Sewage treatment device for linen washing

Abstract

The utility model discloses a sewage treatment device for linen washing, which comprises a box body, the box body is of a multi-layer structure consisting of a filter tank I, a filter tank II and a filter tank III, and a filter bin I, a filter bin II and a filter bin III are uniformly arranged in the filter tank I; the filter box assembly is fixed to one end of the box body through a support, and a filter element formed by combining a supporting frame and multiple layers of fiber filter cloth is arranged in the filter box assembly; ultrasonic generators are uniformly mounted on the outer walls of the box body on two sides of the filter tank II. According to the sewage treatment device for linen washing, the sewage treatment efficiency and the water quality purification effect are remarkably improved, the treatment cost is reduced, the maintenance process is optimized, and the service life of the device is prolonged through technical innovation of a multi-layer filter tank structure, a double-interception mechanism, an ultrasonic technology, a microorganism funnel, an activated carbon filter element, modular design and the like. And the method has remarkable economic benefits and social benefits.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a wastewater treatment device for linen washing. Background Technology

[0002] The wastewater generated during linen washing contains a large amount of suspended solids, organic matter, and microorganisms. Traditional wastewater treatment methods typically employ a single filtration or sedimentation process. For example, common methods such as gravity sedimentation and sand filtration can remove suspended solids to some extent, but their treatment efficiency is low, and they cannot effectively remove organic matter and microorganisms, resulting in treated water that fails to meet discharge standards. Furthermore, traditional methods use simple equipment structures, lack multi-stage filtration and advanced treatment capabilities, and are ill-suited to the complex and varied composition of wastewater, leading to unstable treatment results and high maintenance costs. Utility Model Content

[0003] The purpose of this invention is to provide a wastewater treatment device for linen washing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wastewater treatment device for linen washing, comprising...

[0005] The housing has a multi-layered structure consisting of filter tank one, filter tank two, and filter tank three. Filter tank one is evenly provided with filter chamber one, filter chamber two, and filter chamber three. Filter chamber one, filter chamber two, and filter chamber three are respectively provided with dredging net one, dredging net two, and dredging net three. Filter screen one, filter screen two, and filter screen three are respectively provided inside filter tank one, filter tank two, and filter tank three on one side of dredging net one, dredging net two, and dredging net three.

[0006] The filter box assembly is fixed to one end of the box body by a bracket, and the top of the filter box assembly is provided with a flow guide hood that is connected to the transition port of filter tank one. The output pipe of the filter box assembly extends into the interior of filter tank two. The interior of the filter box assembly is provided with a filter element composed of a support frame and a multi-layer fiber filter cloth.

[0007] Ultrasonic generators are evenly installed on the outer walls of the boxes on both sides of the filter tank two. The filter tank two and the filter tank three are connected by a conduit, and the interior of the filter tank three is equipped with an activated carbon filter element.

[0008] Furthermore, a microbial funnel is provided at one end of the box body via a fixing clamp, and the output end of the microbial funnel extends into the interior of the second filter tank. An inlet connected to the first filter tank is provided on the side wall of the box body above the microbial funnel.

[0009] Furthermore, at the bottom of the other end of the housing, there is a water outlet that is connected to the filter tank. The inner side of the water outlet is fixed with a sealing cover plate by bolts. The sealing cover plate is provided with a water outlet pipe extending to the inner side of the water outlet. A plug can be detachably installed on the water outlet pipe.

[0010] Furthermore, the mesh size of filter screen one, filter screen two, and filter screen three decreases in that order, and the side walls on both sides of filter pool one are provided with insertion grooves for fixing filter screen one, filter screen two, and filter screen three.

[0011] Furthermore, each of the three salvage nets includes a fixed frame and a mesh panel, with the mesh panel installed inside the fixed frame, and the mesh size of the three salvage nets decreasing in that order.

[0012] Furthermore, each of the fixed frames is provided with a support plate on both sides, and the distance between the two support plates is greater than the width of the filter tank.

[0013] Furthermore, support blocks are provided at the four corners of the inner side of the filter box assembly. The support blocks are all L-shaped structures, and the filter element can be detachably installed on the inner side of the four support blocks.

[0014] This utility model relates to a wastewater treatment device for linen washing, which has significant advantages over the prior art, as detailed below:

[0015] 1. Multi-layer filter structure improves filtration efficiency:

[0016] This device employs a multi-layered structure consisting of filter tank one, filter tank two, and filter tank three, enabling the step-by-step filtration of impurities in wastewater. The evenly distributed filter chambers one, two, and three within filter tank one further refine the filtration process, ensuring that suspended solids and impurities of varying particle sizes are effectively removed as wastewater passes through each chamber. This multi-layered filter structure significantly improves filtration efficiency, ensuring cleaner treated water.

[0017] 2. The combined design of the dredging net and filter net improves the interception effect:

[0018] Inside filter tank one, three separate scooping nets (net 1, net 2, and net 3) and corresponding filter nets (net 1, net 2, and net 3) form a dual interception mechanism. The scooping nets primarily intercept larger suspended solids, while the filter nets further intercept finer particles. The mesh size of filter nets one, two, and three decreases progressively, refining the filtration at each stage to ensure a comprehensive improvement in interception effectiveness.

[0019] 3. Ultrasonic generators enhance wastewater treatment efficiency:

[0020] Ultrasonic generators, evenly installed on the outer walls of the tanks on both sides of the filter bed, produce high-frequency vibrations that effectively decompose organic pollutants and bacteria in the wastewater, thus improving wastewater treatment efficiency. The application of ultrasonic technology not only enhances water purification efficiency but also reduces the amount of chemical reagents used, lowering treatment costs.

[0021] 4. Microbial funnels optimize the biodegradation process:

[0022] The microbial funnel, secured by a clamp, extends its output into the interior of filter two, ensuring even distribution of microbial inoculum throughout the wastewater. Ultrasonic waves promote microbial activity and accelerate the biodegradation of organic pollutants. This design not only improves biological treatment efficiency but also reduces sludge production and optimizes the overall treatment effect.

[0023] 5. Activated carbon filter cartridges enhance water purification efficiency:

[0024] The activated carbon filter element inside the third filter bed effectively adsorbs residual organic matter, odors, and pigments in wastewater, further enhancing water purification. The strong adsorption capacity of activated carbon ensures that the treated water meets higher standards.

[0025] 6. Modular design facilitates maintenance and replacement:

[0026] The filter box assembly, filter element, retrieval net, and filter screen of this device all adopt a modular design, which facilitates disassembly and replacement. The filter element can be detachably installed inside the support block, which facilitates regular replacement and maintenance, extends the service life of the device, and reduces maintenance costs.

[0027] 7. The outlet design ensures stable water quality:

[0028] The water outlet located at the bottom of the other end of the tank, with its encapsulated cover and outlet pipe design, ensures the stability and controllability of the water quality. The removable plug facilitates cleaning and maintenance of the outlet, further guaranteeing the treatment effect.

[0029] In summary, this utility model of wastewater treatment device for linen washing significantly improves wastewater treatment efficiency and water purification effect, reduces treatment costs, and optimizes maintenance process through technological innovations such as multi-layer filter structure, dual interception mechanism, ultrasonic technology, microbial funnel, activated carbon filter element, and modular design, resulting in significant economic and social benefits. Attached Figure Description

[0030] Figure 1 This is a side view of the structure of this utility model;

[0031] Figure 2 This is a top view of the structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the filter box assembly structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the salvage net structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the three-end face structure of the filter tank of this utility model;

[0035] In the diagram: 1. Box body; 2. Filter tank three; 3. Filter tank two; 4. Filter tank one; 401. Filter compartment one; 402. Filter compartment two; 403. Filter compartment three; 5. Fixing clamp; 6. Microbial funnel; 7. Retrieval net one; 8. Retrieval net two; 9. Retrieval net three; 10. Filter screen one; 11. Filter screen two; 12. Filter screen three; 13. Flow guide hood; 14. Filter box assembly; 1401. Support block; 15. Filter element; 1501. Support frame; 1502. Multi-layer fiber filter cloth; 16. Encapsulation cover plate; 17. Water outlet pipe; 18. Water outlet; 19. Ultrasonic generator; 20. Transition port; 21. Insertion groove; 22. Water inlet; 23. Support plate; 24. Fixing frame; 25. Mesh plate; 26. Activated carbon filter element. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] Please see Figure 1-5 One embodiment of this utility model provides: a wastewater treatment device for linen washing, comprising...

[0038] Box 1 is a multi-layered structure consisting of filter pool 4, filter pool 3, and filter pool 2. Filter pool 4 is evenly provided with filter chamber 401, filter chamber 2, and filter chamber 3 403. Filter chamber 401, filter chamber 2, and filter chamber 3 403 are respectively provided with dredging net 7, dredging net 8, and dredging net 9. Filter pool 4, filter pool 2, and filter pool 3 on one side of dredging net 7, dredging net 2, and dredging net 3 are respectively provided with filter screen 10, filter screen 2, and filter screen 3.

[0039] The mesh sizes of filter screen 10, filter screen 21 and filter screen 32 decrease in that order, and the side walls on both sides of filter pool 4 are provided with insertion grooves 21 for fixing filter screen 10, filter screen 21 and filter screen 32.

[0040] Salvage net 1 (7), salvage net 2 (8), and salvage net 3 (9) all include a fixed frame 24 and a mesh plate 25. The mesh plate 25 is installed inside the fixed frame 24, and the mesh size of salvage net 1 (7), salvage net 2 (8), and salvage net 3 (9) decreases in that order.

[0041] Each fixed frame 24 has a support plate 23 on both sides, and the distance between the two support plates 23 is greater than the width of the filter tank 4.

[0042] like Figure 1 As shown, the housing 1 is generally rectangular in shape and mainly consists of a multi-layered structure composed of filter tank 4 (first layer), filter tank 3 (second layer), and filter tank 2 (third layer). Filter tank 4 is located on the top layer, filter tank 3 is located in the middle layer, and filter tank 2 is located on the bottom layer. The filter tanks are separated by partitions to ensure the independence and functionality of each layer.

[0043] The interior of filter tank 4 is evenly divided into three filter chambers: filter chamber 1 (401), filter chamber 2 (402), and filter chamber 3 (403). Each filter chamber is equipped with a retrieval net, specifically retrieval net 1 (7), retrieval net 2 (8), and retrieval net 3 (9). One side of retrieval nets 1 (7), retrieval net 2 (8), and retrieval net 3 (9) corresponds to the interior of filter tank 4, filter tank 2 (3), and filter tank 3 (2), respectively. Filter screens 1 (10), 2 (11), and 3 (12) are respectively installed inside these filter tanks.

[0044] The mesh sizes of filters 10, 11, and 12 decrease in that order, with filter 10 having the largest mesh size, followed by filter 11, and then filter 12 having the smallest. This decreasing mesh size design helps to filter impurities of different particle sizes layer by layer, improving filtration efficiency.

[0045] Both sides of the filter tank 4 are provided with insertion slots 21 for fixing filter screen 10, filter screen 21 and filter screen 32. The design of the insertion slots 21 makes the installation and replacement of the filter screens more convenient, and also ensures the stability of the filter screens.

[0046] Salvage net 1 (7), salvage net 2 (8), and salvage net 3 (9) all include a fixed frame 24 and a mesh panel 25. The fixed frame 24 is rectangular and made of high-strength material to ensure its structural stability. The mesh panel 25 is installed inside the fixed frame 24 and fixed by welding or bolting.

[0047] The mesh size of the three nets, namely 7, 8, and 9, decreases progressively, which corresponds to the mesh size design of the filter net and further enhances the filtration and retrieval effect.

[0048] Each fixed frame 24 has a support plate 23 on both sides. The main function of the support plate 23 is to support and fix the retrieval net, keeping it horizontal in the filter tank. The distance between the two support plates 23 is greater than the width of the filter tank 4, ensuring that the retrieval net can move freely in the filter tank, facilitating operation and maintenance.

[0049] Operating steps

[0050] 1. Install the filters: Insert filter 10, filter 21 and filter 312 into the insertion slots 21 on both sides of filter tank 4 respectively, ensuring that the filters are flat and firmly fixed.

[0051] 2. Install the salvage nets: Place salvage net 1 (7), salvage net 2 (8), and salvage net 3 (9) into filter compartment 1 (401), filter compartment 2 (402), and filter compartment 3 (403) respectively, ensuring that the net plate 25 is tightly connected to the fixed frame 24, and the support plate 23 supports the horizontal placement of the salvage nets.

[0052] 3. Filtration operation: The liquid to be filtered is injected into the inlet of the tank 1. The liquid passes through filter pool 4, filter pool 3 and filter pool 2 in sequence, and is filtered layer by layer by filter screen 10, filter screen 21 and filter screen 32, and impurities are gradually intercepted.

[0053] 4. Salvage operation: Regularly inspect salvage net 1 (7), salvage net 2 (8), and salvage net 3 (9) to remove the intercepted impurities and maintain the cleanliness and filtration efficiency of the filter bed.

[0054] The filter box assembly 14 is fixed to one end of the box body 1 by a bracket, and the top of the filter box assembly 14 is provided with a flow guide hood 13 connected to the transition port 20 of the first filter tank 4. The output pipe of the filter box assembly 14 extends into the interior of the second filter tank 3. The interior of the filter box assembly 14 is provided with a filter element 15 composed of a support frame 1501 and a multi-layer fiber filter cloth 1502.

[0055] Support blocks 1401 are provided at the four corners of the inner side of the filter box assembly 14. The support blocks 1401 are all L-shaped structures. The filter element 15 can be detachably installed on the inner side of the four support blocks 1401.

[0056] The filter box assembly 14 is fixed to one end of the housing 1 by a bracket. The main function of the filter box assembly 14 is to filter liquids. Its structure is reasonably designed and easy to install and maintain.

[0057] A flow guide shroud 13 is provided on the top of the filter box assembly 14, which is connected to the transition port 20 of the filter tank 4. The function of the flow guide shroud 13 is to guide the liquid smoothly from the filter tank 4 into the filter box assembly 14, avoiding turbulence during the liquid entry process, which would affect the filtration effect. The material of the flow guide shroud 13 can be corrosion-resistant plastic or metal.

[0058] The output pipe of filter box assembly 14 extends into the interior of filter tank 2 3. The design of the output pipe ensures that the filtered liquid can smoothly enter filter tank 2 3, and the material of the output pipe also needs to be corrosion-resistant to ensure that it will not be damaged during long-term use.

[0059] The filter box assembly 14 contains a filter element 15, which is composed of a support frame 1501 and a multi-layer fiber filter cloth 1502. The support frame 1501 provides structural support for the filter element 15, ensuring that it does not deform during use. The multi-layer fiber filter cloth 1502 is responsible for filtering the liquid, and its material can be selected from high-precision filter fibers to ensure filtration efficiency.

[0060] Support blocks 1401 are provided at each of the four corners inside the filter box assembly 14. The support blocks 1401 have an L-shaped structure, which facilitates the installation and removal of the filter element 15. The support blocks 1401 can be made of high-strength plastic or metal to ensure that they can withstand the weight of the filter element 15 and the pressure generated during the filtration process.

[0061] The filter element 15 is detachably installed inside the four support blocks 1401. During installation, align the four corners of the filter element 15 with the inside of the support blocks 1401 and gently push it in. During removal, simply pull the filter element 15 out from the inside of the support blocks 1401. This design greatly simplifies the replacement and maintenance process of the filter element 15.

[0062] Ultrasonic generators 19 are evenly installed on the outer walls of the boxes 1 on both sides of filter pool 2 3. Filter pool 2 3 is connected to filter pool 3 2 through a conduit, and activated carbon filter element 26 is installed inside filter pool 3 2.

[0063] A microbial funnel 6 is provided at one end of the housing 1 via a fixing clamp 5, and the output end of the microbial funnel 6 extends into the interior of the second filter 3. An inlet 22 connected to the first filter 4 is provided on the side wall of the housing 1 above the microbial funnel 6.

[0064] At the bottom of the other end of the housing 1, there is an outlet 18 that is connected to the filter tank 2. An encapsulation cover 16 is fixed to the inside of the outlet 18 by bolts. An outlet pipe 17 extending to the inside of the outlet 18 is provided on the encapsulation cover 16. A plug can be detachably installed on the outlet pipe 17.

[0065] Ultrasonic generators 19 are evenly installed on both outer walls of the housing 1. The ultrasonic generators 19 are fixed by bolts and equipped with power interfaces to generate high-frequency ultrasonic waves to enhance the water purification effect.

[0066] Filter tank 2 (3) is connected to filter tank 3 (2) via a conduit made of corrosion-resistant PVC or stainless steel to ensure smooth water flow.

[0067] Filter pool 32 is located downstream of filter pool 23, and is equipped with activated carbon filter element 26 inside.

[0068] The activated carbon filter element 26 is fixed in the center of filter tank 2 by a filter element support. The filter element is made of high-quality activated carbon and has a high adsorption capacity.

[0069] A microbial funnel 6 is installed at one end of the box 1 via a fixing clamp 5. The fixing clamp 5 is made of stainless steel to ensure the stability of the funnel.

[0070] The output end of the microbial funnel 6 extends into the interior of filter tank 2 3. The funnel is made of corrosion-resistant plastic or stainless steel.

[0071] The side wall of the box 1 above the microbial funnel 6 is provided with an inlet 22 that is connected to the filter tank 4, and the bottom of the other end of the box 1 is provided with an outlet 18 that is connected to the filter tank 2.

[0072] The cavitation effect of ultrasound generates tiny bubbles in liquids. When these bubbles collapse rapidly, they produce localized high temperatures, high pressures, and strong shock waves. This effect increases the permeability of microbial cell membranes, making it easier for organic pollutants in wastewater to enter the cells, providing more substrates for microbial metabolism, and thus improving the efficiency of pollutant degradation by microorganisms. The mechanical and thermal effects of ultrasound can also affect the activity of enzymes within microorganisms.

[0073] Appropriate intensity ultrasound can induce conformational changes in enzyme molecules that favor catalytic reactions, increasing the binding force between enzymes and substrates, promoting enzymatic reactions, and accelerating the decomposition of organic matter in wastewater by microorganisms. The microfluidic effect generated by ultrasound can improve mass transfer conditions around microorganisms, allowing nutrients to diffuse more rapidly to the microbial cell surface while simultaneously removing metabolic products. Furthermore, ultrasound may influence gene expression in microorganisms, stimulating their growth and reproduction, increasing their numbers, and thus improving wastewater treatment efficiency.

[0074] The energy of ultrasound can break down large organic pollutants in wastewater into smaller molecules. For example, long-chain organic matter can be broken down into shorter segments, and complex polymers can be decomposed into monomers or oligomers. These smaller molecules are more easily utilized and degraded by microorganisms, reducing the complexity of pollutants and improving their biodegradability.

[0075] For suspended particles and colloidal substances in wastewater, the mechanical vibration of ultrasound can disperse them, preventing particle aggregation and sedimentation. This increases the contact area between particles and microorganisms, which is beneficial for the adsorption and degradation of pollutants on the particle surface by microorganisms.

[0076] An encapsulation cover 16 is fixed to the inside of the outlet 18 by bolts. The encapsulation cover 16 is made of stainless steel and has good sealing and corrosion resistance.

[0077] The encapsulation cover 16 is provided with a water outlet pipe 17 extending to the inside of the water outlet 18. The water outlet pipe 17 is made of PVC or stainless steel.

[0078] A plug can be detachably installed on the water outlet pipe 17. The plug is made of corrosion-resistant plastic, which is convenient for maintenance and replacement.

[0079] In this embodiment, the liquid to be filtered is injected into the inlet of the tank 1. The liquid passes sequentially through filter pool 4, filter pool 3, and filter pool 2, and is filtered layer by layer by filter screens 10, 11, and 12, where impurities are gradually intercepted. The filtered wastewater is then guided into the filter box assembly 14 by the guide hood 13. The filter box assembly 14 contains a filter element 15, which is composed of a support frame 1501 and multiple layers of fiber filter cloth 1502. The support frame 1501 provides structural support for the filter element 15, ensuring that it does not deform during use. The multiple layers of fiber filter cloth 1502 are responsible for further filtration of the liquid. The filtered wastewater enters the interior of filter pool 3, where, under the action of an ultrasonic generator combined with microbial treatment, pollutants in the wastewater are adsorbed and degraded. Finally, it enters filter pool 2 through a conduit, where it is further purified by activated carbon filter element 26 and discharged through the outlet pipe 17.

[0080] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0081] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0083] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A laundry wastewater treatment device, characterized by: The utility model relates to a multi-layer filter tank, which comprises a box (1) with a multi-layer structure composed of filter tank one (4), filter tank two (3) and filter tank three (2), and the inside of the filter tank one (4) is uniformly provided with filter bin one (401), filter bin two (402) and filter bin three (403), the inside of the filter bin one (401), filter bin two (402) and filter bin three (403) is respectively provided with fishing net one (7), fishing net two (8) and fishing net three (9), and the inside of the filter tank one (4), filter tank two (3) and filter tank three (2) on one side of the fishing net one (7), fishing net two (8) and fishing net three (9) is respectively provided with filter screen one (10), filter screen two (11) and filter screen three (12). The filter tank assembly (14) is fixed to one end of the box (1) through a support, and the top of the filter tank assembly (14) is provided with a flow guide cover (13) connected with the overflow port (20) of the filter tank one (4), the output pipe of the filter tank assembly (14) extends to the inside of the filter tank two (3), and the inside of the filter tank assembly (14) is provided with a filter core (15) composed of a support frame (1501) and a multi-layer fiber filter cloth (1502). The outside walls of the box (1) on both sides of the filter tank two (3) are uniformly provided with ultrasonic generators (19), the filter tank two (3) and the filter tank three (2) are communicated through a conduit, and the inside of the filter tank three (2) is provided with an activated carbon filter core (26). One end of the box (1) is provided with a microbial funnel (6) through a fixing clamp (5), the output end of the microbial funnel (6) extends to the inside of the filter tank two (3), and the side wall of the box (1) above the microbial funnel (6) is provided with a water inlet (22) connected with the filter tank one (4).

2. A laundry wastewater treatment device according to claim 1, characterized in that: The bottom of the other end of the box (1) is provided with a water outlet (18) communicated with the filter tank three (2), the inside of the water outlet (18) is fixed with an encapsulation cover plate (16) through a bolt, the encapsulation cover plate (16) is provided with a water outlet pipe (17) extending to the inside of the water outlet (18), and the water outlet pipe (17) is detachably provided with a plug.

3. A laundry wastewater treatment device according to claim 1, characterized in that: The mesh apertures of the filter screen one (10), filter screen two (11) and filter screen three (12) are in a decreasing state, and the side walls on both sides of the filter tank one (4) are provided with plug-in grooves (21) for fixing the filter screen one (10), filter screen two (11) and filter screen three (12).

4. A laundry wastewater treatment device according to claim 1, characterized in that: The fishing net one (7), fishing net two (8) and fishing net three (9) each comprise a fixed frame (24) and a net plate (25), the net plate (25) is mounted to the inside of the fixed frame (24), and the mesh of the fishing net one (7), fishing net two (8) and fishing net three (9) is in a decreasing state.

5. A laundry wastewater treatment device according to claim 1, characterized in that: The two sides of each fixed frame (24) are provided with a supporting plate (23), and the distance between the two supporting plates (23) is greater than the width of the filter tank one (4).

6. A laundry wastewater treatment device according to claim 5, wherein: ​ 7. A laundry wastewater treatment device according to claim 1, characterized in that: Supporting blocks (1401) are arranged at four corner positions on the inner side of the filter box assembly (14), the supporting blocks (1401) are all L-shaped structures, and the filter core (15) is detachably installed on the inner side of the four supporting blocks (1401).

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