A sewage treatment skid using micro-bubble technology

Abstract

The application discloses a sewage treatment pry device using micro-bubble technology and relates to the technical field of sewage treatment.The sewage treatment pry device comprises a supporting unit and a filtering unit.The supporting unit comprises a base, supporting arms and supporting rods.The supporting arms are arranged on the two sides of the base, and the supporting rods are arranged in the middle of the two supporting arms.The filtering unit comprises sewage pipes, a filtering barrel, a driving part, end covers, scrapers and filter screens.The sewage pipes penetrate into the inside of the filtering barrel on the two sides.The driving part is arranged on the side of the filtering barrel.The scrapers and the filter screens are coaxially matched.The sewage to be treated by the sewage treatment pry device is preliminarily filtered, the frequency of manual intervention in the sewage treatment process is reduced, and the failure of the sewage treatment device is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment skid using microbubble technology. Background Technology

[0002] Currently, pretreatment technologies for oilfield wastewater mainly include oil-water separation, coagulation sedimentation, flotation, and filtration. Among these, filtration technology is the primary means of removing suspended solids, achieving a removal rate of over 90%. Depending on the filter medium, filtration technologies can be categorized into screen filtration, microfiltration, membrane filtration, and depth filtration.

[0003] In the field of oilfield wastewater treatment, existing technologies have many limitations. Gravity separation oil removal technology has a large processing capacity and low operating cost, but it requires a large area, high infrastructure investment, poor treatment effect on emulsified oil, and long wastewater retention time. Air flotation separation oil and suspended solids removal technology can improve oil removal efficiency, but it requires the addition of flotation agents or coagulants and is prone to producing scum. Filtration technology produces good effluent quality, but it has high operating costs, weak adaptability to load changes, and is prone to clogging. Furthermore, due to the limitation of filter media particle size, it is impossible to further improve filtration accuracy and efficiency. Skid-mounted treatment plants are difficult to adapt to operating conditions and have problems such as unreasonable process design and incomplete supporting facilities.

[0004] In summary, existing oilfield wastewater treatment technologies still have many shortcomings in terms of treatment efficiency, adaptability, and cost control, and need further optimization and improvement. Therefore, it is necessary to use a wastewater treatment skid-mounted system that utilizes microbubble technology to further treat oilfield wastewater. Before using microbubble technology to treat wastewater, it is necessary to perform preliminary coarse filtration on the wastewater. Summary of the Invention

[0005] In view of the problem that the filtering devices in the above or existing technologies require manual removal of floating objects, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a wastewater treatment skid using microbubble technology.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a wastewater treatment skid using microbubble technology, comprising a microbubble generator, a microflow field mixer, a wastewater filter tank, a circulating pump, an air filter tank, a chemical filter tank, a chemical pump, an instrument control system, and an air filter; the wastewater filter tank comprises a support unit (100) and a filter unit (200), the support unit comprising a base, support arms, and support rods, the support arms being disposed on both sides of the base, and the support rods being disposed in the middle of the two support arms; the filter unit comprises a wastewater pipe, a filter bucket, a drive unit, an end cap, a scraper, and a filter screen, the wastewater pipe penetrating through both sides into the interior of the filter bucket, the drive unit being disposed on the side of the filter bucket, and the scraper and the filter screen coaxially engaged.

[0008] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the base is characterized by comprising a wastewater tank, a particle tank, and a vertical rod, wherein the wastewater tank and the particle tank are spaced apart, and the vertical rod is disposed on the inner side of the base.

[0009] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the support arm includes a hinge hole located at the end of the support arm.

[0010] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the support rod includes a connecting sleeve disposed in the middle of the support rod.

[0011] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the wastewater pipe includes branch pipes, which are respectively disposed on both sides of the wastewater pipe, and the ends of the branch pipes are provided with discharge ports.

[0012] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the filter bucket includes a protrusion, a sludge discharge trough, and a sludge discharge trough. The protrusion is disposed on the side of the filter bucket, and the sludge discharge trough and the sludge discharge trough are respectively disposed on both sides of the bottom of the filter bucket. The protrusion also includes a connecting gear disposed on its side.

[0013] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the drive unit includes a drive shaft that extends through the drive unit. A filter gear and a sludge scraper gear are respectively provided at both ends of the drive shaft, and the filter gear and the sludge scraper gear are aligned.

[0014] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the end cap includes a mating block and an inlet hole, the mating block being disposed on the side of the end cap and the inlet hole being disposed in the middle of the end cap.

[0015] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the scraper includes a driven gear disposed at its end, the driven gear includes a cam and an arc-shaped blade, the arc-shaped blade is disposed around the scraper, and the cam is disposed on the side of the driven gear.

[0016] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, the filter screen includes a drive gear and a rotating screen, the rotating screen includes mesh holes arranged in an array on its side, and the drive gear is arranged on the side of the filter screen.

[0017] As a preferred embodiment of the wastewater treatment skid-mounted system using microbubble technology described in this invention, the wastewater treatment agents are pumped into the microflow field mixer by the agent pump and fully mixed with the wastewater. The various agents act on the wastewater and then enter the microbubble generator together.

[0018] As a preferred embodiment of the wastewater treatment skid using microbubble technology described in this invention, a branch line is added to the inlet of the chemical pump to connect clean water for periodic flushing of the microbubble generator when the wastewater is dirty.

[0019] The beneficial effects of this invention are as follows: By passing sewage into a coarse filtration device, the sewage is directly sprayed onto the filter screen. During the rotation of the filter screen, the accumulation of solid matter in the sewage is avoided, thus maintaining a good filtration state. The rotation direction of the scraper is opposite to that of the filter screen, and the relative movement with the filter screen scrapes off the dirt on the filter screen, ensuring continuous and stable filtration. At the same time, when the scraper rotates, it forms an intermittent pendulum motion with the structure of the external support unit, which is beneficial to create an oscillating effect on the sewage pipe and reduce the clogging effect caused by dirt adhesion. Attached Figure Description

[0020] 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 accompanying 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.

[0021] Figure 1 This is a structural diagram of the main body of a skid-mounted coarse filtration unit for microbubble wastewater treatment.

[0022] Figure 2 This is a side view of the main body of a skid-mounted coarse filtration unit for microbubble wastewater treatment.

[0023] Figure 3 This is a bottom view of the main body of a skid-mounted coarse filtration unit for microbubble wastewater treatment.

[0024] Figure 4 This is an internal cross-sectional view of a skid-mounted coarse filtration unit for microbubble wastewater treatment.

[0025] Figure 5 This is a schematic diagram of the filter structure of a skid-mounted coarse filtration device for microbubble wastewater treatment.

[0026] Figure 6 This is a schematic diagram of the moving structure of a skid-mounted coarse filtration device for microbubble wastewater treatment.

[0027] Figure 7This is an exploded view of the filter structure of a skid-mounted coarse filtration unit for microbubble wastewater treatment.

[0028] Figure 8 This is a schematic diagram of the overall structure of a skid-mounted wastewater treatment system used for microbubble wastewater treatment.

[0029] Figure 9 The effect of different catalyst contents on COD removal in a skid-mounted microbubble wastewater treatment system.

[0030] Figure 10 The effect of different ozone flow rates on COD removal in a skid-mounted microbubble wastewater treatment system.

[0031] Figure 11 The optimal conditions for the COD change over time are shown in the figure.

[0032] Figure 12 A comparison of wastewater treatment performance using skid-mounted microbubble wastewater treatment systems. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0036] Example 1, referring to Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a wastewater treatment skid using microbubble technology, which includes a microbubble generator, a microflow field mixer, a wastewater filter tank, a circulating pump, an air filter tank, a chemical filter tank, a chemical pump, an instrument control system, and an air filter. The wastewater filter tank includes a support unit (100) and a filter unit (200). The support unit 100 performs the support function, and the filter unit 200 performs the preliminary filtration of wastewater.

[0037] This skid-mounted device uses a microbubble generator to disperse gas into micron-sized bubbles in a liquid, increasing the specific surface area of ​​gas-liquid contact, enhancing gas-liquid reaction efficiency, and shortening reaction residence time. It can be used in oilfield wastewater desulfurization, petrochemical wastewater treatment, and other gas-liquid reaction applications. Furthermore, by adjusting parameters such as the microbubble generator's dimensions, wastewater inlet and outlet pipelines, and the circulation pump's flow rate, it can meet the demands of high-volume production loads on-site.

[0038] Specifically, the wastewater treatment agents are pumped into the microflow field mixer 102 by the agent pump 108 and fully mixed with the wastewater. The various agents act on the wastewater and then enter the microbubble generator 101 together.

[0039] It should be noted that the material of the microbubble generator is the same as that of the pipeline and the sewage filter tank, generally 304 or 316 stainless steel. In special cases with high corrosion requirements, special materials such as titanium alloy or Harbin alloy can be selected. In some cases, non-metallic materials such as polytetrafluoroethylene or PEEK can be used.

[0040] Furthermore, the wastewater filter tank 103 is equipped with an external circulation system, and the overall residence time of the wastewater is adjusted by regulating the flow rate of the external circulation pump. The external circulation system of the wastewater filter tank includes an anti-foaming spray device to prevent large amounts of foam generated during wastewater treatment from leaking into the atmosphere through the vent and causing pollution.

[0041] The wastewater buffer filtration operates at atmospheric pressure (using air as the gas source). If only a consumable air source is used, a closed-loop design can be implemented. The skid-mounted pipeline is equipped with pressure regulators and flow monitoring instruments, allowing for pressure adjustment based on the influent flow rate to ensure the inlet pressure for normal operation of the microbubble generator and guarantee smooth self-priming of gas. Gas enters the system through self-priming, eliminating the need for an additional compressor and saving energy.

[0042] An emergency shut-off valve is installed on the sewage inlet pipeline to quickly cut off the water supply when problems occur in the user's upstream or downstream devices. A switch valve is installed on the air inlet pipeline to quickly cut off the air supply when the water supply fails, preventing sewage from flowing back into the air pipeline.

[0043] Preferably, a branch line is added at the inlet of the chemical pump (108) to connect clean water to periodically flush the microbubble generator (101) when the sewage is dirty.

[0044] This skid-mounted unit uses PLC automatic control, which can also be switched manually. All process parameters are monitored with alarms and interlocks, and remote monitoring is possible via mobile phone, enabling unattended operation. The skid-mounted unit adopts an integrated container skid-mounted design, making it mobile and easy to transport, and can meet customized needs in some remote locations.

[0045] Specifically, the support unit 100 includes a base 101, support arms 102, and support rods 103. The support arms 102 are located on both sides of the base 101, and the support rods 103 are located in the middle of the two support arms 102. The filtration unit 200 includes a sewage pipe 201, a filter bucket 202, a drive unit 203, an end cap 204, a scraper 205, and a filter screen 206. The sewage pipe 201 extends through both sides into the interior of the filter bucket 202. The drive unit 203 is located on the side of the filter bucket 202. The scraper 205 and the filter screen 206 are coaxially aligned.

[0046] When using it, first connect the coarse filter to the sewage inlet pipe. At this time, the inside of the sewage inlet pipe is untreated sewage containing a large amount of particulate matter and impurities. If it is directly fed into the sewage treatment skid for sewage treatment, it will cause the sewage treatment skid to malfunction and affect the sewage treatment filtration.

[0047] Furthermore, a connecting sleeve structure is provided in the middle of the support rod 103 to be fitted and connected to the sewage pipe, so that the sewage pipe is fixed and the shaking at the connection of the sewage pipe is reduced. The sewage pipe is connected with a flexible pipe such as a rubber tube, so the connection between the sewage pipes remains firm when the sewage pipe produces a pendulum effect, ensuring the safety of operation.

[0048] Preferably, the scraper 205 and the filter screen 206 slide together on the same axis. The scraper 205 penetrates deep into the filter screen 206. When the scraper 205 and the filter screen 206 move, they generate relative motion, which removes the substances carried by the sewage and cleans the mesh of the filter screen 206, ensuring the stability of sewage filtration.

[0049] Preferably, the drive unit 203 provides kinetic energy to the entire device, and the end cover 204 and the filter barrel 202 form a barrel structure, which ensures the stable operation of the internal mechanical structure.

[0050] Example 2, refer to Figures 1 to 7 This is the second embodiment of the present invention, which differs from the first embodiment in that it also includes a base 101 comprising a sewage tank 101a, a particle tank 101b, and a vertical rod 101c. The sewage tank 101a and the particle tank 101b are spaced apart, and the vertical rod 101c is disposed on the inner side of the base 101.

[0051] Preferably, the support arm 102 includes a hinge hole 102a, which is located at the end of the support arm 102; the support rod 103 includes a connecting sleeve 103a, which is located in the middle of the support rod 103; the sewage pipe 201 includes a branch pipe 201a, which is located on both sides of the sewage pipe 201; the end of the branch pipe 201a is provided with a discharge port 201a-1; the filter bucket 202 includes a protrusion 202a, a sewage discharge trough 202b, and a sludge discharge trough 202c; the protrusion 202a is located on the side of the filter bucket 202; the sewage discharge trough 202b and the sludge discharge trough 202c are located on both sides of the bottom of the filter bucket 202; the protrusion 202a also includes a connecting gear 202a-1 located on its side.

[0052] Preferably, the drive unit 203 includes a drive shaft 203a, which is disposed through the drive unit 203. A filter gear 203a-1 and a scraper gear 203a-2 are respectively disposed at both ends of the drive shaft 203a, and the filter gear 203a-1 and the scraper gear 203a-2 are aligned.

[0053] Furthermore, the end cap 204 includes a mating block 204a and an inlet hole 204b. The mating block 204a is disposed on the side of the end cap 204, and the inlet hole 204b is disposed in the middle of the end cap 204. The scraper 205 includes a driven gear 205a disposed at its end. The driven gear 205a includes a cam 205a-1 and an arc-shaped blade 205a-2. The arc-shaped blade 205a-2 is disposed around the scraper 205, and the cam 205a-1 is disposed on the side of the driven gear 205a. The filter screen 206 includes a driving gear 206a and a rotating screen 206b. The rotating screen 206b includes an array of mesh holes 206b-1 disposed on its side, and the driving gear 206a is disposed on the side of the filter screen 206.

[0054] Specifically, the sewage tank 101a and the particle tank 101b are separated and used to collect dirt and sewage that has been coarsely filtered. The vertical rod 101c contacts the cam 205a-1. When the cam 205a-1 rotates, it hits the vertical rod 101c, causing the entire device to bounce up. After falling back down, it forms a pendulum effect, which effectively prevents sewage from clogging in the pipe through the vibration effect.

[0055] Furthermore, the hinge hole 102a provides movement space for the support rod 103, and the connecting sleeve 103a passes through the neck of the sewage pipe 201, thus restricting the vertical displacement of the sewage pipe 201.

[0056] Preferably, the filter screen gear 203a-1 obtains a torque with a different rotation direction than the scraper gear 203a-2 through the conversion of the connecting gear 202a-1. Therefore, the driving gear 206a and the driven gear 205a obtain different rotation directions, so the relative motion between the scraper 205 and the filter screen 206 is continuous during rotation.

[0057] Preferably, the cam 205a-1 contacts the vertical rod 101c. When the cam 205a-1 moves to the protruding part, the cam 205a-1 hits the vertical rod 101c, causing the entire filter device to be knocked away. After falling back, it continues to strike, so the filter device produces a pendulum-like motion effect when viewed from a distance.

[0058] Therefore, in summary, this invention, by introducing wastewater into a coarse filtration device and directly spraying the wastewater onto the filter screen, prevents the accumulation of solid matter in the wastewater during the screen's rotation, thus maintaining optimal filtration. The scraper rotates in the opposite direction to the filter screen, and through its relative movement, it scrapes away dirt from the screen, ensuring continuous and stable filtration. Simultaneously, the scraper's rotation, combined with the external support unit's structure, creates an intermittent pendulum motion, which helps to create an oscillating effect on the wastewater pipe, reducing the clogging caused by dirt adhesion.

[0059] Example 3, referring to Figures 8-11 This is the third embodiment of the present invention. Based on the first two embodiments, it provides a wastewater treatment skid using microbubble technology. Before using microbubble treatment, preliminary filtration is required. Then, the gas is dispersed into micron-sized bubbles in the liquid by a microbubble generator (the rising speed of a 10μm bubble in water is 3mm / min), which increases the specific surface area of ​​gas-liquid contact, enhances gas-liquid reaction efficiency, and shortens reaction residence time. The entire skid can meet the requirements of high-throughput production on site by adjusting the specifications and dimensions of the microbubble generator, the wastewater inlet and outlet pipelines, the flow rate of the circulating pump, and other parameters.

[0060] Specifically, wastewater treatment skids using microbubble technology, such as Figure 8 As shown, the user's sewage enters this skid-mounted unit through a flange connection. After passing through a pressure regulating valve and the matching reagents, it is thoroughly mixed in a microfluidic mixer before entering the microbubble generator. The microbubble generator in this skid-mounted unit uses air as its air source. After passing through an air filter and an air filter tank, it enters the microbubble generator, forming micron-sized bubbles inside the generator. This increases the specific surface area of ​​the gas-liquid contact, enhances the gas-liquid reaction efficiency, and shortens the reaction residence time. The gas-liquid mixed fluid enters the sewage filter tank. After ensuring a certain residence time, the sewage exits the filter tank and enters the downstream device.

[0061] Furthermore, microbubble technology is used to reduce the COD of chemical wastewater, improve the utilization rate of ozone in industrial wastewater, and reduce the energy consumption of wastewater treatment equipment. This is achieved by compiling relevant data on catalyst dosage, as follows: Figure 9 As shown, with a fixed ozone flow rate, increasing the catalyst dosage will have a certain effect on the overall COD removal efficiency in wastewater. Calculations in the first 60 minutes revealed that when the catalyst dosage increased from 10% to 15%, each 1% increase in catalyst dosage resulted in the removal of an additional 0.18 COD units per minute; when increased from 15% to 20%, each 1% increase in catalyst dosage resulted in the removal of an additional 0.07 COD units per minute. Further increasing the catalyst dosage from 15% significantly reduced the COD removal efficiency. This is because the catalyst is spread evenly at the bottom of the reaction tank, limiting its contact area with the wastewater. Continuously increasing the catalyst dosage does not expand the effective contact area between the catalyst and the wastewater. However, too little catalyst dosage will also lead to poor reaction results and reduced COD removal efficiency. Therefore, a 15% catalyst dosage is the best choice.

[0062] Preferably, by organizing ozone flow-related data as follows: Figure 10 As shown: with a catalyst dosage of 15%, the maximum ozone generator yield is 30 g / h, and the ozone density is 2.1 g / L (gas). Calculations show that the maximum flow rate of the ozone generator is 240 mL / min. Under the condition of a catalyst dosage of 15%, it was found that increasing the ozone content has a certain beneficial effect on the removal of COD in wastewater. In particular, within the first 60 minutes, the increase in both catalyst and ozone content can significantly reduce the COD of wastewater. This is because most organic matter in wastewater is oxidized by ozone, especially the higher the ozone content, the stronger the initial oxidation efficiency. However, as the organic matter in the wastewater gradually decreases, most of the ozone, being insoluble in water, will instead escape into the air.

[0063] Furthermore, through multiple sets of experiments, the optimal reaction conditions were determined to be a catalyst dosage of 15% and an ozone flow rate of 240 mL / min. The results of extending the reaction time are as follows: Figure 11 As shown, the COD content decreased significantly within the first 60 minutes of the reaction, but the COD removal efficiency gradually slowed down thereafter, especially after 180 minutes when the COD fluctuated around 50 mg / L and became extremely difficult to decrease. This is because the organic matter content in the wastewater had already decreased significantly, and a large amount of ozone, being insoluble in water, directly escaped into the air. Overall, the COD decreased from the initial 164 mg / L to around 50 mg / L.

[0064] In this invention, in an oilfield wastewater aeration and desulfurization project, the initial wastewater contained 3 mg / L of S²⁻, 0.2–0.3 mg / L of O, and 0.2–0.3 mg / L of Fe²⁺ / Fe³⁺. To explore the change in S²⁻ content after microbubble treatment, the S²⁻ content was tested every 5 minutes. To verify the advantages of microbubble treatment of wastewater, raw water left to stand in air was used as a control group. Colorimetric tubes for testing S²⁻ content under different conditions were used... Figure 12 As can be seen, the color of the raw wastewater in the colorimetric tube did not change significantly, and the color remained a deep blue. This indicates that the S2- content in the raw wastewater failed to decrease significantly within 30 minutes after being left to stand in the air. However, the color of the wastewater treated by microbubbles gradually lightened over time, becoming essentially colorless after 30-35 minutes. This indicates that the S2- content in the wastewater treated by microbubbles decreased significantly within 30 minutes.

[0065] Table 1 shows the changes in ion concentrations in the raw wastewater and microbubble-treated water over time.

[0066]

[0067] Therefore, this experiment verifies the advantages of the microbubble reaction device in reducing S2- content.

[0068] In summary, oilfield wastewater first passes through a filter to remove suspended solids, then enters the micro-flow mixing unit via a switch valve and a flow control valve, where it is mixed with a bactericide. It then enters the microbubble generator and finally the wastewater filtration tank. Aeration is achieved by adding a circulating pump, and the aeration and desulfurization time is controlled. Air passes through a pre-filter and then through the filtration tank before entering the microbubble generator; the bactericide is pumped into the micro-flow mixer by a bactericide pump to effectively mix with the oilfield wastewater; and the wastewater filtration tank supplies water to the polymer skid via level control.

[0069] Traditional oilfield wastewater desulfurization uses a combination of aeration and physical adsorption in a packed desulfurization tower. This requires periodic soaking and backwashing with cleaning agents, generating large amounts of wastewater that needs to be transported off-site for treatment. This aeration desulfurization skid-mounted system, a portable water treatment system, rapidly removes sulfur using a self-priming microbubble generator, reducing the sulfur content from 2 mg / L to 0 mg / L. This effectively solves problems such as excessive sulfur content in on-site wastewater and long pretreatment times. The treated water is used as feed water for the polymer dispersion maturation skid. At a concentration of 0.2%, the viscosity of the solution increased from 38 mPa·s to 54 mPa·s, a 42% increase. The solution is uniform, clear, and free of fish-eye defects.

[0070] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wastewater treatment skid using microbubble technology, characterized in that: This includes microbubble generators, microflow mixers, air filters, circulating pumps, air filter canisters, chemical filter canisters, chemical pumps, instrument control systems, and wastewater filter canisters; The wastewater filtration tank includes a support unit (100) and a filtration unit (200). The support unit (100) includes a base (101), support arms (102), and support rods (103). The support arms (102) are located on both sides of the base (101), and the support rods (103) are located in the middle of the two support arms (102). The filtration unit (200) includes a sewage pipe (201), a filter bucket (202), a drive unit (203), an end cap (204), a scraper (205), and a filter screen (206). The sewage pipe (201) extends through both sides into the interior of the filter bucket (202). The drive unit (203) is located on the side of the filter bucket (202). The scraper (205) and the filter screen (206) are coaxially aligned. The base (101) includes a sewage tank (101a), a particle tank (101b), and a vertical rod (101c). The sewage tank (101a) and the particle tank (101b) are spaced apart. The vertical rod (101c) is located inside the base (101). The support arm (102) includes a hinge hole (102a) located at the end of the support arm (102). The drive unit (203) includes a drive shaft (203a) that passes through the drive unit (203). A filter gear (203a-1) and a sludge scraper gear (203a-2) are respectively provided at both ends of the drive shaft (203a). The filter gear (203a-1) and the sludge scraper gear (203a-2) are aligned. Wastewater treatment agents are pumped into the micro-flow field mixer by the agent pump and fully mixed with the wastewater. The various agents act in the wastewater and then enter the microbubble generator together. A branch line is added at the inlet of the agent pump to connect clean water to periodically flush the microbubble generator when the wastewater is dirty. The scraper (205) includes a driven gear (205a) disposed at its end. The driven gear (205a) includes a cam (205a-1) and an arc-shaped blade (205a-2). The arc-shaped blade (205a-2) is disposed around the scraper (205), and the cam (205a-1) is disposed on the side of the driven gear (205a). The filter (206) includes a drive gear (206a) and a rotating mesh (206b). The rotating mesh (206b) includes mesh holes (206b-1) arranged in an array on its side. The drive gear (206a) is arranged on the side of the filter (206).

2. The wastewater treatment skid-mounted unit using microbubble technology as described in claim 1, characterized in that: The support rod (103) includes a connecting sleeve (103a), which is disposed in the middle of the support rod (103); The sewage pipe (201) includes a branch pipe (201a), which is respectively arranged on both sides of the sewage pipe (201), and the end of the branch pipe (201a) is provided with a discharge port (201a-1).

3. The wastewater treatment skid-mounted unit using microbubble technology as described in claim 2, characterized in that: The filter barrel (202) includes a protrusion (202a), a sewage discharge trough (202b), and a sludge discharge trough (202c). The protrusion (202a) is disposed on the side of the filter barrel (202), and the sewage discharge trough (202b) and the sludge discharge trough (202c) are respectively disposed on both sides of the bottom of the filter barrel (202). The protrusion (202a) also includes a connecting gear (202a-1) disposed on its side.

4. The wastewater treatment skid-mounted unit using microbubble technology as described in claim 3, characterized in that: The end cap (204) includes a mating block (204a) and a through hole (204b). The mating block (204a) is disposed on the side of the end cap (204), and the through hole (204b) is disposed in the middle of the end cap (204).

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