Comprehensive treatment device for ecological environment

Abstract

The invention belongs to the field of water area ecological environment treatment, and provides an ecological environment comprehensive treatment device which comprises a floating platform, a plurality of floating bags are arranged on the front face and the back face of the floating platform, and two fixing plates are fixedly connected to the left side of the floating platform; the first treatment assembly is arranged above the floating platform and comprises two L-shaped seats fixedly connected to the top of the floating platform, square plates are fixedly connected to the tops of the two L-shaped seats, and a driving motor is arranged on the left side of one square plate; according to the device, through cooperation of a smashing cutter of the first treatment assembly and a shifting device, weeds and algae floating objects on the water surface can be efficiently smashed, and then smashing-conveying-compression storage treatment is completed through the conveying assembly and the recycling assembly; meanwhile, the second treatment assembly forms a three-stage water quality purification system through aeration oxygenation, double-layer filter screen physical filtration and biological membrane microbial degradation, so that cooperative treatment of impurity removal and water quality improvement is realized, and vicious circle of impurity accumulation and water quality deterioration is avoided.

Description

Technical Field

[0001] The invention belongs to the field of water ecological environment management, and specifically relates to a comprehensive ecological environment management device. Background Art

[0002] With rapid economic development, accelerated urbanization, growing river basin populations, and the continuous improvement of living standards, more and more water bodies containing pollutants and suspended solids are entering river basins through various pathways. These levels far exceed their capacity, leading to river pollution. Damage to river ecosystems can lead to the appearance of impurities, excessive algae growth, and decreased water clarity, seriously impacting the survival of aquatic plants and animals. Therefore, water treatment is necessary. However, manual cleaning is time-consuming and labor-intensive, necessitating the use of treatment devices to manage water sources.

[0003] At present, most of the comprehensive ecological environment management devices cannot effectively crush and recycle weeds and algae floating on the water surface in a timely manner. They are prone to accumulation, leading to the deterioration of the ecological environment of the water body, affecting the fluidity of the water body and the landscape effect. In addition, traditional water purification methods mostly rely solely on physical filtration or chemical treatment, lacking a multi-stage purification system that combines aeration and oxygenation, physical filtration and biodegradation. The removal effect of organic matter and nitrogen and phosphorus pollutants in the water body is limited, making it difficult to achieve deep purification of the water quality. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an ecological environment comprehensive management device to solve the problem of environmental deterioration caused by weeds and algae that are difficult to deal with in the prior art.

[0005] An ecological environment comprehensive management device, comprising:

[0006] A floating platform, wherein a plurality of floating bags are provided on both the front and back sides of the floating platform, and two fixing plates are fixedly connected to the left side of the floating platform;

[0007] The first governance component is arranged above the floating platform and includes two L-shaped seats fixedly connected to the top of the floating platform, the tops of the two L-shaped seats are fixedly connected to a square plate, a driving motor is provided on the left side of one of the square plates, the output end of the driving motor and the left side of the other square plate are rotatably connected to a cross bar through bearings, the left sides of the two L-shaped seats are fixedly connected to the cross plate, the bottoms of the two cross plates are respectively rotatably connected to a first rotating rod and three second rotating rods through bearings, the outer rings of the first rotating rods are each provided with a first synchronous pulley, a second synchronous pulley and a third synchronous pulley, the outer rings of the second rotating rods are each provided with a fourth synchronous pulley, the bottoms of the two first rotating rods and four of the second rotating rods are fixedly connected to a crushing knife, and the outer rings of the other two second rotating rods are provided with a toggle.

[0008] Preferably, the left sides of the two cross bars are fixedly connected with a first bevel gear, the tops of the first rotating rods are fixedly connected with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0009] Preferably, the outer rings of the first synchronous pulley, the second synchronous pulley, the third synchronous pulley and the fourth synchronous pulley are all movably connected with belts, the connections between the belts and the first synchronous pulley, the second synchronous pulley and the third synchronous pulley and the fourth synchronous pulley are all frosted, the crushing knives do not contact each other and are separated by a certain distance, and the conveying assembly is arranged above the floating platform.

[0010] Preferably, the conveying assembly includes a rotating motor fixedly connected to the front side of one of the L-shaped seats, and a long rod is rotatably connected between the output end of the rotating motor and the two fixed plates through bearings. The outer rings of the two long rods are equipped with conveyor belts, and a plurality of drainage holes are opened through the top of the conveyor belt.

[0011] Preferably, both sides of the conveyor belt are equipped with spacer belts, the left side of the conveyor belt is not in contact with the crushing knife and is separated by a distance with the same diameter as the fixed plate, and a recovery component is arranged above the floating platform.

[0012] Preferably, the recovery component includes a recovery box fixedly connected to the middle of the top of the floating platform, one side of the recovery box is fixedly connected to a support frame, hydraulic rods are provided on both sides of the top of the support frame, the output ends of the two hydraulic rods are fixedly connected to pressure plates, the right side of the recovery box is connected to a door body through a hinge, the right side of the door body is fixedly connected to a handle, and a second management component is arranged above the floating platform.

[0013] Preferably, the second treatment component includes two purification boxes fixedly connected to the top of the floating platform, an aerator is provided on the right side of one of the purification boxes, a first delivery pipe is connected between the aerator and the other purification box, a second delivery pipe is connected to one side of the first delivery pipe, a water pump is provided on the right side of the other purification box, the water inlet end of the water pump is connected to the water pump pipe, the water outlet end of the water pump is connected to the first water delivery pipe, the left side of the first water delivery pipe is connected to the second water delivery pipe, and the left side of the purification box is connected to a drain pipe.

[0014] Preferably, the inner walls of the two purification boxes are provided with slide grooves all around, the inner cavities of the slide grooves are provided with sliders, one side of each two sliders is fixedly connected with a fixing bar, and between each two fixing bars are arranged a first filter screen, a second filter screen and a biofilm purification layer from top to bottom in sequence, the top of the purification box is provided with a box cover, and the bottom of the box cover is fixedly connected with mounting blocks all around.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses the pulverizer and paddle in the first treatment component to efficiently crush weeds and algae floating on the water surface, and then completes the "crushing-transportation-compression storage" process through the conveying component and the recovery component. At the same time, the second treatment component forms a three-stage water purification system through aeration and oxygenation, double-layer filter physical filtration and biofilm microbial degradation, achieving the coordinated treatment of "debris removal and water quality improvement", avoiding the vicious cycle of debris accumulation and water quality deterioration.

[0017] 2. The present invention adopts a "bevel gear meshing + synchronous pulley transmission" structure through the first treatment component. The frosted belt contact surface enhances friction, ensuring the synchronous and stable rotation of multiple axes and low power loss. When the toggle rotates, it can disturb the water flow to make debris gather in the crushing knife area, and enhance the fluidity of the water body. Cooperating with the aerator to increase oxygen, it creates favorable conditions for microorganisms to degrade pollutants and improve treatment efficiency.

[0018] 3. The present invention uses the groove and slider design on the inner wall of the purification box, so that the filter screen and biofilm purification layer can be easily pulled out and replaced, reducing maintenance costs; the hydraulic pressure plate in the recovery box compresses debris to reduce storage space, and the door design is convenient for cleaning; the float bags on the front and back of the floating platform provide stable buoyancy, and the left fixed plate can be connected to auxiliary equipment. It is suitable for different water environments such as lakes and rivers and has strong scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1A three-dimensional schematic diagram of the structure of the first governance component;

[0021] Figure 3 For the present invention Figure 2 A three-dimensional schematic diagram of the enlarged structure at point A;

[0022] Figure 4 For the present invention Figure 1 A three-dimensional schematic diagram of the conveying component structure;

[0023] Figure 5 For the present invention Figure 1 A three-dimensional schematic diagram of the recycling component structure;

[0024] Figure 6 For the present invention Figure 1 A three-dimensional schematic diagram of the structure of the second governance component;

[0025] Figure 7 It is a three-dimensional schematic diagram of the internal structure of the purification box of the present invention;

[0026] Figure 8 It is a three-dimensional schematic diagram of the floating platform structure of the present invention.

[0027] In the picture:

[0028] 1. Floating platform; 101. Floating bladder; 102. Fixed plate; 2. First treatment component; 201. L-shaped seat; 202. Square plate; 203. Drive motor; 204. Crossbar; 205. First bevel gear; 206. Crossbar; 207. First rotating rod; 208. Second rotating rod; 209. Second bevel gear; 210. First synchronous pulley; 211. Second synchronous pulley; 212. Third synchronous pulley; 213. Fourth synchronous pulley; 214. Belt; 215. Crushing blade; 216. Toggle; 3. Conveying component; 301. Rotating motor; 302. Long rod; 303. Conveyor belt; 304. Spacer belt; 305 , drainage hole; 4, recovery component; 401, recovery box; 402, support frame; 403, hydraulic rod; 404, pressure plate; 405, door body; 406, handle; 5, second treatment component; 501, purification box; 502, aerator; 503, first delivery pipe; 504, second delivery pipe; 505, water pump; 506, water pipe; 507, first water supply pipe; 508, second water supply pipe; 509, slide; 510, slider; 511, fixing bar; 512, first filter screen; 513, second filter screen; 514, biofilm purification layer; 515, box cover; 516, mounting block; 517, drainage pipe. DETAILED DESCRIPTION

[0029] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0030] Example 1:

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, the present invention provides a comprehensive ecological environment management device, comprising:

[0032] The floating platform 1 has multiple floating bags 101 on both the front and back sides. The left side of the floating platform 1 is fixedly connected to two fixed plates 102.

[0033] The first treatment component 2 is arranged above the floating platform 1, and includes two L-shaped seats 201 fixedly connected to the top of the floating platform 1, and the tops of the two L-shaped seats 201 are fixedly connected to square plates 202, and a driving motor 203 is provided on the left side of one of the square plates 202, and the output end of the driving motor 203 and the left side of the other square plate 202 are rotatably connected to a cross bar 204 through bearings, and the left sides of the two L-shaped seats 201 are fixedly connected to a cross plate 206, and the bottoms of the two cross plates 206 are respectively rotatably connected to a first rotating rod 207 and three second rotating rods 208 through bearings, the outer rings of the first rotating rod 207 are each fitted with a first synchronous pulley 210, a second synchronous pulley 211 and a third synchronous pulley 212, the outer rings of the second rotating rod 208 are each fitted with a fourth synchronous pulley 213, and the two first rotating rods 207 and their The bottoms of the four second rotating rods 208 are fixedly connected to a crushing knife 215, and the outer rings of the other two second rotating rods 208 are provided with a toggle 216. The left sides of the two cross bars 204 are fixedly connected to the first bevel gear 205, and the tops of the first rotating rods 207 are fixedly connected to the second bevel gear 209. The second bevel gear 209 is meshed with the first bevel gear 205. The outer rings of the first synchronous pulley 210, the second synchronous pulley 211, the third synchronous pulley 212 and the fourth synchronous pulley 213 are movably connected with a belt 214. The connection between the belt 214 and the first synchronous pulley 210, the second synchronous pulley 211 and the third synchronous pulley 212 and the fourth synchronous pulley 213 are all frosted. The crushing knives 215 do not contact each other and are separated by a certain distance. The conveying assembly 3 is arranged above the floating platform 1.

[0034] As can be seen from the above, the driving motor 203 can drive the crossbar 204 to rotate, and the first bevel gear 205 on the crossbar 204 is engaged with the second bevel gear 209 on the top of the first rotating rod 207, so that the first rotating rod 207 rotates, and the first synchronous pulley 210, the second synchronous pulley 211, and the third synchronous pulley 212 on the outer ring of the first rotating rod 207 drive the fourth synchronous pulley 213 on the second rotating rod 208 to rotate through the belt 214, thereby allowing the crushing knife 215 and the toggle 216 to operate, and the crushing knife 215 During operation, weeds in the water area can be crushed. The stirrer 216 can stir the water flow and guide the crushed weeds to move to the conveying component 3. The frosted setting at the connection between the belt 214 and the first synchronous pulley 210, the second synchronous pulley 211, the third synchronous pulley 212 and the fourth synchronous pulley 213 can increase the friction of rotation and ensure the stability of the transmission. The crushing knives 215 do not contact each other and maintain a certain distance, which can avoid mutual collision and damage, thereby ensuring the normal operation of the first treatment component 2.

[0035] Example 2:

[0036] Please refer to Figure 1 、 Figure 4 and Figure 5 As shown, the conveying assembly 3 includes a rotating motor 301 fixedly connected to the front of one of the L-shaped seats 201. A long rod 302 is rotatably connected between the output end of the rotating motor 301 and the two fixed plates 102 through a bearing. The outer rings of the two long rods 302 are covered with a conveyor belt 303. A plurality of drainage holes 305 are opened on the top of the conveyor belt 303. Both sides of the conveyor belt 303 are covered with a spacer belt 304. The left side of the conveyor belt 303 does not contact the crushing knife 215 and is separated by a distance with the same diameter as the fixed plate 102. Component 4, the recovery component 4 is arranged above the floating platform 1, and the recovery component 4 includes a recovery box 401 fixedly connected to the middle of the top of the floating platform 1, and a support frame 402 is fixedly connected to one side of the recovery box 401. Hydraulic rods 403 are provided on both sides of the top of the support frame 402, and the output ends of the two hydraulic rods 403 are fixedly connected to pressure plates 404. The right side of the recovery box 401 is connected to a door body 405 through a hinge, and the right side of the door body 405 is fixedly connected to a handle 406. The second treatment component 5, the second treatment component 5 is arranged above the floating platform 1.

[0037] As can be seen from the above, the rotating motor 301 drives the long rod 302 to rotate, and the long rod 302 drives the conveyor belt 303 to operate. When the conveyor belt 303 is operating, the crushed weeds are transported to the recycling box 401, and the drainage holes 305 on the top of the conveyor belt 303 can discharge the moisture carried by the debris and weeds during the transmission process. The partitions 304 on both sides can prevent the debris and weeds from falling from both sides of the conveyor belt 303. A specific distance is maintained between the conveyor belt 303 and the crushing knife 215 to ensure that the debris and weeds are smoothly transported. The recycling box 401 is used to collect the crushed debris. The hydraulic rod 403 on the support frame 402 drives the pressure plate 404 to compress the debris in the recycling box 401, so as to increase the storage capacity of the recycling box 401 and subsequent processing. The door body 405 and the handle 406 facilitate the opening and closing operation of the recycling box 401 to centrally process the weeds and debris.

[0038] Example 3:

[0039] Please refer to Figure 1 、 Figure 6 and Figure 7 As shown, the second treatment component 5 includes two purification boxes 501 fixedly connected to the top of the floating platform 1, an aerator 502 is provided on the right side of one of the purification boxes 501, a first delivery pipe 503 is sleeved between the aerator 502 and the other purification box 501, a second delivery pipe 504 is sleeved on one side of the first delivery pipe 503, a water pump 505 is provided on the right side of the other purification box 501, a water inlet end of the water pump 505 is sleeved with a water pump pipe 506, a water outlet end of the water pump 505 is sleeved with a first water delivery pipe 507, and the left side of the first water delivery pipe 507 is sleeved. There is a second water supply pipe 508, and a drainage pipe 517 is connected to the left side of the purification box 501. The inner walls of the two purification boxes 501 are provided with chutes 509, and the inner cavity of the chute 509 is provided with a slider 510. One side of each two sliders 510 is fixedly connected with a fixing bar 511, and between each two fixing bars 511 are arranged a first filter screen 512, a second filter screen 513 and a biofilm purification layer 514 from top to bottom. The top of the purification box 501 is provided with a box cover 515, and the bottom of the box cover 515 is fixedly connected with mounting blocks 516.

[0040] As can be seen from the above, the water pump 505 extracts the water to be purified through the water pump pipe 506, and delivers it to the purification box 501 through the first water delivery pipe 507 and the second water delivery pipe 508. The water is filtered through the first filter 512 and the second filter 513 in the purification box 501 to remove larger impurities, and then processed by the biofilm purification layer 514 to further purify the water quality. At the same time, the aerator 502 delivers air to the purification box 501 through the first delivery pipe 503 and the second delivery pipe 504 to increase the water The oxygen content is conducive to purifying the water entering the purification box 501 again. The slide groove 509 and the slider 510 on the inner wall of the purification box 501 can enable the fixing bar 511 to drive the first filter screen 512 and the second filter screen 513 and the biofilm purification layer 514 to be easily installed and disassembled, which is convenient for maintenance and replacement. The box cover 515 is connected to the purification box 501 through the mounting block 516, which can close the purification box 501 and protect the internal purification components. After the water purification is completed, the drain pipe 517 is used to discharge the purified water.

[0041] Working principle: After the driving motor 203 is started, it drives the crossbar 204 to rotate, and the first bevel gear 205 at the left end of the crossbar 204 meshes with the second bevel gear 209 at the top of the first rotating rod 207 to transmit power to the first rotating rod 207. When the first rotating rod 207 rotates, the first synchronous pulley 210, the second synchronous pulley 211, and the third synchronous pulley 212 on its outer ring drive the fourth synchronous pulley 213 on the second rotating rod 208 to rotate through the belt 214. Then, the crushing knives 215 at the bottom of the two first rotating rods 207 and the four second rotating rods 208 rotate at high speed to cut and crush the weeds and algae floating on the water surface. The outer rings of the other two second rotating rods 208 The toggle 216 rotates synchronously to disturb the water flow, causing the debris to gather in the area of ​​the crushing knife 215 and the conveying component 3, while increasing the contact area between the water and the air; then the motor 301 is rotated to drive the long rod 302 to rotate, driving the conveyor belt 303 to run, and the crushed weeds gathered at the conveyor belt 303 are transported to the recycling box 401, and the partitions 304 on both sides of the conveyor belt 303 prevent the crushed debris from slipping, and at the same time, the drainage holes 305 on the top of the conveyor belt 303 can drain the moisture in the debris, reducing the transmission load, and the left side of the conveyor belt 303 maintains a specific distance from the crushing knife 215 to avoid interference and ensure that the debris is smoothly connected; the recycling box 401 receives the conveyor belt 30 3, the hydraulic rod 403 on the support frame 402 drives the pressing plate 404 to move downward, compressing the debris in the box and reducing the volume. After the recycling box 401 reaches a certain amount of weeds and debris storage, the door 405 on the right side of the recycling box 401 is connected by a hinge, and the door can be opened with the handle 406 to facilitate cleaning of the compressed weeds and debris. At this time, the water pump 505 draws the purified water through the water pipe 506, and sends it into the two purification boxes 501 through the first water supply pipe 507 and the second water supply pipe 508. When entering, it first passes through the first filter 512 and the second filter 513 to remove suspended particles and larger impurities, and then passes through the biofilm purification layer 514 to remove the attached water. The microorganisms degrade organic matter and absorb nitrogen and phosphorus nutrients to achieve deep water purification. The aerator 502 injects air into the purification box 501 through the first delivery pipe 503 and the second delivery pipe 504 to increase the oxygen content of the water for further purification. The purified water is discharged from the drain pipe 517 and flows back to the water area. When maintenance is required, the box cover 515 is pulled up and down through the mounting block 516 to open the purification box 501. Since the slide groove 509 on the inner wall of the purification box 501 cooperates with the slider 510, the fixing bar 511 can be pulled upward to drive the first filter 512, the second filter 513 and the biofilm purification layer 514 to be drawn out along the slide groove 509 for replacement and cleaning.

[0042] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A comprehensive ecological environment management device, characterized in that: include: A floating platform (1), wherein a plurality of floating bags (101) are provided on both the front and back sides of the floating platform (1), and two fixing plates (102) are fixedly connected to the left side of the floating platform (1); The first treatment component (2) is arranged above the floating platform (1) and comprises two L-shaped seats (201) fixedly connected to the top of the floating platform (1), the tops of the two L-shaped seats (201) are fixedly connected to a square plate (202), a driving motor (203) is arranged on the left side of one of the square plates (202), the output end of the driving motor (203) and the left side of the other square plate (202) are rotatably connected to a cross bar (204) through a bearing, the left sides of the two L-shaped seats (201) are fixedly connected to a cross plate (206), and the two cross plates (206) are fixedly connected to the tops of the two L-shaped seats (201). The bottom of the plate (206) is rotatably connected to a first rotating rod (207) and three second rotating rods (208) through bearings. The outer rings of the first rotating rods (207) are each equipped with a first synchronous pulley (210), a second synchronous pulley (211) and a third synchronous pulley (212). The outer rings of the second rotating rods (208) are each equipped with a fourth synchronous pulley (213). The bottoms of the two first rotating rods (207) and four of the second rotating rods (208) are fixedly connected with a crushing knife (215). The outer rings of the other two second rotating rods (208) are provided with a toggle (216).

2. The comprehensive ecological environment management device according to claim 1, characterized in that: The left sides of the two cross bars (204) are fixedly connected to a first bevel gear (205), the tops of the first rotating rods (207) are fixedly connected to a second bevel gear (209), and the second bevel gear (209) is meshedly connected to the first bevel gear (205).

3. The comprehensive ecological environment management device according to claim 1, characterized in that: The outer rings of the first synchronous pulley (210), the second synchronous pulley (211), the third synchronous pulley (212) and the fourth synchronous pulley (213) are all movably connected with a belt (214); the connection points between the belt (214) and the first synchronous pulley (210), the second synchronous pulley (211), the third synchronous pulley (212) and the fourth synchronous pulley (213) are all frosted; the crushing knives (215) do not contact each other and are separated by a certain distance; the conveying assembly (3) is arranged above the floating platform (1).

4. The comprehensive ecological environment management device according to claim 3, characterized in that: The conveying assembly (3) includes a rotating motor (301) fixedly connected to the front of one of the L-shaped seats (201), a long rod (302) is rotatably connected between the output end of the rotating motor (301) and the two fixed plates (102) via bearings, and a conveyor belt (303) is sleeved on the outer ring of the two long rods (302), and a plurality of drainage holes (305) are opened through the top of the conveyor belt (303).

5. The comprehensive ecological environment management device according to claim 4, characterized in that: Both sides of the conveyor belt (303) are equipped with spacer belts (304), the left side of the conveyor belt (303) does not contact the crushing knife (215) and is separated by a distance with the same diameter as the fixed plate (102), and the recovery component (4) is arranged above the floating platform (1).

6. The comprehensive ecological environment management device according to claim 5, characterized in that: The recovery component (4) includes a recovery box (401) fixedly connected to the middle of the top of the floating platform (1), one side of the recovery box (401) is fixedly connected to a support frame (402), hydraulic rods (403) are provided on both sides of the top of the support frame (402), the output ends of the two hydraulic rods (403) are fixedly connected to a pressure plate (404), the right side of the recovery box (401) is connected to a door body (405) through a hinge, and the right side of the door body (405) is fixedly connected to a handle (406), and a second treatment component (5), which is arranged above the floating platform (1).

7. The comprehensive ecological environment management device according to claim 6, characterized in that: The second treatment component (5) includes two purification boxes (501) fixedly connected to the top of the floating platform (1), wherein an aerator (502) is provided on the right side of one of the purification boxes (501), a first delivery pipe (503) is sleeved between the aerator (502) and the other purification box (501), a second delivery pipe (504) is sleeved on one side of the first delivery pipe (503), a water pump (505) is provided on the right side of the other purification box (501), a water inlet end of the water pump (505) is sleeved with a water pump pipe (506), a water outlet end of the water pump (505) is sleeved with a first water delivery pipe (507), a second water delivery pipe (508) is sleeved on the left side of the first water delivery pipe (507), and a drainage pipe (517) is sleeved on the left side of each of the purification boxes (501).

8. The comprehensive ecological environment management device according to claim 7, characterized in that: The inner walls of the two purification boxes (501) are provided with chutes (509) around them, the inner cavities of the chutes (509) are provided with sliders (510), one side of each of the two sliders (510) is fixedly connected with a fixing bar (511), and between each of the two fixing bars (511) are sequentially provided with a first filter screen (512), a second filter screen (513) and a biofilm purification layer (514) from top to bottom, the top of the purification box (501) is provided with a box cover (515), and the bottom of the box cover (515) is fixedly connected with mounting blocks (516) around it.

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