Water body remediation system and method

Abstract

The invention discloses a water body remediation system and method. The remediation system comprises a gas and medicine supply assembly, a composite supply pipe and an ecological floating island, wherein one end of the composite supply pipe is connected with the gas and medicine supply assembly, and the other end of the composite supply pipe extends into a water body; the medicament release assembly comprises a first box body, at least one air bag arranged in the first box body, a driving disc rotationally arranged on the side wall of the first box body, and at least one shifting rod arranged on the driving disc and used for pushing the air bag, an impeller is arranged in the air supply pipe located at a shaft rod of the driving disc, and the impeller is connected with the shaft rod of the driving disc. According to the water body remediation system, the gas medicine supply assembly is synchronously driven by utilizing gas conveying power of the aeration pump, so that medicine powder can be conveyed while water body aeration is performed along with the composite supply pipe, and a small amount of medicine powder can be added for multiple times.

Description

A water remediation system and method Technical Field

[0001] This invention relates to the field of water remediation technology, specifically to a water remediation system and method. Background Technology

[0002] Aquaculture wastewater refers to water produced during aquaculture processes, resulting from uneaten feed, excrement from cultured organisms, drug residues, and the metabolic activities of aquatic microorganisms, which requires external discharge or recirculation treatment. Essentially, it is a product of the imbalance in the material cycle of the aquaculture system, characterized by high nitrogen, high phosphorus, and high organic matter loads. Major pollutants include ammonia nitrogen (NH3-N) and nitrite (NO2). - Nitrogen (N), total phosphorus (TP), chemical oxygen demand (COD), and suspended solids (SS) are all pollutants. Studies have shown that aquatic animals can only utilize 25%–50% of the nitrogen and phosphorus nutrients in their feed. The unabsorbed portion is mineralized by microorganisms and converted into water pollutants, which is one of the important sources of agricultural non-point source pollution.

[0003] In the remediation of aquaculture water bodies, the combined application of physical and biological methods has become the mainstream technical approach for water purification and treatment. Its core lies in constructing a four-stage synergistic remediation system of "physical exposure—chemical oxidation—biodegradation—ecological restoration." However, currently, there is no system that can combine aeration and bacterial powder to achieve this remediation method. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a water remediation system and method.

[0005] The technical solution of the present invention is: a water remediation system, comprising an air-powder supply assembly, a composite supply pipe connected at one end to the air-powder supply assembly and extending into the water body at the other end, and an ecological floating island for mounting the composite supply pipe; the air-powder supply assembly consists of a drug release component and a micro-aeration component, the composite supply pipe consists of an air supply pipe and a plurality of drug supply pipes spirally wrapped around the air supply pipe; the air supply pipe is connected to the micro-aeration component, the drug supply pipe is connected to the drug release component, the drug release component includes a first housing, at least one airbag disposed in the first housing, a drive disk rotatably disposed on the side wall of the first housing, and at least one lever disposed on the drive disk for pushing the airbag, an impeller is disposed in the air supply pipe located at the shaft of the drive disk, the impeller is connected to the shaft of the drive disk, and the airbag has a powder inlet for unidirectional powder intake, a supplementary air inlet for unidirectional air intake, and a delivery port for unidirectional powder delivery connected to the drug supply pipe.

[0006] Furthermore, each of the air supply pipes is provided with at least one dosing pipe connected to the air supply pipe. The dosing pipe is provided with a sliding door that can be opened or closed. The sliding door is connected to a groove provided on one side wall of the dosing pipe through an elastic element. The air supply pipe is provided with a wind resistance plate that is fixedly connected to the sliding door.

[0007] Explanation: By using components such as sliding doors and air baffles, the opening size of the dosing pipe can be dynamically controlled by the thrust of the airflow in the air supply pipe, thereby controlling the release of the chemical powder. At the same time, these components do not require the use of electric components, have low requirements for the operating environment, and this control method allows the chemical powder to be added in small amounts and multiple times synchronously with aeration, saving chemical powder usage and avoiding excessive chemical powder from burdening the water body.

[0008] Furthermore, the air resistance plates of each drug supply pipe are staggered with each other.

[0009] Explanation: By distributing air baffles at multiple locations in the air supply pipe, the gas flow rate can be maintained, preventing the rear air baffle from failing to activate or having an unsatisfactory activation effect due to two air baffles being too close together. On the other hand, it allows the powder to be mixed in stages in the air supply pipe, improving the mixing efficiency of the powder and gas and enhancing its delivery effect.

[0010] Furthermore, the wind-facing surface of the wind-resistant plate is provided with a frustum-shaped guide block, and the sidewall of the guide block is provided with several spiral grooves.

[0011] Explanation: The frustum-shaped guide block can compensate for the obstruction of the wind resistance plate on the mixing of powder and gas. The frustum-shaped structure of the guide block allows the powder and gas to pass through each spiral groove, forming a micro cyclone to improve the flow rate and mixing effect, thereby improving the conveying efficiency.

[0012] Furthermore, the drug supply pipe is located on the ecological floating island, and the end of the air supply pipe passes through the ecological floating island and extends into the water. The drug release assembly is equipped with two air bladders, which are respectively located on both sides of the first box. The drive plate is located between the two air bladders, and the two levers are located at the eccentric point of the drive plate. The two levers are centrally symmetrical about the center of the drive plate.

[0013] Note: Installing the supply pipe only above ground can reduce the impact of moisture in the supply pipe on the flowability of the powder. By setting two air bladders in the agent release component, different powders can be loaded in the two air bladders to meet the various needs of water body remediation, thereby improving the effect of water body remediation.

[0014] Furthermore, the micro-aeration component consists of a second housing and an aeration pump disposed within the second housing. The aeration pump is connected to the air supply pipe, and the end of the air supply pipe is provided with a columnar microporous aeration head.

[0015] Description: The micro-aeration component provides gas delivery to the air supply pipe. With the use of the columnar microporous aeration head, the powder and gas are separated and added to the water. Some of the gas is discharged through the micropores, forming micro-nano bubbles with a diameter of 1–100 μm. The specific surface area is tens of times larger than that of traditional bubbles, and the oxygen mass transfer efficiency can reach more than 85%, which is 3–5 times that of traditional aeration. The bubbles can stay in the water for tens of minutes to several hours, achieving continuous oxygen supply to deep water, rapidly increasing dissolved oxygen to 6–8 mg / L, and activating aerobic microorganisms for efficient degradation of COD, ammonia nitrogen, and nitrite.

[0016] Furthermore, the drug release assembly is equipped with a grinder for assisting in grinding the drug powder. The discharge port of the grinder is connected to the powder inlet through a pipe, and a vibrator is also provided at the powder inlet.

[0017] Explanation: The grinding mill ensures that the added powder is thoroughly ground, guaranteeing its fluidity when mixed with gas. The vibrator ensures that the powder passes through the pipeline quickly and efficiently into the powder inlet, improving conveying efficiency.

[0018] Furthermore, the ecological floating island has a snap-fit ​​for the composite supply pipe, and the ecological floating island is planted with water-purifying plants, which are any one or more of water hyacinth, water hyacinth, and duckweed. The ecological floating island is also filled with a planting substrate with a thickness of 1-2 cm, which is a mixture of straw and rice husks in a mass ratio of 3-5:2.

[0019] Note: Planting water-purifying plants on ecological floating islands can enhance the water body restoration effect in conjunction with ecological restoration. Floating aquatic plants such as water hyacinth, water hyacinth, and duckweed play a significant role in water purification, especially suitable for eutrophic or polluted still and slow-flowing water environments. They effectively improve water quality through root absorption, biosorption, and microbial synergy. However, they are not limited to the water-purifying plants listed above. Appropriate selection can be made according to actual use and local plant conditions. At the same time, by using fibers such as straw and rice husks to absorb particulate matter in the water, the C / N ratio of the water can be increased, thereby enhancing the effect of biofilm in reducing ammonia nitrogen and nitrite nitrogen in the water.

[0020] This invention also provides a water remediation method, based on the above system, comprising the following steps: S1, oxygen or air is delivered to the air supply pipe of the composite supply pipe through a micro-aeration component, and the driving force generated by the impeller of the drive disc through the air supply pipe is used to rotate the drive disc, and then the air bag is periodically squeezed by a lever to deliver the powder to the drug supply pipe of the composite supply pipe; wherein, in the drug release component, the solid-to-gas ratio of the powder to the gas is 100~200kg / kg, and the gas flow velocity into the drug supply pipe is 2~3 m / s; S2, through the connection between the drug supply pipe and the air supply pipe, oxygen or air is mixed with the powder in the composite supply pipe, and the powder is delivered to the water body for water oxygenation and aeration and water remediation through the gas flow in the air supply pipe.

[0021] Furthermore, the powder is a compound microbial powder, which, by mass fraction, comprises 10-15 parts of Bacillus subtilis, 3-8 parts of photosynthetic bacteria, and 10-20 parts of zeolite powder.

[0022] Note: Compound microbial powders, such as Bacillus subtilis + photosynthetic bacteria, with zeolite powder as the carrier, can achieve bioremediation of water bodies. Additionally, remediation reagents can be selected according to specific circumstances. For example, potassium persulfate compound salt disinfectant powder has good flowability and no caking, making it suitable for the remediation of hospital wastewater and aquaculture water. High ammonia-absorbing zeolite powder is specifically designed for aquaculture water purification, with concentrated particle size and excellent flowability, and can be directly connected to pneumatic conveying systems. However, it is not limited to the powders listed above. Other powders can be used according to actual usage and local water conditions, provided the powder meets the following characteristics: particle size <100μm, angle of repose <35°, moisture content <3%, no caking, and antistatic properties.

[0023] The beneficial effects of the present invention are: (1) The water body restoration system of the present invention utilizes the gas delivery power of the aeration pump to synchronously drive the gas-powder supply assembly, so that the powder can be delivered along the composite supply pipe while the water body is aerated, thereby realizing the addition of powder in small amounts and multiple times, saving the use of powder and avoiding excessive powder from causing a burden on the water body.

[0024] (2) The water body restoration method of the present invention is based on the water body restoration system, which is green and environmentally friendly. Through the supply of air and powder mixture, the efficacy of the powder can be fully exerted, thereby significantly improving the effect of water body restoration. Furthermore, through the use of micro-aeration components, some gas is discharged through micropores to form micro-nano bubbles with a diameter of 1–100 μm. The specific surface area is increased by tens of times compared with traditional bubbles, and the oxygen mass transfer efficiency can reach more than 85%, which is 3–5 times that of traditional aeration. The bubbles stay in the water for tens of minutes to several hours, thereby achieving continuous oxygen supply to deep water bodies. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of the water remediation system of Embodiment 1 of the present invention; Figure 2 is a schematic diagram of the internal structure of the gas and drug supply assembly of the water remediation system of Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the connection relationship of the composite supply pipe of the water remediation system of Embodiment 1 of the present invention; Figure 4 is a schematic diagram of the structure of the composite supply pipe of the water remediation system of Embodiment 1 of the present invention; Figure 5 is a schematic diagram of the overall structure of the water remediation system of Embodiment 2 of the present invention; Figure 6 is a schematic diagram of the internal structure of the gas and drug supply assembly of the water remediation system of Embodiment 2 of the present invention; Figure 7 is a schematic diagram of the connection relationship of the composite supply pipe of the water remediation system of Embodiment 2 of the present invention; Figure 8 is a schematic diagram of the structure of the composite supply pipe of the water remediation system of Embodiment 2 of the present invention; Figure 9 is a schematic diagram of the overall structure of the water remediation system of Embodiment 3 of the present invention; Figure 10 is a schematic diagram of the internal structure of the gas and drug supply assembly of the water remediation system of Embodiment 3 of the present invention; Figure 11 is a schematic diagram of the connection relationship of the composite supply pipe of the water remediation system of Embodiment 3 of the present invention; Figure 12 Figure 13 is a schematic diagram of the composite supply pipe structure of the water remediation system of Embodiment 3 of the present invention; Figure 14 is a schematic diagram of the overall structure of the water remediation system of Embodiment 4 of the present invention; Figure 15 is a schematic diagram of the drive disc structure of the gas and drug supply assembly of the water remediation system of Embodiment 4 of the present invention; Figure 16 is a partial top view of the connection relationship between the gas supply pipe and the drug supply pipe (drug dosing pipe) of the present invention; Figure 17 is a schematic diagram of the wind resistance plate structure of Embodiment 5 of the present invention. Intended meaning; wherein, 1-gas and drug supply assembly, 11-drug release component, 12-micro aeration component, 13-first box, 14-airbag, 15-drive disc, 16-lever, 17-impeller, 18-second box, 19-aeration pump, 2-composite supply pipe, 21-air supply pipe, 22-drug supply pipe, 23-dosing pipe, 24-sliding door, 25-wind resistance plate, 26-guide block, 3-ecological floating island, 4-column microporous aeration head, 5-grinding machine, 6-vibrator. Detailed Implementation

[0026] The present invention will now be described in more detail with reference to specific embodiments, so as to better demonstrate the advantages of the present invention.

[0027] Example 1: As shown in Figure 1, a water remediation system includes an air-chemical supply assembly 1, a composite supply pipe 2 connected at one end to the air-chemical supply assembly 1 and extending into the water body at the other end, and an ecological floating island 3 for mounting the composite supply pipe 2; as shown in Figures 2-4, the air-chemical supply assembly 1 consists of a chemical release component 11 and a micro-aeration component 12, and the composite supply pipe 2 consists of an air supply pipe 21 and a chemical supply pipe 22 spirally wound around the air supply pipe 21; the air supply pipe 21 is connected to the micro-aeration component 12, and the chemical supply pipe 22... Pipe 22 is connected to the drug release assembly 11, as shown in Figure 16. The air supply pipe 21 has three drug delivery pipes 23 connected to the air supply pipe 21. Each drug delivery pipe 23 has a sliding door 24 that can be slidably opened or closed, and the sliding door 24 is slidably and sealingly connected to the drug delivery pipe 23. The sliding door 24 is connected to a groove on one side wall of the drug delivery pipe 23 through an elastic element. In this embodiment, a commercially available spring is used as the elastic element. The air supply pipe 21 has a wind resistance plate 25 that is fixedly connected to the sliding door 24. It should be noted that the wind resistance plate 25 leaves a gap of 1 mm between itself and the pipe wall. The gap is cm. In this embodiment, a circular windbreak plate is used. The plate material is PVC, and the straight-line distance between two adjacent dosing pipes 23 is 15cm. The dosing pipe 22 is located on the ecological floating island. The end of the air supply pipe 21 passes through the opening in the middle of the ecological floating island 3 and extends into the water and is connected to a columnar microporous aeration head 4. The lower part of the cylindrical body of the columnar microporous aeration head 4 is provided with several micro-nano pores with a diameter of 100μm. A rotating shaft is provided at the inner central axis. The upper and lower ends of the rotating shaft are rotatably connected to the top and bottom surfaces of the cylinder, respectively. A scraper is provided at the position corresponding to the micro-nano pores on the rotating shaft. An air wheel is provided at the upper part of the rotating shaft. The connection between the air supply pipe 21 and the cylinder is located above the air wheel to drive the rotation of the air wheel. A one-way valve is provided at the connection between the air supply pipe 21 and the cylinder to prevent the micro-nano pores from being blocked and affecting the use of the columnar microporous aeration head 4. It should be noted that the air wheel has the same structure as the impeller 17. As shown in Figures 2, 3, and 15, the drug release assembly 11 includes a first housing 13, an airbag 14 disposed within the first housing 13, a drive disk 15 rotatably disposed on the side wall of the first housing 13, and a lever 16 disposed on the drive disk 15 for pushing the airbag 14. This embodiment adopts a design of dual drive disks 15, that is, two drive disks 15 are respectively disposed on the inner wall of the first housing 13 on opposite sides and connected by a shaft. A lever 16 is provided on each of the two drive disks 15. An impeller 17 is provided in the air supply pipe 21 located at the shaft of the drive disk 15. The impeller 17 is connected to the shaft of the drive disk 15. The airbag 14 has a powder inlet for unidirectional powder intake, a supplementary air inlet for unidirectional air intake, and a delivery port for unidirectional powder delivery connected to the drug supply pipe 22. To achieve the unidirectional function, a commercially available one-way valve or other valve components that meet the unidirectional inlet / outlet function can be used.As shown in Figure 2, the micro-aeration component 12 consists of a second housing 18 and an aeration pump 19 disposed within the second housing 18. The aeration pump 19 is connected to the air supply pipe 21 and is commercially available. The ecological floating island 3 has a buckle for attaching the composite supply pipe 2; the buckle is a commercially available pipe buckle. The ecological floating island 3 is planted with water-purifying plants, specifically duckweed. A 1.5 cm thick planting substrate is also laid on the ecological floating island 3, consisting of a mixture of straw and rice husks at a mass ratio of 2:1.

[0028] The water remediation method using the above system includes the following steps: S1, oxygen or air is delivered to the air supply pipe 21 of the composite supply pipe 2 through the micro-aeration component 12. The driving force generated by the impeller 17 of the drive disc 15 through the air supply pipe 21 causes the drive disc 15 to rotate. Under the rotation of the drive disc 15, the lever 16 rotates eccentrically. Then, the lever 16 periodically squeezes the air bladder 14, and the air bladder 14 reciprocates under the elastic self-recovery, so that the powder is delivered to the drug supply pipe 22 of the composite supply pipe 2. During this period, powder can be added through the powder inlet, and gas can be added through the air inlet. The gas can be air or ozone, etc., selected according to the actual operation. In the agent release component, the solid-gas ratio of powder to gas is 160 kg / kg, and the flow rate of gas entering the drug supply pipe 22 is 3. m / s; the powder is a compound microbial powder, which, by mass fraction, comprises 12 parts Bacillus subtilis, 5 parts photosynthetic bacteria, and 15 parts zeolite powder, or a high-quality compound microbial powder can be directly selected; S2, through the connection of the drug supply pipe 22 and the air supply pipe 21, oxygen or air is mixed with the powder in the compound supply pipe 2, and the powder is delivered to the water body for water aeration and water body remediation through the gas flow of the air supply pipe 21; wherein, the working principle of the drug addition pipe 23 is: oxygen is introduced into the air supply pipe 21 When air or gas flows through the wind resistance plate 25, it pushes the wind resistance plate 25 to the right as shown in Figure 16, thereby causing it to move the sliding door 24 through the connecting rod to open the outlet at the lower end of the dosing pipe 23, so that the powder flows from the dosing pipe 22 into the air supply pipe 21; the working principle of the columnar microporous aeration head 4 is as follows: the gas carrying the powder is sent into the cylinder through the air supply pipe 21, and the rotation of the air wheel is driven by the kinetic energy of the gas, so that the rotating shaft rotates and the scraper periodically scrapes the micro-nano pores, thereby avoiding the blockage of the micro-nano pores and affecting the use of the columnar microporous aeration head 4.

[0029] Example 2: This example differs from Example 1 in that, as shown in Figures 5-8, the drug release assembly 11 is provided with two airbags 14, and the two airbags 14 are respectively located on both sides of the first housing 13. The drive plate is located between the two airbags 14, and the two levers 16 are both located at the eccentric point of the drive plate 15. Specifically, the levers 16 are 3 cm away from the circumferential edge, and the two levers 16 are centrally symmetrical about the center of the drive plate 15.

[0030] Example 3: This example differs from Example 1 in that, as shown in Figures 9-12, the drug supply tube 22 has two paths, and one end of each drug supply tube 22 is unidirectionally connected to the airbag 14. Specifically, one drug supply tube 22 enters the airbag 14 unidirectionally, and the other drug supply tube 22 exits the airbag 14 unidirectionally. The other ends of the two drug supply tubes 22 are connected to form a loop. At the same time, a commercially available dust concentration sensor can be added inside the airbag 14 according to actual usage requirements to monitor the concentration of the drug powder and adjust the amount of drug powder added. It should be noted that a commercially available one-way valve or other valve fittings that meet the one-way inlet / outlet function can be used to achieve the one-way function.

[0031] Example 4: The difference between this example and Example 1 is that, as shown in Figures 13 and 14, the drug release component 11 is equipped with a grinder 5 for assisting in grinding the drug powder. The discharge port of the grinder 5 is connected to the powder inlet through a pipe, and a vibrator 6 is also provided at the powder inlet. It should be noted that the grinder 5 and the vibrator 6 are commercially available.

[0032] Example 5: The difference between this example and Example 1 is that, as shown in Figure 17, the windward side of the wind resistance plate 25 is provided with a frustum-shaped guide block 26, and the side wall of the guide block 26 is provided with several spiral grooves. Under the action of the spiral grooves, the airflow flowing through the guide block 26 forms a swirling flow, which accelerates the passage through the gap between the wind resistance plate 25 and the pipe wall.

[0033] Example 6: The difference between this example and Example 1 is that the ecological floating island 3 is covered with a planting substrate with a thickness of 1-2 cm. The planting substrate is made of straw and rice husks mixed in a mass ratio of 3:2.

[0034] Example 7: The difference between this example and Example 1 is that the ecological floating island 3 is covered with a planting substrate with a thickness of 1-2 cm. The planting substrate is made of straw and rice husks mixed in a mass ratio of 5:2.

[0035] Example 8: The difference between this example and Example 1 is that in the drug release assembly, the solid-to-gas ratio of the drug powder to the gas is 100 kg / kg, and the gas flow rate into the drug supply pipe 22 is 2 m / s.

[0036] Example 9: The difference between this example and Example 1 is that in the drug release assembly, the solid-to-gas ratio of the drug powder to the gas is 200 kg / kg, and the gas flow rate into the drug supply pipe 22 is 3 m / s.

[0037] Example 10: This example differs from Example 1 in that, by mass fraction, the composite microbial powder includes 10 parts of Bacillus subtilis, 3 parts of photosynthetic bacteria, and 10 parts of zeolite powder.

[0038] Example 11: This example differs from Example 1 in that, by mass fraction, the composite microbial powder includes 15 parts of Bacillus subtilis, 8 parts of photosynthetic bacteria, and 20 parts of zeolite powder.

Claims

1. A water remediation system, characterized in that, The system includes an air-powder supply assembly (1), a composite supply pipe (2) connected at one end to the air-powder supply assembly (1) and extending into the water body at the other end, and an ecological floating island (3) for mounting the composite supply pipe (2). The air-powder supply assembly (1) consists of a drug release component (11) and a micro-aeration component (12). The composite supply pipe (2) consists of an air supply pipe (21) and multiple drug supply pipes (22) spirally wrapped around the air supply pipe (21). The air supply pipe (21) is connected to the micro-aeration component (12), and the drug supply pipes (22) are connected to the drug release component (11). The device includes a first housing (13), at least one airbag (14) disposed in the first housing (13), a drive disk (15) rotatably disposed on the side wall of the first housing (13), and at least one lever (16) disposed on the drive disk (15) for pushing the airbag (14). An impeller (17) is provided in the air supply pipe (21) located at the shaft of the drive disk (15). The impeller (17) is connected to the shaft of the drive disk (15). The airbag (14) has a powder inlet for unidirectional powder feeding, a supplementary air inlet for unidirectional air feeding, and a conveying port for unidirectional powder feeding connected to the drug supply pipe (22).

2. The water remediation system according to claim 1, characterized in that, Each of the drug supply pipes (22) is provided with at least one drug dosing pipe (23) connected to the air supply pipe (21). The drug dosing pipe (23) is provided with a sliding door (24) that can be slidably opened or closed. The sliding door (24) is connected to a groove provided on one side wall of the drug dosing pipe (23) through an elastic element. The air supply pipe (21) is provided with a wind resistance plate (25) that is fixedly connected to the sliding door (24).

3. The water remediation system according to claim 2, characterized in that, The air resistance plates (25) of each drug supply pipe (22) are staggered with each other.

4. The water remediation system according to claim 2, characterized in that, The wind-facing surface of the wind-resistant plate (25) is provided with a frustum-shaped guide block (26), and the side wall of the guide block (26) is provided with several spiral grooves.

5. A water remediation system according to claim 1, characterized in that, The air supply pipe (21) is located on the ecological floating island, and the ecological floating island (3) has a buckle for snapping the composite supply pipe (2). The end of the air supply pipe (21) passes through the ecological floating island (3) and extends into the water. The drug release component (11) is provided with two air bags (14), and the two air bags (14) are respectively located on both sides of the first box (13). The drive plate is located between the two air bags (14). The two levers (16) are both located at the eccentric point of the drive plate (15), and the two levers (16) are centrally symmetrical about the center of the drive plate (15).

6. The water remediation system according to claim 1, characterized in that, The micro-aeration component (12) consists of a second housing (18) and an aeration pump (19) disposed in the second housing (18). The aeration pump (19) is connected to the air supply pipe (21), and the end of the air supply pipe (21) is provided with a columnar microporous aeration head (4).

7. A water remediation system according to claim 1, characterized in that, The drug release assembly (11) is equipped with a grinder (5) for assisting in grinding the drug powder. The outlet of the grinder (5) is connected to the powder inlet through a pipe, and a vibrator (6) is also provided at the powder inlet.

8. A water remediation system according to claim 1, characterized in that, The ecological floating island (3) has a buckle for snapping onto the composite supply pipe (2), and the ecological floating island (3) is planted with water-purifying plants, which are any one or more of water hyacinth, water hyacinth, and duckweed. The ecological floating island (3) is filled with a planting substrate with a thickness of 1-2 cm, which is made of straw and rice husks mixed in a mass ratio of 3-5:

2.

9. A method for water body remediation, characterized in that, The system according to any one of claims 1 to 7 includes the following steps: S1, oxygen or air is delivered to the air supply pipe (21) of the composite supply pipe (2) through the micro-aeration component (12), and the driving force generated by the impeller (17) of the drive disc (15) through the air supply pipe (21) is used to rotate the drive disc (15), and then the air bag (14) is periodically squeezed by the lever (16) to deliver the medicine powder to the medicine supply pipe (22) of the composite supply pipe (2); S2, through the connection between the medicine supply pipe (22) and the air supply pipe (21), oxygen or air is mixed with medicine powder in the composite supply pipe (2), and the medicine powder is delivered to the water body for water oxygenation and aeration and water body repair through the gas flow of the air supply pipe (21).

10. A water remediation method according to claim 9, characterized in that, The powder is a compound microbial powder, which, by mass fraction, comprises 10-15 parts of Bacillus subtilis, 3-8 parts of photosynthetic bacteria, and 10-20 parts of zeolite powder.

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