Method and device for controlling algae-containing floating objects in settling pond of waterworks

Abstract

The invention provides a method and a device for controlling algae-containing floaters in a settling pond of a waterworks, and solves the problem that the algae-containing floaters are gathered and generated in the settling pond of the existing waterworks, so that the water quality is influenced. Corresponding control optimization measures are provided according to the generation condition of the algae-containing floating objects in the sedimentation tank, and the purpose of effectively, economically and appropriately removing the algae-containing floating objects is achieved. Besides, on the basis of generation reasons of algae-containing floating objects in the sedimentation tank, by optimizing the running mode and the running cycle of the travelling crane and improving the sludge discharging travelling crane of the sedimentation tank, generation of the floating objects is controlled, meanwhile, the sludge discharging efficiency of the sedimentation tank is effectively improved, the running stability of the sedimentation tank is enhanced, and the production safety of a water plant is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a method and device for controlling algae-containing floating substances in a sedimentation tank of a waterworks. Background Art

[0002] The sedimentation tank is one of the important structures in the existing water production process of waterworks. Its production efficiency and operation stability will affect the subsequent water production process and water quality. Affected by the continuous global warming trend, the risk of increasing the algal biomass in reservoirs is increasing. After the surface of alum flocs and accumulated sludge is colonized by algae, it further forms sheet-like yellow-green floating substances, which accumulate at the rear end of the sedimentation tank along with the water flow, resulting in an increase in the turbidity of the sedimentation tank effluent and poor sensory quality of the water body. Therefore, in view of the problem of the increasing aggregation of algae-containing floating substances in the sedimentation tank, exploring and researching a control technology and method for algae-containing floating substances in the sedimentation tank of a waterworks has important practical significance for improving the effluent quality of the sedimentation tank and reducing the production operation difficulty of the waterworks. Summary of the Invention

[0003] The present invention provides a method and device for controlling algae-containing floating substances in a sedimentation tank of a waterworks to solve the problem that algae-containing floating substances in the existing sedimentation tank of a waterworks aggregate and generate, thereby affecting water quality.

[0004] In a first aspect, the present invention provides a method for controlling algae-containing floating substances in a sedimentation tank of a waterworks, which specifically includes the following steps:

[0005] Obtain the basic parameters of the sedimentation tank of the waterworks, the sedimentation tank phenomenon parameters, and the sedimentation tank process parameters;

[0006] Among them, the basic parameters of the sedimentation tank include basic parameters such as flow rate and sedimentation tank size; the sedimentation tank phenomenon parameters include phenomenon parameters such as the generation of algae-containing floating substances in the sedimentation tank and the coverage area of algae-containing floating substances; the sedimentation tank process parameters include process parameters such as the type, operation mode, and operation cycle of the sludge removal traveling crane in the sedimentation tank.

[0007] Optimize the process parameters of the sedimentation tank according to the phenomenon parameters of the sedimentation tank;

[0008] According to the optimized process parameters of the sedimentation tank, control the sludge removal traveling crane to carry out sludge removal on the sedimentation tank; by controlling the sludge removal, reduce the probability of forming algae-containing floating substances after the accumulated sludge is colonized by algae, thereby inhibiting the generation of algae-containing floating substances in the sedimentation tank.

[0009] Preferably, the sludge removal traveling crane includes a sludge suction nozzle bracket for pumps, a sludge suction pipe, a sludge suction nozzle, and a sludge suction rack; wherein, the sludge suction rack spans across the sedimentation tank and is perpendicular to the moving direction of the sludge removal vehicle, and is used for supporting and positioning the sludge suction pipe; the sludge suction pipe is connected to the sludge suction nozzle through the sludge suction nozzle bracket for pumps; the sludge suction nozzle is close to the bottom of the sedimentation tank; a submersible pump (equipped with a coupler) is further connected to the sludge suction nozzle bracket for pumps, which is used to increase the speed of sludge suction.

[0010] More preferably, the number of the sludge suction pipes is one or at least two. When there are at least two sludge suction pipes, each sludge suction pipe is evenly distributed at equal intervals along the direction of the sludge suction rack.

[0011] Preferably, when there is no algae-containing floating matter in the sedimentation tank, sludge is removed by the siphon sludge removal traveling crane operation mode.

[0012] Preferably, when there is algae-containing floating matter in the sedimentation tank, if the coverage area of the algae-containing floating matter is less than the first coverage threshold, sludge is removed by the pump suction sludge removal traveling crane operation mode, and sludge removal operation is carried out by the first operation method.

[0013] Preferably, the first coverage threshold changes with the change of the basic parameters of the sedimentation tank.

[0014] More preferably, the first operation method specifically includes the following steps:

[0015] The pump suction sludge removal traveling crane takes 4N days as a cycle. In the first 2N days, starting from the first end of the sedimentation tank and ending at the second end of the sedimentation tank, the movement route from the starting point to the ending point represents a single route. In the second 2N days, it is a return operation (i.e., the starting point and the ending point are interchanged);

[0016] When operating in the first 2N days, each submersible pump is started at intervals of A seconds first, and the sludge removal vehicle stays in place for sludge removal for a to b minutes and then moves;

[0017] When the sludge removal vehicle moves to 1 / c to 1 / d of the single route, the operation of the submersible pump is stopped, and the sludge removal vehicle moves to the end point by the siphon sludge removal method. When reaching the end point, the exhaust electromagnetic valve is opened to stop the siphon;

[0018] When returning in the second 2N days, the sludge removal vehicle moves to the end point by the siphon sludge removal method. After stopping moving and maintaining sludge removal for a to b minutes, the exhaust electromagnetic valve is opened to stop the siphon.

[0019] Wherein, N, c, and d are all positive integers; A, a, and b are all positive numbers.

[0020] Preferably, c is set to 3 and d is set to 2.

[0021] Preferably, when algae-containing floating matter is generated in the sedimentation tank, if the coverage area of the algae-containing floating matter is greater than the first coverage threshold, sludge discharge is carried out by the operation mode of the pump-suction sludge removal traveling crane, and sludge discharge operation is carried out by the second operation method.

[0022] More preferably, the second operation method specifically includes the following steps:

[0023] The pump-suction sludge removal traveling crane takes 2N days as a cycle. In the first N days, it starts from the first end of the sedimentation tank and ends at the second end of the sedimentation tank. In the second N days, it runs in the reverse direction;

[0024] When running in the first N days, each submersible pump is started at intervals of A seconds in sequence. After the sludge removal traveling crane stays in place for sludge discharge for a to b minutes, it moves again;

[0025] When the sludge removal traveling crane moves to 1 / c to 1 / d of the single route, the operation of the submersible pump is stopped. The sludge removal traveling crane moves to the end point by the siphon sludge discharge method. When it reaches the end point, the exhaust electromagnetic valve is opened to stop the siphon;

[0026] When returning in the second N days, the sludge removal traveling crane moves to the end point by the siphon sludge discharge method. After stopping and maintaining sludge discharge for a to b minutes, the exhaust electromagnetic valve is opened to stop the siphon.

[0027] In a second aspect, the present invention also provides a control device for algae-containing floating matter in a sedimentation tank of a waterworks, which specifically includes the following modules:

[0028] A parameter acquisition module for acquiring the basic parameters of the sedimentation tank of the waterworks, the sedimentation tank phenomenon parameters, and the sedimentation tank process parameters; wherein, the basic parameters of the sedimentation tank include basic parameters such as flow rate and sedimentation tank size; the sedimentation tank phenomenon parameters include phenomenon parameters such as the generation of algae-containing floating matter in the sedimentation tank and the coverage area of the algae-containing floating matter; the sedimentation tank process parameters include process parameters such as the type, operation mode, and operation cycle of the sludge removal traveling crane of the sedimentation tank;

[0029] A process parameter optimization module for optimizing the process parameters of the sedimentation tank according to the phenomenon parameters of the sedimentation tank;

[0030] A sludge discharge control module for discharging sludge from the sedimentation tank by controlling the sludge removal traveling crane according to the optimized sedimentation tank process parameters.

[0031] Preferably, the sludge removal traveling crane includes a pump suction nozzle bracket, a suction pipe, a suction nozzle, and a suction rack; wherein, the suction rack spans across the sedimentation tank and is perpendicular to the movement direction of the sludge removal vehicle, and is used to support and position the suction pipe; the suction pipe is connected to the suction nozzle through the pump suction nozzle bracket; the suction nozzle is close to the bottom of the sedimentation tank; a submersible pump is also connected to the suction nozzle bracket to improve the speed of sludge suction.

[0032] More preferably, the sludge suction pipe is one or at least two. When there are at least two sludge suction pipes, each sludge suction pipe is equidistantly distributed along the direction of the sludge suction rack.

[0033] Preferably, when there is no algae-containing floating matter in the sedimentation tank, sludge is discharged by the siphon sludge removal traveling crane operation mode.

[0034] Preferably, when there is algae-containing floating matter in the sedimentation tank, if the coverage area of the algae-containing floating matter is less than the first coverage threshold, sludge is discharged by the pump suction sludge removal traveling crane operation mode, and sludge discharge operation is carried out by the first operation method.

[0035] Preferably, the first coverage threshold changes with the change of the basic parameters of the sedimentation tank.

[0036] More preferably, the first operation method specifically includes the following steps:

[0037] The pump suction sludge removal traveling crane takes 4N days as a cycle. In the first 2N days, starting from the first end of the sedimentation tank and ending at the second end of the sedimentation tank, the movement route from the starting point to the ending point represents a single route, and in the second 2N days, it runs in the reverse direction;

[0038] When operating in the first 2N days, each submersible pump is started at intervals of A seconds in sequence. The sludge removal traveling crane stays in place for sludge discharge for a to b minutes and then moves;

[0039] When the sludge removal traveling crane moves to 1 / c to 1 / d of the single route, the operation of the submersible pump is stopped, and the sludge removal traveling crane moves to the end point by siphon sludge removal method. When reaching the end point, the exhaust electromagnetic valve is opened to stop siphon;

[0040] When returning in the second 2N days, the sludge removal traveling crane moves to the end point by siphon sludge removal method. After stopping and maintaining sludge discharge for a to b minutes, the exhaust electromagnetic valve is opened to stop siphon.

[0041] Among them, N, c, and d are all positive integers; A, a, and b are all positive numbers.

[0042] Preferably, c is set to 3 and d is set to 2.

[0043] Preferably, when there is algae-containing floating matter in the sedimentation tank, if the coverage area of the algae-containing floating matter is greater than the first coverage threshold, sludge is discharged by the pump suction sludge removal traveling crane operation mode, and sludge discharge operation is carried out by the second operation method.

[0044] More preferably, the second operation method specifically includes the following steps:

[0045] The sludge suction and discharge traveling crane of the pump takes 2N days as a cycle. In the first N days, it starts from the first end of the sedimentation tank and ends at the second end of the sedimentation tank. In the second N days, it runs in the reverse direction;

[0046] When running in the first N days, each submersible pump is started at intervals of A seconds in sequence. After the sludge suction and discharge traveling crane stays in place for sludge discharge for a to b minutes, it moves;

[0047] When the sludge suction and discharge traveling crane moves to 1 / 3 to 1 / 2 of the single - route, the operation of the submersible pump is stopped. The sludge suction and discharge traveling crane moves to the end point by means of siphon sludge discharge. When it reaches the end point, the exhaust electromagnet is turned on to stop the siphon;

[0048] When returning in the second N days, the sludge suction and discharge traveling crane moves to the end point by means of siphon sludge discharge. After stopping moving and maintaining sludge discharge for a to b minutes, the exhaust electromagnet is turned on to stop the siphon.

[0049] In a third aspect, the present invention also provides a computer - readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements a control method for algae - containing floating substances in a sedimentation tank of a waterworks as described in any one of the first aspects of the present application.

[0050] In a fourth aspect, the present invention also provides an electronic device. The electronic device includes: a memory storing a computer program; a processor communicatively connected to the memory, and when calling the computer program, executes a control method for algae - containing floating substances in a sedimentation tank of a waterworks as described in any one of the first aspects of the present application.

[0051] Compared with the prior art, the present invention has the following obvious and prominent substantial features and remarkable advantages:

[0052] The present invention provides a control method and device for algae - containing floating substances in a sedimentation tank of a waterworks, which solves the problem that algae - containing floating substances in the existing sedimentation tank of a waterworks gather and generate, thereby affecting water quality. In view of the generation situation of algae - containing floating substances in the sedimentation tank, corresponding control and optimization measures are proposed, achieving the purpose of effectively, economically and appropriately removing algae - containing floating substances. In addition, based on the generation reasons of algae - containing floating substances in the sedimentation tank, by optimizing the operation mode, operation cycle of the traveling crane and improving the sludge suction and discharge traveling crane of the sedimentation tank, while controlling the generation of floating substances, the sludge discharge efficiency of the sedimentation tank is effectively improved, the operation stability of the sedimentation tank is enhanced, and the production safety of the waterworks is further guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0054] Figure 1Schematic flow chart of a method for controlling algae-containing floating substances in a sedimentation tank of a waterworks according to the present invention.

[0055] Figure 2 Schematic diagram of an improved sludge removal traveling crane structure for a method for controlling algae-containing floating substances in a sedimentation tank of a waterworks according to the present invention.

[0056] Figure 3 Schematic diagram of the operation of a sludge removal traveling crane for a method for controlling algae-containing floating substances in a sedimentation tank of a waterworks according to the present invention. Detailed implementation manners

[0057] The present invention provides a method and device for controlling algae-containing floating substances in a sedimentation tank of a waterworks. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0059] Example:

[0060] As Figures 1 - 3 shown, a method for controlling algae-containing floating substances in a sedimentation tank of a waterworks according to this embodiment specifically includes the following steps:

[0061] Step S1, obtaining the basic parameters of the sedimentation tank of the waterworks, the phenomenon parameters of the sedimentation tank, and the process parameters of the sedimentation tank; wherein, the basic parameters of the sedimentation tank include basic parameters such as flow rate and sedimentation tank size; the phenomenon parameters of the sedimentation tank include phenomenon parameters such as the generation of algae-containing floating substances in the sedimentation tank and the coverage area of algae-containing floating substances; the process parameters of the sedimentation tank include process parameters such as the type, operation mode, and operation cycle of the sludge removal traveling crane of the sedimentation tank.

[0062] In this embodiment, as Figure 2As shown in the figure, the sludge removal traveling crane includes a suction nozzle bracket 1 for pumps, a suction pipe 2, a suction nozzle 3, and a suction rack 4. Among them, the suction rack 4 spans across the sedimentation tank and is perpendicular to the moving direction of the sludge removal vehicle, and is used to support and position the suction pipe 2. The suction pipe 2 is connected to the suction nozzle 3 through the suction nozzle bracket 1 for pumps. The suction nozzle 3 is close to the bottom of the sedimentation tank. A submersible pump 5 (equipped with a coupling) is also connected to the suction nozzle bracket 1 for improving the sludge suction speed. In this embodiment, there are eight suction pipes 2, and each suction pipe 2 is evenly distributed along the direction of the suction rack 4. By installing a submersible pump 5 (equipped with a coupling) on the sludge removal traveling crane and optimizing and improving the sludge removal traveling crane, different sludge suction methods such as pump suction and siphon can be further realized. The flow rate of one submersible pump is 20m 3 / h. After 12 submersible pumps are installed and improved, the sludge discharge volume can reach 220m 3 / h, while the original siphon sludge discharge volume is only 98m 3 / h. When the phenomenon of floating matter in the sedimentation tank occurs, the improvement of the sludge removal traveling crane can greatly improve the timely discharge of accumulated sludge, reduce the possibility of algae growing on the accumulated sludge and then forming algae-containing floating matter, thereby inhibiting the generation of floating matter in the sedimentation tank.

[0063] Step S2: Optimize the process parameters of the sedimentation tank according to the phenomenon parameters of the sedimentation tank.

[0064] In this embodiment, when no algae-containing floating matter is generated in the sedimentation tank, sludge is discharged through the operation mode of the siphon sludge removal traveling crane.

[0065] In this embodiment, when algae-containing floating matter is generated in the sedimentation tank, if the coverage area of the algae-containing floating matter is less than 0.2m 2 ², sludge is discharged through the operation mode of the pump suction sludge removal traveling crane, and sludge discharge operation is carried out through the first operation method.

[0066] Optionally, the first operation method specifically includes the following steps:

[0067] A1. The pump suction sludge removal traveling crane takes 2 days as a cycle. On the first day, starting from the first end of the sedimentation tank and ending at the second end of the sedimentation tank, the movement route from the starting point to the ending point represents a single route, and on the second day, it is a return trip.

[0068] A2. When operating on the first day, first start each submersible pump at intervals of 5 seconds in turn. The sludge removal traveling crane stays in place for sludge discharge for 2 - 3 minutes and then moves.

[0069] A3. When the sludge removal traveling crane moves to 1 / 3 - 1 / 2 of the single route, stop the operation of the submersible pump. The sludge removal traveling crane moves to the end point through the siphon sludge discharge method, and when reaching the end point, turn on the exhaust electromagnetic valve to stop siphoning.

[0070] A4. On the second day when returning, the sludge removal traveling crane moves to the end point by means of siphon sludge removal. After stopping and maintaining sludge removal for 2 - 3 minutes, the exhaust electromagnetic valve is opened to stop the siphon.

[0071] In this embodiment, when the sedimentation tank generates algae - containing floating matter, if the coverage area of the algae - containing floating matter is greater than 0.2 m 2 ², sludge removal is carried out by the operation mode of the pump - suction type sludge removal traveling crane, and sludge removal operation is carried out by the second operation method.

[0072] Among them, the second operation method specifically includes the following steps:

[0073] B1. The pump - suction sludge removal traveling crane takes one day as a cycle. In the first half of the day, it starts from the first end of the sedimentation tank and ends at the second end of the sedimentation tank. In the second half of the day, it runs for the return journey;

[0074] B2. When running in the first half of the day, each submersible pump is started at intervals of 5 seconds in sequence. After the sludge removal traveling crane stays in place for sludge removal for 2 - 3 minutes, it moves;

[0075] B3. When the sludge removal traveling crane moves to 1 / 3 - 1 / 2 of the single - route, the operation of the submersible pump is stopped. The sludge removal traveling crane moves to the end point by means of siphon sludge removal. When it reaches the end point, the exhaust electromagnetic valve is opened to stop the siphon;

[0076] B4. When returning in the second half of the day, the sludge removal traveling crane moves to the end point by means of siphon sludge removal. After stopping and maintaining sludge removal for 2 - 3 minutes, the exhaust electromagnetic valve is opened to stop the siphon.

[0077] Step S3. According to the optimized technological parameters of the sedimentation tank, the sedimentation tank is subjected to sludge removal by controlling the sludge removal traveling crane. According to the above - mentioned specific technological parameters and technological steps, the sedimentation tank is subjected to sludge removal.

[0078] Figure 3 For Figure 3This is a schematic diagram of the sludge removal traveling crane operation for a method of controlling algae-containing floating substances in the sedimentation tank of a waterworks according to the present invention. The operation mode of the sludge removal traveling crane is optimized and adjusted to a two-day cycle. On the first day, it starts from the end of the perforated wall and ends at the end of the finger-shaped trough, and on the second day, it runs in the reverse direction. When operating on the first day, each submersible pump is started at intervals of 5 seconds in sequence to avoid excessive current caused by simultaneous startup and damage to the equipment. Generally, the sediment accumulation at the front end of the sedimentation tank is the most serious, and the sediment accumulation in the middle and rear sections gradually decreases. Therefore, the operation mode is optimized and adjusted to stay in place for sludge removal for 2 to 3 minutes. The specific sludge removal time can also be further adjusted up and down according to the actual sediment accumulation situation. Then, the traveling crane moves for sludge removal and stops the pump when it reaches 1 / 3 to 1 / 2 of the sedimentation tank. Subsequently, the traveling crane can move to the end point in the way of siphon sludge removal. When reaching the end limit, the exhaust electromagnetic valve is opened to break the siphon. When returning on the second day, it moves to the end limit in the way of siphon sludge removal and stays in place for sludge removal for 2 to 3 minutes at the end limit as well. Then, the exhaust electromagnetic valve is opened to break the siphon. In addition, the operation cycle can be further optimized and adjusted to a one-day cycle. By optimizing the operation mode and operation cycle of the sludge removal traveling crane, the sludge removal effect is further improved, thereby inhibiting the generation of algae-containing floating substances and improving the operation performance of the sedimentation tank.

[0079] The specific embodiments of the present invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A method for controlling algae-containing floating objects in a water plant sedimentation tank, characterized in that: The specific steps include: Obtain the basic parameters, phenomenon parameters and process parameters of the sedimentation tank of the water plant; Among them, the basic parameters of the sedimentation tank include flow rate and sedimentation tank size; the phenomenon parameters of the sedimentation tank include the generation of algae-containing floating objects in the sedimentation tank and the coverage area of ​​algae-containing floating objects; the process parameters of the sedimentation tank include the type, operation mode and operation cycle of the sedimentation tank mud discharge vehicle; Optimizing the process parameters of the sedimentation tank according to the phenomenon parameters of the sedimentation tank; According to the optimized process parameters of the sedimentation tank, the sedimentation tank is drained by controlling the mud discharge vehicle.

2. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 1, characterized in that: The mud discharge vehicle includes a pump suction nozzle bracket, a mud suction pipe, a mud suction nozzle and a mud suction frame; wherein the mud suction frame spans the sedimentation tank and is perpendicular to the movement direction of the mud discharge vehicle, and is used to support and position the mud suction pipe; the mud suction pipe is connected to the mud suction nozzle through the pump suction nozzle bracket; the mud suction nozzle is close to the bottom of the sedimentation tank; the mud suction nozzle bracket is also connected to a submersible pump to increase the mud suction speed.

3. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 2, characterized in that: The number of the mud suction pipe is one or at least two. When the number of the mud suction pipe is at least two, each of the mud suction pipes is distributed at equal intervals along the direction of the mud suction frame.

4. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 1, characterized in that: When the sedimentation tank does not produce algae-containing floating objects, the sludge is discharged through the siphon-type sludge discharge vehicle operation mode; when the sedimentation tank produces algae-containing floating objects, if the coverage area of ​​the algae-containing floating objects is smaller than the first coverage threshold, the sludge is discharged through the pump-suction-type sludge discharge vehicle operation mode, and the sludge discharge operation is performed through the first operation method.

5. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 4, characterized in that: The first coverage threshold changes as the basic parameters of the sedimentation tank change.

6. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 4, characterized in that: The first operation method specifically comprises the following steps: The pump suction mud discharge vehicle has a cycle of 4N days. The first 2N days start from the first end of the sedimentation tank and end at the second end of the sedimentation tank. The movement route from the starting point to the end point represents a single route, and the second 2N days is a return trip. During the first 2N days of operation, each submersible pump is started in turn at intervals of A seconds, and the mud discharge vehicle stays in place for a to b minutes before moving again; When the mud discharge vehicle moves to 1 / c~1 / d of the single route, the submersible pump is stopped, and the mud discharge vehicle moves to the end point by siphoning mud. When it reaches the end point, the exhaust solenoid is turned on to stop the siphoning; On the second 2N-day return trip, the mud-discharging vehicle moves to the end point by siphoning mud, stops moving and keeps discharging mud for a to b minutes, then turns on the exhaust solenoid to stop siphoning; Among them, N, c, and d are all positive integers; A, a, and b are all positive numbers.

7. A method for controlling algae-containing floating objects in a water plant sedimentation tank according to claim 1, characterized in that: When algae-containing floating objects are generated in the sedimentation tank, if the coverage area of ​​the algae-containing floating objects is greater than the first coverage threshold, the mud is discharged through the pump-suction mud discharge vehicle operation mode, and the mud discharge operation is performed through the second operation method.

8. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 7, characterized in that: The second operation method specifically comprises the following steps: The pump suction mud discharge vehicle has a cycle of 2N days, the first N days start from the first end of the sedimentation tank and end at the second end of the sedimentation tank, and the second N days are return trips; During the first N days of operation, each submersible pump is started in turn with an interval of A seconds, and the mud discharge vehicle stays in place for a to b minutes before moving again; When the mud discharge vehicle moves to 1 / c~1 / d of the single route, the submersible pump is stopped, and the mud discharge vehicle moves to the end point by siphoning mud. When it reaches the end point, the exhaust solenoid is turned on to stop the siphoning; On the second N-day return trip, the mud-discharging vehicle moves to the end point by siphoning mud, stops moving and keeps discharging mud for a to b minutes, then turns on the exhaust solenoid to stop siphoning; Among them, N, c, and d are all positive integers; A, a, and b are all positive numbers.

9. A method for controlling algae-containing floating objects in a waterworks sedimentation tank according to claim 6 or 8, characterized in that: N is set to 1, a is set to 2, b is set to 3, c is set to 3, and d is set to 2.

10. A control device for algae-containing floating objects in a sedimentation tank of a waterworks, characterized in that: The modules include: The parameter acquisition module is used to obtain the basic parameters of the sedimentation tank of the water plant, the phenomenon parameters of the sedimentation tank and the process parameters of the sedimentation tank; wherein the basic parameters of the sedimentation tank include flow rate and sedimentation tank size; the phenomenon parameters of the sedimentation tank include the generation of algae-containing floating objects in the sedimentation tank and the coverage area of ​​the algae-containing floating objects; the process parameters of the sedimentation tank include the type, operation mode and operation cycle of the sedimentation tank mud discharge vehicle; A process parameter optimization module, used to optimize the process parameters of the sedimentation tank according to the phenomenon parameters of the sedimentation tank; The mud discharge control module is used to discharge mud from the sedimentation tank by controlling the mud discharge vehicle according to the optimized sedimentation tank process parameters.

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