structures installed on its upper and lower sides. Each reaction liquid distribution pipe structure includes an inlet pipe, with a water distribution seat connected to its upper flange. An L-shaped branch pipe is connected to the outer flange of an integrally formed connecting pipe head on the outer side of the water distribution seat. The arrangement of the inlet pipe, water distribution seat, L-shaped branch pipe, and nozzles ensures more uniform dispersion of the high-salinity wastewater and the precipitant water, improves the contact between the high-salinity wastewater and the precipitant water, and results in a more complete reaction.

[0003] However, the aforementioned high-salt wastewater processors do not have the structure and function to further concentrate high-salt wastewater. Unconcentrated high-salt wastewater crystallizes and precipitates relatively slowly, resulting in low purification efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a purification reactor for high-salt wastewater that improves the crystallization and precipitation rate of high-salt wastewater by performing secondary concentration, thereby improving the purification efficiency of high-salt wastewater.

[0005] This invention discloses a high-salinity wastewater purification reactor, comprising a tank with an internal treatment chamber, wherein the bottom inlet of a wastewater pump is connected to the output of the wastewater pump via an inlet pipe; further comprising: two ion-permeable membranes installed opposite each other at the bottom of the chamber of the tank, the output of the inlet pipe extending into a space enclosed by the two ion-permeable membranes, each ion-permeable membrane allowing only anions or cations to pass through; two electrodes are respectively installed on the outer sides of the two ion-permeable membranes, forming an electric field between the two electrodes, the electric field force causing the anions or cations in the space to undergo primary concentration by passing through the two ion-permeable membranes; and a surrounding plate installed on the outer sides of the two electrodes, the surrounding plate and the two ion-permeable membranes... Space 2, where high-salt wastewater is concentrated, is formed between the membranes. The tops of Spaces 1 and 2 are separated from the middle of the tank's treatment chamber by a reverse osmosis membrane, which is used for secondary concentration of the high-salt wastewater. Space 3, where high-salt wastewater crystallizes, is located between the outer side of the enclosure and the inner wall of the tank. Spaces 2 and 3 are connected by a connecting component. An evaporator 1 for heating and concentrating wastewater is installed in Space 3. An evaporation membrane is horizontally installed in the upper part of the tank's treatment chamber. Space 4, where clean water is collected, is located between the evaporation membrane and the reverse osmosis membrane. An evaporator 2 for heating clean water is installed in Space 4. Space 5, where water vapor is collected, is located between the evaporation membrane and the top of the tank. Water vapor is discharged into the air... Space 5; During operation, the wastewater pump draws high-salt wastewater treated with organic matter into Space 1 at a certain pressure through the inlet pipe. The two electrodes are energized, creating an electric field between them. Under the influence of this electric field, anions and cations in Space 1 are concentrated in Space 2 through two ion-permeable membranes, achieving primary concentration of the high-salt wastewater. Non-conductive and non-ionic impurities remain in Space 1. Due to the pressurization of the wastewater pump, the wastewater pressure in both Space 1 and Space 2 is high. This pressure causes the concentrated wastewater in Space 2 to pass through a reverse osmosis membrane, allowing water from the concentrated wastewater to enter Space 5. The current high-salinity wastewater in Space 2 is concentrated in two stages, and the water is transported. The concentrated wastewater is input into Space 4 through a connecting component. Evaporator 1 heats the concentrated wastewater, causing the water to evaporate and produce saturated liquid and salt crystals. The purified water obtained by reverse osmosis through the reverse osmosis membrane is collected in Space 4. Evaporator 2 heats the purified water to form water vapor, which is collected in Space 5 through the evaporation membrane, thus intercepting impurities in the purified water. The water vapor in Space 5 is discharged from the tank and condensed to obtain qualified discharge water. Compared with the existing technology, this technology has the structure and function of secondary concentration of high-salinity wastewater, which improves the crystallization and precipitation speed of high-salinity wastewater and improves the purification efficiency of high-salinity wastewater.

[0006] Preferably, the system also includes a compressor installed outside the tank. The input end of the compressor is connected to the top of the processing chamber of the tank via a suction pipe. The input end of the suction pipe extends into space five. Evaporator two is expansion radiator one. The output end of the compressor is connected to the output end of expansion radiator one via steam pipe one. A drain pipe one is installed at the output end of expansion radiator one, and the drain pipe one extends outside the tank. When the compressor operates, it extracts water vapor from space five through the suction pipe, making space five a low-pressure state. This low-pressure state is conducive to the evaporation of clean water in space four. The low-temperature water vapor extracted through the suction pipe enters the compressor and is compressed to form high-pressure, high-temperature water vapor. The high-temperature, high-pressure water vapor is input into expansion radiator one through steam pipe one, causing the high-pressure, high-temperature water vapor to expand and decrease in pressure in expansion radiator one while releasing heat to the clean water in space four, causing the clean water to evaporate. This causes the high-pressure, high-temperature water vapor in expansion radiator one to condense into discharge water, which is discharged through drain pipe one. The condensation effect of the water vapor is good. The mechanical energy of the compressor is used to evaporate water and condense water vapor, resulting in high energy utilization.

[0007] Preferably, the device also includes a salinity sensor installed on the tank, extending into the fourth space, and used to detect the salinity of the clean water in the fourth space; a return pipe with its input end extending into the fourth space, and its output end connected to the input end of the wastewater pump; a valve is installed on the return pipe; the salinity sensor can be one of the following: a linear salinity meter, an electrode salinity meter, a salinity sensor, an online salinity analyzer, a temperature, salinity, and depth (CTD) analyzer; the salinity sensor monitors the salinity value of the clean water in the fourth space in real time; when the salinity value reaches a threshold, the control system of this device sends a signal to the valve of the return pipe, causing the valve of the return pipe to open, drawing out a portion of the clean water in the fourth space and returning it to the wastewater pump, thereby allowing the returned clean water to be purified again, preventing excessive salinity in the clean water in the fourth space from causing scaling or other damage to the expansion radiator, reverse osmosis membrane, evaporation membrane, and tank.

[0008] Preferably, it also includes a three-way valve 1 connected to the output end of the first channel of the expansion radiator 1, a second channel of the three-way valve 1 connected to the input end of the drain pipe 1, and a water pipe installed in the third channel of the three-way valve 1, with the output end of the water pipe located in the space 4; when a portion of the clean water in the space 4 is discharged through the return pipe, the three-way valve 1 switches, so that the expansion radiator 1 is connected to the water pipe through the three-way valve 1, so that the condensed discharge water in the expansion radiator 1 is input into the space 4, thereby rapidly reducing the salinity of the clean water in the space 4 to the set value, and realizing rapid adjustment of salinity.

[0009] Preferably, the connecting component is a concentrator pipe that horizontally penetrates the enclosure, and a pressure valve is installed on the concentrator pipe; when the pressure of the concentrated wastewater in space two reaches the set value, the pressure valve opens, allowing a portion of the concentrated wastewater to be input into space three through the concentrator pipe, thereby reducing the pressure in space two. The concentrated wastewater in space three is then isolated and subjected to evaporation and crystallization treatment, without interfering with space two.

[0010] Preferably, it also includes a two-way valve two connected to the output end of the compressor via the first channel, a second channel of the two-way valve two connected to the input end of the steam pipe one, and a third channel of the two-way valve two connected to the input end of the steam pipe two; an expansion radiator two is installed in the space three, the input end of the expansion radiator two is connected to the output end of the steam pipe two, and a drain pipe two is installed at the output end of the expansion radiator two, extending out of the tank; the high-pressure, high-temperature steam output from the compressor is distributed through the three-way valve two and input into the steam pipe one and the steam pipe two respectively, and the high-pressure, high-temperature steam output from the steam pipe two is input into the expansion radiator two, so that the high-pressure, high-temperature steam expands and depressurizes in the expansion radiator two while releasing heat to the concentrated wastewater in the space three, causing the concentrated wastewater to evaporate, thereby condensing the high-pressure, high-temperature steam in the expansion radiator two into discharge water and discharging it through the drain pipe two; the condensation effect of the steam is good, and the mechanical energy of the compressor is used to evaporate the water and condense the steam, resulting in high energy utilization.

[0011] Preferably, the second expansion radiator is cone-shaped and located below the concentration pipe. The second expansion radiator guides the concentrated wastewater output from the concentration pipe to spread it out. The concentrated wastewater output from the concentration pipe flows along the cone-shaped surface of the second expansion radiator and spreads out, increasing the contact area between the concentrated wastewater and the second expansion radiator during the flow process and improving the evaporation efficiency of the concentrated wastewater.

[0012] Preferably, it also includes a steam conduit connected at its lower end to space three, and the upper end of the steam conduit connected to space five; a slag discharge pipe connected to the bottom of space three; the water vapor evaporated in space three is input into space five through the steam conduit and extracted by the exhaust pipe, so that the water vapor is discharged efficiently, and the saturated wastewater and crystals at the bottom of space three are discharged from the tank through the slag discharge pipe, which facilitates further salt separation treatment of the saturated wastewater and crystals.

[0013] Preferably, it also includes multiple pressure sensors and multiple temperature sensors. Pressure sensors and temperature sensors are installed in space one, space two, space three, space four and space five, as well as in the water inlet pipe, steam pipe one and steam pipe two. By installing multiple pressure sensors and multiple temperature sensors, the operating status of each component is monitored and detected, and automatic adjustments are made based on the detection data to improve operational stability and reliability.

[0014] Preferably, the device also includes a flange mounted on the inspection port at the bottom of the tank by multiple bolts. A membrane frame is concentrically mounted on the upper end face of the flange, and two ion-osmosis membranes are mounted opposite each other on the membrane frame. The membrane frame supports the two ion-osmosis membranes. The output end of the inlet pipe extends into the interior of the membrane frame, and the reverse osmosis membrane is mounted on the top of the membrane frame. When maintenance is required, the wastewater inside the tank is drained through the inlet pipe, the multiple bolts are removed, and the flange is moved downward from the bottom of the tank. This allows the flange to remove the two ion-osmosis membranes and the reverse osmosis membrane from the inspection port of the tank through the membrane frame. The two ion-osmosis membranes and the reverse osmosis membrane are then replaced or repaired. After resetting the two ion-osmosis membranes and the reverse osmosis membrane, the flange is reinstalled with bolts, thus completing the maintenance work.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it has a structure and function for secondary concentration of high-salt wastewater, improves the crystallization and precipitation rate of high-salt wastewater, and improves the purification efficiency of high-salt wastewater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the front section structure of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention;

[0019] Figure 4 This is a schematic diagram of the isometric structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the isometric structure of the present invention viewed from below;

[0021] Figure 6 This is a schematic diagram of the structure of the present invention after the tank body is disassembled;

[0022] Figure 7 It is a partial cross-sectional structural diagram of the wastewater pump, inlet pipe, ion osmosis membrane, electrode, enclosure plate, reverse osmosis membrane, flange, bolt and membrane frame, etc.

[0023] Figure 8 It is a structural diagram showing the disassembled state of the wastewater pump, inlet pipe, ion osmosis membrane, electrode, enclosure plate, reverse osmosis membrane, flange, bolt and membrane frame, etc.

[0024] Figure 9 It is a structural diagram of the compressor, suction pipe, steam pipe 1, expansion radiator 1, three-way valve 1, water pipe, three-way valve 2, steam pipe 2, expansion radiator 2, and concentration pipe.

[0025] The following are labels in the attached diagram: 1. Tank; 2. Wastewater pump; 3. Inlet pipe; 4. Ion osmosis membrane; 5. Electrode; 6. Enclosure; 7. Reverse osmosis membrane; 8. Evaporation membrane; 9. Compressor; 10. Extraction pipe; 11. Steam pipe one; 12. Expansion radiator one; 13. Drain pipe one; 14. Salinity sensor; 15. Return pipe; 16. Three-way valve one; 17. Water pipe; 18. Three-way valve two; 19. Steam pipe two; 20. Expansion radiator two; 21. Drain pipe two; 22. Concentrator pipe; 23. Pressure valve; 24. Steam conduit; 25. Sludge discharge pipe; 26. Pressure sensor; 27. Temperature sensor; 28. Flange; 29. ​​Bolt; 30. Membrane frame. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. Example

[0027] like Figures 1 to 6 and Figure 8 As shown, a high-salinity wastewater purification reactor includes a tank 1 with an internal treatment chamber. The bottom input end of a wastewater pump 2 is connected to its output end via an inlet pipe 3. The reactor also includes two ion-permeable membranes 4 installed opposite each other at the bottom of the chamber in the tank 1. The output end of the inlet pipe 3 extends into a space enclosed by the two ion-permeable membranes 4. Each ion-permeable membrane 4 allows only anions or cations to pass through. Two electrodes 5 are installed on the outer sides of the two ion-permeable membranes 4, forming an electric field between them. This electric field causes the anions or cations in the space to pass through the two ion-permeable membranes 4 for primary concentration. A surrounding plate 6 is installed around the outer sides of the two electrodes 5, forming a concentrated high-salinity wastewater treatment zone between the surrounding plate 6 and the two ion-permeable membranes 4. Space 2 is separated from the top of the treatment chamber of tank 1 by a reverse osmosis membrane 7. Space 1 is also separated from the top of the treatment chamber of tank 1 by a reverse osmosis membrane 7. The reverse osmosis membrane 7 is used for secondary concentration of high-salt wastewater. Space 3, which crystallizes high-salt wastewater, is set between the outer side of the enclosure 6 and the inner wall of tank 1. Space 2 and Space 3 are connected by a connecting component. Space 3 is equipped with an evaporator 1 for heating and concentrating wastewater. An evaporation membrane 8 is horizontally installed in the upper part of the treatment chamber of tank 1. Space 4, which collects clean water, is located between the evaporation membrane 8 and the reverse osmosis membrane 7. Space 4 is equipped with an evaporator 2 for heating clean water. Space 5, which collects water vapor, is located between the evaporation membrane 8 and the top of tank 1. Water vapor is discharged from Space 5.

[0028] During operation, wastewater pump 2 pumps high-salt wastewater treated with organic matter into space one at a certain pressure through inlet pipe 3. The two electrodes 5 are energized, creating an electric field between them. Under the influence of this electric field, anions and cations in space one pass through two ion-permeable membranes 4 and are concentrated in space two, achieving primary concentration of the high-salt wastewater. This leaves non-conductive and non-ionic impurities in space one. Due to the pressurization from wastewater pump 2, the wastewater pressure in both spaces one and two is high. This pressure causes the concentrated wastewater in space two to pass through reverse osmosis membrane 7 for reverse osmosis, allowing water from the concentrated wastewater to enter space five. This system achieves secondary concentration of high-salinity wastewater in Space 2, as well as water transport. The concentrated wastewater is input into Space 4 through a connecting component. Evaporator 1 heats the concentrated wastewater, causing the water to evaporate and produce saturated liquid and salt crystals. The purified water obtained through reverse osmosis membrane 7 is collected in Space 4. Evaporator 2 heats the purified water to form water vapor, which is collected in Space 5 through evaporation membrane 8, thus intercepting impurities in the purified water. The water vapor in Space 5 is discharged from tank 1 and condensed to obtain qualified discharge water. Compared with existing technologies, this system has the structure and function of secondary concentration of high-salinity wastewater, improving the crystallization and precipitation speed of high-salinity wastewater and increasing the purification efficiency of high-salinity wastewater.

[0029] It also includes multiple pressure sensors 26 and multiple temperature sensors 27. Pressure sensors 26 and temperature sensors 27 are installed in space one, space two, space three, space four and space five, as well as inlet pipe 3, steam pipe one 11 and steam pipe two 19. It also includes a flange 28 installed on the bottom inspection port of tank 1 by multiple bolts 29. A membrane frame 30 is concentrically installed on the upper end face of the flange 28. Two ion permeation membranes 4 are installed opposite to each other on the membrane frame 30. The membrane frame 30 is used to support the installation of the two ion permeation membranes 4. The output end of the inlet pipe 3 extends into the interior of the membrane frame 30. The reverse osmosis membrane 7 is installed on the top of the membrane frame 30.

[0030] When maintenance is required, drain the wastewater inside tank 1 through inlet pipe 3, remove multiple bolts 29, move flange 28 downward from the bottom of tank 1, so that flange 28 can remove two ion permeation membranes 4 and reverse osmosis membranes 7 from the maintenance port of tank 1 through membrane holder 30, replace or repair the two ion permeation membranes 4 and reverse osmosis membranes 7, reset the two ion permeation membranes 4 and reverse osmosis membranes 7, and reinstall flange 28 through bolts 29 to complete the maintenance work.

[0031] Example 2, as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 9As shown, it also includes a compressor 9 installed outside the tank 1. The input end of the compressor 9 is connected to the top of the processing chamber of the tank 1 through a suction pipe 10. The input end of the suction pipe 10 extends into the space 5. The evaporator 2 is an expansion radiator 12. The output end of the compressor 9 is connected to the output end of the expansion radiator 12 through a steam pipe 11. A drain pipe 13 is installed at the output end of the expansion radiator 12, and the drain pipe 13 extends outside the tank 1. It also includes a salinity sensor 14 installed on the tank 1. Sensor 14 extends into space four and is used to detect the salinity of the clean water in space four. A return pipe 15 with its input end extending into space four is connected to the input end of wastewater pump 2. A valve is installed on the return pipe 15. The system also includes a three-way valve 16 with its first channel connected to the output end of expansion radiator 12. The second channel of the three-way valve 16 is connected to the input end of drain pipe 13. A water pipe 17 is installed in the third channel of the three-way valve 16. The output end of the water pipe 17 is located in space four.

[0032] The compressor 9 operates by extracting water vapor from space five through the extraction pipe 10, bringing space five into a low-pressure state. This low-pressure state is conducive to the evaporation of clean water in space four. The low-temperature water vapor extracted through the extraction pipe 10 enters the compressor 9 and is compressed into high-pressure, high-temperature water vapor. The high-pressure, high-temperature water vapor is input into the expansion radiator 12 through the steam pipe 11, causing the high-pressure, high-temperature water vapor to expand and decrease in pressure in the expansion radiator 12, while releasing heat to the clean water in space four, causing the clean water to evaporate. The high-pressure, high-temperature water vapor in the expansion radiator 12 is then condensed into discharge water and discharged through the drain pipe 13. The condensation effect of the water vapor is good, and the mechanical energy of the compressor 9 is used to evaporate the water and condense the water vapor, resulting in high energy utilization.

[0033] The salinity sensor 14 can be one of the following: a line salinity meter, an electrode salinity meter, a salinity sensor, an online salinity analyzer, or a temperature, salinity, and depth (CTD) analyzer. The salinity sensor 14 monitors the salinity value of the clean water in Space 4 in real time. When the salinity value reaches the threshold, the control system of this device sends a signal to the valve of the return pipe 15, causing the valve of the return pipe 15 to open, drawing out a portion of the clean water in Space 4 and returning it to the wastewater pump 2, so that the returned clean water is purified again. After a portion of the clean water in Space 4 is discharged through the return pipe 15, the three-way valve 16 switches, connecting the expansion radiator 12 to the water pipe 17 through the three-way valve 16, so that the condensed water discharged from the expansion radiator 12 is input into Space 4, thereby rapidly reducing the salinity of the clean water in Space 4 to the set value, realizing rapid salinity adjustment, and preventing excessive salinity of the clean water in Space 4 from causing scaling or other damage to the expansion radiator 12, reverse osmosis membrane 7, evaporation membrane 8, and tank 1.

[0034] Example 3, as Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 9 As shown, based on Embodiment 2, the connecting component is a concentrator 22 that horizontally penetrates the enclosure 6, and a pressure valve 23 is installed on the concentrator 22; it also includes a three-way valve 28 connected to the output end of the compressor 9 via a first channel, a second channel of the three-way valve 28 connected to the input end of the steam pipe 11, and a third channel of the three-way valve 28 connected to the input end of the steam pipe 29; an expansion radiator 20 is installed in the space 3, with its input end connected to the output end of the steam pipe 29, and a drain pipe 21 installed at the output end of the expansion radiator 20, extending out of the tank 1; the expansion radiator 20 is conical and located below the concentrator 22, and the expansion radiator 20 guides the concentrated wastewater output from the concentrator 22; it also includes a steam conduit 24 whose lower end is connected to the space 3, and whose upper end is connected to the space 5; and a slag discharge pipe 25 connected to the bottom of the space 3.

[0035] When the pressure of the concentrated wastewater in Space Two reaches the set value, pressure valve 23 opens, allowing a portion of the concentrated wastewater to enter Space Three through concentration pipe 22. This reduces the pressure in Space Two. The concentrated wastewater output from concentration pipe 22 flows along the conical surface of expansion radiator 20 and spreads evenly, increasing the contact area between the concentrated wastewater and expansion radiator 20 during flow. The high-pressure, high-temperature steam output from compressor 9 is distributed through three-way valve 218 and input into steam pipe 11 and steam pipe 29 respectively. The high-pressure, high-temperature steam output from steam pipe 219 is input into expansion radiator 20, allowing the high-pressure, high-temperature steam to... During expansion and depressurization in expansion radiator 20, heat is released to the concentrated wastewater in space 3, causing the concentrated wastewater to evaporate. This causes the high-pressure, high-temperature water vapor in expansion radiator 20 to condense into discharge water, which is then discharged through drain pipe 21. The concentrated wastewater in space 3 is isolated and undergoes evaporation and crystallization treatment without interfering with space 2. The saturated wastewater and crystals at the bottom of space 3 are discharged from tank 1 through slag discharge pipe 25, facilitating further salt separation treatment of the saturated wastewater and crystals. The water vapor evaporated from space 3 is input into space 5 through steam pipe 24 and extracted by suction pipe 10, resulting in efficient discharge of water vapor.

[0036] like Figures 1 to 9As shown, this invention discloses a high-salinity wastewater purification reactor. During operation, the wastewater pump 2 first pumps high-salinity wastewater treated with organic matter into space one at a certain pressure through the inlet pipe 3. Two electrodes 5 are energized, creating an electric field between them. Under the influence of this electric field, anions and cations in space one are concentrated in space two through two ion-permeable membranes 4, achieving primary concentration of the high-salinity wastewater. This leaves non-conductive and non-ionic impurities in space one. Subsequently, due to the pressurization by the wastewater pump 2, the wastewater pressure in both space one and space two is high. Under this pressure, the concentrated wastewater in space two passes through the reverse osmosis membrane 7 for reverse osmosis, allowing water in the concentrated wastewater to pass through the reverse osmosis membrane. 7. The wastewater enters into space five, where it undergoes secondary concentration of the high-salt wastewater from space two and is transported. The concentrated wastewater is then fed into space four through concentration pipe 22. Expansion radiator 20 heats the concentrated wastewater, causing the water to evaporate and produce saturated liquid and salt crystals. The saturated liquid and salt crystals are discharged through slag discharge pipe 25. Finally, the purified water obtained by reverse osmosis through reverse osmosis membrane 7 is collected in space four. Expansion radiator 12 heats the purified water to form water vapor. The water vapor is collected in space five through evaporation membrane 8, which intercepts impurities in the purified water. The water vapor in space five is extracted from tank 1 through suction pipe 10 and compressor 9 and then condensed through expansion radiator 12 and expansion radiator 20 to obtain qualified discharge water.

[0037] The main functions achieved by this invention are:

[0038] 1. By performing secondary concentration on high-salinity wastewater, the rate of crystallization and precipitation of high-salinity wastewater is increased, thereby improving the purification efficiency of high-salinity wastewater.

[0039] 2. By compressing water vapor through compressor 9, the low-temperature steam from the upper stage is compressed into high-temperature steam, providing a heat source for water evaporation and concentrated wastewater crystallization, reducing dependence on external energy and significantly improving energy efficiency.

[0040] 3. The pretreatment concentration, deep concentration, evaporation, crystallization, and vapor compression units are highly integrated into a single vertical tank, reducing connecting pipelines and external equipment and saving floor space.

[0041] 4. It can quickly adjust the salinity of the water in Space 4 to prevent excessive salinity from causing scaling or other damage to the expansion radiator 12, reverse osmosis membrane 7, evaporation membrane 8 and tank 1.

[0042] The high-salinity wastewater purification reactor of this invention uses common mechanical methods for installation, connection, or setup, and can be implemented as long as it achieves the beneficial effects. The tank 1, wastewater pump 2, inlet pipe 3, ion osmosis membrane 4, electrode 5, reverse osmosis membrane 7, evaporation membrane 8, compressor 9, expansion radiator 12, salinity sensor 14, reflux pipe 15, three-way valve 16, three-way valve 28, expansion radiator 20, concentration pipe 22, pressure valve 23, pressure sensor 26, temperature sensor 27, flange 28, bolts 29, and membrane frame 30 are commercially available. Those skilled in the art only need to install and operate them according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-salinity wastewater purification reactor, comprising a tank body (1) internally provided with a treatment chamber, and a wastewater pump (2) having a bottom input end connected with an output end of the wastewater pump (2) through a water inlet pipe (3); characterized in that, Also includes: Two ion-permeable membranes (4) are installed at the bottom of the chamber of the tank (1). The output end of the water inlet pipe (3) extends into the space enclosed by the two ion-permeable membranes (4). The two ion-permeable membranes (4) allow only anions or cations to pass through. Two electrodes (5) are installed on the outside of the two ion-permeable membranes (4). An electric field is formed between the two electrodes (5). The electric field force causes the anions or cations in the space to pass through the two ion-permeable membranes (4) for primary concentration. A space for concentrating high-salt wastewater is formed between a partition plate (6) installed on the outside of the two electrodes (5) and two ion permeation membranes (4). The top of space one and / or space two is separated from the middle of the treatment chamber of the tank (1) by a reverse osmosis membrane (7). The reverse osmosis membrane (7) is used for secondary concentration of high-salt wastewater. A space for crystallizing high-salt wastewater is set between the outside of the partition plate (6) and the inner wall of the tank (1). Space two and space three are connected by a connecting component. An evaporator for heating and concentrating wastewater is set in space three. An evaporation membrane (8) is horizontally installed in the upper part of the processing chamber of the tank (1). Between the evaporation membrane (8) and the reverse osmosis membrane (7) is a space for collecting clean water. An evaporator for heating clean water is set in the space. A space for collecting water vapor is set between the evaporation membrane (8) and the top of the tank (1). A water vapor discharge space is set in the space.

2. The high-salinity wastewater purification reactor of claim 1, wherein, It also includes a compressor (9) installed outside the tank (1). The input end of the compressor (9) is connected to the top of the processing chamber of the tank (1) through the suction pipe (10). The input end of the suction pipe (10) extends into the space five. The evaporator two is an expansion radiator one (12). The output end of the compressor (9) is connected to the output end of the expansion radiator one (12) through the steam pipe one (11). The output end of the expansion radiator one (12) is equipped with a drain pipe one (13). The drain pipe one (13) extends out of the tank (1).

3. The high-salinity wastewater purification reactor of claim 2, wherein, It also includes a salinity sensor (14) installed on the tank (1), the salinity sensor (14) extends into the space four, and the salinity sensor (14) is used to detect the salinity of the clean water in the space four; The input end extends into the return pipe (15) in the space four. The output end of the return pipe (15) is connected to the input end of the wastewater pump (2). A valve is installed on the return pipe (15).

4. The high-salinity wastewater purification reactor of claim 3, wherein, It also includes a three-way valve (16) whose first channel is connected to the output end of the expansion radiator (12), the second channel of the three-way valve (16) is connected to the input end of the drain pipe (13), the third channel of the three-way valve (16) is equipped with a water pipe (17), and the output end of the water pipe (17) is located in space four.

5. The high-salinity wastewater purification reactor as described in claim 2, characterized in that, The connecting component is a concentrator (22) that runs horizontally through the enclosure (6), and a pressure valve (23) is installed on the concentrator (22).

6. A high salinity wastewater purification reactor as claimed in claim 5, characterised in that, It also includes a three-way valve two (18) connected to the output end of the compressor (9) through the first channel, a second channel of the three-way valve two (18) connected to the input end of the steam pipe one (11), and a third channel of the three-way valve two (18) connected to the input end of the steam pipe two (19); an expansion radiator two (20) is installed in the space three, the input end of the expansion radiator two (20) is connected to the output end of the steam pipe two (19), and a drain pipe two (21) is installed at the output end of the expansion radiator two (20), with the drain pipe two (21) extending out of the outside of the tank (1).

7. A high salinity wastewater purification reactor as claimed in claim 6, characterised in that, The second expansion radiator (20) is cone-shaped and located below the thickening pipe (22). The second expansion radiator (20) guides the concentrated wastewater output from the thickening pipe (22) in a flat manner.

8. The high-salinity wastewater purification reactor as described in claim 1, characterized in that, It also includes a steam pipe (24) whose lower end is connected to space three, and the upper end of the steam pipe (24) is connected to space five; and a slag discharge pipe (25) connected to the bottom of space three.

9. The high-salinity wastewater purification reactor of claim 6, wherein, It also includes multiple pressure sensors (26) and multiple temperature sensors (27). Pressure sensors (26) and temperature sensors (27) are installed in Space 1, Space 2, Space 3, Space 4 and Space 5, as well as inlet pipe (3), steam pipe 1 (11) and steam pipe 2 (19).

10. The high-salinity wastewater purification reactor of claim 1, wherein, It also includes a flange (28) installed on the bottom inspection port of the tank (1) by multiple bolts (29), a membrane frame (30) concentrically installed on the upper end face of the flange (28), two ion permeation membranes (4) installed opposite to each other on the membrane frame (30), the membrane frame (30) is used to support the installation of the two ion permeation membranes (4), the output end of the inlet pipe (3) extends into the interior of the membrane frame (30), and the reverse osmosis membrane (7) is installed on the top of the membrane frame (30).

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