A reverse osmosis device for treating landfill leachate

Abstract

This utility model relates to the field of landfill leachate treatment technology, specifically a reverse osmosis device for treating landfill leachate. The reverse osmosis device includes a support frame, a drive mechanism mounted on the support frame, and a reverse osmosis mechanism connected to the drive mechanism. The reverse osmosis mechanism includes a treatment tank and a riser pipe fixed to one end of the treatment tank. A first outlet pipe and a second outlet pipe are connected to the other end of the treatment tank. The treatment tank includes a tank body, which is a hollow cavity structure with openings at both ends. Two fillers are arranged within this cavity structure. A partition is fixed to both ends of each filler, and a leachate flow channel is formed within each filler. Sloping walls are provided on both sides of each leachate flow channel. This reverse osmosis device for treating landfill leachate prolongs the flow time of the leachate within it, allowing the leachate more opportunities to be filtered by the quartz sand filter bag, effectively removing suspended solids and colloidal particles and other solid impurities from the leachate.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate treatment technology, specifically a reverse osmosis device for treating landfill leachate. Background Technology

[0002] Landfill leachate is a complex, high-concentration organic wastewater that seeps out of landfills during the landfilling process due to compaction, microbial fermentation, rainwater leaching, and infiltration of surface and groundwater. Reverse osmosis (RO) systems are used to treat landfill leachate. The reverse osmosis membrane in the RO system effectively intercepts dissolved salts and organic matter with a molecular weight greater than 100, while allowing water molecules to pass through.

[0003] Existing reverse osmosis (RO) devices for treating landfill leachate have complex structures and unreasonable designs. The flow trajectory of leachate within the device is relatively simple, typically involving direct passage through the tank. This results in short flow time and limited contact time between the leachate and the filtration structure, leading to poor filtration efficiency. Furthermore, existing RO devices are usually integrated structures, making disassembly and maintenance difficult and inconvenient. Therefore, the inventors have improved the structure of the reverse osmosis device. Utility Model Content

[0004] The purpose of this invention is to provide a reverse osmosis device for treating landfill leachate. This reverse osmosis device has a simple structure and reasonable design, prolongs the flow time of leachate within it, allowing the leachate to be filtered by the quartz sand filter bag more often, effectively removing suspended solids and colloidal particles and other solid impurities from the leachate. This allows solid impurities in the leachate to be filtered twice, improving the filtration effect of solid impurities. It also increases the contact area with the leachate, making the contact between the leachate and the quartz sand filter bag tighter and the filtration effect better. Furthermore, it facilitates the subsequent disassembly and cleaning of the treatment tank, making the later maintenance of the treatment tank more convenient. This invention solves the problems mentioned in the above-mentioned technical background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reverse osmosis device for treating landfill leachate. The reverse osmosis device includes a support frame, a drive mechanism and a reverse osmosis mechanism connected to the drive mechanism are arranged on the support frame, and the reverse osmosis mechanism includes a treatment tank and a riser pipe fixed to one end of the treatment tank. A first outlet pipe and a second outlet pipe are connected to the other end of the treatment tank. The treatment tank includes a tank body, which is a hollow cavity structure with openings at both ends. Two fillers are arranged inside the cavity structure. A partition is fixed at both ends of each filler, and a leachate flow channel is formed in each filler. Inclined walls are arranged on both sides of each leachate flow channel, and multiple quartz sand filter bags are fixed on each inclined wall. Multiple guide plates are arranged between the two fillers, and the multiple guide plates are respectively fixed to both sides of the tank cavity. A reverse osmosis membrane is installed below each guide plate.

[0006] Preferably, it also includes a PLC controller, which is electrically connected to the drive mechanism and the reverse osmosis mechanism respectively, and controls the operation of the drive mechanism and the reverse osmosis mechanism.

[0007] Preferably, the drive mechanism includes a motor and a liquid input pipe connected to the output end of the motor. The end of the riser pipe away from the treatment tank is connected to the motor. An addition tank is connected to the liquid input pipe. The addition tank is fixed on the mounting base. The mounting base is fixed on the support frame. The liquid input pipe has two openings. One opening is connected to the addition tank, and the other opening is used to connect to the input end of the landfill leachate.

[0008] Preferably, multiple baffles are provided, and all baffles are fixed to the inner wall of the tank cavity. Each baffle is provided with a liquid outlet hole for slowly discharging leachate.

[0009] Preferably, multiple quartz sand filter bags are arranged in a crisscross pattern within the leachate flow channel. Each quartz sand filter bag has an outer wall with an outward protruding design to increase the contact area with the leachate.

[0010] Preferably, multiple guide plates are inclined at an angle between 15° and 25°, and each guide plate has a liquid distribution hole at its end. The multiple inclined guide plates extend the flow time of the leachate in the tank cavity, and the multiple reverse osmosis membranes allow the leachate to undergo multiple filtrations, resulting in better filtration. The liquid distribution hole is used to slowly discharge the leachate.

[0011] Preferably, the second outlet pipe includes a main pipe and a pipe head connected to the main pipe. A solenoid valve is installed on the main pipe, and an expansion pipe is provided at the end of the main pipe away from the first outlet pipe. A valve is installed on the expansion pipe. A channel for conveying liquid can be expanded through the expansion pipe to improve the conveying efficiency.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides a reverse osmosis device for treating landfill leachate. The reverse osmosis device includes a support frame, a drive mechanism and a reverse osmosis mechanism connected to the drive mechanism, and has a simple overall structure and reasonable design. The reverse osmosis mechanism includes a treatment tank and a riser pipe fixed to one end of the treatment tank. The end of the riser pipe away from the treatment tank is connected to a motor. A first outlet pipe and a second outlet pipe are connected to the other end of the treatment tank. By setting two fillers in the tank, and each filler having an inclined leachate flow channel, the flow time of the leachate in the tank is extended, giving the leachate more opportunities to be filtered by the quartz sand filter bag, thus improving the filtration effect and effectively removing suspended solids and colloidal particles and other solid impurities from the leachate. The setting of two fillers allows solid impurities in the leachate to be filtered twice, improving the filtration effect of solid impurities and making it suitable for widespread use.

[0014] 2. In this utility model, multiple quartz sand filter bags are provided on both sides of the leachate flow channel, and the quartz sand filter bags on both sides are distributed in a cross pattern. The quartz sand filter bags have outward protruding outer walls, which increases the contact area with the leachate, making the contact between the leachate and the quartz sand filter bags closer and the filtration effect better.

[0015] 3. The treatment tank, riser pipe, first outlet pipe and second outlet pipe in this utility model are installed in a modular manner, which makes it easy to disassemble and clean the treatment tank separately, making the later maintenance of the treatment tank more convenient and improving the maintenance experience. Attached Figure Description

[0016] Figure 1 This is the front view of the present utility model;

[0017] Figure 2 This is a structural diagram of the present utility model;

[0018] Figure 3 This is a schematic diagram of the reverse osmosis mechanism of this utility model;

[0019] Figure 4 This is a cross-sectional view of the tank body of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of A in the middle;

[0021] Figure 6 This utility model Figure 4 A magnified view of B in the middle.

[0022] The reference numerals and names in the figure are as follows: 1. Support frame; 2. Drive mechanism; 21. Motor; 22. Liquid input pipe; 23. Addition tank; 24. Mounting base; 3. Reverse osmosis mechanism; 31. Treatment tank; 311. Tank body; 312. Packing material; 3121. Leachate flow channel; 3122. Sloping wall; 313. Baffle plate; 3131. Liquid outlet; 314. Quartz sand filter bag; 3141. Outer wall; 315. Guide plate; 3151. Liquid distribution hole; 316. Reverse osmosis membrane; 32. Rising pipe; 33. First liquid outlet pipe; 34. Second liquid outlet pipe; 341. Main pipe; 342. Pipe head; 343. Solenoid valve; 344. Expansion pipe; 345. Valve; 4. PLC controller. Detailed Implementation

[0023] 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.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of 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 or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0026] Please see Figure 1 The present invention provides an embodiment of a reverse osmosis device for treating landfill leachate. The reverse osmosis device includes a support frame 1, a drive mechanism 2 and a reverse osmosis mechanism 3 connected to the drive mechanism 2, and a PLC controller 4. The PLC controller 4 is electrically connected to the drive mechanism 2 and the reverse osmosis mechanism 3 respectively, and controls the operation of the drive mechanism 2 and the reverse osmosis mechanism 3. In this embodiment, the model of the PLC controller 4 is EX3G-70KC-60MT.

[0027] Please see Figure 2 The drive mechanism 2 includes a motor 21 and a liquid input pipe 22 connected to the output end of the motor 21. An addition tank 23 is connected to the liquid input pipe 22 and is fixed to a mounting base 24, which in turn is fixed to a support frame 1. The addition tank 23 is used to contain clean water or other liquids for preliminary treatment of landfill leachate. In this embodiment, the addition tank 23 contains clean water to dilute the landfill leachate, thus facilitating filtration. The liquid input pipe 22 has two openings: one opening connects to the addition tank 23, and the other opening connects to the landfill... The inlet of the leachate is connected to the reverse osmosis mechanism 3, which includes a treatment tank 31 and a riser pipe 32 fixed to one end of the treatment tank 31. The end of the riser pipe 32 away from the treatment tank 31 is connected to the motor 21. The other end of the treatment tank 31 is connected to a first outlet pipe 33 and a second outlet pipe 34. The treatment tank 31, the riser pipe 32, the first outlet pipe 33 and the second outlet pipe 34 are installed in a modular manner. The installation method is existing technology and will not be described in detail here. Therefore, it is convenient to disassemble and clean the treatment tank 31 separately, making the later maintenance more convenient.

[0028] Please see Figure 3 The second outlet pipe 34 includes a main pipe 341 and a pipe head 342 connected to the main pipe 341. A solenoid valve 343 is installed on the main pipe 341, and an expansion pipe 344 is also provided at the end of the main pipe 341 away from the first outlet pipe 33. A valve 345 is installed on the expansion pipe 344. A channel for conveying liquid can be expanded through the expansion pipe 344 to improve the conveying efficiency.

[0029] Please see Figure 4 The processing tank 31 includes a tank body 311, which is a hollow cavity structure with openings at both ends. Two fillers 312 are provided inside the cavity structure. A partition 313 is fixed at both ends of each filler 312. Multiple partitions 313 are provided, and multiple partitions 313 are fixed to the inner wall of the cavity of the tank body 311.

[0030] Please see Figure 5Each filler 312 has a leachate channel 3121, and each leachate channel 3121 has inclined walls 3122 on both sides. Multiple quartz sand filter bags 314 are fixed on each inclined wall 3122. Therefore, multiple quartz sand filter bags 314 are arranged in the leachate channel 3121. The multiple quartz sand filter bags 314 in the leachate channel 3121 are arranged crosswise. Each quartz sand filter bag 314 has an outer wall 3141. The outer wall 3141 is designed to protrude outward, thereby increasing the contact area with the leachate.

[0031] Please see Figure 6 Each partition 313 is provided with a liquid outlet 3131 for slowly discharging leachate. Multiple guide plates 315 are provided between the two packing bodies 312. The multiple guide plates 315 are all inclined, with an inclination angle between 15° and 25°. Each guide plate 315 has a liquid distribution hole 3151 at its end. The multiple guide plates 315 are respectively fixed to both sides of the cavity of the tank body 311, and a reverse osmosis membrane 316 is installed below each guide plate 315. The multiple inclined guide plates 315 prolong the flow time of leachate in the cavity of the tank body 311, and the multiple reverse osmosis membranes 316 allow the leachate to undergo multiple filtrations, resulting in better filtration. The liquid distribution hole 3151 is used to slowly discharge leachate.

[0032] Working principle: Please refer to the following again. Figures 1 to 6 In the operation of this utility model, the motor 21 draws the leachate into the liquid input pipe 22. At the same time, clean water is released from the addition tank 23 and enters the riser pipe 32 along with the leachate to dilute it. The diluted leachate enters the first leachate flow channel 3121 from the highest outlet hole 3131, flows slowly along the inclined wall 3122, and contacts multiple outer walls 3141. It is treated by multiple quartz sand filter bags 314 to intercept suspended solids and colloidal particles and other solid impurities. Then it enters the area between the two packing bodies 312 and flows slowly on multiple guide plates 315. After repeated filtration by multiple reverse osmosis membranes 316, the filtration effect is improved. Then it flows into the second leachate flow channel 3121, where suspended solids and colloidal particles are filtered again, so that the liquid that finally enters the first outlet pipe 33 and the second outlet pipe 34 meets the discharge standards.

[0033] 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 reverse osmosis device for treating landfill leachate comprising a support frame (1), characterised in that: The support frame (1) is provided with a drive mechanism (2) and a reverse osmosis mechanism (3) connected to the drive mechanism (2). The reverse osmosis mechanism (3) includes a treatment tank (31) and a riser pipe (32) fixed to one end of the treatment tank (31). The other end of the treatment tank (31) is connected to a first outlet pipe (33) and a second outlet pipe (34). The treatment tank (31) includes a tank body (311), which is a hollow cavity structure with openings at both ends. Two fillers (312) are provided inside the cavity structure. Each filler (312) has a partition (313) fixed at both ends. Each filler (312) has a leachate channel (3121) formed inside. Each leachate channel (3121) has inclined walls (3122) on both sides. Multiple quartz sand filter bags (314) are fixed on each inclined wall (3122). Multiple guide plates (315) are provided between the two filling bodies (312), and the multiple guide plates (315) are respectively fixed on both sides of the cavity of the tank body (311), and a reverse osmosis membrane (316) is installed below each guide plate (315).

2. The reverse osmosis device for treating landfill leachate according to claim 1, characterized in that: It also includes a PLC controller (4), which is electrically connected to the drive mechanism (2) and the reverse osmosis mechanism (3) respectively, and controls the operation of the drive mechanism (2) and the reverse osmosis mechanism (3).

3. The reverse osmosis device for treating landfill leachate according to claim 1, characterized in that: The drive mechanism (2) includes a motor (21) and a liquid input pipe (22) connected to the output end of the motor (21). The end of the riser pipe (32) away from the treatment tank (31) is connected to the motor (21). An addition tank (23) is connected to the liquid input pipe (22). The addition tank (23) is fixed on the mounting base (24). The mounting base (24) is fixed on the support frame (1).

4. The reverse osmosis device for treating landfill leachate according to claim 1, wherein: Multiple partitions (313) are provided, and multiple partitions (313) are fixed to the inner wall of the cavity of the tank (311). Each partition (313) is provided with a liquid outlet hole (3131).

5. The reverse osmosis device for treating landfill leachate according to claim 1, characterized in that: The multiple quartz sand filter bags (314) in the leachate flow channel (3121) are arranged crosswise, and each quartz sand filter bag (314) has an outer wall (3141).

6. The reverse osmosis device for treating landfill leachate according to claim 1, wherein: The multiple guide plates (315) are all inclined, with an inclination angle between 15° and 25°, and each guide plate (315) has a liquid dispensing hole (3151) at its end.

7. The reverse osmosis device for treating landfill leachate according to claim 1, wherein: The second outlet pipe (34) includes a main pipe (341) and a pipe head (342) connected to the main pipe (341). A solenoid valve (343) is installed on the main pipe (341), and an expansion pipe (344) is provided at the end of the main pipe (341) away from the first outlet pipe (33). A valve (345) is installed on the expansion pipe (344).

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