Intermittent oxygenation in-situ water quality improvement synchronous algae control device and method thereof

Abstract

The present application belongs to the technical field of water treatment, and relates to an intermittent oxygenation in-situ water quality improvement synchronous algae control device, comprising: a floating platform, a first water tank, a drainage assembly, an aeration assembly, an ultrasonic assembly and a control assembly. The present application intermittently starts the aeration assembly and the ultrasonic assembly through the control assembly, intermittently oxygenates through the aeration assembly, simultaneously sends the algal bloom on the water surface into the first water tank through the outer cylinder and the inner cylinder, and then utilizes the ultrasonic assembly to emit ultrasonic waves to destroy the air bag of the algal bloom, so that the algal bloom loses buoyancy and is discharged into the middle layer of the water body and can sink downward under the action of gravity. On the one hand, in-situ algae control can be performed, and on the other hand, water quality of the water body can be improved through oxygenation to avoid the formation of anoxic water body, so that in-situ water quality improvement and in-situ algae control are simultaneously performed. Not only the operation cost and energy consumption are reduced, but also the algae is reduced and the water quality of the water body is improved, so that the effect of improving the water quality of the lake and reservoir water body is improved, and the safety of taking water from the lake and reservoir is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water treatment, and relates to an intermittent oxygenation in-situ water quality improvement synchronous algae control device and a method thereof. BACKGROUND

[0002] Lakes and reservoirs will face multiple water quality problems due to their unique hydraulic conditions, and the common problems include thermal stratification and algal bloom. In recent years, with the rising of air temperature year by year, the thermal stratification and algal bloom of lakes and reservoirs have become increasingly serious, which has derived the middle layer anoxic phenomenon, that is, the algal bloom in the surface layer will gradually settle in the middle layer of the water body to form the maximum value of chlorophyll in the subsurface layer of the lake and reservoir, and the algal bloom in the layer will rapidly consume a large amount of dissolved oxygen due to respiration, thereby causing the formation of anoxic phenomenon in the lake and reservoir. In order to avoid the water quality problems caused by the surface algal bloom and the bottom anaerobic release, most lakes and reservoirs set the water intake near the middle layer. Therefore, the water quality of the lake and reservoir water body is directly related to the water intake safety, and the water quality improvement of the middle and upper layers is related to the control of algae.

[0003] At present, the existing improvement technologies for the water body of the lake and reservoir include the surface layer mixing and oxygenation technology, the isotherm layer oxygenation technology, the artificial forced mixing technology for the whole water layer and the water lifting aeration technology; the algae control technologies include the hydrodynamic algae control, the ultrasonic algae control, the deep well pressurization algae control and the oxidation emergency algae control. However, the above-mentioned technologies have the defects of high operation cost and energy consumption, and limited improvement effect of the water quality of the lake and reservoir, which affects the safety of the water intake of the lake and reservoir. SUMMARY

[0004] The purpose of the present application is to provide an intermittent oxygenation in-situ water quality improvement synchronous algae control device and a method thereof, which can reduce the operation cost and energy consumption, improve the improvement effect of the water quality of the lake and reservoir, and ensure the safety of the water intake of the lake and reservoir.

[0005] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows:

[0006] An intermittent oxygenation in-situ water quality improvement synchronous algae control device comprises:

[0007] A floating platform is provided with a first water tank in the upper part, and the first water tank is connected with a water drainage assembly;

[0008] A water lifting assembly comprises an outer cylinder and an inner cylinder which are vertically arranged below the floating platform, the lower end of the outer cylinder is a closed structure, the inner cylinder is arranged in the outer cylinder and connected with the outer cylinder through a connecting piece, the upper end of the inner cylinder is communicated with the first water tank, and the upper end of the outer cylinder is provided with a flow guide assembly for guiding the algal bloom and water into the outer cylinder;

[0009] The aeration assembly comprises a first aeration unit and a second aeration unit, the first aeration unit is arranged on the side of the outer cylinder and close to the lower end of the outer cylinder, the second aeration unit is arranged in the inner cylinder and close to the lower end of the inner cylinder, the first aeration unit and the second aeration unit are connected with a compressed air supply assembly, the compressed air supply assembly is used for preparing compressed air, the first aeration unit is used for oxygenating water and pushing the algae and water into the outer cylinder by using bubbles generated by the compressed air, and the second aeration unit is used for oxygenating water and pushing the algae and water into the first water tank by using bubbles generated by the compressed air.

[0010] The ultrasonic assembly is arranged on the first water tank and is used for destroying the algae by using ultrasonic waves.

[0011] The control assembly is electrically connected with the aeration assembly and the ultrasonic assembly respectively and is used for intermittently starting the aeration assembly and the ultrasonic assembly.

[0012] The application has the following characteristics:

[0013] The first aeration unit is a first microporous aerator, the second aeration unit is a second microporous aerator, and the first microporous aerator and the second microporous aerator are electrically connected with the control assembly.

[0014] The ultrasonic assembly comprises:

[0015] The first ultrasonic generator is arranged on the first water tank and is used for acting ultrasonic waves on the algae in the first water tank.

[0016] The second water tank is in communication with the first water tank, and the second water tank is connected with the drainage assembly.

[0017] The second ultrasonic generator is arranged on the second water tank and is used for acting ultrasonic waves on the algae in the second water tank.

[0018] The lower part of the floating platform is vertically provided with an electric telescopic rod, the upper end of the electric telescopic rod is connected with the lower part of the floating platform, the lower end of the electric telescopic rod is provided with a detection sensor, the detection sensor is electrically connected with the control assembly, the detection sensor is used for detecting the water temperature, the dissolved oxygen content and the chlorophyll a content in water in real time and feeding back the water temperature, the dissolved oxygen content and the chlorophyll a content to the control assembly, and the control assembly compares the water temperature, the dissolved oxygen content and the chlorophyll a content with preset values of the water temperature, the dissolved oxygen content and the chlorophyll a content, confirms that the detection sensor is located in the middle layer of the water body, and controls the intensity of the aeration assembly and the frequency of the ultrasonic assembly.

[0019] The drainage assembly comprises:

[0020] The water outlet pipe is arranged on the lower part of the floating platform, and the upper end of the water outlet pipe is connected with the second water tank.

[0021] The first telescopic pipe is arranged at the lower end of the water outlet pipe, the upper end of the first telescopic pipe is connected with the water outlet pipe, and the lower end of the first telescopic pipe is connected with the lower end of the electric telescopic rod.

[0022] The flow guide assembly comprises:

[0023] The adjusting cylinder is arranged at the upper end of the outer cylinder, the upper end of the adjusting cylinder is in a funnel-shaped structure, the lower end of the adjusting cylinder is located in the outer cylinder and is in a sliding connection with the inner part of the outer cylinder;

[0024] A plurality of floats are arranged at the upper end of the adjusting cylinder and are uniformly arranged along the circumference of the adjusting cylinder.

[0025] The upper end of the outer cylinder is provided with the adjusting cylinder, the upper end of the adjusting cylinder is in a funnel-shaped structure, the lower end of the adjusting cylinder is located in the outer cylinder and is in a sliding connection with the inner part of the outer cylinder, and the upper end of the adjusting cylinder is uniformly provided with a plurality of floats along the circumference thereof.

[0026] The hoisting support is arranged at the position close to the inner cylinder on the upper part of the floating platform, the fixed pulley is arranged at the position directly above the inner cylinder on the lower part of the hoisting support, the hoisting winch is arranged on the floating platform, the inner cylinder is connected with the first water tank through the second telescopic pipe, and the hoisting winch is connected with the inner cylinder through the hoisting rope.

[0027] The compressed air supply assembly is connected with the first micro-porous aerator and the second micro-porous aerator through the gas conveying pipe, the first pipeline winch is arranged on the upper part of the floating platform, and part of the gas conveying pipe is wound on the first pipeline winch.

[0028] The sleeve ring is arranged at the position close to the first micro-porous aerator on the side of the outer cylinder, the sleeve ring is in a sliding connection with the side of the outer cylinder along the length direction of the outer cylinder, the lower part of the sleeve ring is connected with the first micro-porous aerator, the two second pipeline winches are arranged on the upper part of the floating platform and are arranged symmetrically at the positions on both sides of the outer cylinder, and each second pipeline winch is connected with the upper part of the sleeve ring through the pull rope.

[0029] A method for improving water quality and simultaneously controlling algae in situ by intermittent oxygenation, comprising the following steps:

[0030] The detection sensor is used to detect the water temperature, the dissolved oxygen content and the chlorophyll a content in water in real time, and the detection sensor feeds back the water temperature, the dissolved oxygen content and the chlorophyll a content to the control assembly.

[0031] The control assembly compares the water temperature, the dissolved oxygen content and the chlorophyll a content received by the control assembly with the preset values of the water temperature, the dissolved oxygen content and the chlorophyll a content, confirms that the detection sensor is located in the middle layer of the water body, and then intermittently starts the aeration assembly and the ultrasonic assembly and controls the intensity of the aeration assembly and the frequency of the ultrasonic assembly.

[0032] The aeration assembly utilizes compressed air to generate bubbles outside the outer cylinder and inside the inner cylinder, the bubbles outside the outer cylinder intermittently push the algae and water into the outer cylinder while intermittently oxygenating the middle layer of the water body, the algae and water flow to the bottom of the outer cylinder under the action of gravity and enter the inner cylinder, and the bubbles in the inner cylinder oxygenate the water therein while pushing the algae and water into the first water tank;

[0033] The ultrasonic assembly synchronously generates ultrasonic waves acting on the algae, utilizes ultrasonic cavitation and disturbance to destroy the air sacs of the algae, so that the algae loses buoyancy, and finally utilizes the drainage assembly to drain the algae and water to the middle layer of the water body.

[0034] The intermittent oxygenation in-situ water quality improvement synchronous algae control device and method has the following advantages:

[0035] The present application can intermittently start the aeration assembly and the ultrasonic assembly through the control assembly, oxygenate intermittently through the aeration assembly, and send the algae on the water surface into the first water tank through the outer cylinder and the inner cylinder, then utilize the ultrasonic assembly to emit ultrasonic waves to destroy the air sacs of the algae, so that the algae loses buoyancy and sinks downward under the action of gravity after being drained to the middle layer of the water body, which can not only control the algae in-situ, but also improve the water quality of the water body through oxygenation, avoid the formation of anoxic water body, realize the in-situ water quality improvement and in-situ algae control at the same time, reduce the operation cost and energy consumption, reduce the algae, improve the water quality of the water body, and thus improve the effect of improving the water quality of the lake and reservoir water body and ensure the safety of lake and reservoir water intake. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a front view structural schematic diagram of the present application.

[0037] Figure 2 It is a top view structural schematic diagram of the floating platform in the present application.

[0038] Figure 3 It is a front view structural schematic diagram of the connection between the outer cylinder and the first microporous aerator in the present application.

[0039] Figure 4 It is a dissolved oxygen concentration diagram of the water body under different operating conditions of the present application.

[0040] Figure 5 It is a complete algae cell percentage diagram of the present application.

[0041] Figure 6 It is a water body organic matter concentration diagram of the present application.

[0042] Reference signs:

[0043] 1, floating platform, 2, distribution box, 3, air compressor, 4, air tank, 5, hoisting winch, 6, first water tank, 7, outer cylinder, 8, first ultrasonic generator, 9-1, first pipeline winch, 9-2, second pipeline winch, 10, second ultrasonic generator, 11, second water tank, 12, solar panel, 13, fixed pulley, 14, hoisting support, 15, water outlet pipe, 16, first telescopic pipe, 17, gas conveying pipe, 18, inner cylinder, 19, adjusting cylinder, 20, float, 21, lifting rope, 22, connecting rod, 23, lifting rope fixing ring, 24-1, first microporous aerator, 24-2, second microporous aerator, 25, gas conveying pipe fixing piece, 26, electric telescopic rod, 27, detection sensor, 28, controller, 29, collar. DETAILED DESCRIPTION

[0044] The technical solutions in the present application will be described in detail below with reference to the drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B: "and / or" in the text is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist together, and B exists alone These three cases, in addition, in the description of the embodiments of the present application, "multiple" means two or more than two. The following terms "first" "second" are only for description purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" "second" can explicitly or implicitly include one or more features.

[0045] As Figure 1As shown, this invention provides an intermittent oxygenation in-situ water quality improvement and algae control device and method, including a floating platform 1, a first water tank 6, a water lifting assembly, an aeration assembly, an ultrasonic assembly, and a control assembly. The floating platform 1 floats on the water surface. The first water tank 6 is located on the upper part of the floating platform 1 and is connected to a drainage assembly. The water lifting assembly includes an outer cylinder 7 and an inner cylinder 18 vertically arranged below the floating platform 1. The lower end of the outer cylinder 7 is a closed structure. The inner cylinder 18 is located inside the outer cylinder 7 and connected to the outer cylinder 7 via a connector. The upper end of the inner cylinder 18 communicates with the first water tank 6. A flow guiding assembly is provided at the upper end of the outer cylinder 7 to guide algae blooms and water into the outer cylinder 7. The aeration assembly includes a first aeration unit and a second aeration unit. The first aeration unit is located in the outer cylinder. On the side of the outer cylinder 7 and near the lower end of the inner cylinder 18, the second aeration unit is located inside the inner cylinder 18 and near the lower end of the inner cylinder 18. The first aeration unit and the second aeration unit are connected to a compressed air supply component. The compressed air supply component is used to generate compressed air. The first aeration unit is used to oxygenate the water while using compressed air to generate bubbles to push the algae bloom and water into the outer cylinder 7. The second aeration unit is used to oxygenate the water while using compressed air to generate bubbles to push the algae bloom and water into the first water tank 6. An ultrasonic component is located on the first water tank 6. The ultrasonic component is used to destroy the air bladders of the algae bloom using ultrasonic waves. The drainage component is used to drain the destroyed algae bloom into the middle layer of the water body. The control component is electrically connected to the aeration component and the ultrasonic component respectively. The control component is used to intermittently start the aeration component and the ultrasonic component. This invention enables the intermittent activation of the aeration and ultrasonic components via a control unit. The aeration component provides intermittent oxygenation while simultaneously feeding algal blooms from the water surface into the first water tank 6 through the outer and inner cylinders. The ultrasonic component then emits ultrasonic waves to disrupt the air pockets of the algal blooms, causing them to lose buoyancy and sink to the middle layer of the water under gravity. This achieves both in-situ algae control and improved water quality through oxygenation, preventing the formation of oxygen-deficient water bodies. It simultaneously improves water quality and controls algae in situ, reducing operating costs and energy consumption while also reducing algae and improving water quality, thus enhancing the water quality improvement effect of lakes and reservoirs and ensuring the safety of water intake from these areas.

[0046] like Figure 1As shown, the lower part of the floating platform 1 is vertically provided with an electric telescopic rod 26, the upper end of the electric telescopic rod 26 is connected with the lower part of the floating platform 1, the lower end of the electric telescopic rod 26 is provided with a detection sensor 27, the detection sensor 27 is electrically connected with the control assembly, the detection sensor 27 is used for detecting the water temperature, the dissolved oxygen content in water and the chlorophyll a content in real time, and feeding back to the control assembly, the control assembly compares the preset values of the water temperature, the dissolved oxygen content in water and the chlorophyll a content, confirms that the detection sensor 27 is located in the middle layer of the water body, and controls the intensity of the aeration assembly and the frequency of the ultrasonic assembly. The detection sensor 27 includes a temperature sensor, a dissolved oxygen sensor and a chlorophyll a sensor, the temperature sensor is used for detecting the water temperature in real time, the dissolved oxygen sensor is used for detecting the dissolved oxygen content in water in real time, and the chlorophyll a sensor is used for detecting the chlorophyll a content in water in real time. The depth of the detection sensor 27 in the water is adjusted by the electric telescopic rod 26, so as to facilitate the identification of the middle layer of the water body.

[0047] As shown in Figure 1 , the first aeration unit is a first microporous aerator 24-1, and the second aeration unit is a second microporous aerator 24-2, both of which are electrically connected with the control assembly. The first microporous aerator 24-1 is used to oxygenate the water outside the outer cylinder 7 to improve the water quality and avoid the formation of anoxic water. The second microporous aerator 24-2 is used to drive the water to flow upwards while oxygenating the water.

[0048] As shown in Figure 1 , Figure 2 , the ultrasonic assembly includes a first ultrasonic generator 8, a second water tank 11 and a second ultrasonic generator 10. The first ultrasonic generator 8 is arranged on the first water tank 6 and is used to generate ultrasonic waves and act on the algae in the first water tank 6. The second water tank 11 is in communication with the first water tank 6 and is connected with the drainage assembly. The second ultrasonic generator 10 is arranged on the second water tank 11 and is used to generate ultrasonic waves and act on the algae in the second water tank 11. The ultrasonic waves emitted by the first ultrasonic generator 8 and the second ultrasonic generator 10 can destroy the algae through cavitation and disturbance, thereby improving the in-situ algae control effect. The algae rely on intracellular bubbles to adjust the floating ability, and the ultrasonic waves can collapse the structure, which is a green way to control blue-green algae without chemicals or drugs, and has little effect on other phytoplankton in the water body, and is more ecologically safe.

[0049] As shown in Figure 1 , Figure 2As shown, the drainage assembly includes a water outlet pipe 15 and a first telescopic pipe 16, the water outlet pipe 15 is arranged at the lower part of the floating platform 1, the upper end of the water outlet pipe 15 is connected with the second water tank 11, the first telescopic pipe 16 is arranged at the lower end of the water outlet pipe 15, the upper end of the first telescopic pipe 16 is connected with the water outlet pipe 15, the lower end of the first telescopic pipe 16 is connected with the lower end of the electric telescopic rod 26, through the cooperation of the first telescopic pipe 16 and the electric telescopic rod 26, the destroyed algal bloom can be directly discharged into the middle layer of the water body.

[0050] As shown in Figure 1 , Figure 2 , the flow guide assembly includes an adjusting cylinder 19 and a plurality of floats 20, the adjusting cylinder 19 is arranged at the upper end of the outer cylinder 7, the upper end of the adjusting cylinder 19 is a funnel-shaped structure, the lower end of the adjusting cylinder 19 is located in the outer cylinder 7 and is slidably connected with the inner wall of the outer cylinder 7, the plurality of floats 20 are arranged at the upper end of the adjusting cylinder 19 and are uniformly arranged along the circumference of the adjusting cylinder 19, through the plurality of floats 20, the adjusting cylinder 19 can always float on the water surface, which can effectively avoid the interference of wind and waves and improve the collection efficiency.

[0051] As shown in Figure 1 , the connecting piece is a plurality of connecting rods 22, the plurality of connecting rods 22 are uniformly arranged between the side surface of the inner cylinder 18 and the inner wall of the outer cylinder 7, and the two ends of each connecting rod 22 are respectively connected with the inner cylinder 18 and the inner wall of the outer cylinder 7.

[0052] As shown in Figure 1 , the hoisting support 14 is arranged at the position close to the inner cylinder 18 at the upper part of the floating platform 1, the fixed pulley 13 is arranged at the position directly above the inner cylinder 18 at the lower part of the hoisting support 14, the hoisting winch 5 is arranged on the floating platform 1, the hoisting winch 5 is connected with the inner cylinder 18 through the lifting rope 21, the lifting rope 21 passes through the fixed pulley 13, the inner cylinder 18 and the first water tank 6 are connected through the second telescopic pipe, and the lifting rope 21 is retracted and extended through the hoisting winch 5, so as to adjust the depth of the inner cylinder 18 and the outer cylinder 7 in the water.

[0053] As shown in Figure 1 , a plurality of lifting rope fixing rings 23 are uniformly arranged in the inner cylinder 18 along the length direction, the outer side surface of each lifting rope fixing ring 23 is fixedly connected with the inner wall of the inner cylinder 18, a horizontal rod is fixedly arranged in each lifting rope fixing ring 23, the lifting rope 21 is located in the inner cylinder 18 and passes through each horizontal rod to be located at the position of the center of the corresponding fixing ring 23, and the lifting rope 21 is fixedly connected with each horizontal rod, so as to make the adjustment of the depth of the inner cylinder 18 and the outer cylinder 7 in the water through the lifting rope 21 more stable.

[0054] As shown in Figure 1As shown in the figure, the compressed air supply assembly is connected with the first micro-porous aerator 24-1 and the second micro-porous aerator 24-2 through the air pipe 17, the first pipe winch 9-1 is arranged on the upper part of the floating platform 1, part of the air pipe 17 is wound on the first pipe winch 9-1, the air pipe 17 is reeled in and out by the first pipe winch 9-1, so as to adjust the length of the air pipe 17 in the water, so as to adapt to the adjustment of the depth of the inner cylinder 18 and the outer cylinder 7, and the air pipe 17 is fixed on the outer cylinder 7 through the air pipe fixing piece 25.

[0055] As shown in the figure, Figure 1 , Figure 2 The compressed air supply assembly includes an air compressor 3 and an air tank 4, the air compressor 3 is arranged on the upper part of the floating platform 1, the inlet of the air compressor 3 is connected with the atmosphere, the air compressor 3 is used for compressing air to obtain compressed air, the air tank 4 is connected with the outlet of the air compressor 3, the air tank 4 is used for storing compressed air, one end of the air pipe 17 is connected with the air tank 4, and the other end of the air pipe 17 is connected with the first micro-porous aerator 24-1 and the second micro-porous aerator 24-2 respectively, and the compressed air in the air tank 4 is transported into the first micro-porous aerator 24-1 and the second micro-porous aerator 24-2 through the air pipe 17.

[0056] As shown in the figure, Figure 3 The outer cylinder 7 is provided with a sleeve ring 29 near the position of the first micro-porous aerator 24-1, the sleeve ring 29 is slidably connected with the side surface of the outer cylinder 7 along the length direction of the outer cylinder 7, so as to facilitate the sliding of the sleeve ring 29 along the outer cylinder 7, the lower part of the sleeve ring 29 is connected with the first micro-porous aerator 24-1, and there is a gap between the first micro-porous aerator 24-1 and the outer cylinder 7, two second pipe winches 9-2 are arranged on the upper part of the floating platform 1 and are arranged symmetrically on both sides of the outer cylinder 7, each second pipe winch 9-2 is connected with the upper part of the sleeve ring 29 through a pull rope, the pull rope is reeled in and out by the two second pipe winches 9-2, the position of the first micro-porous aerator 24-1 relative to the outer cylinder 7 is adjusted, so as to adapt to the depth of the middle layer of the water body, thereby facilitating the oxygenation of the middle layer of the water body.

[0057] As shown in the figure, Figure 2As shown, the control assembly includes a controller 28, which is arranged on the upper portion of the floating platform 1, and is electrically connected with the air compressor 3, the electric telescopic rod 26, the detection sensor 27, the first micro-porous aerator 24-1, the second micro-porous aerator 24-2, the first ultrasonic generator 8, the second ultrasonic generator 10, the electric telescopic rod 26, the lifting winch 5, the first pipeline winch 9-1 and the second pipeline winch 9-2. Through the controller 28, the water temperature, the dissolved oxygen content and the chlorophyll a content in the water can be detected in real time according to the detection sensor 27, that is, the strength of the first micro-porous aerator 24-1 and the second micro-porous aerator 24-2, that is, the aeration frequency and the aeration amount, and the frequency of the first ultrasonic generator 8 and the second ultrasonic generator 10 can be controlled according to the actual water quality, so as to adjust the algae control strategy, further improve the water quality, improve the operation efficiency and reduce the energy consumption.

[0058] As shown in FIG., Figure 2 The upper portion of the lifting support 14 is provided with a solar panel 12, and the upper portion of the floating platform 1 is provided with a distribution box 2, which is internally provided with a storage battery. The distribution box 2 is electrically connected with the solar panel 12, and is used for storing the generated electric energy of the solar panel 12. The distribution box 2 is electrically connected with the controller 28, the air compressor 3, the electric telescopic rod 26, the detection sensor 27, the first micro-porous aerator 24-1, the second micro-porous aerator 24-2, the first ultrasonic generator 8, the second ultrasonic generator 10, the electric telescopic rod 26, the lifting winch 5, the first pipeline winch 9-1 and the second pipeline winch 9-2, and is used for supplying power to all the electric equipment.

[0059] As Figure 1 The present application also provides an intermittent oxygenation in-situ water quality improvement synchronous algae control method, which comprises the following steps:

[0060] The water temperature, the dissolved oxygen content and the chlorophyll a content in the water are detected in real time by the detection sensor 27, and are fed back to the control assembly;

[0061] The control assembly compares the received water temperature, dissolved oxygen content and chlorophyll a content with the preset values of the water temperature, dissolved oxygen content and chlorophyll a content, confirms that the detection sensor 27 is located in the middle layer of the water body, and then intermittently starts the aeration assembly and the ultrasonic assembly, and controls the strength of the aeration assembly and the frequency of the ultrasonic assembly;

[0062] The aeration assembly generates bubbles outside the outer cylinder 7 and inside the inner cylinder 18 by using compressed air. The bubbles outside the outer cylinder 7 intermittently push the algae and water into the outer cylinder 7 while intermittently oxygenating the middle layer of the water body. The algae and water flow to the bottom of the outer cylinder 7 and enter the inner cylinder 18 under the action of gravity, and the bubbles in the inner cylinder 18 push the algae and water into the first water tank 6 while oxygenating the water in the inner cylinder 18;

[0063] The ultrasonic assembly synchronously generates ultrasonic waves to act on the algae bloom, uses ultrasonic cavitation and disturbance to destroy the air sacs of the algae bloom, so that the algae bloom loses buoyancy, and finally uses the drainage assembly to drain the algae bloom and water to the middle layer of the water body, and the algae bloom sinks to the bottom of the lake after losing buoyancy.

[0064] In the process of detecting the water temperature, the dissolved oxygen content and the chlorophyll a content in real time by using the detection sensor 27, the floating platform 1 is first driven to move on the surface of the lake, and after it is confirmed that the detection sensor 27 is located in the middle layer of the water body, the movement of the floating platform 1 is stopped.

[0065] Example 1

[0066] As shown in Figure 4 , Figure 5 , Figure 6 , for the algae bloom that has settled in the middle layer of the water body, a control group and an intermittent oxygenation group are set. The intermittent oxygenation group is oxygenated once every eight days, and the dissolved oxygen concentration of the water body is controlled at 8.0 mg / L each time. During the reaction, the dissolved oxygen concentrations of the control group and the intermittent oxygenation group are maintained at <0.5 mg / L and >0.5 mg / L, respectively. The intact algal cells of the control group decrease to the minimum value at about 16 days of reaction, while the intact algal cells of the intermittent oxygenation group are 52.6% at about 16 days of reaction. The organic matter concentration of the control group is maintained at 5.5 mg / L-6.5 mg / L during 20-32 days of reaction, while the organic carbon concentration of the intermittent oxygenation group is maintained at 2.0 mg / L-4.0 mg / L. The results show that the method of intermittent oxygenation of the present application can significantly improve the algae bloom control effect and improve the water quality of the water body.

[0067] Example 2

[0068] As shown in Figure 4 , Figure 5 , Figure 6 , for the algae bloom that has settled in the middle layer of the water body, different oxygenation frequencies are set to control the dissolved oxygen of the system: oxygenation once every eight days (group A), oxygenation once every four days (group B), oxygenation once every two days (group C), and oxygenation once a day (group D). During the reaction, the dissolved oxygen concentrations of the water bodies corresponding to groups A, B, C and D can be controlled at >0.5 mg / L, >0.5 mg / L, >2.0 mg / L and >4.0 mg / L, respectively. The intact algal cells of groups A, B, C and D are 11.2%, 18.5%, 41.4% and 75.3% at 8 days of reaction, respectively. The organic matter concentrations of groups A, B, C and D can all be controlled at 2.0 mg / L-4.0 mg / L, and maintaining a high dissolved oxygen can significantly improve the dissolved oxygen of the water body, significantly control the algae bloom of the water body, and improve the water quality of the water body.

[0069] Example 3

[0070] A pilot experiment was carried out in a typical mountain valley reservoir with thermal stratification (maximum water depth 18 m) to verify the effect of the device on algae control and oxygenation in stratified water. The experimental device was set to control algae depth in the middle layer of the water body at 6-7 m, and the first ultrasonic generator 8 and the second ultrasonic generator 10 were used to break the cysts together, with intermittent oxygenation every 12 hours for 90 minutes, and continuous operation for 30 days. The results show that the dissolved oxygen concentration in the middle layer of the water body increases from 0.4 mg / L to 2.5 mg / L, the concentration of chlorophyll a decreases by 72%, and the organic carbon decreases from 6.3 mg / L to 3.1 mg / L. Compared with the control group, the dissolved oxygen in the experimental group is significantly improved, the density of algae and the concentration of organic pollutants are significantly reduced, which verifies the adaptability and practicality of the device in efficiently controlling algae and improving water quality in the middle-deep layer of the water body.

[0071] The intermittent oxygenation in-situ water quality improvement synchronous algae control device and method of the present application has other advantages as follows:

[0072] Firstly, the present application can force the surface algae into the middle layer of the water body during the algae outbreak process, and then create oxygenation conditions to achieve the purpose of simultaneously reducing algae and improving water quality, thereby improving the effect of improving the water quality of the lake and reservoir.

[0073] Secondly, the present application can adjust the depth of the first micro-porous aerator by positioning the middle layer of the water body, and directly aerate through the external first micro-porous aerator to achieve the purpose of reducing algae and improving the water quality in the middle layer of the water body.

[0074] Thirdly, the present application can create anoxic-aerobic alternating environment in the middle layer of the water body through intermittent oxygenation, thereby effectively controlling algae cells and organic matter.

[0075] Fourthly, the present application can prevent the release of anaerobic reducing substances (such as NH4 + , Fe 2+ , Mn 2+ ) while promoting the oxidative degradation of organic matter released after the death of algae, thereby further ensuring the safety of lake and reservoir water.

[0076] Fifthly, the present application realizes the automatic adjustment closed-loop mechanism of monitoring-decision-response through the cooperation of the detection sensor, control component, aeration component and ultrasonic component, so as to adaptively adjust the algae control strategy according to the actual water quality change, thereby further improving the operation efficiency and reducing the energy consumption.

[0077] Sixthly, compared with the traditional algae control technology, the present application has stronger adaptability, safety and continuous operation ability, and is especially suitable for high-sensitive water body environments such as drinking water source reservoirs and urban landscape lakes.

[0078] It is to be understood that the present application is described by way of example only, and that modifications or alterations can be made to the features and embodiments described without departing from the spirit and scope of the application. In addition, modifications can be made to the features and embodiments described to accommodate specific situations and materials without departing from the spirit and scope of the application. Accordingly, the application is not limited to the specific embodiments disclosed herein, but rather, the scope of the application includes all embodiments falling within the scope of the claims.

Claims

1. An intermittent oxygenation in-situ water quality improvement synchronous algal control device, characterized in that, The utility model relates to a floating platform (1) is provided with a first water tank (6) on the upper portion, and the first water tank (6) is connected with a drainage assembly. The water lifting assembly comprises an outer cylinder (7) and an inner cylinder (18) vertically arranged below the floating platform (1), the lower end of the outer cylinder (7) is a closed structure, the inner cylinder (18) is arranged in the outer cylinder (7) and connected with the outer cylinder (7) through a connecting piece, the upper end of the inner cylinder (18) is communicated with the first water tank (6), and the upper end of the outer cylinder (7) is provided with a flow guide assembly for guiding the algal blooms and water into the outer cylinder (7). The aeration assembly comprises a first aeration unit and a second aeration unit, the first aeration unit is arranged on the side of the outer cylinder (7) and close to the lower end of the outer cylinder (7), the second aeration unit is arranged in the inner cylinder (18) and close to the lower end of the inner cylinder (18), the first aeration unit and the second aeration unit are connected with a compressed air supply assembly, the compressed air supply assembly is used for preparing compressed air, the first aeration unit is used for oxygenating the water while generating air bubbles by using the compressed air to push the algal blooms and water into the outer cylinder (7), and the second aeration unit is used for oxygenating the water while generating air bubbles by using the compressed air to push the algal blooms and water into the first water tank (6). The ultrasonic assembly is arranged on the first water tank (6) and is used for destroying the gas sac of the algal blooms by using ultrasonic waves. The control assembly is electrically connected with the aeration assembly and the ultrasonic assembly respectively and is used for intermittently starting the aeration assembly and the ultrasonic assembly. The flow guide assembly comprises: An adjusting cylinder (19) is arranged at the upper end of the outer cylinder (7), the upper end of the adjusting cylinder (19) is a funnel-shaped structure, the lower end of the adjusting cylinder (19) is located in the outer cylinder (7) and is slidably connected with the inner portion of the outer cylinder (7); A plurality of floats (20) are arranged at the upper end of the adjusting cylinder (19) and are uniformly arranged along the circumference of the adjusting cylinder (19). The first aeration unit is a first microporous aerator (24-1), the second aeration unit is a second microporous aerator (24-2), and the first microporous aerator (24-1) and the second microporous aerator (24-2) are electrically connected with the control assembly.

2. The intermittent oxygenation in-situ water quality improvement synchronous algae control device according to claim 1, characterized in that, The ultrasonic assembly comprises:

3. The apparatus according to claim 1, wherein the apparatus is characterized by: A first ultrasonic generator (8) is arranged on the first water tank (6) and is used for acting ultrasonic waves on the algal blooms in the first water tank (6); A second water tank (11) is communicated with the first water tank (6), and the second water tank (11) is connected with the drainage assembly; A second ultrasonic generator (10) is arranged on the second water tank (11) and is used for acting ultrasonic waves on the algal blooms in the second water tank (11). ​ 4. The apparatus according to claim 1, wherein the apparatus is characterized by: The lower part of the floating platform (1) is vertically provided with an electric telescopic rod (26), the upper end of the electric telescopic rod (26) is connected with the lower part of the floating platform (1), the lower end of the electric telescopic rod (26) is provided with a detection sensor (27), the detection sensor (27) is electrically connected with a control assembly, the detection sensor (27) is used for detecting water temperature, dissolved oxygen content and chlorophyll a content in water in real time and feeding back the same to the control assembly, the control assembly compares the same with preset values of water temperature, dissolved oxygen content and chlorophyll a content in water, confirms that the detection sensor (27) is located in the middle layer of water, and controls the strength of the aeration assembly and the frequency of the ultrasonic assembly.

5. The intermittent oxygenation in-situ water quality improvement synchronous algal control device according to claim 4, characterized in that, The drainage assembly comprises: A water outlet pipe (15) is arranged at the lower part of the floating platform (1), and the upper end of the water outlet pipe (15) is connected with the second water tank (11); A first telescopic pipe (16) is arranged at the lower end of the water outlet pipe (15), the upper end of the first telescopic pipe (16) is connected with the water outlet pipe (15), and the lower end of the first telescopic pipe (16) is connected with the lower end of the electric telescopic rod (26).

6. The intermittent oxygenation in-situ water quality improvement and algal control device according to claim 2, characterized in that, A lifting support (14) is arranged at the upper part of the floating platform (1) and close to the inner cylinder (18), a fixed pulley (13) is arranged at the lower part of the lifting support (14) and directly above the inner cylinder (18), a lifting winch (5) is arranged on the floating platform (1), the inner cylinder (18) and the first water tank (6) are connected through a second telescopic pipe.

7. The apparatus according to claim 6, wherein the apparatus is characterized by: The compressed air supply assembly is connected with the first micro-porous aerator (24-1) and the second micro-porous aerator (24-2) through a gas conveying pipe (17), and a first pipe winch (9-1) is arranged at the upper part of the floating platform (1), and part of the gas conveying pipe (17) is wound on the first pipe winch (9-1).

8. The apparatus according to claim 6, wherein the apparatus is characterized by: A sleeve ring (29) is arranged at the side of the outer cylinder (7) and close to the first micro-porous aerator (24-1), the sleeve ring (29) is slidably connected with the side of the outer cylinder (7) along the length direction of the outer cylinder (7), the lower part of the sleeve ring (29) is connected with the first micro-porous aerator (24-1), two second pipe winches (9-2) are arranged at the upper part of the floating platform (1) and symmetrically at the positions on both sides of the outer cylinder (7), and each second pipe winch (9-2) is connected with the upper part of the sleeve ring (29) through a pull rope.

9. An intermittent oxygenation in-situ water quality improvement simultaneous algal control method, characterized by, The method of claim 4 comprises the following steps: The detection sensor (27) is used for detecting water temperature, dissolved oxygen content and chlorophyll a content in water in real time and feeding back the same to the control assembly; After confirming that the detection sensor (27) is located in the middle layer of water, the control assembly compares the received water temperature, dissolved oxygen content and chlorophyll a content with preset values of water temperature, dissolved oxygen content and chlorophyll a content, intermittently starts the aeration assembly and the ultrasonic assembly, and controls the strength of the aeration assembly and the frequency of the ultrasonic assembly; The aeration assembly utilizes compressed air to generate bubbles outside the outer cylinder (7) and inside the inner cylinder (18), the bubbles outside the outer cylinder (7) intermittently push the algae and water into the outer cylinder (7) while intermittently oxygenating the middle layer of the water body, the algae and water flow to the bottom of the outer cylinder (7) and enter the inner cylinder (18) under the action of gravity, and the bubbles in the inner cylinder (18) oxygenate the water inside while pushing the algae and water into the first water tank (6); The ultrasonic assembly synchronously generates ultrasonic waves acting on the algae, utilizes ultrasonic cavitation and disturbance to destroy the air sacs of the algae, so that the algae lose buoyancy, and finally utilizes the drainage assembly to drain the algae and water to the middle layer of the water body.

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