A device and method for denitrification and algae inhibition by water-lifting aeration based on in-situ electrolytic hydrogen resolution

Abstract

The application discloses a water-lifting aeration denitrification and algae inhibition device and method based on in-situ electrolytic hydrogen resolution, which comprises a plurality of in-situ electrolytic hydrogen resolution devices distributed in a denitrification and algae inhibition device body, an aeration device arranged at the lower part of the denitrification and algae inhibition device body, and water-tight bins arranged at the top and the middle part of the outer periphery of the denitrification and algae inhibition device body; the in-situ electrolytic hydrogen resolution device comprises a water distribution chamber and an in-situ electrolytic hydrogen resolution area connected to an external circuit, the in-situ electrolytic hydrogen resolution area comprises an anode carbon rod and a plurality of stainless steel wire mesh cathode layers distributed on the outer periphery of the anode carbon rod, and an activated carbon layer is arranged above the stainless steel wire mesh cathode layers; the water-lifting aeration denitrification and algae inhibition device body is filled with water and oxygenated by the aeration device, the water in the in-situ electrolytic hydrogen resolution device is subjected to electrochemical reaction in the in-situ electrolytic hydrogen resolution area, hydrogen autotrophic denitrification is carried out, and efficient removal of nitrate nitrogen is realized. The in-situ electrolytic hydrogen resolution device is introduced, and the biological electrochemical reaction is combined, so that the efficient denitrification and algae inhibition effect is realized.

Description

Technical Field

[0001] This invention relates to the field of hydrogen autotrophic denitrification and eutrophication control technology, and in particular to a water pumping aeration denitrification and algae suppression device and method based on in-situ electrolytic hydrogen desorption. Background Technology

[0002] The problem of excessive nitrogen levels in reservoir water is becoming increasingly serious, especially nitrates (NO3). - -N) and nitrite (NO2) - The accumulation of nitrogen (N-C) often leads to eutrophication, causing algal blooms. This not only affects water quality but also threatens the balance of the ecosystem. Reservoir waters are generally nutrient-poor, with a low C / N ratio, posing a significant challenge to traditional denitrification technologies that rely on organic carbon sources. Achieving efficient nitrogen removal under low C / N conditions while controlling algal growth has become a key issue in reservoir water management.

[0003] Currently, traditional nitrogen removal methods mainly rely on biological denitrification and physicochemical methods. Traditional pumping aerators increase dissolved oxygen in water bodies by mechanically pumping water, effectively mitigating the obstruction of oxygen transfer caused by reservoir stratification. However, they have significant limitations in nitrogen removal and algae suppression, especially in treating water bodies with low C / N ratios. Furthermore, these methods typically require a high organic carbon source as an electron donor to effectively achieve denitrification. In water bodies with low organic carbon sources, the efficiency of these methods decreases significantly.

[0004] Therefore, it is urgent to provide a new technology that can efficiently remove nitrogen without relying on an external organic carbon source and under low C / N conditions. Summary of the Invention

[0005] To address the aforementioned deficiencies in existing technologies, the present invention aims to provide a water-lifting aeration denitrification and algae suppression device and method based on in-situ electrolytic hydrogen desorption. This device can efficiently remove nitrate nitrogen from low C / N reservoirs and lakes, and inhibit algae growth. It features significant denitrification efficiency, simple operation, and low energy consumption, and is applicable to the fields of hydrogen autotrophic denitrification and eutrophication control.

[0006] The present invention is achieved through the following technical solution.

[0007] In one aspect of the present invention, a water pumping aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen is provided, comprising a denitrification and algae suppression device body, wherein a plurality of in-situ electrolytic hydrogen devices are distributed within the denitrification and algae suppression device body; watertight chambers are respectively provided at the top and middle outer periphery of the denitrification and algae suppression device body, and an aeration device connected to an air supply pipe is provided at the bottom.

[0008] The in-situ electrolytic hydrogen desorption device includes a water distribution chamber and an in-situ electrolytic hydrogen desorption zone connected to an external circuit. The in-situ electrolytic hydrogen desorption zone includes an anode carbon rod and several stainless steel wire mesh cathode layers distributed around the outer periphery of the anode carbon rod. An activated carbon layer is provided above the stainless steel wire mesh cathode layers.

[0009] Aerobic bacteria are introduced into the denitrification and algae suppression device via an aeration device. The water then enters the in-situ electrochemical hydrogen desorption device and undergoes electrochemical reaction in the in-situ electrochemical hydrogen desorption zone, resulting in hydrogen autotrophic denitrification and achieving efficient removal of nitrate and nitrogen.

[0010] Preferably, the in-situ electrolytic hydrogen desorption units are connected in series from bottom to top.

[0011] Preferably, the main body of the denitrification and algae suppression device consists of a fixed cylinder and an ascending cylinder connected by a locking bolt.

[0012] Preferably, a second watertight chamber is provided at the top of the rising cylinder of the denitrification and algae suppression device body, and a first watertight chamber is provided on the outer periphery of the fixed cylinder.

[0013] Preferably, the end of the air supply pipe is connected to the aeration device via an air release pipe.

[0014] Preferably, the water distribution chamber is separated from the in-situ electrolytic hydrogen desorption zone, and the in-situ electrolytic hydrogen desorption zone is separated from the activated carbon layer by a water distribution baffle.

[0015] Preferably, the bottom of the water distribution chamber has a water inlet hole; the water distribution baffle is made of perforated plexiglass.

[0016] Preferably, the anode carbon rod is wrapped in an organic glass sleeve and placed in the center of the in-situ hydrogen electrolysis zone.

[0017] Preferably, the aeration device includes an aeration chamber and an air chamber. An overflow plate and a baffle plate are respectively fixed to the side wall of the denitrification and algae suppression device body at the top and bottom of the aeration chamber. A water seal plate is provided on the inner side of the overflow plate. Air inlets are opened on the side wall of the denitrification and algae suppression device body corresponding to the water seal plate and the baffle plate.

[0018] One aspect of the present invention provides a method for water-lifting aeration denitrification and algae suppression using the aforementioned in-situ electrolytic hydrogen desorption device, comprising:

[0019] Air is introduced into the aeration chamber of the denitrification and algae suppression device, and the low-nutrient water at the bottom of the reservoir is introduced into the denitrification and algae suppression device, with the air-to-water ratio controlled at 1:5 to 1:10.

[0020] Electricity is supplied to the anode carbon rod and stainless steel wire mesh cathode layer of the in-situ electrolytic hydrogen desorption device;

[0021] The influent sequentially enters the water distribution chamber of the first-stage denitrification and algae suppression device and the in-situ electrolytic hydrogen desorption device. The wastewater source enters the in-situ electrolytic hydrogen desorption zone and contacts the stainless steel wire mesh cathode layer, where it electrolyzes to generate hydrogen. The activated carbon layer above the stainless steel wire mesh cathode layer adsorbs the microorganisms of the wastewater source onto the activated carbon, thus adsorbing and intercepting pollutants.

[0022] The various in-situ electrolytic hydrogen desorption devices arranged at fixed intervals within the main body of the denitrification and algae suppression device sequentially release hydrogen gas in multiple stages, adsorb and intercept pollutants, and work together to deodorize and suppress algae.

[0023] The present invention, by adopting the above technical solution, has the following beneficial effects:

[0024] 1. This invention generates hydrogen through water electrolysis, utilizes hydrogen-autotrophic denitrifying bacteria for deep denitrification, and combines the characteristics of water stratification period with the use of a pumping aeration device to inhibit algae growth. It is suitable for solving the problems of excessive total nitrogen and eutrophication in various reservoir water sources with low C / N ratios, and has the advantages of high denitrification efficiency and significant algae suppression effect.

[0025] 2. Based on biofilm electrode technology, this invention uses stainless steel wire mesh as the cathode and carbon rod as the anode. The cathode generates hydrogen gas through water electrolysis. The hydrogen gas acts as an electron donor, promoting the reduction of nitrate to nitrogen gas (N2) by hydrogen autotrophic denitrifying bacteria, thereby achieving efficient denitrification. The electrochemical reaction directly interferes with algal cells through current and electric field, which also directly inhibits algal reproduction.

[0026] 3. Based on the characteristics of water source reservoirs, this invention utilizes a water pumping aeration system to break up the thermal stratification phenomenon in water source reservoirs, increase dissolved oxygen in the water, realize water exchange between isothermal, thermocline and variable temperature layers, avoid the release of pollutants from reservoir sediment due to excessively low dissolved oxygen in the lower water layer, and inhibit the growth and reproduction of bromine-producing algae, thereby achieving an aerobic denitrification environment while further inhibiting algal growth.

[0027] 4. Based on the characteristics of oligotrophic water sources and low conventional denitrification rates in reservoirs, this invention introduces activated carbon as both a biofilm carrier and a granular electrode. The microbial film growing on the surface of the activated carbon provides an environment for microbial attachment and growth, and its high specific surface area effectively absorbs nutrients such as nitrogen and phosphorus from the water while inhibiting algae growth. It also promotes nitrate reduction through electrochemical reactions, and the good conductivity of activated carbon compensates for the low conductivity and poor current utilization efficiency of the reservoir water.

[0028] 5. By configuring solar power, the system makes full use of renewable energy, making the entire denitrification process more environmentally friendly and economical, especially suitable for the long-term treatment of low C / N reservoirs and lakes. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, do not constitute an undue limitation of the invention. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the water-lifting aeration denitrification and algae suppression device and method based on in-situ electrolytic hydrogen desorption, as described in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1-Air supply pipe, 2-Denitrification and algae suppression device body, 3-Water seal plate, 4-Baffle plate, 5-Anchor block, 6-Air release pipe, 7-Aeration chamber, 8-Overflow plate, 9-Aeration device, 10-First watertight chamber, 11-Rising cylinder, 12-Locking bolt, 13-Assembled fixing bolt, 14-In-situ electrolytic hydrogen desorption device, 15-Second watertight chamber, 16-Anode carbon rod, 17-Activated carbon layer, 18-Upper water distribution baffle, 19-Stainless steel wire mesh cathode layer, 20-Lower water distribution baffle, 21-Drainage water distribution chamber. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0033] Example 1

[0034] like Figure 1 As shown in the figure, the in-situ electrolytic hydrogen desorption and aeration denitrification and algae suppression device provided in this embodiment includes a denitrification and algae suppression device body 2 installed on the anchoring pier 5. The denitrification and algae suppression device body 2 is composed of a fixed cylinder and a rising cylinder 11 connected by locking bolts 12. A second watertight chamber 15 is provided at the top of the rising cylinder 11, and a first watertight chamber 10 is provided on the outer periphery of the fixed cylinder. The first watertight chamber 10 is a hollow float to provide buoyancy and ensure that the water-lifting aerator is vertically suspended in the water, making the entire device more stable; the second watertight chamber 15 ensures that the water is discharged more evenly in all directions, resulting in a higher degree of diffusion and mixing of the reservoir water.

[0035] Inside the main body 2 of the denitrification and algae suppression device, there are in-situ electrolytic hydrogen desorption devices 14 distributed vertically. The in-situ electrolytic hydrogen desorption devices 14 are fixed to the inner wall of the main body 2 of the denitrification and algae suppression device 2 by assembly fixing bolts 13. The in-situ electrolytic hydrogen desorption devices 14 are connected in series from bottom to top. It also includes an aeration device 9 located on the lower outer periphery of the algae suppression device 2. The lower part of the aeration device 9 is connected to the air supply pipe 1, and the end of the air supply pipe 1 is provided with an air release pipe 6 connected to the aeration device 9.

[0036] The in-situ electrolytic hydrogen desorption device 14 includes a lower water distribution chamber 21 and an in-situ electrolytic hydrogen desorption zone connected to an external circuit. The bottom of the water inlet chamber is perforated. A lower water distribution baffle 20 was originally provided above the water distribution chamber 21. The in-situ electrolytic hydrogen desorption zone is located above the lower water distribution baffle 20 and includes vertically distributed anode carbon rods 16. The anode carbon rods 16 are wrapped with an organic glass sleeve and placed in the center of the in-situ electrolytic hydrogen desorption zone. Several stainless steel wire mesh cathode layers 19 are distributed around the anode carbon rods 16. Above the stainless steel wire mesh cathode layers 19 is an activated carbon layer 17 separated by an upper water distribution baffle 18.

[0037] In-situ electrochemical hydrogen degradation reaction is performed using stainless steel wire balls as the cathode and carbon rods as the anode. A water distribution baffle is installed to ensure uniform water distribution from the bottom and prevent upper activated carbon particles from falling into the lower layer. The water distribution baffle is formed of perforated plexiglass to prevent upper activated carbon particles from falling into the lower cathode.

[0038] The system can also collect sunlight through solar panels and convert it into electricity to power the water electrolysis device, continuously carrying out the hydrogen production reaction. This invention's device is used to break down the stratified structure of reservoir water, while simultaneously providing adequate dissolved oxygen and an electrochemical environment that synergistically inhibit algae growth.

[0039] This invention's in-situ electrolytic hydrogen desorption device forms an in-situ electrolytic hydrogen desorption zone. Based on biofilm electrode technology, stainless steel wire mesh serves as the cathode, and carbon rods as the anode. Hydrogen gas is generated by electrolyzing water at the cathode, and this hydrogen acts as an electron donor, promoting hydrogen autotrophic denitrification bacteria, thus achieving efficient nitrogen removal. The electrochemical reaction directly interferes with algal cells through current and electric field, directly inhibiting algal reproduction. Activated carbon is introduced as both a biofilm carrier and a granular electrode, providing a suitable environment for microbial attachment and growth due to its high specific surface area. Furthermore, the good conductivity of activated carbon compensates for the low conductivity and poor current utilization efficiency of reservoir water. The microbial film growing on the activated carbon surface not only effectively absorbs nutrients such as nitrogen and phosphorus from the water and inhibits algal growth, but also promotes nitrate reduction through electrochemical reactions. During operation, a small amount of iron is released from the stainless steel, which reacts with the activated carbon to form iron-carbon micro-electrolysis, accelerating electron transfer and creating a synergistic effect with hydrogen autotrophic denitrification.

[0040] During operation, a small amount of iron is released from the stainless steel wire mesh. This iron reacts with activated carbon to form iron-carbon micro-electrolysis, accelerating electron transfer and creating a synergistic effect with hydrogen autotrophic denitrification. Therefore, the entire system generates hydrogen through solar-powered electrolysis of the stainless steel wire mesh cathode, which, combined with microbial electrochemical reactions, achieves highly efficient denitrification and algae suppression.

[0041] Example 2

[0042] The second embodiment of the present invention is based on the previous embodiment, but differs in that it can better control the aeration effect for aeration devices with different structures, thereby improving adaptability.

[0043] Specifically, the bottom of the aeration device 9 is an aeration chamber 7. The aeration chamber 7 is equipped with an overflow plate 8 and a baffle plate 4 fixed to the side wall of the denitrification and algae suppression device body 2, respectively. The overflow plate 8 is equipped with a water seal plate 3 inside. The water seal plate 3 and the baffle plate 4 are respectively provided with air inlets on the side wall of the denitrification and algae suppression device body 2.

[0044] The aeration device 9 uses an overflow plate 8 and a baffle plate 4. A large amount of water with gas after aeration enters the denitrification and algae suppression device body 2 through the baffle plate 4. A small amount of gas enters the air chamber at the top of the aeration device 9. Some gas enters the denitrification and algae suppression device body 2 through the air inlet on the inner side of the water seal plate 3, further disturbing the water entering the denitrification and algae suppression device body 2.

[0045] The working mechanism of the in-situ electrolytic hydrogen desorption and aeration denitrification and algae suppression device of this invention is as follows:

[0046] Based on biofilm electrode technology, a stainless steel wire mesh layer serves as the cathode, and a carbon rod as the anode. The cathode generates hydrogen through water electrolysis. This hydrogen acts as an electron donor, promoting the reduction of nitrates to nitrogen (N2) by hydrogen-autotrophic denitrifying bacteria, thus achieving efficient denitrification. The electrochemical reaction directly interferes with algal cells through current and electric field, directly inhibiting algal reproduction. The addition of a pumping aeration system disrupts the reservoir's stratified structure, increasing dissolved oxygen and achieving aerobic denitrification while further inhibiting algal growth. Furthermore, this invention incorporates activated carbon as both a biofilm carrier and a granular electrode. The high specific surface area of ​​activated carbon provides an environment for microbial attachment and growth. The microbial film growing on the activated carbon surface not only effectively absorbs nutrients such as nitrogen and phosphorus from the water, inhibiting algal growth, but also promotes nitrate reduction through electrochemical reactions. Moreover, the good conductivity of activated carbon compensates for the low conductivity and poor current utilization efficiency of the reservoir water. During operation, a small amount of iron is released from the stainless steel. This iron reacts with activated carbon to form iron-carbon micro-electrolysis, accelerating electron transfer and creating a synergistic effect with hydrogen autotrophic denitrification. Therefore, the entire system generates hydrogen through solar-powered electrolysis of the stainless steel wire mesh cathode, which, combined with microbial electrochemical reactions, achieves highly efficient denitrification and algae suppression.

[0047] This invention further provides a method for nitrogen removal and algae suppression through water aeration based on in-situ electrolytic hydrogen desorption, comprising the following steps:

[0048] Step 1: Air is introduced into the aeration chamber 7 at the bottom of the denitrification and algae suppression device 2 through the air supply pipe 1. The low dissolved oxygen, nitrogen and pollutant oligotrophic water at the bottom of the reservoir is lifted into the denitrification and algae suppression device 2 by water and air. The amount of air supply also determines the amount of water inflow to achieve stable water intake. The air-water ratio is usually controlled at 1:5 to 1:10.

[0049] Step 2: Power is supplied to the anode carbon rod 16 and the stainless steel wire mesh cathode layer 19 of the in-situ electrolytic hydrogen desorption device 14, which can be powered by a solar energy system.

[0050] Step 3: The influent sequentially enters the water distribution chamber of the first-stage denitrification and algae suppression device 2 and the in-situ electrolytic hydrogen desorption device 14. The wastewater source enters the in-situ electrolytic hydrogen desorption zone and contacts the stainless steel wire mesh cathode layer 19, where it electrolyzes to generate hydrogen. The activated carbon layer 17 above the stainless steel wire mesh cathode layer 19 adsorbs the microorganisms of the wastewater source onto the activated carbon, further adsorbing and intercepting pollutants.

[0051] Hydrogen, as a green energy source, can provide electron donors for nitrate removal. The highly conductive carbon rods, serving as the anode and cathode, can continuously generate hydrogen. The activated carbon layer above the cathode can not only adsorb and intercept pollutants but also act as a carrier for aerobic denitrifying microorganisms. This provides a habitat for the growth and development of aerobic denitrifying microorganisms, greatly enhancing the aerobic denitrification reaction and accelerating the removal of pollutants such as N and P from the wastewater source water body.

[0052] Step 4: The in-situ electrochemical hydrogen desorption devices 14 arranged at fixed intervals in the main body 2 of the denitrification and algae suppression device sequentially perform multi-stage hydrogen evolution, adsorption and interception of pollutants, and synergistic deodorization and algae suppression.

[0053] To accommodate reservoirs of varying depths, the riser and the fixed cylinder can be adjusted according to the actual water depth, and the locking bolts can be fixed based on the adjusted height.

[0054] The effects of this invention will be further illustrated below by simulating a water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption in the laboratory.

[0055] Using an 8V voltage applied between the carbon rod and the stainless steel wire mesh, after 8 days of operation, the nitrate nitrogen concentration decreased from 1.44 mg / L to an undetectable level (<0.5 mg / L), and the maximum denitrification rate of the system reached 0.29 mg / L·d. -1The ammonia nitrogen concentration decreased from 0.61 mg / L to 0.04 mg / L, showing a significant removal efficiency. This indicates that ammonia nitrogen may first be oxidized to nitrate and then removed through a hydrogen autotrophic denitrification process. No nitrite accumulation was observed during the test, indicating that no intermediate nitrite product was generated during nitrate reduction; the system reaction directly converted nitrate to nitrogen gas. The total nitrogen (TN) removal rate reached 87.9%, and the TN concentration decreased from 1.75 mg / L to 0.21 mg / L, meeting the Chinese Class II surface water quality standard (≤0.5 mg / L). COD... Mn The concentration decreased by 55.2% in the system, indicating that the anodic oxidation in the system also played a role in the degradation of organic matter.

[0056] In this embodiment, after 12 days of operational data monitoring, it was found that the device had excellent nitrogen removal efficiency, and also reduced COD levels. Mn The system also exhibits a synergistic effect in the removal of pollutants such as Alicycliphilus (46.3%) and Acidovorax (26.5%), and high-throughput data analysis revealed a significant increase in the abundance of microorganisms growing in the activated carbon layer. Furthermore, the system demonstrates a significant algae-suppressing effect, with an efficiency of up to 70%, and a marked improvement in water transparency.

[0057] This invention can efficiently remove nitrate nitrogen from reservoirs and lakes with low C / N ratios and inhibit algal growth. It has advantages such as significant denitrification effect, simple operation, and low energy consumption, and is applicable to the fields of hydrogen autotrophic denitrification and eutrophication control.

[0058] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A water-lifting aeration denitrification and algae suppression device based on in-situ electrochemical hydrogen desorption, characterized in that, The device includes a denitrification and algae suppression device body (2), which contains several in-situ electrolytic hydrogen desorption devices (14) connected in series from bottom to top. The top and middle outer periphery of the denitrification and algae suppression device body (2) are respectively equipped with watertight chambers, and the lower part is equipped with an aeration device (9) connected to the air supply pipe (1). The in-situ electrolytic hydrogen device (14) includes a water distribution chamber (21) and an in-situ electrolytic hydrogen zone connected to an external circuit. The in-situ electrolytic hydrogen zone includes an anode carbon rod (16) and several stainless steel wire mesh cathode layers (19) distributed around the outer periphery of the anode carbon rod (16). An activated carbon layer (17) is provided above the stainless steel wire mesh cathode layer (19). The water distribution chamber (21) and the in-situ electrolytic hydrogen zone, and the in-situ electrolytic hydrogen zone and the activated carbon layer (17) are separated by a perforated water distribution baffle. The bottom water source of the reservoir is lifted to the denitrification and algae suppression device body (2) by the aeration device (9). The aerobic bacteria in the denitrification and algae suppression device body (2) are oxygenated. The water body entering the in-situ electro-hydrogen desorption device (14) undergoes electrochemical reaction in the in-situ electro-hydrogen desorption zone. The sewage source water body enters the in-situ electro-hydrogen desorption zone and contacts the stainless steel wire mesh cathode layer (19) to generate hydrogen gas through electrolysis. The activated carbon layer (17) adsorbs the microorganisms of the sewage source water body onto the activated carbon layer (17), further adsorbing and intercepting pollutants, and carrying out hydrogen autotrophic denitrification to achieve efficient removal of nitrate nitrogen.

2. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption as described in claim 1, characterized in that, The main body (2) of the denitrification and algae suppression device is composed of a fixed cylinder and an ascending cylinder (11) connected by a locking bolt (12).

3. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption as described in claim 2, characterized in that, A second watertight chamber (15) is provided at the top of the rising cylinder (11) of the denitrification and algae suppression device body (2), and a first watertight chamber (10) is provided on the outer periphery of the fixed cylinder.

4. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption as described in claim 1, characterized in that, The end of the air supply pipe (1) is connected to the aeration device (9) through the air release pipe (6).

5. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption according to claim 1, characterized in that, The bottom of the water distribution chamber (21) has a water inlet hole; the water distribution baffle (18) is made of perforated plexiglass.

6. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption according to claim 1, characterized in that, The anode carbon rod (16) is wrapped in an organic glass sleeve and placed in the center of the in-situ hydrogen electrolysis zone.

7. The water-lifting aeration denitrification and algae suppression device based on in-situ electrolytic hydrogen desorption according to claim 1, characterized in that, The aeration device (9) includes an aeration chamber (7) and an air chamber. The aeration chamber (7) is provided with an overflow plate (8) and a baffle plate (4) fixed on the side wall of the denitrification and algae suppression device body (2) respectively. A water seal plate (3) is provided on the inner side of the overflow plate (8). Air inlets are opened on the side wall of the denitrification and algae suppression device body (2) corresponding to the water seal plate (3) and the baffle plate (4).

8. A method for water-lifting aeration nitrogen removal and algae suppression using a water-lifting aeration device based on in-situ electrolytic hydrogen desorption as described in any one of claims 1-7, characterized in that, include: Air is introduced into the aeration chamber of the denitrification and algae suppression device, and the low-nutrient water at the bottom of the reservoir is introduced into the denitrification and algae suppression device, with the air-to-water ratio controlled at 1:5 to 1:

10. Electricity is supplied to the anode carbon rod and stainless steel wire mesh cathode layer of the in-situ electrolytic hydrogen desorption device; The influent sequentially enters the diversion and distribution chamber of the first-stage denitrification and algae suppression device and the in-situ electrolytic hydrogen desorption device. The wastewater source enters the in-situ electrolytic hydrogen desorption zone and contacts the stainless steel wire mesh cathode layer, where it electrolyzes to generate hydrogen. The activated carbon layer above the stainless steel wire mesh cathode layer adsorbs the microorganisms of the wastewater source onto the activated carbon, thus adsorbing and intercepting pollutants. The various in-situ electrolytic hydrogen desorption devices arranged at fixed intervals within the main body of the denitrification and algae suppression device sequentially release hydrogen gas in multiple stages, adsorb and intercept pollutants, and work together to deodorize and suppress algae.

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