An unmanned ecological live water algae control method and equipment

Abstract

The present invention discloses an unmanned ecological active water bath control method and equipment, comprising the following steps: step one, liquid absorption: extending the water absorption pipe to the bottom of the riverbed, and the high-pressure pump sucks the muddy and water mixed sewage liquid into the reaction chamber; step two, oxidation disinfection treatment: turning on the micro-nano bubble generator and the high-pressure ionization gasification generator, pre-treating the muddy and water mixed sewage liquid to form a gas-liquid mixed liquid; step three, liquid spraying: pumping the gas-liquid mixed liquid to the bottom of the riverbed to form a muddy and water mixed liquid; step four, secondary liquid absorption and stirring: pumping the muddy and water mixed liquid and part of the nano bubbles at the bottom of the water area again, and transporting them to the high-pressure agitator for stirring to obtain a uniform mixed liquid; step five, spraying aeration: spraying the uniform mixed liquid on the water surface. The present invention has the following advantages and effects: it has the effects of safety and environmental protection, effective bath control, and improving the self-healing ability of water bodies.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental governance, and in particular to an unmanned ecological live water algae control method and equipment thereof. Background Art

[0002] With the rapid development of social economy, reservoir water has been polluted due to various reasons, resulting in a large amount of nutrient enrichment in the reservoir water, especially organic pollution, which leads to excessive total nitrogen and total phosphorus, causing eutrophication of the water. Such eutrophic water provides material conditions for algae proliferation, especially from April to October each year, when algae grow extremely vigorously, disrupting the normal management order of the reservoir. Therefore, preventing and controlling algae and ensuring water safety are the top priorities of reservoir management and are also the basic and effective guarantee for promoting social stability and development.

[0003] The protection and management of water environment needs to start from two aspects: pollution source control and water body management. At present, point source pollution in various parts of my country has generally been well controlled. Not only have a large number of polluting enterprises been shut down, converted or upgraded, and only those that meet the emission standards are allowed to produce, but even some breeding facilities have been demolished and production is prohibited. Point source pollution control has basically been successful. However, there are no very effective means to eradicate the various types of diffusely distributed non-point source pollution, especially the various agricultural non-point source pollution that accounts for a high proportion, both at home and abroad. Although comprehensive management measures such as changing the planting and breeding model, strengthening forest belts and wetland construction can reduce the impact of non-point source pollution to a certain extent, it is almost impossible to achieve comprehensive control of non-point source pollution. This means that the main impact of this non-point source pollution will be faced by my country's water environment in the future.

[0004] In the prior art, chemical methods are usually used for treatment. During the chemical treatment process, various chemical substances need to be added to the water body, which will cause chemical secondary pollution. It is not suitable for use in drinking water sources. Moreover, chemical methods often only treat the symptoms and not the root cause, so there is a problem of poor sustainability. Summary of the invention

[0005] The purpose of the present invention is to provide an unmanned ecological live water algae control method, which is safe, environmentally friendly and can effectively improve the self-healing ability of water bodies. Another purpose of the present invention is to provide an unmanned ecological live water algae control device, which is safe, environmentally friendly and can effectively control algae.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an unmanned ecological live water algae control method, comprising the following steps:

[0007] Step 1, liquid suction: extend the water suction pipe to the bottom of the riverbed, and use a high-pressure pump to suck the muddy and water mixed sewage liquid at the bottom of the river from the water suction pipe into the reaction chamber;

[0008] Step 2, oxidation disinfection treatment: Turn on the micro-nano bubble generator and the high-pressure ionization gasification generator to perform micro-bubble and high-pressure pretreatment on the muddy and water mixed sewage liquid in step 1 to prepare a gas-liquid mixed liquid with nano bubbles;

[0009] Step 3, liquid spraying: the gas-liquid mixture in step 2 is pumped to the bottom of the riverbed through a high-pressure pump through a spray pipe, and the gas-liquid mixture with nanobubbles is mixed with the silt at the bottom of the riverbed to form a mud-water mixture;

[0010] Step 4, secondary liquid suction and stirring: The muddy water mixture and part of the nanobubbles at the bottom of the water area are pumped up again by a high-pressure pump and a water suction pipe, and transported to a high-pressure stirrer for stirring to obtain a uniform mixed liquid;

[0011] Step 5, spraying aeration: spraying the uniform mixed solution prepared in step 4 on the water surface;

[0012] Repeat steps 1 to 5 several times.

[0013] By adopting the above technical solution, in step 2, in the reaction chamber, the micro-nano bubble generator generates a large number of micro-nano bubbles in the mud-water mixed sewage, which can increase the turbidity retention time of the sludge in the sewage, and the air is treated by high-voltage ionization to generate a considerable amount of negative ions, which are charged into the mud-water mixed sewage, and the turbid sludge is oxidized and disinfected to reduce the harm of harmful substances to water bodies and aquatic organisms, so that the sludge can be oxygenated and oxidized and disinfected pre-treated; in step 3, during the liquid spraying process, the bottom of the riverbed can be stirred to release harmful substances such as methane and sulfide stored in the sludge; in step 5, after the uniform mixed liquid is sprayed on the water surface, due to the large surface tension of the sludge, when the uniform mixture with sludge is sprayed When it reaches the water surface, it is dispersed into extremely small particles, which increases the contact area between the silt particles and the water body and has a flocculation effect. In the sedimentation process, it can wrap the algae and also have a flocculation effect on the suspended particles in the water body (particulate phosphorus, particulate nitrogen, organic matter, heavy metal chelates, etc.). When the uniform mixed liquid is sprayed on the water surface, it can reduce the transparency of the water body in a short period of time and inhibit the photosynthesis intensity of the algae. In addition, after the uniform mixed liquid is sprayed, aerated and stirred, the dissolved oxygen in the water is directly increased, which is beneficial to the oxidation of Fe2+ to Fe3+. Fe3+ combines with phosphate to form insoluble iron phosphate. Under neutral or alkaline conditions of Fe3+, the generated iron hydroxide colloid will also adsorb the free phosphorus in the overlying water and reduce the main nutrients in the water body. In this way, physical treatment is carried out without affecting the water quality. No chemical drugs are used in the treatment process. It is safe and reliable, and in-situ remediation treatment is achieved. The water quality can be significantly improved in a short period of time, including the control of algae biomass and chlorophyll a content in the treated water area and the adjustment of water pH and nutrient content. This program can achieve the purpose of curbing the recurrence of blue-green algae blooms and enhance the self-healing ability of the water body.

[0014] The present invention is further configured as follows: in step 2, the high voltage ionization generator is set to 50,000-100,000 volts of high voltage electricity for high voltage ionization treatment.

[0015] The present invention is further configured as follows: in step 4, taking an appropriate amount of the uniform mixed liquid into a detector for data detection, and detecting the chlorophyll content, water transparency, heavy metal content and pH value respectively.

[0016] The present invention is further configured as follows: in step five, before the uniform mixed liquid is sprayed on the water surface, the uniform mixed liquid is first subjected to ultrasonic vibration treatment by an ultrasonic generator.

[0017] By adopting the above technical solution, after the ultrasonic generator acts on the uniform mixed liquid, on the one hand, it can reduce the sludge particles, and on the other hand, it can increase the duration of the uniform distribution of the sludge particles in the water, so that when the uniform mixed liquid is sprayed on the water surface, the sludge microparticles are distributed more evenly.

[0018] Another technical purpose of the present invention is achieved through the following technical scheme: an unmanned ecological live water algae control equipment, including a hull, on which a high-pressure pump, a reaction chamber and a high-pressure agitator are arranged, the water inlet of the high-pressure pump is connected to a water suction pipe, the water outlet of the high-pressure pump is connected to a spray pipe, the high-pressure pump is respectively connected to the reaction chamber and the high-pressure agitator, and a micro-nano bubble generator and a high-pressure ionization gasification generator are arranged in the reaction chamber.

[0019] By adopting the above technical solution, during the treatment process, the hull slowly sails on the water surface. Deep-water lakes and reservoirs often form thermoclines in summer, and the upper and lower water bodies cannot convect. The movement of the hull and the water absorption and spraying process can transport the lower water with lower temperature to the surface, which accelerates the convection of the upper and lower water layers and transports nutrients to the lower water body. Some of them are absorbed and utilized by algae, and the other part is settled. At the same time, it makes up for the high oxygen content in the lower water body, which has the effect of effectively preventing and controlling algal blooms, emergency treatment and rapid restoration of the ecological environment. In addition, during the operation of the hull, the turbidity of the water surface changes, which can inhibit the photosynthesis of algae to a certain extent.

[0020] The present invention is further configured as follows: a detection box is arranged on the hull, and a plurality of detection instruments are arranged in the detection box.

[0021] By adopting the above technical solution, the detection instrument can monitor the algae content, water transparency, heavy metal content, pH value, etc. in the water in real time, provide timely feedback, and is easy to operate.

[0022] The present invention is further configured as follows: the detection instrument includes a field algae analyzer, a transparency detector, a heavy metal detector and a pH meter.

[0023] By adopting the above technical solutions, the field algae analyzer can measure and identify the chlorophyll a content and phytoplankton in the water body, the transparency detector can detect the transparency of the water quality, the heavy metal detector is used to detect the heavy metal content in the water body, and the pH meter is used to detect the pH value of the water body in real time.

[0024] The present invention is further configured as follows: an ultrasonic generator is also provided in the reaction chamber.

[0025] The present invention is further configured as follows: the spray pipe is arranged in the water suction pipe, a water suction cavity is formed between the inner wall of the water suction pipe and the outer wall of the spray pipe, a water connection joint is arranged at the end of the water suction pipe away from the hull, a plurality of strip through holes are opened on the side wall of the water connection joint, the strip through holes are connected with the water suction cavity, and the outlet of the spray pipe is located in the water connection joint.

[0026] By adopting the above technical solution, the water connection joint is inserted into the silt at the bottom of the riverbed. Under the driving action of the high-pressure pump, the muddy and water mixed sewage liquid at the bottom of the riverbed is sucked into the water suction chamber through the strip through holes, and the silt in all directions can be sucked into the water suction pipe from the strip through holes on the corresponding surface; when the gas-liquid mixture is pumped to the bottom of the riverbed, the gas-liquid mixture can be sprayed to the surroundings from the strip through holes, and the spraying range is wide.

[0027] The present invention is further configured as follows: a stirring blade is arranged in the water connection joint, and the stirring blade is located at the water outlet of the spray pipe.

[0028] By adopting the above technical solution, during the spraying process, the stirring blade can be driven to rotate by the impact force of the spraying.

[0029] In summary, the present invention has the following beneficial effects:

[0030] 1. The micro-nano bubble generator and high-voltage ionization gasification generator can be used to oxidize and disinfect the muddy and water mixed sewage liquid. Negative ions are added to the muddy and water mixed sewage liquid to oxidize and disinfect the turbid sludge to reduce the harm of harmful substances to water bodies and aquatic organisms. No chemical drugs are used in the treatment process. It is safe and reliable, and in-situ repair treatment is achieved. It can significantly improve water quality in a short time, including the control of algae biomass and chlorophyll a content in the treated water area and the adjustment of water pH and nutrient content. This solution can achieve the purpose of curbing the recurrence of blue algae blooms and improve the self-healing ability of water bodies;

[0031] 2. During the spraying process, it can stir the bottom of the riverbed and release harmful substances stored in the silt, such as methane and sulfide;

[0032] 3. After the uniform mixed liquid is sprayed on the water surface, due to the large surface tension of the silt, when the uniform mixture with silt is sprayed on the water surface, it is dispersed into extremely small particles, which increases the contact area between the silt particles and the water body and plays a flocculation effect. In the sedimentation process, the algae can be wrapped, and at the same time, the suspended particles in the water body (particulate phosphorus, particulate nitrogen, organic matter, heavy metal chelates, etc.) are also flocculated. When the uniform mixed liquid is sprayed on the water surface, the transparency of the water body can be reduced in a short period of time, and the photosynthesis intensity of the algae can be inhibited; in addition, after the uniform mixed liquid is sprayed, aerated, and stirred, the dissolved oxygen in the water is directly increased, which is conducive to the oxidation of Fe2+ to Fe3+, and Fe3+ combines with phosphate to form insoluble iron phosphate. Under neutral or alkaline conditions of Fe3+, the generated iron hydroxide colloid will also adsorb free phosphorus in the overlying water, reducing the main nutrients in the water body;

[0033] 4. During the treatment process, the ship sails slowly on the water surface, which accelerates the convection of the upper and lower water layers, and has the effect of effectively preventing and controlling algal blooms, emergency treatment and rapid restoration of the ecological environment. In addition, during the operation of the ship, the turbidity of the water surface changes, which can inhibit the photosynthesis of algae to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structural relationship of the embodiment.

[0035] Figure 2 It is a schematic diagram of the internal structural relationship of the embodiment.

[0036] Figure 3 It is a cross-sectional view of the internal structure of the water suction pipe and the water connection joint of the embodiment.

[0037] Figure 4 It is a trend diagram of the pH value of the reservoir in the embodiment changing with time.

[0038] Figure 5 Graph showing the trend of chlorophyll in the reservoir over time in the embodiment.

[0039] Figure 6 3 is a trend diagram of the transparency of the reservoir changing with time in the embodiment.

[0040] In the figure: 1. hull; 11. charging interface; 12. battery compartment; 13. control box; 14. lithium battery module; 15. rubber friction block; 151. guide ramp; 16. thruster; 2. charging dock; 21. automatic charging pile; 22. fixed seat; 23. fixed rod; 24. fixed wheel; 3. high-pressure pump; 4. high-pressure agitator; 41. stirring kettle; 42. stirring motor; 5. water suction pipe; 51. water suction chamber; 6. reaction chamber; 61. micro-nano bubble generator; 62. high-voltage ionization gasification generator; 63. ultrasonic generator; 7. spray pipe; 8. water joint; 81. conical guide surface; 82. strip through hole; 83. stirring blade; 9. detection box. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] An unmanned ecological live water control bathing method and equipment, such as Figure 1-2The algae control device is shown, including a hull 1, a charging dock 2 adapted to the hull 1, an automatic charging pile 21 is arranged on the charging dock 2, a charging interface 11 is arranged at the front end of the hull 1, and the charging interface 11 is electrically connected to the automatic charging pile 21 after plugging and matching, a battery compartment 12 and a control box 13 are arranged on the hull 1, and the control box 13 is connected to the charging interface 11, and a lithium battery module 14 electrically connected to the control box 13 is arranged in the battery compartment 12. The charging dock 2 is provided with fixed seats 22 on both sides, and fixed rods 23 are arranged on the fixed seats 22, and fixed wheels 24 are coaxially arranged on the fixed rods 23. A rubber friction block 15 that is positioned and matched with the fixed wheel 24 is arranged on the hull 1, and a guide inclined surface 151 that is guided and matched with the fixed wheel 24 is arranged on the rubber friction block 15. When the equipment on the hull 1 is insufficiently powered, the hull 1 can move to the charging dock 2. After the charging interface 11 is connected to the automatic charging pile 21, the lithium battery module 14 can be charged without real-time supervision, which is more convenient to use. When the hull 1 is moored at the charging dock 2, the fixed wheel 24 moves along the guide slope 151 to the rubber friction block 15, and the hull 1 can be limited, so that the hull 1 stops in time.

[0043] like Figure 2 As shown, the hull 1 is also provided with a high-pressure pump 3, a reaction chamber 6 and a high-pressure stirrer 4. The high-pressure stirrer 4 includes a stirring kettle 41, a stirring motor 42 arranged on the stirring kettle 41, and a stirring blade assembly connected to the output shaft of the stirring motor 42. The water inlet of the high-pressure pump 3 is connected with a water suction pipe 5, and the water suction pipe 5 is arranged obliquely at the rear of the hull 1 as a whole. A propeller 16 is also arranged at the rear of the hull 1. The high-pressure pump 3 is connected to the reaction chamber 6 and the high-pressure stirrer 4 through connecting pipes. A micro-nano bubble generator 61, a high-pressure ionization gasification generator 62 and an ultrasonic generator 63 are arranged in the reaction chamber 6.

[0044] like Figure 2 and Figure 3As shown, the water outlet of the high-pressure pump 3 is connected to a spray pipe 7, which is arranged in the water suction pipe 5. In other embodiments, the spray pipe 7 and the water suction pipe 5 can also be separately arranged, and a water suction chamber 51 is formed between the inner wall of the water suction pipe 5 and the outer wall of the spray pipe 7. The end of the water suction pipe 5 away from the hull 1 is provided with a water connection joint 8, which is arranged horizontally relative to the water suction pipe 5. The front end of the water connection joint 8 is provided with a conical guide surface 81, and the side wall of the water connection joint 8 is provided with a plurality of strip through holes 82, which are connected to the water suction chamber 51, and the outlet of the spray pipe 7 is located in the water connection joint 8, and the water connection joint 8 is provided with a stirring blade 83, which is located at the water outlet of the spray pipe 7. The hull 1 is also provided with a spray pipe connected to the reaction chamber 6, and a control valve assembly is provided in the spray pipe. The height of the water outlet of the spray pipe is higher than the height of the water connection joint 8. During the treatment process, the water connection 8 is inserted into the silt at the bottom of the riverbed. Under the driving action of the high-pressure pump 3, the muddy and water mixed sewage at the bottom of the riverbed is sucked into the water suction chamber 51 through the strip through hole 82, and the silt in all directions can be sucked into the water suction pipe 5 from the strip through holes 82 on the corresponding surface; when the gas-liquid mixture is pumped into the bottom of the riverbed, the gas-liquid mixture can be sprayed from each strip through hole 82 to the surroundings, and the spraying range is relatively wide. During the spraying process, the stirring blade 83 can be driven to rotate by the impact force of the spraying, and a better stirring effect is achieved. The water suction pipe 5 is set at an angle, which can reduce resistance to a certain extent compared to the vertical setting. When the water connection 8 is extended into the silt, the conical guide surface 81 can play a better loosening effect on the silt during the movement of the hull 1.

[0045] like Figure 2 As shown, a detection box 9 is provided on the hull 1, and a number of detection instruments are provided in the detection box 9, including a field algae analyzer, a transparency detector, a heavy metal detector and a pH meter. The detection instruments can monitor the algae content, water transparency, heavy metal content, pH value, etc. in the water body in real time, provide timely feedback, and are easy to operate. The field algae analyzer can measure and identify the chlorophyll a content and phytoplankton in the water body, the transparency detector detects the transparency of the water quality, the heavy metal detector is used to detect the heavy metal content in the water body, and the pH meter is used to detect the pH value of the water body in real time.

[0046] The algae control method using the above-mentioned equipment includes the following steps:

[0047] Step 1, liquid suction: extend the water suction pipe 5 to the bottom of the riverbed, and use the high-pressure pump 3 to suck the muddy and water mixed sewage liquid at the bottom of the river from the water suction pipe 5 into the reaction chamber 6;

[0048] Step 2, oxidation disinfection treatment: turn on the micro-nano bubble generator 61 and the high-voltage ionization gasification generator 62, subject the muddy and water mixed sewage liquid in step 1 to micro-bubble and high-pressure pretreatment to prepare a gas-liquid mixed liquid with nano-bubbles, and set the high-voltage ionization generator to 50,000-100,000 volts of high voltage electricity for high-voltage ionization treatment;

[0049] Step 3, liquid spraying: the gas-liquid mixture in step 2 is pumped to the bottom of the riverbed through the high-pressure pump 3 and the spray pipe 7, and the gas-liquid mixture with nanobubbles is mixed with the silt at the bottom of the riverbed to form a mud-water mixture;

[0050] Step 4, secondary liquid suction and stirring: The muddy water mixture and part of the nanobubbles at the bottom of the water area are pumped up again by the high-pressure pump 3 and the water suction pipe 5, and transported to the high-pressure stirrer 4 for stirring treatment to obtain a uniform mixed liquid, and a proper amount of the uniform mixed liquid is taken to the detector for data detection, and the chlorophyll content, water transparency, heavy metal content and pH value are respectively detected;

[0051] Step 5, spraying aeration: the uniform mixed liquid prepared in step 4 is subjected to ultrasonic vibration treatment by an ultrasonic generator 63, and then the control valve assembly of the spraying pipeline is opened to spray the uniform mixed liquid on the water surface. After the ultrasonic generator 63 acts on the uniform mixed liquid, on the one hand, it can reduce the sludge particles, and on the other hand, it can increase the duration of uniform distribution of the sludge particles in the water, so that when the uniform mixed liquid is sprayed on the water surface, the sludge microparticles are distributed more evenly.

[0052] Repeat steps 1 to 5 several times.

[0053] The basic working principle of the present invention is: adopting in-situ treatment, focusing on ecological restoration, not adding any algae control agents or biological fungi, and using efficient, environmentally friendly, advanced pure physical machinery and new electronic technology.

[0054] In step 2, in the reaction chamber 6, the micro-nano bubble generator 61 generates a large number of micro-nano bubbles in the muddy and water mixed sewage, which can increase the turbidity retention time of the sewage. After the air is treated with high-voltage ionization, a considerable amount of negative ions are generated, and the negative ions are charged into the muddy and water mixed sewage, and the turbid sludge is oxidized and disinfected to reduce the harm of harmful substances to water bodies and aquatic organisms. In this way, the sludge can be oxygenated and oxidized and disinfected pre-treated; in step 3, during the liquid spraying process, the bottom of the riverbed can be stirred to release harmful substances such as methane and sulfide stored in the sludge; in step 5, after the uniform mixed liquid is sprayed on the water surface, due to the large surface tension of the sludge, when the uniform mixture with the sludge is sprayed on the water surface, it is separated It is dispersed into extremely small particles, which increases the contact area between the silt particles and the water body and has a flocculation effect. In the sedimentation process, it can wrap the algae and also have a flocculation effect on the suspended particles in the water body (particulate phosphorus, particulate nitrogen, organic matter, heavy metal chelates, etc.). When the uniform mixed liquid is sprayed on the water surface, it can reduce the transparency of the water body in a short period of time and inhibit the photosynthesis intensity of the algae. In addition, after the uniform mixed liquid is sprayed, aerated and stirred, the dissolved oxygen in the water is directly increased, which is beneficial to the oxidation of Fe2+ to Fe3+. Fe3+ combines with phosphate to form insoluble iron phosphate. Under neutral or alkaline conditions of Fe3+, the generated iron hydroxide colloid will also adsorb the free phosphorus in the overlying water and reduce the main nutrients in the water body. In this way, physical treatment is carried out without affecting the water quality. No chemical drugs are used in the treatment process. It is safe and reliable, and in-situ remediation treatment is achieved. The water quality can be significantly improved in a short period of time, including the control of algae biomass and chlorophyll a content in the treated water area and the adjustment of water pH and nutrient content. This program can achieve the purpose of curbing the recurrence of blue-green algae blooms and enhance the self-healing ability of the water body.

[0055] Results and analysis:

[0056] like Figure 4 The figure shows the trend of the pH value of the reservoir water layer over time. The pH values ​​of the surface, middle and bottom layers are tested in each time period. The overall pH value of the reservoir does not change significantly during the operation. The pH value of the surface water shows a slight downward trend due to the reduction of algae, and the water body is basically alkaline. In terms of time, the pH value change trends of the middle and bottom layers are basically the same, without obvious fluctuations.

[0057] like Figure 5As shown in the figure, it is a trend chart of the chlorophyll content of the water in the reservoir changing with time. The chlorophyll concentration of four fixed points in the reservoir was tested in each time period. In general, the change trend of the four sample points is the same, generally showing a downward trend. It suddenly increased around May 18 and began to decline on the 26th. The highest chlorophyll values ​​of the four points were all on April 16, which were 140.15μg / L, 55.43μg / L, 56.53μg / L, and 87.93μg / L respectively. The lowest values ​​appeared on July 17, 10.78μg / L, 11.55μg / L, 15.2μg / L, and 14.49μg / L. This shows that the algae control equipment has obvious algae control effect and is sustainable.

[0058] By integrating the data, we can deduce the reasons for the sudden increase in chlorophyll concentration on May 18: (1) The continuous rainfall from May 12 to 16 increased the flow from upstream, carrying a large amount of nutrients, and the nitrogen concentration suddenly increased. In addition, the opening of the sluice gate accelerated the migration of algae; (2) The precipitation destroyed the growth environment of algae, and the transparency dropped to the lowest around the 18th, indicating that the mixing of water bodies caused the growth environment of the original algae to change. (3) After the rainfall ended, sufficient sunlight, temperature, total nitrogen and other conditions restored the growth environment of algae after the 18th, and the algae grew and reproduced rapidly, resulting in a rebound in the concentration of chlorophyll a in the surface layer. The rainfall had a phased inhibitory effect on the outbreak of algal blooms, but it did not last long.

[0059] like Figure 6 As shown, this is a trend chart of the transparency of water in the reservoir changing with time. Transparency tests are carried out at four fixed points in the reservoir in each time period. The transparency of the water at the four points shows a downward trend, indicating that the algae control equipment has an obvious algae control effect and good sustainability.

[0060] As shown in Table 1, the data table shows the average and standard deviation of the five heavy metals in the water samples of the four water points S1, S2, S3, and S4 of the reservoir, and their comparison with the US National Recommended Water Quality Standard for Priority Pollutants (USEPA 2009) and my country's Surface Water Environmental Quality Standard (GB3838-2002). Through the parallel comparative analysis of the dissolved heavy metal levels in the water bodies of the four points, it was found that the heavy metals Cr and Cd were relatively low at each point, and the heavy metal Mn had a maximum value at the bottom of each point, but did not exceed the surface water Class I quality standard. The contents of the five heavy metals (Cu, Pb, Cr, Cd, and Mn) in the reservoir were all lower than the Class I water quality standard of the surface water environmental quality standard, and there was no heavy metal enrichment. The water quality of each water body in the reservoir is relatively good. The U.S. National Recommended Water Quality Standards for Priority Pollutants (USEPA 2009) are aimed at protecting aquatic life. The average values ​​of heavy metals in the water bodies at each point are lower than the continuous benchmark concentration CCC of the U.S. water quality standards (CCC is the continuous benchmark concentration of the national recommended water quality standards for priority pollutants USEPA 2009), and CMC is the maximum benchmark concentration of the national recommended water quality standards for priority pollutants (USEPA 2009), indicating that the water bodies at each point are not polluted by heavy metals and will not cause chronic toxic consequences.

[0061] By comparing the two periods, the algae control ship operation period and the observation period after the work, it was found that the heavy metal content changes in the two periods were not much different. The three heavy metals of copper, manganese and cadmium all showed a downward trend, while lead and chromium showed a slight increase compared with the algae control ship operation period. This may be because the reservoir reaches its flood season in July and August, with more precipitation, and upstream pollutants are washed downward, but their content is still lower than the surface water Class I water standard, indicating that the impact is not significant.

[0062] By comparing the data from the two periods, it can be concluded that the algae control boat did not cause heavy metal pollution to the reservoir during its operation.

[0063] Table 1 Average heavy metal content in different water layers at reservoir sampling points (μg / L)

[0064]

[0065] Note: The surface water quality standard is GB3838-2002; CCC is the national recommended continuous benchmark concentration of priority pollutants (USEPA 2009); CMC is the national recommended maximum benchmark concentration of priority pollutants (USEPA 2009).

[0066] In summary, the algae bloom can be quickly and effectively controlled through the technical treatment of the present invention, which is a quick-acting, low-cost, pollution-free and easy-to-operate control method.

[0067] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. An unmanned ecological water algae control method, characterized by: The following steps are involved: Step 1, liquid suction: extend the water suction pipe (5) to the bottom of the riverbed, and use the high-pressure pump (3) to suck the muddy and water mixed sewage liquid at the bottom of the river from the water suction pipe (5) into the reaction chamber (6); Step 2, oxidation disinfection treatment: turning on the micro-nano bubble generator (61) and the high-pressure ionization gasification generator (62), subjecting the muddy and water mixed sewage liquid in step 1 to micro-bubble and high-pressure pretreatment to produce a gas-liquid mixed liquid with nano-bubbles; Step 3, liquid spraying: the gas-liquid mixture in step 2 is pumped to the bottom of the riverbed through a high-pressure pump (3) and a spray pipe (7), and the gas-liquid mixture containing nanobubbles is mixed with the silt at the bottom of the riverbed to form a mud-water mixture; Step 4, secondary liquid suction and stirring: the muddy water mixture and part of the nanobubbles at the bottom of the water area are pumped up again through the high-pressure pump (3) and the water suction pipe (5), and transported to the high-pressure stirrer (4) for stirring treatment to obtain a uniform mixed liquid; Step 5, spraying aeration: spraying the uniform mixed liquid obtained in step 4 on the water surface. Before spraying the uniform mixed liquid on the water surface, the uniform mixed liquid is first subjected to ultrasonic vibration treatment by an ultrasonic generator (63); Repeat steps 1 to 5 several times; The device used in the method comprises a hull (1), on which a high-pressure pump (3), a reaction chamber (6) and a high-pressure stirrer (4) are arranged, the water inlet of the high-pressure pump (3) is connected to a water suction pipe (5), the water outlet of the high-pressure pump (3) is connected to a spray pipe (7), the high-pressure pump (3) is respectively connected to the reaction chamber (6) and the high-pressure stirrer (4), and a micro-nano bubble generator (61) and a high-pressure ionization gasification generator (62) are arranged in the reaction chamber (6); An ultrasonic generator (63) is also provided in the reaction chamber (6); the spray pipe (7) is provided in the water suction pipe (5); a water suction chamber (51) is formed between the inner wall of the water suction pipe (5) and the outer wall of the spray pipe (7); a water connection joint (8) is provided at the end of the water suction pipe (5) away from the hull (1); a plurality of strip-shaped through holes (82) are provided on the side wall of the water connection joint (8); the strip-shaped through holes (82) are connected to the water suction chamber (51); and the outlet of the spray pipe (7) is located in the water connection joint (8); The water connection joint (8) is provided with a stirring blade (83), and the stirring blade (83) is located at the water outlet of the spray pipe (7); the hull (1) is also provided with a spraying pipeline connected to the reaction chamber (6), and a control valve assembly is provided in the spraying pipeline, and the height of the water outlet of the spraying pipeline is higher than the height of the water connection joint (8).

2. The unmanned ecological living water algae control method according to claim 1, characterized in that: In step 2, the high voltage ionization generator is set to 50,000-100,000 volts of high voltage electricity for high voltage ionization treatment.

3. The unmanned ecological living water algae control method according to claim 1, characterized in that: In step 4, a proper amount of the uniform mixed solution is taken and placed in a detector for data detection, and the chlorophyll content, water transparency, heavy metal content and pH value are detected respectively.

4. The unmanned ecological living water algae control method according to claim 1, characterized in that: A detection box (9) is arranged on the hull (1), and a plurality of detection instruments are arranged in the detection box (9).

5. The unmanned ecological living water algae control method according to claim 4, characterized in that: The detection instruments include a field algae analyzer, a transparency detector, a heavy metal detector and a pH meter.

Images