A small box type modular general sewage treatment equipment and a use method thereof

Abstract

The application relates to the technical field of water treatment equipment, and discloses a small box type modular general sewage treatment equipment and a use method thereof, which comprises a base, an accommodating groove is formed in the inside of the base, a pretreatment box is arranged at the top of the base, a composite purification box is arranged at the right side of the pretreatment box, a deep purification box is arranged at the right side of the composite purification, a transverse assembling mechanism is arranged outside the base, and a longitudinal assembling mechanism is arranged outside the composite purification box. Through the multistage process series connection and cooperation of physical interception, biological degradation, adsorption filtration and ultraviolet disinfection, the application realizes efficient removal of suspended solids, organic pollutants, ammonia nitrogen and pathogenic microorganisms in sewage, has compact structure, flexible modular design, can adapt to different treatment scales, the pretreatment unit effectively protects core components, the biochemical unit adopts porous ceramic filler and a micro aeration disc to strengthen mass transfer efficiency, and the organic matter degradation capacity is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a small, modular, universal wastewater treatment equipment and its usage method. Background Technology

[0002] Wastewater treatment equipment refers to a type of environmental protection equipment used to physically, chemically, and biologically treat domestic sewage, industrial wastewater, or similar wastewater to remove pollutants (such as suspended solids, organic matter, nitrogen, phosphorus, pathogens, etc.) so that they meet discharge standards or reuse requirements. This type of equipment is widely used in urban sewage treatment plants, residential communities, industrial parks, hospitals, schools, tourist attractions, and decentralized rural treatment.

[0003] Currently, small-scale wastewater treatment equipment is widely used in rural domestic sewage, temporary construction wastewater, and small-scale point-of-use sewage treatment scenarios. However, existing equipment often suffers from the following technical deficiencies:

[0004] 1. The equipment is mostly a fixed, integrated structure, which cannot be flexibly expanded according to the water volume, and the treatment capacity is limited; the tank has no dedicated positioning benchmark, and it is easy for it to tilt or shift during on-site installation. Uneven ground can easily lead to equipment settlement and structural deformation.

[0005] 2. The connection between the enclosures is mostly done by flange bolts, which is cumbersome to disassemble and assemble, has poor sealing performance, is prone to leakage, and water, gas and electricity pipelines are connected separately, resulting in messy wiring and piping on site and a long construction period.

[0006] 3. The wastewater treatment efficiency is low, the structure is too complex, and the use is very inconvenient. Therefore, a small box-type modular universal wastewater treatment equipment and its usage method are proposed to solve the above-mentioned problems. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a small, modular, universal wastewater treatment equipment and its usage method, which has the advantages of rapid installation, flexible expansion, and precise positioning, and solves the problems of cumbersome horizontal docking and vertical stacking connections of the equipment, easy loosening, and poor sealing.

[0009] Technical solution

[0010] The present invention provides the following technical solution: a small box-type modular universal sewage treatment equipment, including a base, an internal receiving groove, a pretreatment box on the top of the base, a composite purification box on the right side of the pretreatment box, a deep purification box on the right side of the composite purification box, a horizontal assembly mechanism on the outside of the base, and a vertical assembly mechanism on the outside of the composite purification box.

[0011] The transverse assembly mechanism includes a locking block, a locking slot, a limiting rod, a baffle, a positioning groove, a positioning post, a limiting groove, a return spring, a plug rod, an electric suction cup, a handle, a mounting plate, and fixing screws. A locking block is fixedly installed on the right side of the pretreatment box. A locking slot is provided inside the composite purification box. Limiting rods are installed on both the front and rear sides of the pretreatment box. A baffle is sleeved on the outside of the limiting rod. A positioning groove is provided inside the baffle. A positioning post is fixedly installed on both the front and rear sides of the composite purification box. A limiting groove is provided inside the baffle. A return spring is installed inside the limiting groove. A plug rod is connected to the right side of the return spring. An electric suction cup is fixedly installed inside the baffle. A handle is fixedly installed on the outside of the plug rod. A mounting plate is installed on the left side of the pretreatment box. Fixing screws are provided on the outside of the mounting plate.

[0012] Preferably, the number of composite purification boxes is not less than two, the number of receiving tanks is three, and the bottoms of the pretreatment box, composite purification box and deep purification box extend into the interior of the three receiving tanks respectively.

[0013] Preferably, the longitudinal assembly mechanism includes a positioning post, an anti-misalignment groove, a horizontal plate, an extension plate, a limiting frame, a protrusion, a groove, a spring, and an anti-detachment block. The top of the bottom composite purification box is equipped with a positioning post, the bottom of the top composite purification box is provided with an anti-misalignment groove, the outside of the bottom composite purification box is equipped with a horizontal plate, the top of the horizontal plate is hinged with an extension plate, the top of the extension plate is equipped with a limiting frame, the outside of the top composite purification box is equipped with a protrusion, the inside of the protrusion is provided with a groove, the inside of the groove is equipped with a spring, and the outside of the spring is connected to an anti-detachment block.

[0014] Preferably, the side of the card block away from the pretreatment box extends into the interior of the card slot, and the opposite sides of the two positioning posts respectively penetrate the two positioning slots.

[0015] Preferably, the two anti-detachment blocks extend to the outside of the limiting frame on the side away from the two spring pieces, a water inlet pipe is fixedly connected to the top of the pretreatment box, a first water purification component is provided inside the pretreatment box, a second water purification component is provided inside the composite purification box, and a third water purification component is provided inside the deep purification box.

[0016] Preferably, the first water purification component includes a filter basket, a grid plate, an adjusting plate, an electric push rod, a vortex grit chamber, a motor, a stirring shaft, and a sand discharge pipe. The filter basket is installed inside the pretreatment tank, and the grid plate is slidably connected inside the filter basket. An adjusting plate is installed at the bottom of the filter basket, and an electric push rod is installed outside the adjusting plate. A vortex grit chamber is provided at the bottom of the filter basket, and a motor is provided at the top of the vortex grit chamber. A stirring shaft is installed at the output shaft of the motor, and a sand discharge pipe is installed at the bottom of the vortex grit chamber.

[0017] Preferably, a reagent tank is installed on the outside of the pretreatment tank, and a reagent guide pipe is installed on the top of the reagent tank. The second water purification component includes a porous ceramic composite media packing layer, a micro aeration disc, and a conical sludge collection hopper. A porous ceramic composite media packing layer is installed inside the composite purification tank. A micro aeration disc is provided at the bottom of the porous ceramic composite media packing layer. A conical sludge collection hopper is provided at the bottom of the micro aeration disc. A sludge discharge pipe is provided on the front side of the conical sludge collection hopper.

[0018] Preferably, the third water purification component includes an activated carbon plate, a precision microfiltration plate, and an ultraviolet disinfection lamp. The activated carbon plate is fixedly installed inside the deep purification box, the precision microfiltration plate is installed at the bottom of the activated carbon plate, and the ultraviolet disinfection lamp is installed inside the deep purification box.

[0019] Preferably, the deep purification box is equipped with an outlet pipe, the pretreatment box is externally threaded with a first water guide pipe that is connected to the composite purification box, and the composite purification box is externally threaded with a second water guide pipe that is connected to the deep purification box.

[0020] Preferably, the method of using the small, modular, universal wastewater treatment equipment includes the following steps:

[0021] Step 1: First, place the base with three receiving slots on a flat surface. The receiving slots provide a precise positioning reference for the subsequent chambers, preventing the equipment from tilting or settling. Place the bottoms of the pretreatment chamber, composite purification chamber, and deep purification chamber into their respective receiving slots to complete the initial positioning.

[0022] Step 2: Use the horizontal assembly mechanism to connect adjacent boxes. Insert the card block on the right side of the pretreatment box into the card slot on the left side of the composite purification box to achieve initial horizontal alignment and positioning between the boxes. Rotate the baffle to align the positioning post and insert it into the positioning slot. Then pull the handle outward to move the insertion rod to connect with the electric suction cup. Fix the leftmost pretreatment box and the rightmost deep purification box to the base with the mounting plate and fixing screws to prevent overall displacement.

[0023] Step 3: When the processing capacity of a single composite purification box is insufficient, the vertical assembly mechanism can be used for vertical expansion. Align the anti-misalignment groove at the bottom of the upper composite purification box with the positioning post at the top of the lower composite purification box and lower it down to ensure precise alignment of the upper and lower boxes and prevent misalignment. Flip the extension plate on the side of the lower box upward and unfold it so that the protrusion enters the limiting frame. At this time, the spring in the groove inside the protrusion is pressed, and the anti-detachment block at its end retracts. When the protrusion is fully in place, the spring rebounds and pushes the anti-detachment block out, which is locked outside the limiting frame to achieve automatic locking and prevent the upper and lower boxes from separating.

[0024] Step 4: Connect the pretreatment box and the composite purification box using the threaded first water pipe, and connect the composite purification box and the deep purification box using the second water pipe. Connect the power supply, gas supply and control circuit required for each box. The modular design makes the water, electricity and gas pipeline interfaces centralized and the on-site wiring clear.

[0025] Step 5: Physical pretreatment. Wastewater enters the pretreatment tank through the inlet pipe and first flows through the grid plate in the filter basket to intercept and remove large suspended solids and debris. The pre-filtered wastewater falls into the vortex grit chamber. The motor is started to drive the stirring shaft to rotate, forming a vortex. Centrifugal force is used to make the heavier inorganic particles such as sand settle. The settled sand particles are periodically discharged through the sand discharge pipe at the bottom. The electric push rod can drive the regulating plate to control the wastewater flow rate.

[0026] Step 6: The pretreated water enters the composite purification tank through the first water guide pipe. Depending on the water quality, coagulants or acid-base regulators can be added from the reagent tank. The water flows upward through the porous ceramic composite media packing layer. This packing has a large specific surface area, providing a huge space for microbial growth and forming a biofilm. The micro aeration disc at the bottom continuously introduces air, generating a large number of microbubbles. The mixed liquid after the biochemical reaction enters the lower conical sludge collection hopper, where the sludge settles and concentrates, and is periodically discharged through the sludge discharge pipe.

[0027] Step 7: The supernatant enters the deep purification tank through the second water pipe. First, it passes through the activated carbon plate, which adsorbs and removes residual dissolved organic matter, color, and odor from the water. Then, the water flows through the precision microfiltration plate, which traps tiny suspended particles and some bacteria to ensure the turbidity of the effluent. Finally, the ultraviolet disinfection lamp emits ultraviolet light to destroy the DNA of pathogenic microorganisms in the water, causing them to become inactive, thus completing the final disinfection. The treated clean water that meets the standards is discharged through the outlet pipe.

[0028] Beneficial effects

[0029] Compared with the prior art, the present invention provides a small-scale, modular, universal wastewater treatment device and its usage method, which has the following beneficial effects:

[0030] This small, modular, universal wastewater treatment equipment and its operating method utilize a multi-stage process involving physical interception, biodegradation, adsorption filtration, and ultraviolet disinfection to achieve highly efficient removal of suspended solids, organic pollutants, ammonia nitrogen, and pathogenic microorganisms from wastewater. Its compact structure and modular design allow for flexible adaptation to different treatment scales. The pretreatment unit effectively protects core components, while the biochemical unit employs porous ceramic packing and micro-aeration discs to enhance mass transfer efficiency and significantly improve organic matter degradation capabilities. The advanced treatment unit uses activated carbon adsorption, precision filtration, and ultraviolet disinfection to ensure clear, odorless effluent with microbial indicators meeting standards. The entire process operates stably and is easy to maintain, combining high-efficiency purification with energy conservation and environmental protection advantages. It is particularly suitable for rapid deployment and long-term stable operation in decentralized, small-scale wastewater treatment scenarios. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0032] Figure 2 This is a three-dimensional schematic diagram of the base of the present invention;

[0033] Figure 3 This is a frontal view of the present invention;

[0034] Figure 4 This is a cross-sectional schematic diagram of the baffle of the present invention;

[0035] Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle;

[0036] Figure 6 For the present invention Figure 3 Enlarged diagram at point B

[0037] Figure 7 This is a cross-sectional view of the present invention.

[0038] In the diagram: 1. Base, 2. Receiving tank, 3. Pretreatment tank, 4. Composite water purification tank, 5. Deep water purification tank, 6. Horizontal assembly mechanism, 601. Locking block, 602. Locking slot, 603. Limiting rod, 604. Baffle, 605. Positioning slot, 606. Positioning post, 607. Limiting slot, 608. Return spring, 609. Insert rod, 610. Electric suction cup, 611. Handle, 612. Mounting plate, 613. Fixing screw, 7. Vertical assembly mechanism, 701. Positioning post, 702. Anti-misalignment slot, 703. Horizontal plate, 704. Extension plate, 705. Limiting frame, 706. Protrusion, 707. Groove, 708. Spring, 7. 09 Anti-detachment block, 8 Inlet pipe, 9 First water purification component, 901 Filter basket, 902 Grating plate, 903 Adjustment plate, 904 Electric push rod, 905 Swirl grit chamber, 906 Motor, 907 Agitator shaft, 908 Sand discharge pipe, 10 Second water purification component, 1001 Porous ceramic composite media packing layer, 1002 Micro aeration disc, 1003 Conical sludge collection hopper, 11 Third water purification component, 1101 Activated carbon plate, 1102 Precision microfiltration plate, 1103 Ultraviolet disinfection lamp, 12 Chemical tank, 13 Outlet pipe, 14 First water guide pipe, 15 Second water guide pipe. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1-7 A small, modular, universal wastewater treatment device includes a base 1. The base 1 has an internal receiving slot 2, a pretreatment box 3 is provided on the top of the base 1, a composite purification box 4 is provided on the right side of the pretreatment box 3, a deep purification box 5 is provided on the right side of the composite purification box 4, a horizontal assembly mechanism 6 is provided on the outside of the base 1, and a vertical assembly mechanism 7 is provided on the outside of the composite purification box 4.

[0041] The horizontal assembly mechanism 6 includes a locking block 601, a locking slot 602, a limiting rod 603, a baffle 604, a positioning groove 605, a positioning post 606, a limiting groove 607, a return spring 608, a plug rod 609, an electric suction cup 610, a handle 611, a mounting plate 612, and fixing screws 613. The locking block 601 is fixedly installed on the right side of the pretreatment box 3. The locking slot 602 is opened inside the composite purification box 4. Limiting rods 603 are installed on both the front and rear sides of the pretreatment box 3. A baffle 604 is sleeved on the outside of the limiting rod 603. The plate 604 has a positioning groove 605 inside. The front and rear sides of the composite purification box 4 are fixedly installed with positioning columns 606. The baffle 604 has a limit groove 607 inside. The limit groove 607 is installed with a return spring 608 inside. The right side of the return spring 608 is connected to a plug rod 609. The baffle 604 has an electric suction cup 610 fixedly installed inside. The plug rod 609 has a handle 611 fixedly installed on the outside. The pretreatment box 3 has an installation plate 612 installed on the left side. The installation plate 612 has fixing screws 613 on the outside.

[0042] exist Figure 1 and Figure 2 In this system, there are no fewer than two composite purification boxes 4 and three receiving tanks 2. The bottoms of the pretreatment box 3, composite purification box 4, and deep purification box 5 extend into the interior of the three receiving tanks 2.

[0043] exist Figure 1 and Figure 2 In the middle, the longitudinal assembly mechanism 7 includes a positioning post 701, an anti-misalignment groove 702, a horizontal plate 703, an extension plate 704, a limiting frame 705, a protrusion 706, a groove 707, a spring piece 708, and an anti-detachment block 709. The positioning post 701 is installed on the top of the bottom composite purification box 4, the anti-misalignment groove 702 is opened on the bottom of the top composite purification box 4, the horizontal plate 703 is installed on the outside of the bottom composite purification box 4, the extension plate 704 is hinged to the top of the horizontal plate 703, the limiting frame 705 is installed on the top of the extension plate 704, the protrusion 706 is installed on the outside of the top composite purification box 4, the groove 707 is opened inside the protrusion 706, the spring piece 708 is installed inside the groove 707, and the anti-detachment block 709 is connected to the outside of the spring piece 708.

[0044] exist Figure 2 and Figure 3 In the middle, the side of the card block 601 away from the pretreatment box 3 extends into the interior of the card slot 602, and the opposite sides of the two positioning posts 606 respectively penetrate the two positioning slots 605.

[0045] exist Figure 4 and Figure 5In the middle, the two anti-detachment blocks 709 extend to the outside of the limiting frame 705 on the side away from the two spring pieces 708. The top of the pretreatment box 3 is fixedly connected to the water inlet pipe 8. The pretreatment box 3 is equipped with a first water purification component 9. The composite purification box 4 is equipped with a second water purification component 10. The deep purification box 5 is equipped with a third water purification component 11.

[0046] exist Figure 7 In the first water purification component 9, there are filter baskets 901, grid plates 902, adjusting plates 903, electric push rods 904, vortex grit chambers 905, motors 906, stirring shafts 907, and sand discharge pipes 908. The filter basket 901 is installed inside the pretreatment tank 3. The grid plates 902 are slidably connected inside the filter basket 901. The adjusting plates 903 are installed at the bottom of the filter basket 901. The electric push rods 904 are installed outside the adjusting plates 903. The vortex grit chamber 905 is set at the bottom of the filter basket 901. The motor 906 is set at the top of the vortex grit chamber 905. The stirring shaft 907 is installed at the output shaft of the motor 906. The sand discharge pipe 908 is installed at the bottom of the vortex grit chamber 905.

[0047] Specifically, the raw wastewater first enters the pretreatment tank 3 through the inlet pipe 8. In the first step, it flows through the filter basket 901 equipped with a bar screen 902, intercepting and removing larger suspended solids and solid waste. In the second step, the pre-filtered wastewater falls into the lower-level vortex grit chamber 905. During this process, the flow rate can be adjusted via the regulating plate 903. Inside the vortex grit chamber 905, the motor 906 drives the stirring shaft 907 to rotate, generating a hydraulic vortex. Centrifugal force is used to achieve efficient sedimentation of inorganic particles with higher densities, such as sand. This component effectively removes particulate impurities from the wastewater that could potentially damage or clog subsequent pumps and biological treatment units through mechanical interception and vortex centrifugation. This not only protects the subsequent core treatment units but also reduces their physical load, ensuring the continuity and stability of the treatment chain.

[0048] exist Figure 7 In the pretreatment tank 3, a chemical tank 12 is installed on the outside, and a chemical guide pipe is installed on the top of the chemical tank 12. The second water purification component 10 includes a porous ceramic composite media packing layer 1001, a micro aeration disc 1002, and a conical sludge collection hopper 1003. The porous ceramic composite media packing layer 1001 is installed inside the composite purification tank 4. A micro aeration disc 1002 is set at the bottom of the porous ceramic composite media packing layer 1001. A conical sludge collection hopper 1003 is set at the bottom of the micro aeration disc 1002. A sludge discharge pipe is set on the front side of the conical sludge collection hopper 1003.

[0049] Specifically, the pretreated wastewater enters the composite purification tank 4 from the pretreatment tank 3 through the first water guide pipe 14. Inside the tank, the wastewater is first mixed with chemical agents, such as coagulants, added in the reagent tank 12. Subsequently, the water flows through a porous ceramic composite media packing layer 1001 filled with a large surface area. The microbial biofilm attached to the packing adsorbs and decomposes organic pollutants and ammonia nitrogen in the water through biological contact oxidation. To provide sufficient oxygen to maintain the activity of aerobic microorganisms, micro aeration discs 1002 located at the bottom of the packing layer continuously aerate the water, forming microbubbles to increase oxygen transfer efficiency. The microbial flocculent sludge generated during the purification process settles into the conical sludge collection hopper 1003 at the bottom under gravity.

[0050] The core of the second component lies in the synergistic effect of the porous ceramic packing material, which provides an excellent carrier for microbial attachment; the micro-aeration disc efficiently oxygenates and provides the necessary conditions for microbial reactions, while also playing a role in hydraulic mixing; and the conical sludge collection hopper facilitates the collection and discharge of sludge. These three components work closely together to form a highly efficient biological treatment core, playing a decisive role in removing the main organic pollutants COD / BOD from wastewater and in nitrification.

[0051] exist Figure 7 In the process, the third water purification component 11 includes an activated carbon plate 1101, a precision microfiltration plate 1102, and an ultraviolet disinfection lamp 1103. The activated carbon plate 1101 is fixedly installed inside the deep purification box 5, the precision microfiltration plate 1102 is installed at the bottom of the activated carbon plate 1101, and the ultraviolet disinfection lamp 1103 is installed inside the deep purification box 5.

[0052] exist Figure 6 In the process, the deep purification box 5 is equipped with an outlet pipe 13, the pretreatment box 3 is externally threaded with a first water guide pipe 14 that is connected to the composite purification box 4, and the composite purification box 4 is externally threaded with a second water guide pipe 15 that is connected to the deep purification box 5.

[0053] Specifically, the biochemically purified water flows from the composite purification tank 4 into the deep purification tank 5 through the second water pipe 15. The water first passes through the activated carbon plate 1101, where the strong adsorption properties of activated carbon remove residual color, odor, and some dissolved organic matter. Next, it passes through the precision microfiltration plate 1102, further trapping tiny suspended particles in the water. Before exiting the equipment, the water flows through the effective irradiation area of ​​the ultraviolet disinfection lamp 1103, where ultraviolet light destroys the DNA structure of residual pathogenic microorganisms such as bacteria and viruses, achieving harmless disinfection. The third component completes the final water quality control. Its effectiveness is achieved through a series of adsorption-filtration-disinfection processes: activated carbon adsorption and microfiltration together ensure that the sensory indicators and turbidity of the effluent meet standards; ultraviolet disinfection achieves deep sterilization without the addition of chemical agents, ensuring the effluent is hygienic and safe, meeting high standards for discharge or reuse.

[0054] In summary, the small, modular, universal sewage treatment equipment and its usage method are based on a horizontal assembly mechanism 6, which consists of components such as a locking block 601, a locking slot 602, a limiting rod 603, a baffle 604, a positioning column 606, and an electric suction cup 610. Rapid positioning and rigid connection: Initial lateral positioning and connection are achieved by inserting the locking block 601 into the locking slot 602 of the adjacent box, ensuring accurate docking between the boxes. The baffle 604 is fitted onto the limiting rod 603 and can be moved so that the positioning slot 605 fits onto the positioning post 606. The internal return spring 608 and the insertion rod 609 can lock the position of the baffle, while the electric suction cup 610 is attached to the surface of the box to provide additional fixing force. This combination achieves rapid and firm mechanical locking between the boxes, effectively preventing the connection from loosening due to vibration during operation, and solving the problems of cumbersome and easy leakage of traditional flange bolt connections. The mounting plate 612 and fixing screws 613 are used to fix the first box to the foundation or site. The entire mechanism design makes the lateral splicing of new processing units, such as additional composite purification boxes, highly efficient, and realizes flexible expansion of processing capacity.

[0055] Furthermore, the longitudinal assembly mechanism 7 includes a positioning post 701, an anti-misalignment groove 702, a horizontal plate 703, an extension plate 704, a limiting frame 705, a protrusion 706, and an anti-detachment block 709 with a spring clip 708. The positioning post 701 on the top of the lower box cooperates with the anti-misalignment groove 702 on the bottom of the upper box to ensure accurate positioning when the upper and lower boxes are stacked and prevent misalignment. The horizontal plate 703 of the lower box can... The hinged extension plate 704 has a limiting frame 705 at its top that engages with the protrusion 706 of the upper box. The anti-detachment block 709 inside the protrusion 706 pops out under the action of the spring piece 708 and locks into the limiting frame 705 to form an automatic lock. This design enables the rapid vertical stacking and stable fixation of the box, greatly simplifies the multi-layer modular installation process, enhances the overall structural integrity, and is suitable for vertical expansion in sites with limited floor space.

[0056] 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.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small, modular, universal wastewater treatment device, comprising a base (1), characterized in that: The base (1) has an internal receiving groove (2), a pretreatment box (3) is provided on the top of the base (1), a composite purification box (4) is provided on the right side of the pretreatment box (3), a deep purification box (5) is provided on the right side of the composite purification box (4), a horizontal assembly mechanism (6) is provided on the outside of the base (1), and a vertical assembly mechanism (7) is provided on the outside of the composite purification box (4). The transverse assembly mechanism (6) includes a locking block (601), a locking groove (602), a limiting rod (603), a baffle (604), a positioning groove (605), a positioning column (606), a limiting groove (607), a return spring (608), a plug rod (609), an electric suction cup (610), a handle (611), a mounting plate (612), and fixing screws (613). The locking block (601) is fixedly installed on the right side of the pretreatment box (3). The locking groove (602) is opened inside the composite purification box (4). Limiting rods (603) are installed on both the front and rear sides of the pretreatment box (3). A baffle (604) is sleeved on the outside of the limiting rod (603). The baffle (604) has a positioning groove (605) inside. The composite purification box (4) is fixedly installed with positioning columns (606) on both the front and rear sides. The baffle (604) has a limiting groove (607) inside. The limiting groove (607) is installed with a return spring (608) inside. The right side of the return spring (608) is connected with a plug rod (609). The baffle (604) has an electric suction cup (610) fixedly installed inside. The plug rod (609) has a handle (611) fixedly installed on the outside. The pretreatment box (3) has an installation plate (612) installed on the left side. The installation plate (612) has fixing screws (613) on the outside.

2. The small-sized modular universal sewage treatment equipment according to claim 1, characterized in that: The number of composite purification boxes (4) is not less than two, the number of receiving tanks (2) is three, and the bottoms of the pretreatment box (3), composite purification box (4) and deep purification box (5) extend into the interior of the three receiving tanks (2).

3. The small-scale, modular, universal wastewater treatment equipment according to claim 1, characterized in that: The longitudinal assembly mechanism (7) includes a positioning post (701), an anti-misalignment groove (702), a horizontal plate (703), an extension plate (704), a limiting frame (705), a protrusion (706), a groove (707), a spring piece (708), and an anti-detachment block (709). The top of the bottom composite purification box (4) is equipped with a positioning post (701), the bottom of the top composite purification box (4) is provided with an anti-misalignment groove (702), the outside of the bottom composite purification box (4) is equipped with a horizontal plate (703), the top of the horizontal plate (703) is hinged with an extension plate (704), the top of the extension plate (704) is equipped with a limiting frame (705), the outside of the top composite purification box (4) is equipped with a protrusion (706), the inside of the protrusion (706) is provided with a groove (707), the inside of the groove (707) is equipped with a spring piece (708), and the outside of the spring piece (708) is connected with an anti-detachment block (709).

4. The small-scale, modular, universal wastewater treatment equipment according to claim 1, characterized in that: The card block (601) extends into the interior of the card slot (602) on the side away from the pretreatment box (3), and the opposite sides of the two positioning posts (606) respectively penetrate the two positioning slots (605).

5. A small, modular, universal wastewater treatment device according to claim 1, characterized in that: The two anti-detachment blocks (709) extend to the outside of the limiting frame (705) on the side away from the two spring pieces (708). The top of the pretreatment box (3) is fixedly connected to the water inlet pipe (8). The pretreatment box (3) is equipped with a first water purification component (9). The composite purification box (4) is equipped with a second water purification component (10). The deep purification box (5) is equipped with a third water purification component (11).

6. A small, modular, universal wastewater treatment device according to claim 5, characterized in that: The first water purification component (9) includes a filter basket (901), a grid plate (902), an adjusting plate (903), an electric push rod (904), a vortex grit chamber (905), a motor (906), a stirring shaft (907), and a sand discharge pipe (908). The filter basket (901) is installed inside the pretreatment box (3). The grid plate (902) is slidably connected inside the filter basket (901). The adjusting plate (903) is installed at the bottom of the filter basket (901). The electric push rod (904) is installed outside the adjusting plate (903). The vortex grit chamber (905) is set at the bottom of the filter basket (901). The motor (906) is set at the top of the vortex grit chamber (905). The stirring shaft (907) is installed at the output shaft of the motor (906). The sand discharge pipe (908) is installed at the bottom of the vortex grit chamber (905).

7. A small, modular, universal wastewater treatment device according to claim 5, characterized in that: The pretreatment tank (3) is equipped with a reagent tank (12) on the outside. A drug delivery pipe is installed on the top of the reagent tank (12). The second water purification component (10) includes a porous ceramic composite media packing layer (1001), a micro aeration disc (1002), and a conical sludge collection hopper (1003). The composite purification tank (4) is equipped with a porous ceramic composite media packing layer (1001) inside. A micro aeration disc (1002) is provided at the bottom of the porous ceramic composite media packing layer (1001). A conical sludge collection hopper (1003) is provided at the bottom of the micro aeration disc (1002). A sludge discharge pipe is provided on the front side of the conical sludge collection hopper (1003).

8. A small, modular, universal wastewater treatment device according to claim 5, characterized in that: The third water purification component (11) includes an activated carbon plate (1101), a precision microfiltration plate (1102), and an ultraviolet disinfection lamp (1103). The activated carbon plate (1101) is fixedly installed inside the deep purification box (5). The precision microfiltration plate (1102) is installed at the bottom of the activated carbon plate (1101). The ultraviolet disinfection lamp (1103) is installed inside the deep purification box (5).

9. A small-scale, modular, universal wastewater treatment device according to claim 1, characterized in that: The deep purification box (5) is equipped with an outlet pipe (13), the pretreatment box (3) is externally threaded with a first water guide pipe (14) that is connected to the composite purification box (4), and the composite purification box (4) is externally threaded with a second water guide pipe (15) that is connected to the deep purification box (5).

10. A method of using a small, modular, universal wastewater treatment device, comprising the method of using the small, modular, universal wastewater treatment device according to any one of claims 1-9, characterized in that: The method of using the aforementioned small, modular, universal wastewater treatment equipment includes the following steps: Step 1: First, place the base (1) with three receiving slots (2) on a flat ground. The receiving slots provide a precise positioning reference for the subsequent boxes, preventing the equipment from tilting or settling. Place the bottoms of the pretreatment box (3), composite purification box (4) and deep purification box (5) into the corresponding receiving slots (2) to complete the initial positioning. Step 2: Use the horizontal assembly mechanism (6) to connect adjacent boxes. Insert the card block (601) on the right side of the pretreatment box (3) into the card slot (602) on the left side of the composite purification box to achieve preliminary horizontal alignment and positioning between the boxes. Rotate the baffle (604) to align the positioning column (606) and insert it into the positioning slot (605). Then pull the handle (611) outward to drive the insertion rod (609) to move to connect with the electric suction cup (611). Fix the leftmost pretreatment box (3) and the rightmost deep purification box (5) to the base (1) with the mounting plate (612) and fixing screws (613) to prevent overall displacement. Step 3: When the processing capacity of a single composite purification box (4) is insufficient, the vertical assembly mechanism (7) can be used to expand the vertical capacity. The anti-misalignment groove (702) at the bottom of the upper composite purification box (4) is aligned with the positioning post (701) at the top of the lower composite purification box (4) and placed down to ensure that the upper and lower boxes are accurately aligned and to prevent misalignment. The extension plate (704) on the side of the lower box is flipped up and unfolded so that the protrusion (706) enters the limiting frame (705). At this time, the spring piece (708) in the groove (707) inside the protrusion (706) is pressed, and the anti-detachment block (709) at its end retracts. When the protrusion (706) is fully in place, the spring piece (708) rebounds and pushes the anti-detachment block (709) out and is stuck outside the limiting frame (705) to achieve automatic locking and prevent the upper and lower boxes from separating. Step 4: Connect the pretreatment box (3) and the composite purification box (4) using the threaded first water pipe (14), and connect the composite purification box (4) and the deep purification box (5) using the second water pipe (15). Connect the power supply, gas supply and control lines required for each box. The modular design makes the water, electricity and gas pipeline interfaces centralized and the on-site wiring clear. Step 5: Physical pretreatment. Wastewater enters the pretreatment tank (3) from the inlet pipe (8). It first flows through the grid plate (902) in the filter basket (901) to intercept and remove large suspended solids and debris. The wastewater after preliminary filtration falls into the vortex grit chamber (905). The motor (906) is started to drive the stirring shaft (907) to rotate, forming a vortex. Centrifugal force is used to make the inorganic particles such as sand with a larger specific gravity settle. The settled sand particles are periodically discharged through the sand discharge pipe (908) at the bottom. The electric push rod (904) can drive the regulating plate (903) to control the wastewater flow rate. Step 6: The pretreated water enters the composite purification tank (4) through the first water guide pipe. Depending on the water quality, coagulant or acid-base regulator can be added from the reagent tank (12). The water flows upward through the porous ceramic composite media packing layer (1001). The packing has a large specific surface area, which provides a huge space for microbial growth and forms a biofilm. The micro aeration disc (1002) at the bottom continuously introduces air and generates a large number of micro bubbles. The mixed liquid after the biochemical reaction enters the lower conical sludge collection hopper (1003), where the sludge settles and concentrates, and is periodically discharged through the sludge discharge pipe. Step 7: The supernatant enters the deep purification tank (5) through the second water pipe (15). First, it passes through the activated carbon plate (1101) to adsorb and remove residual dissolved organic matter, color, and odor in the water. Then, the water flows through the precision microfiltration plate (1102) to intercept tiny suspended particles and some bacteria, ensuring the turbidity of the effluent. Finally, the ultraviolet disinfection lamp (1103) emits ultraviolet light to destroy the DNA of pathogenic microorganisms (bacteria, viruses) in the water, making them inactive, thus completing the final disinfection. The treated water that meets the standards is discharged through the outlet pipe (13).

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