Integrated treatment equipment for multi-source construction wastewater

Abstract

The invention discloses integrated treatment equipment for multi-source construction wastewater, and relates to the field of wastewater treatment.The integrated treatment equipment comprises a shell and a guiding box, a sand settling box and a purifying box which are arranged in the shell, an inclined grating assembly is installed in a square liquid inlet pipe and used for dynamically adjusting grating gaps to intercept sundries of different particle sizes, and a cylinder is arranged in the sand settling box and used for adjusting the size of the sand settling box; a spiral flow guide pipe is installed on the inner wall of the cylinder, inclined plates are evenly installed in the spiral flow guide pipe, a first square through hole is formed in the bottom of the side wall of the sand settling box, a second square through hole is formed in the top wall of the side wall of the purifying box, and the first square through hole and the second square through hole are connected through a communicating pipe; the interior of the purification box is divided into a purification cavity and a post-filtration cavity through a membrane frame, and a mixing assembly is arranged at the position, located at the purification cavity, in the purification box, the integration level of equipment is improved, the occupied area of the equipment is effectively reduced, smooth circulation of wastewater among different treatment units is achieved through the flowability of the wastewater, and energy consumption is reduced while the treatment efficiency is ensured.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of wastewater treatment, in particular to a multi-source construction wastewater integrated treatment equipment. BACKGROUND

[0002] With the acceleration of urbanization and the extensive development of various construction projects, the treatment of multi-source construction wastewater has become an important issue in the field of environmental protection. Multi-source construction wastewater is widely sourced and complex in composition, often containing a large amount of suspended solids, sand, oil stains and various chemical substances. If not effectively treated and directly discharged, it will cause serious pollution to the environment, destroy the ecological balance and affect the quality of surrounding water, soil and groundwater.

[0003] A wastewater treatment equipment described in the prior art can open the first isolation plate after adding a certain proportion of medicine. Since it is opened in a rotating manner, it can realize the opening and reaction of the medicine in the dosing tank and the wastewater in the reaction chamber at the same time. After sufficient reaction in the reaction chamber, the second isolation plate is opened to enter the electro-flotation chamber to complete the electrode electrolysis and air flotation treatment. Finally, it is discharged in the discharge chamber.

[0004] Although the above-mentioned technology can control the reaction degree, electrolysis degree and air flotation treatment degree according to the pollution degree of wastewater, so that the wastewater treatment is thorough enough, the parts are relatively independent and the integration degree is limited. This not only leads to large equipment area and high installation and maintenance cost, but also causes problems such as poor connection and low treatment efficiency when wastewater flows between different treatment units, and does not reflect the adaptability to complex water quality of multi-source construction wastewater. SUMMARY

[0005] Therefore, the present application aims to provide a multi-source construction wastewater integrated treatment equipment to solve the technical problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A multi-source construction wastewater integrated treatment equipment, comprising a shell and an internal guide box, a sand setting box and a purification box, the upper surface of the guide box is provided with an opening and a square liquid inlet pipe with the same length is installed, the sand setting box is located on one side of the guide box and is connected by a guide pipe, the purification box is located below the guide box and is fixed with the inner bottom wall of the shell by screws, an inclined grid assembly is installed in the square liquid inlet pipe, the grid assembly is used to dynamically adjust the grid gap to intercept different particle sizes of sundries, a cylinder is arranged in the sand setting box, the bottom of the cylinder is funnel-shaped and the funnel angle is 60°, a spiral flow guide pipe is installed on the inner wall of the cylinder, inclined plates are uniformly installed in the pipe of the spiral flow guide pipe, filter holes are arranged on the outer wall of the spiral flow guide pipe, and a spiral filter screen is installed on the outer wall of the cylinder at the spiral flow guide pipe; The bottom of the side wall of the sedimentation tank is provided with a first square through hole, and the top of the side wall of the purification tank is provided with a second square through hole. The first square through hole and the second square through hole are connected by a connecting pipe. The interior of the purification tank is divided into a purification chamber and a filtration chamber by a membrane frame. A mixing component is provided in the purification chamber of the purification tank. The mixing component is used to mix wastewater and coagulant and change the aeration position.

[0007] Specifically, the grid assembly includes a frame, which is inclined and extends to the outside through the wall of a square inlet pipe at both ends. The frame contains multiple grid bars, each with its two ends rotatably connected to the inner wall of the frame via a pivot. A protective box is installed at the high end of the frame, containing multiple meshing drive gears. A shaft is fixedly inserted at the center of each drive gear, and one end of each shaft penetrates the wall of the protective box and is fixedly connected to a corresponding pivot. A drive motor is mounted on the outer wall of the protective box using screws, and the output end of the drive motor penetrates the wall of the protective box and is connected to a shaft flange.

[0008] Specifically, in this technical solution, the cross-section of each of the grid bars is set as rhombus and the rhombus corners are ground into arc shape. The outer wall of the guide box is provided with a collection box at the lower end of the frame. A connecting block is fixed at the end of the collection box away from the guide box. The connecting block extends through the outer wall of the shell to the outside and is fixed with a baffle. The baffle is in close contact with the outer wall of the shell.

[0009] Specifically, in this technical solution, the inner bottom wall of the guide box is set as an inclined surface that slopes towards the guide pipe. The two ports of the guide pipe are respectively connected to the guide box and the input end of the spiral guide pipe. A sand discharge pipe is provided through the bottom wall of the shell, and the sand discharge pipe is connected to the bottom funnel flange of the cylinder.

[0010] Specifically, the mixing component includes a stirring shaft and a square aeration disc. Stirring blades are fixed to the outer wall of the stirring shaft. The aeration disc is located below the stirring shaft. Turntables are fixed to both ends of the stirring shaft. Eccentric rods are fixed to the sides of the two turntables away from the stirring shaft. Connecting plates are movably sleeved on both eccentric rods. The bottom ends of the two connecting plates are movably connected to both ends of the upper surface of the aeration disc. The outer walls at both ends of the aeration disc are in contact with and slidably connected to the walls of the purification chamber.

[0011] Specifically, in this technical solution, a stepper motor is installed on the side wall of the purification box by screws. The output end of the stepper motor extends through the box wall to the purification chamber and is fixed with a circular plate. The circular plate is fixed with a corresponding eccentric rod screw.

[0012] Specifically, the outer wall of the purification chamber is horizontally provided with an air supply pipe, and multiple air guide hoses are connected to the air supply pipe. All of the multiple air guide hoses penetrate the wall of the purification chamber and are connected to the aeration disc. One end of the air supply pipe is connected to an air pump, which is installed on the inner bottom wall of the shell by screws. The suction port of the air pump is connected to an air extraction pipe, which penetrates the shell and extends to the outside to connect with the oxygen supply source.

[0013] Specifically, in this technical solution, multiple generators are uniformly fixed on the inner wall of the spiral guide tube. The output shafts of the multiple generators are located inside the spiral guide tube and blades are fixed on the outer wall. A storage battery is installed on the side wall of the sedimentation tank through a frame. The multiple generators are connected to the storage battery through wires. The storage battery is connected to the grid assembly and the mixing assembly through wires respectively.

[0014] Specifically, in this technical solution, a flat membrane is installed in the membrane frame, the outer wall of the membrane frame is fixed to the inner wall of the purification box with screws, the top of the purification box is connected to the purification chamber and an addition tube is connected thereto, the top end of the addition tube extends through the shell to the outside, and a sealing cap is installed at the top opening of the addition tube.

[0015] Specifically, in this technical solution, the side wall of the purification box is connected to the post-filtration chamber by a drain pipe. The drain pipe extends through the shell to the outside and is connected to the conduit of the sedimentation tank. Two support plates are fixed on the lower surface of the guide box, and the bottom ends of the two support plates are fixed to the top wall of the purification box with screws.

[0016] In summary, the present invention has the following advantages: by integrating the guide box, sedimentation box and purification box into the housing, the integration of the equipment is significantly improved, the equipment footprint is effectively reduced, and the installation and maintenance costs are reduced. The smooth flow of wastewater between different treatment units is achieved through the flow of wastewater, ensuring treatment efficiency while reducing energy consumption. Through dynamic adjustment, the screen gap can be changed in real time according to the particle size of impurities in the wastewater, effectively intercepting impurities of different sizes and adapting to complex and changing water quality conditions. Then, through the cylindrical, spiral guide pipe and filter screen structure, sand and impurities in multi-source wastewater can be removed in a targeted manner. They are then mixed with coagulant aids, aerated and separated into solid and liquid in the purification tank, thus better dealing with the complex water quality conditions of multi-source construction wastewater, enhancing adaptability to complex water quality and ensuring the stability of treatment effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the device of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the housing of the present invention; Figure 3 This is a schematic diagram showing the connection between the guide box and the inlet pipe of the present invention; Figure 4 This is a schematic diagram of the grille assembly structure of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the sedimentation tank of the present invention; Figure 6 This is a schematic cross-sectional view of the spiral guide tube of the present invention; Figure 7 This is a schematic diagram of the purification box of the present invention; Figure 8 This is a schematic cross-sectional view of the purification box of the present invention; Figure 9 This is a schematic diagram of the hybrid component structure of the present invention.

[0018] Figure Descriptions: 1. Shell; 101. Sand discharge pipe; 102. Square inlet pipe; 2. Guide box; 201. Guide pipe; 202. Collection box; 2021. Connecting block; 2022. Baffle; 203. Support plate; 3. Sand settling box; 301. Cylinder; 3011. Filter screen; 302. Spiral guide pipe; 3021. Filter holes; 303. First square through hole; 4. Purification box; 401. Second square through hole; 402. Membrane frame; 4021. Flat membrane; 403. Addition pipe; 4031. Sealing cap; 404. Drain pipe; 5. Grid 501. Grid assembly; 502. Grid bars; 5021. Rotating shaft; 503. Drive gear; 5031. Shaft; 504. Drive motor; 505. Protective box; 6. Generator; 601. Blade; 602. Battery; 7. Mixing assembly; 701. Stepper motor; 7011. Circular plate; 702. Agitator shaft; 703. Agitator blade; 704. Turntable; 7041. Eccentric rod; 7042. Connecting plate; 705. Aeration disc; 706. Air guide hose; 707. Air supply pipe; 708. Air pump; 7081. Air extraction pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] It should be noted that the device is controlled by an external control system.

[0022] In this embodiment, please refer to Figures 1-8As shown, an integrated treatment device for multi-source construction wastewater includes a shell 1 and an internal guide box 2, a sedimentation tank 3, and a purification tank 4. The upper surface of the guide box 2 is open and fitted with square inlet pipes 102 of the same length. The sedimentation tank 3 is located on one side of the guide box 2 and is connected to it via the guide pipe 201. The inner bottom wall of the guide box 2 is an inclined surface sloping towards the guide pipe 201. The purification tank 4 is located below the guide box 2 and is fixed to the inner bottom wall of the shell 1 with screws. An inclined grid assembly 5 is installed in the square inlet pipe 102. The grid assembly 5 is used to dynamically adjust the grid gap to intercept impurities of different particle sizes. A particle size monitoring sensor is also installed on the inner top of the square inlet pipe 102 to monitor particulate impurities entering the wastewater and provide feedback data. According to the control system, the control system can adjust the grid assembly 5 based on feedback. The sedimentation tank 3 is equipped with a cylinder 301 inside. The bottom of the cylinder 301 is funnel-shaped with a funnel cone angle of 60°. A spiral guide pipe 302 is installed on the inner wall of the cylinder 301. Inclined plates are evenly installed inside the spiral guide pipe 302. Filter holes 3021 are opened on the outer wall of the spiral guide pipe 302. A spiral filter screen 3011 is installed on the outer wall of the cylinder 301 at the spiral guide pipe 302. The two ports of the guide pipe 201 are connected to the guide box 2 and the input end of the spiral guide pipe 302, respectively. A sand discharge pipe 101 is installed through the bottom wall of the shell 1. The sand discharge pipe 101 is connected to the bottom funnel flange of the cylinder 301. A first square through-hole 303 is provided at the bottom of the side wall of the grit chamber 3, and a second square through-hole 401 is provided at the top of the side wall of the purification chamber 4. The first square through-hole 303 and the second square through-hole 401 are connected by a connecting pipe. The interior of the purification chamber 4 is divided into a purification chamber and a filtration chamber by a membrane frame 402. A mixing component 7 is provided in the purification chamber of the purification chamber 4. The mixing component 7 is used to mix wastewater and coagulant and change the aeration position. A flat sheet membrane 4021 is installed in the membrane frame 402. The outer wall of the membrane frame 402 is connected to the purification chamber. The inner wall of the box 4 is fixed with screws. The top of the purification box 4 is connected to the purification chamber and has an addition pipe 403. The top end of the addition pipe 403 extends through the shell 1 to the outside and a sealing cap 4031 is installed at the top opening of the addition pipe 403. The side wall of the purification box 4 is connected to the filter chamber and has a drain pipe 404. The drain pipe 404 extends through the shell 1 to the outside and is connected to the conduit of the sedimentation tank. Two support plates 203 are fixed on the lower surface of the guide box 2. The bottom ends of the two support plates 203 are fixed to the top wall of the purification box 4 with screws. Multiple generators 6 are uniformly fixed on the inner wall of the spiral guide pipe 302. The output shafts of the multiple generators 6 are all located inside the spiral guide pipe 302 and blades 601 are fixed on the outer wall. A storage battery 602 is installed on the side wall of the sedimentation tank 3 through the frame. The multiple generators 6 are all connected to the storage battery 602 through wires. The storage battery 602 is connected to the grid assembly 5 and the mixing assembly 7 through wires respectively.

[0023] Multi-source construction wastewater flows into the guide box 2 through the square inlet pipe 102 via the delivery pipe. First, the concentration and particle size distribution of particulate matter in the wastewater are detected by the particle size monitoring sensor. The obtained data is transmitted to the control system, which makes a judgment and realizes the dynamic adjustment of the grid gap to effectively intercept impurities of different particle sizes. After being treated by the screen, the wastewater falls into the guide box 2 and flows down the slope into the guide pipe 201, and then into the spiral guide pipe 302 in the sedimentation tank 3. The water flows along the spiral path. During this process, sand and impurities gradually move towards the outer wall of the spiral guide pipe 302 under the combined action of centrifugal force and gravity, while the water with a relatively lower density is more concentrated in the inner area of ​​the guide pipe. This utilizes the difference in density between sand, impurities and water to achieve a preliminary separation through spiral motion. During the spiral motion, the wastewater continuously impacts the inclined plate. The inclined plate converts some of the water flow's kinetic energy into lateral force along its surface, guiding the water flow towards the filter holes 3021 and the filter screen 3011. Simultaneously, the spiral force continuously propels the water flow forward spirally within the pipe, working in conjunction with the inclined plate to allow the water to flow more effectively from the filter holes 3021 and the spiral filter screen 3011. The water first flows out through the filter holes 3021 on the outer wall of the spiral guide pipe 302. The size and distribution of the filter holes 3021 are carefully designed. The design ensures smooth water flow while preventing larger sand particles and impurities from passing through. Water flowing out of the filter holes 3021 directly enters the space between the cylinder 301 and the spiral guide pipe 302. Then, under the guidance of gravity and the spiral filter screen 3011, it flows further downward and finally enters the grit chamber 3. The spiral filter screen 3011 not only guides the water flow but also performs secondary filtration on any small impurities that may be carried in the water flowing out of the filter holes 3021, ensuring that the water entering the grit chamber 3 is relatively clear. Under the impact force generated by the continuous flow of wastewater, the sand and impurities blocked by the filter screen 3011 move along the surface of the filter screen 3011 towards the lowest end of the spiral guide pipe 302. As the sand and impurities accumulate and converge towards the lowest end, they are finally discharged from the lowest end of the spiral guide pipe 302. The discharged sand and impurities fall directly to the funnel at the bottom of the cylinder 301. Since the funnel cone angle is designed to be 60°, the sand and impurities can quickly slide and gather under the action of gravity and will not accumulate at the funnel. Finally, they are smoothly discharged from the equipment through the sand discharge pipe 101 connected to the funnel flange at the bottom of the cylinder 301, completing the separation process of sand and impurities. At the same time, the water flow in the spiral guide pipe 302 impacts the blades 601, causing the generator 6 to generate electricity. The electrical energy is stored in the battery 602, providing partial power support for the bar assembly 5 and the mixing assembly 7. Then, the wastewater in the settling tank 3 flows into the purification chamber of the purification tank 4 through the connecting pipe of the first square through hole 303 and the second square through hole 401. In the purification chamber, the mixing component 7 starts to work, fully mixing the wastewater and coagulant, and pushing the mixed wastewater to continuously wash the surface of the flat sheet membrane 4021 for solid-liquid separation. The clean water passes through the flat sheet membrane 4021 into the filtration chamber and is transported to the sedimentation tank through the drain pipe 404 for further sedimentation and treatment. This improves the integration of the equipment, effectively reduces the equipment footprint, and lowers installation and maintenance costs. The flow of wastewater enables smooth flow between different treatment units, ensuring treatment efficiency while reducing energy consumption. It can also better cope with the complex water quality of multi-source construction wastewater, enhance the adaptability to complex water quality, and ensure the stability of the treatment effect.

[0024] Please see Figure 3 and Figure 4 As shown, the grid assembly 5 includes a frame 501, which is inclined and extends to the outside through the walls of the square inlet pipe 102 at both ends. Multiple grid bars 502 are provided in the frame 501, and both ends of each grid bar 502 are rotatably connected to the inner wall of the frame 501 via a rotating shaft 5021. A protective box 505 is installed at the high end of the frame 501. Multiple meshing drive gears 503 are provided inside the protective box 505. A shaft 5031 is fixedly inserted through the center of each drive gear 503. One end of each shaft 5031 passes through the box wall of the protective box 505 and is fixedly connected to the corresponding rotating shaft 5021. The outer wall of the protective box 505 is secured by screws. A drive motor 504 is installed, and the output end of the drive motor 504 passes through the wall of the protective box 505 and is connected to a flange of a shaft 5031. The cross-section of each grid bar 502 is set as rhomboid and the rhomboid corners are ground into arc shape. The rhomboid cross-section helps to reduce water flow resistance when adjusting the gap by rotation, and at the same time enhances the interception effect of debris of different shapes. The outer wall of the guide box 2 is provided with a collection box 202 at the lower end of the frame 501. A connecting block 2021 is fixed at the end of the collection box 202 away from the guide box 2. The connecting block 2021 extends through the outer wall of the shell 1 to the outside and is fixed with a baffle 2022. The baffle 2022 is in close contact with the outer wall of the shell 1 and is connected by screws.

[0025] When it is necessary to adjust the gap between multiple grid bars 502, the control system starts the drive motor 504. The output end of the drive motor 504 drives the connected shaft 5031 to rotate, causing the installed drive gear 503 to rotate, which in turn controls the other drive gears 503 to rotate, causing the other shafts 5031 to drive the connected rotating shaft 5021 to rotate, controlling the grid bars 502 to rotate and adjust the gap between adjacent grid bars 502 so as to intercept debris of different particle sizes. The intercepted debris slides down the inclined grid bars 502 into the collection box 202 on the outer wall of the guide box 2. The operator can periodically pull the baffle 2022 and use the connecting block 2021 to pull out the collection box 202 for cleaning.

[0026] Please see Figures 7-9 As shown, the mixing component 7 includes a stirring shaft 702 and a square aeration disc 705. Each stirring blade 703 is fixed to the outer wall of the stirring shaft 702. The aeration disc 705 is located below the stirring shaft 702. Turntables 704 are fixed to both ends of the stirring shaft 702. Eccentric rods 7041 are fixed to the side of each turntable 704 away from the stirring shaft 702. Connecting plates 7042 are movably sleeved on each of the two eccentric rods 7041. The bottom ends of the two connecting plates 7042 are movably connected to the two ends of the upper surface of the aeration disc 705. The outer walls of both ends of the aeration disc 705 are in contact with the cavity wall of the purification chamber and are slidably connected. A stepper motor 701 is installed on the side wall of the purification box 4 by screws. The output end of the stepper motor 701 extends through the box wall to the purification chamber and is fixed with a circular plate 7011. The circular plate 7011 is fixed with the corresponding eccentric rod 7041 by screws. The outer wall of the purification chamber 4 is horizontally provided with an air supply pipe 707. Multiple air guide hoses 706 are connected to the air supply pipe 707. The multiple air guide hoses 706 penetrate the wall of the purification chamber 4 and are connected to the aeration disc 705. One end of the air supply pipe 707 is connected to an air pump 708. The air pump 708 is installed on the inner bottom wall of the housing 1 by screws. The suction port of the air pump 708 is connected to an air extraction pipe 7081. The air extraction pipe 7081 penetrates the housing 1 and extends to the outside to connect with the oxygen supply source.

[0027] The control system starts the stepper motor 701 and the air pump 708. The output of the stepper motor 701 drives the circular plate 7011 to rotate. The circular plate 7011 drives the turntable 704 and the stirring shaft 702 to rotate via the eccentric rod 7041, causing the stirring blades 703 to rotate as well. This thoroughly mixes the wastewater and coagulant. During this process, suspended particles and colloidal substances in the wastewater gradually aggregate into larger flocs under the action of the coagulant, creating conditions for subsequent sedimentation and separation. At the same time, the two eccentric rods 7041 follow the turntable 704 in a circular motion, driving the aeration disc 705 to move within the purification chamber via the connecting plate 7042. The aeration disc 705 moves up and down, while the air pump 708 draws oxygen from the air supply source and delivers it to the aeration disc 705 through the air guide hose 706. During the up and down movement of the aeration disc 705, it continuously releases air bubbles into the wastewater. The introduction of oxygen can increase the dissolved oxygen content in the wastewater, which helps to purify wastewater containing organic pollutants. It also allows the oxygen to be distributed more evenly in the purification chamber, increasing the contact area and time between oxygen and wastewater, and improving the oxygen transfer efficiency. Moreover, the movement of the aeration disc 705 also creates a scouring effect on its surface, effectively reducing the coverage of impurities in the wastewater on the aeration disc 705 and reducing the risk of clogging of the aeration holes.

[0028] The working principle of this invention is as follows: Construction wastewater from multiple sources flows into the guide box 2 through the square inlet pipe 102 via a delivery pipe. First, the concentration and particle size distribution of particulate matter in the wastewater are detected by a particle size monitoring sensor. The obtained data is transmitted to the control system, which makes a judgment and realizes dynamic adjustment of the grid gap. When the concentration or particle size is large, the control system starts the drive motor 504. The output end of the drive motor 504 drives the connected shaft 5031 to rotate, causing the installed drive gear 503 to rotate. This, in turn, controls the other drive gears 503 to rotate, causing the other shafts 5031 to drive the connected rotating shaft 5021 to rotate, controlling the grid bars 502 to rotate and adjusting the gap between adjacent grid bars 502 to intercept impurities of different particle sizes. The intercepted impurities slide down the inclined grid bars 502 into the collection box 202 on the outer wall of the guide box 2. The operator can periodically pull the baffle 2022 and use the connecting block 2021 to remove the collection box 202 for cleaning. After being treated by the screen, the wastewater falls into the guide box 2 and flows down the slope into the guide pipe 201, and then into the spiral guide pipe 302 in the sedimentation tank 3. The water flows along the spiral path. During this process, sand and impurities gradually move towards the outer wall of the spiral guide pipe 302 under the combined action of centrifugal force and gravity, while the water with a relatively lower density is more concentrated in the inner area of ​​the guide pipe. This utilizes the difference in density between sand, impurities and water to achieve a preliminary separation through spiral motion. During the spiral motion, the wastewater continuously impacts the inclined plate. The inclined plate converts some of the water flow's kinetic energy into lateral force along its surface, guiding the water flow towards the filter holes 3021 and the filter screen 3011. Simultaneously, the spiral force continuously propels the water flow forward spirally within the pipe, working in conjunction with the inclined plate to allow the water to flow more effectively from the filter holes 3021 and the spiral filter screen 3011. The water first flows out through the filter holes 3021 on the outer wall of the spiral guide pipe 302. The size and distribution of the filter holes 3021 are carefully designed. The design ensures smooth water flow while preventing larger sand particles and impurities from passing through. Water flowing out of the filter holes 3021 directly enters the space between the cylinder 301 and the spiral guide pipe 302. Then, under the guidance of gravity and the spiral filter screen 3011, it flows further downward and finally enters the grit chamber 3. The spiral filter screen 3011 not only guides the water flow but also performs secondary filtration on any small impurities that may be carried in the water flowing out of the filter holes 3021, ensuring that the water entering the grit chamber 3 is relatively clear. Under the impact force generated by the continuous flow of wastewater, the sand and impurities blocked by the filter screen 3011 move along the surface of the filter screen 3011 towards the lowest end of the spiral guide pipe 302. As the sand and impurities accumulate and converge towards the lowest end, they are finally discharged from the lowest end of the spiral guide pipe 302. The discharged sand and impurities fall directly to the funnel at the bottom of the cylinder 301. Since the funnel cone angle is designed to be 60°, the sand and impurities can quickly slide and gather under the action of gravity and will not accumulate at the funnel. Finally, they are smoothly discharged from the equipment through the sand discharge pipe 101 connected to the funnel flange at the bottom of the cylinder 301, completing the separation process of sand and impurities. At the same time, the water flow in the spiral guide pipe 302 impacts the blades 601, causing the generator 6 to generate electricity. The electrical energy is stored in the battery 602, providing partial power support for the bar assembly 5 and the mixing assembly 7. Then, the wastewater in the settling tank 3 flows into the purification chamber of the purification tank 4 through the connecting pipe between the first square through hole 303 and the second square through hole 401. Inside the purification chamber, the control system starts the stepper motor 701 and the air pump 708. The output end of the stepper motor 701 drives the circular plate 7011 to rotate. The circular plate 7011 drives the turntable 704 and the stirring shaft 702 to rotate through the eccentric rod 7041, so that the stirring blade 703 rotates accordingly, and the wastewater and coagulant are thoroughly mixed. During this process, the suspended particles and colloidal substances in the wastewater gradually aggregate to form larger flocs under the action of the coagulant, creating conditions for subsequent sedimentation and separation. At the same time, the two eccentric rods 7041 follow the turntable 704 in a circular motion. The aeration disc 705 moves up and down within the purification chamber via the connecting plate 7042. The air pump 708 draws oxygen from the air supply source and delivers it to the aeration disc 705 through the air guide hose 706. During the up-and-down movement of the aeration disc 705, bubbles are continuously released into the wastewater. The introduction of oxygen increases the dissolved oxygen content in the wastewater, which helps to purify wastewater containing organic pollutants. It also allows the oxygen to be distributed more evenly within the purification chamber, increasing the contact area and time between oxygen and wastewater, thus improving oxygen transfer efficiency. Furthermore, the movement of the aeration disc 705 also creates a scouring effect on its surface, effectively reducing the coverage of impurities in the wastewater on the aeration disc 705 and lowering the risk of clogging the aeration holes. The rotating stirring blades 703 also push the mixed wastewater to continuously wash the surface of the flat sheet membrane 4021 for solid-liquid separation. The clean water passes through the flat sheet membrane 4021 into the filtration chamber and is then transported to the sedimentation tank through the drain pipe 404 for further sedimentation and treatment.

[0029] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An integrated treatment device for multi-source construction wastewater, comprising a shell (1) and an internal guide box (2), a sedimentation tank (3), and a purification tank (4), wherein the upper surface of the guide box (2) is open and fitted with square inlet pipes (102) of equal length, the sedimentation tank (3) is located on one side of the guide box (2) and is connected to it via a guide pipe (201), and the purification tank (4) is located below the guide box (2) and is fixed to the bottom wall of the shell (1) with screws, characterized in that, An inclined grid assembly (5) is installed in the square inlet pipe (102). The grid assembly (5) is used to dynamically adjust the grid gap to intercept impurities of different particle sizes. The interior of the sedimentation tank (3) is provided with a cylinder (301). The bottom of the cylinder (301) is funnel-shaped and the funnel cone angle is 60°. A spiral guide pipe (302) is installed on the inner wall of the cylinder (301). Inclined plates are evenly installed inside the spiral guide pipe (302). Filter holes (3021) are opened on the outer wall of the spiral guide pipe (302). A spiral filter screen (3011) is installed on the outer wall of the cylinder (301) at the spiral guide pipe (302). The bottom of the side wall of the sedimentation tank (3) is provided with a first square through hole (303), and the top of the side wall of the purification tank (4) is provided with a second square through hole (401). The first square through hole (303) and the second square through hole (401) are connected by a connecting pipe. The interior of the purification tank (4) is divided into a purification chamber and a filtration chamber by a membrane frame (402). A mixing component (7) is provided in the purification chamber of the purification tank (4). The mixing component (7) is used to mix the wastewater and the coagulant and change the aeration position.

2. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, The grid assembly (5) includes a frame (501), which is inclined and extends to the outside through the wall of a square inlet pipe (102) at both ends. The frame (501) contains multiple grid bars (502), each of which is rotatably connected to the inner wall of the frame (501) via a pivot (5021). A protective box (505) is installed at the high end of the frame (501), and the protective box (505) contains multiple interlocking... The drive gears (503) are connected, and a shaft (5031) is fixedly inserted through the center of each drive gear (503). One end of each shaft (5031) passes through the wall of the protective box (505) and is fixedly connected to the corresponding rotating shaft (5021). A drive motor (504) is installed on the outer wall of the protective box (505) by screws. The output end of the drive motor (504) passes through the wall of the protective box (505) and is connected to a flange of a shaft (5031).

3. The integrated treatment equipment for multi-source construction wastewater according to claim 2, characterized in that, Each of the grid bars (502) has a cross-section of rhombus and the rhombus corners are ground into arc shape. The outer wall of the guide box (2) is provided with a collection box (202) at the lower end of the frame (501). A connecting block (2021) is fixed at the end of the collection box (202) away from the guide box (2). The connecting block (2021) extends through the outer wall of the shell (1) to the outside and is fixed with a baffle (2022). The baffle (2022) is in close contact with the outer wall of the shell (1).

4. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, The inner bottom wall of the guide box (2) is set as an inclined surface that slopes towards the guide pipe (201). The two ports of the guide pipe (201) are respectively connected to the guide box (2) and the input end of the spiral guide pipe (302). The bottom wall of the shell (1) is provided with a sand discharge pipe (101), which is connected to the bottom funnel flange of the cylinder (301).

5. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, The mixing component (7) includes a stirring shaft (702) and a square aeration disc (705). The outer wall of the stirring shaft (702) is fixed with stirring blades (703). The aeration disc (705) is located below the stirring shaft (702). Turntables (704) are fixed at both ends of the stirring shaft (702). An eccentric rod (7041) is fixed on the side of the two turntables (704) away from the stirring shaft (702). A connecting plate (7042) is movably sleeved on the two eccentric rods (7041). The bottom ends of the two connecting plates (7042) are movably connected to the two ends of the upper surface of the aeration disc (705). The outer walls of both ends of the aeration disc (705) are in contact with the cavity wall of the purification chamber and are slidably connected.

6. The integrated treatment equipment for multi-source construction wastewater according to claim 5, characterized in that, A stepper motor (701) is installed on the side wall of the purification box (4) by screws. The output end of the stepper motor (701) extends through the box wall to the purification chamber and is fixed with a circular plate (7011). The circular plate (7011) is fixed with a corresponding eccentric rod (7041) by screws.

7. The integrated treatment equipment for multi-source construction wastewater according to claim 5, characterized in that, The outer wall of the purification box (4) is horizontally provided with an air supply pipe (707). Multiple air guide hoses (706) are connected to the air supply pipe (707). The multiple air guide hoses (706) all penetrate the box wall of the purification box (4) and are connected to the aeration plate (705). One end of the air supply pipe (707) is connected to an air pump (708). The air pump (708) is installed on the inner bottom wall of the shell (1) by screws. The suction port of the air pump (708) is connected to an air extraction pipe (7081). The air extraction pipe (7081) penetrates the shell (1) and extends to the outside to connect with the oxygen supply source.

8. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, Multiple generators (6) are uniformly fixed on the inner wall of the spiral guide pipe (302). The output shafts of the multiple generators (6) are located inside the spiral guide pipe (302) and blades (601) are fixed on the outer wall. A storage battery (602) is installed on the side wall of the sedimentation tank (3) through a frame. The multiple generators (6) are connected to the storage battery (602) through wires. The storage battery (602) is connected to the grid assembly (5) and the mixing assembly (7) through wires respectively.

9. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, A flat membrane (4021) is installed in the membrane frame (402). The outer wall of the membrane frame (402) is fixed to the inner wall of the purification box (4) with screws. The top of the purification box (4) is connected to the purification chamber by an addition tube (403). The top end of the addition tube (403) extends through the shell (1) to the outside, and a sealing cap (4031) is installed at the top opening of the addition tube (403).

10. The integrated treatment equipment for multi-source construction wastewater according to claim 1, characterized in that, The side wall of the purification box (4) is connected to the filter chamber by a drain pipe (404). The drain pipe (404) extends through the shell (1) to the outside and is connected to the conduit of the sedimentation tank. Two support plates (203) are fixed on the lower surface of the guide box (2). The bottom ends of the two support plates (203) are fixed to the top wall of the purification box (4) by screws.

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