Mixing and regulating tank for industrial park production wastewater and use method of mixing and regulating tank

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a mixing and regulating tank for industrial park production wastewater and a using method thereof.The mixing and regulating tank comprises a tank body, an inner cavity of the tank body is jointly divided into a water inlet area, a water drainage area and a sludge settling area by a horizontal partition plate and a vertical filter cartridge, and a sludge guide hole is formed in the horizontal partition plate; a liquid inlet pipe is connected to the top end of the water inlet area of the tank body, a liquid mixing assembly and a filter cartridge cleaning assembly are mounted in the water inlet area, and a liquid outlet pipe is connected to the side part of the drainage area; a sludge collecting cover is mounted at the bottom of the sludge settling area, a sludge discharging auger is mounted in the sludge collecting cover, and a sludge pump is arranged on the outer side of the bottom of the tank body. Wastewater in the water inlet area is fully stirred and mixed through the liquid mixing assembly, so that components of the wastewater are preliminarily and uniformly distributed; sewage particles in wastewater can enter the sludge settling area through the sludge guide holes to be settled and accumulated, and settled sludge can be transferred and treated in time through the sludge discharge auger and the sludge pump.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a mixing and equalization tank for industrial wastewater and its usage method. Background Technology

[0002] The mixing and equalization tank for industrial wastewater is a key pretreatment unit in the wastewater treatment system. Its main function is to balance water quality and quantity and buffer the impact of production fluctuations on subsequent processes. Due to the large differences in production cycles among enterprises within the industrial park, the discharged wastewater exhibits significant fluctuations in flow rate and pollutant concentrations (such as COD, pH, and heavy metals). The mixing and equalization tank thoroughly mixes wastewater flowing in at different times, temporarily storing peak discharges within its volume to stabilize the effluent flow rate. Simultaneously, it dilutes high-concentration wastewater and neutralizes extreme pH values, preventing the collapse of the biological treatment system due to sudden load shocks. Furthermore, natural sedimentation within the tank can initially separate some suspended solids, and the homogenized water quality facilitates parameter control in subsequent coagulation and biological processes, improving overall treatment efficiency. Through temporal extension and spatial mixing, this tank achieves "peak shaving and valley filling" of wastewater characteristics, providing continuous and stable treatment conditions for downstream processes and serving as a crucial buffer barrier to ensure the wastewater treatment plant meets discharge standards.

[0003] The existing mixing and equalization tanks for industrial wastewater have several shortcomings. First, they cannot achieve thorough mixing between the upper and lower areas, nor can they promptly transfer and treat the sediment in the lower part. Second, they cannot be used in multiple stages, are not suitable for modular production, and have high operating costs.

[0004] In view of this, the inventors hope to optimize and improve the existing mixing and equalization tanks for industrial wastewater in industrial parks. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the traditional technology and to provide a mixing and equalization tank for industrial wastewater and its usage method.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] This invention provides a mixing and equalization tank for industrial wastewater. The mixing and equalization tank includes a tank body, a horizontal baffle, vertical filter cartridges, an inlet pipe, a mixing assembly, a filter cartridge cleaning assembly, an outlet pipe, a sludge collection hood, a sludge discharge auger, and a sludge pump. The inner cavity of the tank body is divided into an inlet zone, a drainage zone, and a sludge sedimentation zone by the horizontal baffle and the vertical filter cartridges mounted thereon. The drainage zone is arranged around the periphery of the inlet zone, and the sludge sedimentation zone is located below the inlet and drainage zones. The horizontal baffle has several sludge guide holes for connecting the inlet zone and the sludge sedimentation zone. The inlet pipe is connected to the top of the tank body in the inlet zone, and the mixing assembly and filter cartridge cleaning assembly are installed in the tank body in the inlet zone. The outlet pipe is connected to the side of the tank body in the drainage zone. A sludge collection hood is installed at the bottom of the tank body in the sludge sedimentation zone, and a sludge discharge auger is installed in the sludge collection hood. A sludge pump is installed on the bottom outer side of the tank body near the sludge discharge end of the sludge discharge auger.

[0008] Furthermore, in the aforementioned industrial park's wastewater mixing and regulating tank, multiple mixing and regulating tanks can be used in parallel, with the outlet pipe of the previous mixing and regulating tank connected to the inlet pipe of the next mixing and regulating tank when used in parallel.

[0009] Furthermore, in the mixing and regulating tank for the production wastewater of the aforementioned industrial park, the tank body is a closed tank body with a double-layer structure, the outer layer being made of stainless steel and the inner layer being made of corrosion-resistant plastic.

[0010] Furthermore, in the mixing and regulating tank for the industrial wastewater of the aforementioned industrial park, both the horizontal baffle and the vertical filter cylinder are made of stainless steel. The vertical filter cylinder has filter holes evenly distributed on its body. The vertical filter cylinder is a cylindrical tube, and its two ends are fixed to the horizontal baffle and the inner wall of the tank top plate, respectively.

[0011] Furthermore, in the mixing and equalization tank for the industrial wastewater of the aforementioned industrial park, the mixing assembly includes an annular cover, a rotary drive, a driving gear, a driven gear, a stirring shaft, a positioning block, and stirring blades. The rotary drive is installed inside the annular cover, and a hollow annular driving gear is installed on the outer side of the movable ring of the rotary drive. Multiple stirring shafts are circumferentially threaded through the bottom plate of the annular cover. A driven gear that meshes with the driving gear is installed at the top of the stirring shaft, and a positioning block that provides movable support is installed at the bottom of the stirring shaft. The positioning block is fixed to a horizontal partition, and multiple rings of stirring blades are installed on the outer side of the stirring shaft.

[0012] Furthermore, in the mixing and equalization tank for the industrial wastewater of the aforementioned industrial park, the filter cartridge cleaning assembly includes a lead screw motor, a lead screw, and a cleaning scraper. The lead screw motor is installed on the outer wall of the top plate of the tank body, and the output end of the lead screw motor is connected to a lead screw that extends into the tank body. A cleaning scraper is sleeved on the outer side of the lead screw. The cleaning scraper consists of a movable block and a scraper brush installed on its outer side. A lead screw hole that mates with the lead screw is opened at the center of the movable block. Multiple clearance holes are opened around the lead screw hole on the movable block to facilitate the avoidance of the corresponding stirring shaft and its stirring blades.

[0013] Furthermore, the mixing and equalization tank for the industrial wastewater in the aforementioned industrial park also includes a controller, which is connected to the mixing assembly, the filter cartridge cleaning assembly, the sludge discharge auger, and the sludge pump.

[0014] Furthermore, the method of using the mixing and equalization tank for the production wastewater in the aforementioned industrial park includes the following steps:

[0015] S1. Liquid Inlet and Preliminary Mixing: Industrial wastewater is introduced into the inlet area of ​​the pool through the liquid inlet pipe, and the mixing component is started at the same time. The rotary drive drives the drive gear to rotate, and the drive gear meshes with the driven gear, thereby driving multiple stirring shafts to rotate. The stirring blades on the stirring shafts stir and mix the wastewater in the inlet area, so that the various components in the wastewater are initially evenly distributed.

[0016] S2. Filtration and Sedimentation: During the mixing process, the wastewater is filtered through the vertical filter cylinder, and some impurities are trapped inside the filter cylinder. At the same time, the sludge particles in the wastewater enter the sludge sedimentation zone through the mud guide holes on the horizontal baffle, where they gradually settle and accumulate. As the wastewater continues to enter and be treated, the wastewater in the drainage zone becomes relatively clear. The treated wastewater can be led out through the liquid outlet pipe for use in subsequent processes.

[0017] S3. Regular Cleaning and Sludge Removal: Regularly activate the filter cartridge cleaning assembly. The screw motor drives the screw to rotate, and the movable block on the screw moves up and down along the screw. The scraper on the outside of the movable block scrapes and cleans the inner wall of the vertical filter cartridge, removing impurities attached to the inner wall of the filter cartridge to prevent clogging and ensure filtration effect. When a certain amount of sludge accumulates in the sludge settling area, activate the sludge discharge auger to transport the sludge to the sludge discharge end. At the same time, activate the sludge pump to extract the sludge from the discharge end of the tank for centralized treatment.

[0018] The beneficial effects of this invention are:

[0019] 1. Good mixing effect: The mixing component enables the wastewater in the inlet area to be fully stirred and mixed, so that the wastewater components are initially evenly distributed, overcoming the problem that the existing technology cannot achieve full mixing in the upper and lower areas.

[0020] 2. Timely sedimentation treatment: A sludge sedimentation zone is provided, where sludge particles in the wastewater can enter the zone through the sludge guide holes on the horizontal baffle to settle and accumulate. The settled sludge can be transferred and treated in a timely manner through the sludge discharge auger and sludge pump, which solves the problem that existing technologies cannot achieve timely transfer and treatment of the lower sedimentation.

[0021] 3. Multi-stage operation is possible: Multiple mixing and equalization tanks can be used in parallel. When used in parallel, the outlet pipe of the previous mixing and equalization tank and the inlet pipe of the next mixing and equalization tank are connected to each other through a flange. This is suitable for modular production and reduces the cost of use.

[0022] 4. It has a filtration function: it uses a vertical filter cartridge to filter wastewater, intercepting some impurities and further purifying the wastewater.

[0023] 5. Automatic cleaning: Equipped with a filter cartridge cleaning component, it can periodically scrape and clean the inner wall of the vertical filter cartridge to prevent filter cartridge blockage and ensure filtration effect.

[0024] 6. Reasonable pool structure: The pool is enclosed and adopts a double-layer structure, with an outer layer of stainless steel and an inner layer of anti-corrosion plastic, which improves the durability and corrosion resistance of the pool.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the mixing and regulating tank of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the combined use of the mixing and regulating tanks of the present invention;

[0029] Figure 3 This is a schematic diagram of the mixing component in this invention;

[0030] Figure 4 This is a magnified schematic diagram of a portion of the mixing component in this invention;

[0031] Figure 5 This is a schematic diagram of the rotary drive in this invention;

[0032] Figure 6 This is a schematic diagram of the filter cartridge cleaning assembly in this invention;

[0033] Figure 7 This is a schematic diagram of the cleaning scraper in this invention;

[0034] Figure 8 This is a schematic diagram of the sludge removal auger in this invention;

[0035] In the attached diagram, the component numbers are as follows:

[0036] 1-Pool body, 2-Horizontal baffle, 3-Vertical filter cartridge, 4-Inlet pipe, 5-Mixing assembly, 51-Annular cover, 52-Rotary drive, 53-Drive gear, 54-Driven gear, 55-Agitator shaft, 56-Positioning block, 57-Agitator blade, 6-Filter cartridge cleaning assembly, 61-Screw motor, 62-Screw, 63-Cleaning scraper, 631-Moving block, 632-Scraper, 633-Screw hole, 634-Allowing hole, 7-Outlet pipe, 8-Sludge guide hole, 9-Sludge collection cover, 10-Sludge discharge auger, 11-Sludge pump. Detailed Implementation

[0037] 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.

[0038] like Figures 1-8 As shown, this embodiment provides a mixing and equalization tank for industrial wastewater. The mixing and equalization tank includes a tank body 1, a horizontal baffle 2, a vertical filter cartridge 3, an inlet pipe 4, a mixing assembly 5, a filter cartridge cleaning assembly 6, an outlet pipe 7, a sludge collection hood 9, a sludge discharge auger 10, and a sludge pump 11. The inner cavity of the tank body 1 is divided into an inlet area, a drainage area, and a sludge sedimentation area by a horizontal partition 2 and a vertical filter cartridge 3 installed on it. The drainage area is arranged around the periphery of the inlet area, and the sludge sedimentation area is located below the inlet and drainage areas. Several sludge guide holes 8 are opened on the horizontal partition 2 to connect the inlet area and the sludge sedimentation area. The top of the tank body 1 in the inlet area is connected to an inlet pipe 4. The tank body 1 in the inlet area is equipped with a mixing component 5 and a filter cartridge cleaning component 6. The side of the tank body 1 in the drainage area is connected to an outlet pipe 7. The bottom of the tank body 1 in the sludge sedimentation area is equipped with a sludge collection hood 9. A sludge discharge auger 10 is installed in the sludge collection hood 9. A sludge pump 11 is set on the bottom outer side of the tank body 1 near the sludge discharge end of the sludge discharge auger 10.

[0039] In this embodiment, multiple mixing and conditioning tanks can be used in parallel. When used in parallel, the outlet pipe 7 of the previous mixing and conditioning tank and the inlet pipe 4 of the next mixing and conditioning tank are connected to each other through a flange.

[0040] In this embodiment, the pool body 1 is a closed pool body with a double-layer structure. The outer layer is made of stainless steel and the inner layer is made of anti-corrosion plastic.

[0041] In this embodiment, both the horizontal partition 2 and the vertical filter cylinder 3 are made of stainless steel. The vertical filter cylinder 3 has filter holes evenly distributed on its body. The vertical filter cylinder 3 is a cylindrical cylinder, and its two ends are fixed to the horizontal partition 2 and the inner wall of the top plate of the pool body 1, respectively.

[0042] In this embodiment, the mixing assembly 5 includes an annular cover 51, a rotary driver 52, a drive gear 53, a driven gear 54, a stirring shaft 55, a positioning block 56, and stirring blades 57. The rotary driver 52 is installed inside the annular cover 51. A hollow ring-shaped drive gear 53 is installed on the outer side of the movable ring of the rotary driver 52. Multiple stirring shafts 55 are circumferentially threaded through the bottom plate of the annular cover 51. A driven gear 54 that meshes with the drive gear 53 is installed at the top of the stirring shaft 55. A positioning block 56 that provides movable support is installed at the bottom of the stirring shaft 55. The positioning block 56 is fixed on the horizontal partition 2. Multiple rings of stirring blades 57 are installed on the outer side of the stirring shaft 55.

[0043] In this embodiment, the filter cartridge cleaning assembly 6 includes a lead screw motor 61, a lead screw 62, and a cleaning scraper 63. The lead screw motor 61 is installed on the outer wall of the top plate of the tank body 1. The output end of the lead screw motor 61 is connected to the lead screw 62, which extends into the tank body 1. The cleaning scraper 63 is sleeved on the outer side of the lead screw 62. The cleaning scraper 63 consists of a movable block 631 and a scraper 632 installed on its outer side. The center of the movable block 631 has a lead screw hole 633 that mates with the lead screw 62. The movable block 631 has multiple clearance holes 634 around the lead screw hole 633 to facilitate the avoidance of the corresponding stirring shaft 55 and its stirring blades 57.

[0044] In this embodiment, a controller is also included, which is connected to the mixing component 5, the filter cartridge cleaning component 6, the sludge discharge auger 10 and the sludge pump 11 respectively.

[0045] This embodiment also provides a method for using a mixing and equalization tank for industrial wastewater in an industrial park, including the following steps:

[0046] S1. Liquid Inlet and Preliminary Mixing: Industrial wastewater is introduced into the inlet area of ​​pool 1 through inlet pipe 4, and the mixing component 5 is started at the same time; the rotary drive 52 drives the drive gear 53 to rotate, and the drive gear 53 meshes with the driven gear 54, thereby driving multiple stirring shafts 55 to rotate. The stirring blades 57 of the stirring shafts 55 stir and mix the wastewater in the inlet area, so that the various components in the wastewater are initially evenly distributed.

[0047] S2. Filtration and sedimentation: During the mixing process, the wastewater is filtered through the vertical filter cylinder 3, and some impurities are trapped inside the filter cylinder. At the same time, the sludge particles in the wastewater enter the sludge sedimentation zone through the mud guide holes 8 on the horizontal baffle 2, where they gradually settle and accumulate. As the wastewater continues to enter and be treated, the wastewater in the drainage zone becomes relatively clear. The treated wastewater can be led out through the liquid outlet pipe 7 for use in subsequent processes.

[0048] S3. Regular cleaning and sludge removal: Regularly start the filter cartridge cleaning assembly 6. The screw motor 61 drives the screw 62 to rotate. The movable block 631 on the screw 62 moves up and down along the screw 62 (because the vertical filter cartridge 3 is a non-circular structure, it will restrict the rotation of the movable block 631). The scraper 632 on the outside of the movable block 631 scrapes and cleans the inner wall of the vertical filter cartridge 3, scraping off the impurities attached to the inner wall of the vertical filter cartridge 3, preventing the filter cartridge from clogging and ensuring the filtration effect. When a certain amount of sludge accumulates in the sludge sedimentation area, start the sludge discharge auger 10. The sludge discharge auger 10 transports the sludge to the sludge discharge end. At the same time, start the sludge pump 11 to pump the sludge from the sludge discharge end out of the tank 1 for centralized treatment.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mixing and equalization tank for industrial wastewater in an industrial park, characterized in that, The mixing and equalization tank includes a tank body, a horizontal baffle, vertical filter cartridges, an inlet pipe, a mixing assembly, a filter cartridge cleaning assembly, an outlet pipe, a sludge collection hood, a sludge discharge auger, and a sludge pump. The inner cavity of the tank body is divided into an inlet zone, a drainage zone, and a sludge settling zone by the horizontal baffle and the vertical filter cartridges mounted thereon. The drainage zone is arranged around the perimeter of the inlet zone, and the sludge settling zone is located below the inlet and drainage zones. The horizontal baffle has several sludge guide holes for connecting the inlet zone and the sludge settling zone. The inlet pipe is connected to the top of the tank body in the inlet zone, and the mixing assembly and filter cartridge cleaning assembly are installed in the tank body in the inlet zone. The outlet pipe is connected to the side of the tank body in the drainage zone. A sludge collection hood is installed at the bottom of the tank body in the sludge settling zone, and a sludge discharge auger is installed in the sludge collection hood. A sludge pump is installed on the bottom outer side of the tank body near the sludge discharge end of the sludge discharge auger.

2. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, Multiple mixing and conditioning tanks can be used in parallel, and when used in parallel, the outlet pipe of the previous mixing and conditioning tank is connected to the inlet pipe of the next mixing and conditioning tank.

3. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, The pool is a closed pool with a double-layer structure. The outer layer is made of stainless steel and the inner layer is made of corrosion-resistant plastic.

4. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, Both the horizontal partition and the vertical filter cylinder are made of stainless steel. The vertical filter cylinder has filter holes evenly distributed on its body. The vertical filter cylinder is a cylindrical cylinder with its two ends fixed to the horizontal partition and the inner wall of the top plate of the pool, respectively.

5. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, The mixing assembly includes an annular cover, a rotary drive, a drive gear, a driven gear, a stirring shaft, a positioning block, and stirring blades. The rotary drive is installed inside the annular cover. A hollow ring-shaped drive gear is installed on the outer side of the movable ring of the rotary drive. Multiple stirring shafts are circumferentially threaded through the bottom plate of the annular cover. A driven gear that meshes with the drive gear is installed at the top of the stirring shaft. A positioning block that provides movable support is installed at the bottom of the stirring shaft. The positioning block is fixed to a horizontal partition. Multiple rings of stirring blades are installed on the outer side of the stirring shaft.

6. The mixing and equalization tank for industrial wastewater according to claim 5, characterized in that, The filter cartridge cleaning assembly includes a lead screw motor, a lead screw, and a cleaning scraper. The lead screw motor is installed on the outer wall of the top plate of the tank. The output end of the lead screw motor is connected to a lead screw that extends into the tank. A cleaning scraper is sleeved on the outside of the lead screw. The cleaning scraper consists of a movable block and a scraper brush installed on its outside. A lead screw hole that mates with the lead screw is opened at the center of the movable block. Multiple avoidance holes are opened around the lead screw hole on the movable block to facilitate the avoidance of the corresponding stirring shaft and its stirring blades.

7. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, It also includes a controller, which is connected to the mixing assembly, the filter cartridge cleaning assembly, the sludge discharge auger, and the sludge pump.

8. The mixing and equalization tank for industrial wastewater according to claim 1, characterized in that, Its usage includes the following steps: S1. Liquid Inlet and Preliminary Mixing: Industrial wastewater is introduced into the inlet area of ​​the pool through the liquid inlet pipe, and the mixing component is started at the same time. The rotary drive drives the drive gear to rotate, and the drive gear meshes with the driven gear, thereby driving multiple stirring shafts to rotate. The stirring blades on the stirring shafts stir and mix the wastewater in the inlet area, so that the various components in the wastewater are initially evenly distributed. S2. Filtration and Sedimentation: During the mixing process, the wastewater is filtered through the vertical filter cylinder, and some impurities are trapped inside the filter cylinder. At the same time, the sludge particles in the wastewater enter the sludge sedimentation zone through the mud guide holes on the horizontal baffle, where they gradually settle and accumulate. As the wastewater continues to enter and be treated, the wastewater in the drainage zone becomes relatively clear. The treated wastewater can be led out through the liquid outlet pipe for use in subsequent processes. S3. Regular Cleaning and Sludge Removal: Regularly activate the filter cartridge cleaning assembly. The screw motor drives the screw to rotate, and the movable block on the screw moves up and down along the screw. The scraper on the outside of the movable block scrapes and cleans the inner wall of the vertical filter cartridge, removing impurities attached to the inner wall of the filter cartridge to prevent clogging and ensure filtration effect. When a certain amount of sludge accumulates in the sludge settling area, activate the sludge discharge auger to transport the sludge to the sludge discharge end. At the same time, activate the sludge pump to extract the sludge from the discharge end of the tank for centralized treatment.

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