MBBR (Moving Bed Biofilm Reactor) blocking net equipment capable of being mounted without cutting off water and mounting method

Abstract

The invention discloses MBBR blocking net equipment installed without cutting off water and an installation method, and relates to the technical field of sewage treatment equipment.The MBBR blocking net equipment comprises a supporting beam, an installation frame, a blocking net, a stepping motor, a transmission mechanism and a cleaning assembly, the supporting beam is transversely arranged above the installation frame, and the left end and the right end of the supporting beam extend outwards. The intercepting net is a cylindrical shell with two closed ends and is transversely arranged on the inner side of the mounting frame, the two ends of the intercepting net are rotationally connected with the mounting frame, and a plurality of net holes are formed in the circumferential outer wall of the intercepting net. The stepping motor is installed on the supporting beam and drives the intercepting net to rotate through the transmission mechanism. The cleaning assembly comprises a mounting vertical plate and a brush strip, a brush handle of the brush strip is adjustably and fixedly connected with the mounting vertical plate, and when the intercepting net rotates, bristles brush the surface of the intercepting net and the inner walls of meshes. The device is installed without cutting off water and reducing production in a sewage treatment plant, does not need to be fixed in a pool, effectively avoids blocking of the surface of the blocking net, and is simple and convenient to install, good in suspended filler fluidization and good in sewage treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an MBBR screen device installed without water cut-off and an installation method thereof. Background Art

[0002] MBBR process is one of the mainstream processes for upgrading sewage treatment plants. By adding MBBR suspended fillers into the biological pool, the active biomass is increased to improve the removal rate of pollutants. The key to ensuring the stable operation of the MBBR process is the screen equipment that ensures that the suspended fillers do not overflow.

[0003] Existing interception equipment is usually installed when the water supply is cut off. The sewage treatment plant needs to stop the water supply to the biological pool for desilting. The interception equipment needs to be welded and assembled at the installation site, and the installation period is long. Some interception equipment that does not require water supply to be installed requires additional gas cleaning equipment, which consumes a lot of energy and has high operating costs. The interception net has a poor cleaning effect, and the mesh of the interception net is prone to clogging after long-term operation, affecting the stable operation of the MBBR process. Therefore, the existing technology urgently needs to be further improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, one object of the present invention is to propose an MBBR screen device that can be installed without water cut-off, so as to solve the problems of long on-site welding and assembly cycle of the screen equipment, poor cleaning effect of the interception net, easy blockage during long-term operation, and affecting the stable operation of the MBBR process.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An MBBR intercepting device that can be installed without water cut-off includes a support beam, a mounting frame, an intercepting net, a stepper motor, a transmission mechanism and a cleaning assembly. The support beam is laterally arranged above the mounting frame, and its left and right ends protrude outward relative to the mounting frame.

[0007] The interception net is a cylindrical shell with closed ends and is arranged laterally on the inner side of the mounting frame. The left and right ends of the interception net are rotatably connected to the mounting frame through a central rotating shaft respectively. The circumferential outer wall of the interception net has a number of regularly distributed mesh holes.

[0008] A filler feeding port is provided at one end of the interception net, and the filler feeding port is provided with a door body.

[0009] The stepper motor is installed on the support beam, and its output shaft is connected to the central rotating shaft on the right side through the transmission mechanism. The stepper motor drives the intercepting net to rotate around its axis through the transmission mechanism.

[0010] The cleaning assembly includes a mounting plate and a brush strip. The mounting plate is laterally arranged above the interception net. The brush handle of the brush strip is adjustably fixedly connected to the mounting plate. When the interception net rotates, the bristles of the brush strip brush the surface of the interception net and the inner wall of the mesh.

[0011] Furthermore, the support beam is a plane truss made of 304 stainless steel profile, and the mounting frame is a square frame made of 304 stainless steel profile, the upper end of which is fixedly connected to the bottom of the support beam.

[0012] The interception net includes a mesh cylinder, a left end plate and a right end plate. The left end plate and the right end plate are both circular flat plates, which are fixedly connected to the two ends of the interception net as a whole. The two central rotating shafts are respectively arranged on the side of the left end plate and the right end plate facing away from each other, and are both coaxially arranged with the interception net.

[0013] Furthermore, a plurality of annular reinforcing ribs are provided on the inner side of the interception net, and the annular reinforcing ribs are arranged on the inner side wall of the interception net at equal intervals along the axial direction of the interception net, and the interception net and the annular reinforcing ribs are integrally injection-molded from PE material.

[0014] The interception net has an opening rate of 50-60%, and a mesh diameter smaller than the diameter of the MBBR suspended filler.

[0015] Furthermore, the transmission mechanism includes a worm gear reducer, a driving sprocket, a driven sprocket and a chain. The worm gear reducer is arranged on the support beam, and its input shaft is connected to the output shaft of the stepper motor.

[0016] The driving sprocket is installed on the output shaft of the worm gear reducer, and the driven sprocket is installed on the central rotating shaft on the right side of the interception net, and is connected to the driving sprocket through the chain. The rotation speed of the interception net is 5-20r / min.

[0017] Furthermore, the mounting plate is a long strip-shaped plate and is located directly above the axial direction of the interception net, and both ends of the mounting plate are fixedly connected to the mounting frame.

[0018] A vertical groove running through from top to bottom is provided on the installation vertical plate, and a plurality of oblong holes are provided on the portion of the installation vertical plate corresponding to the vertical groove, and the oblong holes are evenly spaced along the length direction of the installation vertical plate.

[0019] The brush handle of the brush strip is plugged into the vertical groove of the mounting plate. The brush handle is provided with bolt holes which are equal in number to the oblong holes of the mounting plate and correspond in position to each other. Each bolt hole is provided with a positioning bolt assembly.

[0020] Furthermore, the filler feeding port is located on the right end plate and close to the edge of the left end, and one side of the door body is hinged to the outer wall side of the right end plate.

[0021] Two locking mechanisms are symmetrically arranged on both sides of the filler feeding port. The locking mechanism includes a pin shaft seat, a locating pin, a spring and a sleeve. The pin shaft seat is adjacently arranged on the outside of the door body and fixed to the side wall of the right end plate. The locating pin is slidably inserted into the pin shaft seat, and the spring is sleeved on the outside of the locating pin. A limiting portion that cooperates with the spring is fixed on the circumferential outer wall of the locating pin.

[0022] The sleeve is fixedly installed on the outer wall of the door body. When the door body closes the filler feeding port, the end of the positioning pin is opposite to the sleeve, and the spring drives the positioning pin to penetrate into the corresponding sleeve to lock the door body.

[0023] Another object of the present invention is to provide a method for installing an MBBR screen device without water shutoff.

[0024] A method for installing an MBBR screen device without water cut-off installation, based on the above-mentioned MBBR screen device without water cut-off installation, the installation method comprises the following steps:

[0025] S1. Determine the length of the interception net according to the width of the biological pool. Install the interception net to the inner side of the mounting frame in the factory. Fix the stepper motor on the support beam. Then hoist the support beam to the top of the mounting frame and fix it with the upper bolts of the mounting frame. After that, the transmission mechanism connects the central shaft on the right side of the interception net to the output shaft of the stepper motor.

[0026] S2. Both ends of the mounting plate are fixedly connected to the mounting frame, and the brush handle of the brush strip is plugged into the mounting plate. After the height of the brush handle is adjusted to the desired position, the brush handle is fixedly connected to the mounting plate by bolts.

[0027] S3. Transport the assembled MBBR intercepting net equipment to the installation site, add MBBR suspended filler into the interior of the intercepting net through the filler adding port, then close the filler adding port and lock the door.

[0028] S4. Use a truck crane to hoist the MBBR intercepting net equipment to the inner side of the biological pool. The left and right ends of the support beam are respectively set on the top of the wall of the biological pool. The wiring terminals of the stepper motor are electrically connected to the on-site distribution cabinet. The speed of the intercepting net is adjusted to complete the equipment debugging.

[0029] By adopting the above technical solution, the beneficial technical effects of the present invention are:

[0030] 1. Simple and fast installation: MBBR barrier equipment is assembled in the factory, transported to the project site as a whole, and hoisted to the designated location using a truck crane. It can achieve non-stop water construction, no need to empty the biological pool and desilt the pool body, no need for on-site welding, assembly, and wall modification. A single set of equipment can be installed, debugged, and put into trial operation on the same day.

[0031] 2. Reduce energy consumption and cost: The main energy consumption of the MBBR interception equipment is the energy consumption of the motor drive. The motor has a slow speed and low power. The brush is mechanically cleaned and no additional gas cleaning equipment is required, which saves operating costs and subsequent maintenance investment. The main material of the interception net is PE, and the overall weight of the interception device is reduced, reducing investment costs.

[0032] 3. Good cleaning effect of intercepting net: the brush bar fixed outside brushes the rotating intercepting net instead of gas cleaning, with a wide cleaning area, keeping the surface of the intercepting net and the inner wall of the mesh clean during operation.

[0033] 4. Long service life: Except for the brush strips that need to be replaced regularly, the rest of the parts and materials are non-consumables. During the normal use period, there is no risk of corrosion, damage, etc., and no replacement is required. When the MBBR suspended filler needs to be replaced, use a truck crane to lift the entire blockage equipment for replacement. The overall service life of the MBBR blockage equipment is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of an MBBR screen device installed without water cut-off according to the present invention.

[0035] Figure 2 yes Figure 1 A schematic diagram of a section of the structure shows the interception net.

[0036] Figure 3 It is a top view of an MBBR screen device installed without water cut-off according to the present invention.

[0037] Figure 4 yes Figure 1 Another exploded view of the structure shows the cleaning assembly.

[0038] Figure 5 It is a right view of an MBBR screen device installed without water cut-off according to the present invention.

[0039] Figure 6 This Figure 5 A partial enlarged view of part A. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with the accompanying drawings:

[0041] Embodiment 1, combination Figures 1 to 6A MBBR intercepting device installed without water stopping includes a support beam 1, a mounting frame 2, an intercepting net 3, a stepping motor 4, a transmission mechanism and a cleaning component. The support beam 1 is a plane truss made of 304 stainless steel profile. The support beam 1 is horizontally arranged above the mounting frame 2. The mounting frame 2 is a square frame made of 304 stainless steel profile. The upper end of the mounting frame 2 is fixedly connected to the bottom of the support beam 1 as a whole. The left and right ends of the support beam 1 protrude outward relative to the mounting frame 2. During installation, the mounting frame 2 is placed on the inner side of the biological pool 7, and the left and right ends of the support beam 1 are set on the top of the walls of the biological pool 7 on both sides.

[0042] The interception net 3 is a cylindrical shell with closed ends, and its cross section is a circular ring with equal diameter. The interception net 3 is arranged laterally on the inner side of the mounting frame 2, and the left and right ends of the interception net 3 are rotatably connected to the mounting frame 2 through a central rotating shaft 21 respectively.

[0043] Specifically, the interception net 3 includes a mesh cylinder 31, a left end plate 32 and a right end plate 33. A plurality of annular reinforcing ribs 34 are provided on the inner side of the interception net 3. Each of the annular reinforcing ribs 34 is arranged on the inner wall of the interception net 3 at equal intervals along the axial direction of the interception net 3. The interception net 3 and the annular reinforcing ribs 34 are integrally injection molded from PE material.

[0044] The left end plate 32 and the right end plate 33 are both circular flat plates, which are respectively fixedly connected to the two ends of the interception net 3 as a whole. A group of embedded parts are provided at the edges of the opposite sides of the left end plate 32 and the right end plate 33, and each group of embedded parts includes embedded parts evenly distributed on a circle with the center of the left end plate 32 or the right end plate 33 as the center. The embedded parts of the same group are an integral structure with the corresponding end plate side walls. The two ends of the interception net 3 are respectively fixedly connected to the edges of the left end plate 32 and the right end plate 33 by a hot melt process. The embedded parts of the same group are embedded in the ends of the interception net 3, and the left end plate 32 and the right end plate 33 are respectively fixedly connected to the two ends of the interception net 3 as a whole to close the two ends of the interception net 3.

[0045] The two central rotating shafts 21 are respectively arranged on the side of the left end plate 32 and the right end plate 33 which are away from each other, and are both arranged coaxially with the interception net 3. The circumferential outer wall of the interception net 3 has a number of regularly distributed mesh holes 35, and the mesh holes 35 are evenly distributed on the entire circumferential outer wall of the interception net 3. The mesh holes 35 can be formed during the injection molding of the interception net 3, or can be drilled after the injection molding of the interception net 3. The mesh holes 35 are preferably circular holes, and square holes or diamond holes can also be used. The opening rate of the interception net 3 is 50-60%, and the diameter of the mesh hole 35 is smaller than the diameter of the MBBR suspended filler to prevent the MBBR suspended filler from leaking through the mesh cylinder 31. The opening rate of 50-60% not only ensures the structural strength of the mesh cylinder 31 but also provides sufficient opening area.

[0046] A filler feeding port 36 is provided at one end of the interception net 3, and the filler feeding port 36 is provided with a door body 5. The filler feeding port 36 is located on the right end plate 33 and close to the edge of the left end. One side of the door body 5 is hinged to the outer wall side of the right end plate 33, and the MBBR suspended filler is added to the interior of the interception net 3 by opening the door body 5. When it is necessary to replace a new MBBR suspended filler, use a truck crane to hoist the MBBR interception net equipment out of the biological pool as a whole, rotate the door body 5 to the lower part of the interception net 3, open the door body 5, take out the MBBR suspended filler, put in a new MBBR suspended filler and close the door body 5, then put the MBBR interception net equipment into the biological pool and continue to operate.

[0047] Two locking mechanisms are symmetrically provided on both sides of the filler feeding port 36, and the locking mechanism includes a pin shaft seat 51, a locating pin 52, a spring 53 and a sleeve 54. The pin shaft seat 51 is adjacently arranged on the outside of the door body 5 and fixed to the side wall of the right end plate 33, the locating pin 52 is slidably penetrated through the pin shaft seat 51, and the spring 53 is sleeved on the outside of the locating pin 52. A limiting portion 521 cooperating with the spring 53 is fixed on the circumferential outer wall of the locating pin 52, and a pull ring 55 is installed on the end of the locating pin 52 away from the sleeve 54.

[0048] The sleeve 54 is fixedly mounted on the outer wall of the door body 5. When the door body 5 closes the filler injection port 36, the end of the positioning pin 52 is directly opposite to the sleeve 54, and the spring 53 drives the positioning pin 52 to penetrate the corresponding sleeve 54 to lock the door body 5. When the door body 5 needs to be opened, the positioning pin 52 is pulled through the pull ring 55 to separate the ends of the two positioning pins 52 from the sleeve 54. When the door body 5 needs to be closed, the ends of the two positioning pins 52 are respectively penetrated into the sleeve 54 under the action of the spring 53 to lock the door body 5 to prevent the MBBR suspended filler from overflowing through the filler injection port 36.

[0049] The stepper motor 4 is mounted on the support beam 1, and its output shaft is connected to the central shaft 21 on the right side through the transmission mechanism. The stepper motor 4 drives the interception net 3 to rotate around its axis through the transmission mechanism. Specifically, the transmission mechanism includes a worm gear reducer 41, a driving sprocket 42, a driven sprocket 43 and a chain 44. The worm gear reducer 41 is arranged on the support beam 1, and its input shaft is connected to the output shaft of the stepper motor 4.

[0050] The driving sprocket 42 is installed on the output shaft of the worm gear reducer 41, and the driven sprocket 43 is installed on the central rotating shaft 21 on the right side of the interception net 3, and is connected to the driving sprocket 42 through the chain 44. The rotation speed of the interception net 3 is 5-20r / min, which meets the rotation speed requirements of different processes. The interception net 3 is all below the liquid surface, and the aeration in the water and biological pool provides buoyancy to ensure that the MBBR suspended filler floats in the water, preventing the MBBR suspended filler from accumulating in the same place.

[0051] The cleaning assembly includes a mounting plate 61 and a brush strip 62. The mounting plate 61 is horizontally arranged above the interception net 3. The brush handle of the brush strip 62 is adjustably fixedly connected to the mounting plate 61. When the interception net 3 rotates, the bristles of the brush strip 62 are arranged vertically to scrub the surface of the interception net 3 and the inner wall of the mesh 35, ensuring that the sewage can flow freely inside and outside the interception net 3. Specifically, the bristles are made of high-strength soft brushes, the width of the bristle distribution area on the brush handle is 30 to 60 mm, and the length of the soft bristles is 50 to 100 mm, ensuring that the soft bristles and the interception net 3 always maintain a sufficient contact area.

[0052] The mounting plate 61 is a long strip-shaped plate, and is located directly above the interception net 3 in the axial direction, and both ends of the mounting plate 61 are fixedly connected to the mounting frame 2. The mounting plate 61 is provided with a vertical slot 611 that passes through from top to bottom, and a plurality of oblong holes 612 are provided in the portion of the mounting plate 61 corresponding to the vertical slot 611, and the oblong holes 612 are evenly spaced along the length direction of the mounting plate 61.

[0053] The brush handle of the brush strip 62 is plugged into the vertical groove 611 of the mounting plate 61. The brush handle is provided with bolt holes 621 that are equal in number to the oblong holes 612 of the mounting plate 61 and correspond in position to each other. Each bolt hole 621 is provided with a positioning bolt assembly. The positioning bolt passes through the bolt hole 621 and the corresponding oblong hole 612 to adjust the relative height between the brush strip 62 and the mounting plate 61, and then the positioning bolt assembly fixes the two together. After the bristles of the brush strip 62 become shorter due to friction, the relative height between the brush strip 62 and the mounting plate 61 can be adjusted to ensure that the bristles maintain sufficient contact area with the interception net 3.

[0054] Embodiment 2, a method for installing an MBBR screen device without water cut-off, based on the MBBR screen device without water cut-off described in embodiment 1, the installation method comprises the following steps:

[0055] S1. Determine the length of the interception net 3 according to the width of the biological pool 7. Assemble the interception net 3 to the inner side of the mounting frame 2 in the factory. Fix the stepper motor 4 on the support beam 1. Then hoist the support beam 1 to the top of the mounting frame 2 and fix it together with the upper end bolts of the mounting frame 2. After that, the transmission mechanism connects the central shaft 21 on the right side of the interception net 3 to the output shaft of the stepper motor 4.

[0056] S2. The two ends of the mounting plate 61 are fixedly connected to the mounting frame 2. The brush handle of the brush strip 62 is inserted from the bottom of the mounting plate 61 into the inner side of the mounting plate 61. After that, each positioning bolt is passed through the bolt hole 621 and the corresponding oblong hole 612. After the height of the brush handle is adjusted to the right position, the brush handle is fixedly connected to the mounting plate 61 with bolts.

[0057] S3, transport the assembled MBBR intercepting net equipment to the installation site, add MBBR suspended filler into the interior of the intercepting net 3 through the filler adding port 36, then close the filler adding port 36 and lock the door body 5.

[0058] S4. Use a truck crane to hoist the MBBR intercepting net equipment to the inner side of the biological pool 7. The left and right ends of the support beam 1 are respectively set on the top of the wall of the biological pool 7. The terminal of the stepper motor 4 is electrically connected to the on-site distribution cabinet. The rotation speed of the intercepting net 3 is adjusted to complete the equipment debugging.

[0059] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0060] Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0062] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An MBBR screen device installed without water cut-off, characterized in that: It includes a support beam, a mounting frame, an interception net, a stepping motor, a transmission mechanism and a cleaning component, wherein the support beam is arranged horizontally above the mounting frame, and its left and right ends protrude outward relative to the mounting frame; The interception net is a cylindrical shell with closed ends, and is arranged transversely on the inner side of the mounting frame. The left and right ends of the interception net are respectively connected to the mounting frame for rotation via a central rotating shaft. The circumferential outer wall of the interception net has a plurality of regularly distributed mesh holes. A filler feeding port is provided at one end of the interception net, and the filler feeding port is provided with a door body; The stepper motor is installed on the support beam, and its output shaft is connected to the central rotating shaft on the right side through the transmission mechanism. The stepper motor drives the interception net to rotate around its axis through the transmission mechanism; The cleaning assembly includes a mounting plate and a brush strip. The mounting plate is laterally arranged above the interception net. The brush handle of the brush strip is adjustably fixedly connected to the mounting plate. When the interception net rotates, the bristles of the brush strip brush the surface of the interception net and the inner wall of the mesh.

2. According to claim 1, a MBBR screen device installed without water cut-off is characterized in that: The support beam is a plane truss made of 304 stainless steel profile, and the mounting frame is a square frame made of 304 stainless steel profile, the upper end of which is fixedly connected to the bottom of the support beam; The interception net includes a mesh cylinder, a left end plate and a right end plate. The left end plate and the right end plate are both circular flat plates, which are fixedly connected to the two ends of the interception net as a whole. The two central rotating shafts are respectively arranged on the side of the left end plate and the right end plate facing away from each other, and are both coaxially arranged with the interception net.

3. According to claim 2, a MBBR screen device installed without water cut-off is characterized in that: A plurality of annular reinforcing ribs are arranged on the inner side of the interception net, and each of the annular reinforcing ribs is arranged on the inner side wall of the interception net at equal intervals along the axial direction of the interception net. The interception net and the annular reinforcing ribs are integrally injection molded by PE material; The interception net has an opening rate of 50-60%, and a mesh diameter smaller than the diameter of the MBBR suspended filler.

4. According to the MBBR screen device installed without water cut-off according to claim 1, it is characterized in that: The transmission mechanism includes a worm gear reducer, a driving sprocket, a driven sprocket and a chain, wherein the worm gear reducer is arranged on the support beam, and its input shaft is connected to the output shaft of the stepping motor; The driving sprocket is installed on the output shaft of the worm gear reducer, and the driven sprocket is installed on the central rotating shaft on the right side of the interception net, and is connected to the driving sprocket through the chain. The rotation speed of the interception net is 5-20r / min.

5. According to claim 1, the MBBR screen device installed without water cut-off is characterized in that: The mounting plate is a long strip-shaped plate and is located directly above the interception net in the axial direction. Both ends of the mounting plate are fixedly connected to the mounting frame. The vertical groove that runs through the vertical installation plate is opened, and the part of the vertical installation plate corresponding to the vertical groove is opened with a plurality of oblong holes, and the oblong holes are evenly spaced along the length direction of the vertical installation plate; The brush handle of the brush strip is plugged into the vertical groove of the mounting plate. The brush handle is provided with bolt holes which are equal in number to the oblong holes of the mounting plate and correspond in position to each other. Each bolt hole is provided with a positioning bolt assembly.

6. According to claim 2, the MBBR screen device installed without water cut-off is characterized in that: The filler feeding port is located on the right end plate and close to the edge of the left end, and one side of the door body is hinged to the outer wall side of the right end plate; Two locking mechanisms are symmetrically arranged on both sides of the filler feeding port, and the locking mechanism includes a pin shaft seat, a positioning pin, a spring and a sleeve. The pin shaft seat is adjacently arranged on the outside of the door body and fixed to the side wall of the right end plate. The positioning pin is slidably inserted into the pin shaft seat, and the spring is sleeved on the outside of the positioning pin. A limiting part matching the spring is fixed on the circumferential outer wall of the positioning pin. The sleeve is fixedly installed on the outer wall of the door body. When the door body closes the filler feeding port, the end of the positioning pin is opposite to the sleeve, and the spring drives the positioning pin to penetrate into the corresponding sleeve to lock the door body.

7. A method for installing MBBR screen equipment without water cut-off, characterized in that: Based on the MBBR screen device installed without water stopping according to any one of claims 1 to 6, the installation method comprises the following steps: S1. Determine the length of the interception net according to the width of the biological pool. Install the interception net to the inner side of the mounting frame in the factory. Fix the stepper motor on the support beam. Then hoist the support beam to the top of the mounting frame and fix it with the upper end bolts of the mounting frame. After that, the transmission mechanism connects the central shaft on the right side of the interception net to the output shaft of the stepper motor. S2. The two ends of the mounting plate are fixedly connected to the mounting frame, and the brush handle of the brush strip is plugged into the mounting plate. After the height of the brush handle is adjusted to the desired position, the brush handle is fixedly connected to the mounting plate with bolts; S3, transport the assembled MBBR interception net equipment to the installation site, add MBBR suspended filler into the interior of the interception net through the filler adding port, then close the filler adding port and lock the door; S4. Use a truck crane to hoist the MBBR intercepting net equipment to the inner side of the biological pool. The left and right ends of the support beam are respectively set on the top of the wall of the biological pool. The wiring terminals of the stepper motor are electrically connected to the on-site distribution cabinet. The speed of the intercepting net is adjusted to complete the equipment debugging.

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