Oil sludge separation treatment method and system applied to sewage sedimentation tank

Abstract

The invention relates to the technical field of water treatment, in particular to an oil sludge separation treatment method and system applied to a sewage sedimentation tank. When the device is applied, efficient separation treatment of oil films and sludge in sewage can be achieved. By adjusting the power and the direction of the wave maker, the water flow can be dynamically adjusted according to the actual thickness of the oil film and the sludge, so that the removal efficiency is improved. When the oil film is thick, the water surface flow velocity is increased to improve the oil film removal efficiency, and when the silt is much, the bottom flow velocity is increased to improve the silt treatment efficiency. And when the oil film and the sludge are both thick, the direction of the second side wave maker is adjusted to form a flowing fault in the middle of the water body, the migration of the oil film to the water bottom and the suspension of the silt to the water surface are reduced, and thus the oil film and the sludge are independently treated. Under the condition that the oil film and the sludge are both thin, large circulation is formed by increasing the power of all the wave generators, the accumulation speed of the oil film and the sludge is increased, and therefore the overall treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to an oil sludge separation treatment method and system applied to a sewage sedimentation tank. Background Art

[0002] Water pollution control technology is a key branch of environmental engineering. At present, the main technical means used in water pollution control cover multiple process flows such as physical treatment, chemical treatment and biological treatment. Physical treatment mainly separates pollutants through physical processes such as filtration, sedimentation and centrifugal separation. Chemical treatment treats pollutants by adding chemical substances to react chemically with harmful substances in sewage. Biological treatment uses microorganisms to oxidize and decompose organic matter in sewage. In the physical treatment process, the sedimentation tank is designed to effectively separate grease and sludge in sewage. Grease gathers on the water surface through floating action, while sludge settles on the bottom of the pool. How to improve the separation efficiency of grease and sludge is a key technical challenge facing this field. Summary of the invention

[0003] In view of this, the present application provides an oil sludge separation treatment method and system applied to a sewage sedimentation tank, which can effectively improve the separation efficiency of grease and sludge.

[0004] In the first aspect, the present application provides an oil sludge separation treatment method for a sewage sedimentation tank, wherein a first side wave maker for entering sewage is provided on one side wall of the sedimentation tank, and a second side wave maker immersed in sewage is provided on two opposite side walls of the sedimentation tank, the first side wave maker is 5cm to 15cm away from the water surface, the second side wave maker is 50cm to 150cm away from the water surface, the second side wave makers arranged on the two opposite side walls are at different levels, the bottom of the sedimentation tank includes adjacent sludge sliding planes and a sludge collecting pit, a bottom wave maker is provided above the sludge sliding plane, and the distance between the bottom wave maker and the sludge sliding plane is 5 cm~15cm; an oil film extraction port is provided on the side of the sedimentation tank, and the distance between the oil film extraction port and the water surface is 0cm~5cm; wherein the oil sludge separation treatment method applied to the sewage sedimentation tank comprises: controlling the first side wave maker to make waves in the horizontal direction with a first preset power, controlling the second side wave maker to make waves along the wall of the sedimentation tank with a second preset power, and controlling the bottom wave maker to make waves along the bottom of the sedimentation tank with a third preset power; obtaining the average thickness of the oil film on the water surface of the sedimentation tank, and obtaining the average thickness of the sludge on the sludge sliding plane; if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the sludge If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power; if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power; if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than is greater than or equal to the first preset sludge thickness, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power, and the second side wave maker is controlled to make waves in a direction different from the wall surface; and if the average thickness of the oil film is less than the first preset oil film thickness and the average thickness of the sludge is less than the first preset sludge thickness, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the second side wave maker is controlled to make waves along the wall surface of the sedimentation tank and increase power, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power.

[0005] In combination with the first aspect, in a possible implementation, there are multiple first side wave makers; there are multiple second side wave makers; there are multiple bottom wave makers, and the multiple bottom wave makers are evenly arranged along the length direction of the mud sliding plane.

[0006] In combination with the first aspect, in a possible implementation, obtaining the average thickness of the oil film on the water surface of the sedimentation tank includes: obtaining an oil film image on the water surface of the sedimentation tank; setting a water surface reference height of the sedimentation tank; calculating the oil film thickness at various positions of the water surface oil film based on depth information of the water surface oil film image and the water surface reference height; and uniformly sampling the oil film thickness at multiple positions of the water surface oil film and calculating the average thickness of the oil film.

[0007] In combination with the first aspect, in a possible implementation, obtaining the average sludge thickness on the sludge sliding plane includes: obtaining a bottom sludge image of the sedimentation tank; setting a bottom reference height of the sedimentation tank; calculating the sludge thickness at various positions of the bottom sludge based on the depth information of the bottom sludge image and the bottom reference height; and uniformly sampling the sludge thickness at multiple positions of the bottom sludge and calculating the average sludge thickness.

[0008] In combination with the first aspect, in a possible implementation, if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, then the first side wave maker is controlled to make waves in a horizontal direction and increase power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and reduce power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and reduce power. The method includes: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, then the first side wave maker is controlled to increase power at a first increasing rate, and the bottom wave maker is controlled to reduce power at a second reducing rate.

[0009] In combination with the first aspect, in a possible implementation, if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power, including: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the bottom wave maker is controlled to reduce power at a second reduction rate.

[0010] In combination with the first aspect, in a possible implementation, if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, then the first side wave maker is controlled to make waves in a horizontal direction and increase power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power, and the second side wave maker is controlled to make waves in a direction different from the wall surface, including: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, then the wave making directions of the second side wave makers on the two relative side walls are controlled to be opposite to form two upper and lower circulating circulations in the sedimentation tank; the first side wave maker is controlled to increase power at a first lifting rate, and the bottom wave maker is controlled to increase power at a second lifting rate.

[0011] In combination with the first aspect, in a possible implementation, if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase the power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power, and the second side wave maker is controlled to make waves in a direction different from the wall surface, including: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to swing toward the opposite side wall to make waves.

[0012] In combination with the first aspect, in a possible implementation, if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, then the first side wave maker is controlled to make waves in a horizontal direction and increase power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and increase power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and increase power. The method includes: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, then the first side wave maker is controlled to increase power at a first lifting rate, the bottom wave maker is controlled to increase power at a second lifting rate, and the second side wave maker is controlled to increase power at a third lifting rate.

[0013] In a second aspect, the present application provides an oil sludge separation and treatment system applied to a sewage sedimentation tank, wherein a first side wave maker for entering sewage is provided on one side wall of the sedimentation tank, and a second side wave maker immersed in sewage is provided on two opposite side walls of the sedimentation tank, the first side wave maker is 5cm to 15cm away from the water surface, the second side wave maker is 50cm to 150cm away from the water surface, the second side wave makers arranged on the two opposite side walls are at different levels, the bottom of the sedimentation tank includes adjacent sludge sliding planes and a sludge collecting pit, a bottom wave maker is provided above the sludge sliding plane, and the distance between the bottom wave maker and the sludge sliding plane is 5cm to 15cm; An oil film extraction port is provided on the side of the sedimentation tank, and the distance between the oil film extraction port and the water surface is 0 cm to 5 cm; wherein the oil sludge separation treatment system applied to the sewage sedimentation tank comprises: a first wave-making control module, configured to: control the first side wave maker to make waves in the horizontal direction with a first preset power, control the second side wave maker to make waves along the wall of the sedimentation tank with a second preset power, and control the bottom wave maker to make waves along the bottom of the sedimentation tank with a third preset power; a data acquisition module, configured to: obtain the average thickness of the oil film on the water surface of the sedimentation tank, and obtain the average thickness of the sludge on the sludge sliding plane; a second wave-making control module, which is connected to the first wave-making control module and the data acquisition module. The second wave-making control module is configured as follows: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in the horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and reduce the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and reduce the power; a third wave-making control module is respectively communicated and connected with the first wave-making control module and the data acquisition module, and the third wave-making control module is configured as follows: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset sludge thickness, then control the second side wave maker to stop making waves, and control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase the power; a fourth wave making control module, which is communicated with the first wave making control module and the data acquisition module respectively, and the fourth wave making control module is configured as follows: if the average thickness of the oil film is greater than or equal to the first preset oil film thickness and the average thickness of the sludge is greater than or equal to the first preset sludge thickness, then control the first side wave maker to make waves in a horizontal direction and increase the power, control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase the power, and control the second side wave maker to make waves in a direction different from the wall surface;and a fifth wave-making control module, which is communicatively connected with the first wave-making control module and the data acquisition module respectively, and the fifth wave-making control module is configured to: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, control the first side wave maker to make waves in the horizontal direction and increase the power, control the second side wave maker to make waves along the wall of the sedimentation tank and increase the power, and control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase the power;

[0014] When applied, the present application can realize the efficient separation and treatment of oil film and sludge in sewage. The first side wave maker, the second side wave maker and the bottom wave maker can work together to form a unified circulation direction to promote the separation of pollutants in sewage. By adjusting the power and direction of the wave maker, the water flow can be dynamically adjusted according to the actual thickness of the oil film and sludge to improve the removal efficiency. Specifically, when the oil film is thicker and the sludge is thinner, the water surface flow rate is increased to improve the oil film removal efficiency; when the sludge is more and the oil film is thicker, the bottom flow rate is increased to improve the sediment treatment efficiency. When both the oil film and the sludge are thicker, by adjusting the direction and power of the second side wave maker, a flow fault can be formed in the middle of the water body, reducing the oil film from migrating to the bottom of the water and the sludge from suspending to the water surface, thereby independently treating the oil film and independently treating the sludge. In the case where both the oil film and the sludge are thin, by increasing the power of all wave makers, a large circulation is formed to increase the accumulation speed of the oil film and the sludge, thereby improving the overall treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic structural diagram of a water pollution treatment sedimentation tank provided in one embodiment of the present application.

[0016] Figure 2 Shown is a schematic diagram of the method steps of an oil sludge separation treatment method applied to a sewage sedimentation tank provided in another embodiment of the present application.

[0017] Figure 3 Shown is a schematic diagram of forming two independent circulation loops in a sewage pool provided by an embodiment.

[0018] Figure 4 Shown is a schematic diagram of the method steps for calculating the average thickness of the oil film provided in another embodiment of the present application.

[0019] Figure 5 Shown is a schematic diagram of the method steps for calculating the average thickness of sludge provided in another embodiment of the present application.

[0020] Figure 6 Shown is a schematic diagram of the specific treatment method steps when the oil film is thick and the sludge is thin, provided in another embodiment of the present application.

[0021] Figure 7 Shown is a schematic diagram of specific treatment method steps when the oil film is thin and the sludge is thick, provided in another embodiment of the present application.

[0022] Figure 8 Shown is a schematic diagram of the specific processing method steps for achieving two independent circulations when the oil film is thick and the sludge is thick, provided by another embodiment of the present application.

[0023] Fig. 9 Shown is a schematic diagram of the specific processing method steps for swing-type wave making when the oil film and sludge are thick, provided by another embodiment of the present application.

[0024] Fig.10 Shown is a schematic diagram of the specific treatment method steps when the oil film and sludge are thin, provided by another embodiment of the present application.

[0025] Fig.11 Shown is a schematic diagram of the system structure of an oil sludge separation and treatment system applied to a sewage sedimentation tank provided in one embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The data control method of the liquid cooling system of an exemplary intelligent computing server is as follows:

[0028] Figure 1 The figure shows a schematic diagram of the structure of a water pollution treatment sedimentation tank provided in one embodiment of the present application. Figure 1As shown, a first side wave maker 21 for entering sewage is provided on one side wall 11 of the sedimentation tank 10, and second side wave makers 22 for immersing sewage are provided on two opposite side walls 11 of the sedimentation tank 10. The distance between the first side wave maker 21 and the water surface is 5cm-15cm, and the distance between the second side wave maker 22 and the water surface is 50cm-150cm. The horizontal heights of the second side wave makers 22 arranged on the two opposite side walls are different. The bottom of the sedimentation tank 10 includes adjacent sludge sliding planes 12 and a sludge collecting pit 13. A bottom wave maker 23 is provided above the sludge sliding plane 12, and the distance between the bottom wave maker 23 and the sludge sliding plane 12 is 5cm-15cm. The first side wave maker 21 and the second side wave maker 22 are arranged on the side wall of the sedimentation tank 10 in the length direction. The first side wave maker 21, the second side wave maker 22 and the bottom wave maker 23 can form the same circulation direction in the sedimentation tank 10, for example, forming a clockwise circulation or a counterclockwise circulation. The wave-making heads of the first side wave maker 21, the second side wave maker 22 and the bottom wave maker 23 are all rotatable structures, that is, the wave-making direction of each wave maker can be adjusted. In the circulation process, silt and gravel gradually accumulate on the silt sliding plane 12, and the oil film continuously accumulates and increases on the water surface. Under the action of the circulation, the silt and gravel gradually enter the mud collecting pit 13. An oil film extraction port 14 is provided on the side of the sedimentation tank 10. The distance between the oil film extraction port 14 and the water surface is 0 cm to 5 cm. The oil film extraction port 14 can be connected to an oil film filtering device. After the water on the surface of the sedimentation tank 10 enters the oil film extraction port 14, the oil film can be gradually processed and filtered out. The oil film in this application includes grease suspended on the water surface and some suspended pollutants.

[0029] Figure 2 The figure shows a schematic diagram of the steps of a method for separating and treating oil sludge in a sewage sedimentation tank provided by another embodiment of the present application. The method for separating and treating oil sludge in a sewage sedimentation tank comprises:

[0030] Step 110, control the first side wave maker to make waves in the horizontal direction at a first preset power, control the second side wave maker to make waves along the wall of the sedimentation tank at a second preset power, and control the bottom wave maker to make waves along the bottom of the sedimentation tank at a third preset power.

[0031] Step 120: Obtain an average thickness of the oil film on the water surface of the sedimentation tank, and obtain an average thickness of the sludge on the sludge sliding plane.

[0032] Step 130: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in the horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and reduce the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and reduce the power.

[0033] In this step, if the average thickness of the oil film is greater than or equal to the preset thickness of the first oil film, it means that the oil film is too thick. By increasing the power of the first side wave maker, the water surface flow rate is increased to improve the efficiency of removing the oil film on the water surface. At the same time, by reducing the power of the second side wave maker and the bottom wave maker, the flow rate below the water surface is reduced, thereby preventing more oil film from migrating to the water surface, resulting in excessive accumulation of oil film on the water surface and failure to deal with it in time. Failure to deal with it in time may cause a large amount of oil film on the water surface to migrate to the water body below the water surface.

[0034] Step 140: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power.

[0035] In this step, if the average thickness of the oil film is less than the first preset thickness of the oil film, it means that the oil film is thinner, and if the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, it means that the sludge at the bottom of the pool is thicker. Increasing the bottom flow rate can increase the speed at which the silt enters the sludge collection pit, that is, improve the efficiency of silt treatment, and at the same time can accelerate the accumulation of oil and fat in the water body to the water surface. Stopping the operation of the second side wave maker can reduce the flow rate of the middle layer water flow and can also avoid sucking up the bottom silt to a certain extent. The first side wave maker can maintain normal operation at the first preset power to promote the flow of the water surface and thus treat the oil film on the water surface.

[0036] Step 150: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase the power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power, and the second side wave maker is controlled to make waves in a direction different from the wall.

[0037] In this step, if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film, it means that the oil film is thicker, and if the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, it means that the dripping sludge is thicker, and at the same time, the surface and bottom flow rates are increased to improve the processing efficiency of the oil film and the sludge and sand. The second side wave maker is controlled to rotate and make waves in a direction different from the wall, for example, the second side wave maker makes waves in a horizontal direction, or the angle between the wave making direction of the second side wave maker and the horizontal direction is 0° to 10°. Figure 3 FIG. 1 is a schematic diagram of forming two independent circulation loops in a sewage pool according to an embodiment. Figure 3 As shown, the second side wave makers 22 on both sides with different horizontal heights can form a flow fault in the middle of the water body to a certain extent. Figure 3It roughly illustrates the division of the flow fault into two upper and lower circulations. The arrows indicate the circulation directions. An independent circulation cycle is formed above the flow fault, and an independent circulation cycle is formed below the flow fault. This can reduce the amount of oil film on the water surface migrating to the bottom of the water, and also reduce the amount of sediment on the bottom of the water surface migrating to the water surface, thereby quickly dealing with the oil film on the water surface and the sediment on the bottom of the water respectively.

[0038] Step 160: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in the horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and increase the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and increase the power.

[0039] In this step, if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the silt is less than the first preset thickness of the silt, it means that the oil film and the silt are both thin, and a large circulation can be formed by the first side wave maker, the second side wave maker and the bottom wave maker to increase the accumulation speed of the oil film on the water surface and the accumulation speed of the silt and sand on the bottom of the water.

[0040] When this embodiment is applied, it is possible to achieve efficient separation and treatment of oil film and sludge in sewage. The first side wave maker, the second side wave maker and the bottom wave maker can work together to form a unified circulation direction to promote the separation of pollutants in sewage. By adjusting the power and direction of the wave maker, the water flow can be dynamically adjusted according to the actual thickness of the oil film and sludge to improve the removal efficiency. Specifically, when the oil film is thicker and the sludge is thinner, the surface flow rate is increased to improve the oil film removal efficiency; when the sludge is more and the oil film is thicker, the bottom flow rate is increased to improve the sediment treatment efficiency. When both the oil film and the sludge are thicker, by adjusting the direction and power of the second side wave maker, a flow fault can be formed in the middle of the water body, reducing the oil film from migrating to the bottom of the water and the sediment from suspending to the surface of the water, thereby independently treating the oil film and independently treating the sludge. In the case where both the oil film and the sludge are thin, by increasing the power of all wave makers, a large circulation is formed to increase the accumulation speed of the oil film and the sludge, thereby improving the overall treatment efficiency.

[0041] Specifically, the first oil film preset thickness and the first sludge preset thickness can be set according to the actual volume of the sewage pool or according to expert experience. For example, for a sewage pool of 10 meters in length, the first oil film preset thickness can be set to a value between 3 cm and 6 cm, and the first sludge preset thickness can be set to a value between 5 cm and 10 cm.

[0042] In one embodiment, referring to Figure 1 The number of the first side wave makers 21 is multiple, the number of the second side wave makers 22 is multiple, and the number of the bottom wave makers 23 is multiple, and the multiple bottom wave makers 23 are evenly arranged along the length direction of the silt sliding plane 12.

[0043] Figure 4 FIG. 1 is a schematic diagram of the steps of a method for calculating the average thickness of an oil film provided by another embodiment of the present application. Figure 4 As shown, obtaining the average thickness of the oil film on the water surface of the sedimentation tank in step 120 includes:

[0044] Step 1201: Acquire an image of the oil film on the water surface of a sedimentation tank.

[0045] Step 1202: Set the water level reference height of the sedimentation tank.

[0046] Step 1203: Calculate the thickness of the oil film at each position of the water surface oil film according to the depth information of the water surface oil film image and the water surface reference height.

[0047] Step 1204 , uniformly sample the oil film thickness at multiple locations of the oil film on the water surface and calculate the average thickness of the oil film.

[0048] When this embodiment is used, the water surface of the sedimentation tank is photographed by a camera above the sedimentation tank to obtain an image of the oil film on the water surface. The camera can capture and collect the depth information of the oil film at various positions on the water surface, that is, the relative distance between each position of the oil film on the water surface and the camera. A water level gauge is set in the sedimentation tank to obtain the water storage data of the sedimentation tank. The water surface height in the sedimentation tank can be obtained based on the water storage data, that is, the water surface reference height can be obtained, and then the relative distance between the water surface of the sedimentation tank and the camera can be converted according to the position of the camera. According to the relative distance between each position of the oil film on the water surface and the camera, and the relative distance between the water surface and the camera, the difference between the two is calculated, and the thickness of the oil film at each position of the oil film on the water surface can be calculated. Due to the large amount of impurities in the sewage, the oil film and suspended matter on the water surface are unevenly distributed. The thickness of the oil film at multiple positions on the water surface oil film is sampled evenly and equidistantly, and then the average value is calculated, which can more objectively reflect the thickness information of the oil film on the water surface.

[0049] Figure 5 FIG. 1 is a schematic diagram of a method for calculating the average thickness of sludge provided by another embodiment of the present application. Figure 5 As shown, Figure 5 As shown, obtaining the average thickness of the silt on the silt sliding plane in step 120 includes:

[0050] Step 1211: Acquire the bottom sludge image of the sedimentation tank.

[0051] Step 1212: Set the bottom reference height of the sedimentation tank.

[0052] Step 1213: Calculate the thickness of the bottom mud at each position according to the depth information of the bottom mud image and the bottom reference height.

[0053] Step 1214: uniformly sample the thickness of the bottom sludge at multiple locations and calculate the average thickness of the sludge.

[0054] When this embodiment is applied, a camera can be set at a position near the bottom of the sedimentation tank to shoot the bottom sludge in the sedimentation tank to obtain a bottom sludge image. The camera can capture and collect the depth information of each position of the bottom sludge, that is, the relative distance between each position of the bottom sludge and the camera is obtained. According to the size information of the sedimentation tank, the bottom reference height is obtained, and then the relative distance between the bottom of the sedimentation tank and the camera can be converted according to the position of the camera. According to the relative distance between each position of the bottom sludge and the camera, and the relative distance between the bottom of the sedimentation tank and the camera, the difference between the two is calculated, and the sludge thickness at each position of the bottom sludge can be calculated. Due to the large number of impurities in the sewage, the sludge and debris at the bottom of the sedimentation tank are unevenly distributed. The thickness of the bottom sludge can be more objectively reflected by sampling the sludge thickness at multiple positions on the bottom sludge evenly and equidistantly and then calculating the average value.

[0055] Figure 6 The figure shows a schematic diagram of a specific treatment method for a case where the oil film is thick and the sludge is thin, provided in another embodiment of the present application. Figure 6 As shown, step 130 includes:

[0056] Step 131: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to increase power at a first increase rate, and the bottom wave maker is controlled to reduce power at a second reduction rate.

[0057] In this embodiment, the power of the first side wave maker is slowly increased by the first increasing rate, which can avoid the generation of a large amount of turbulence due to excessive power increase. Similarly, the power of the bottom wave maker is slowly reduced by the second decreasing rate, which can avoid the generation of a large amount of turbulence due to excessive power change. Figure 1 The first side wave maker 21 on the left side makes waves horizontally to the right, the second side wave maker 22 on the right side makes waves downward along the wall, the bottom wave maker 23 makes waves horizontally to the left, and the second side wave maker 22 on the left side makes waves upward along the wall, thereby forming a large circulation circulation. The first lifting rate is determined according to the first preset power, the two are proportional, and the proportional coefficient can be set according to the concentration of sewage. The second lifting rate is determined according to the third preset power, the two are proportional, and the proportional coefficient can be set according to the concentration of sewage.

[0058] Figure 7 The figure shows a schematic diagram of a specific treatment method for a thin oil film and thick sludge according to another embodiment of the present application. Figure 7 As shown, step 140 includes:

[0059] Step 141: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, control the bottom wave maker to reduce power at a second reduction rate.

[0060] In this embodiment, the power of the bottom wave maker is slowly reduced by the second reduction rate, which can avoid a large amount of turbulence caused by too fast power change. The second increase rate is determined according to the third preset power, and the two are proportional. The proportional coefficient can be set according to the concentration of the sewage.

[0061] Figure 8 The figure shows a schematic diagram of a specific processing method for realizing two independent circulations when the oil film is thick and the sludge is thick, provided by another embodiment of the present application. Figure 8 As shown, step 150 includes:

[0062] Step 151: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave makers on the two opposite side walls are controlled to make waves in opposite directions to form two upper and lower circulations in the sedimentation tank.

[0063] Step 152: Control the first side wave maker to increase power at a first increase rate, and control the bottom wave maker to increase power at a second increase rate.

[0064] In this embodiment, refer to Figure 3 Since the second side wave makers 22 arranged on the two side walls have different levels, Figure 3 The second side wave maker 22 on the right side is higher than the second side wave maker 22 on the left side. The second side wave maker 22 on the right side makes waves horizontally to the left, and the first side wave maker 21 on the left side makes waves horizontally to the right, thereby forming an independent circulating circulation above. The second side wave maker 22 on the left side makes waves horizontally to the right, and the bottom wave maker 23 makes waves horizontally to the left, thereby forming a circulating circulation below. The two independent circulating circulations can form a flow fault, which prevents the oil film on the water surface from migrating to the bottom of the water and the bottom sludge from migrating to the water surface, so that the upper circulating circulation alone processes the oil film, and the lower circulating circulation alone processes the sludge. The first lifting rate is determined according to the first preset power, and the two are proportional, and the proportional coefficient can be set according to the concentration of the sewage. The second lifting rate is determined according to the third preset power, and the two are proportional, and the proportional coefficient can be set according to the concentration of the sewage.

[0065] In some embodiments, the wave-making direction of the second side wave maker is fine-tuned to form a small angle with the horizontal plane to better form two independent circulating circulations. Specifically: the second side wave maker 22 on the left side makes waves toward the lower right, and its direction angle is 1° to 3° with the horizontal plane; the second side wave maker 22 on the right side makes waves toward the upper left, and its direction angle is 1° to 3° with the horizontal plane.

[0066] Fig. 9 The figure shows a schematic diagram of a specific processing method for swing-type wave making when the oil film is thick and the sludge is thick, provided by another embodiment of the present application. Fig. 9 As shown, step 150 includes:

[0067] Step 153: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, control the second side wave maker to swing toward the opposite side wall to make waves.

[0068] In this embodiment, by creating waves when the second side wave maker swings, a wave-like flow layer can be formed in the middle of the sewage pool, which can separate the upper water body and the lower water body to a certain extent, prevent the oil film on the water surface from migrating to the bottom of the water and the silt at the bottom from migrating to the water surface, so that the upper circulating circulation can treat the oil film alone, and the lower circulating circulation can treat the silt alone.

[0069] Fig.10 The figure shows a schematic diagram of a specific treatment method for a thin oil film and thin sludge according to another embodiment of the present application. Fig.10 As shown, step 160 includes:

[0070] Step 161: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to increase power at a first increase rate, the bottom wave maker is controlled to increase power at a second increase rate, and the second side wave maker is controlled to increase power at a third increase rate.

[0071] In this embodiment, the power of the first side wave maker, the second side wave maker, and the bottom wave maker is gradually increased to avoid turbulence caused by sudden power changes. Figure 1, the first side wave maker 21 on the left side makes waves horizontally to the right, the second side wave maker 22 on the right side makes waves downward along the wall, the bottom wave maker 23 makes waves horizontally to the left, and the second side wave maker 22 on the left side makes waves upward along the wall, thereby forming a large circulation circulation. The first lifting rate is determined according to the first preset power, the two are proportional, and the proportional coefficient can be set according to the concentration of sewage. The second lifting rate is determined according to the third preset power, the two are proportional, and the proportional coefficient can be set according to the concentration of sewage. The third lifting rate is determined according to the second preset power, the two are proportional, and the proportional coefficient can be set according to the concentration of sewage.

[0072] The present application also provides an oil sludge separation treatment system applied to a sewage sedimentation tank, wherein a first side wave maker for entering sewage is provided on one side wall of the sedimentation tank, and second side wave makers immersed in sewage are provided on two opposite side walls of the sedimentation tank, the distance between the first side wave maker and the water surface is 5 cm to 15 cm, the distance between the second side wave maker and the water surface is 50 cm to 150 cm, the horizontal heights of the second side wave makers arranged on the two opposite side walls are different, the bottom of the sedimentation tank 10 includes adjacent sludge sliding planes and sludge collecting pits, and the bottom wave maker is provided on the sludge sliding plane; an oil film extraction port is provided on the side of the sedimentation tank 10, and the distance between the oil film extraction port and the water surface is 0 cm to 5 cm;

[0073] Fig.11 The system structure diagram of an oil sludge separation treatment system applied to a sewage sedimentation tank provided by an embodiment of the present application is shown. The oil sludge separation treatment system applied to a sewage sedimentation tank comprises: a first wave making control module 101, a data acquisition module 102, a second wave making control module 103, a third wave making control module 104, a fourth wave making control module 105, and a fifth wave making control module 106.

[0074] The first wave-making control module 101 is configured to: control the first side wave maker to make waves with a first preset power in the horizontal direction, control the second side wave maker to make waves with a second preset power along the wall of the sedimentation tank, and control the bottom wave maker to make waves with a third preset power along the bottom of the sedimentation tank;

[0075] The data acquisition module 102 is configured to: obtain the average thickness of the oil film on the water surface of the sedimentation tank, and obtain the average thickness of the silt on the silt sliding plane;

[0076] The second wave-making control module 103 is respectively connected to the first wave-making control module 101 and the data acquisition module 102 in communication, and the second wave-making control module 103 is configured as follows: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave-making device is controlled to make waves in the horizontal direction and increase the power, the second side wave-making device is controlled to make waves along the wall of the sedimentation tank and reduce the power, and the bottom wave-making device is controlled to make waves along the bottom of the sedimentation tank and reduce the power;

[0077] The third wave making control module 104 is respectively connected to the first wave making control module 101 and the data acquisition module 102 for communication. The third wave making control module 104 is configured to: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, then control the second side wave maker to stop making waves, and control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase the power;

[0078] The fourth wave-making control module 105 is communicatively connected to the first wave-making control module 101 and the data acquisition module 102 respectively. The fourth wave-making control module 105 is configured as follows: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, then the first side wave maker is controlled to make waves in a horizontal direction and increase the power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power, and the second side wave maker is controlled to make waves in a direction different from the wall.

[0079] The fifth wave-making control module 106 is communicatively connected to the first wave-making control module 101 and the data acquisition module 102 respectively. The fifth wave-making control module 106 is configured as follows: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in the horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and increase the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and increase the power.

[0080] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0081] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0082] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0083] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0084] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for separating and treating oil sludge in a sewage sedimentation tank, characterized in that: A first side wave maker for entering sewage is provided on one side wall of the sedimentation tank, and second side wave makers immersed in sewage are provided on two opposite side walls of the sedimentation tank, the distance between the first side wave maker and the water surface is 5cm-15cm, the distance between the second side wave maker and the water surface is 50cm-150cm, and the horizontal heights of the second side wave makers arranged on the two opposite side walls are different. The bottom of the sedimentation tank includes adjacent sludge sliding planes and sludge collecting pits, and a bottom wave maker is provided above the sludge sliding plane, and the distance between the bottom wave maker and the sludge sliding plane is 5cm-15cm; an oil film extraction port is provided on the side of the sedimentation tank, and the distance between the oil film extraction port and the water surface is 0cm-5cm; Wherein, the oil sludge separation treatment method applied to the sewage sedimentation tank includes: Controlling the first side wave maker to generate waves at a first preset power in a horizontal direction, controlling the second side wave maker to generate waves at a second preset power along a wall of the sedimentation tank, and controlling the bottom wave maker to generate waves at a third preset power along a bottom surface of the sedimentation tank; Obtaining an average thickness of the oil film on the water surface of the sedimentation tank, and obtaining an average thickness of the sludge on the sludge sliding plane; If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in the horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and reduce the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and reduce the power; If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power; If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power, and the second side wave maker is controlled to make waves in a direction different from the wall surface; and If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase the power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and increase the power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and increase the power.

2. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: The number of the first side wave makers is multiple; The number of the second side wave makers is multiple; There are multiple bottom wave makers, and the multiple bottom wave makers are evenly arranged along the length direction of the mud sliding plane.

3. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: The step of obtaining the average thickness of the oil film on the water surface of the sedimentation tank comprises: Acquire an image of the oil film on the water surface of the sedimentation tank; Setting a water level reference height of the sedimentation tank; Calculating the thickness of the oil film at each position of the oil film on the water surface according to the depth information of the oil film image on the water surface and the water surface reference height; and The thickness of the oil film at multiple locations of the oil film on the water surface is uniformly sampled and the average thickness of the oil film is calculated.

4. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: The obtaining of the average thickness of the sludge on the sludge sliding plane comprises: Acquire a bottom sludge image of the sedimentation tank; Setting the bottom reference height of the sedimentation tank; Calculating the thickness of the bottom silt at each position according to the depth information of the bottom silt image and the bottom reference height; and The thickness of the bottom mud at multiple locations is uniformly sampled and the average thickness of the mud is calculated.

5. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and reduce power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and reduce power, including: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to increase power at a first increase rate, and the bottom wave maker is controlled to reduce power at a second reduction rate.

6. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to stop making waves, and the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase the power, including: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the bottom wave maker is controlled to reduce power at a second reduction rate.

7. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power, and the second side wave maker is controlled to make waves in a direction different from the wall surface, including: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the wave-making directions of the second side wave makers on the two opposite side walls are controlled to be opposite to each other, so as to form two upper and lower circulation loops in the sedimentation tank; The first side wave maker is controlled to increase power at a first increase rate, and the bottom wave maker is controlled to increase power at a second increase rate.

8. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the bottom wave maker is controlled to make waves along the bottom surface of the sedimentation tank and increase power, and the second side wave maker is controlled to make waves in a direction different from the wall surface, including: If the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, the second side wave maker is controlled to swing toward the opposite side wall to make waves.

9. The oil sludge separation and treatment method applied to a sewage sedimentation tank according to claim 1, characterized in that: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to make waves in a horizontal direction and increase power, the second side wave maker is controlled to make waves along the wall of the sedimentation tank and increase power, and the bottom wave maker is controlled to make waves along the bottom of the sedimentation tank and increase power, including: If the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, the first side wave maker is controlled to increase power at a first increase rate, the bottom wave maker is controlled to increase power at a second increase rate, and the second side wave maker is controlled to increase power at a third increase rate.

10. The oil sludge separation and treatment system applied to the sewage sedimentation tank is characterized by: A first side wave maker for entering sewage is provided on one side wall of the sedimentation tank, and second side wave makers immersed in sewage are provided on two opposite side walls of the sedimentation tank, the distance between the first side wave maker and the water surface is 5cm-15cm, the distance between the second side wave maker and the water surface is 50cm-150cm, and the horizontal heights of the second side wave makers arranged on the two opposite side walls are different. The bottom of the sedimentation tank includes adjacent sludge sliding planes and sludge collecting pits, and a bottom wave maker is provided above the sludge sliding plane, and the distance between the bottom wave maker and the sludge sliding plane is 5cm-15cm; an oil film extraction port is provided on the side of the sedimentation tank, and the distance between the oil film extraction port and the water surface is 0cm-5cm; Wherein, the oil sludge separation and treatment system applied to the sewage sedimentation tank comprises: The first wave-making control module is configured to: control the first side wave maker to make waves with a first preset power in a horizontal direction, control the second side wave maker to make waves with a second preset power along the wall of the sedimentation tank, and control the bottom wave maker to make waves with a third preset power along the bottom of the sedimentation tank; The data acquisition module is configured to: obtain the average thickness of the oil film on the water surface of the sedimentation tank, and obtain the average thickness of the sludge on the sludge sliding plane; a second wave-making control module, which is communicatively connected with the first wave-making control module and the data acquisition module respectively, and the second wave-making control module is configured to: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is less than the first preset thickness of the sludge, control the first side wave maker to make waves in a horizontal direction and increase power, control the second side wave maker to make waves along the wall of the sedimentation tank and reduce power, and control the bottom wave maker to make waves along the bottom of the sedimentation tank and reduce power; a third wave-making control module, which is in communication connection with the first wave-making control module and the data acquisition module respectively, and the third wave-making control module is configured to: if the average thickness of the oil film is less than the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, control the second side wave maker to stop making waves, and control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase power; a fourth wave-making control module, which is communicatively connected with the first wave-making control module and the data acquisition module respectively, and the fourth wave-making control module is configured to: if the average thickness of the oil film is greater than or equal to the first preset thickness of the oil film and the average thickness of the sludge is greater than or equal to the first preset thickness of the sludge, control the first side wave maker to make waves in a horizontal direction and increase the power, control the bottom wave maker to make waves along the bottom surface of the sedimentation tank and increase the power, and control the second side wave maker to make waves in a direction different from the wall surface; and The fifth wave-making control module is communicatively connected with the first wave-making control module and the data acquisition module respectively, and the fifth wave-making control module is configured as follows: if the average thickness of the oil film is less than the preset thickness of the first oil film and the average thickness of the sludge is less than the preset thickness of the first sludge, the first side wave-maker is controlled to make waves in a horizontal direction and increase the power, the second side wave-maker is controlled to make waves along the wall of the sedimentation tank and increase the power, and the bottom wave-maker is controlled to make waves along the bottom of the sedimentation tank and increase the power.

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