Biological-physical coupling treatment equipment and method for dispersive algal blooms

Abstract

The invention discloses biological-physical coupling treatment equipment and method for dispersive algal blooms. The equipment comprises a bottom plate, a water storage tank arranged on the bottom plate, a pretreatment assembly arranged in the water storage tank and a belt type filter pressing assembly arranged on the bottom plate. A mesh grid is arranged in the water storage tank, and a collecting hopper is arranged at the bottom end of the mesh grid; the pretreatment assembly is used for carrying out gravity dehydration treatment on the algae particle aggregate falling from the collecting hopper; the belt type filter pressing assembly is used for extruding and dehydrating the algae particle aggregate; according to the method, the purpose of algae-water separation based on safety is achieved by utilizing algae enrichment behaviors of active ingestion of the bellamya aeruginosa to free algae particles, accumulation of a digestive system and excretion of the bellamya aeruginosa into aggregates; meanwhile, the algae particle aggregate is conveyed to the water surface in the inclined upward direction through the belt type filter pressing assembly, the algae particle aggregate is gradually separated from water in the process, and the purpose of dispersive algal bloom biological-physical coupling treatment is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of algae wastewater treatment, and in particular to biological-physical coupling treatment equipment and methods for diffuse algae blooms. Background Art

[0002] With extreme climate change and intensified human production activities, eutrophication of lakes and reservoirs and frequent occurrence of cyanobacterial blooms remain serious water environment problems around the world. In recent years, Cylindrospermopsis, which is highly adaptable and easy to produce toxins, has gradually invaded some eutrophic water bodies in my country, replacing other cyanobacteria to become the dominant species during blooms, increasing the threat of bloom water bodies to human society. Cylindrospermopsis is small and evenly dispersed in the water body, making it difficult to deal with blooms. Single physical algae removal technology (such as filtration, flotation, pressurization, ultrasound, etc.) is not ideal for the treatment of Cylindrospermopsis, and it needs to be combined with flocculation pretreatment to improve the removal rate.

[0003] The existing flocculation and filtration technology is not suitable for algal bloom control in water sources because it involves the introduction of chemicals. Secondly, the flocs formed by traditional flocculation agents such as polyaluminium chloride are loose and fragile, and have limited ability to improve filtration efficiency. At the same time, the agent is only added once, and repeated additions are required to achieve a continuous flocculation effect, which is not only costly, but also requires manpower and energy for material supply. Summary of the invention

[0004] In view of the above-mentioned technical problems, the present invention provides a biological-physical coupling treatment device and method for diffuse algae blooms.

[0005] The technical solution of the present invention is: a biological-physical coupling treatment device for diffuse algae blooms, comprising a bottom plate, a water storage tank arranged on the bottom plate, a pretreatment component arranged at the bottom of the water storage tank, and a belt filter press component arranged on the bottom plate; a grid grille is arranged inside the water storage tank, a collecting bucket is arranged at the bottom of the grid grille, and a rectangular discharge pipe is arranged at the bottom of the collecting bucket;

[0006] The pretreatment component includes a dehydration tray arranged at the bottom of the water storage tank, a barrier screen arranged inside the dehydration tray, a cleaning push plate movably connected inside the dehydration tray and abutting against the upper surface of the barrier screen, and a first electric push rod arranged on the outer side of the dehydration tray and providing power for the cleaning push plate;

[0007] The belt filter press assembly includes an equipment box arranged on a bottom plate, a first roller member, a second roller member and an extrusion roller member rotatably clamped inside the equipment box, a first filter press belt sleeved on the first roller member and the extrusion roller member, a second filter press belt sleeved on the second roller member and the extrusion roller member, a first drive motor arranged on the outer side wall of the equipment box and providing power to the first roller member, and a second drive motor providing power to the second roller member.

[0008] Furthermore, a water-permeable hole is provided on the collecting bucket; a lifting bucket adapted to the shape of the collecting bucket is provided inside the water storage tank and below the collecting bucket; the lifting bucket is slidably engaged with the rectangular discharge pipe, and a plurality of lifting rods are equidistantly distributed on the top of the lifting bucket and pass through the collecting bucket and the water storage tank in sequence; an integrated board connected to each lifting rod is provided above the water storage tank; a mounting platform is provided on the top of the water storage tank; a second electric rod connected to the integrated board is provided on the mounting platform;

[0009] Note: Since the Lacrocephalus is diffusely distributed in the water, it is difficult for the Lacrocephalus in the water between the collecting bucket and the grid screen to be eaten by the copper-rusted ring-edge snail; at this time, the second electric rod is used to push the integrated plate upward, and the lifting rod is used to pull the lifting bucket closer to the collecting bucket, so that the water in the area between the collecting bucket and the grid screen enters above the grid screen, and the Lacrocephalus in the water is eaten by the copper-rusted ring-edge snail again, which is beneficial to improve the cleaning effect of the Lacrocephalus in the water.

[0010] Furthermore, both sides of the collecting bucket are slidably connected to the inner wall of the water storage tank through sliding rods, and each sliding rod is sleeved with a vibration spring located at the upper and lower ends of the collecting bucket; each lifting pull rod is sleeved with a plurality of rubber push plates;

[0011] Description: When the lifting rod moves on the collecting bucket, the rubber push plate and the collecting bucket are clamped together, so that the collecting bucket vibrates up and down along the sliding rod under the action of the vibration spring, so that the algae particle aggregates on the collecting bucket completely enter the rectangular discharge pipe, avoiding the accumulation of algae particle aggregates on the surface of the collecting bucket and affecting the working efficiency of the equipment.

[0012] Furthermore, an opening and closing member is provided at the bottom of the rectangular discharge pipe; the opening member comprises two opening and closing plates movably arranged at the bottom ends of the opening and closing member, linkage plates movably hinged to the two opening and closing plates respectively and slidably engaged with the inner wall of the rectangular discharge pipe, and an operating rod penetrating the water storage tank and connected to the linkage plates; the two sides of one end of the two opening and closing plates away from each other are respectively slidably engaged with the inner wall of the rectangular discharge pipe; two linkage plates are provided, the two linkage plates are respectively arranged on the two sides of one end of the two opening and closing plates close to each other, and the two linkage plates are both provided with a first tooth groove; the operating rod is sleeved with a driving gear respectively meshed and connected with the two first tooth grooves in a one-to-one correspondence;

[0013] Description: When in use, the driving gear is driven to rotate by the operating lever, and the meshing action of the driving gear and the first tooth groove is utilized to make the linkage plate move upward along the inner wall of the rectangular discharge pipe, and pull the two opening and closing plates closer to each other. At this time, the algae particle aggregates inside the rectangular discharge pipe are discharged from the rectangular discharge pipe, so as to avoid excessive discharge of water inside the water tank from the rectangular discharge pipe and affect the growth environment of the copper rust ring edge.

[0014] Furthermore, a cleaning brush is rotatably connected to one side of the cleaning push plate away from the first electric push rod, and pinions are arranged at both ends of the cleaning brush; and second tooth grooves are arranged on the inner wall of the dehydration tray, which are respectively meshed and connected with the two pinions in a one-to-one correspondence;

[0015] Description: When the cleaning push plate moves inside the dehydration tray, it drives the cleaning brush to move. During the movement of the cleaning brush, the meshing action of the small gear and the second tooth groove generates self-rotation to clean the algae particle aggregates on the surface of the barrier screen, so that all the algae particle aggregates on the barrier screen can enter the interior of the equipment box.

[0016] Furthermore, a scraper abutting against the outer wall of the second filter press belt is rotatably connected inside the equipment box, and both ends of the scraper are provided with a rotating shaft penetrating the equipment box, and tension plates are provided on the two rotating shafts, and tension springs connected to the two tension plates one by one are provided on the outer side wall of the equipment box;

[0017] Description: During the rotation of the second filter press belt, the scraper is used to scrape off the algae particle aggregates adhered to the second filter press belt, so that the second filter press belt always maintains an efficient operating state; and the setting of the tension spring makes the scraper always close to the second filter press belt, which is beneficial to improve the effect of the scraper.

[0018] The present invention also provides a biological-physical coupling treatment method for diffuse algae blooms, based on the above-mentioned biological-physical coupling treatment device for diffuse algae blooms, comprising the following steps:

[0019] S1. The algae water containing Acutum lamarckii is passed into the water storage tank, and copper rust ring ridge snails are placed into the water storage tank. The copper rust ring ridge snails are used to feed and enrich the algae particles in the algae water above the grid. The algae particle aggregates excreted by the copper rust ring ridge snails fall into the collection bucket under the action of gravity and enter the dehydration tray through the rectangular discharge pipe; the placement density of the copper rust ring ridge snails is 300-500 / m 2 ;

[0020] S2. Under the action of gravity, the water in the algae particle aggregates inside the dehydration tray enters the bottom of the dehydration tray through the barrier mesh plate and is finally discharged from the dehydration tray; the first electric push rod is used to push the cleaning push plate to move on the upper surface of the barrier mesh plate, so as to push the algae particle aggregates accumulated on the barrier mesh plate into the equipment box, and make the algae particle aggregates fall to the surface of the second filter press belt;

[0021] S3. The first drive motor is used to drive the first filter press belt to rotate around the first roller component and the squeezing roller component, and the second drive motor is used to drive the second filter press belt to rotate around the second roller component and the squeezing roller component; when the algae particle aggregate passes through the squeezing roller component, the second filter press belt and the first filter press belt are used to dehydrate the algae particle aggregate; when the dehydrated algae particle aggregate passes through the top of the second roller component, it is separated from the second filter press belt; the water squeezed out of the algae particle aggregate falls into the inside of the equipment box and is finally discharged from the equipment box.

[0022] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0023] First, the device structure of the present invention is reasonably designed, and the algae enrichment behavior of the copper rust ring edge snails on the free algae particles is actively ingested, the digestive system aggregates, and the algae are excreted into agglomerates to achieve the purpose of safe algae-water separation, solving the problem of secondary water pollution caused by chemical treatment of diffuse algae blooms;

[0024] Second, when the device of the present invention dehydrates the algae particle aggregates, physical gravity dehydration is first performed, and then mechanical dehydration is performed using a belt filter press assembly, thereby achieving the purpose of biological-physical coupling treatment of diffuse algae blooms, making the device of the present invention highly sustainable and safe;

[0025] Third, during the operation of the equipment of the present invention, the barrier screen is cleaned in real time by the cooperation of the cleaning brush and the purge rack, and the second filter press belt is cleaned in real time by the scraper and the flushing nozzle; thus, the reliability of the use of the pretreatment component and the belt filter press component is ensured, and the operating stability of the equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a longitudinal sectional view of the apparatus of the present invention;

[0027] Figure 2 is a front view of the device of the present invention;

[0028] Figure 3 is a right side view of the device of the present invention;

[0029] Figure 4 The present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0030] Figure 5 is a schematic structural diagram of a pretreatment component of the present invention;

[0031] Figure 6 The present invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0032] Figure 7is a schematic diagram of the connection between the opening and closing component of the present invention and the rectangular discharge pipe;

[0033] Figure 8 It is a schematic diagram of the connection between the linkage plate and the opening and closing plate of the present invention;

[0034] Among them, 1-water storage tank, 10-grid grille, 11-collection bucket, 110-slide rod, 111-vibration spring, 112-rubber push plate, 12-rectangular discharge pipe, 13-lifting bucket, 130-lifting pull rod, 131-integrated plate, 14-installation platform, 15-second electric rod, 2-pretreatment component, 20-dehydration tray, 200-first sewage pipe, 201-transfer channel, 21-blocking mesh plate, 22-cleaning push plate, 23-first electric push rod, 24-U-shaped push frame, 25-cleaning brush, 250-pinion, 251-second tooth groove, 26-purge frame, 260-auxiliary push rod, 27-blower, 3-belt filter press Components, 30-equipment box, 300-material receiving hole, 301-second sewage pipe, 31-first roller component, 310-first guide roller, 32-second roller component, 320-second guide roller, 33-squeezing roller component, 330-squeezing roller, 34-first filter press belt, 35-second filter press belt, 36-first drive motor, 37-second drive motor, 38-scraper, 380-rotating shaft, 381-tensioning plate, 382-tension spring, 39-flushing nozzle, 390-water pipe joint, 4-collecting box, 5-opening and closing component, 50-opening and closing plate, 51-linkage plate, 510-first tooth groove, 52-operating rod, 520-driving gear. DETAILED DESCRIPTION

[0035] Example 1

[0036] like Figure 1 The biological-physical coupling treatment device for diffuse algae blooms shown in the figure comprises a bottom plate, a water storage tank 1 arranged on the bottom plate, a pretreatment component 2 arranged at the bottom of the water storage tank 1, and a belt filter press component 3 arranged on the bottom plate and connected to the water storage tank 1; a mesh grille 10 with a pore size of 3 mm is arranged inside the water storage tank 1, a collecting bucket 11 is arranged at the bottom end of the mesh grille 10, and a rectangular discharge pipe 12 is arranged at the bottom end of the collecting bucket 11;

[0037] like Figure 1 , 2As shown, the pretreatment component 2 includes a dehydration tray 20 arranged at the bottom of the water storage tank 1, a blocking mesh plate 21 arranged inside the dehydration tray 20, a cleaning push plate 22 movably connected to the inside of the dehydration tray 20 and abutting against the upper end surface of the blocking mesh plate 21, and a first electric push rod 23 arranged on the outside of the dehydration tray 20 and providing power for the cleaning push plate 22; a first sewage pipe 200 penetrating the water storage tank 1 is arranged on the outer wall of the dehydration tray 20, and a transfer channel 201 penetrating the water storage tank 1 is arranged on the side of the dehydration tray 20 away from the first electric push rod 23; a U-shaped push frame 24 penetrating the dehydration tray 20 and the water storage tank 1 in sequence is arranged on the cleaning push plate 22; the first electric rod 23 penetrates the water storage tank 1 and is connected to the inner wall of the U-shaped push frame 24;

[0038] like Figure 1 , 2 As shown in Figure 3, the belt filter press assembly 3 includes an equipment box 30 arranged on the bottom plate, a first roller member 31, a second roller member 32 and an extrusion roller member 33 rotatably connected to the inside of the equipment box 30, a first filter press belt 34 sleeved on the first roller member 31 and the extrusion roller member 33, a second filter press belt 35 sleeved on the second roller member 32 and the extrusion roller member 33, a first drive motor 36 arranged on the outer wall of the equipment box 30 and providing power for the first roller member 31, and a second drive motor 37 providing power for the second roller member 32; a material receiving hole 300 is arranged on the side of the equipment box 30 away from the water storage tank 1, and a second sewage discharge pipe 301 is arranged at the lower end of the outer wall of the equipment box 30; a collecting box 4 is arranged on the bottom plate below the material receiving hole 300; the first roller member 31 is composed of three first guide rollers 310, and the three first guide rollers 310 are distributed in the equipment box 30 in a triangular shape. On one side of the device box 30, the first drive motor 36 provides power for one of the first guide rollers 310; the second roller member 32 is composed of three second guide rollers 320, which are distributed in a triangle on the other side of the device box 30, and the second drive motor 37 provides power for one of the second guide rollers 320; there are 5 groups of squeeze roller members 33, each group of squeeze roller members 33 is evenly distributed between the first roller member 31 and the second roller member 32, and the height of each group of squeeze roller members 33 increases successively; each group of squeeze roller members 33 is composed of two squeeze rollers 330; the first filter press belt 34 and the second filter press belt 35 are both annular structures, the first filter press belt 34 is sleeved on the outside of each first guide roller 310 and squeeze roller 330, the second filter press belt 35 is sleeved on the outside of each second guide roller 320 and squeeze roller 330, and the second filter press belt 35 is abutted against the transfer channel 201.

[0039] Example 2

[0040] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms, based on the biological-physical coupling treatment device for diffuse algae blooms in Example 1, comprising the following steps:

[0041] S1. The algae water containing Acrocephalum rabbii is passed into the water storage tank 1, and copper rust ring edge snails are placed into the water storage tank 1. The copper rust ring edge snails are used to feed and enrich the algae particles in the algae water above the grid grille 10. The algae particle aggregates excreted by the copper rust ring edge snails fall into the collection bucket 11 under the action of gravity, and enter the dehydration tray 20 through the rectangular discharge pipe 12; wherein, the placement density of the copper rust ring edge snails is 300 pieces / m 2 ;

[0042] S2. Under the action of gravity, the water in the algae particle aggregates inside the dehydration tray 20 enters the bottom of the dehydration tray 20 through the barrier mesh plate 21, and finally is discharged from the dehydration tray 20 through the first sewage pipe 200; the first electric push rod 23 is used to pull the U-shaped push frame 24 to move along the inner wall of the water storage tank 1, and the U-shaped push frame 24 is used to push the cleaning push plate 22 to move on the upper end surface of the barrier mesh plate 21, and the algae particle aggregates gathered on the barrier mesh plate 21 are pushed to the inside of the equipment box 30 through the transfer channel 201, and the algae particle aggregates fall to the surface of the second filter press belt 35;

[0043] S3. The first drive motor 36 is used to drive the first filter press belt 34 to rotate around the first guide rollers 310 and the squeezing rollers 330, and the second drive motor 37 is used to drive the second filter press belt 35 to rotate around the second guide rollers 320 and the squeezing rollers 330; when the algae particle aggregates pass through the squeezing rollers 330, the squeezing effect of the second filter press belt 35 and the first filter press belt 34 is used to achieve dehydration; when the dehydrated algae particle aggregates pass through the top of the second rotating roller member 32, they are separated from the second filter press belt 35 and fall into the collection box 4 through the receiving hole 300; the water squeezed out of the algae particle aggregates falls into the equipment box 30, and is finally discharged from the equipment box 30 through the second sewage pipe 301.

[0044] Example 3

[0045] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms, based on the biological-physical coupling treatment device for diffuse algae blooms in Example 1, which differs from Example 2 in that:

[0046] In step S1, the density of the placement of copper rust ring edge snails is 500 pieces / m 2 .

[0047] Example 4

[0048] The difference between this embodiment and embodiment 1 is that:

[0049] like Figure 1As shown, the collecting bucket 11 is penetrated with a water-permeable hole; a lifting bucket 13 adapted to the shape of the collecting bucket 11 is arranged inside the water tank 1 and below the collecting bucket 11; the lifting bucket 13 is slidably engaged with the rectangular discharge pipe 12, and four lifting rods 130 are equidistantly distributed on the top of the lifting bucket 13 and penetrate the collecting bucket 11 and the water tank 1 in sequence; an integrated board 131 connected to each lifting rod 130 is arranged above the water tank 1; a mounting platform 14 is arranged on the top of the water tank 1; a second electric rod 15 connected to the integrated board 131 is arranged on the mounting platform 14.

[0050] Example 5

[0051] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms. The biological-physical coupling treatment device for diffuse algae blooms based on Example 4 is different from Example 2 in that:

[0052] After step S1 is completed, the second electric rod 15 is used to push the integrated plate 131 to move upward, and the lifting rod 130 is used to pull the lifting bucket 13 closer to the collecting bucket 11, so that the water in the area between the collecting bucket 11 and the grid grille 10 enters above the grid grille 10, and the Lacrocephalus in the water is eaten again by the copper-rust ring-edge snail.

[0053] Example 6

[0054] The difference between this embodiment and embodiment 4 is that:

[0055] like Figure 4 As shown, both sides of the collecting bucket 11 are slidably engaged with the inner wall of the water storage tank 1 through sliding rods 110, and each sliding rod 110 is sleeved with a vibration spring 111 located at the upper and lower ends of the collecting bucket 11; each lifting rod 130 is sleeved with four rubber push plates 112.

[0056] Example 7

[0057] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms. The biological-physical coupling treatment device for diffuse algae blooms based on Example 6 is different from Example 5 in that:

[0058] In step S1, when the lifting rod 130 moves on the collecting bucket 11, the rubber push plate 112 is clamped with the collecting bucket 11, so that the collecting bucket 11 vibrates up and down along the sliding rod 110 under the action of the vibration spring 111, so that the algae particle aggregates on the collecting bucket 11 completely enter the rectangular discharge pipe 12.

[0059] Example 8

[0060] The difference between this embodiment and embodiment 6 is that:

[0061] like Figure 1 , 2 As shown in Figure 5, a purge rack 26 is provided inside the dehydration tray 20 and below the barrier mesh plate 21, and an air hole is provided on the side of the purge seat 26 close to the barrier mesh plate 21; a hair dryer 27 connected to the purge rack 26 through a conduit is provided on the bottom plate; an auxiliary push rod 260 is provided on the inner side of the U-shaped pushing frame 24, which passes through the water storage tank 1 and the dehydration tray 20 in sequence and is connected to the purge rack 26; a cleaning brush 25 is rotatably connected to the side of the cleaning push plate 22 away from the first electric push rod 23, and small gears 250 are provided at both ends of the cleaning brush 25; second tooth grooves 251 are provided on the inner wall of the dehydration tray 20, which are respectively meshed and connected with the two small gears 250 in a one-to-one correspondence.

[0062] Example 9

[0063] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms. The biological-physical coupling treatment device for diffuse algae blooms based on Example 8 is different from Example 7 in that:

[0064] In step S2, during the movement of the U-shaped pushing frame 24, the auxiliary pushing rod 260 is used to push the blowing frame 26 to move along the lower bottom surface of the blocking mesh plate 21, and the outside air is blown toward the blocking mesh plate 21 through the air holes under the action of the hair dryer 27, so as to clear the algae particle aggregates blocked in the gaps of the blocking mesh plate 21; at the same time, the cleaning pushing plate 22 is used to drive the cleaning brush 25 to move, and during the movement of the cleaning brush 25, the meshing action of the pinion 250 and the second tooth groove 251 is used to generate self-rotation, so as to clean the algae particle aggregates on the surface of the blocking mesh plate 21.

[0065] Example 10

[0066] The difference between this embodiment and embodiment 8 is that:

[0067] like Figure 7 , 8 As shown, an opening and closing component 5 is provided at the bottom of the rectangular discharge pipe 12; the opening component 5 includes two opening and closing plates 50 movably arranged at the bottom end of the opening and closing component 5, linkage plates 51 movably hinged to the two opening and closing plates 50 and slidably engaged with the inner wall of the rectangular discharge pipe 12, and an operating rod 52 that penetrates the water tank 1 and is connected to the linkage plate 51; the two sides of the ends of the two opening and closing plates 50 that are away from each other are slidably engaged with the inner wall of the rectangular discharge pipe 12 respectively; there are two linkage plates 51, which are respectively arranged on both sides of the ends of the two opening and closing plates 50 that are close to each other, and the two linkage plates 51 are both provided with first tooth grooves 510; the operating rod 52 is sleeved with a driving gear 520 that is meshed and connected with the two first tooth grooves 510 in a one-to-one correspondence.

[0068] Embodiment 11

[0069] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms. The biological-physical coupling treatment device for diffuse algae blooms based on Example 10 is different from Example 8 in that:

[0070] In step S1, when the algae particles excreted by the copper rust ring-edge snail gather and fall into the collecting bucket 11, the driving gear 520 is driven to rotate by the operating rod 52, and the meshing action of the driving gear 520 and the first tooth groove 510 is utilized to make the linkage plate 51 move upward along the inner wall of the rectangular discharge pipe 12, and pull the two opening and closing plates 50 closer to each other. At this time, the algae particle aggregates inside the rectangular discharge pipe 12 are discharged from the rectangular discharge pipe 12.

[0071] Example 12

[0072] The difference between this embodiment and embodiment 10 is that:

[0073] like Figure 1 , 2 As shown in , 6, a scraper 38 that abuts against the outer wall of the second filter press belt 35 is rotatably connected inside the equipment box 30, and both ends of the scraper 38 are provided with rotating shafts 380 that penetrate the equipment box 30, and both rotating shafts 380 are provided with tensioning plates 381, and the outer side wall of the equipment box 30 is provided with tension springs 382 that are respectively connected to the two tensioning plates 381 in a one-to-one correspondence; a flushing nozzle 39 located on the inner side of the second filter press belt 35 is clamped inside the equipment box 30, and a water pipe joint 390 connected to the flushing nozzle 39 is provided on the outer side wall of the equipment box 30.

[0074] Embodiment 13

[0075] This embodiment describes a biological-physical coupling treatment method for diffuse algae blooms. The biological-physical coupling treatment device for diffuse algae blooms based on Example 12 is different from Example 11 in that:

[0076] In step S3, during the rotation of the second filter press belt 35, the scraper 38 is used to scrape off the algae particle aggregates adhered to the second filter press belt 35; at the same time, the water pipe joint 390 is connected to the external water source, and the external water source is sprayed to the second filter press belt 35 through the flushing nozzle 39 to flush the algae particle aggregates adhered to the second filter press belt 35.

[0077] It should be noted that the second electric rod 15, the first electric push rod 23, the hair dryer 27, the first drive motor 36, the second drive motor 37 and the flushing nozzle 39 used in the present invention all adopt existing technologies and are not specifically limited here. The corresponding products can be selected according to actual needs.

Claims

1. A biological-physical coupling treatment device for diffuse algae blooms, characterized in that: It comprises a bottom plate, a water storage tank (1) arranged on the bottom plate, a pretreatment component (2) arranged at the bottom of the water storage tank (1), and a belt filter press component (3) arranged on the bottom plate; a grid grille (10) is arranged inside the water storage tank (1), a collecting bucket (11) is arranged at the bottom end of the grid grille (10), and a rectangular discharge pipe (12) is arranged at the bottom end of the collecting bucket (11); The pretreatment component (2) comprises a dehydration tray (20) arranged at the bottom of the water storage tank (1), a blocking mesh plate (21) arranged inside the dehydration tray (20), a cleaning push plate (22) movably connected to the inside of the dehydration tray (20) and abutting against the upper end surface of the blocking mesh plate (21), and a first electric push rod (23) arranged on the outside of the dehydration tray (20) and providing power for the cleaning push plate (22); The belt filter press assembly (3) comprises an equipment box (30) arranged on a bottom plate, a first roller component (31) rotatably connected to the interior of the equipment box (30), a second roller component (32) and a squeezing roller component (33), a first filter press belt (34) sleeved on the first roller component (31) and the squeezing roller component (33), a second filter press belt (35) sleeved on the second roller component (32) and the squeezing roller component (33), a first drive motor (36) arranged on the outer side wall of the equipment box (30) and providing power to the first roller component (31), and a second drive motor (37) providing power to the second roller component (32).

2. The biological-physical coupling treatment device for diffuse algae blooms according to claim 1, characterized in that: The collecting bucket (11) is provided with a water-permeable hole; a lifting bucket (13) adapted to the shape of the collecting bucket (11) is provided inside the water storage tank (1) and below the collecting bucket (11); the lifting bucket (13) is slidably engaged with the rectangular discharge pipe (12), and a plurality of lifting rods (130) are equidistantly distributed on the top of the lifting bucket (13) and penetrate the collecting bucket (11) and the water storage tank (1) in sequence; an integrated board (131) connected to each of the lifting rods (130) is provided above the water storage tank (1); a mounting platform (14) is provided at the top of the water storage tank (1); a second electric rod (15) connected to the integrated board (131) is provided on the mounting platform (14).

3. The biological-physical coupling treatment device for diffuse algae blooms according to claim 2, characterized in that: Both sides of the collecting bucket (11) are slidably engaged with the inner wall of the water storage tank (1) via sliding rods (110), and each of the sliding rods (110) is sleeved with a vibration spring (111) located at the upper and lower ends of the collecting bucket (11); and each of the lifting pull rods (130) is sleeved with a plurality of rubber push plates (112).

4. The biological-physical coupling treatment device for diffuse algae blooms according to claim 1, characterized in that: The bottom of the rectangular discharge pipe (12) is provided with an opening and closing member (5); the opening member (5) comprises two opening and closing plates (50) movably arranged at the bottom ends of the opening and closing member (5), linkage plates (51) movably hinged to the two opening and closing plates (50) and slidably engaged with the inner wall of the rectangular discharge pipe (12), and an operating rod (52) penetrating the water storage tank (1) and connected to the linkage plate (51); the two sides of the ends of the two opening and closing plates (50) that are away from each other are slidably engaged with the inner wall of the rectangular discharge pipe (12); two linkage plates (51) are provided, and the two linkage plates (51) are respectively arranged on the two sides of the ends of the two opening and closing plates (50) that are close to each other, and the two linkage plates (51) are both provided with a first tooth groove (510); the operating rod (52) is sleeved with a driving gear (520) that is meshed and connected with the two first tooth grooves (510) in a one-to-one correspondence.

5. The biological-physical coupling treatment device for diffuse algae blooms according to claim 1, characterized in that: A cleaning brush (25) is rotatably connected to a side of the cleaning push plate (22) away from the first electric push rod (23), and pinions (250) are arranged at both ends of the cleaning brush (25); and second tooth grooves (251) are arranged on the inner wall of the dehydration tray (20) and are respectively meshed and connected with the two pinions (250) in a one-to-one correspondence.

6. The biological-physical coupling treatment device for diffuse algae blooms according to claim 1, characterized in that: A scraper (38) is rotatably clamped inside the equipment box (30) and abuts against the outer wall of the second filter press belt (35). Both ends of the scraper (38) are provided with a rotating shaft (380) that passes through the equipment box (30). Both rotating shafts (380) are provided with a tensioning plate (381). The outer side wall of the equipment box (30) is provided with a tension spring (382) that is respectively connected to the two tensioning plates (381) in a one-to-one correspondence.

7. A biological-physical coupling treatment method for diffuse algae blooms, based on the biological-physical coupling treatment device for diffuse algae blooms according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Algae water containing Acrocephalus lagerstroemia is introduced into a water storage tank (1), and copper rust ring-edge snails are placed into the water storage tank (1). The copper rust ring-edge snails are used to feed and enrich the algae particles in the algae water above the grid grille (10). The algae particle aggregates excreted by the copper rust ring-edge snails fall into the collection bucket (11) under the action of gravity, and enter the dehydration tray (20) through the rectangular discharge pipe (12); wherein the placement density of the copper rust ring-edge snails is 300 to 500 pieces / m 2 ; S2. Under the action of gravity, the water in the algae particle aggregates inside the dehydration tray (20) enters the bottom of the dehydration tray (20) through the barrier mesh plate (21), and is finally discharged from the dehydration tray (20); the first electric push rod (23) is used to push the cleaning push plate (22) to move on the upper end surface of the barrier mesh plate (21), so as to push the algae particle aggregates accumulated on the barrier mesh plate (21) into the equipment box (30), and make the algae particle aggregates fall onto the surface of the second filter press belt (35); S3, using the first drive motor (36) to drive the first filter press belt (34) to rotate around the first roller component (31) and the squeezing roller component (33), and using the second drive motor (37) to drive the second filter press belt (35) to rotate around the second roller component (32) and the squeezing roller component (33); when the algae particle aggregate passes through the squeezing roller component (33), the second filter press belt (35) and the first filter press belt (34) are used to dehydrate; when the dehydrated algae particle aggregate passes through the top of the second roller component (32), it is separated from the second filter press belt (35); the water squeezed out of the algae particle aggregate falls into the interior of the equipment box (30) and is finally discharged from the equipment box (30).

8. The biological-physical coupling treatment device for diffuse algae blooms according to claim 1, characterized in that: The cleaning push plate (22) is provided with a cleaning brush (25).

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