Landfill leachate ultrafiltration treatment device

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a landfill leachate ultrafiltration treatment device which comprises an ultrafiltration membrane component, a reaction device is mounted on the left side of the ultrafiltration membrane component, mixing devices are mounted on the top surface and inside the reaction device, a coarse filtration device is connected to the left side of the reaction device, and a secondary filtration device is connected to the right side of the coarse filtration device. The rough filtering device comprises a connecting structure and a filtering and collecting structure, the filtering and collecting structure is installed inside and at the top of the connecting structure, the filtering and collecting structure comprises an electric push rod, the output end of the electric push rod is connected with a connecting frame, and the end, away from the output end of the electric push rod, of the connecting frame is connected with a filtering plate; a mounting plate is mounted at the bottom of the left side of the filter plate, and a collecting box is mounted on the top surface of the mounting plate. According to the ultrafiltration treatment device for the landfill leachate, large impurities can be filtered and collected by utilizing the filter plate and the collection box, so that subsequent filter membrane treatment on the leachate is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an ultrafiltration treatment device for landfill leachate. Background Technology

[0002] Landfill leachate is a highly concentrated (high salinity, high COD) and complex wastewater, and its treatment remains a challenge for the water treatment industry both domestically and internationally. Landfill leachate primarily contains large amounts of organic pollutants, including both biodegradable and non-biodegradable organic matter.

[0003] To increase throughput and facilitate cleaning, current landfill leachate ultrafiltration treatment devices generally use curtain-type ultrafiltration membranes. However, these devices typically require shutdown for backwashing, which significantly impacts treatment efficiency.

[0004] As disclosed in Chinese Patent CN212559569U, a landfill leachate ultrafiltration treatment device is designed to be put into normal use by installing a fixed frame in a suitable position, ensuring that the inlet is on the side of the produced water. During normal use, the entire ultrafiltration device, composed of several curtain-type ultrafiltration membranes, performs ultrafiltration treatment. When backwashing is required, two motors can be controlled to operate via the switch panel. The two motors drive two lead screws, which in turn move two sliding plates up and down, thereby moving two sealing covers up and down. The two sealing covers are first adjusted to correspond to the position of one of the curtain-type ultrafiltration membranes. Then, the submersible pump is controlled via the switch panel to operate. The submersible pump delivers the ultrafiltration produced water through the inlet hose to the inside of the two sealing covers of the sealing assembly to backwash the individual curtain-type ultrafiltration membrane. The backwashed liquid is discharged from the treatment device through the outlet hose. The backwashing process does not affect the normal water production of the remaining curtain-type ultrafiltration membranes. Thus, ultrafiltration and backwashing can be carried out simultaneously without stopping the machine for backwashing, ensuring treatment efficiency and improving practicality.

[0005] However, in the existing technology, when treating landfill leachate, it is usually necessary to pre-treat it to filter out larger particles of waste in the liquid, thereby ensuring the effectiveness of the membrane treatment.

[0006] Therefore, we urgently need to provide an ultrafiltration treatment device for landfill leachate. Utility Model Content

[0007] The purpose of this utility model is to provide an ultrafiltration treatment device for landfill leachate, so as to solve the problem mentioned in the background art that the prior art usually needs to pre-treat landfill leachate to filter out larger particulate waste in the liquid, thereby ensuring the effect of the filter membrane treatment.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an ultrafiltration treatment device for landfill leachate, comprising an ultrafiltration membrane assembly, a reaction device installed on the left side of the ultrafiltration membrane assembly, a mixing device installed on the top surface and inside of the reaction device, and a coarse filtration device connected to the left side of the reaction device.

[0009] The coarse filtration device includes a connecting structure and a filter collection structure, wherein the filter collection structure is installed inside and on top of the connecting structure.

[0010] The filter collection structure includes an electric push rod, the output end of which is connected to a connecting frame, and the end of the connecting frame away from the output end of the electric push rod is connected to a filter plate. An mounting plate is installed on the bottom left side of the filter plate, and a collection box is installed on the top surface of the mounting plate.

[0011] Preferably, the connection structure includes a coarse filter box, an inlet pipe is fixedly installed in the middle of the left side of the coarse filter box, a movable cover is installed on the top surface of the coarse filter box, a screw pump is connected to the middle of the right side of the coarse filter box near the bottom, and a connecting pipe is connected to the output end of the screw pump.

[0012] Preferably, the bottom of the electric push rod is detachably connected to the top surface of the coarse filter box; the right side of the filter plate is slidably connected to the inner wall of the right side of the rectangular hole on the top surface of the coarse filter box; the movable cover is hinged to the top surface of the coarse filter box and installed inside the left side of the rectangular hole on the top surface of the coarse filter box; and the bottom surface of the collection box is engaged with the convex block on the top surface of the mounting plate. The filter plate has a solid frame with multiple layers of filter screens installed inside, and the sides of the collection box are all made of filter screen material.

[0013] Preferably, the reaction apparatus includes a reaction chamber, a feeding pipe is installed on the top surface of the reaction chamber near the right end, a feeding hopper is fixedly installed at the top of the feeding pipe, and a liquid outlet pipe is installed on the middle right side of the reaction chamber near the bottom.

[0014] Preferably, a circular hole is opened in the middle of the top surface of the reaction chamber near the left end, and the hole is fixedly connected to the outer surface of the connecting pipe away from the screw pump. The end of the liquid outlet pipe away from the reaction chamber is connected to the input end of the ultrafiltration membrane assembly.

[0015] Preferably, the mixing device includes an asynchronous motor, the output end of which is connected to a transmission component, a stirring shaft is installed inside the transmission component, and a paddle is installed at the bottom end of the stirring shaft.

[0016] Preferably, the bottom surface of the asynchronous motor is detachably connected to the top surface of the reaction chamber, the outer surface of the stirring shaft is connected to the interior of the reaction chamber top surface through a bearing near the top, and the bottom surface of the impeller is slidably connected to the inner bottom surface of the reaction chamber. The transmission component is a worm gear with a worm wheel meshing on its outer surface. The worm gear is connected to the output end of the asynchronous motor, and the middle of the worm wheel is connected to the top of the outer surface of the stirring shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This landfill leachate ultrafiltration treatment device, through the setting of a coarse filtration device, can filter and collect larger impurities using a filter plate and a collection box, which is beneficial for subsequent membrane treatment of leachate.

[0019] 2. This landfill leachate ultrafiltration treatment device, through the setting of reaction device and mixing device, facilitates the flocculation reaction of leachate, collects and treats floating matter and impurities in the liquid, and prevents impurities from clogging the filter membrane and affecting the treatment effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 This is an enlarged view of the internal structure of the coarse filtration device of this utility model;

[0022] Figure 3 This is an enlarged view of the filtration and collection structure of the coarse filtration device of this utility model;

[0023] Figure 4 This is an enlarged view of the reaction apparatus of this utility model;

[0024] Figure 5 This is an enlarged view of the hybrid structure of this utility model.

[0025] In the diagram: 1. Ultrafiltration membrane module; 101. Coarse filter box; 102. Inlet pipe; 103. Movable cover; 104. Screw pump; 105. Connecting pipe; 106. Electric push rod; 107. Connecting frame; 108. Filter plate; 109. Mounting plate; 110. Collection box; 201. Reaction chamber; 202. Feed pipe; 203. Feed hopper; 204. Outlet pipe; 301. Asynchronous motor; 302. Transmission component; 303. Stirring shaft; 304. Impeller. Detailed Implementation

[0026] 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.

[0027] Example 1:

[0028] In existing technologies for treating landfill leachate, pretreatment is typically required to filter out larger particles of waste, thus ensuring the effectiveness of the membrane filtration. Please refer to [the relevant documentation / reference]. Figures 1-5 The embodiment provides an ultrafiltration treatment device for landfill leachate, which can effectively improve the treatment effect of subsequent filter membranes on leachate. The landfill leachate ultrafiltration treatment device includes an ultrafiltration membrane assembly 1, a reaction device installed on the left side of the ultrafiltration membrane assembly 1, a mixing device installed on the top surface and inside of the reaction device, and a coarse filter device connected to the left side of the reaction device.

[0029] The coarse filtration device includes a connecting structure and a filtration collection structure, with the filtration collection structure installed inside and on top of the connecting structure. The filtration collection structure includes an electric push rod 106, with a connecting frame 107 connected to the output end of the electric push rod 106. A filter plate 108 is connected to the end of the connecting frame 107 furthest from the output end of the electric push rod 106. An mounting plate 109 is installed on the bottom left side of the filter plate 108, and a collection box 110 is installed on the top surface of the mounting plate 109. The connecting structure includes a coarse filter box 101, with an inlet pipe 102 fixedly installed in the middle left side of the coarse filter box 101. A movable cover 103 is installed on the top surface of the coarse filter box 101. A screw pump 104 is connected to the middle right side of the coarse filter box 101 near the bottom, and a connecting pipe 105 is connected to the output end of the screw pump 104.

[0030] The bottom of the electric push rod 106 is detachably connected to the top surface of the coarse filter box 101. The right side of the filter plate 108 is slidably connected to the inner wall of the right side of the rectangular hole on the top surface of the coarse filter box 101. The movable cover 103 is hinged to the top surface of the coarse filter box 101 and installed inside the left side of the rectangular hole on the top surface of the coarse filter box 101. The bottom surface of the collection box 110 is engaged with the convex block on the top surface of the mounting plate 109.

[0031] By setting up a coarse filtration device, larger impurities can be filtered and collected using the filter plate 108 and the collection box 110, which is beneficial for subsequent membrane treatment of the leachate.

[0032] After the leachate enters the coarse filter box 101 through the inlet pipe 102, multiple filter plates 108 filter and intercept larger impurities in the liquid, and the collection box 110 collects the larger impurities. Then, the movable cover 103 is hinged to the coarse filter box 101 to open it. The electric push rod 106 is activated to drive the connecting frame 107 and the filter plates 108 to rise and fall, which facilitates the cleaning of the filter plates 108. The mounting plate 109 is fixedly connected to the bottom of the filter plates 108, and the collection box 110 is snapped into the top surface of the mounting plate 109, which facilitates the disassembly of the collection box 110 and the centralized treatment of larger impurities.

[0033] Example 2:

[0034] Based on Implementation 1, the existing technology still has the problem that impurities such as floating matter in the liquid can clog the filter membrane during the filtration process, affecting the liquid treatment effect. Please refer to... Figures 1-5 This embodiment provides an ultrafiltration treatment device for landfill leachate, which can effectively solve the problem of floating matter and fine impurities in the liquid. The device includes a reaction unit comprising a reaction chamber 201. A feeding pipe 202 is installed on the top surface of the reaction chamber 201 near the right end, and a feeding hopper 203 is fixedly installed at the top of the feeding pipe 202. An outlet pipe 204 is installed on the right side of the reaction chamber 201 near the bottom. A circular hole is formed on the top surface of the reaction chamber 201 near the left end, and the hole is fixedly connected to the outer surface of the end of the connecting pipe 105 away from the screw pump 104. The end of the outlet pipe 204 away from the reaction chamber 201 is connected to the input end of the ultrafiltration membrane assembly 1.

[0035] The mixing device includes an asynchronous motor 301, with a transmission component 302 connected to the output end of the asynchronous motor 301. A stirring shaft 303 is installed inside the transmission component 302, and a blade 304 is installed at the bottom end of the stirring shaft 303. The bottom surface of the asynchronous motor 301 is detachably connected to the top surface of the reaction chamber 201. The outer surface of the stirring shaft 303 is connected to the center of the top surface of the reaction chamber 201 via a bearing near the top. The bottom surface of the blade 304 is slidably connected to the bottom surface inside the reaction chamber 201.

[0036] The setup of the reaction and mixing devices facilitates flocculation of the leachate, collects and treats floating matter and impurities in the liquid, and prevents impurities from clogging the filter membrane and affecting the treatment effect.

[0037] After the leachate is coarsely filtered by the coarse filtration device, the screw pump 104 is started and the coarsely filtered liquid is transported into the reaction tank 201 through the connecting pipe 105. Flocculants, neutralizing agents and other reactants are added into the reaction tank 201 through the feeding pipe 202 and the feeding hopper 203. The asynchronous motor 301 is started to drive the transmission component 302. The output end of the asynchronous motor 301 drives the worm to rotate. The outer surface of the worm meshes with the worm wheel. The inside of the worm wheel is connected to the stirring shaft 303, thereby driving the stirring shaft 303 and the impeller 304 to stir the mixture, so that it is fully mixed and reacted. This effectively concentrates the impurities in the liquid, making it easier to collect and treat. It prevents impurities from entering the ultrafiltration membrane module 1 and causing blockage of the filter membrane inside the ultrafiltration membrane module 1, which would affect the performance of the ultrafiltration membrane module 1.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A landfill leachate ultrafiltration treatment device, comprising an ultrafiltration membrane module (1), characterized in that: A reaction device is installed on the left side of the ultrafiltration membrane module (1), a mixing device is installed on the top surface and inside of the reaction device, and a coarse filtration device is connected to the left side of the reaction device; The coarse filtration device includes a connecting structure and a filter collection structure, wherein the filter collection structure is installed inside and on top of the connecting structure. The filter collection structure includes an electric push rod (106), the output end of which is connected to a connecting frame (107), and the end of the connecting frame (107) away from the output end of the electric push rod (106) is connected to a filter plate (108). An installation plate (109) is installed on the bottom left side of the filter plate (108), and a collection box (110) is installed on the top surface of the installation plate (109).

2. The landfill leachate ultrafiltration treatment device according to claim 1, characterized in that: The connection structure includes a coarse filter box (101), an inlet pipe (102) is fixedly installed on the middle left side of the coarse filter box (101), a movable cover (103) is installed on the top surface of the coarse filter box (101), a screw pump (104) is connected to the middle right side of the coarse filter box (101) near the bottom, and a connecting pipe (105) is connected to the output end of the screw pump (104).

3. The landfill leachate ultrafiltration treatment device according to claim 2, characterized in that: The bottom of the electric push rod (106) is detachably connected to the top surface of the coarse filter box (101). The right side of the filter plate (108) is slidably connected to the inner wall of the right side of the rectangular hole on the top surface of the coarse filter box (101). The movable cover (103) is hinged to the top surface of the coarse filter box (101) and installed inside the left side of the rectangular hole on the top surface of the coarse filter box (101). The bottom surface of the collection box (110) is engaged with the convex block on the top surface of the mounting plate (109).

4. The landfill leachate ultrafiltration treatment device according to claim 1, characterized in that: The reaction apparatus includes a reaction chamber (201), a feeding pipe (202) is installed on the top surface of the reaction chamber (201) near the right end, a feeding hopper (203) is fixedly installed at the top of the feeding pipe (202), and a liquid outlet pipe (204) is installed on the middle right side of the reaction chamber (201) near the bottom.

5. The landfill leachate ultrafiltration treatment device according to claim 4, characterized in that: The reaction chamber (201) has a circular hole in the middle of the top surface near the left end, which is fixedly connected to the outer surface of the connecting pipe (105) away from the screw pump (104). The outlet pipe (204) is connected to the input end of the ultrafiltration membrane assembly (1) away from the reaction chamber (201).

6. The landfill leachate ultrafiltration treatment device according to claim 1, characterized in that: The mixing device includes an asynchronous motor (301), the output end of which is connected to a transmission component (302), a stirring shaft (303) is installed inside the transmission component (302), and a paddle (304) is installed at the bottom end of the stirring shaft (303).

7. The landfill leachate ultrafiltration treatment device according to claim 6, characterized in that: The bottom surface of the asynchronous motor (301) is detachably connected to the top surface of the reaction chamber (201). The outer surface of the stirring shaft (303) is connected to the inner part of the top surface of the reaction chamber (201) through a bearing near the top. The bottom surface of the impeller (304) is slidably connected to the inner bottom surface of the reaction chamber (201).

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