Device for treating landfill leachate membrane concentrated solution wastewater

Abstract

The utility model relates to a device for treating landfill leachate membrane concentrated solution wastewater, the device comprises a reaction tower, a dosing assembly, a gas injection part and a micro-electrolysis part, the reaction tower is connected with a water inlet pipe and a water outlet pipe which are used for transporting waste liquid, the water inlet pipe and the water outlet pipe are both communicated with the interior of the reaction tower, a water inlet valve is arranged on the water inlet pipe, and a water outlet valve is arranged on the water outlet pipe. A water outlet valve is arranged on the water outlet pipe; the dosing assembly is communicated with the water inlet pipe and is used for adding persulfate into the water inlet pipe; the gas injection part is connected with the reaction tower and is used for conveying oxygen into the reaction tower; the micro-electrolysis part is positioned in the reaction tower and is used for oxidizing ions in the wastewater. The device has the advantages that the micro-electrolysis reaction and the persulfate advanced oxidation reaction are mutually combined and promoted, and the reaction rate is increased while the effluent quality is improved, so that the effect of treating the landfill leachate membrane concentrated solution more effectively is achieved.

Description

Technical Field

[0001] The present application relates to the field of wastewater treatment, and in particular to a device for treating landfill leachate membrane concentrate wastewater. Background Art

[0002] Landfill is the most common disposal option for urban domestic waste. Leachate is produced during the landfill treatment of domestic waste. Currently, membrane separation technologies such as reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) are commonly used for the final step of leachate treatment. Membrane separation technology produces membrane concentrated wastewater during the treatment of leachate.

[0003] The prior art provides a landfill leachate membrane concentrate treatment system that uses an electrolytic reaction tank to pretreat the membrane concentrate, and then sequentially processes anaerobic and aerobic membrane reactors and Fenton reactions to treat the difficult-to-degrade organic matter in the wastewater, so that the effluent basically meets the recharge water quality standards of the landfill.

[0004] Regarding the above-mentioned related technologies, the startup time of biological wastewater treatment is long, the acclimation of salt-tolerant microorganisms is relatively complicated, and the reaction period is greatly affected by environmental factors; and the cost of electrolytic pretreatment is too high, and electrode loss is a problem in current applications. Therefore, it is necessary to propose a more economical and effective device for treating landfill leachate membrane concentrate. Utility Model Content

[0005] In order to improve the treatment efficiency of landfill leachate membrane concentrate, the present application provides a device for treating landfill leachate membrane concentrate wastewater.

[0006] The present application provides a device for treating landfill leachate membrane concentrate wastewater using the following technical solutions:

[0007] A device for treating wastewater from landfill leachate membrane concentrate, comprising:

[0008] A reaction tower, wherein the reaction tower is connected to a water inlet pipe and a water outlet pipe for transporting waste liquid, the water inlet pipe and the water outlet pipe are both connected to the interior of the reaction tower, the water inlet pipe is provided with a water inlet valve, and the water outlet pipe is provided with a water outlet valve;

[0009] a dosing assembly, the dosing assembly being connected to the water inlet pipe and being used to add persulfate into the water inlet pipe;

[0010] A gas injection component, which is connected to the reaction tower and is used to deliver oxygen into the reaction tower;

[0011] A micro-electrolysis component is located inside the reaction tower and is used to oxidize ions in the wastewater.

[0012] By adopting the above technical solution, when treating the waste liquid, the waste liquid is transported to the reaction tower through the water inlet pipe, and the dosing component is started at the same time, so that the persulfate and the waste liquid are mixed and enter the reaction tower together. Under the action of the micro-electrolysis component, the persulfate ion loses electrons and reacts with water to generate hydrogen peroxide free radicals HO2 with strong oxidizing properties. - , then the hydrogen peroxide radical activates the persulfate ions to generate sulfate radicals, followed by substitution, addition, electron transfer and other processes between the sulfate radicals and the hydrogen peroxide radicals and the refractory organic macromolecules, so that the refractory organic compounds are converted into non-toxic small molecules and inorganic substances with very small molecular weight, such as CO2 and H2O. In addition to oxidizing organic matter, the hydrogen peroxide radicals will further react with the persulfate ions to generate sulfate radicals to degrade pollutants. During the operation of the device, the micro-electrolysis reaction and the persulfate advanced oxidation reaction are combined and promoted with each other, which improves the effluent quality while accelerating the reaction rate, thereby more effectively treating the landfill leachate membrane concentrate.

[0013] Optionally, the dosing component includes a ferrous sulfate metering dosing component for adding ferrous sulfate into the water inlet pipe and a sodium persulfate metering dosing component for adding sodium persulfate into the water inlet pipe. The reaction tower is also connected to a pH regulator for adjusting the pH value inside the reaction tower.

[0014] By adopting the above technical solution, sodium persulfate and ferrous sulfate are mixed with wastewater and enter the reaction tower together with the wastewater. At the same time, the pH value of the wastewater in the reaction tower is regulated to make the pH value of the wastewater in the reaction tower acidic. In the acidic environment, sodium persulfate produces sulfate radicals and hydroxyl radicals under the catalysis of ferrous ions, and the sulfate radicals and hydroxyl radicals synergistically degrade organic matter in the wastewater.

[0015] Optionally, a stirring element is provided in the water inlet pipe, and the stirring element is used to stir the waste liquid to which ferrous sulfate and sodium persulfate are added.

[0016] By adopting the above technical solution, the stirring element stirs the waste liquid to which ferrous sulfate and sodium persulfate are added, so that the ferrous sulfate and sodium persulfate are mixed with the waste liquid more evenly.

[0017] Optionally, the stirring member includes a stirring shaft fixedly connected to the inner wall of the water inlet pipe, the extension direction of the stirring shaft is parallel to the extension direction of the water inlet pipe, and the outer periphery of the stirring shaft is provided with stirring blades rotatably connected to the stirring shaft.

[0018] By adopting the above technical solution, when the waste liquid added with ferrous sulfate and sodium persulfate passes through the stirring element, the water flow contacts the stirring blades, and the stirring blades rotate under the action of the water flow, thereby stirring the waste liquid.

[0019] Optionally, the reaction tower is connected to a gas injection component, and the gas injection component is used to transport oxygen into the reaction tower; the micro-electrolysis component is a carbon-iron material layer.

[0020] By adopting the above technical solution, Fe 3+ and OH - The Fe(OH)3 colloid formed by ferrous sulfate is positively charged and can further adsorb and flocculate pollutants in the water; at the same time, under acidic aerobic conditions, iron loses two electrons at the anode to form Fe 2+ , oxidize organic matter in wastewater.

[0021] Optionally, the reaction tower is further connected to a reflux component, and the reflux component is used to allow the waste liquid at the top of the reaction tower to continuously reflux to the bottom of the reaction tower.

[0022] By adopting the above technical solution, during the operation of the reaction tower, the reflux component causes the wastewater at the top of the reaction tower to continuously flow back to the bottom of the reaction tower, allowing it to circulate multiple times; the reflux process can effectively stir the wastewater and the reagent, allowing the wastewater and the reagent to mix evenly and allowing the wastewater and the reagent to fully react; at the same time, the reflux process can dilute the high-concentration difficult-to-degrade wastewater entering the bottom of the reaction tower, avoiding uneven water quality in the upper and lower parts of the tank, and reducing the processing pressure of the reaction tower.

[0023] Optionally, the reflux component includes a reflux pipe, one end of the reflux pipe is connected to the top of the reaction tower, and the other end of the reflux pipe is connected to the bottom of the reaction tower, and a circulation pump is provided on the reflux pipe.

[0024] By adopting the above technical solution, during the operation of the reaction tower, the circulation pump is turned on, and the circulation pump causes the wastewater at the top of the reaction tower to continuously flow back to the bottom of the reaction tower through the reflux pipe.

[0025] Optionally, the gas injection component includes an aeration pipe communicated with the interior of the reaction tower, and an end of the aeration pipe away from the reaction tower is connected to an aeration fan.

[0026] By adopting the above technical solution, during the operation of the device, the aerator continuously injects oxygen into the reaction tower through the aeration pipe. By filling the reaction tower with dissolved oxygen, the metabolic process of aerobic microorganisms is accelerated, the decomposition of organic matter is accelerated, and the efficiency of wastewater treatment is improved.

[0027] Optionally, the end of the aeration pipe away from the aeration fan is located inside the reaction tower, and a plurality of air distribution pipes are arranged along the extension direction of the aeration pipe at the end of the aeration pipe located inside the reaction tower, and the aeration pipe is connected to the interior of the reaction tower through the air distribution pipes.

[0028] By adopting the above technical solution and setting up multiple gas distribution pipes, it is beneficial to evenly distribute the gas, so that the aerator can inject oxygen into the reaction tower more evenly.

[0029] Optionally, the aeration tube is a microporous aeration tube, and the inner diameter of the micropores of the aeration tube is 9 to 11 mm.

[0030] By adopting the above technical solution, the bubbles generated by the microporous aeration tube are smaller, which can make the bubbles stay in the water longer, thereby providing more oxygen to dissolve in the water, promoting the biodegradation process in the water body, and reducing the emission of pollutants.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. During the operation of the device, the micro-electrolysis reaction and the persulfate advanced oxidation reaction are combined and promoted, which improves the effluent quality while accelerating the reaction rate, thereby more effectively treating the landfill leachate membrane concentrate;

[0033] 2. The stirring element stirs the waste liquid with ferrous sulfate and sodium persulfate added, so that the ferrous sulfate and sodium persulfate are mixed with the waste liquid more evenly;

[0034] 3. Sodium persulfate and ferrous sulfate are mixed with wastewater and enter the reaction tower together with the wastewater. At the same time, the pH value of the wastewater in the reaction tower is adjusted to make the pH value of the wastewater in the reaction tower acidic. In the acidic environment, sodium persulfate produces sulfate free radicals and hydroxyl free radicals under the catalysis of ferrous ions. The sulfate free radicals and hydroxyl free radicals synergistically degrade organic matter in the wastewater; BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0036] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0037] Figure 3 This is a schematic structural diagram of the water inlet pipe in an embodiment of the present application;

[0038] Figure 4 This is a schematic structural diagram of a gas injection component in an embodiment of the present application;

[0039] In the figure, 1. reaction tower; 11. packing layer spacer; 2. water inlet pipe; 21. water inlet valve; 22. water distribution pipe; 23. stirring element; 231. stirring shaft; 232. stirring fan; 3. water outlet pipe; 31. water outlet valve; 4. dosing component; 41. ferrous sulfate metering and dosing element; 42. sodium persulfate metering and dosing element; 5. gas injection element; 51. aeration pipe; 52. aeration fan; 53. gas distribution pipe; 6. micro-electrolysis element; 7. pH regulator; 8. reflux element; 81. reflux pipe; 82. circulation pump; 9. composite material layer. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-3 This application is described in further detail.

[0041] The present application discloses a device for treating wastewater from landfill leachate membrane concentrate. Figure 1 A device for treating landfill leachate membrane concentrate wastewater includes a reaction tower 1 having a height-to-diameter ratio of 3:1. The reaction tower 1 is connected to a pH regulator 7 for adjusting the pH value inside the reaction tower 1, as well as an inlet pipe 2 and an outlet pipe 3 for transporting landfill leachate membrane concentrate. The inlet pipe 2 and the outlet pipe 3 are both connected to the interior of the reaction tower 1. The inlet pipe 2 is provided with an inlet valve 21, and the outlet pipe 3 is provided with an outlet valve 31. A dosing assembly 4 is provided on the inlet pipe 2. The dosing assembly 4 includes a ferrous sulfate metering dosing element 41 for adding ferrous sulfate to the inlet pipe 2 and a sodium persulfate metering dosing element 42 for adding sodium persulfate to the inlet pipe 2. The reaction tower 1 is also connected to a gas injection element 5 for transporting oxygen into the reaction tower 1. A micro-electrolysis element 6 is provided inside the reaction tower 1. In the embodiment of the present application, the micro-electrolysis element 6 is a carbon-iron material layer.

[0042] When treating the waste liquid, the water inlet valve 21, the sodium persulfate metering and dosing device 42, and the ferrous sulfate metering and dosing device 41 are opened to allow the sodium persulfate, ferrous sulfate, and wastewater to enter the reaction tower 1 together. At the same time, the pH value of the wastewater in the reaction tower 1 is regulated. Due to the potential difference between the iron and carbon in the iron-carbon filler layer, countless tiny primary cells are formed on its surface and the wastewater. Under acidic aerobic conditions, the persulfate ions lose electrons at the anode and react with water to generate hydrogen peroxide free radicals HO2 with strong oxidizing properties. - , then the hydrogen peroxide radical activates the persulfate ions to generate sulfate radicals, and then the sulfate radicals and hydrogen peroxide radicals undergo substitution, addition, electron transfer and other processes with the refractory organic macromolecules, converting the refractory organic compounds into non-toxic small molecules and inorganic substances with very small molecular weight, such as CO2 and H2O. In addition to oxidizing organic matter, the hydrogen peroxide radical will further react with the persulfate ions to generate sulfate radicals to degrade pollutants.

[0043] During the operation of the device, the micro-electrolysis reaction and the persulfate advanced oxidation reaction are combined and promoted, which improves the effluent quality and accelerates the reaction rate, thereby more effectively treating the landfill leachate membrane concentrate. At the same time, Fe 3+ and OH - The Fe(OH)3 colloid formed by ferrous sulfate is positively charged and can further adsorb and flocculate pollutants in the water. Under acidic aerobic conditions, the iron in the iron-carbon filler layer loses two electrons at the anode to form Fe 2+, which can oxidize organic matter in wastewater. At the same time, under acidic aerobic conditions, the surface of the iron-carbon filler reacts to produce hydroxyl radicals. Sodium persulfate also produces hydroxyl radicals and sulfate radicals under the catalysis of ferrous ions. Sulfate radicals and hydroxyl radicals synergistically degrade organic matter in wastewater.

[0044] Reference Figure 1 and Figure 2 A stirring member 23 is provided within the water inlet pipe 2. The stirring member 23 includes a stirring shaft 231 fixedly connected to the inner wall of the water inlet pipe 2. The stirring shaft 231 extends in a direction parallel to the extension direction of the water inlet pipe 2. The stirring shaft 231 is sheathed with stirring blades 232 rotatably connected to the stirring shaft 231. When the waste liquid containing ferrous sulfate and sodium persulfate passes through the stirring member 23, the water flow contacts the stirring blades 232. The stirring blades 232 rotate under the action of the water flow, thereby stirring the waste liquid and mixing the ferrous sulfate and sodium persulfate with the waste liquid more evenly.

[0045] Reference Figure 1 The iron-carbon filler layer includes a plurality of iron-carbon fillers, which are elliptical in shape. The iron-carbon fillers are stacked in parallel and filled in the iron-carbon filler layer. The iron-carbon filler in the embodiment of the present application has an iron content of 70-80%, a carbon content of 5-15%, an alloy catalyst amount of 3-7%, a porosity of 60-70%, a bulk density of 1.2-1.4 tons / m3, a diameter of 3-5 cm, and a total weight of 1.2-1.8 tons. The thickness of the iron-carbon filler layer is about 15-25 cm, and the total volume accounts for 12%-20% of the effective volume of the reaction tower 1. The thickness of the iron-carbon filler layer and the total volume ratio make the filler layer thickness moderate, and it is not easy for the filler to break and the aeration to be uneven. At the same time, the iron-carbon fillers are stacked in parallel and filled in the iron-carbon filler layer, so that the iron-carbon fillers are stably stacked and easy to operate.

[0046] Reference Figure 1 The reaction tower 1 is connected to a reflux component 8, which includes a reflux pipe 81. One end of the reflux pipe 81 is connected to the top of the reaction tower 1, and the other end of the reflux pipe 81 is connected to the bottom of the reaction tower 1. A circulation pump 82 is provided on the reflux pipe 81. During the operation of the reaction tower 1, the circulation pump 82 is turned on, and the circulation pump 82 allows the wastewater at the top of the reaction tower 1 to continuously flow back to the bottom of the reaction tower 1 through the reflux pipe 81. During the reflux process, the wastewater and the reagent can be effectively stirred, so that the wastewater and the reagent are evenly mixed and can fully react with the reagent. At the same time, during the reflux process, the high-concentration difficult-to-degrade wastewater entering the bottom of the reaction tower 1 can be diluted to avoid uneven water quality in the upper and lower parts of the tank, thereby reducing the processing pressure of the reaction tower 1.

[0047] Reference Figure 1 and Figure 3One end of the water inlet pipe 2 is located inside the reaction tower 1, and a plurality of water distribution pipes 22 are arranged along the extension direction of the water inlet pipe 2 at the end of the water inlet pipe 2 located inside the reaction tower 1. The water inlet pipe 2 is connected with the interior of the reaction tower 1 through the water distribution pipe 22; the arrangement of the branched water distribution pipe 22 is conducive to uniform water distribution, so that the wastewater to be treated enters the reaction tower 1 uniformly and stably, preventing large fluctuations in water inlet from impacting and damaging the reaction tower 1.

[0048] Reference Figure 1 and Figure 4 The gas injection component 5 includes an aeration pipe 51 connected to the interior of the reaction tower 1. The aeration pipe 51 is a microporous aeration pipe 51. The inner diameter of the micropores of the aeration pipe 51 is 9 to 11 mm. The end of the aeration pipe 51 away from the reaction tower 1 is connected to the aeration fan 52. The end of the aeration pipe 51 away from the aeration fan 52 is located inside the reaction tower 1. A plurality of air distribution pipes 53 are arranged along the extension direction of the aeration pipe 51 at the end of the aeration pipe 51 located inside the reaction tower 1. The aeration pipe 51 is connected to the interior of the reaction tower 1 through the air distribution pipes 53. During the operation of the device, the aerator is connected to the interior of the reaction tower 1. The aeration pipe 51 continuously injects oxygen into the reaction tower 1. The arrangement of multiple air distribution pipes 53 facilitates uniform air distribution, allowing the aerator to more evenly inject oxygen into the reaction tower 1. By filling the reaction tower 1 with dissolved oxygen, the metabolic process of aerobic microorganisms is accelerated, the decomposition of organic matter is accelerated, and the efficiency of wastewater treatment is improved. At the same time, the bubbles generated by the microporous aeration pipe 51 are smaller, which can make the bubbles stay in the water for a longer time, thereby providing more oxygen to dissolve in the water, promoting the biodegradation process in the water body, and reducing the emission of pollutants.

[0049] Reference Figure 1 , a composite material layer 9 is also provided in the reaction tower 1, and a filler layer spacing net 11 is provided between the composite material layer 9 and the carbon-iron material layer, and the filler layer spacing net 11 is made of PE mesh material. The composite material layer 9 and the carbon-iron material layer can effectively intercept suspended matter, and adsorption and biofilm biochemical reactions mainly occur in the composite filler layer, which can further degrade the soluble inorganic ions and soluble organic matter in the membrane concentrate; in addition, the selection of PE mesh material as the filler layer spacing net 11 can effectively ensure the hydraulic retention time of sewage in the filler area. The polyethylene material has stable performance and corrosion resistance to cope with various types of water quality sewage. The pore size of the filler layer spacing net 11 is 5-6mm, which can effectively intercept reaction precipitates and impurities, and ensure that the supernatant enters the composite filler layer smoothly.

[0050] The implementation principle of the device for treating landfill leachate membrane concentrate wastewater in the embodiment of the present application is as follows: when the device is working, the sodium persulfate metering and dosing component 42, the ferrous sulfate metering and dosing component 41 and the water inlet valve 21 are opened, so that the sodium persulfate, ferrous sulfate and wastewater enter the reaction tower 1 for reaction, and the pH of the liquid in the reaction tower 1 is adjusted to a specified acidic range by the pH regulator 7. Then, the water inlet valve 21 is closed, and the aeration fan 52 is turned on to introduce oxygen into the reaction tower 1, so that the wastewater reacts in the reaction tower 1; countless tiny galvanic cells are formed on the surface of the iron-carbon filler layer and the wastewater. Under acidic aerobic conditions, iron loses two electrons at the anode to form Fe 2+ , oxidize organic matter in wastewater; at the same time, the iron-carbon micro-electrolysis reaction activates persulfate, and the persulfate ion loses electrons at the anode and reacts with H2O to generate highly oxidizing hydrogen peroxide free radicals HO2 - , HO2 - While oxidizing organic matter, it also further reacts with persulfate to generate sulfate radical SO4 - Degrade pollutants; in addition, under acidic conditions, sodium persulfate produces sulfate radicals under the catalysis of ferrous ions, and the surface of the iron-carbon filler layer reacts to produce hydroxyl radicals. Sulfate radicals and hydroxyl radicals synergistically degrade organic matter in the wastewater.

[0051] This device creatively combines an iron-carbon microelectrolysis reaction with a persulfate advanced oxidation reaction to treat difficult-to-degrade wastewater. The coupling of the microelectrolysis and advanced oxidation processes significantly improves wastewater treatment efficiency. The reactions within the system mutually promote each other, generating sulfate and hydroxyl radicals that oxidize and degrade organic matter, significantly accelerating the reaction rate.

[0052] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A device for treating wastewater from landfill leachate membrane concentrate, characterized in that: include: A reaction tower (1), wherein the reaction tower (1) is connected to a water inlet pipe (2) and a water outlet pipe (3) for transporting waste liquid, the water inlet pipe (2) and the water outlet pipe (3) are both in communication with the interior of the reaction tower (1), the water inlet pipe (2) is provided with a water inlet valve (21), and the water outlet pipe (3) is provided with a water outlet valve (31); A dosing component (4), the dosing component (4) being in communication with the water inlet pipe (2) and being used to add persulfate into the water inlet pipe (2); A micro-electrolysis component (6) is located inside the reaction tower (1), and the micro-electrolysis component (6) is used to oxidize ions in the wastewater.

2. The device for treating wastewater from landfill leachate membrane concentrate according to claim 1, characterized in that: The dosing assembly (4) comprises a ferrous sulfate metering dosing element (41) for adding ferrous sulfate into the water inlet pipe (2) and a sodium persulfate metering dosing element (42) for adding sodium persulfate into the water inlet pipe (2). The reaction tower (1) is also connected to a pH regulator (7) for regulating the pH value inside the reaction tower (1).

3. The device for treating wastewater from landfill leachate membrane concentrate according to claim 2, characterized in that: A stirring member (23) is provided in the water inlet pipe (2), and the stirring member (23) is used to stir the waste liquid to which ferrous sulfate and sodium persulfate are added.

4. The device for treating wastewater from landfill leachate membrane concentrate according to claim 3, characterized in that: The stirring member (23) comprises a stirring shaft (231) fixedly connected to the inner wall of the water inlet pipe (2), the extension direction of the stirring shaft (231) being parallel to the extension direction of the water inlet pipe (2), and a stirring blade (232) rotatably connected to the stirring shaft (231) being sleeved on the outer periphery of the stirring shaft (231).

5. The device for treating wastewater from landfill leachate membrane concentrate according to claim 2, characterized in that: The reaction tower (1) is connected to a gas injection component (5), and the gas injection component (5) is used to transport oxygen into the reaction tower (1); the micro-electrolysis component (6) is a carbon-iron material layer.

6. The device for treating wastewater from landfill leachate membrane concentrate according to claim 1, characterized in that: The reaction tower (1) is further connected to a reflux member (8), and the reflux member (8) is used to allow the waste liquid at the top of the reaction tower (1) to continuously reflux to the bottom of the reaction tower (1).

7. The device for treating wastewater from landfill leachate membrane concentrate according to claim 6, characterized in that: The reflux member (8) comprises a reflux pipe (81), one end of the reflux pipe (81) is connected to the top of the reaction tower (1), and the other end of the reflux pipe (81) is connected to the bottom of the reaction tower (1). A circulation pump (82) is provided on the reflux pipe (81).

8. The device for treating wastewater from landfill leachate membrane concentrate according to claim 5, characterized in that: The gas injection component (5) comprises an aeration pipe (51) in communication with the interior of the reaction tower (1), and an aeration fan (52) is connected to one end of the aeration pipe (51) away from the reaction tower (1).

9. The device for treating wastewater from landfill leachate membrane concentrate according to claim 8, characterized in that: One end of the aeration pipe (51) away from the aeration blower (52) is located inside the reaction tower (1), and a plurality of air distribution pipes (53) are arranged along the extension direction of the aeration pipe (51) at the end of the aeration pipe (51) located inside the reaction tower (1). The aeration pipe (51) is connected to the interior of the reaction tower (1) through the air distribution pipes (53).

10. The device for treating wastewater from landfill leachate membrane concentrate according to claim 8, characterized in that: The aeration tube (51) is a microporous aeration tube (51), and the inner diameter of the micropores of the aeration tube (51) is 9-11 mm.

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