Efficient landfill leachate full-quantification combination device

Abstract

The utility model discloses an efficient landfill leachate full-quantification combination device which comprises a scraper evaporator, shells are installed on the two sides of the scraper evaporator, and a plurality of sets of heat exchange pipes which are arranged at equal intervals are installed on the inner side of the scraper evaporator. Steam is transmitted to the inner side of the steam inlet branch pipe through the heat exchange pipe and the heating structure, the steam inlet branch pipe is used for shunting, the steam is transmitted to the inner side of the steam distribution pipe through the steam inlet branch pipe, the steam is guided by the steam distribution pipe to be transmitted to the inner side of the heat exchange pipe, and gas is guided by the heat exchange pipe to be transmitted to the steam distribution pipe at the output end. The steam distribution pipe transmits steam into the heat exchange pipes, the heat exchange pipes transmit the steam and condensate water to the inner sides of the condensate water outlet branch pipes, the condensate water outlet branch pipes transmit the steam to the inner sides of the drain valves, the heat exchange efficiency is improved through the multiple sets of heat exchange pipes, and the functions of evaporative crystallization, mother liquor concentration and even mother liquor drying can be achieved. The evaporation process can be continuously, stably and efficiently carried out.

Description

Technical Field

[0001] This utility model relates to the field of full-volume treatment technology of landfill leachate, specifically a high-efficiency combined device for full-volume treatment of landfill leachate. Background Technology

[0002] Landfill leachate is characterized by complex pollutant composition, large fluctuations in water quality, and high concentrations of organic matter, ammonia nitrogen, heavy metal ions, and salts. Currently, landfill leachate treatment primarily employs a combined process of "biochemical treatment + membrane concentration and separation + evaporation and crystallization" to achieve full-scale treatment. This means that after concentration and separation, the purified wastewater meets discharge standards, pollutants are concentrated and reduced, until a small amount of mixed, dried solid waste containing various pollutants and salts is formed. This solid waste must be sealed and landfilled on-site or handed over to a qualified unit for final disposal.

[0003] The "biochemical + membrane concentration + evaporation crystallization" approach represents the development trend of landfill leachate treatment technology and is currently a relatively representative advanced technology. This process frequently encounters two main problems in similar landfill leachate projects: improving membrane antifouling resistance (MBR and DTRO); and addressing scaling and clogging issues during evaporation crystallization, as well as the drying of the mother liquor. To address these issues, we propose a highly efficient, fully integrated landfill leachate treatment system.

[0004] The existing high-efficiency landfill leachate treatment system lacks internal components that improve heat exchange efficiency, thus affecting heat exchange efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency landfill leachate full-volume combined device to solve the technical problem mentioned in the background art of the lack of internal heat exchange efficiency, which affects the heat exchange efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency landfill leachate full-volume combined device, comprising: a scraper evaporator, with shells installed on both sides of the scraper evaporator, and several sets of equidistantly arranged heat exchange tubes installed on the inner side of the scraper evaporator, the heat exchange tubes being located inside the shells, gas distribution pipes installed at both ends of the heat exchange tubes, a steam inlet branch pipe installed at the top of the gas distribution pipe at the input end of the heat exchange tubes, the steam inlet branch pipe penetrating the top of the shells, a steam inlet main pipe installed at the top of the steam inlet branch pipes, a condensate outlet branch pipe installed at the bottom of the gas distribution pipe at the output end of the heat exchange tubes, the condensate outlet branch pipe penetrating the bottom wall of the shells, a drain valve installed inside the condensate outlet branch pipe, and a condensate outlet main pipe installed at the bottom end of the drain valve;

[0007] A demister is installed through the top wall of the scraper evaporator, and an air outlet pipe is installed at the top of the demister.

[0008] Preferably, a first concentrate inlet pipe is installed through the inner side of the scraper evaporator, and an input interface is installed at one end of the first concentrate inlet pipe.

[0009] Preferably, a number of equally spaced nozzles are installed at the bottom of the first concentrate inlet pipe.

[0010] Preferably, a bidirectional lead screw is installed on the inner side of the scraper evaporator, and a servo motor is installed at one end of the bidirectional lead screw. The servo motor is installed on one side of the outer wall of the scraper evaporator, and the bidirectional lead screw is located below the concentrate inlet pipe.

[0011] Preferably, an internal threaded ring is movably installed on the outer side of the bidirectional lead screw via a thread, and a nylon chain scraper plate is installed at the bottom of the internal threaded ring. The inner side of the nylon chain scraper plate is provided with several scraping holes, and the heat exchange tube passes through the inner side of the scraping holes.

[0012] Preferably, a mixing tank is installed through the bottom wall of the scraper evaporator.

[0013] Preferably, a second concentrate inlet pipe is installed on one side of the mixing tank, a concentrate outlet pipe is installed on the other side of the mixing tank, and a mother liquor outlet pipe is installed at the bottom of the mixing tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the installation of heat exchange tubes, uses a heating structure to transmit steam to the inner side of a steam inlet branch pipe. The steam inlet branch pipe is used for diversion, and the steam inlet branch pipe transmits steam to the inner side of a gas distribution pipe. The gas distribution pipe guides the steam to the inner side of the heat exchange tubes respectively. The heat exchange tubes guide the gas to the gas distribution pipe at the output end, and the gas distribution pipe transmits steam to the inside of the heat exchange tubes. The heat exchange tubes transmit steam and condensate to the inner side of a condensate outlet branch pipe, and the condensate outlet branch pipe transmits steam to the inner side of a steam trap. By using several sets of heat exchange tubes to improve heat exchange efficiency, it can realize the functions of evaporation crystallization, mother liquor concentration, and even mother liquor drying, and can achieve continuous, stable, and efficient evaporation process.

[0016] This utility model features a bidirectional lead screw. A servo motor drives the output end of the bidirectional lead screw to rotate, which in turn moves the outer inner threaded rings. The inner threaded rings move closer together, causing the bottom nylon chain scraper plate to move. The nylon chain scraper plate has several scraping holes on its inner side, and the heat exchange tube guides the movement of the nylon chain scraper plate, ensuring its smooth and linear movement. During the movement of the nylon chain scraper plate, the adhesive material on the outside of the heat exchange tube is scraped off, and the adhesive material is simultaneously guided towards the mixing tank. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the nylon chain scraper plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the heat exchange tube structure of this utility model.

[0021] In the diagram: 1. Scraper evaporator; 2. First concentrate inlet pipe; 3. Nozzle; 4. Input interface; 5. Demister; 6. Gas outlet pipe; 7. Two-way lead screw; 8. Internal threaded ring; 9. Nylon chain scraper blade; 10. Scraping hole; 11. Housing; 12. Steam inlet branch pipe; 13. Steam inlet main pipe; 14. Gas distribution pipe; 15. Heat exchanger pipe; 16. Steam trap; 17. Condensate outlet main pipe; 18. Mixing tank; 19. Second concentrate inlet pipe; 20. Concentrate outlet pipe; 21. Mother liquor outlet pipe; 22. Servo motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A high-efficiency landfill leachate full-volume combined device includes: a scraper evaporator 1, with a shell 11 installed on both sides of the scraper evaporator 1, and several sets of equidistantly arranged heat exchange tubes 15 installed on the inner side of the scraper evaporator 1. The heat exchange tubes 15 are located inside the shell 11, and air distribution pipes 14 are installed at both ends of the heat exchange tubes 15. A steam inlet branch pipe 12 is installed at the top of the air distribution pipe 14 at the input end of the heat exchange tubes 15. The steam inlet branch pipe 12 penetrates the top of the shell 11, and a steam inlet main pipe 13 is installed at the top of the steam inlet branch pipe 12. A condensate outlet branch pipe is installed at the bottom of the air distribution pipe 14 at the output end of the heat exchange tubes 15. The condensate outlet branch pipe penetrates the bottom wall of the shell 11, and a drain valve 16 is installed inside the condensate outlet branch pipe. A condensate outlet main pipe 17 is installed at the bottom end of the drain valve 16.

[0026] One end of the steam inlet main pipe 13 is connected to the heating structure. The heating structure transmits steam to the inside of the steam inlet branch pipe 12. The steam inlet branch pipe 12 is used for diversion. The steam inlet branch pipe 12 transmits steam to the inside of the gas distribution pipe 14. The gas distribution pipe 14 guides the steam to the inside of the heat exchange tube 15 respectively. The heat exchange tube 15 guides the gas to the gas distribution pipe 14 at the output end. The gas distribution pipe 14 transmits steam to the inside of the heat exchange tube 15. The heat exchange tube 15 transmits steam and condensate to the inside of the condensate outlet branch pipe. The condensate outlet branch pipe transmits steam to the inside of the steam trap 16. The heat exchange efficiency is improved by several sets of heat exchange tubes 15. The steam trap 16 opens to control the transmission of steam and condensate to the inside of the condensate outlet main pipe 17. The condensate outlet main pipe 17 guides the condensate to the inside of the heating equipment, which facilitates the circulation of liquid in the device. It can realize the functions of evaporation and crystallization, mother liquor concentration and even mother liquor drying, and can realize the continuous, stable and efficient operation of the evaporation process.

[0027] The scraper evaporator 1 is fixed to the shells 11 on both sides. The heat exchange tube 15 is installed inside the scraper evaporator 1. The heat exchange tube 15 operates smoothly and guides the water vapor to be transported. The water vapor heats the concentrate at high temperature, and the water in the concentrate evaporates, causing the liquid to concentrate and crystallize.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A demister 5 is installed through the top wall of the scraper evaporator 1, and an air outlet pipe 6 is installed at the top of the demister 5.

[0029] The heat exchange tube 15 transmits steam, which heats and evaporates the concentrate during the steam transmission process. The resulting odor is simply treated by the demister 5 and then connected to the deodorization device through the outlet pipe 6 in the demister 5 for further treatment. The odor is then discharged in compliance with standards after treatment.

[0030] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The inner side of the scraper evaporator 1 is provided with a first concentrated liquid inlet pipe 2, one end of the first concentrated liquid inlet pipe 2 is provided with an input interface 4, and the bottom of the first concentrated liquid inlet pipe 2 is provided with a number of equally spaced nozzles 3.

[0031] The scraper evaporator 1 is fixed to the inner first concentrated liquid inlet pipe 2 to ensure the stability of the first concentrated liquid inlet pipe 2. One end of the first concentrated liquid inlet pipe 2 is fixedly connected to the input interface 4, and one end of the input interface 4 is connected to the water supply system. The first concentrated liquid inlet pipe 2 transmits the condensate and water to the inside of the nozzle 3. The nozzle 3 sprays the condensate and water out. The concentrated liquid and water are sprayed more evenly through the nozzle 3. The concentrated liquid passes downward through the nylon chain scraper plate 9 and the heat exchange tube 15 inside the scraper evaporator 1.

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The inner side of the scraper evaporator 1 is equipped with a bidirectional lead screw 7. One end of the bidirectional lead screw 7 is equipped with a servo motor 22. The servo motor 22 is installed on the outer wall of one side of the scraper evaporator 1. The bidirectional lead screw 7 is located below the first concentrate inlet pipe 2. An internal threaded ring 8 is installed on the outer side of the bidirectional lead screw 7 through a thread. A nylon chain scraper plate 9 is installed at the bottom of the internal threaded ring 8. A plurality of scraping holes 10 are opened on the inner side of the nylon chain scraper plate 9. The heat exchange tube 15 passes through the inner side of the scraping holes 10.

[0033] The servo motor 22 drives the output end bidirectional lead screw 7 to rotate. The rotation of the bidirectional lead screw 7 drives the outer inner thread ring 8 to move. The inner thread rings 8 move closer to each other, and the inner thread rings 8 drive the bottom nylon chain scraper plate 9 to move. There are several scraping holes 10 on the inner side of the nylon chain scraper plate 9. The heat exchange tube 15 guides the nylon chain scraper plate 9 to move, ensuring that the nylon chain scraper plate 9 moves smoothly and linearly. During the movement of the nylon chain scraper plate 9, the adhesive on the outside of the heat exchange tube 15 is scraped off, and the adhesive is guided to move towards the mixing tank 18.

[0034] A mixing tank 18 is installed through the bottom wall of the scraper evaporator 1. A second concentrate inlet pipe 19 is installed on one side of the mixing tank 18, a concentrate outlet pipe 20 is installed on the other side of the mixing tank 18, and a mother liquor outlet pipe 21 is installed at the bottom of the mixing tank 18.

[0035] The concentrated liquid in the mixing tank 18 is composed of the second concentrated liquid inlet pipe 19 and the adhesive produced by steam heating of the concentrated liquid in the scraper evaporator 1. The concentrated liquid outlet pipe 20 of the mixing tank 18 is connected to the first concentrated liquid inlet pipe 2 outside the scraper evaporator 1 via a circulation pump. The mother liquor in the mixing tank 18 is evaporated multiple times by the scraper evaporator 1, making its conductivity and pollutant concentration increasingly higher. It then enters the high-efficiency atmospheric pressure low-temperature crystallization drying unit for further processing through the mother liquor outlet pipe 21.

[0036] Working principle: The scraper evaporator 1 has a fixed inner first concentrated liquid inlet pipe 2 to ensure its stability. One end of the first concentrated liquid inlet pipe 2 is fixedly connected to the input interface 4, and the other end of the input interface 4 is connected to the water supply system. The first concentrated liquid inlet pipe 2 transmits the condensate and water to the inside of the nozzle 3. The nozzle 3 sprays the condensate and water out, making the concentrated liquid and water spray more even. The concentrated liquid passes downward through the nylon chain scraper plate 9 and the heat exchange tube 15 inside the scraper evaporator 1. One end of the steam inlet main pipe 13 is connected to the heating structure, which transmits steam to the inside of the steam inlet branch pipe 12. The steam inlet branch pipe 12 is used for diversion, transmitting steam to the inside of the gas distribution pipe 14. The gas distribution pipe 14 guides the steam to the inside of the heat exchange tube 15, and the heat exchange tube 15 guides the gas to the gas distribution at the output end. Pipe 14, the steam distribution pipe 14 transmits steam to the inside of the condensate outlet branch pipe, the condensate outlet branch pipe transmits steam to the inside of the steam trap 16, the steam trap 16 opens to control the transmission of steam and condensate to the inside of the condensate outlet main pipe 17, the condensate outlet main pipe 17 guides the condensate back into the heating equipment, facilitating the circulation of liquid in the device, the servo motor 22 drives the output end bidirectional lead screw 7 to rotate, the bidirectional lead screw 7 rotates to drive the outer inner thread ring 8 to move, the inner thread rings 8 move closer to each other, the inner thread rings 8 drive the bottom nylon chain scraper plate 9 to move, the nylon chain scraper plate 9 has several scraping holes 10 on the inside, the heat exchange tube 15 guides the nylon chain scraper plate 9 to move, ensuring the nylon chain scraper plate 9 moves smoothly and linearly, the nylon chain scraper plate 9 scrapes off the adhesive on the outside of the heat exchange tube 15 during the movement, and at the same time guides the adhesive to move towards the mixing tank 18.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency combined device for fully quantifying landfill leachate, characterized in that, include: A scraper evaporator (1) is provided with a shell (11) on both sides. Several sets of heat exchange tubes (15) are arranged at equal intervals on the inner side of the scraper evaporator (1). The heat exchange tubes (15) are located inside the shell (11). Gas distribution pipes (14) are installed at both ends of the heat exchange tubes (15). A steam inlet branch pipe (12) is installed at the top of the gas distribution pipe (14) at the input end of the heat exchange tubes (15). The steam inlet branch pipe (12) penetrates the top of the shell (11). A steam inlet main pipe (13) is installed at the top of the steam inlet branch pipe (12). A condensate outlet branch pipe is installed at the bottom of the gas distribution pipe (14) at the output end of the heat exchange tubes (15). The condensate outlet branch pipe penetrates the bottom wall of the shell (11). A drain valve (16) is installed inside the condensate outlet branch pipe. A condensate outlet main pipe (17) is installed at the bottom end of the drain valve (16). A demister (5) is installed through the top wall of the scraper evaporator (1), and an air outlet pipe (6) is installed at the top of the demister (5).

2. The high-efficiency landfill leachate full-volume combined device according to claim 1, characterized in that: The inner side of the scraper evaporator (1) is provided with a first concentrate inlet pipe (2), and an input interface (4) is installed at one end of the first concentrate inlet pipe (2).

3. The high-efficiency landfill leachate full-volume combined device according to claim 2, characterized in that: The bottom of the first concentrate inlet pipe (2) is equipped with several sets of equally spaced nozzles (3).

4. The high-efficiency landfill leachate full-volume combined device according to claim 1, characterized in that: A bidirectional lead screw (7) is installed on the inner side of the scraper evaporator (1). A servo motor (22) is installed at one end of the bidirectional lead screw (7). The servo motor (22) is installed on the outer wall of one side of the scraper evaporator (1). The bidirectional lead screw (7) is located below the first concentrate inlet pipe (2).

5. The high-efficiency landfill leachate full-volume combined device according to claim 4, characterized in that: An internal threaded ring (8) is installed on the outer side of the bidirectional lead screw (7) via a threaded connection. A nylon chain scraper plate (9) is installed at the bottom of the internal threaded ring (8). Several scraping holes (10) are opened on the inner side of the nylon chain scraper plate (9), and the heat exchange tube (15) passes through the inner side of the scraping holes (10).

6. The high-efficiency landfill leachate full-volume combined device according to claim 1, characterized in that: The bottom wall of the scraper evaporator (1) is through which a mixing tank (18) is installed.

7. The high-efficiency landfill leachate full-volume combined device according to claim 6, characterized in that: A second concentrate inlet pipe (19) is installed on one side of the mixing tank (18), a concentrate outlet pipe (20) is installed on the other side of the mixing tank (18), and a mother liquor outlet pipe (21) is installed at the bottom of the mixing tank (18).

Images