Treatment method of black and odorous water body

Abstract

The invention relates to the technical field of water quality treatment, and discloses a black and odorous water body treatment method which comprises the following steps: S1, placing and preparing a mixed injection mechanism; s2, stirring the water body to promote the water body to form upwelling flow; s3, adding a light-oxygen activation material into the water body; and S4, digesting pollutants in the water body, and activating indigenous microorganisms in the bottom mud and the water body. The technical scheme provided by the invention can solve the problems of unstable water quality, high investment cost, easy black and odorous return, possible secondary environmental pollution and the like in the existing black and odorous water body treatment technology.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a method for treating black and smelly water. Background Art

[0002] With the rapid advancement of industrialization, urbanization and informatization, the problem of damaged water bodies in rivers and lakes, especially black and smelly water bodies, has become increasingly serious. Black and smelly water bodies are characterized by high organic matter concentration, poor transparency and low dissolved oxygen, which has caused great damage to the urban landscape and seriously damaged the quality of life and physical and mental health of citizens.

[0003] The formation of black and smelly water bodies involves a series of complex biological reactions, which are closely related to factors such as oxygen consumption in the water, endogenous pollution, decreased water mobility and increased water temperature. Relevant plans have been introduced to promote governance work, and are committed to increasing the proportion of good water quality in surface water and nearshore waters, and building beautiful rivers, lakes and bays.

[0004] The existing black and odorous water treatment technologies mainly use dredging and microbial treatment. However, although these two methods can improve water quality to a certain extent, the water quality is generally unstable and it is difficult to maintain good water quality for a long time. At the same time, these methods have high investment costs and put great pressure on local finances. In addition, the water body after treatment is prone to black and smelly again, making it difficult to sustain the treatment effect. What's more serious is that it may also cause secondary environmental pollution problems and cause new damage to the ecological environment. Summary of the invention

[0005] The present invention aims to provide a method for treating black and odorous water bodies to solve the problems existing in the existing black and odorous water body treatment technology, such as unstable water quality, high investment cost, easy return to black and odorous, and possible secondary environmental pollution.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a method for treating black and smelly water, comprising the following steps: S1: Placement and preparation of the mixing and injection mechanism; S2: Stirring the water body to form an upwelling flow; S3: adding photo-oxygen activated materials to the water body; S4: Eliminate pollutants in water bodies and activate indigenous microorganisms in sediments and water bodies.

[0007] The beneficial effects of this scheme are as follows: when purifying black and smelly water bodies, the mixing and spraying mechanism is first placed in the water body, and the water body is stirred by the mixing and spraying mechanism, so that the water body forms an upwelling flow, changes the stratification state of the water body, and gradually lifts the underlying anaerobic or facultative anoxic water body to the water surface for mass transfer and exchange with the air, changes the original stratified oxygen gradient, increases and homogenizes the dissolved oxygen content of the water body, increases or restores the activity of water body microorganisms, improves the oxygen content of the water body and the redox reaction of the sediment, thereby effectively activating the water body and increasing the fluidity of the water body. Then, the photo-oxidation activation material is sprayed into the water body through the mixing and spraying mechanism, and under natural light conditions, the photolysis and enzyme catalysis are integrated to enable the water body to efficiently absorb solar photons, and through the electron transfer process between the redox enzyme and the photosensitizer, highly active substances and a large number of OH free radicals are formed, thereby eliminating pollutants in the water body, activating active enzymes and indigenous microorganisms in the sediment and water body, and greatly improving the self-purification ability of the water body. In addition, the oxygen storage material in the photo-oxygen activated material can enter the water bottom with the flow of the water body and gradually release oxygen-containing substances at the bottom of the water, thereby further improving the oxygen content of the bottom mud and the underlying water body and significantly improving the water purification effect.

[0008] Compared with the existing technology, this technical solution has the following advantages: 1. Water quality stability: This technical solution effectively changes the stratification state of water bodies, increases the dissolved oxygen content in water bodies and evenly distributes it, increases the activity of microorganisms in water bodies, improves the oxygen content in water bodies and the redox reaction of sediments, through the synergistic effect of stirring and photo-oxygen activated materials, thereby establishing a stable ecological environment for the water body, enabling the water quality to remain in a good state for a long time and reducing the impact of water quality fluctuations on the ecosystem.

[0009] 2. Low investment cost: It avoids the high investment cost of methods such as dredging and silt removal, and reduces local fiscal pressure.

[0010] 3. Not easy to turn black and smelly again: This technical solution fundamentally solves the problem of water pollution. By promoting the decomposition of pollutants in the water, improving the oxygen content of the water, inhibiting the growth and metabolism of anaerobic microorganisms, and reducing the production of odor-causing substances. In addition, the continuous and stable water activation process gradually restores the balance of the water ecosystem and enhances the self-purification ability of the water, thereby effectively preventing the water from turning black and smelly again and ensuring the long-term effect of water treatment.

[0011] 4. No secondary environmental pollution: In the process of water treatment, the photo-oxidation activated materials used in this technical solution will not produce new harmful substances or cause secondary pollution to the environment. This not only meets environmental protection requirements, but also protects the surrounding ecological environment, which is of great significance for maintaining ecological balance and sustainable development.

[0012] 5. Reconstruction of ecosystem: Through light sources, submerged vegetation is induced to repair rapidly and the underwater forest ecosystem is reconstructed. Photosynthesis increases dissolved oxygen, creates favorable conditions for microorganisms to degrade pollutants and improves the surrounding environment; plant roots absorb nitrogen and phosphorus to inhibit the growth and reproduction of algae; provide habitats for microorganisms and prey on floating algae; stems, leaves, and roots can slow down the flow of water and filter out precipitated impurities; release allelopathic substances to inhibit algae, effectively degrade pollutants and improve water transparency, further enhance the self-purification capacity of water bodies, and promote a virtuous cycle of the ecological environment.

[0013] Furthermore, the mixing and spraying mechanism in S1 includes a mixing unit and a material spraying unit. The mixing unit is used to stir the water body to cause the water body to form an upwelling flow, and the material spraying unit is used to spray the photo-oxidation activated material into the water body.

[0014] The beneficial effects of this solution are as follows: due to the setting of the mixing unit, this technical solution can promote the formation of upwelling flow in the water body, change the stratification state of the water body, so that the underlying anaerobic or anaerobic water body is gradually lifted to the water surface for mass transfer exchange with the air, change the original stratified oxygen gradient, increase and homogenize the dissolved oxygen content of the water body, increase or restore the activity of microorganisms in the water body, improve the oxygen content of the water body and the redox reaction of the sediment, thereby effectively activating the water body and increasing the fluidity of the water body.

[0015] Due to the setting of the material injection unit, the technical solution can evenly disperse the photo-oxidation activated material into the water body, increase its contact area with pollutants, and improve the reaction efficiency, thereby more effectively promoting the decomposition of pollutants in the water body, achieving the purification and activation regeneration of the water body, and improving the overall quality and ecological function of the water body.

[0016] Further, in S2, a mixing unit is used to stir the water body. The mixing unit includes a power part and a rotating disk. The power part can drive the rotating disk to rotate. A number of rotating rods are evenly distributed on the circumference of the rotating disk. A paddle blade is installed at the free end of each rotating rod. When the paddle blade rotates with the rotating disk, the water body can be driven to flow, causing the water body to form an upwelling flow.

[0017] The beneficial effects of this solution are as follows: This technical solution drives the rotating disk to rotate through the power part, and the blades rotate synchronously with the rotating disk, which prompts the water body to form an upward and outward flow field, that is, upwelling flow, which effectively changes the stratification state of the water body. The water body that was originally in the underlying anaerobic or anaerobic state gradually rises to the water surface and conducts sufficient mass transfer exchange with the air. This measure changes the original stratified oxygen gradient, significantly improves and homogenizes the dissolved oxygen content of the water body, increases or restores the activity of microorganisms in the water body, improves the oxygen content of the water body and the progress of the redox reaction of the sediment. Thereby effectively and efficiently activating the water body, significantly increasing the fluidity of the water body, laying a solid foundation for the improvement and stabilization of the ecological environment of the water body, and is conducive to promoting the improvement of the self-purification capacity of the water body and the benign cycle of the ecosystem.

[0018] Further, in S3, the photo-oxygen activated material is added into the water body through the material injection unit, the material injection unit comprises a material storage part and an injection part, the photo-oxygen activated material is stored in the material storage part, and the injection part can mix the photo-oxygen activated material with water and then inject it into the water body.

[0019] The beneficial effects of this solution are as follows: Due to the setting of the material storage part, this technical solution can safely and stably store the photo-oxygen activated material, ensuring that its quality and performance before use are not affected, and providing reliable material guarantee for water treatment. Due to the setting of the injection part, this technical solution mixes the photo-oxygen activated material with water and then sprays it, which can make the material more evenly dispersed in the water body, increase the contact area with pollutants, and improve the reaction efficiency, thereby more effectively promoting the decomposition and transformation of pollutants in the water body, further improving the purification effect of the water body, creating more favorable conditions for the activation and regeneration of the water body, and helping the recovery and stable development of the water ecosystem.

[0020] Furthermore, the rotation speed of the power member is 0-20RPM.

[0021] The beneficial effects of this solution are as follows: the rotation speed of the power part in this technical solution is 0-20RPM. When the rotation speed of the power part reaches 15-20RPM, the natural frequency of the water body's own vibration and the frequency of the periodic force exerted on the water body by the blades during rotation will gradually approach each other, thereby inducing resonance. Once resonance occurs, the water body will be able to absorb more energy, and its vibration amplitude will increase significantly, thereby significantly improving the mixing effect of the water body. This effect allows substances at different levels and in different areas of the water body to blend more fully with each other, effectively promoting the uniform distribution of dissolved oxygen and photo-oxygen activated materials in the water body, creating more favorable conditions for the activation and regeneration process of the water body, and helping to more efficiently achieve goals such as water purification and ecological restoration.

[0022] Furthermore, each blade is composed of a flow-pushing plate, an upflow plate and a baffle. The flow-pushing plate is detachably connected to the rotating rod, the upflow plate is obliquely installed at the bottom of the flow-pushing plate, and the baffle is fixedly connected between the upflow plate and the flow-pushing plate and close to one side of the rotating disk.

[0023] The beneficial effects of this solution are as follows: In this technical solution, the ingenious arrangement of the upflow plate, the flow-pushing plate and the baffle plate plays an important role. When the blades rotate, upwelling can be efficiently generated. This process can effectively lift the water at the bottom to the surface, and then push the flow outward, thereby forming a large-scale and efficient water circulation system. In this circulation process, dissolved oxygen can be fully supplemented and homogenized, thereby effectively improving the original anaerobic environment of the water body and creating good conditions for the survival and activities of various organisms in the water body.

[0024] At the same time, the design of detachable connection between the propeller plate and the rotating rod is very advantageous. This design makes the operation extremely convenient when the propeller blade is damaged or needs to be replaced and adjusted according to different water conditions. The propeller blade can be easily replaced without complicated tools and tedious procedures, which greatly improves the maintainability and adaptability of the equipment.

[0025] Furthermore, the flow-pushing plate includes a first connecting section and a second connecting section connected in sequence, and the angle between the first connecting section and the second connecting section is 145°-155°; the shape of the rotating rod is adapted to the shape of the flow-pushing plate, and the angle between the upflow plate and the flow-pushing plate is 95°-100°.

[0026] The beneficial effect of this solution is as follows: in this technical solution, the angle between the first connecting section and the second connecting section is set to 145°-155°. This design enables the blades to push the water outward more effectively during rotation. In this way, the activation area of ​​the water body is significantly increased, allowing more water to participate in the circulation and activation process, and improving the fluidity of the entire water body and the uniformity of oxygen content distribution.

[0027] The angle between the upflow plate and the push plate is set at 95°-100°. When the blades rotate, the bottom water can be lifted to the surface at a more optimized angle. This specific angle ensures the efficiency and stability of the upflow, allowing the anaerobic water at the bottom to quickly contact the air and exchange oxygen, further improving the overall oxygen content of the water, creating more favorable conditions for the survival of various organisms in the water and the improvement of the self-purification capacity of the water.

[0028] Compared with setting the blades in a straight plate shape, this technical solution has the following advantages: (1) For straight blades, the main direction of force is horizontal, and the stirring of the water in the vertical direction is relatively weak. However, the upflow plate in the present technical solution is in the horizontal direction. When the blade rotates, the upflow plate can effectively flip the lower water upward. This is because the upflow plate and the thrust plate are at an angle of 95°-100°. This inclined structure allows the upflow plate to lift the lower water like a shovel during rotation, thereby breaking the vertical stratification of the water. Compared with the straight blades, the thrust plates of the present technical solution can cover a wider area of ​​the water body when rotating. The straight blades mainly generate water flow on both sides of a plane when rotating, while the special shape of the thrust plates can make the water flow in a more complex direction, and can involve a larger range of surrounding water in the mixing process, thereby changing the stratification of the water body and significantly increasing the dissolved oxygen content of the water body.

[0029] (2) The push plate can push the material sprayed on the surface of the water in the horizontal direction, so that the material is dispersed to a wider area. At the same time, the horizontal part (upflow plate) can flip the lower water and material upward, bring the material to different depths, and avoid the accumulation of material on the surface of the water. The straight-plate paddle mainly pushes the material in the horizontal direction, which easily causes the material to be concentrated on one plane and cannot disperse the material to different depths of the water well. The technical solution uses the synergistic effect of the upflow plate and the push plate to fully mix the material and the water in both the vertical and horizontal directions. This multi-dimensional mixing method is more uniform than the single horizontal mixing method of the straight-plate paddle, which is conducive to the full contact between the material and the pollutants in the water, thereby improving the efficiency of water purification.

[0030] Furthermore, the photo-oxygen activated material consists of a photosensitizer, an oxidoreductase and an oxygen storage material.

[0031] The beneficial effects of this solution are as follows: Due to the addition of photosensitizers and oxidoreductases, this technical solution triggers the photolysis and enzyme-catalyzed photoenzyme reaction system under natural light conditions, and efficiently absorbs solar photons. Through the electron transfer of oxidoreductases and photosensitizers, highly active substances and a large number of OH free radicals can be formed, which can then eliminate pollutants in the water body, activate active enzymes and indigenous microorganisms in the sediment and water body, and greatly improve the self-purification ability of the water body. At the same time, after the oxygen storage material is sprayed out by the injection part, it can enter the bottom of the water with the water under the stirring and circulation of the blades. The oxygen storage material is brought to the bottom of the water body and gradually releases oxygen-containing substances, thereby further improving the oxygen content of the sediment and the underlying water body, and significantly improving the purification effect of the water body.

[0032] Furthermore, the injection part includes a submersible pump, and a jet tube is installed at the water outlet of the submersible pump. The jet tube can suck the photo-oxidation activated material stored in the storage part into the jet tube and mix it with water. A diverter disk is installed at the free end of the jet tube, and a receiving cavity is provided inside the diverter disk. The jet tube is connected to the receiving cavity. A plurality of nozzles are evenly distributed on the circumference of the outer side surface of the diverter disk, and the material in the receiving cavity can be sprayed into the water body through the nozzles.

[0033] The beneficial effects of this solution are as follows: In this technical solution, the design of the injection part is ingenious and efficient. The submersible pump is connected to the jet tube at the water outlet, and the pressure difference generated by it is used to suck the photo-oxygen activated material in the storage part into the jet tube and mix it with water, so as to achieve the ready-to-use of the material. On the one hand, it ensures that the photo-oxygen activated material can fully contact with the water body and play its role in the shortest time, greatly improving the timeliness and pertinence of the treatment. There is no need to perform complicated mixing operations in advance, which not only saves time costs, but also reduces manpower investment, and can effectively prevent the mixed liquid from losing activity due to long-term storage. On the other hand, the diverter plate at the free end of the jet tube and the several nozzles evenly distributed in the circumference can spray the mixed material into the water body very evenly, making the treatment effect more comprehensive and balanced, avoiding the situation of excessive or low local concentration, and thus effectively improving the overall effectiveness of water treatment.

[0034] Furthermore, one end of the No. 1 discharge pipe close to the jet pipe is a bell mouth.

[0035] The beneficial effects of this solution are as follows: The beneficial effects of this solution are as follows: In this technical solution, by setting the end of the No. 1 discharge pipe close to the jet tube as a bell mouth, the shape of the bell mouth makes the opening of the end connected to the jet tube larger. When the photo-oxygen activated material is sucked into the jet tube, the shape of the bell mouth helps to disperse the photo-oxygen activated material in the water. Due to the larger opening of the bell mouth, the photo-oxygen activated material can contact with water in a wider area after entering the jet tube. This makes it easier for the photo-oxygen activated material to be entrained by the water flow and quickly dispersed in the water, thereby promoting the mixing of the photo-oxygen activated material and water. In contrast, if the end of the discharge pipe connected to the jet tube is a straight pipe, the photo-oxygen activated material may be concentrated in a smaller area to enter the jet tube, resulting in uneven mixing.

[0036] The bell-shaped design allows the photo-activated material to be mixed with water in a more uniform manner after entering the jet tube. Because after the photo-activated material enters the jet tube from a larger opening, it will be impacted and stirred by the water flow, making it easier to diffuse in the water. This uniform mixing is very important for some processes that require precise control of reaction conditions, and can improve the efficiency and quality of the reaction. In addition, the bell-shaped design is less likely to cause accumulation of photo-activated materials, reducing the possibility of blockage, and is easy to clean and maintain when blocked, while straight tubes are prone to accumulation and are more troublesome to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a flow chart of a method for treating a black and smelly water body in Example 1 of the present invention; Figure 2 It is a structural schematic diagram of the mixing injection mechanism in the present invention; Figure 3 It is a schematic diagram of the structure of the jet tube and the No. 1 feed tube in the invention; Figure 4 It is a three-dimensional diagram of the blade in the invention. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods: The figure marks in the drawings of the specification include: shell 1, No. 1 silo 2, No. 1 discharge pipe 3, submersible pump 4, jet tube 5, diverter plate 6, nozzle 7, water inlet hole 8, first cylindrical section 9, tapering section 10, second cylindrical section 11, expansion section 12, third cylindrical section 13, No. 1 one-way valve 14, No. 2 one-way valve 15, power part 16, rotating disk 17, power part mounting frame 18, sealing cover 19, driving pulley 20, driven pulley 21, belt 22, rotating rod 23, paddle 24, push flow plate 25, riser plate 26, baffle 27, first connecting section 28, second connecting section 29.

[0039] Example 1 like Figure 1 As shown, a method for treating a black and smelly water body comprises the following steps: S1: Placement and preparation of the mixing and injection mechanism; specifically, Figure 2 As shown, the mixing and spraying mechanism includes a housing 1, a mixing unit and a material spraying unit. The mixing unit is first adjusted to an upward direction, and then the mixing and spraying mechanism is placed in the water body; like Figure 2 As shown, the material injection unit includes a material storage portion and an injection portion.

[0040] like Figure 2 As shown, the material storage part includes a No. 1 silo 2, which is annular and installed inside the housing 1 by bolts. The No. 1 silo 2 stores photo-oxidation activated materials, which are composed of photosensitizers, oxidoreductases and oxygen storage materials. The top of the No. 1 silo 2 is connected to a No. 1 feed pipe, which is used to add photo-oxidation activated materials into the No. 1 silo 2. The bottom of the No. 1 silo 2 is connected to a No. 1 discharge pipe 3, which is used to transport the photo-oxidation activated materials to the injection part.

[0041] like Figure 2 and Figure 3As shown, the injection part includes a submersible pump 4 and a diverter plate 6. The submersible pump 4 is located in the annular ring of the No. 1 silo 2 and is installed on the No. 1 silo 2 by bolts. The water outlet of the submersible pump 4 is connected with a jet pipe 5, which plays the role of conveying water and mixed materials. The jet pipe 5 is composed of a first cylindrical section 9, a tapered section 10, a second cylindrical section 11, an expansion section 12 and a third cylindrical section 13 that are connected in sequence, wherein the first cylindrical section 9 is connected to the water outlet of the submersible pump 4, and a No. 1 check valve 14 is installed on the first cylindrical section 9 to prevent water from flowing back. The upper end of the No. 1 discharge pipe 3 is connected to the second cylindrical section 11, and a No. 2 check valve 15 is installed on the No. 1 discharge pipe 3 to control the conveying direction and flow rate of the material. The third cylindrical section 13 is mounted on the diverter plate 6, and a receiving cavity is provided inside the diverter plate 6. The third cylindrical section 13 is connected to the receiving cavity. A plurality of nozzles 7 are evenly installed on the circumference of the outer side of the diverter plate 6. The material in the receiving cavity can be sprayed into the water body through the nozzles 7. The right end of the No. 1 discharge pipe 3 is a bell mouth. The setting of the bell mouth is conducive to the smooth inhalation and mixing of the material, and at the same time, it can prevent the No. 1 discharge pipe 3 from being blocked. A plurality of water inlet holes 8 are opened at the lower end of the shell 1, so that the water in the water body can smoothly enter the shell 1, and be pumped into the jet pipe 5 through the action of the submersible pump 4 to mix with the photo-oxidation activated material.

[0042] like Figure 2 and Figure 4As shown, the mixing unit includes a power member 16 and a rotating disk 17; a power member mounting frame 18 is welded in the housing 1 above the No. 1 silo 2, and the power member 16 is mounted on the power member mounting frame 18 by bolts. A sealing cover 19 is welded on the housing 1 above the power member mounting frame 18, and the output shaft of the power member 16 passes through the sealing cover 19 and is rotatably connected with the sealing cover 19. A driving pulley 20 is mounted on the upper end of the output shaft of the power member 16, and the driving pulley 20 is located above the sealing cover 19. The rotating disk 17 is in a "T" shape, and the rotating disk 17 is rotatably arranged on the outer side of the jet tube 5. The lower end of the rotating disk 17 is sealed and rotatably arranged on the sealing cover 19, and the upper end of the rotating disk 17 extends to the top of the sealing cover 19. A driven pulley 21 is mounted on the rotating disk 17 above the sealing cover 19, and a belt 22 is sleeved on the driving pulley 20 and the driven pulley 21. The power member 16 can drive the rotating disk 17 to rotate through the belt 22, and the speed of the power member 16 is 0-20RPM. Three rotating rods 23 are welded on the outer surface of the upper end of the rotating disk 17. The rotating rods 23 are evenly distributed along the circumference of the rotating disk 17. Each rotating rod 23 is equipped with a paddle 24, which can drive the water body to flow and form an upward and outward flow field. Each paddle 24 is composed of a flow-pushing plate 25, a flow-rising plate 26 and a baffle 27. The flow-pushing plate 25 is installed at the end of the rotating rod 23 by bolts. The flow-pushing plate 25 includes a first connecting section 28 and a second connecting section 29 connected in sequence. The two are integrally formed and processed. The angle between the first connecting section 28 and the second connecting section 29 is 145°-155°, and the shape of the rotating rod 23 is adapted to the shape of the flow-pushing plate 25. The flow-rising plate 26 is welded obliquely at the bottom of the flow-pushing plate 25, and the angle between the flow-rising plate 26 and the flow-pushing plate 25 is 95°-100°. The baffle 27 is welded at the right end of the flow-rising plate 26 and the flow-pushing plate 25. In this embodiment, the angle between the first connecting section 28 and the second connecting section 29 is 150°, and the angle between the upflow plate 26 and the push flow plate 25 is 95°; the power part 16 uses a waterproof servo motor of model shj-swd60-450-48, and the speed of the power part 16 is 18RPM.

[0043] S2: Stirring the water body to cause the water body to form an upwelling current; specifically, the power member 16 drives the rotating disk 17 to rotate, and the paddles 24 rotate synchronously with the rotating disk 17, causing the water body to form an upward and outward flow field, that is, an upwelling current. The formation of the upwelling current changes the stratification state of the water body, so that the water body that was originally in the underlying anaerobic or facultative anoxic state gradually rises to the water surface and fully exchanges mass transfer with the air. This measure changes the original stratified oxygen gradient, significantly improves and homogenizes the dissolved oxygen content of the water body, increases or restores the activity of microorganisms in the water body, and improves the oxygen content of the water body and the progress of the redox reaction of the sediment. Thereby effectively activating the water body and significantly increasing the fluidity of the water body; S3: adding the photo-oxidation activated material to the water body; specifically, spraying the photo-oxidation activated material into the water body through the material spraying unit, so that the photo-oxidation activated material is fully mixed with water and then sprayed into the water body, and the photo-oxidation activated material is evenly dispersed in the water body and fully contacts with the pollutants in the water body; S4: Eliminate pollutants in water bodies and activate indigenous microorganisms in sediments and water bodies; First, the water body is stirred through the mixing unit, which changes the stratification state of the water body, makes the water body circulate, increases the dissolved oxygen content of the water body, increases or restores the activity of water microorganisms, improves the oxygen content of the water body and the progress of sediment redox reactions. Then, the photo-oxygen activation material is in contact with the water body. Under natural light conditions, photolysis and enzyme catalysis are effectively integrated, so that the water body absorbs solar photons efficiently. Through the electron transfer process between the redox enzyme and the photosensitizer, highly active substances and a large number of OH free radicals are formed, thereby eliminating pollutants in the water body, activating active enzymes and indigenous microorganisms in the sediment and water body, and greatly improving the self-purification ability of the water body. In addition, the oxygen storage material can enter the bottom of the water with the flow of the water body, and gradually release oxygen-containing substances at the bottom of the water, thereby further improving the oxygen content of the sediment and the underlying water body, and significantly improving the purification effect of the water body.

[0044] Example 2 On the basis of Example 1, the material storage unit also includes a No. 2 silo, which is arranged outside the shell 1 and located on the shore of the water body. A No. 2 discharge pipe is installed at the bottom of the No. 2 silo, and a No. 3 check valve is installed on the No. 2 discharge pipe. A three-way pipe is connected to the first cylindrical section 9, and one end of the three-way pipe is connected to the No. 2 discharge pipe, and the other end of the three-way pipe is connected to the No. 1 discharge pipe 3. Due to the setting of the No. 2 silo, this technical solution provides stronger protection and flexibility for the feeding of the entire system. When the materials in the No. 1 silo 2 are gradually used up during the operation, the No. 3 check valve can be opened conveniently. At this time, the No. 2 silo can quickly play its key role as a supplementary silo, and seamlessly connect to continue to stably feed the system. This process not only ensures the continuity of the water purification operation, avoids interruptions caused by material shortages, but also greatly improves work efficiency.

[0045] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for treating black and smelly water, characterized in that: The following steps are involved: S1: Placement and preparation of the mixing and injection mechanism; S2: Stirring the water body to form an upwelling flow; S3: adding photo-oxygen activated materials to the water body; S4: Eliminate pollutants in water bodies and activate indigenous microorganisms in sediments and water bodies.

2. The method for treating black and smelly water according to claim 1, characterized in that: The mixing and spraying mechanism in S1 includes a mixing unit and a material spraying unit. The mixing unit is used to stir the water body to cause the water body to form an upwelling flow, and the material spraying unit is used to spray the photo-oxidation activated material into the water body.

3. The method for treating black and smelly water according to claim 2, characterized in that: In S2, a mixing unit is used to stir the water body. The mixing unit includes a power part and a rotating disk. The power part can drive the rotating disk to rotate. A number of rotating rods are evenly distributed on the circumference of the rotating disk. A paddle blade is installed at the free end of each rotating rod. When the paddle blade rotates with the rotating disk, the water body can be driven to flow, causing the water body to form an upwelling flow.

4. The method for treating black and smelly water according to claim 3, characterized in that: In S3, the photo-oxygen activated material is added into the water body through the material injection unit, the material injection unit comprises a material storage part and an injection part, the photo-oxygen activated material is stored in the material storage part, and the injection part can mix the photo-oxygen activated material with water and then inject it into the water body.

5. The method for treating black and smelly water according to claim 3, characterized in that: The speed of the power part is 0-20RPM.

6. The method for treating black and smelly water according to claim 4, characterized in that: Each blade is composed of a flow-pushing plate, a flow-rising plate and a baffle. The flow-pushing plate is detachably connected to the rotating rod. The flow-rising plate is obliquely installed at the bottom of the flow-pushing plate. The baffle is fixedly connected between the flow-rising plate and the flow-pushing plate and close to one side of the rotating disk.

7. The method for treating black and smelly water according to claim 6, characterized in that: The flow-pushing plate comprises a first connecting section and a second connecting section which are connected in sequence, and the angle between the first connecting section and the second connecting section is 145°-155°; the shape of the rotating rod is adapted to the shape of the flow-pushing plate, and the angle between the rising flow plate and the flow-pushing plate is 95°-100°.

8. The method for treating black and smelly water according to claim 7, characterized in that: The photo-oxygen activated material is composed of a photosensitizer, an oxidoreductase and an oxygen storage material.

9. The method for treating black and smelly water according to claim 8, characterized in that: The injection part includes a submersible pump, and a jet tube is installed at the water outlet of the submersible pump. The jet tube can suck the photo-oxidation activated material stored in the storage part into the jet tube and mix it with water. A diverter disk is installed at the free end of the jet tube, and a receiving cavity is provided inside the diverter disk. The jet tube is connected with the receiving cavity. A plurality of nozzles are evenly distributed on the circumference of the outer side of the diverter disk, and the material in the receiving cavity can be sprayed into the water body through the nozzles.

10. A method for treating black and smelly water according to claim 9, characterized in that: The end of the No. 1 discharge pipe close to the jet pipe is a bell mouth.

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