CN114737514B

CN114737514B - Sewage purification treatment device for aquatic environment engineering and installation method

Info

Publication number: CN114737514B
Application number: CN202210430280.4A
Authority: CN
Inventors: 喻学文
Original assignee: Changsha Environmental Protection College
Current assignee: Changsha Environmental Protection College
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-06-06
Anticipated expiration: 2042-04-22
Also published as: CN114737514A

Abstract

The invention relates to the technical field of aquatic environment engineering, and particularly discloses a sewage purification treatment device for the aquatic environment engineering and an installation method thereof, comprising a water retaining assembly, a water level head detection unit, a regulating assembly and a power generation assembly, wherein the water retaining assembly comprises a water retaining dam and a water level head detection unit arranged on the water retaining dam; the device can lead the water flow of the main river channel to enter the branch river channel, the water flow of the branch river channel to enter the main river channel and the water of the pond to carry out the branch river channel, thereby leading the water flow to form good water circulation, namely purifying sewage through the natural purification function of the river channel, and generating power by utilizing the impact force of the water flow in the water circulation process, namely, the device not only can carry out sewage purification by accelerating the water circulation of the T-shaped river channel, but also can utilize the impact force generated by the water circulation to carry out power generation and energy conservation.

Description

Sewage purification treatment device for aquatic environment engineering and installation method

Technical Field

The invention relates to the technical field of aquatic environment engineering, in particular to a sewage purifying treatment device for the aquatic environment engineering and an installation method.

Background

The aquatic environment refers to the environment with water such as river, lake, wetland and the like. In the river course of aquatic environment is administered, general processing direction is to main river course clearance, however because of main river course and the intercommunication in branch river course, the aquatic environment in branch river course can influence the aquatic environment in main river course to a certain extent. Therefore, in the river course treatment process, both the main river course and the branch river course need to be treated.

However, in some areas, due to the previous river management, a plurality of branch river channels are manually dug out, and under the influence of the factors such as pond reconstruction, road construction, river water and grass propagation, the branch river channels are blocked, so that a T-shaped river channel is formed, and the water quality in the branch river channel is easily turbid and smelly due to the fact that the width of the branch river channel is smaller, water and grass in the culture pond are accumulated. The water quality of the branch river is turbid and smelly, the water quality of the culture pond can be influenced, when the water quality inside the culture pond cannot be improved by changing water through the water flow of the branch river, the pond which is slightly close to the main river can select a lengthened water inlet pipe, the pond which is far away from the main river can select medicament improvement, the medicament improvement can treat the symptoms and root cause, the water quality in the pond is easy to eutrophic, the water quality in the pond is discharged into the branch river after eutrophication, the aquatic plants are more luxuriant, and the aquatic environment can be extremely influenced after the aquatic plants are luxuriant, so that malignant circulation is formed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a sewage purification treatment device for aquatic environment engineering and an installation method.

The invention relates to a sewage purification treatment device for aquatic environment engineering, which comprises a water retaining component, wherein the water retaining component comprises a water retaining dam and a water level fall detection unit arranged on the water retaining dam, the water retaining component is arranged at the junction of a T-shaped river channel, an adjusting component is arranged at a water outlet of a pond, and a power generation component comprises two groups of first power generation units arranged on the water retaining component and a second power generation unit arranged on the adjusting component.

Above-mentioned technical scheme design, the juncture at T shape river course through the manger plate subassembly setting has reached the effect of cutting off branch river course and main river course, when the pond draws water, the water level in branch river course can take place to descend, the water level in branch river course descends and can make its and the water level liquid level in main river course appear the fall, the data that the rethread water level fall detecting element detected starts electric telescopic handle, can make the rivers of main river course sink into branch river course through opening the water conservancy diversion hole of retaining dam, thereby the rivers through main river course and the rivers of branch river course collect the quality of water of improving branch river course.

As a further improvement of the invention, the side surface of the retaining dam is transversely provided with a diversion hole, the center of the bottom of the inner wall of the diversion hole is provided with a mounting groove, the bottom of the inner wall of the mounting groove is vertically and upwards fixedly connected with an electric telescopic rod, the top of the electric telescopic rod is fixedly connected with a water stop plate, the top of the diversion hole is provided with a fitting groove matched with the water stop plate, and both sides of the retaining dam, which are close to the front surface and the back surface, are vertically and downwards provided with sliding grooves.

Through the technical scheme, when the water level of the branch river is lower than that of the main river, water flow of the main river can automatically enter the branch river.

As a further improvement of the invention, the water level drop detection unit comprises four floating plates, four infrared range finders and an external singlechip, wherein the inner sides of the floating plates are fixedly connected with sliding blocks which are in sliding connection with the sliding grooves, and the four infrared range finders are fixedly arranged at the top of the retaining dam through connecting rods and are positioned right above the four floating plates.

Through the design of the technical scheme, the effect of detecting the water level and the liquid level of the branch river and the main river is achieved.

As a further improvement of the invention, the adjusting component comprises a mounting plate and mounting rods, the four corners of the mounting plate are respectively provided with a through hole for the mounting rods to penetrate, the surface of each mounting rod is provided with a mounting hole from top to bottom, and the bottoms of the inner walls of the mounting holes are hinged with two triangular support plates for supporting the mounting plate through hinges.

Through above-mentioned technical scheme, can adjust the mounting panel height on the installation pole, can adapt to some river course uplifts or sunken domains, can avoid simultaneously that current peasant household drainage time, the outlet is placed on the river slope, and the soil of appearance river slope runs off the condition emergence under the washing of rivers.

As a further improvement of the invention, the first power generation unit comprises a first storage battery, a first power generator, a protective shell and a transmission disc arranged on the inner wall of the protective shell, wherein the inner wall of the protective shell close to the inner side is fixedly connected with a mounting frame, the inner wall of the mounting frame is inserted with a first power generation roller through a bearing, the surface of the first power generation roller close to the end is in transmission connection with the transmission disc through a first transmission belt, the transmission disc is in transmission connection with an output shaft of the first power generator through a second transmission belt, the first power generation roller close to a main river channel in a T-shaped river channel is positioned above a diversion hole, the first power generation roller close to a branch river channel in the T-shaped river channel is positioned below the diversion hole, the two first power generators and the first storage battery are both arranged on the top of a retaining dam, the top of the retaining dam is also provided with a water pump, the water inlet end of the water pump is positioned in the branch river channel of the T-shaped river channel through a water pipe, and the water outlet end of the water pump is communicated with the top of the inner wall of the protective shell close to the main river channel.

Through the technical scheme, the effect of generating electricity by utilizing water flow in the water flow exchange process of the branch river and the main river is achieved.

As a further improvement of the invention, the second power generation unit comprises a second power generator, a protective shell and a second storage battery, wherein the second power generator is arranged at the top of the mounting plate, the top of the protective shell is communicated with a water inlet pipe which is communicated with a drainage pump of a farmer, a second power generation roller is transversely arranged in the protective shell, one end of the second power generation roller is in transmission connection with an output shaft of the second power generator, and an opening for water outlet is formed in one side, close to the center of the river channel, of the protective shell.

Through the technical scheme, the water flow which can be used for draining water of farmers is used for generating electricity, and the generated electric energy is used for draining water of the farmers, so that the electricity cost for draining water of the farmers is reduced.

As a further improvement of the invention, the four corners of the top of the retaining dam are respectively provided with a butt joint groove vertically downwards, and the inner walls of the butt joint grooves are matched with baffle plates.

The method for installing the sewage purification treatment device for the aquatic environment engineering comprises the following steps:

s1: firstly, the branch river of the T-shaped river is dug, so that the water level in the branch river and the water level in the main river are more likely to form a drop, and the water storage capacity of the branch river is increased;

s2: then the retaining dams are arranged at the junction of the T-shaped river channel, if the width of the junction is too narrow, the width needs to be widened, if the width of the junction is too wide, the retaining dams are arranged at the junction, the baffle plates are fit into the butt joint grooves of the retaining dams, and then soil is filled between the baffle plates;

s3: then two first power generation units are arranged on two sides of the water retaining dam, the water inlet end and the water outlet end of a water pump at the top of the water retaining dam are communicated with water pipes, the tail end of the water pipe connected with the water inlet end is positioned in a branch river channel, the water pipe communicated with the water outlet end is communicated with the inside of a protective shell positioned on one side of a main river channel, then a first storage battery is electrically connected with the first power generator and the water pump, and then the water pump is electrically connected with mains supply;

s4: the adjusting component is arranged at the water outlet of the pond, and the mounting plate is adjusted to a proper height by sliding the mounting plate up and down and is supported by the triangular support plate;

s5: and then the second power generation unit is arranged on the mounting plate, the water inlet pipe in the second power generation unit is communicated with the drain pump of the farmer fish pond, and the second storage battery in the second power generation unit is electrically connected with the drain pump of the farmer fish pond.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the water retaining assembly is arranged at the junction of the T-shaped river channel, so that the effect of separating the branch river channel from the main river channel is achieved, when the pond pumps water, the water level of the branch river channel can be reduced, the water level in the branch river channel can drop from the water level of the main river channel, the electric telescopic rod is started according to the data detected by the water level drop detection unit, and the water flow of the main river channel can be led into the branch river channel by opening the water flow hole of the water retaining dam, so that the water quality of the branch river channel is improved by the water flow of the main river channel and the water flow of the branch river channel.

2. When the water level of the branch river channel rises and the water level fall detection units positioned at the two sides of the retaining dam detect that the water level of the branch river channel is higher than that of the main river channel, the water pump is started by sending a signal through the singlechip, so that the water flow of the branch river channel is quickly discharged into the main river channel, and then the discharged water flow is purified by the natural purification function of the main river channel.

3. According to the invention, through the design of the adjusting component, the situation that the soil on the river slope runs off under the scouring of water flow when the water outlet is placed on the river slope in the conventional water drainage process of farmers can be avoided.

4. According to the invention, through the design of the first power generation unit and the second power generation unit, the power generation can be performed by utilizing the impact force of water flow when the water flow of the main river enters the branch river, the water flow of the branch river enters the main river and the water flow of the pond enters the branch river, namely, the device can perform sewage purification by accelerating the water circulation of the T-shaped river and can perform power generation and energy conservation by utilizing the impact force generated by the water circulation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic top view of a dam;

FIG. 3 is a schematic top-down view of a protective housing;

FIG. 4 is a schematic view of a front cross-sectional structure of a dam;

FIG. 5 is a schematic view of the chute in a front cross-section;

FIG. 6 is a schematic top view of an adjustment assembly;

fig. 7 is a schematic elevational view in cross-section of the adjustment assembly.

In the figure: 1. a water-retaining dam; 2. a deflector aperture; 3. a mounting groove; 4. a second power generation unit; 41. a protective shell; 42. a water inlet pipe; 43. a second power generation roller; 44. a second generator; 45. a second storage battery; 5. a fitting groove; 6. a chute; 7. a water level drop detection unit; 71. a floating plate; 72. an infrared range finder; 73. a slide block; 74. a connecting rod; 8. a first power generation unit; 81. a protective shell; 82. a mounting frame; 83. a first power generation roller; 84. a first belt; 85. a drive plate; 86. a second belt; 87. a first generator; 88. a first storage battery; 9. an adjustment assembly; 91. a mounting rod; 92. a mounting plate; 93. a through hole; 94. a mounting hole; 95. a triangular support plate; 10. an electric telescopic rod; 11. a water-stop plate; 12. a water pump; 13. and a baffle.

Detailed Description

Various embodiments of the present invention are disclosed in the following drawings, in which details are set forth in the following description for the sake of clarity. However, it should be understood that these physical details should not be used to limit the invention. That is, in the component parts of the embodiments of the present invention, these physical details are not necessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Embodiment one:

referring to fig. 1, fig. 2 and fig. 5, the sewage purification treatment device for the aquatic environment engineering of the invention comprises a water retaining component, wherein the water retaining component comprises a water retaining dam 1 and a water level drop detection unit 7 arranged on the water retaining dam 1, the water retaining component is arranged at the junction of a T-shaped river channel, an adjusting component 9 is arranged at the water outlet of a pond, the power generation component comprises two groups of first power generation units 8 arranged on the water retaining component and a second power generation unit 4 arranged on the adjusting component 9, a diversion hole 2 is transversely formed in the side surface of the water retaining dam 1, a mounting groove 3 is formed in the center of the bottom of the inner wall of the diversion hole 2, an electric telescopic rod 10 is vertically and fixedly connected with a water stop plate 11 at the bottom of the inner wall of the mounting groove 3, a sliding block 5 matched with the water stop plate 11 is formed at the top of the electric telescopic rod 10, sliding blocks 6 are vertically and downwardly formed in two sides of the water retaining dam 1 close to the front surface and the back, the water level drop detection unit 7 comprises four floating plates 71, four infrared distance detectors 72 and a single chip microcomputer 72 arranged on the inner side of the adjusting component, the four infrared distance detectors 72 are fixedly connected with the four sliding blocks 71 and are fixedly connected with the top of the water stop plates 13 at the top of the water stop plate 1 through the four sliding blocks 71.

Above-mentioned technical scheme design, the juncture at T shape river course through the manger plate subassembly setting has reached the effect of cutting off branch river course and main river course, when the pond draws water, the water level in branch river course can take place to descend, the water level in branch river course descends and can make its water level liquid level with main river course appear the fall, the data that the rethread water level fall detecting element 7 detected starts electric telescopic handle 10, can make the rivers of main river course sink into branch river course through opening the water conservancy diversion hole 2 of retaining dam 1, thereby the rivers through main river course and the rivers of branch river course are collected and are improved the quality of branch river course.

Embodiment two:

referring to fig. 6 and 7, the adjusting assembly 9 includes a mounting plate 92 and a mounting rod 91, through holes 93 for the mounting rod 91 to penetrate are formed at four corners of the mounting plate 92, mounting holes 94 are formed in the surface of the mounting rod 91 from top to bottom, and two triangular support plates 95 for supporting the mounting plate 92 are hinged to the bottom of the inner wall of the mounting hole 94 through hinges.

The height of the mounting plate 92 on the mounting rod 91 can be adjusted to adapt to the sloping surface of a plurality of river channels, and meanwhile, the situation that the water outlet is placed on the river slope and the soil on the river slope runs off under the scouring of water flow when the current farmers drain water can be avoided.

Embodiment III:

referring to fig. 2, fig. 3, fig. 4, the first power generation unit 8 is including first battery 88, first generator 87, the protection shell 81 and install the driving disk 85 at the protection shell 81 inner wall, the protection shell 81 is close to inboard inner wall fixedly connected with mounting bracket 82, the inner wall of mounting bracket 82 has first power generation cylinder 83 through the bearing grafting, the surface that first power generation cylinder 83 is close to the end is connected with driving disk 85 transmission through first drive belt 84, driving disk 85 passes through second drive belt 86 transmission with the output shaft of first generator 87 and is connected, be close to the first power generation cylinder 83 in the main river course in the T-shaped river course and be located water conservancy diversion hole 2 top, be close to the first power generation cylinder 83 in the main river course in water conservancy diversion hole 2 below of the branch river course, two first generators 87 and first battery 88 are all installed at the top of retaining dam 1, water pump 12 is still installed at the top of retaining dam 1, the water inlet end of water pump 12 is located the branch river course inside of T-shaped river course through the water pipe, the water outlet end of water pump 12 is linked together through water pipe and driving disk 85, the inner wall top of the protection shell 81 that the main river course is close to the main river course, the second power generation unit 4 includes that the second generator 92 is installed at the second generator 44 and is equipped with the second generator 45 and is equipped with the second generator's side 41, the top is used for the water inlet housing 41 is connected with the second generator 41, the top is equipped with the top of the protection shell 41, the top is used for the water tank 41 is connected with the top of the protection shell 41, and is used for the water-up 41, the water tank is used for the power generator is used for the water-to the water-tank is used to be used to the water.

Through the design of first power generation unit 8 and second power generation unit 4, can make the rivers of main river course get into the river course, the rivers of the river course of branch get into main river course and the water of pond all can utilize the impact force of rivers to generate electricity when propping up the river course, the device can not only carry out sewage purification through accelerating the hydrologic cycle in T shape river course promptly, can also utilize the impact force that hydrologic cycle produced to generate electricity energy-conservation.

s2: then the retaining dam 1 is arranged at the junction of the T-shaped river channel, if the width of the junction is too narrow, the width needs to be widened, if the width of the junction is too wide, the retaining dam 1 needs to be arranged at the junction, the baffle plates 13 are fit into the butt joint grooves of the retaining dam 1, and then soil is filled between the baffle plates 13;

s3: then two first power generation units 8 are arranged on two sides of the retaining dam 1, the water inlet end and the water outlet end of a water pump 12 at the top of the retaining dam 1 are communicated with water pipes, the tail end of the water pipe connected with the water inlet end is positioned in a branch river channel, the water pipe communicated with the water outlet end is communicated with the inside of a protective shell 81 positioned on one side of a main river channel, then a first storage battery 88 is electrically connected with a first power generator 87 and the water pump 12, and then the water pump 12 is electrically connected with mains supply;

s4: the adjusting component 9 is arranged at the water outlet of the pond, and the mounting plate 92 is adjusted to a proper height by sliding the mounting plate 92 up and down and is supported by the triangular support plate 95;

s5: then, the second power generation unit 4 is mounted on the mounting plate 92, the water inlet pipe 42 in the second power generation unit 4 is communicated with the drain pump of the farm fish pond, and the second storage battery 45 in the second power generation unit 4 is electrically connected with the drain pump of the farm fish pond.

When the invention is used, when a pond in a farmer needs to pump water into the pond due to weather, the water level in the branch river channel is reduced, the floating plate 71 positioned in the branch river channel is lowered under the action of gravity, at the moment, data measured by the infrared range finder 72 positioned above the floating plate 71 and data measured by the infrared range finder 72 positioned at the side of the main river channel are automatically input into the singlechip, the singlechip judges whether the drop height meets the drop height requirement required by the first power generation unit 8 according to the difference of values, after the requirements are met, the singlechip sends out a signal to control the electric telescopic rod 10 to descend, the electric telescopic rod 10 descends to open the diversion hole 2 on the water retaining dam 1, so that the water flow in the main river channel enters the branch river channel through the diversion hole 2, the first power generation roller 83 positioned at one side of the branch river channel is impacted, the first power generation roller 87 in transmission connection with the first power generation roller is rotated, and the singlechip is stored in the first storage battery 88, when the water level height in the branch river channel is leveled with the water level height of the main river channel, namely, when the water level in the branch river channel is leveled with the main water level 11 is repeatedly started, and the water level of the main river channel is closed, and the water level is enabled to flow into the main river channel by the main water level 11;

when farmers need to pump out water flow in the pond due to weather, the drain pump of the farmers can enable the water flow in the pond to enter the protective shell 41 through the water inlet pipe 42 and impact the second power generation roller 43, so that the second power generator 44 can generate power, and the second power generator 44 is electrically connected with the second storage battery 45, and the second storage battery 45 is electrically connected with the drain pump, so that the drain cost of the farmers can be reduced, and the farmers are willing to perform water circulation of the pond and the branch river channel;

when the water level and liquid level of the branch river channel is higher than that of the main river channel, the same is detected by the water level fall detection unit 7, at the moment, the single chip sends out a signal to start the water pump 12, and the water pump 12 is started to enable the water flow of the branch river channel to flow to the main river channel and generate electricity through the first power generation unit 8 at one side of the main river channel;

the pond, the branch river and the main river flow mutually flow, so that water quality can be circulated benign, and the situation that the water quality is turbid and smelly to form vicious circle due to inconvenient river water circulation in the existing T-shaped river is avoided.

The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present invention, should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a sewage purification device for aquatic environment engineering which characterized in that includes:

the water retaining assembly comprises a water retaining dam (1) and a water level fall detection unit (7) arranged on the water retaining dam (1), and is arranged at the junction of a T-shaped river channel;

an adjusting component (9) which is arranged at the water outlet of the pond;

the power generation assembly comprises two groups of first power generation units (8) arranged on the water blocking assembly and a second power generation unit (4) arranged on the adjusting assembly (9);

the side of the retaining dam (1) is transversely provided with a diversion hole (2), the center of the bottom of the inner wall of the diversion hole (2) is provided with an installation groove (3), the bottom of the inner wall of the installation groove (3) is vertically and upwards fixedly connected with an electric telescopic rod (10), the top of the electric telescopic rod (10) is fixedly connected with a water stop plate (11), the top of the diversion hole (2) is provided with a fitting groove (5) matched with the water stop plate (11), and both sides of the retaining dam (1) close to the front surface and the back surface are vertically and downwards provided with sliding grooves (6);

the water level drop detection unit (7) comprises four floating plates (71), four infrared range finders (72) and an external singlechip, wherein the inner sides of the floating plates (71) are fixedly connected with sliding blocks (73) which are in sliding connection with the sliding grooves (6), and the four infrared range finders (72) are fixedly arranged at the top of the retaining dam (1) through connecting rods (74) and are positioned right above the four floating plates (71);

the adjusting component (9) comprises a mounting plate (92) and a mounting rod (91), through holes (93) for the mounting rod (91) to penetrate are formed in four corners of the mounting plate (92), mounting holes (94) are formed in the surface of the mounting rod (91) from top to bottom in a gap mode, and two triangular support plates (95) for supporting the mounting plate (92) are hinged to the bottom of the inner wall of the mounting hole (94) through hinges.

2. The apparatus for purifying and treating sewage for aquatic environment engineering according to claim 1, wherein: the first power generation unit (8) comprises a first storage battery (88), a first power generator (87), a protective shell (81) and a transmission disc (85) arranged on the inner wall of the protective shell (81), wherein the protective shell (81) is fixedly connected with a mounting frame (82) close to the inner wall of the inner side, a first power generation roller (83) is inserted into the inner wall of the mounting frame (82) through a bearing, the surface, close to the end, of the first power generation roller (83) is in transmission connection with the transmission disc (85) through a first transmission belt (84), and the transmission disc (85) is in transmission connection with an output shaft of the first power generator (87) through a second transmission belt (86).

3. The apparatus for purifying and treating sewage for aquatic environment engineering according to claim 2, wherein: the first power generation roller (83) close to the main river channel in the T-shaped river channel is located above the diversion hole (2), the first power generation roller (83) close to the branch river channel in the T-shaped river channel is located below the diversion hole (2), and the two first power generation devices (87) and the first storage battery (88) are both installed at the top of the retaining dam (1).

4. A sewage purification treatment apparatus for aquatic environment engineering according to claim 3, wherein: the water pump (12) is also installed at the top of retaining dam (1), the water inlet end of water pump (12) is located the branch river course of T shape river course inside through the water pipe, the play water end of water pump (12) is linked together with the protecting crust (81) inner wall top that is close to main river course through the water pipe.

5. The apparatus for purifying and treating sewage for aquatic environment engineering according to claim 1, wherein: the second power generation unit (4) is including installing second generator (44) at mounting panel (92) top, protective housing (41) and second battery (45), the top intercommunication of protective housing (41) has inlet tube (42) that are used for with peasant household drain pump intercommunication, second power generation cylinder (43) are transversely installed to the inside of protective housing (41), the one end of second power generation cylinder (43) is connected with the output shaft transmission of second generator (44), and one side that protective housing (41) are close to prop up river course central authorities is equipped with the opening that is used for the play water.

6. The apparatus for purifying and treating sewage for aquatic environment engineering according to claim 5, wherein: the four corners of the top of the retaining dam (1) are vertically and downwards provided with butt joint grooves, and the inner walls of the butt joint grooves are matched with baffle plates (13).

7. The installation method of the sewage purification treatment device for the aquatic environment engineering is characterized by comprising the following steps of:

s2: then the retaining dam (1) is arranged at the junction of the T-shaped river channel, if the width of the junction is too narrow, the width needs to be widened, if the width of the junction is too wide, the retaining dam (1) needs to be arranged at the junction, the baffle plates (13) are fit into the butt joint grooves of the retaining dam (1), and then soil is filled between the baffle plates (13);

s3: then two first power generation units (8) are arranged on two sides of the retaining dam (1), a water inlet end and a water outlet end of a water pump (12) at the top of the retaining dam (1) are communicated with water pipes, the tail end of the water pipe connected with the water inlet end is positioned in a branch river channel, the water pipe communicated with the water outlet end is communicated with the inside of a protective shell (81) positioned on one side of a main river channel, then a first storage battery (88) is electrically connected with the first power generator (87) and the water pump (12), and then the water pump (12) is electrically connected with mains supply;

s4: the adjusting component (9) is arranged at the water outlet of the pond, and the mounting plate (92) is adjusted to a proper height by sliding the mounting plate (92) up and down and is supported by the triangular supporting plate (95);

s5: and then the second power generation unit (4) is arranged on the mounting plate (92), the water inlet pipe (42) in the second power generation unit (4) is communicated with the drain pump of the farmer fish pond, and the second storage battery (45) in the second power generation unit (4) is electrically connected with the drain pump of the farmer fish pond.