Sedimentation tank water flow control method and system for water pollution treatment

Abstract

The invention relates to the technical field of water treatment, in particular to a sedimentation tank water flow control method and system for water pollution treatment. When the sewage treatment device is applied, sewage in the sedimentation tank is driven by the wave making device to flow circularly, the contact efficiency of the sewage and the filter screen can be improved through circular flow, that is, the filtering capacity of the filter screen in unit time is improved, and the sewage is filtered by the filter screen, then enters the filter cavity and is pumped away by the water suction pump. When the TDS parameter fluctuation amplitude is too large, the turbulent flow is too much, and the circulating flow velocity needs to be reduced until the fluctuation amplitude is reduced. In the purification process, monitoring the water level in the sedimentation tank, and supplementing sewage when the TDS parameter is relatively low and the water level is too low; when the water level in the filter cavity is too low, swing type wave making is carried out towards the filter cavity to clean the filter screen and quickly supplement the water level in the filter cavity.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a method and system for controlling water flow in a sedimentation tank for water pollution treatment. Background Art

[0002] Water pollution treatment technology is an important part of the field of environmental engineering. With the development of science and technology, the technology in this field is also constantly improving. At present, the main technologies used in water pollution treatment include physical methods, chemical methods, physical and chemical methods and biological methods. Physical methods usually involve processes such as filtration, sedimentation, centrifugal separation and flotation, and separate pollutants by physical or mechanical means. Chemical methods react chemically with harmful substances in sewage by adding chemical substances, such as neutralization, oxidation, reduction, decomposition and chemical precipitation. Physical and chemical methods combine physical and chemical methods, such as air stripping, stripping, adsorption, extraction, ion exchange, electrolysis and electrodialysis, and reverse osmosis. Biological methods use microorganisms to oxidize and decompose organic matter in sewage, including activated sludge method, biological filter, biological rotary disc and oxidation pond.

[0003] In the physical treatment method, a filter is required in the sedimentation tank to filter the sewage for the first time. The sewage does not flow but is filtered through the filter by itself, which leads to low filtration efficiency and easy clogging of the filter. Therefore, how to improve the filtration efficiency of the filter and reduce the probability of filter clogging is a crucial technical issue in this field. Summary of the invention

[0004] In view of this, the present application provides a water flow control method and system for a sedimentation tank for water pollution treatment, which can improve the filtering efficiency of the filter and reduce the probability of filter clogging.

[0005] In the first aspect, the present application provides a method for controlling water flow in a sedimentation tank for water pollution treatment, wherein a wave-making device and a filtering device are provided in the sedimentation tank, wherein the wave-making device is arranged on the wall of the sedimentation tank, wherein the filtering device comprises a filter screen and a water pump, wherein the filter screen has a filter cavity, wherein the filter cavity is immersed in the sewage to be treated in the sedimentation tank, wherein the water pump is arranged in the filter cavity, and the distance between the outer wall of the filter screen and the wall of the sedimentation tank is greater than a preset distance; the method for controlling water flow in a sedimentation tank for water pollution treatment comprises: obtaining a TDS parameter of the sedimentation tank; if the TDS parameter is greater than a first preset value, controlling the wave-making direction of the wave-making device to be parallel to the wall where the wave-making device is located, so as to drive the sewage to circulate in the sedimentation tank at a first flow rate acceleration. flow; obtaining the circulation velocity of the sewage in real time, if the circulation velocity exceeds a first preset velocity, controlling the coolant to circulate at a uniform speed through the wave-making device, and controlling the water pump to start pumping water; if the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than a preset amplitude, reducing the driving power of the wave-making device to reduce the circulation velocity until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude; if the TDS parameter is lower than a second preset value and the first water level of the sewage in the sedimentation tank is lower than the first preset water level, injecting the sewage to be treated into the sedimentation tank; and if the second water level in the filter chamber is lower than the second preset water level, controlling the wave-making device to swing toward the filter chamber to make waves.

[0006] In combination with the first aspect, in a possible implementation, a plurality of sand retaining plates are provided on the wall of the sedimentation tank opposite to the wave-making device, the sand retaining plates having a mesh structure, the sand retaining plates being arranged at an angle to the wall of the sedimentation tank, and the sand retaining plates being inclined downward.

[0007] In combination with the first aspect, in a possible implementation, a sand discharge port is provided on the wall surface below the sand retaining plate, and the sand discharge port is connected to a sand storage water tank.

[0008] In combination with the first aspect, in a possible implementation, the filter device also includes a rotation drive device, which is connected to the filter screen, and the rotation drive device is configured to drive the filter screen to rotate; the water flow control method for the sedimentation tank for water pollution treatment also includes: if the second water level in the filter chamber is lower than a second preset water level, controlling the rotation drive device to drive the filter screen to rotate.

[0009] In combination with the first aspect, in a possible implementation, it further includes: if the second water level in the filter chamber starts to rise from a water level lower than the second preset water level, controlling the rotation drive device to start changing speed and decelerating.

[0010] In combination with the first aspect, in a possible implementation, the relationship between the deceleration rate Δv1 of the rotation drive device and the water level rise rate Δv2 of the second water level satisfies: Δv1=h*Δv2, where h is positively correlated with the number of meshes of the filter.

[0011] In combination with the first aspect, in a possible implementation, it also includes: if the rotation speed of the water pump is lower than the safe rotation speed, controlling the rotation drive device to drive the filter screen to rotate; and controlling the wave-making device to perform swing-type wave-making toward the filter chamber.

[0012] In combination with the first aspect, in a possible implementation, the bottom wall of the sand storage tank is lower than the bottom wall of the sedimentation tank; the water flow control method of the sedimentation tank for water pollution treatment also includes: monitoring the sand content of the sand storage tank; if the sand content is greater than the preset sand content, controlling the water pump and the wave-making device to shut down; and controlling the rotating drive device to drive the filter to rotate.

[0013] In combination with the first aspect, in a possible implementation manner, it also includes: calling the corresponding first preset value and the second preset value according to the water source type of the sewage.

[0014] In a second aspect, the present application provides a water flow control system for a sedimentation tank for water pollution treatment, wherein a wave-making device and a filtering device are provided in the sedimentation tank, wherein the wave-making device is arranged on the wall of the sedimentation tank, wherein the filtering device comprises a filter screen and a water pump, wherein the filter screen has a filtering cavity, wherein the filtering cavity is immersed in the sewage to be treated in the sedimentation tank, wherein the water pump is arranged in the filtering cavity, and the distance between the outer wall of the filter screen and the wall of the sedimentation tank is greater than a preset distance; the water flow control system for the sedimentation tank for water pollution treatment comprises: a data acquisition module, configured to: obtain the TDS parameter of the sedimentation tank; a first wave-making control module, which is communicatively connected to the data acquisition module, wherein the first wave-making control module is configured to: if the TDS parameter is greater than a first preset value, control the wave-making direction of the wave-making device to be parallel to the wall where the wave-making device is located, so as to drive the sewage to circulate in the sedimentation tank at a first flow velocity acceleration; a second wave-making control module, which is communicatively connected to the data acquisition module, wherein the second wave-making control module is configured to: obtain in real time the circulation velocity of the sewage, if the circulation velocity exceeds the first preset velocity, the coolant is controlled to circulate at a uniform speed through the wave-making device, and the water pump is controlled to start pumping water; a third wave-making control module, which is connected to the data acquisition module in communication, and the third wave-making control module is configured to: if the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than the preset amplitude, the driving power of the wave-making device is reduced to reduce the circulation velocity until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude; a water injection module, which is connected to the data acquisition module in communication, and the water injection module is configured to: if the TDS parameter is lower than the second preset value and the first water level of the sewage in the sedimentation tank is lower than the first preset water level, the sewage to be treated is injected into the sedimentation tank; and a fourth wave-making control module, which is connected to the data acquisition module in communication, and the fourth wave-making control module is configured to: if the second water level in the filter chamber is lower than the second preset water level, the wave-making device is controlled to swing toward the filter chamber.

[0015] When the present application is used, the sewage in the sedimentation tank is driven to circulate through the wave-making device. The circulating flow can improve the contact efficiency between the sewage and the filter, that is, improve the filtering capacity of the filter per unit time. The sewage enters the filter cavity after being filtered by the filter and is pumped away by the water pump. When the fluctuation amplitude of the TDS parameter is too large, it means that there is too much turbulence, and the circulation flow rate needs to be reduced until the fluctuation amplitude is reduced. During the purification process, the water level in the sedimentation tank is monitored. When the TDS parameter is low and the water level is too low, sewage is replenished; when the water level in the filter cavity is too low, swing waves are made toward the filter cavity to clean the filter and quickly replenish the water level in the filter cavity. In summary, the present application can improve the filtering efficiency of the filter and reduce the probability of filter blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the structure of a sedimentation tank for water pollution treatment provided in one embodiment of the present application.

[0017] Figure 2 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0018] Figure 3 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0019] Figure 4 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0020] Figure 5 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0021] Figure 6 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0022] Figure 7 Shown is a schematic diagram of the method steps of a sedimentation tank water flow control method for water pollution treatment provided by another embodiment of the present application.

[0023] Figure 8 Shown is a schematic diagram of the system structure of a sedimentation tank water flow control system for water pollution treatment provided by another embodiment of the present application. DETAILED DESCRIPTION

[0024] 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.

[0025] The data control method of the liquid cooling system of an exemplary intelligent computing server is as follows:

[0026] Figure 1 Shown is a schematic diagram of the structure of a sedimentation tank for water pollution treatment provided in one embodiment of the present application. Figure 2 The figure shows a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. The present application provides a method for controlling water flow in a sedimentation tank for water pollution treatment. In one embodiment, as Figure 1As shown, a wave-making device 1 and a filtering device are provided in the sedimentation tank 10. The wave-making device 1 is arranged on the wall of the sedimentation tank 10. The filtering device includes a filter screen 2 and a pump 3. The filter screen 2 has a filter cavity 201. The filter cavity 201 is immersed in the sewage to be treated in the sedimentation tank 10. The pump 3 is arranged in the filter cavity 201. The distance between the outer wall of the filter screen 2 and the wall of the sedimentation tank 10 is greater than a preset distance. Figure 2 As shown, the water flow control method of the sedimentation tank for water pollution treatment includes:

[0027] Step 110 , obtaining the TDS parameter of the sedimentation tank 10 .

[0028] In this step, a TDS sensor is arranged in the sedimentation tank 10 to monitor the TDS parameter of the sewage in the sedimentation tank 10 in real time. The TDS parameter reflects the turbidity of the sewage. The higher the TDS, the more turbid the sewage.

[0029] Step 120: If the TDS parameter is greater than the first preset value, the wave-making direction of the wave-making device 1 is controlled to be parallel to the wall surface where the wave-making device 1 is located, so as to drive the sewage to circulate in the sedimentation tank 10 at a first flow velocity acceleration.

[0030] In this step, the sewage data in the sedimentation tank 10 is detected in real time. When the TDS parameter is greater than the first preset value, it means that the sewage is relatively turbid and sewage treatment can be started. The wave-making device 1 drives the sewage to flow along the wall, and can drive the sewage to circulate in the sedimentation tank 10. The sewage is constantly in contact with the filter screen 2. The filtered sewage passes through the filter screen 2 and enters the filter cavity 201 in the filter screen 2 and is then pumped away by the pump 3. In addition, when the wave-making device 1 is working, it gradually starts to accelerate at the first flow rate acceleration to avoid excessive turbulence caused by sudden changes in the circulation flow rate, which makes the filter screen 2 contact unevenly with the sewage. Uneven contact may cause the filter screen 2 to be blocked faster. Different first preset values ​​can be set according to the type of sewage to be treated. For example, the more turbid the sewage type, the smaller the first preset value.

[0031] Step 130, obtaining the circulation velocity of the sewage in real time, if the circulation velocity exceeds the first preset velocity, the wave-making device 1 is used to control the coolant to circulate at a uniform speed, and the pump 3 is controlled to start pumping water.

[0032] In this step, when the circulation velocity gradually rises to the first preset velocity, there is no need to continue to increase the circulation velocity. At this time, the uniform circulation flow is controlled, and sewage is filtered. The pump 3 is started to pump water from the filter chamber 201.

[0033] Step 140: If the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than the preset amplitude, the driving power of the wave-making device 1 is reduced to reduce the circulation flow rate until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude.

[0034] In this step, the fluctuation amplitude of the TDS parameter is detected in real time. When the fluctuation amplitude is greater than the preset amplitude, it means that there is a lot of turbulence in the sewage in the sedimentation tank 10. Excessive turbulence may cause uneven contact between the filter 2 and the sewage. The circulation flow rate needs to be reduced until the fluctuation amplitude is less than or equal to the preset amplitude.

[0035] Step 150 : If the TDS parameter is lower than the second preset value and the first water level of the sewage in the sedimentation tank 10 is lower than the first preset water level, inject the sewage to be treated into the sedimentation tank 10 .

[0036] In this step, under continuous filtering and pumping, a large amount of water and dissolved solids are pumped away by the pump 3, so that the TDS parameter and the sewage water level are continuously reduced. The TDS parameter is lower than the second preset value and the sewage water level is lower than the first preset water level, indicating that the sewage in the sedimentation tank 10 is greatly reduced. At this time, the sewage to be treated can be added to the sedimentation tank 10. Different second preset values ​​can be set according to the type of sewage to be treated. For example, the more turbid the sewage type, the larger the second preset value, making step 150 easier to trigger, so as to replenish the sewage to be treated as soon as possible, dilute the TDS parameter of the sewage in the sedimentation tank 10, and avoid the filter 2 from being blocked too quickly.

[0037] Step 160 : If the second water level in the filter chamber 201 is lower than the second preset water level, the wave-making device 1 is controlled to swing toward the filter chamber 201 to make waves.

[0038] In this step, the water level in the filter chamber 201 is monitored. If the water level is too low to the second preset water level, it means that the filter screen 2 is blocked, resulting in reduced permeability. At this time, the wave-making device 1 is controlled to turn to the filter chamber 201 to create flow for the filter screen 2 by swinging wave-making. On the one hand, the swinging wave-making can clean the sand, debris, etc. on the filter screen 2 by the sweeping water flow, and on the other hand, it can speed up the passage rate of sewage on the filter screen 2, thereby quickly replenishing and raising the water level in the filter chamber 201.

[0039] When this embodiment is used, the sewage in the sedimentation tank 10 is driven to circulate through the wave-making device 1. The circulating flow can improve the contact efficiency between the sewage and the filter screen 2, that is, improve the filtering capacity of the filter screen 2 per unit time. After the sewage is filtered by the filter screen 2, it enters the filter chamber 201 and is pumped away by the pump 3. When the fluctuation amplitude of the TDS parameter is too large, it means that there is too much turbulence. Too much turbulence may cause uneven contact between the filter screen 2 and the sewage. Uneven contact may cause the filter screen 2 to be blocked quickly, so it is necessary to reduce the circulation flow rate until the fluctuation amplitude is reduced. During the purification process, the water level in the sedimentation tank 10 is monitored. When the TDS parameter is low and the water level is too low, sewage is supplemented; when the water level in the filter chamber 201 is too low, swing waves are made toward the filter chamber 201 to clean the filter screen 2 and quickly replenish the water level in the filter chamber 201. In summary, this embodiment can improve the filtering efficiency of the filter and reduce the probability of filter blockage.

[0040] In one embodiment, if Figure 1 As shown, a plurality of sand retaining plates 4 are provided on the wall of the sedimentation tank 10 on the opposite side of the wave-making device 1. The sand retaining plates 4 have a mesh structure. The sand retaining plates 4 are arranged at an angle with the wall of the sedimentation tank 10, and the sand retaining plates 4 are inclined downward. A sand discharge port 101 is provided on the wall below the sand retaining plates 4, and the sand discharge port 101 is connected to the sand storage water tank 5. When this embodiment is used, the sewage flows in a circular flow, and some sand and gravel carried in the sewage are intercepted by the mesh structure of the sand retaining plates 4, while the circulating water flow will not be excessively affected by the sand retaining plates 4 with a mesh structure. A part of the intercepted sand and gravel enters the sand storage water tank 5 through the sand discharge port 101, and the sand storage water tank 5 can be cleaned of sand and gravel at a regular time in the later stage. The sand retaining plates 4 can effectively reduce the sand and gravel content in the sewage, reduce the possibility of the filter screen 2 being blocked, and thus ensure the filtering effect of the filter screen 2. Specifically, a curved surface is provided on the side of the sand discharge port 101 facing the inside of the sedimentation tank 10, so that the sand and gravel can enter the sand storage water tank 5 through the sand discharge port 101.

[0041] Figure 3 FIG. 1 is a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. Figure 1 As shown, the filter device also includes a rotation drive device 6, which is connected to the filter screen 2 and is configured to drive the filter screen 2 to rotate. Specifically, the rotation drive device 6 includes a driving gear, and the filter screen 2 is a cylindrical structure. The driving gear contacts the outer peripheral side of the cylindrical filter screen 2. A circle of teeth can be provided on the outer peripheral side of the filter screen 2 to engage with the driving gear. When the driving gear rotates, the filter screen 2 can be driven to rotate. A support shaft 202 is provided in the middle of the filter screen 2 to support the filter screen 2 to rotate. Figure 3 As shown, the water flow control method of the sedimentation tank for water pollution treatment also includes:

[0042] Step 170: If the second water level in the filter chamber 201 is lower than the second preset water level, the rotation drive device 6 is controlled to drive the filter screen 2 to rotate.

[0043] In this embodiment, if the water level in the filter chamber 201 is too low to the second preset water level, it means that the filter screen 2 is clogged and the permeability is reduced. At this time, the wave-making device 1 is not only controlled to turn to the filter chamber 201 to make waves in a swinging manner to clean the sand and debris on the filter screen 2, but also the filter screen 2 is controlled to rotate. The rotating filter screen 2 can shake off the sand and debris, and at the same time can improve the contact efficiency between the sewage and the filter screen 2, that is, speed up the passing rate of the sewage on the filter screen 2, so as to quickly replenish and raise the water level in the filter chamber 201.

[0044] Figure 4 FIG. 1 is a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. Figure 4 As shown, the water flow control method of the sedimentation tank for water pollution treatment also includes:

[0045] Step 180: If the second water level in the filter chamber 201 starts to rise from a water level lower than the second preset water level, the rotation drive device 6 is controlled to start changing speed and decelerating.

[0046] In this embodiment, when the water level in the filter chamber 201 begins to rise, it means that the amount of sand and stones blocking the filter screen 2 is reduced, and the rotation speed of the filter screen 2 can be appropriately reduced, that is, the speed of the rotating drive device 6 can be reduced.

[0047] Specifically, the relationship between the deceleration rate Δv1 of the rotating drive device 6 and the water level rise rate Δv2 of the second water level satisfies: Δv1=h*Δv2, and the parameter h is positively correlated with the number of meshes of the filter 2. The more meshes there are, the greater the value of the parameter h. At the same water level rise rate Δv2, the more meshes there are, the greater the deceleration rate Δv1 of the rotating drive device 6, that is, the more meshes there are, the higher the pass rate of sewage through the filter 2, and the filter 2 does not need to rotate quickly, and a larger deceleration rate Δv1 can be used to stop. At the same number of meshes, the larger the water level rise rate Δv2, the faster the water level in the filter chamber 201 rises, indicating that the blockage rate of the filter 2 is low, and the filter 2 does not need to rotate quickly, and a larger deceleration rate Δv1 can be used to stop.

[0048] Figure 5 FIG. 1 is a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. Figure 5 As shown, the water flow control method of the sedimentation tank for water pollution treatment also includes:

[0049] Step 190: If the rotation speed of the water pump 3 is lower than the safe rotation speed, the rotation drive device 6 is controlled to drive the filter screen 2 to rotate.

[0050] Step 200 , controlling the wave-making device 1 to swing toward the filter chamber 201 to make waves.

[0051] In this embodiment, when the rotation speed of the water pump 3 is too low, it means that the water quality in the filter chamber 201 is too turbid, resulting in a decrease in the pumping efficiency of the water pump 3. At this time, the wave-making device 1 is controlled to swing toward the filter chamber 201 to make waves, which can improve the contact efficiency between the sewage and the filter screen 2, thereby increasing the amount of water entering the filter chamber 201 more quickly, thereby diluting the water in the filter chamber 201, and enabling the rotation speed of the water pump 3 to gradually recover.

[0052] Figure 6 FIG. 1 is a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. Figure 1As shown, the bottom wall of the sand storage tank 5 is lower than the bottom wall of the sedimentation tank 10. Figure 6 As shown, the water flow control method of the sedimentation tank for water pollution treatment also includes:

[0053] Step 210 , monitoring the sand content of the sand storage water tank 5 .

[0054] Step 220: If the sand content is greater than the preset sand content, the water pump 3 and the wave-making device 1 are controlled to stop.

[0055] Step 230: Control the rotation drive device 6 to drive the filter screen 2 to rotate.

[0056] When this embodiment is used, the pumping pump 3 and the wave-making device 1 are controlled to stop according to the sand content in the sand storage water tank 5. When the sand content is too high, the sand storage water tank 5 cannot store more sand and gravel, which may lead to the low sand discharge effect of the sand baffle 4 and fail to effectively reduce the sand content in the sedimentation tank 10. At this time, the pumping pump 3 and the wave-making device 1 are stopped, the water purification work is stopped, and the filter screen 2 is controlled to start rotating to get rid of the sand and gravel debris adhering to the filter screen 2, so as to prepare for the next water purification work.

[0057] Figure 7 FIG. 1 is a schematic diagram of the steps of a method for controlling water flow in a sedimentation tank for water pollution treatment provided by another embodiment of the present application. Figure 7 As shown, the water flow control method of the sedimentation tank for water pollution treatment also includes:

[0058] Step 240: According to the source type of the sewage, call the corresponding first preset value and second preset value.

[0059] In this embodiment, in areas with poor water quality, the value of the first preset value can be reduced and the value of the second preset value can be increased, thereby reducing the triggering conditions of step 120 and step 150, making step 120 and step 150 easier to trigger, that is, increasing the reaction speed of step 120 and step 150, so that the execution reaction speed matches the local water quality, so as to improve the sewage treatment efficiency. In areas with good water quality, the value of the first preset value can be increased and the value of the second preset value can be reduced, thereby reducing the reaction speed of step 120 and step 150, so that the execution reaction speed matches the local water quality, so that the sewage treatment efficiency matches the local water quality.

[0060] An exemplary sedimentation tank water flow control system for water pollution treatment is as follows:

[0061] Figure 8 The present application also provides a water flow control system for a sedimentation tank for water pollution treatment, such as Figure 1As shown, a wave-making device 1 and a filtering device are provided in the sedimentation tank 10. The wave-making device 1 is arranged on the wall of the sedimentation tank 10. The filtering device includes a filter screen 2 and a pump 3. The filter screen 2 has a filter cavity 201. The filter cavity 201 is immersed in the sewage to be treated in the sedimentation tank 10. The pump 3 is arranged in the filter cavity 201. The distance between the outer wall of the filter screen 2 and the wall of the sedimentation tank 10 is greater than a preset distance. Figure 8 As shown, the water flow control system of the sedimentation tank for water pollution treatment includes: a data acquisition module 801, a first wave making control module 802, a second wave making control module 803, a third wave making control module 804, a water injection module 805 and a fourth wave making control module 806.

[0062] The data acquisition module 801 is configured to obtain TDS parameters of the sedimentation tank 10 .

[0063] The first wave-making control module 802 is communicatively connected to the data acquisition module 801, and the first wave-making control module 802 is configured as follows: if the TDS parameter is greater than a first preset value, the wave-making direction of the wave-making device 1 is controlled to be parallel to the wall surface where the wave-making device 1 is located, so as to drive the sewage to circulate in the sedimentation tank 10 at a first flow velocity acceleration.

[0064] The second wave-making control module 803 is communicatively connected with the data acquisition module 801, and the second wave-making control module 803 is configured to: obtain the circulation velocity of the sewage in real time, if the circulation velocity exceeds the first preset velocity, control the coolant to circulate at a uniform speed through the wave-making device 1, and control the water pump 3 to start pumping water.

[0065] The third wave-making control module 804 is communicatively connected to the data acquisition module 801, and the third wave-making control module 804 is configured as follows: if the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than the preset amplitude, the driving power of the wave-making device 1 is reduced to reduce the circulation flow rate until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude.

[0066] The water injection module 805 is in communication connection with the data acquisition module 801 , and the water injection module 805 is configured to inject the sewage to be treated into the sedimentation tank 10 if the TDS parameter is lower than the second preset value and the first water level of the sewage in the sedimentation tank 10 is lower than the first preset water level.

[0067] The fourth wave-making control module 806 is in communication connection with the data acquisition module 801 . The fourth wave-making control module 806 is configured to control the wave-making device 1 to swing toward the filter chamber 201 to make waves if the second water level in the filter chamber 201 is lower than the second preset water level.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 controlling water flow in a sedimentation tank for water pollution treatment, characterized in that: The sedimentation tank (10) is provided with a wave-making device (1) and a filtering device, wherein the wave-making device (1) is arranged on the wall surface of the sedimentation tank (10), and the filtering device comprises a filter screen (2) and a water pump (3), wherein the filter screen (2) has a filtering cavity (201), and the filtering cavity (201) is immersed in the sewage to be treated in the sedimentation tank (10), and the water pump (3) is arranged in the filtering cavity (201), and the distance between the outer wall of the filter screen (2) and the wall surface of the sedimentation tank (10) is greater than a preset distance; The water flow control method of the sedimentation tank for water pollution treatment comprises: Obtaining TDS parameters of the sedimentation tank (10); If the TDS parameter is greater than a first preset value, the wave-making direction of the wave-making device (1) is controlled to be parallel to the wall surface where the wave-making device (1) is located, so as to drive the sewage to circulate in the sedimentation tank (10) at a first flow rate acceleration; The circulation velocity of the sewage is obtained in real time. If the circulation velocity exceeds a first preset velocity, the cooling liquid is controlled to circulate at a uniform speed through the wave-making device (1), and the water pump (3) is controlled to start pumping water; If the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than a preset amplitude, reducing the driving power of the wave-making device (1) to reduce the circulation flow rate until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude; If the TDS parameter is lower than a second preset value and the first water level of the sewage in the sedimentation tank (10) is lower than a first preset water level, injecting sewage to be treated into the sedimentation tank (10); and If the second water level in the filter chamber (201) is lower than the second preset water level, the wave-making device (1) is controlled to swing toward the filter chamber (201) to make waves.

2. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 1, characterized in that: A plurality of sand retaining plates (4) are provided on the wall surface of the sedimentation tank (10) on the opposite side of the wave-making device (1), wherein the sand retaining plates (4) have a mesh structure, are arranged at an angle to the wall surface of the sedimentation tank (10), and are inclined downward.

3. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 2, characterized in that: A sand discharge port (101) is provided on the wall surface below the sand retaining plate (4), and the sand discharge port (101) is connected to the sand storage water tank (5).

4. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 3, characterized in that: The filtering device further comprises a rotation driving device (6), the rotation driving device (6) being connected to the filter screen (2), and the rotation driving device (6) being configured to drive the filter screen (2) to rotate; The water flow control method for the sedimentation tank for water pollution treatment also includes: If the second water level in the filter chamber (201) is lower than the second preset water level, the rotation drive device (6) is controlled to drive the filter screen (2) to rotate.

5. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 4, characterized in that: Also includes: If the second water level in the filter chamber (201) starts to rise from a water level lower than the second preset water level, the rotation drive device (6) is controlled to start changing speed and decelerating.

6. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 5, characterized in that: The relationship between the deceleration rate Δv1 of the rotation drive device (6) and the water level rise rate Δv2 of the second water level satisfies: Δv1=h*Δv2, where h is positively correlated with the number of meshes of the filter (2).

7. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 4, characterized in that: Also includes: If the rotation speed of the water pump (3) is lower than the safe rotation speed, the rotation drive device (6) is controlled to drive the filter screen (2) to rotate; as well as The wave-making device (1) is controlled to swing toward the filter chamber (201) to make waves.

8. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 4, characterized in that: The bottom wall of the sand storage tank (5) is lower than the bottom wall of the sedimentation tank (10); The water flow control method for the sedimentation tank for water pollution treatment also includes: Monitoring the sand content of the sand storage water bin (5); If the sand content is greater than a preset sand content, the water pump (3) and the wave-making device (1) are controlled to stop; and The rotation drive device (6) is controlled to drive the filter screen (2) to rotate.

9. The method for controlling water flow in a sedimentation tank for water pollution treatment according to claim 1, characterized in that: Also includes: According to the water source type of the sewage, the corresponding first preset value and the second preset value are called.

10. A water flow control system for a sedimentation tank for water pollution treatment, characterized in that: The sedimentation tank (10) is provided with a wave-making device (1) and a filtering device, wherein the wave-making device (1) is arranged on the wall surface of the sedimentation tank (10), and the filtering device comprises a filter screen (2) and a water pump (3), wherein the filter screen (2) has a filtering cavity (201), and the filtering cavity (201) is immersed in the sewage to be treated in the sedimentation tank (10), and the water pump (3) is arranged in the filtering cavity (201), and the distance between the outer wall of the filter screen (2) and the wall surface of the sedimentation tank (10) is greater than a preset distance; The water flow control system of the sedimentation tank for water pollution treatment comprises: A data acquisition module is configured to: obtain TDS parameters of the sedimentation tank (10); A first wave-making control module is communicatively connected to the data acquisition module, and the first wave-making control module is configured to: if the TDS parameter is greater than a first preset value, control the wave-making direction of the wave-making device (1) to be parallel to the wall surface where the wave-making device (1) is located, so as to drive the sewage to circulate in the sedimentation tank (10) at a first flow rate acceleration; A second wave-making control module is communicatively connected to the data acquisition module, and the second wave-making control module is configured to: obtain the circulation velocity of the sewage in real time, and if the circulation velocity exceeds a first preset velocity, control the cooling liquid to circulate at a uniform velocity through the wave-making device (1), and control the water pump (3) to start pumping water; a third wave-making control module, which is in communication with the data acquisition module, and is configured to: if the fluctuation amplitude of the TDS parameter within the monitoring time period is greater than a preset amplitude, reduce the driving power of the wave-making device (1) to reduce the circulation flow rate until the fluctuation amplitude of the TDS parameter is less than or equal to the preset amplitude; a water injection module, which is in communication with the data acquisition module, and is configured to: if the TDS parameter is lower than a second preset value and the first water level of the sewage in the sedimentation tank (10) is lower than a first preset water level, inject sewage to be treated into the sedimentation tank (10); and A fourth wave-making control module is communicatively connected to the data acquisition module, and the fourth wave-making control module is configured to control the wave-making device (1) to swing toward the filter chamber (201) to make waves if the second water level in the filter chamber (201) is lower than the second preset water level.

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