Straw filler water purification device and sewage treatment method thereof

Abstract

The invention discloses a straw filler water purification device which comprises a floating bed, an aeration device, a plant straw filler container and a power supply device, the plant straw filler container is used for containing plant straw filler, and the plant straw filler container is connected with the aeration device and surrounds the aeration device; the floating bed is connected with the plant straw filler container, the plant straw filler container and the aeration device are positioned below the floating bed, the floating bed is connected with the power supply device, and the power supply device is positioned above the floating bed; the plant straw filler is rice straw and reed straw composite tabletting filler, the residence time of oxygen-containing bubbles in the second plant straw filler container and the first plant straw filler container is prolonged, the combined action of the oxygen-containing bubbles sprayed by the aeration device and the plant straw filler is fully exerted, the plant straw filler utilizes waste resources, and the environment is protected. A high-quality carbon source is provided, a carrier is provided for attachment of an aerobic microbial film, and the water treatment effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a straw filler water purification device and a sewage treatment method using the straw filler water purification device. Background Art

[0002] A technical solution combining aeration and packing bags or packing walls is often used in sewage treatment. Oxygen-containing gas aeration provides oxygen conditions for the growth and reproduction of microorganisms attached to the packing bags or packing walls and sewage treatment. Ozone aeration oxidizes and decomposes organic matter produced or attached to the surface of suspended packing bags or packing walls or the surface of activated carbon packing walls during the reaction to prevent pore blockage. However, there are cases where the aeration nozzle and the packing are at a large distance from each other. The sprayed oxygen-containing gas or ozone gas has not yet contacted the packing bag (wall) or has only partial contact with it, and sewage emerges, affecting the sewage purification efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions: A straw filler water purification device, comprising: a floating bed, an aeration device, a plant straw filler container and a power supply device; A plant straw filler container is used to contain the plant straw filler, and the plant straw filler container is connected to the aeration device and surrounds the aeration device; The floating bed is connected to a plant straw filler container, the plant straw filler container and the aeration device are located below the floating bed, and the floating bed is connected to a power supply device, which is located above the floating bed; The plant straw filler is a composite sheet filler of rice straw and reed straw.

[0004] Preferably, the floating bed comprises a floating bed body, a mounting through hole, a frame, a planting pot placement through hole and a connecting ring.

[0005] The main body of the floating bed is wrapped with a straw mat woven by reed straw and rice straw through a straw weaving machine. The main body of the floating bed is fixedly connected to the frame. The main body of the floating bed is surrounded by the frame. The frame is provided with a through hole for placing planting pots. The center position of the main body of the floating bed is provided with an installation through hole. The main body of the floating bed is fixedly connected to the installation through hole. A connecting ring is arranged on the side of the frame. The connecting ring is used to connect the floating bed with other floating beds.

[0006] Preferably, the aeration device comprises an aerator, a shield, a lifting ring, a connecting piece, a main aeration pipe, a branch aeration pipe, an aeration pipe frame, a tail exhaust pipe and a heavy block; The main aeration pipe, branch aeration pipes, aeration pipe frame and tail exhaust pipe are an integrated structure. The main aeration pipe is arranged in the aeration pipe frame. A gas inlet is provided on the main aeration pipe. There are multiple branch aeration pipes, and the multiple branch aeration pipes are axially evenly distributed on the outer circumference of the main aeration pipe. One end of all the branch aeration pipes is fixedly connected to the main aeration pipe. The main aeration pipe, branch aeration pipes and tail exhaust pipe are interconnected to form a gas channel. The other ends of all the branch aeration pipes are fixedly connected to the aeration pipe frame, and the air outlets of all the branch aeration pipes extend out of the aeration pipe frame. There is a frame hole between two adjacent frame rods of the aeration pipe frame; the tail exhaust pipe is located at the end of the main aeration pipe away from the gas inlet, and the inner side wall of the upper end of the aeration pipe frame is provided with an internal thread.

[0007] The connecting piece is used for connecting the aerator and the aeration pipe frame. The aerator is provided with a gas outlet, and the connecting piece is provided with a gas through hole running through it. The connecting piece is composed of a sleeve pipe column, a first disc, a second disc and an externally threaded pipe column from top to bottom. The gas outlet of the aerator is sleeved on the sleeve pipe column. The diameter of the first disc is larger than the diameter of the mounting through hole, and the diameter of the second disc is slightly smaller than the diameter of the mounting through hole. The external thread on the externally threaded pipe column is compatible with the internal thread of the aeration pipe frame and is threadedly connected.

[0008] The gas inlet on the main aeration pipe is communicated with the gas through hole on the connecting piece, and a heavy block is connected to the tail exhaust pipe at the bottom of the aeration pipe frame.

[0009] The bottom of the aerator is fixedly connected to the first disc of the connecting piece, the protective cover is arranged on the aerator, and the protective cover is fixedly connected to the lifting ring.

[0010] Preferably, the plant straw filling container comprises a first plant straw filling container and a second plant straw filling container.

[0011] The first plant straw filler container utilizes an aeration pipe frame, and a receiving space surrounded by a mesh is arranged on the frame hole of the aeration pipe frame, and a plurality of partition plates are detachably connected on the outer side wall of the main aeration pipe; The second plant straw filler container is multiple in number, and the overall structure is in the shape of an inverted bowl. There is a cavity between the upper and lower surfaces, and a central connecting ring and an edge closing ring are provided between the upper and lower surfaces. There is a supporting frame between the central connecting ring and the edge closing ring. The upper and lower surfaces are covered with permeable materials, and a feeding door is provided on the central connecting ring. The central connecting ring and the edge closing ring are made of materials that can undergo elastic deformation. The central connecting ring is sleeved on the aeration pipe frame and the outer side of the mesh to constrain the mesh.

[0012] Preferably, the radius of the lower opening of the second plant straw filler container is larger than the extension range of the branch aeration pipe, so that when the oxygen-containing bubbles ejected from the branch aeration pipe rise, they are covered by the second plant straw filler container.

[0013] Preferably, the main structure of the plant straw filler includes: a rice straw filler layer and a reed straw filler layer.

[0014] Preferably, the power supply device is electrically connected to the aerator to provide working power for the aerator, and includes a photovoltaic panel, a charge and discharge controller, a power storage unit and a voltage stabilizing module. The photovoltaic panel is fixedly connected to the floating bed body with a bracket, and the photovoltaic panel is electrically connected to the charge and discharge controller, the power storage unit and the voltage stabilizing module.

[0015] The present invention also provides a method for treating sewage using the straw filler water purification device: Including mesh aeration system, the mesh aeration system includes: large aerator, microporous aeration head and floating frame; The mesh aeration system adopts an underwater grid aeration mode; there are multiple microporous aeration heads, which are laid underwater together with the pipelines connected to the large aerator; the floating frame is laid on the water surface of the water area and connected to the piles fixed on the underwater foundation, which defines the boundary of the straw filler water purification device, and the boundary is less than 10% of the water area; The sewage purification method comprises the following steps: Step 1 S1: Arrangement of aeration system pipe network S1-1: Install a large aerator on the shore of the water area and a circuit connecting the large aerator to the power supply; S1-2: Install multiple microporous aeration heads evenly on the pipeline; S1-3: Laying the pipeline in step S1-2 underwater; S1-4: Aeration pipeline is connected to the large aerator; Step 2 S2: Floating frame layout S2-1: inserting multiple piles into the underwater foundation; S2-2: The floating frame is hung on the piles; Step 3 S3: Laying out the straw filler water purification device Within the boundaries of the floating frame, a working straw filler water purification device is deployed; Step 4 S4: Start the aeration system Turn on the large aerator to aerate the water within the boundary; Step 5 S5: Monitor water quality in the water area Monitor the water quality of the water area. If the water quality meets the requirements, suspend the operation of the aeration system and the straw filler water purification device; otherwise, the aeration system and the straw filler water purification device continue to operate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The plant straw filler container of the present invention is connected to the aeration device and surrounds the aeration device, and the radius of the lower opening of the second plant straw filler container is larger than the extension range of the branch aeration pipe, so that when the oxygen-containing bubbles ejected from the branch aeration pipe rise, they are covered by the second plant straw filler container, fall within the range of the second plant straw filler container, and enter the second plant straw filler container and the first plant straw filler container, prolonging the retention time of the oxygen-containing bubbles in the second plant straw filler container and the first plant straw filler container, giving full play to the combined effect of the oxygen-containing bubbles ejected from the aeration device and the plant straw filler; 2. Use plant straw fillers to utilize waste resources, reduce secondary pollution, provide high-quality carbon sources, provide carriers for aerobic microbial film formation and attachment, improve water treatment effects, and plant straw fillers are easy to degrade, achieving emission reduction effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the straw filler water purification device; Figure 2 This is the axonometric view of the straw fill water purification device; Figure 3 This is a top view of the floating bed; Figure 4 This is the axonometric view of the aeration device; Figure 5 This is an exploded view of the aeration device; Figure 6 is a schematic diagram of the connecting piece structure; Figure 7 Schematic diagram of the partition plate structure, wherein Figure a is a schematic diagram of the partition plate before assembly; Figure b is a schematic diagram of the partition plate after assembly; Figure 8 This is a schematic diagram of the plant straw filler structure; Fig. 9 A diagram showing a first plant straw filler container; Fig.10 is a schematic diagram of a second plant straw filler container; Fig.11 It is a schematic diagram of the mesh aeration system, and the shadow in the figure represents the straw filler water purification device.

[0018] The markings in the attached drawings are: 100. floating bed, 101. floating bed body, 102. installation through hole, 103. frame, 104. planting pot placement through hole, 105. connecting ring, 200. aeration device, 201. aerator, 202. shield, 203. lifting ring, 205. connecting piece, 2051. sleeve pipe column, 2052. first disc, 2053. second disc, 2054. external threaded pipe column, 206. main aeration pipe, 207. branch aeration pipe, 208. aeration pipe frame, 209. 09. tail exhaust pipe, 210. heavy block, 310. first plant straw filler container, 311. mesh, 312. partition plate, 320. second plant straw filler container, 321. center connecting ring, 322. feeding door, 323. edge closing ring, 401. photovoltaic panel, 500. plant straw filler, 501. rice straw filler layer, 502. reed straw filler layer, 600. mesh aeration system, 601. large aerator, 602. microporous aeration head, 603. floating frame. DETAILED DESCRIPTION

[0019] The invention will now be further described with reference to specific embodiments.

[0020] In the description of the present invention, it should be noted that the terms "upper side", "lower side", "inside", "outside" and other similar directional interpretations are based on the directional relationships shown in the drawings of the specification, and are used to facilitate the description of the positional relationship of the equipment in the invention.

[0021] The general concept of the present invention is to place a straw filler water purification device in a pond, river or ditch with sewage; the straw filler water purification device comprises a floating bed and a plant straw filler container suspended on the floating bed, the water body contacts the filler to form a biofilm, which absorbs and decomposes pollutants in the water, and the plant straw filler container is equipped with an aeration device to improve the decontamination and water purification efficiency. Embodiment 1:

[0022] See also Figure 1 , 2 As shown, the present invention provides a straw filler water purification device, comprising a floating bed 100, an aeration device 200, a plant straw filler container and a power supply device.

[0023] See also Figure 3 The floating bed 100 includes a floating bed body 101, a mounting through hole 102, a frame 103, a planting pot placement through hole 104 and a connecting ring 105.

[0024] The floating bed body 101 is wrapped with straw mats woven by aquatic plant straws such as reed straws, rice straws, etc. through a straw weaving machine. The floating bed body 101 is fixedly connected to the frame 103. The floating bed body 101 is surrounded by the frame 103. The frame 103 is provided with a planting pot placement through hole 104. The planting pot placement through hole 104 is used to place a planting pot (the planting pot is not drawn in the figure), which is convenient for the cultivation of small aquatic plants such as money grass and mushroom grass, forming a hierarchical aquatic plant ecosystem.

[0025] A mounting through hole 102 is provided at the center of the floating bed body 101 . The floating bed body 101 and the mounting through hole 102 are fixedly connected. The mounting through hole 102 is used to install the aeration device 200 and the plant straw filler container.

[0026] The mounting through hole 102 and the frame 103 are made of polyethylene, polypropylene or polyurethane foam, which not only ensures the strength of the floating bed 100, but also ensures that the buoyancy of the floating bed 100 can support the operation of the entire device.

[0027] The connecting ring 105 is disposed on the side of the frame 103, and the connecting ring 105 is used to connect the floating bed with other floating beds.

[0028] See also Figure 4-6 The aeration device 200 includes an aerator 201, a protective cover 202, a lifting ring 203, a connecting piece 205, a main aeration pipe 206, a branch aeration pipe 207, an aeration pipe frame 208, a tail exhaust pipe 209 and a heavy block 210.

[0029] The main aeration pipe 206, the branch aeration pipe 207, the aeration pipe frame 208 and the tail exhaust pipe 209 are an integrated structure. The main aeration pipe 206 is arranged in the aeration pipe frame 208. The main aeration pipe 206 is provided with a gas inlet. There are multiple branch aeration pipes 207, and the multiple branch aeration pipes 207 are axially evenly distributed on the outer peripheral surface of the main aeration pipe 206. One end of all the branch aeration pipes 207 is fixedly connected to the main aeration pipe 206. The air pipe 207 and the tail exhaust pipe 209 are interconnected to form a gas channel. The other ends of all branch aeration pipes 207 are fixedly connected to the aeration pipe frame 208, and the air outlets of all branch aeration pipes 207 extend out of the aeration pipe frame 208. There is a frame hole between two adjacent frame rods of the aeration pipe frame 208; the tail exhaust pipe 209 is located at the end of the main aeration pipe 206 away from the gas inlet, and the inner side wall of the upper end of the aeration pipe frame 208 is provided with an internal thread.

[0030] The connector 205 is used for connecting the aerator 201 and the aeration pipe frame 208. The aerator 201 is provided with a gas outlet (not shown in the figure), and the connector 205 is provided with a gas through hole running through it. The connector 205 is composed of a sleeve column 2051, a first disc 2052, a second disc 2053 and an externally threaded pipe column 2054 from top to bottom. The sleeve column 2051 is adapted to the gas outlet of the aerator 201, and the gas outlet of the aerator 201 is sleeved on the sleeve column 2051. The diameter of the first disc 2052 is larger than the diameter of the mounting through hole 102, and the diameter of the second disc 2053 is slightly smaller than the diameter of the mounting through hole 102. The external thread on the externally threaded pipe column 2054 is adapted to the internal thread of the aeration pipe frame 208 and is threadedly connected thereto.

[0031] The gas inlet on the main aeration pipe 206 is communicated with the gas through hole on the connecting piece 205 .

[0032] The tail exhaust pipe 209 is cone-shaped, and a filter is provided at the air outlet.

[0033] A heavy block 210 is connected to the bottom of the aeration pipe frame 208 and the tail exhaust pipe 209. The heavy block 210 can prevent damage to the device caused by excessive water flow disturbance when sewage is discharged.

[0034] The bottom of the aerator 201 is fixedly connected to the first disc 2052 of the connecting member 205 , and the protective cover 202 is disposed on the aerator 201 . The protective cover 202 is fixedly connected to the lifting ring 203 .

[0035] The plant straw filler container is used to contain the plant straw filler, and includes a first plant straw filler container 310 and a second plant straw filler container 320 .

[0036] See also Figure 7 and 9 The first plant straw filler container 310 utilizes the aeration tube frame 208, and a mesh 311 is set on the frame hole of the aeration tube frame 208 to form a storage space surrounded by the plant straw filler container 310. Water and air sprayed by the aeration device 200 can pass through the mesh of the mesh 311 and enter the first plant straw filler container 310; on the outer wall of the main aeration tube 206, a partition plate 312 is detachably connected, and the partition plate 312 is composed of two half-side partition plates correspondingly provided with dovetail grooves and dovetail blocks, which is convenient for assembly in a narrow space. The partition plate 312 divides the storage space into several storage sub-spaces, fully utilizing the space, being able to hold more plant straw fillers 500, improving the water flow and specific surface area, and avoiding the storage of plant straw fillers 500. All piled up together.

[0037] There are multiple partition plates 312 . In this embodiment, three partition plates 312 are used.

[0038] See also Fig.10 The second plant straw filler container 320 has an overall structure in the shape of an inverted bowl, with a cavity between the upper and lower surfaces, a central connecting ring 321 and an edge sealing ring 323 between the upper and lower surfaces, the central connecting ring 321 and the edge sealing ring 323 have a supporting frame, and the upper and lower surfaces are covered with a water-permeable material, such as fabric, stainless steel woven mesh, and plastic gauze, and water and air sprayed by the aeration device 200 can pass through the water-permeable material into the second plant straw filler container 320. A feeding door 322 for feeding and taking out the plant straw filler is provided on the central connecting ring 321. The central connecting ring 321 and the edge sealing ring 323 are made of a material that can undergo elastic deformation (such as rubber, plastic).

[0039] The central connecting ring 321 of the second plant straw filler container 320 is sleeved on the outer side of the aeration tube frame 208 and the mesh 311. The central connecting ring 321 and the edge closing ring 323 are made of elastically deformable materials. By pulling the central connecting ring 321 hard, the branch aeration tube 207 extending out of the aeration tube frame 208 can be passed. In addition, the central connecting ring 321 made of elastically deformable materials can constrain the mesh 311 set on the frame hole of the aeration tube frame 208.

[0040] There are multiple second plant straw filling containers 320 . In this embodiment, three second plant straw filling containers 320 are used.

[0041] The radius of the lower opening of the second plant straw filler container 320 is larger than the extension range of the branch aeration pipe 207, so that when the oxygen-containing bubbles ejected from the branch aeration pipe 207 rise, they are covered by the second plant straw filler container 320, fall within the range of the second plant straw filler container 320, and enter the second plant straw filler container 320 and the first plant straw filler container 310, thereby prolonging the residence time of the oxygen-containing bubbles in the second plant straw filler container 320 and the first plant straw filler container 310.

[0042] The first plant straw filler container 310 and the second plant straw filler container 320 are both filled with plant straw filler 500. The plant straw filler 500 is prepared from aquatic plant straw into an MBBR filler suitable for sewage treatment, and has the advantages of air permeability, mechanical toughness, and nutrient components such as organic matter such as cellulose. The aquatic plant straw uses common rice straw and reed straw to prepare a rice-reed straw composite filler. The rice-reed straw composite filler provides an effective carbon source for microbial attachment and biofilm formation, and the degradability and energy-saving effect of the rice-reed straw composite filler itself provide new ideas for sewage treatment. The present invention provides a straw filler water purification device that ensures that biomass fillers play an important role by biomimetic aquatic plants, improves the removal effect of basic indicators such as COD, BOD, TN, TP, etc., and has the advantages of energy-saving reuse, simulated purification, efficient attachment, improved purification, and waste secondary utilization. By providing a mechanism of straw carbon source, the ecological benefits and biomass material reuse are used to upgrade the effect of MBBR in the field of sewage treatment.

[0043] See also Figure 8 The plant straw filler 500 is prepared from rice straw and reed straw composite pressed filler processed from MBBR filler. The MBBR filler processing is the initial treatment of the MBBR equipment. The main structure includes: a rice straw filler layer 501 and a reed straw filler layer 502.

[0044] The specific processing flow of plant straw filler 500 is as follows: 1. Remove other roots from aquatic plant straw (rice, reed); 2. Rinse the surface with distilled water and dry in a 105°C oven for 30 minutes; 3. Keep in an oven at 80°C for 24 hours until its mass no longer changes; 4. Stretch after passing toughness test; 5. Cut the filler to 5-10mm; 6. The rice and reed fillers were placed in the MBBR equipment and operated for 20 days, with water intake of 15 minutes, aeration of 2 hours, stirring of 2 hours, aeration of 2 hours, stirring of 2 hours, sedimentation of 2 hours, water discharge of 15 minutes, and idleness of 1.5 hours. Two cycles were run every day, and a certain amount of activated sludge was discharged at the water discharge stage to maintain the sludge age at 8-10 days; 7. Take out the rice and reed fillers and dry them in the sun; 8. The rice and reed fillers are pressed into a rice straw filler layer 501 and a reed straw filler layer 502 respectively; 9. A layer of rice straw filler layer 501 is placed in the middle, and a layer of reed straw filler layer 502 is placed above and below, and the plant straw filler 500 is pressed and compounded using an adhesive. The mass ratio of the three layers should be maintained between 1:2:1 and 1:1:1; 10. Cut the whole piece of plant straw filler 500 into small pieces of suitable size, shear and break them into broken fillers with a length of 5-10 mm and a width of 3-6 mm, and set them aside.

[0045] Because the cellulose, hemicellulose and other substances in rice and reed straw materials provide a carbon source for microbial attachment, resulting in the formation of aerobic bacterial biofilms attached to the straw materials, the fillers prepared from them are excellent fillers for sewage purification.

[0046] Laboratory Control Tests: The results of the control decontamination and purification test of rice and reed composite plant straw filler 500, rice straw filler, reed straw filler and blank group are as follows: After the laboratory MBBR simulation equipment was stabilized, the effluent quality was measured, and other variables such as filler size were kept consistent during the filler test, and finally the representative experimental results were obtained: The average effluent COD (chemical oxygen demand) concentrations of the reactors with rice and reed straw experimental fillers and plant straw filler 500 were 7.56 mg / L, 15.32 mg / L and 6.12 mg / L, respectively, and the average COD removal rates were 98.45%, 96.85% and 98.74%, respectively. Compared with the blank group (effluent concentration 19.33 mg / L, average removal rate 96.03%), it can be seen that the TP treatment effect was effectively improved.

[0047] The average TP (total phosphorus) concentrations in the effluent of the reactors with rice and reed straw experimental fillers and plant straw filler 500 were 0.66 mg / L, 0.65 mg / L and 0.63 mg / L, respectively, and the average TP removal rates were 95.34%, 95.78% and 95.86%, respectively. Compared with the blank group (effluent concentration 0.70 mg / L, average removal rate 95.13%), it can be seen that the TP treatment effect was effectively improved.

[0048] The average TN (total nitrogen) concentrations in the effluent of the reactors with rice and reed straw experimental fillers and plant straw filler 500 were 6.61 mg / L, 11.34 mg / L and 6.04 mg / L, respectively, and the average TN removal rates were 83.57%, 66.26% and 84.73%, respectively. Compared with the blank group (effluent concentration 12.25 mg / L, average removal rate 65.06%), it can be seen that the TN treatment effect was effectively improved.

[0049] The same experimental test steps were carried out on plant straw fillers 500 of different sizes, 1-3mm, 5-7mm, 9-11mm and 5-10mm (the width was kept at 3-6mm). The test results showed that under the premise of ensuring mechanical toughness, application time and water output effect, the size of 5-10mm is the best.

[0050] It can be concluded that the composite material will take into account the advantages of both and have good treatment effects on general indicators in water treatment.

[0051] Meanwhile, the mechanical toughness of the plant straw filler 500 composited with rice and reed is the best in comparison.

[0052] The main functions of the rice and reed composite plant straw filler 500 are to provide a carbon source and a biofilm carrier. The microbial attachment and microbial food web ecological construction will provide high-quality purification and degradation performance.

[0053] The plant straw filler 500 is easy to degrade and handle during subsequent replacement, treatment and recycling. After water treatment, the N and P elements in the water are attached to the surface of the straw in the form of salts under the action of microorganisms. In the subsequent treatment process, it can be used as a nutrient fertilizer to participate in the process of soil improvement and resource utilization.

[0054] See also Figure 1 and 2 The power supply device includes a photovoltaic panel 401, which is fixedly connected to the floating bed body 101 by a bracket. The photovoltaic panel 401 is electrically connected to the charge and discharge controller, the power storage unit and the voltage stabilizing module (the charge and discharge controller, the power storage unit and the voltage stabilizing module are not drawn in the figure) to provide working power for the aerator 201. The power output end of the power supply device is electrically connected to the aerator 201, and a power switch (power switch, not drawn in the figure) is provided between the two. When the power switch is turned on, the aerator 201 is powered on and works. When the power switch is turned off, the aerator 201 loses power and stops working.

[0055] The aerator 201 sprays air, ozone or a mixed gas of air and ozone into the water.

[0056] The photovoltaic panel 401 is installed on the floating bed body 101 to provide working power for the aerator 201 and moves along with the floating bed body 101, thus eliminating the need for an external power supply line.

[0057] The assembly steps of the straw filler water purification device are as follows: S1: Filling with plant straw filler S1-1: Open the feeding door 322 on the second plant straw filling container 320, fill the plant straw filling 500 into the accommodating cavity of the second plant straw filling container 320, and close the feeding door 322; S1-2: Open the mesh sheet 311 of the first plant straw filler container 310, fill the plant straw filler 500 into each containing sub-space of the first plant straw filler container 310, and cover the mesh sheet 311; S1 - 3 : Sleeve the second plant straw filler container 320 onto the aeration pipe frame 208 to constrain the mesh 311 .

[0058] S2: Install the aerator S2-1: Socket the gas outlet of the aerator 201 onto the socket column 2051 of the connector 205; and fix the bottom of the aerator 201 to the first disc 2052 of the connector 205; S2-2: Install the protective cover 202 on the aerator 201.

[0059] S3: Aerator connected to aeration pipe S3-1: lift the lifting ring 203 and insert the second disc 2053 of the connecting member 205 into the mounting through hole 102 of the floating bed 100; S3-2: The external threaded pipe column 2054 of the connecting piece 205 is threadedly connected with the internal thread of the inner side wall of the upper end of the aeration pipe frame 208.

[0060] S4: Install the power supply unit S4-1: The photovoltaic panel 401 is fixedly connected to the floating bed 100; S4-2: The photovoltaic panel 401 is connected to the charge and discharge controller, the power storage unit and the voltage stabilizing module in a circuit; S4-3: The power output terminal of the voltage stabilizing module is connected to the power input terminal circuit of the aerator 201. Embodiment 2:

[0061] See also Fig.11 The present invention also provides a method for purifying sewage in water areas using the straw filler water purification device.

[0062] The net aeration system 600 includes: a large aerator 601, a microporous aeration head 602 and a floating frame 603; The mesh aeration system 600 adopts an underwater mesh aeration mode; there are multiple microporous aeration heads 602, which are laid underwater together with the pipelines connected to the large aerator 601; the floating frame 603 is laid on the water surface of the water area and connected to the piles fixed on the underwater foundation. The floating frame 603 is made of PE pipes and defines the boundary of the straw filler water purification device, and the boundary is less than 10% of the water area; The sewage purification method comprises the following steps: Step 1 S1: 600 pipe network layout of aeration system S1-1: Install a large aerator 601 on the shore of the water area and a circuit connecting the large aerator 601 and a power supply; S1-2: Install multiple microporous aeration heads 602 evenly on the pipeline; S1-3: Laying the pipeline in step S1-2 underwater; S1-4: the aeration pipeline is connected to the large aerator 601; Step 2 S2: Floating frame 603 layout S2-1: inserting multiple piles into the underwater foundation; S2-2: The floating frame 603 is hung on the piles; Step 3 S3: Laying out the straw filler water purification device Within the boundary range set by the floating frame 603, a straw filler water purification device in working state is deployed; Step 4 S4: Start the aeration system 600 Turn on the large aerator 601 to spray air, ozone or a mixture of air and ozone into the water within the boundary; Step 5 S5: Monitor water quality in the water area The water quality of the water area is monitored. If the water quality meets the requirements, the aeration system 600 and the straw filler water purification device are suspended; otherwise, the aeration system 600 and the straw filler water purification device continue to work.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, and substitutions may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A straw filler water purification device, characterized in that: It comprises a floating bed (100), an aeration device (200), a plant straw filler container and a power supply device; A plant straw filler container, used to contain the plant straw filler (500), the plant straw filler container being connected to the aeration device (200) and surrounding the aeration device (200); The floating bed (100) is connected to a plant straw filler container, the plant straw filler container and the aeration device (200) are located below the floating bed (100), and the floating bed (100) is connected to a power supply device, which is located above the floating bed (100); The plant straw filler (500) is a composite sheet filler of rice straw and reed straw.

2. The straw-filled water purification device according to claim 1, characterized in that: The floating bed (100) comprises a floating bed body (101), a mounting through hole (102), a frame (103), a planting pot placement through hole (104), and a connecting ring (105); The floating bed body (101) is wrapped with a straw mat made of reed straw and rice straw by a straw weaving machine. The floating bed body (101) is fixedly connected to a frame (103). The floating bed body (101) is surrounded by the frame (103). A through hole (104) for placing a planting pot is provided on the frame (103). A mounting through hole (102) is provided at the center of the floating bed body (101). The floating bed body (101) and the mounting through hole (102) are fixedly connected. A connecting ring (105) is provided on the side of the frame (103). The connecting ring (105) is used to connect the floating bed to other floating beds.

3. The straw-filled water purification device according to claim 1, characterized in that: An aeration device (200) comprises an aerator (201), a protective cover (202), a lifting ring (203), a connecting piece (205), a main aeration pipe (206), a branch aeration pipe (207), an aeration pipe frame (208), a tail exhaust pipe (209), and a heavy block (210); The main aeration pipe (206), the branch aeration pipe (207), the aeration pipe frame (208) and the tail exhaust pipe (209) are an integrated structure. The main aeration pipe (206) is arranged in the aeration pipe frame (208). A gas inlet is provided on the main aeration pipe (206). There are a plurality of branch aeration pipes (207). The plurality of branch aeration pipes (207) are axially evenly distributed on the outer peripheral surface of the main aeration pipe (206). One end of all the branch aeration pipes (207) is fixedly connected to the main aeration pipe (206). The main aeration pipe (206) The branch aeration pipes (207) and the tail exhaust pipe (209) are interconnected to form a gas passage; the other ends of all the branch aeration pipes (207) are fixedly connected to the aeration pipe frame (208); the gas outlets of all the branch aeration pipes (207) extend out of the aeration pipe frame (208); and frame holes are provided between two adjacent frame rods of the aeration pipe frame (208); the tail exhaust pipe (209) is located at an end of the main aeration pipe (206) away from the gas inlet; and the inner side wall of the upper end of the aeration pipe frame (208) is provided with internal threads; The connecting piece (205) is used for connecting the aerator (201) and the aeration pipe frame (208); the aerator (201) is provided with a gas outlet, the connecting piece (205) is provided with a gas through hole penetrating therethrough, the connecting piece (205) is composed of a sleeve pipe column (2051), a first disc (2052), a second disc (2053) and an externally threaded pipe column (2054) from top to bottom, the gas outlet of the aerator (201) is sleeved on the sleeve pipe column (2051), the diameter of the first disc (2052) is larger than the diameter of the installation through hole (102), the diameter of the second disc (2053) is slightly smaller than the diameter of the installation through hole (102), the external thread on the externally threaded pipe column (2054) is compatible with the internal thread of the aeration pipe frame (208), and the two are threadedly connected; The gas inlet on the main aeration pipe (206) is connected to the gas through hole on the connecting piece (205), and a heavy block (210) is connected to the bottom of the aeration pipe frame (208) and the tail exhaust pipe (209); The bottom of the aerator (201) is fixedly connected to the first disc (2052) of the connecting member (205); the protective cover (202) is disposed on the aerator (201); and the protective cover (202) is fixedly connected to the lifting ring (203).

4. The straw-filled water purification device according to claim 3, characterized in that: A plant straw filling container, comprising a first plant straw filling container (310) and a second plant straw filling container (320); The first plant straw filler container (310) is a storage space formed by utilizing an aeration pipe frame (208) and arranging a mesh sheet (311) on the frame hole of the aeration pipe frame (208), and a plurality of partition plates (312) are detachably connected to the outer wall of the main aeration pipe (206); The second plant straw filler container (320) is multiple in number and has an overall structure in the shape of an inverted bowl. A cavity is provided between the upper and lower surfaces. A central connecting ring (321) and an edge sealing ring (323) are provided between the upper and lower surfaces. A supporting frame is provided between the central connecting ring (321) and the edge sealing ring (323). The upper and lower surfaces are covered with a water-permeable material. A feeding door (322) is provided on the central connecting ring (321). The central connecting ring (321) and the edge sealing ring (323) are made of a material capable of elastic deformation. The central connecting ring (321) is sleeved on the aeration pipe frame (208) and the outer side surface of the mesh (311) to constrain the mesh (311).

5. The straw-filled water purification device according to claim 4, characterized in that: The radius of the lower opening of the second plant straw filler container (320) is larger than the extension range of the branch aeration pipe (207), so that when the oxygen-containing bubbles ejected from the branch aeration pipe (207) rise, they are covered by the second plant straw filler container (320).

6. The straw-filled water purification device according to claim 1, characterized in that: The main structure of the plant straw filler (500) comprises a rice straw filler layer (501) and a reed straw filler layer (502).

7. A straw-filled water purification device according to any one of claims 1 to 6, characterized in that: The power supply device is electrically connected to the aerator (201) and provides working power for the aerator (201), comprising a photovoltaic panel (401), a charge and discharge controller, a power storage unit and a voltage stabilizing module. The photovoltaic panel (401) is fixedly connected to the floating bed body (101) by a bracket, and the photovoltaic panel (401) is electrically connected to the charge and discharge controller, the power storage unit and the voltage stabilizing module.

8. The straw-filled water purification device according to claim 7 is applied to a sewage purification method in water areas, characterized in that: The invention comprises a mesh aeration system (600), wherein the mesh aeration system (600) comprises: a large aerator (601), a microporous aeration head (602) and a floating frame (603); The mesh aeration system (600) adopts an underwater mesh aeration mode; a plurality of microporous aeration heads (602) are arranged underwater together with pipelines connected to a large aerator (601); a floating frame (603) is arranged on the surface of the water area and connected to a pile fixed to a foundation at the bottom of the water, defining a boundary for constraining the arrangement of the straw filler water purification device, wherein the boundary is less than 10% of the water area; The sewage purification method comprises the following steps: Step 1 S1: Aeration system (600) pipe network layout S1-1: Installing a large aerator (601) on the shore of the water area and a circuit connecting the large aerator (601) to a power supply; S1-2: evenly install multiple microporous aeration heads (602) on the pipeline; S1-3: Laying the pipeline in step S1-2 underwater; S1-4: the aeration pipeline is connected to the large aerator (601); Step 2 S2: Floating frame (603) layout S2-1: inserting multiple piles into the underwater foundation; S2-2: The floating frame (603) is hung on the pile; Step 3 S3: Laying out the straw filler water purification device A straw filler water purification device in working state is deployed within the boundary range of the floating frame (603); Step 4 S4: Start the aeration system (600) Turn on the large aerator (601) to aerate the water within the boundary; Step 5 S5: Monitor water quality in the water area The water quality of the water area is monitored. If the water quality meets the requirements, the aeration system (600) and the straw filler water purification device are suspended; otherwise, the aeration system (600) and the straw filler water purification device continue to work.

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