Straw filler water purification device and sewage treatment method thereof

Abstract

The present invention discloses a straw filler water purification device, comprising: a floating bed, an aeration device, a plant straw filler container and a power supply device; the plant straw filler container is used to accommodate plant straw filler, the plant straw filler container is connected to the aeration device and surrounds the aeration device; the floating bed is connected to the plant straw filler container, the plant straw filler container and the aeration device are located below the floating bed, the floating bed is connected to the power supply device, and the power supply device is located above the floating bed; the plant straw filler is a composite pressed sheet filler of rice straw and reed straw, which prolongs the retention time of oxygen-containing bubbles in the second plant straw filler container and the first plant straw filler container, fully utilizes the combined effect of oxygen-containing bubbles ejected by the aeration device and the plant straw filler, utilizes waste resources, provides a high-quality carbon source, provides a carrier for the formation and attachment of aerobic microbial films, and improves water treatment effects.

Description

TECHNICAL FIELD

[0001] The present application 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

[0002] In sewage treatment, a technical solution combining aeration and filler bag or filler wall is often used. Oxygen-containing gas aeration provides oxygen conditions for the growth and reproduction of microorganisms attached to the filler bag or filler wall and sewage treatment. Ozone aeration oxidizes and decomposes organic matter produced or attached to the surface of suspended filler bags or filler walls or activated carbon filler walls in the reaction, preventing pore blockage. However, there are cases where the aeration nozzle and the filler are at a large distance apart. The oxygen-containing gas or ozone gas emitted has not yet contacted or only partially contacted the filler bag (wall), and the sewage is discharged, affecting the sewage purification efficiency. SUMMARY

[0003] To solve the above technical problems, the present application provides the following technical solutions:

[0004] A straw filler water purification device, comprising: a floating bed, an aeration device, a plant straw filler container, and a power supply device;

[0005] The plant straw filler container is used to contain plant straw filler. The plant straw filler container is connected with the aeration device and surrounds the aeration device.

[0006] The floating bed is connected with the plant straw filler container. The plant straw filler container and the aeration device are located below the floating bed. The floating bed is connected with the power supply device. The power supply device is located above the floating bed.

[0007] The plant straw filler is a composite pressed sheet filler of rice straw and reed straw.

[0008] Preferably, the floating bed comprises a floating bed body, a mounting through hole, a frame, a planting pot placing through hole, and a connecting ring.

[0009] The floating bed body is wrapped by a straw mat made of reed straw and rice straw by a straw braiding machine. The floating bed body is fixedly connected with the frame. The floating bed body is surrounded by the frame. The frame is provided with a planting pot placing through hole. The center of the floating bed body is provided with a mounting through hole. The floating bed body and the mounting through hole are fixedly connected. The connecting ring is arranged on the side edge of the frame. The connecting ring is used to connect the floating bed with other floating beds.

[0010] 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.

[0011] The main aeration pipe, the branch aeration pipe, the aeration pipe frame and the tail exhaust pipe are integrated, the main aeration pipe is arranged in the aeration pipe frame, the main aeration pipe is provided with a gas inlet, the branch aeration pipe is multiple, the multiple branch aeration pipes are distributed on the outer side surface of the main aeration pipe in the axial direction, one end of all the branch aeration pipes is fixedly connected with the main aeration pipe, the main aeration pipe, the branch aeration pipe and the tail exhaust pipe are mutually penetrated to form a gas passage, the other end of all the branch aeration pipes is fixedly connected with the aeration pipe frame, and the gas outlets of all the branch aeration pipes are arranged outside the aeration pipe frame, and the aeration pipe frame is provided with a frame hole between two adjacent frame rods; the tail exhaust pipe is arranged at one end of the main aeration pipe away from the gas inlet, and an inner thread is arranged on the inner side wall of the upper end of the aeration pipe frame.

[0012] The connecting piece is used for connecting the aerator and the aeration pipe frame, the aerator is provided with a gas outlet, the connecting piece is provided with a gas through hole penetrating the connecting piece, the connecting piece comprises, from top to bottom, a sleeving pipe column, a first disc, a second disc and an outer thread pipe column, the gas outlet of the aerator is sleeved on the sleeving pipe column, the diameter of the first disc is larger than the diameter of the mounting through hole, the diameter of the second disc is slightly smaller than the diameter of the mounting through hole, the outer thread of the outer thread pipe column is matched with the inner thread of the aeration pipe frame, and the outer thread is threadedly connected with the inner thread.

[0013] The gas inlet of the main aeration pipe is communicated with the gas through hole of the connecting piece, and a heavy block is arranged on the bottom of the aeration pipe frame and the tail exhaust pipe.

[0014] The bottom of the aerator is fixedly connected with the first disc of the connecting piece, a shield is arranged on the aerator, and the shield is fixedly connected with a lifting ring.

[0015] Preferably, the plant straw filler container comprises a first plant straw filler container and a second plant straw filler container.

[0016] The first plant straw filler container is a containing space surrounded by the aeration pipe frame and a mesh arranged on the frame hole of the aeration pipe frame, and a plurality of partition plates are detachably clamped on the outer side wall of the main aeration pipe.

[0017] The second plant straw filler container is multiple, and the overall structure is in the shape of an inverted bowl, the upper surface and the lower surface of the second plant straw filler container are spaced apart to form a containing cavity, the center connecting ring and the edge sealing ring are arranged between the upper surface and the lower surface, the center connecting ring and the edge sealing ring are spaced apart to form a support framework, the upper surface and the lower surface are covered with a water permeable material, a feeding door is arranged on the center connecting ring, and the center connecting ring and the edge sealing ring are made of a material capable of elastically deforming, the center connecting ring is sleeved outside the aeration pipe frame and the mesh to constrain the mesh.

[0018] Preferably, the radius of the lower opening of the second plant straw filler container is greater than the extension range of the branch aeration pipe, so that the branch aeration pipe is covered by the second plant straw filler container when the oxygen-containing bubbles sprayed by the branch aeration pipe rise.

[0019] Preferably, the plant straw filler main structure comprises: a rice straw filler layer and a reed straw filler layer.

[0020] Preferably, the power supply device is electrically connected with the aerator to provide power supply for the aerator, and the power supply device comprises a photovoltaic panel, a charge-discharge controller, a power storage unit and a voltage stabilizing module, the photovoltaic panel is fixedly connected to the floating bed main body by a support, and the photovoltaic panel is electrically connected with the charge-discharge controller, the power storage unit and the voltage stabilizing module.

[0021] The application also provides a sewage treatment method using the straw filler water purification device.

[0022] The netted aeration system comprises: a large aerator, a micro-porous aeration head and a floating frame.

[0023] The netted aeration system adopts an underwater net rack aeration mode; the micro-porous aeration head is a plurality of, and is arranged underwater together with a pipeline connected with the large aerator; the floating frame is arranged on the water surface of the water area, is connected with a standing post fixed to a water bottom foundation, and defines a limit for arranging the straw filler water purification device, and the limit is less than 10% of the area of the water area.

[0024] The sewage purification treatment method comprises the following steps.

[0025] Step one S1: pipeline network arrangement of the aeration system

[0026] S1-1: installing the large aerator and a circuit connecting the large aerator and a power supply on the shore of the water area;

[0027] S1-2: uniformly installing the plurality of micro-porous aeration heads on the pipeline;

[0028] S1-3: arranging the pipeline in step S1-2 underwater;

[0029] S1-4: connecting the aeration pipeline with the large aerator;

[0030] Step two S2: floating frame arrangement

[0031] S2-1: inserting the plurality of standing posts into the water bottom foundation;

[0032] S2-2: hanging the floating frame on the standing posts;

[0033] Step three S3: arranging the straw filler water purification device

[0034] Arranging the straw filler water purification device in a working state within the limit range of the floating frame;

[0035] Step four S4: starting the aeration system to work

[0036] Turning on the large aerator to aerate the water in the limit;

[0037] Step five S5: monitoring the water quality of the water area

[0038] If the water quality meets the requirements, the aeration system and the straw filler water purification device are suspended; otherwise, the aeration system and the straw filler water purification device continue to work.

[0039] Compared with the prior art, the present application has the following beneficial effects:

[0040] 1. The plant straw filler container is connected with the aeration device, surrounds the aeration device, and the radius of the lower opening of the second plant straw filler container is greater than the extension range of the branch aeration pipe, so that when the branch aeration pipe sprays the oxygen-containing bubbles upward, the oxygen-containing bubbles are covered by the second plant straw filler container and fall into the second plant straw filler container and the first plant straw filler container, prolonging the residence time of the oxygen-containing bubbles in the second plant straw filler container and the first plant straw filler container, and fully exerting the combined action of the oxygen-containing bubbles sprayed by the aeration device and the plant straw filler;

[0041] 2. The plant straw filler is used to utilize waste resources, reduce secondary pollution, provide high-quality carbon sources, provide carriers for the formation and attachment of aerobic microbial membranes, improve water treatment effect, and realize emission reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a front view of the straw filler water purification device;

[0043] Figure 2 It is an axonometric view of the straw filler water purification device;

[0044] Figure 3 It is a top view of the floating bed;

[0045] Figure 4 It is an axonometric view of the aeration device;

[0046] Figure 5 It is an exploded view of the aeration device;

[0047] Figure 6 It is a structure diagram of the connecting piece;

[0048] Figure 7 It is a structure diagram of the partition plate, wherein Fig. a is a schematic diagram before the partition plate is assembled; Fig. b is a schematic diagram after the partition plate is assembled;

[0049] Figure 8 It is a structure diagram of the plant straw filler;

[0050] Figure 9 It is a display diagram of the first plant straw filler container;

[0051] Figure 10 The second plant straw filler container is shown in the figure;

[0052] Figure 11 The net aeration system is shown in the figure, and the shadow represents the straw filler water purification device.

[0053] The marks in the figure are: 100. floating bed, 101. floating bed body, 102. mounting through hole, 103. frame, 104. planting pot placing 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 thread pipe column, 206. main aeration pipe, 207. branch aeration pipe, 208. aeration pipe frame, 209. 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. net aeration system, 601. large aerator, 602. microporous aeration head, 603. floating frame. DETAILED DESCRIPTION

[0054] The application will be further described in combination with specific embodiments.

[0055] In the description of the application, it should be noted that the terms "upper side", "lower side", "inner", "outer" and the like similar orientation explanations are based on the orientation relationship shown in the drawings, which are used for convenient description of the position relationship of the equipment in the application.

[0056] The general concept of the application is to place the straw filler water purification device in the pond, river, ditch with sewage; the straw filler water purification device includes a floating bed, a floating bed, a plant straw filler container, a water body, and a filler to form a biological membrane, adsorb and decompose pollutants in water, and a plant straw filler container configured with an aeration device to improve the efficiency of sewage purification. Example 1

[0057] Please refer to Figure 1 , 2 The application provides a straw filler water purification device, which includes a floating bed 100, an aeration device 200, a plant straw filler container and a power supply device.

[0058] Please refer to Figure 3 , the floating bed 100 includes a floating bed body 101, a mounting through hole 102, a frame 103, a planting pot placing through hole 104 and a connecting ring 105.

[0059] The floating bed body 101 is wrapped by a straw mat made of aquatic plant straw such as reed straw, rice straw and the like by a straw weaving machine. The floating bed body 101 is fixedly connected with the frame 103, and the floating bed body 101 is surrounded by the frame 103. The frame 103 is provided with a planting pot placing through hole 104 for placing a planting pot (not shown in the figure) to facilitate the cultivation of small aquatic plants such as money grass and mushroom grass, and form a hierarchical aquatic plant ecosystem.

[0060] The center of the floating bed body 101 is provided with a mounting through hole 102. The floating bed body 101 and the mounting through hole 102 are fixedly connected. The mounting through hole 102 is used for mounting an aeration device 200 and a plant straw filler container.

[0061] The mounting through hole 102 and the frame 103 are made of polyethylene, polypropylene or polyurethane foam composite, which can ensure the strength of the floating bed 100 and the buoyancy of the floating bed 100 to support the operation of the entire device.

[0062] The connecting ring 105 is arranged on the side edge of the frame 103. The connecting ring 105 is used for connecting the floating bed with other floating beds.

[0063] Please refer to Figures 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.

[0064] The main aeration pipe 206, the branch aeration pipe 207, the aeration pipe frame 208 and the tail exhaust pipe 209 are of 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. The branch aeration pipe 207 is a plurality of pipes. The plurality of branch aeration pipes 207 are axially distributed on the outer side surface of the main aeration pipe 206. One end of all the branch aeration pipes 207 is fixedly connected with the main aeration pipe 206. The main aeration pipe 206, the branch aeration pipe 207 and the tail exhaust pipe 209 are mutually penetrated to form a gas passage. The other end of all the branch aeration pipes 207 is fixedly connected with the aeration pipe frame 208. The gas outlets of all the branch aeration pipes 207 extend out of the aeration pipe frame 208. The aeration pipe frame 208 has a frame hole between two adjacent frame rods. The tail exhaust pipe 209 is located at one end of the main aeration pipe 206 away from the gas inlet. The inner side wall of the upper end of the aeration pipe frame 208 is provided with an internal thread.

[0065] The connecting piece 205 is used for the connection between the aerator 201 and the aeration pipe frame 208, the aerator 201 is provided with a gas outlet (not shown in the figure), the connecting piece 205 is provided with a gas through hole penetrating through the connecting piece 205, the connecting piece 205 is sequentially provided with a sleeving pipe column 2051, a first disc 2052, a second disc 2053 and an outer threaded pipe column 2054 from top to bottom, the sleeving pipe column 2051 is matched with the gas outlet of the aerator 201, the gas outlet of the aerator 201 is sleeved on the sleeving pipe column 2051, the diameter of the first disc 2052 is larger than the diameter of the mounting through hole 102, the diameter of the second disc 2053 is slightly smaller than the diameter of the mounting through hole 102, the outer thread on the outer threaded pipe column 2054 is matched with the inner thread of the aeration pipe frame 208 and is threadedly connected with the aeration pipe frame 208.

[0066] The gas inlet on the main aeration pipe 206 is in communication with the gas through hole on the connecting piece 205.

[0067] The tail exhaust pipe 209 is in the shape of a cone, and the gas outlet is provided with a filter screen.

[0068] The heavy block 210 is connected on the bottom of the aeration pipe frame 208 and the tail exhaust pipe 209, and the heavy block 210 can avoid the damage to the device caused by the too large water flow disturbance when the sewage is in and out.

[0069] The bottom of the aerator 201 is fixedly connected with the first disc 2052 of the connecting piece 205, the shroud 202 is arranged on the aerator 201, and the shroud 202 is fixedly connected with the lifting ring 203.

[0070] The plant straw filler container is used for containing plant straw fillers, and includes a first plant straw filler container 310 and a second plant straw filler container 320.

[0071] Please refer to Figure 7 and 9 The first plant straw filler container 310 is a containing space surrounded by the aeration pipe frame 208 and the mesh 311 arranged on the frame hole of the aeration pipe frame 208, and the water and the air sprayed by the aeration device 200 can enter the first plant straw filler container 310 through the mesh holes of the mesh 311; the partition plate 312 is detachably clamped on the outer side wall of the main aeration pipe 206, the partition plate 312 is composed of two half partition plates provided with dovetail grooves and dovetail blocks correspondingly, which facilitates assembly in a small space, the partition plate 312 divides the containing space into several containing subspaces, fully utilizes the space, can hold more plant straw fillers 500, improves the water flow and the specific surface area, and avoids that the contained plant straw fillers 500 are all stacked together.

[0072] The number of the partition plates 312 is multiple, and in the embodiment, three partition plates 312 are used.

[0073] Please refer toFigure 10 The second plant straw filler container 320 is in the shape of an inverted bowl, with a receiving cavity between its upper surface and lower surface. The center connecting ring 321 and the edge closing ring 323 are provided between the upper surface and the lower surface, and have support skeletons. The upper surface and the lower surface are covered with a water-permeable material, such as fabric, stainless steel woven mesh, or plastic mesh, through which water and air from the air sparging device 200 can enter the second plant straw filler container 320. The center connecting ring 321 is provided with a feeding door 322 for feeding and removing plant straw fillers. The center connecting ring 321 and the edge closing ring 323 are made of a material that can elastically deform, such as rubber or plastic.

[0074] The center connecting ring 321 of the second plant straw filler container 320 is sleeved outside the air sparging pipe frame 208 and the mesh 311. The center connecting ring 321 and the edge closing ring 323 are made of a material that can elastically deform. By pulling the center connecting ring 321, the support air sparging pipe 207 that extends outside the air sparging pipe frame 208 can be passed through. The center connecting ring 321 made of a material that can elastically deform can constrain the mesh 311 arranged on the frame hole of the air sparging pipe frame 208.

[0075] The number of the second plant straw filler containers 320 is multiple. In this embodiment, three second plant straw filler containers 320 are used.

[0076] The radius of the lower opening of the second plant straw filler container 320 is greater than the extension range of the support air sparging pipe 207. When the oxygen-containing bubbles sparged by the support air sparging 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.

[0077] The first plant straw filler container 310 and the second plant straw filler container 320 are filled with plant straw fillers 500, the plant straw fillers 500 are prepared from aquatic plant straws into MBBR fillers suitable for sewage treatment, have the advantages of air permeability, mechanical toughness, and nutrient components such as cellulose and other organic matters, the aquatic plant straws adopt common rice straws and reed straws, the rice reed straw composite filler is prepared, the rice reed straw composite filler provides effective carbon source for microbial adhesion and biofilm formation, and the degradability of the rice reed straw composite filler itself and the energy saving effect provide new ideas for sewage treatment.

[0078] Please refer to Figure 8 The plant straw filler 500 is prepared from the rice straw and reed straw composite sheet filler after MBBR filler processing, the MBBR filler processing is the primary treatment of the MBBR equipment, and the main structure includes: a rice straw filler layer 501 and a reed straw filler layer 502.

[0079] The specific processing procedure of the plant straw filler 500 is as follows:

[0080] 1. Remove other roots and stems from the aquatic plant straws (rice and reed);

[0081] 2. Rinse the surface with distilled water and place it in a 105 DEG C oven for drying for 30 minutes;

[0082] 3. Keep in an 80 DEG C oven for 24 hours until the mass no longer changes;

[0083] 4. Stretch after toughness test;

[0084] 5. Cut the filler to 5-10 mm;

[0085] 6. Place the rice and reed fillers in the MBBR equipment respectively for 20 days, 15 min of water inlet, 2 h of aeration, 2 h of stirring, 2 h of aeration, 2 h of stirring, 2 h of sedimentation, 15 min of water outlet, and 1.5 h of idling, two cycles are operated every day, and a certain amount of activated sludge is discharged in the water outlet stage to maintain the sludge age at 8-10 days;

[0086] 7. Take out the rice and reed fillers and dry them;

[0087] 8. The rice and reed fillers are respectively pressed into the rice straw filler layer 501 and the reed straw filler layer 502.

[0088] 9. Use a layer of rice straw filler layer 501 in the middle, and place a layer of reed straw filler layer 502 above and below, and press the composite plant straw filler 500 with an adhesive, and the mass ratio of the three layers is maintained between 1:2:1 and 1:1:1.

[0089] 10. Cut the whole plant straw filler 500 into small pieces of appropriate size, and shear and break it to form broken fillers with a length of 5-10 mm and a width of 3-6 mm for standby.

[0090] Because the cellulose and hemicellulose in the straw materials of rice and reed provide carbon sources for microbial attachment, resulting in the attachment of aerobic bacterial biofilm to the straw materials, the prepared filler is an excellent filler for sewage purification.

[0091] Laboratory control test:

[0092] The results of the control decontamination and purification test of the rice and reed composite plant straw filler 500, rice straw filler, reed straw filler and blank group are as follows:

[0093] After the MBBR simulation equipment in the laboratory is stabilized, the effluent water quality is determined, and the filler size and other variables remain unchanged during the filler test, and finally the representative experimental results are obtained:

[0094] The average concentration of effluent COD (chemical oxygen demand) of the rice, reed straw experimental filler and plant straw filler 500 reactor is 7.56 mg / L, 15.32 mg / L and 6.12 mg / L, respectively, and the average removal rate of COD is 98.45%, 96.85% and 98.74%, respectively. Compared with the blank group (effluent concentration 19.33 mg / L, average removal rate 96.03%), the TP treatment effect is effectively improved.

[0095] The average concentration of effluent TP (total phosphorus) of the rice, reed straw experimental filler and plant straw filler 500 reactor is 0.66 mg / L, 0.65 mg / L and 0.63 mg / L, respectively, and the average removal rate of TP is 95.34%, 95.78% and 95.86%, respectively. Compared with the blank group (effluent concentration 0.70 mg / L, average removal rate 95.13%), the TP treatment effect is effectively improved.

[0096] The average concentration of effluent TN (total nitrogen) of the reactor filled with rice, reed straw experimental filler and plant straw filler 500 is 6.61 mg / L, 11.34 mg / L and 6.04 mg / L respectively, and the average removal rate of TN is 83.57%, 66.26% and 84.73% respectively. Compared with the blank group (effluent concentration is 12.25 mg / L, and the average removal rate is 65.06%), it can be seen that the TN treatment effect is effectively improved.

[0097] The same step test is performed on plant straw fillers 500 of different sizes, 1-3 mm, 5-7 mm, 9-11 mm and 5-10 mm (the width is kept at 3-6 mm). The test results show that, under the premise of ensuring mechanical toughness, application duration and effluent effect, the size of 5-10 mm is the best.

[0098] Therefore, the composite material will have the advantages of both, and the general index of water treatment effect is good.

[0099] At the same time, the mechanical toughness of the plant straw filler 500 composed of rice and reed is the best.

[0100] The main function of the plant straw filler 500 composed of rice and reed is to provide carbon source, provide biological membrane carrier, microbial attachment and microbial food web ecological construction to provide high-quality purification and degradation efficiency.

[0101] In subsequent replacement, treatment and recycling, the plant straw filler 500 is easy to degrade and treat. After water treatment, N and P elements in water are attached to the surface of the straw in the form of salts under the action of microorganisms, which can be used as nutrient fertilizer in the process of soil improvement and resource utilization in the subsequent treatment process.

[0102] Please refer to Figure 1 and 2 , the power supply device includes a photovoltaic panel 401, the photovoltaic panel 401 is fixedly connected to the floating bed main body 101 by a support, the photovoltaic panel 401 is electrically connected with a charge-discharge controller, a power storage unit and a voltage stabilizing module (the charge-discharge controller, the power storage unit and the voltage stabilizing module are not shown in the figure), and provides working power for the aerator 201. The power output end of the power supply device is electrically connected with the aerator 201, and a power switch (not shown in the figure) is arranged between the power output end and the aerator 201. When the power switch is opened, the aerator 201 is powered on and works. When the power switch is closed, the aerator 201 loses power and stops working.

[0103] The aerator 201 sprays air, ozone or a mixture of air and ozone into the water.

[0104] The photovoltaic panel 401 is installed on the floating bed main body 101, provides working power for the aerator 201, moves with the floating bed main body 101, and saves the cumbersome external power supply line.

[0105] The assembly steps of the straw filler water purification device are as follows:

[0106] S1: filling the plant straw filler

[0107] S1-1: opening the feeding door 322 on the second plant straw filler container 320, filling the plant straw filler 500 into the containing cavity of the second plant straw filler container 320, and closing the feeding door 322;

[0108] S1-2: opening the mesh 311 on the first plant straw filler container 310, filling the plant straw filler 500 into each containing sub-space of the first plant straw filler container 310, and covering the mesh 311;

[0109] S1-3: sleeving the second plant straw filler container 320 on the aeration pipe frame 208, and constraining the mesh 311.

[0110] S2: installing the aerator

[0111] S2-1: sleeving the gas output port of the aerator 201 on the sleeving pipe column 2051 of the connecting piece 205; and fixedly connecting the bottom of the aerator 201 with the first disc 2052 of the connecting piece 205;

[0112] S2-2: sleeving the shroud 202 on the aerator 201.

[0113] S3: connecting the aerator with the aeration pipe

[0114] S3-1: lifting the lifting ring 203, and inserting the second disc 2053 of the connecting piece 205 into the mounting through hole 102 of the floating bed 100;

[0115] S3-2: threadedly connecting the outer threaded pipe column 2054 of the connecting piece 205 with the inner thread on the inner side wall of the upper end of the aeration pipe frame 208.

[0116] S4: installing the power supply device

[0117] S4-1: fixedly connecting the photovoltaic panel 401 on the floating bed 100;

[0118] S4-2: circuit connecting the photovoltaic panel 401 with the charge-discharge controller, the power storage unit and the voltage stabilizing module;

[0119] S4-3: circuit connecting the power output end of the voltage stabilizing module with the power input end of the aerator 201. Embodiment 2

[0120] Please refer to Figure 11 The application also provides a sewage purification treatment method for water areas by using the straw filler water purification device.

[0121] The net aeration system 600 comprises a large aerator 601, a micro-porous aeration head 602 and a floating frame 603.

[0122] The net aeration system 600 adopts an underwater net frame aeration mode; the micro-porous aeration head 602 is arranged underwater together with the pipeline connected with the large aerator 601; the floating frame 603 is arranged on the water surface of the water area and is connected with the upright post fixed to the water bottom 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 area of the water area.

[0123] The sewage purification treatment method comprises the following steps:

[0124] Step one S1: pipeline arrangement of the aeration system 600

[0125] S1-1: installing the large aerator 601 and the circuit connecting the large aerator 601 and the power supply on the bank of the water area;

[0126] S1-2: evenly installing the plurality of micro-porous aeration heads 602 on the pipeline;

[0127] S1-3: arranging the pipeline in step S1-2 underwater;

[0128] S1-4: connecting the aeration pipeline with the large aerator 601;

[0129] Step two S2: arrangement of the floating frame 603

[0130] S2-1: inserting the plurality of upright posts into the water bottom foundation;

[0131] S2-2: hanging the floating frame 603 on the upright posts;

[0132] Step three S3: arrangement of the straw filler water purification device

[0133] Arranging the straw filler water purification device in the working state within the boundary of the floating frame 603;

[0134] Step four S4: starting the aeration system 600 to work

[0135] Opening the large aerator 601 to spray air, ozone or the mixed gas of air and ozone into the water within the boundary;

[0136] Step five S5: monitoring the water quality of the water area

[0137] Monitoring the water quality of the water area, if the water quality meets the requirements, stopping the aeration system 600 and the straw filler water purification device from working; otherwise, continuing the aeration system 600 and the straw filler water purification device to work.

[0138] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and alternatives can be made thereto without departing from the spirit and scope of the application as defined in the following claims and their equivalents.

Claims

1. A straw filler water purification device, characterized in that: It includes a floating bed (100), an aeration device (200), a plant straw filler container, and a power supply device; A plant straw filler container, used for accommodating 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 compressed filler of rice straw and reed straw; An 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); 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). 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 main aeration pipe (206) The branch aeration pipes (207) and the tail exhaust pipe (209) are interconnected to form a gas channel. The other ends of all the branch aeration pipes (207) are fixedly connected to the aeration pipe frame (208), and the gas outlets of all the branch aeration pipes (207) extend outside 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; 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) utilizes an aeration tube frame (208) and is provided with a mesh (311) on the frame hole of the aeration tube frame (208) to form a receiving space. A plurality of partition plates (312) are detachably connected to the outer wall of the main aeration tube (206). The second plant straw filler container (320) is a plurality of containers, and the overall structure is in the shape of an inverted bowl, wherein 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, and the central connecting ring (321) is sleeved on the outer side of the aeration pipe frame (208) and the mesh (311) to constrain the mesh (311); 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 the oxygen-containing bubbles ejected from the branch aeration pipe (207) are covered by the second plant straw filler container (320) when they rise.

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 the frame (103). The floating bed body (101) is surrounded by the frame (103). The frame (103) is provided with a through hole (104) for placing a planting pot. The center position of the floating bed body (101) is provided with an installation through hole (102). The floating bed body (101) and the installation 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 with other floating beds.

3. The straw-filled water purification device according to claim 1, characterized in that: The connecting piece (205) is used to connect the aerator (201) and the aeration pipe frame (208). The aerator (201) is provided with a gas outlet, and the connecting piece (205) is provided with a gas through hole running through it. 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), and 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 provided 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 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).

5. The straw-filled water purification device according to any one of claims 1 to 4, characterized in that: The power supply device is electrically connected to the aerator (201) and provides working power for the aerator (201). The power supply device comprises 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. The photovoltaic panel (401) is electrically connected to the charge and discharge controller, the power storage unit and the voltage stabilizing module.

6. A method for purifying sewage in water areas using the straw-filled water purification device according to claim 5, 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 reticulated aeration system (600) adopts an underwater grid aeration mode; a plurality of microporous aeration heads (602) are arranged underwater together with a pipeline 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 the underwater foundation, defining a boundary for 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: Lay 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: Insert multiple piles into the underwater foundation; S2-2: The floating frame (603) is hung on the pile; Step 3 S3: Laying out straw filler water purification device A straw filler water purification device in working condition is placed 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 operation of the aeration system (600) and the straw filler water purification device is suspended; otherwise, the aeration system (600) and the straw filler water purification device continue to operate.

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