CN215559317U

CN215559317U - Underwater movable aeration device

Info

Publication number: CN215559317U
Application number: CN202120751917.0U
Authority: CN
Inventors: 朱核光; 余志荣
Original assignee: Yiweilong Environmental Technology Suzhou Co ltd
Current assignee: Zhu Li
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2022-01-18
Anticipated expiration: 2031-04-13

Abstract

The application provides a portable aeration equipment under water, includes: an underwater mobile unit; the aeration unit is arranged on the underwater moving unit; one end of the air guide unit is communicated with the aeration unit, and the other end of the air guide unit is communicated with the air on the water surface; wherein, the underwater moving unit drives the aeration unit and the air guide unit arranged on the underwater moving unit to move underwater; the aeration unit is used for making the sediment come-up under water, and be used for passing through produce the aeration bubble after the leading-in air of air guide unit to make the sediment of come-up with carry out the pollutant degradation after the aeration bubble mixes, can accomplish the washing away or inhale and deter of water sediment, the aeration and the oxygenating of sediment and water, and can be according to the aquatic dissolved oxygen of perception and temperature and other quality of water composition independently adjust the intensity and the speed of removal of aeration, promote the self-purification ability of water fast, maintain or improve the whole quality of water environment.

Description

Underwater movable aeration device

Technical Field

The application relates to the technical field of underwater aeration, in particular to an underwater movable aeration device.

Background

The improvement and maintenance of the water quality of the water environment are closely related to the dissolved oxygen level in the water environment. When reducing and organic pollutants enter the water body, reducing substances (such as ammonia nitrogen and partial organic matters) directly react with dissolved oxygen in the water to reduce the concentration of the dissolved oxygen in the water body; on the other hand, these reducing contaminants cause the proliferation and growth of aerobic microorganisms in the water, so that oxygen in the water is consumed by aerobic respiration of these microorganisms.

When the consumption speed of the dissolved oxygen in the water exceeds the natural reoxygenation capacity of the water body, the dissolved oxygen level in the water is greatly reduced. The consumption of dissolved oxygen in water and deterioration of water quality due to water quality is often very rapid, often requiring hours or days. Once the dissolved oxygen in water is reduced to a certain degree, the growth of aerobic microorganisms in water is limited, anaerobic microorganisms in water can multiply and grow, the growth rate and the organic matter degradation capability of the anaerobic microorganisms are far lower than those of the aerobic microorganisms (only a fraction or even a fraction of the aerobic microorganisms), and at the moment, pollutants entering the water body cannot be timely decomposed and exist in the water body for a long time, so that the water quality of the water body is accelerated, and the pollutants cannot be recovered for a long time. The double effects of the influence of the reductive pollutants entering the water body on the water body are that on one hand, the growth of aerobic microorganisms is promoted to reduce dissolved oxygen in the water, and on the other hand, after the dissolved oxygen is reduced, the decomposition of the pollutants is inhibited, which is an important reason for the lack or deficiency of the self-cleaning capability of the water environment, the water body pollution and the pharbitis.

Therefore, it is necessary to obtain sufficient dissolved oxygen by aerating a water body, and aeration is a process of forcibly transferring oxygen in the air into a liquid, and the purpose of aeration is to obtain sufficient dissolved oxygen. In addition, the aeration also can prevent the suspension body in the tank from sinking and strengthen the contact between the organic matters in the tank and the microorganisms and dissolved oxygen, thereby ensuring the oxidative decomposition of the microorganisms in the tank on the organic matters in the sewage under the condition of sufficient dissolved oxygen. The oxygenation process is a process of transmembrane mass transfer between two phases, and the mass transfer rate depends on factors such as the concentration of oxygen in a gas phase, the specific surface area of gas-liquid contact, the concentration of dissolved oxygen in a liquid phase and the like.

However, the aeration systems currently used in water pollution control are all fixedly arranged. For large-area river water, aeration pipes need to be laid on the water bottom in a large area by using micropore blast aeration, and when mechanical aeration and aeration are used, the aeration at different parts in the water is not uniform due to arrangement at a few fixed positions. The operation mode of the non-uniform arrangement and continuous oxygenation of the oxygenation device can not meet the requirement of integral oxygenation of the water body, and can cause that the aeration is not economical in energy utilization. In addition, because the aeration forms are fixed, the hydraulic kinetic energy generated by aeration cannot be applied to the sediment for flushing or sucking the sediment, so that the sediment is conveyed to an aerobic area for aeration and treatment.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present application aims to provide an underwater mobile aeration device, which is used for solving the technical problem that the aeration systems used in the water body pollution control in the prior art are all fixedly arranged.

To achieve the above and other related objects, a first aspect of the present application provides an underwater mobile aeration apparatus, comprising: an underwater mobile unit; the aeration unit is arranged on the underwater moving unit; one end of the air guide unit is communicated with the aeration unit, and the other end of the air guide unit is communicated with the air on the water surface; wherein, the underwater moving unit drives the aeration unit and the air guide unit arranged on the underwater moving unit to move underwater; the aeration unit is used for floating underwater bottom mud and generating aeration bubbles after air is introduced through the air guide unit so as to degrade pollutants after the floating bottom mud and the aeration bubbles are mixed.

In some embodiments of the first aspect of the present application, the underwater mobile aeration apparatus further comprises: the underwater sensing unit is used for acquiring actual measurement signals of underwater temperature, underwater saturated dissolved oxygen and the like; the control unit is in communication connection with the underwater sensing unit and used for receiving the actual measurement signals of the underwater temperature, the underwater saturated dissolved oxygen and the like; the control unit calculates a saturated dissolved oxygen theoretical value according to the underwater temperature actual measurement signal and compares the saturated dissolved oxygen theoretical value with a saturated dissolved oxygen actual measurement value; controlling a traveling speed of the underwater moving unit according to a comparison result of the two, and/or controlling an aeration amount and/or a sediment floating amount of the aeration unit according to a comparison result of the two. The control unit can also control the travel path and the travel speed of the underwater mobile unit, and the aeration amount and/or the sediment floating amount of the aeration unit through programs and instructions which are input or set in advance.

In some embodiments of the first aspect of the present application, the aeration unit is of design 1, comprising: a pneumatic stirring unit including a bubble generating part and a flow guide part; the bubble generating part is communicated with the air guide unit and is used for generating large bubbles and small bubbles with different diameters after air is fed; small bubbles float upwards outside the flow guide part after being generated; the large bubbles float upwards in the diversion part and drive liquid in the diversion part to flow upwards so as to suck water and sludge at the lower end of the diversion part and guide the water and sludge to the surrounding water body at the upper end of the diversion part, and then the water and the floating small bubbles are mixed to degrade pollutants.

In some embodiments of the aeration units of the first aspect of the present application employing design No. 1, the air bubble generating portion comprises an air diffusion main pipe and at least one air distribution branch pipe; the air diffusion main pipe is arranged in the flow guide part, the upper end of the air diffusion main pipe is sealed, the lower end of the air diffusion main pipe is provided with an air inlet for connecting the air guide unit, and the pipe wall of the air diffusion main pipe is provided with at least one first aeration part for generating the large bubbles; each air distribution branch pipe is communicated with an opening part arranged on the wall of the air diffusion main pipe and extends out of the flow guide part, and the extension end of the air distribution branch pipe is connected with at least one second aeration part used for generating the small bubbles.

In some embodiments of the first aspect of the present application, the aeration unit is of design 2, comprising: a base including a downwardly inclined support platform; the jet flow water pump is arranged on the supporting platform; the jet flow water pump is provided with a jet flow diffusion pipe, the jet flow diffusion pipe is provided with a Venturi throat, and the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles; the jet flow diffusion pipe sprays aeration bubbles outwards and sprays scouring water flow towards the direction of the sediment, so that the sediment floating upwards after being scoured is mixed with the aeration bubbles to degrade pollutants.

In some embodiments of the first aspect of the present application, the aeration unit is of design 3, comprising: a jet water pump; the downward inclined jet flow diffusion pipe is arranged on the jet flow water pump; the jet flow diffusion pipe is provided with a Venturi throat; the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles; the jet flow diffusion pipe sprays aeration bubbles outwards and sprays scouring water flow towards the direction of sediment.

In some embodiments of the first aspect of the present application, the aeration unit is of design 4, comprising: the jet flow water pump is provided with a jet flow diffusion pipe, and the jet flow diffusion pipe is provided with a Venturi throat; the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles; and the nozzle of the jet branch pipe connected from the jet diffusion pipe faces the direction of the sediment and is used for jetting the split water flow so as to degrade pollutants after the sediment floated upwards after being washed by the split water flow is mixed with the aeration bubbles.

In some embodiments of the first aspect of the present application, the communicating of the other end of the air guide unit with the air on the water surface includes: the other end of the air guide unit is communicated with the floating unit on the water surface so as to be communicated with the air through the floating unit.

In some embodiments of the first aspect of the present application, the floating unit is provided with a satellite signal receiving antenna for receiving positioning and/or navigation data.

As described above, the underwater mobile aeration device of the present application has the following beneficial effects: the utility model can complete the washing or the absorption of the sediment of the water body, the aeration and the oxygenation of the sediment and the water body, can automatically adjust the aeration intensity and the moving speed according to the sensed dissolved oxygen and water temperature in the water and other water quality components, quickly improve the self-purification capacity of the water body, and maintain or improve the overall quality of the water environment. The air source of the oxygen supply system is directly sucked from the air by self-powered equipment or depends on an on-shore oxygen supply station. The system is a movable polluted water body remediation device, avoids laying an oxygenation pipeline in a large area in a river channel, and simultaneously realizes optimization, intellectualization and automation of water body oxygenation. Because the oxygen charging device is mobile, the oxygen charging device can reach any place in the operation interval at a certain frequency, thereby realizing continuous and effective oxygen supply to a larger water body, realizing optimization, intellectualization and automation of operation and getting rid of dependence on manpower. The movable aeration device can be continuously operated all day and time, has a large operation range and high oxygenation efficiency, effectively maintains the water quality of urban river reach, and prevents black and odorous water bodies.

Drawings

Fig. 1 shows a schematic structural diagram of an underwater mobile aeration apparatus according to the 2 nd design in an embodiment of the present application.

Fig. 2 is a schematic structural view of an underwater mobile aeration apparatus according to embodiment of the present invention, which employs the design No. 3.

Fig. 3 is a schematic structural view of an underwater mobile aeration apparatus according to an embodiment of the present invention, which employs the 4 th design.

Fig. 4 shows a schematic structure of the underwater mobile aeration apparatus according to the embodiment of the present invention, which adopts the design 1.

Description of the element reference numerals

101 base

102 jet water pump

103 support platform

104 jet flow diffusion tube

105 Venturi throat

106 air guide unit

107 floating unit

108 satellite signal receiving antenna

109 water temperature sensor and dissolved oxygen sensor

110 control unit

111 charging power supply socket

201 jet water pump

202 jet flow diffusion tube

203 Venturi throat

204 air guide unit

205 floating unit

206 satellite signal receiving antenna

207 water temperature sensor and dissolved oxygen sensor

208 control unit

209 charging power socket

301 jet water pump

302 jet flow diffusion pipe

303 Venturi throat

304 air guide unit

305 fluidic manifold

3051 Branch pipe body

3052 bending tube

306 regulating valve

307 floating unit

308 satellite signal receiving antenna

309 water temperature sensor and dissolved oxygen sensor

310 control unit

311 charging power socket

401 flow guiding part

402 air diffusion main

403 gas distribution branch pipe

404 underwater gas pump

405 air pipe joint

406 big bubble

407 first aeration section

408 opening part

409 small bubble

410 second aeration part

412 floating unit

413 satellite signal receiving antenna

414 Water temperature sensor and dissolved oxygen sensor

415 control Unit

416 charging power supply socket

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It is noted that in the following description, reference is made to the accompanying drawings which illustrate several embodiments of the present application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "below," "lower," "above," "upper," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature as illustrated in the figures.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "retained," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and/or "including" specify the presence of stated features, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, operations, elements, components, items, species, and/or groups thereof. It should be further understood that the terms "or" and/or "as used herein are to be interpreted as being inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions or operations are inherently mutually exclusive in some way.

The utility model aims to provide an underwater movable aeration device for water environment maintenance and restoration, which consists of an underwater movable carrier, an oxygenation system, a water environment sensing system, a positioning and automatic navigation system, a communication system and other systems. The autonomous mobile aeration oxygenation system can complete the washing or the absorption of the sediment of the water body, the aeration and oxygenation of the sediment and the water body, autonomously adjust the aeration strength and the moving speed according to the sensed dissolved oxygen and water temperature in the water and other water quality components, rapidly improve the self-purification capacity of the water body, and maintain or improve the overall quality of the water environment. The air source of the oxygen supply system is directly sucked from the air by self-powered equipment or depends on an on-shore oxygen supply station. The system is a movable polluted water body remediation device, avoids laying an oxygenation pipeline in a large area in a river channel, and simultaneously realizes optimization, intellectualization and automation of water body oxygenation. Because the oxygen charging device is mobile, the oxygen charging device can reach any place in the operation interval at a certain frequency, thereby realizing continuous and effective oxygen supply to a larger water body, realizing optimization, intellectualization and automation of operation and getting rid of dependence on manpower. The movable aeration device can be continuously operated all day and time, has a large operation range and high oxygenation efficiency, effectively maintains the water quality of urban river reach, and prevents black and odorous water bodies.

Specifically, the underwater mobile aeration device provided by the utility model comprises an underwater mobile unit, an aeration unit and an air guide unit; the aeration unit is arranged on the underwater moving unit; one end of the air guide unit is communicated with the aeration unit, and the other end of the air guide unit is communicated with the air on the water surface; wherein, the underwater moving unit drives the aeration unit and the air guide unit arranged on the underwater moving unit to move underwater; the aeration unit is used for floating underwater bottom mud and generating aeration bubbles after air is introduced through the air guide unit so as to degrade pollutants after the floating bottom mud and the aeration bubbles are mixed.

It should be noted that the autonomous mobile aeration oxygenation system related by the utility model is mainly applied to oxygen supply and water quality improvement of natural or artificial excavation of riverways, lakes, urban landscape water bodies and rainwater and sewage receiving water bodies, and can also be applied to aeration oxygen supply of sewage biochemical treatment facilities including oxidation ponds, oxidation ditches and facultative ponds. In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are further described in detail by the following embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The first embodiment is as follows:

as shown in fig. 1, a schematic structural diagram of an aeration unit of an underwater mobile aeration device according to the design 2 in an embodiment of the present invention is shown. The aeration unit of the underwater mobile aeration apparatus in this embodiment includes a base 101 and a jet pump 102, and the base 101 includes a downwardly inclined support platform 103. The jet flow water pump 102 is arranged on the supporting platform 103, the jet flow water pump 102 is provided with a jet flow diffusing pipe 104, the jet flow diffusing pipe 104 is provided with a Venturi throat 105, and the Venturi throat 105 is connected with an air guide unit 106.

In this embodiment, the underwater mobile unit 107 of the underwater mobile aeration apparatus mainly includes a carrying platform for carrying and placing the aeration unit and an underwater propeller for pushing the carrying platform, the aeration unit and the air guide unit disposed thereon to move underwater. It should be noted that the underwater propeller may be a crawler-type propeller, a paddle-propelled propeller, a tail pipe propeller, a direct-current propeller, a hydraulic propeller, a turbine propeller, or the like; in fact, any propeller capable of realizing the underwater propulsion function in the prior art can be applied to the technical solution of the present embodiment, and the present embodiment is not particularly limited.

In this embodiment, the jet water pump 102 sucks water flow from the surrounding water body, introduces air on the water surface through the air guide unit 106 by the negative pressure formed by the venturi throat 105, the introduced air contacts with the water flow in the jet diffuser 104 to generate aeration bubbles, the air is divided into micron to millimeter-sized bubbles in the venturi throat 105 and the jet diffuser 104, and the micron to millimeter-sized bubbles are injected into the surrounding water body along with the jet water flow to supplement dissolved oxygen in the water. The jet flow diffusion pipe 104 sprays aeration bubbles outwards and sprays scouring water flow towards the direction of the sediment, so that the sprayed water flow can effectively scour the sediment of the water body, the scoured sediment and the bubbles are mixed, the sediment is fully contacted with oxygen, and organic matters in the sediment are decomposed. In addition, the bottom sludge also acts as activated sludge, so that the soluble organic matters in the water body are adsorbed and decomposed.

Further, the supporting platform 103 is movable relative to the base 101 to adjust an inclination angle between the jet flow sprayed by the jet flow water pump and a horizontal direction by adjusting an inclination angle of the supporting platform. In particular, the movement of the support platform 103 relative to the base 101 may be driven by a driving mechanism, for example, by a driving motor to rotate it clockwise or counterclockwise. For example, the supporting platform 103 may be movably connected (e.g., hinged or pivoted) with the base body, when the supporting platform 103 rotates counterclockwise along the arrow a direction relative to the base body, the inclination angle of the supporting platform 103 increases, the inclination angle between the jet flow sprayed by the jet flow water pump and the horizontal direction increases, and the washing amount of the sediment also increases; on the contrary, when the supporting platform 103 rotates clockwise relative to the base body along the direction of the arrow a, the inclination angle of the supporting platform 103 becomes smaller, the inclination angle between the jet flow sprayed by the jet flow water pump and the horizontal direction becomes smaller, and the scouring amount of the sediment also becomes smaller.

In some examples, the air guide unit 106 may be an air guide hose, one end of which is connected to the venturi throat 105 and the other end of which is exposed to the water surface and connected to a floating unit 108 (e.g., a buoy) on the water surface. Further, the floating unit is provided with a satellite signal receiving antenna 109 for receiving positioning and/or navigation data, thereby enabling positioning or path navigation etc. of the underwater mobile aeration device.

In some examples, the underwater mobile aeration apparatus further comprises an underwater sensing unit and a control unit; the underwater sensing unit is used for acquiring an underwater temperature actual measurement signal and an underwater saturated dissolved oxygen actual measurement signal; the control unit is in communication connection with the underwater sensing unit and is used for receiving the underwater temperature actual measurement signal and the underwater saturated dissolved oxygen actual measurement signal; the control unit calculates a saturated dissolved oxygen theoretical value according to the underwater temperature actual measurement signal and compares the saturated dissolved oxygen theoretical value with a saturated dissolved oxygen actual measurement value; controlling the advancing speed of the underwater propulsion device according to the comparison result of the two, and/or controlling the aeration amount and/or the sediment floating amount of the aeration unit according to the comparison result of the two. The control unit can also control the travel path and the travel speed of the underwater mobile unit, and the aeration amount and/or the sediment floating amount of the aeration unit through programs and instructions which are input or set in advance.

It should be noted that the underwater sensing unit includes a water temperature sensor and a dissolved oxygen sensor 110, and it should be understood that, although shown in fig. 1 as a whole, the water temperature sensor and the dissolved oxygen sensor are two independent hardware devices, and have different functions, the former is used for detecting the water temperature, and the latter is used for detecting the dissolved amount of the dissolved oxygen in the water. The control unit 111 may be a controller, such as an arm (advanced RISC machines) controller, an fpga (field Programmable Gate array) controller, a soc (system on chip) controller, a dsp (digital Signal processing) controller, or an mcu (micro controller unit) controller; or may be a computer device including components such as memory, a memory controller, one or more processing units (CPUs), peripheral interfaces, RF circuitry, audio circuitry, speakers, microphones, input/output (I/O) subsystems, display screens, other output or control devices, and external ports; the computer includes, but is not limited to, computer systems such as an embedded computer, a single chip microcomputer, a PLC, a desktop computer, a notebook computer, a tablet computer, a smart phone, a smart bracelet, a smart watch, a smart helmet, a smart television, and a Personal Digital Assistant (PDA).

Specifically, the temperature signal and the dissolved oxygen signal obtained by the water temperature sensor and the dissolved oxygen sensor 110 can be transmitted to the transmitter through a data line, the temperature signal and the dissolved oxygen signal are converted into standard electrical signals (such as 4-20 mADC) through the transmitter, and then the standard electrical signals are sent to the control unit 111 for processing after analog-to-digital conversion by the transmitter, so as to control the advancing speed of the underwater mobile unit 107 and/or control the aeration amount and/or the bottom sediment floating amount of the aeration unit according to the comparison result of the temperature signal and the dissolved oxygen signal. For example, if the difference between the theoretical saturated dissolved oxygen value and the measured saturated dissolved oxygen value exceeds a certain threshold, the traveling speed of the underwater mobile unit 107 can be controlled to be reduced; the rotating speed of the water pump can be increased by increasing the frequency conversion motor of the jet flow water pump, so that the jet flow and the sucked air quantity are increased to increase the aeration quantity; in addition, the inclination angle of the adjusting supporting platform can be increased to enlarge the jet angle of the water pump, so that the scouring amount of the sediment is increased.

It is understood that the higher the water temperature, the lower the dissolved oxygen content of the water, whereas the lower the water temperature, the higher the dissolved oxygen content of the water. Thus, high water temperatures reduce the amount of dissolved oxygen in the water. For ease of understanding, the relationship between the temperature value and the saturated dissolved oxygen value is explained below by taking table 1 as an example. It should be understood, however, that table 1 is for reference only and is not limiting as to water temperature or saturated dissolved oxygen value.

Table 1: saturated dissolved oxygen values at various temperatures

Temperature (. degree.C.)	Dissolved oxygen (mg/L)	Temperature (. degree.C.)	DissolutionOxygen (mg/L)
				0	14.64	18	9.46
1	14.22	19	9.27
				2	13.82	20	9.08
3	13.44	21	8.90
				4	13.09	22	8.73
5	12.74	23	8.57
				6	12.42	24	8.41
7	12.11	25	8.25
				8	11.81	26	8.11
9	1.53	27	7.96
				10	11.26	28	7.82
11	11.01	29	7.69
				12	10.77	30	7.56
13	10.53	31	7.43
				14	10.30	32	7.30
15	10.08	33	7.18
				16	9.86	34	7.07
17	9.66	35	6.95

In some examples, a charging power outlet 112 is also provided on the floatation unit 108 for charging with an onboard mobile charging post to power all powered components on the underwater mobile aeration device.

Example two:

fig. 2 shows a schematic structural diagram of an aeration unit of an underwater mobile aeration device adopting the design No. 3 in one embodiment of the utility model. The aeration unit of the underwater mobile aeration device comprises a jet water pump 201, the jet water pump 201 is provided with a jet diffuser 202, the jet diffuser 202 is provided with a venturi throat 203, and the venturi throat 203 is connected with an air guide unit 204.

The underwater mobile unit 205 of the underwater mobile aeration apparatus in this embodiment mainly includes a carrying platform for carrying and placing the aeration unit and an underwater propeller for pushing the carrying platform and the aeration unit and the air guide unit provided thereon to move underwater. It should be noted that the underwater propeller may be a crawler-type propeller, a paddle-propelled propeller, a tail pipe propeller, a direct-current propeller, a hydraulic propeller, a turbine propeller, or the like; in fact, any propeller capable of realizing the underwater propulsion function in the prior art can be applied to the technical solution of the present embodiment, and the present embodiment is not particularly limited.

The jet water pump 201 sucks water flow from the surrounding water body, air on the water surface is guided in through the air guide unit 204 through negative pressure formed by the venturi throat 203, the guided air is contacted with the water flow in the jet diffusion pipe 202 to generate aeration bubbles, the air is divided into micron-millimeter-sized bubbles in the venturi throat 203 and the jet diffusion pipe 202, and the micron-sized bubbles and the millimeter-sized bubbles are injected into the surrounding water body along with jet water flow to supplement dissolved oxygen in the water. The jet flow diffusion pipe 202 sprays aeration bubbles outwards and sprays scouring water flow towards the direction of the sediment, so that the sprayed water flow can effectively scour the sediment of the water body, the scoured sediment and the bubbles are mixed, the sediment is fully contacted with oxygen, and organic matters in the sediment are decomposed. In addition, the bottom sludge also acts as activated sludge, so that the soluble organic matters in the water body are adsorbed and decomposed.

Further, the jet flow diffusing pipe 202 is movable relative to the jet flow water pump 201 to adjust an inclination angle between the jet flow sprayed from the jet flow diffusing pipe and the horizontal direction by adjusting an inclination angle thereof. Specifically, the movement of the jet diffuser 202 relative to the jet pump 201 may be driven by a driving mechanism, such as a motor, to rotate clockwise or counterclockwise. For example, the jet diffuser 202 may be movably connected (e.g., hinged or pivoted) to the jet pump 201, and when the jet diffuser 202 rotates counterclockwise along the arrow B direction with respect to the jet pump 201, the inclination angle of the jet diffuser 202 is increased (the included angle between the jet diffuser and the horizontal direction is increased), and the washing amount of the sediment is increased accordingly; conversely, when the jet diffuser 202 rotates clockwise in the direction opposite to the arrow B with respect to the jet water pump 201, the inclination angle of the jet diffuser 202 decreases, and the amount of sludge erosion decreases accordingly.

In some examples, the air guide unit 204 may be an air guide hose, one end of which is connected to the venturi throat 203 and the other end of which is exposed to the water surface and connected to a floating unit 206 (such as a buoy) on the water surface. Further, the floating unit 205 is provided with a satellite signal receiving antenna 207 for receiving positioning and/or navigation data, thereby enabling positioning or path navigation of the underwater jet aerator, etc.

In some examples, the underwater jet aeration device further comprises an underwater sensing unit and a control unit; the underwater sensing unit is used for acquiring an underwater temperature actual measurement signal and an underwater saturated dissolved oxygen actual measurement signal; the control unit is in communication connection with the underwater sensing unit and is used for receiving the underwater temperature actual measurement signal and the underwater saturated dissolved oxygen actual measurement signal; the control unit calculates a saturated dissolved oxygen theoretical value according to the underwater temperature actual measurement signal and compares the saturated dissolved oxygen theoretical value with a saturated dissolved oxygen actual measurement value; controlling the advancing speed of the underwater propulsion device according to the comparison result of the two, and/or controlling the aeration amount and/or the sediment floating amount of the aeration unit according to the comparison result of the two. The control unit can also control the travel path and the travel speed of the underwater mobile unit, and the aeration amount and/or the sediment floating amount of the aeration unit through programs and instructions which are input or set in advance.

The underwater sensing unit includes a water temperature sensor and a dissolved oxygen sensor 208, and it should be understood that, although shown in fig. 1 as a whole, the water temperature sensor and the dissolved oxygen sensor are two independent hardware devices, and have different functions, the former is used for detecting the water temperature, and the latter is used for detecting the dissolved amount of the dissolved oxygen in the water. The control unit 209 may be a controller, such as an arm (advanced RISC machines) controller, an fpga (field Programmable Gate array) controller, a soc (system on chip) controller, a dsp (digital Signal processing) controller, or an mcu (micro controller unit) controller; or may be a computer device including components such as memory, a memory controller, one or more processing units (CPUs), peripheral interfaces, RF circuitry, audio circuitry, speakers, microphones, input/output (I/O) subsystems, display screens, other output or control devices, and external ports; the computer includes, but is not limited to, computer systems such as an embedded computer, a single chip microcomputer, a PLC, a desktop computer, a notebook computer, a tablet computer, a smart phone, a smart bracelet, a smart watch, a smart helmet, a smart television, and a Personal Digital Assistant (PDA).

Specifically, the temperature signal and the dissolved oxygen signal obtained by the water temperature sensor and the dissolved oxygen sensor 208 can be transmitted to the transmitter through a data line, the temperature signal and the dissolved oxygen signal are converted into standard electrical signals (such as 4-20 mADC) through the transmitter, and then the standard electrical signals are transmitted to the control unit 209 for processing after analog-to-digital conversion by the transmitter, so as to control the advancing speed of the underwater mobile unit 107 and/or control the aeration amount and/or the bottom sediment floating amount of the aeration unit according to the comparison result of the temperature signal and the dissolved oxygen signal. For example, if the difference between the theoretical saturated dissolved oxygen value and the measured saturated dissolved oxygen value exceeds a certain threshold, the traveling speed of the underwater mobile unit 107 can be controlled to be reduced; the rotating speed of the water pump can be increased by increasing the frequency conversion motor of the jet flow water pump, so that the jet flow and the sucked air quantity are increased to increase the aeration quantity; in addition, the inclination angle of the adjusting supporting platform can be increased to enlarge the jet angle of the water pump, so that the scouring amount of the sediment is increased. It is understood that the higher the water temperature, the lower the dissolved oxygen content of the water, whereas the lower the water temperature, the higher the dissolved oxygen content of the water. Thus, high water temperatures reduce the amount of dissolved oxygen in the water. The relationship between the temperature value and the saturated dissolved oxygen value is shown in table 1 above, and therefore, the detailed description thereof is omitted.

In some examples, a charging power outlet 210 is also provided on the floatation unit 206 for charging with a shipboard mobile charging post to power all powered components on the underwater jet aerator.

Example three:

fig. 3 is a schematic structural diagram showing an aeration unit of the underwater mobile aeration device adopting the design No. 4 in one embodiment of the utility model. The jet aeration unit of the underwater jet aeration device comprises a jet water pump 301, the jet water pump 301 is provided with a jet diffuser 302, the jet diffuser 302 is provided with a venturi throat 303, and the venturi throat 303 is connected with an air guide unit 304. The underwater jet aeration device also comprises a jet branch pipe 305 connected from the jet diffusion pipe 302, and the nozzle of the jet branch pipe 305 is arranged towards the direction of the sediment for spraying the split water flow.

The underwater moving unit 306 of the underwater moving type aeration device in this embodiment mainly includes a carrying platform for carrying and placing the aeration unit and an underwater propeller for pushing the carrying platform and the aeration unit and the air guide unit provided thereon to move underwater. It should be noted that the underwater propeller may be a crawler-type propeller, a paddle-propelled propeller, a tail pipe propeller, a direct-current propeller, a hydraulic propeller, a turbine propeller, or the like; in fact, any propeller capable of realizing the underwater propulsion function in the prior art can be applied to the technical solution of the present embodiment, and the present embodiment is not particularly limited.

The jet water pump 301 sucks water flow from the surrounding water body, air on the water surface is guided in through the air guide unit 304 through negative pressure formed by the venturi throat 303, the guided air is contacted with the water flow in the jet diffusing pipe 302 to generate aeration bubbles, the air is divided into micron-to-millimeter-sized bubbles in the venturi throat 303 and the jet diffusing pipe 302, and the bubbles are ejected outwards by the jet diffusing pipe 302. The jet branch pipe 305 connected from the jet diffusion pipe 302 sprays scouring water flow to the sediment, so that the sprayed water flow can effectively scour the sediment of the water body, the washed sediment and air bubbles are mixed, the sediment is fully contacted with oxygen, and organic matters in the sediment are decomposed. In addition, the bottom sludge also acts as activated sludge, so that the soluble organic matters in the water body are adsorbed and decomposed.

In some examples, the jet branch pipe 305 includes a branch pipe body 3051 and a bending pipe 3052 disposed toward the bottom of the mud, and the bending pipe 3052 is movable relative to the branch pipe body 3051 to adjust an inclination angle between a jet ejected from the jet branch pipe and a horizontal direction by adjusting an inclination angle thereof.

Specifically, the movement of the bending pipe 3052 relative to the branch pipe body 3051 can be driven by a driving mechanism, such as a driving motor, to rotate clockwise or counterclockwise. For example, the bending pipe 3052 can be movably connected (e.g., hinged or pivoted) to the branch pipe body 3051, and when the bending pipe 3052 rotates counterclockwise along the arrow C direction with respect to the branch pipe body 3051, the inclination angle of the bending pipe 3052 is increased (the included angle between the bending pipe and the horizontal direction is increased), and the washing amount of the sediment is increased accordingly; conversely, when the bending pipe 3052 rotates clockwise in the direction opposite to the arrow C with respect to the branch pipe body 3051, the inclination angle of the bending pipe 3052 decreases, and the amount of erosion of the sediment also decreases accordingly.

In some examples, the jet manifold 305 is provided with a regulating valve 307 to regulate the flow rate of the diverted water stream. It should be noted that the flow rate of the split water flow determines the size of the washing amount of the sediment, that is, when the adjusting valve 307 is adjusted to be large, the water outlet amount of the jet branch pipe 305 is large, and the washing force of the sediment is large; on the contrary, when the regulating valve 306 is adjusted, the water output of the jet branch pipe 305 is small, and the scouring force to the sediment is small.

In some examples, the air guide unit 304 may be an air guide hose, one end of which is connected to the venturi throat 303 and the other end of which is exposed to the water surface and connected to a floating unit 308 (e.g., a buoy) on the water surface. Further, the floating unit 308 is provided with a satellite signal receiving antenna 309 for receiving positioning and/or navigation data, thereby enabling positioning or path navigation etc. of the underwater jet aerator.

It should be noted that the underwater sensing unit includes a water temperature sensor and a dissolved oxygen sensor 310, and it should be understood that, although shown in fig. 1 as a whole, the water temperature sensor and the dissolved oxygen sensor are two independent hardware devices, and have different functions, the former is used for detecting the water temperature, and the latter is used for detecting the dissolved amount of the dissolved oxygen in the water. The control unit 311 may be a controller, such as an arm (advanced RISC machines) controller, an fpga (field Programmable Gate array) controller, a soc (system on chip) controller, a dsp (digital Signal processing) controller, or an mcu (micro controller unit) controller; or may be a computer device including components such as memory, a memory controller, one or more processing units (CPUs), peripheral interfaces, RF circuitry, audio circuitry, speakers, microphones, input/output (I/O) subsystems, display screens, other output or control devices, and external ports; the computer includes, but is not limited to, computer systems such as an embedded computer, a single chip microcomputer, a PLC, a desktop computer, a notebook computer, a tablet computer, a smart phone, a smart bracelet, a smart watch, a smart helmet, a smart television, and a Personal Digital Assistant (PDA).

Specifically, the temperature signal and the dissolved oxygen signal obtained by the water temperature sensor and the dissolved oxygen sensor 310 can be transmitted to the transmitter through a data line, the temperature signal and the dissolved oxygen signal are converted into standard electrical signals (such as 4-20 mADC) through the transmitter, and then the standard electrical signals are sent to the control unit 311 for processing after analog-to-digital conversion by the transmitter, so as to control the advancing speed of the underwater mobile unit 306 and/or control the aeration amount and/or the bottom sediment floating amount of the aeration unit according to the comparison result of the temperature signal and the dissolved oxygen signal. For example, if the difference between the theoretical saturated dissolved oxygen value and the measured saturated dissolved oxygen value exceeds a certain threshold, the moving speed of the underwater mobile unit 306 can be controlled to be reduced; the rotating speed of the water pump can be increased by increasing the frequency conversion motor of the jet flow water pump, so that the jet flow and the sucked air quantity are increased to increase the aeration quantity; in addition, the inclination angle of the adjusting supporting platform can be increased to enlarge the jet angle of the water pump, so that the scouring amount of the sediment is increased. It is understood that the higher the water temperature, the lower the dissolved oxygen content of the water, whereas the lower the water temperature, the higher the dissolved oxygen content of the water. Thus, high water temperatures reduce the amount of dissolved oxygen in the water. The relationship between the temperature value and the saturated dissolved oxygen value is shown in table 1 above, and therefore, the detailed description thereof is omitted.

In some examples, a charging power outlet 312 is also provided on the floatation unit 308 for charging with an onboard mobile charging pole to power all powered components on the underwater jet aerator.

Example four:

fig. 4 shows a schematic structural diagram of an aeration unit of an underwater mobile aeration device according to the design 1 in an embodiment of the present invention. The aeration unit of the underwater mobile aeration apparatus in this embodiment includes a pneumatic stirring unit mainly composed of a flow guide part 401 and a bubble generation part mainly composed of an air diffusion main pipe 402 and at least one air distribution branch pipe 403. The air diffusion main pipe is arranged in the flow guide part 401, the upper end of the air diffusion main pipe is sealed, the lower end of the air diffusion main pipe is provided with an air pipe joint 405 for connecting an underwater air pump 404, and the pipe wall of the air diffusion main pipe is provided with at least one first aeration part 407 for generating large bubbles 406. The air distribution branch pipes 403 are communicated with an opening part 408 arranged on the wall of the air diffusion main pipe, each air distribution branch pipe 403 extends out of the flow guide part 401, and the extending end of each air distribution branch pipe is connected with at least one second aeration part 410 for generating small air bubbles 409.

The underwater mobile unit 411 of the underwater mobile aeration apparatus in this embodiment mainly includes a carrying platform for carrying and placing the aeration unit and an underwater propeller for pushing the carrying platform and the aeration unit and the air guide unit provided thereon to move underwater. It should be noted that the underwater propeller may be a crawler-type propeller, a paddle-propelled propeller, a tail pipe propeller, a direct-current propeller, a hydraulic propeller, a turbine propeller, or the like; in fact, any propeller capable of realizing the underwater propulsion function in the prior art can be applied to the technical solution of the present embodiment, and the present embodiment is not particularly limited.

The specific aeration process is as follows: the small bubbles 409 are generated outside the flow guide part 401 and float upwards after being generated; the large bubbles 406 are generated inside the flow guide part 401, and float upwards after being generated, liquid inside the flow guide part 401 is driven to move upwards by six pulses in the upward floating process, the liquid flowing upwards forms continuous vacuum suction force at the bottom of the flow guide part 401, water and soft deposited sludge around the lower end of the flow guide part 401 are forced to be sucked into the flow guide part 401, flow to the upper end of the flow guide part 401 along with the large bubbles 406 and diffuse to the surrounding water body, and the water and the soft deposited sludge are fully mixed with the small bubbles around the flow guide part 401, so that the effects of oxygenation and sludge treatment are achieved.

In some examples, the first aeration portion 407 includes bubble holes opened on the tube wall of the air diffusion main 402. The bubble holes include through holes having a diameter in millimeters to create large bubbles 406 having a diameter in millimeters to centimeters. For example, the bubble holes can be selected from small holes with a diameter of 0.1-5 mm, preferably 1-3 mm, and bubbles with a diameter of millimeter to centimeter can be generated after the gas passes through the small holes.

In some examples, the second aeration part 410 includes a micro-porous aeration head to generate micro-bubbles having a diameter of micrometer to millimeter. The microporous aeration head comprises a disc type microporous aeration disc and/or a microporous aeration pipe; the porous material forming the micropores comprises a high molecular porous material, an inorganic sintered porous material or a porous material formed by perforating on the surface of an inorganic or high molecular organic material.

In some examples, the underwater air pump 404 is connected to an air hose 411, and the other end of the air hose 411 is exposed to the water surface and connected to a floating unit 412 (e.g., a buoy) on the water surface. Further, the floating unit 412 is provided with a satellite signal receiving antenna 413 for receiving positioning and/or navigation data, thereby enabling positioning or path navigation, etc. of the underwater mobile aeration apparatus.

It should be noted that the underwater sensing unit includes a water temperature sensor and a dissolved oxygen sensor 414, and it should be understood that, although shown in fig. 1 as an integral unit, the water temperature sensor and the dissolved oxygen sensor are two independent hardware devices, and have different functions, the former is used for detecting the water temperature, and the latter is used for detecting the dissolved amount of the dissolved oxygen in the water. The control unit 415 may be a controller, such as an arm (advanced RISC machines) controller, an fpga (field Programmable Gate array) controller, a soc (system on chip) controller, a dsp (digital Signal processing) controller, or an mcu (micro controller unit) controller; or may be a computer device including components such as memory, a memory controller, one or more processing units (CPUs), peripheral interfaces, RF circuitry, audio circuitry, speakers, microphones, input/output (I/O) subsystems, display screens, other output or control devices, and external ports; the computer includes, but is not limited to, computer systems such as an embedded computer, a single chip microcomputer, a PLC, a desktop computer, a notebook computer, a tablet computer, a smart phone, a smart bracelet, a smart watch, a smart helmet, a smart television, and a Personal Digital Assistant (PDA).

Specifically, the temperature signal and the dissolved oxygen signal obtained by the water temperature sensor and the dissolved oxygen sensor 414 may be transmitted to the transmitter through a data line, the temperature signal and the dissolved oxygen signal are converted into standard electrical signals (e.g., 4-20 mADC) by the transmitter, and then the standard electrical signals are transmitted to the control unit 415 for processing after analog-to-digital conversion by the transmitter, so as to control the traveling speed of the underwater mobile unit 411 and/or control the aeration amount and/or the bottom sediment floating amount of the aeration unit according to the comparison result of the two. For example, if the difference between the theoretical saturated dissolved oxygen value and the measured saturated dissolved oxygen value exceeds a certain threshold, the traveling speed of the underwater mobile unit 411 may be controlled to be reduced; the rotating speed of the water pump can be increased by increasing the frequency conversion motor of the jet flow water pump, so that the jet flow and the sucked air quantity are increased to increase the aeration quantity; in addition, the inclination angle of the adjusting supporting platform can be increased to enlarge the jet angle of the water pump, so that the scouring amount of the sediment is increased. It is understood that the higher the water temperature, the lower the dissolved oxygen content of the water, whereas the lower the water temperature, the higher the dissolved oxygen content of the water. Thus, high water temperatures reduce the amount of dissolved oxygen in the water. The relationship between the temperature value and the saturated dissolved oxygen value is shown in table 1 above, and therefore, the detailed description thereof is omitted.

In some examples, a charging power outlet 416 is also provided on the floatation unit 412 for charging with an onboard mobile charging pole to power all powered components on the underwater jet aerator.

It should be emphasized that the underwater mobile aeration device provided by the utility model is a set of hardware equipment, comprising an underwater mobile unit, an aeration unit, an air guide unit and other hardware units, the underwater mobile aeration device can be used independently, and can also be used in combination with some existing programs or software, but the underwater mobile aeration device does not relate to any update of software technology per se.

In conclusion, the utility model provides an underwater mobile aeration device which can complete the flushing or the absorption of the sediment of the water body, the aeration and the oxygenation of the sediment and the water body, can automatically adjust the aeration intensity and the moving speed according to the sensed dissolved oxygen and water temperature in the water and other water quality components, quickly improve the self-purification capacity of the water body, and maintain or improve the overall quality of the water environment. The air source of the oxygen supply system is directly sucked from the air by self-powered equipment or depends on an on-shore oxygen supply station. The system is a movable polluted water body remediation device, avoids laying an oxygenation pipeline in a large area in a river channel, and simultaneously realizes optimization, intellectualization and automation of water body oxygenation. Because the oxygen charging device is mobile, the oxygen charging device can reach any place in the operation interval at a certain frequency, thereby realizing continuous and effective oxygen supply to a larger water body, realizing optimization, intellectualization and automation of operation and getting rid of dependence on manpower. The movable aeration device can be continuously operated all day and time, has a large operation range and high oxygenation efficiency, effectively maintains the water quality of urban river reach, and prevents black and odorous water bodies. Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. An underwater mobile aeration apparatus, comprising:

an underwater mobile unit;

the aeration unit is arranged on the underwater moving unit;

one end of the air guide unit is communicated with the aeration unit, and the other end of the air guide unit is communicated with the air on the water surface;

wherein, the underwater moving unit drives the aeration unit and the air guide unit arranged on the underwater moving unit to move underwater; the aeration unit is used for floating underwater bottom mud and generating aeration bubbles after air is introduced through the air guide unit so as to degrade pollutants after the floating bottom mud and the aeration bubbles are mixed.

2. The underwater mobile aeration apparatus of claim 1, further comprising:

the underwater sensing unit is used for acquiring an underwater temperature actual measurement signal and an underwater saturated dissolved oxygen actual measurement signal;

the control unit is in communication connection with the underwater sensing unit and used for receiving the underwater temperature and underwater saturated dissolved oxygen actual measurement signals; the control unit calculates a saturated dissolved oxygen theoretical value according to the underwater temperature actual measurement signal and compares the saturated dissolved oxygen theoretical value with a saturated dissolved oxygen actual measurement value; controlling a traveling speed of the underwater mobile unit according to a comparison result of the two, and/or controlling an aeration amount and/or a sediment floating amount of the aeration unit according to a comparison result of the two; or, the control unit controls the traveling path and the traveling speed of the underwater mobile unit, and the aeration amount and/or the sediment floating amount of the aeration unit through a program and an instruction input or set in advance.

3. The underwater mobile aeration apparatus of claim 1, wherein the aeration unit is of design 1, comprising:

a pneumatic stirring unit including a bubble generating part and a flow guide part;

the bubble generating part is communicated with the air guide unit and is used for generating large bubbles and small bubbles with different diameters after air is fed; small bubbles float upwards outside the flow guide part after being generated; the large bubbles float upwards in the diversion part and drive liquid in the diversion part to flow upwards so as to suck water and sludge at the lower end of the diversion part and guide the water and sludge to the surrounding water body at the upper end of the diversion part, and then the water and the floating small bubbles are mixed to degrade pollutants.

4. The underwater mobile aeration apparatus of claim 3, wherein the bubble generating part includes an air diffusion main pipe and at least one air distribution branch pipe; the air diffusion main pipe is arranged in the flow guide part, the upper end of the air diffusion main pipe is sealed, the lower end of the air diffusion main pipe is provided with an air inlet for connecting the air guide unit, and the pipe wall of the air diffusion main pipe is provided with at least one first aeration part for generating the large bubbles; each air distribution branch pipe is communicated with an opening part arranged on the wall of the air diffusion main pipe and extends out of the flow guide part, and the extension end of the air distribution branch pipe is connected with at least one second aeration part used for generating the small bubbles.

5. The underwater mobile aeration apparatus of claim 1, wherein the aeration unit is of design 2, comprising:

a base including a downwardly inclined support platform;

the jet flow water pump is arranged on the supporting platform; the jet flow water pump is provided with a jet flow diffusion pipe, the jet flow diffusion pipe is provided with a Venturi throat, and the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles; the jet flow diffusion pipe sprays aeration bubbles outwards and sprays scouring water flow towards the direction of the sediment, so that the sediment floating upwards after being scoured is mixed with the aeration bubbles to degrade pollutants.

6. The underwater mobile aeration apparatus of claim 1, wherein the aeration unit is of design 3, comprising:

a jet water pump;

the downward inclined jet flow diffusion pipe is arranged on the jet flow water pump; the jet flow diffusion pipe is provided with a Venturi throat; the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles; the jet flow diffusion pipe sprays aeration bubbles outwards and sprays scouring water flow towards the direction of sediment.

7. The underwater mobile aeration apparatus of claim 1, wherein the aeration unit is of design 4, comprising:

the jet flow water pump is provided with a jet flow diffusion pipe, and the jet flow diffusion pipe is provided with a Venturi throat; the Venturi throat is connected with the air guide unit; the jet flow water pump sucks water flow, air on the water surface is guided in through the air guide unit through negative pressure formed by the Venturi throat, and the guided air is contacted with the water flow in the jet flow diffusion pipe to generate aeration bubbles;

and the nozzle of the jet branch pipe connected from the jet diffusion pipe faces the direction of the sediment and is used for jetting the split water flow so as to degrade pollutants after the sediment floated upwards after being washed by the split water flow is mixed with the aeration bubbles.

8. The underwater mobile aeration apparatus of claim 1, wherein the other end of the air guide unit communicates with the air on the water surface, comprising: the other end of the air guide unit is communicated with the floating unit on the water surface so as to be communicated with the air through the floating unit.

9. An underwater mobile aeration apparatus according to claim 8 wherein the floatation unit is provided with a satellite signal receiving antenna for receiving positioning and/or navigation data.