A bioreactor for wastewater treatment in an electronics factory

Abstract

The present invention belongs to the technical field of wastewater treatment, and in particular, relates to a bioreactor for wastewater treatment in an electronics factory, including an activated sludge tank and a control box arranged on the outer wall of the activated sludge tank, and also includes: a bottom plate, which is installed on the inner bottom of the activated sludge tank, and the end surface of the bottom plate is rotatably connected with a plurality of lower mounting plates, and a top plate is installed in the activated sludge tank at a position above the bottom plate. The present invention can prevent the attachment of activated sludge and impurities, reduce membrane pollution, reduce the cleaning frequency of the membrane assembly, and is conducive to improving the wastewater treatment efficiency and extending the service life of the membrane assembly through the design of a rotating tubular membrane assembly, and can automatically clean the attached sludge based on the water inlet pressure of the tubular membrane assembly, and can automatically remind personnel when the membrane assembly is damaged, and at the same time, can predict the service life of the membrane assembly, and promptly remind personnel to replace the membrane assembly, and the wastewater treatment effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a bioreactor for wastewater treatment in an electronics factory. Background Art

[0002] The membrane bioreactor combines membrane separation technology with biological treatment processes to effectively intercept microorganisms and pollutants in wastewater. At the same time, the biological reaction part uses the metabolism of microorganisms to degrade harmful substances such as organic matter, and has a very good effect on wastewater treatment.

[0003] At present, membrane bioreactors can treat wastewater more efficiently, are not affected by sludge settling performance, can effectively intercept microorganisms and suspended solids, and have better effluent quality. They can replace the function of traditional secondary sedimentation tanks, occupy a small area, and have good removal capabilities for organic pollutants such as organic solvents, photoresists, and surfactants in electronics factory wastewater, which is conducive to the reuse of electronics factory wastewater. Therefore, membrane bioreactors are relatively widely used in electronics factory wastewater treatment;

[0004] For example, a flat membrane bioreactor disclosed in patent announcement number CN115259358B uses shear force generated by an aeration device to slow down the deposition of activated sludge on the surface of the flat membrane assembly, and try to prevent the activated sludge from clogging the membrane pores and affecting the membrane flux. However, when the aeration device is in the stop stage of intermittent operation, the aeration airflow disappears. At this time, the activated sludge is still easy to adhere to the surface of the membrane assembly. When there is a lot of activated sludge, even if the aeration device resumes work, the activated sludge will not be easy to detach due to the large surface contact area with the flat membrane assembly. Therefore, the frequency of anti-clogging backwashing of the membrane assembly surface needs to be high, which not only reduces the wastewater treatment efficiency, but also the frequent backwashing action is easy to affect the service life of the membrane assembly. Summary of the invention

[0005] The object of the present invention is to provide a bioreactor for wastewater treatment in an electronics factory in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: A bioreactor for wastewater treatment in an electronics factory, comprising an activated sludge tank and a control box arranged on the outer side wall of the activated sludge tank, and also comprising:

[0007] A bottom plate is installed on the inner bottom of the activated sludge tank, and the end surface of the bottom plate is rotatably connected to a plurality of lower mounting plates, and a top plate is installed at a position above the bottom plate inside the activated sludge tank, and the end surface of the top plate is rotatably connected to a plurality of upper mounting sleeves, and a detachable tubular membrane assembly is commonly installed between each of the lower mounting plates and the upper mounting sleeve on the same side;

[0008] A hollow plate is arranged above the top plate and fixed inside the activated sludge tank. The hollow plate is equipped with a driving unit, and the driving unit drives each upper mounting sleeve to rotate. An aeration mechanism is installed on the side wall of the activated sludge tank, and each gas outlet end of the aeration mechanism is respectively arranged between two adjacent tubular membrane modules.

[0009] A pumping unit is installed on the end surface of the hollow plate, and the pumping unit is connected with the interior of each tubular membrane assembly;

[0010] A plurality of detection units are respectively arranged on the inner side of each of the tubular membrane modules, a resistance adjustment mechanism is installed on the top of the hollow plate, and the plurality of detection units are electrically connected to the resistance adjustment mechanism through a control box, and the resistance adjustment mechanism is electrically connected to the driving unit through the control box;

[0011] An early warning trigger unit is installed on the top of the hollow plate, the water outlet of the pumping unit is connected to a prompt component, and the early warning trigger unit is electrically connected to the prompt component through a control box, and the prompt component is used to prompt that the tubular membrane component is damaged;

[0012] The replacement prompting unit is installed on the side wall of the hollow plate and is arranged at the driving end of the driving unit. The replacement prompting unit is used to prompt the replacement of the tubular membrane assembly.

[0013] Preferably, the driving unit includes a plurality of static gears fixedly sleeved on the outer wall of the upper mounting sleeve, and the plurality of static gears in the same row are meshed with each other, the number of the upper mounting sleeves in the same row is the same as the number in the same column, a chain transmission assembly is provided above the top plate, and the chain transmission assembly drives the static gears in the obliquely symmetrical direction to rotate in the same direction, a mounting plate is fixedly mounted on the side wall of the hollow plate, and a driving motor is mounted on the end face of the mounting plate, a moving gear is mounted on the output end of the driving motor, and the moving gear is transmission-connected to the static gear on the same side, and the driving motor is electrically connected to the control box.

[0014] Preferably, the pumping unit includes a water pump fixedly installed on the top of the hollow plate, the water suction end of the water pump is connected to the interior of the hollow plate, a plurality of water suction pipes are fixedly inserted at the bottom of the hollow plate, each end face of the static gear is provided with a through hole, and each water suction pipe passes through the corresponding through hole and extends to the inner side of the tubular membrane assembly on the same side, a first electric-controlled valve is installed inside each water suction pipe, a water supply pipe is fixedly inserted at the end face of the hollow plate, and a second electric-controlled valve is installed inside the water supply pipe, the water pump, the first electric-controlled valve and the second electric-controlled valve are all electrically connected to the control box, and a clean water pipe is installed at the water outlet end of the water pump.

[0015] Preferably, each of the detection units includes an upper insulating groove ring fixedly mounted on the bottom of the upper mounting sleeve, and an annular light is fixedly mounted inside the upper insulating groove ring, a lower insulating groove ring is fixedly mounted on the top of the lower mounting plate, and an annular photosensitive element is mounted inside the lower insulating groove ring, transparent ring plates are mounted on the grooves of the upper insulating groove ring and the lower insulating groove ring, and the annular light and the annular photosensitive element are electrically connected to the control box.

[0016] Preferably, the resistance adjustment mechanism includes an insulating cover fixedly mounted on the top of the hollow plate, an adjusting electromagnetic push rod is fixedly mounted on the inner wall of one side of the insulating cover, and a movable insulating block is mounted on the telescopic end of the adjusting electromagnetic push rod, a conductive ring is fixedly inserted into the side wall of the movable insulating block, a resistance rod is fixedly mounted on the inner wall of the insulating cover away from the adjusting electromagnetic push rod, and the resistance rod is in sliding contact with the inner wall of the conductive ring, each of the annular photosensitive elements is connected in series with the adjusting electromagnetic push rod through a control box, and the conductive ring and the resistance rod are electrically connected to the driving motor through the control box.

[0017] Preferably, the early warning trigger unit includes a circular trough box fixedly installed on the top of the hollow plate, and a plurality of lifting electromagnetic push rods are fixedly installed inside the circular trough box, and each of the lifting electromagnetic push rods is evenly distributed in a ring shape within a range of 330° about the axis of the circular trough box, and each of the lifting electromagnetic push rods is installed with an arc-shaped insulating strip at the telescopic end, and each of the two ends of the arc-shaped insulating strip is fixedly installed with a conductive strip, and two adjacent conductive strips are in sliding contact, each of the annular photosensitive elements is electrically connected to the corresponding lifting electromagnetic push rod through a control box, and each of the conductive strips is electrically connected to the drive motor through the control box.

[0018] Preferably, the prompt component includes a shunt pipe fixedly connected to the wall of the clean water pipe, a normally open solenoid valve is installed inside the shunt pipe, a normally closed solenoid valve is provided on the side of the clean water pipe close to the water outlet, and the water inlet end of the shunt pipe is provided between the normally closed solenoid valve and the water outlet end of the water pump, each of the conductive strips is connected in series with the normally open solenoid valve and the normally closed solenoid valve through a control box, a water flow switch is installed inside the shunt pipe, and the water flow switch is electrically connected to the control box.

[0019] Preferably, the replacement prompt unit includes an L-shaped plate fixedly mounted on the lower end of the mounting plate, a photoelectric switch is fixedly mounted on the horizontal portion of the L-shaped plate, a spotlight corresponding to the position of the photoelectric switch is fixedly mounted on the lower end of the mounting plate, a light-transmitting hole is provided on the end face of the moving gear, and the light emitted by the spotlight is irradiated to the photosensitive end of the photoelectric switch through the light-transmitting hole, and the spotlight and the photoelectric switch are both electrically connected to the control box.

[0020] Compared with existing technologies, the advantages of a bioreactor for wastewater treatment in an electronics factory are:

[0021] 1. Through the cooperation of the activated sludge pool, control box, bottom plate, lower mounting plate, top plate, upper mounting sleeve and tubular membrane assembly, the biological treatment process can be combined with membrane separation technology to achieve efficient biological treatment of electronic factory wastewater. Through the cooperation of the hollow plate, drive unit and aeration mechanism, each tubular membrane assembly is slightly rotated, and the rotation directions of adjacent tubular membrane assemblies are opposite. With the action of the aeration airflow between adjacent tubular membrane assemblies, a complex water flow pattern can be formed to generate stronger shear force. This changing water flow can more effectively flush the membrane surface, prevent the attachment of activated sludge and impurities, reduce membrane pollution, greatly reduce the cleaning frequency of the membrane assembly, and help improve the wastewater treatment efficiency and extend the service life of the membrane assembly.

[0022] 2. Through the cooperation of the pumping unit and the detection unit, the rotation speed of the tubular membrane assembly can be automatically regulated according to the deformation of the assembly caused by the water inlet pressure of the tubular membrane assembly. Therefore, when the tubular membrane assembly is blocked, the rotation speed is increased and the centrifugal force is used to detach the sludge attached to the surface of the tubular membrane assembly. There is no need to perform backwashing and other cleaning operations on the tubular membrane assembly, thereby improving the convenience of use.

[0023] 3. Through the cooperation of the early warning trigger unit and the prompt component, the detection unit can be used to monitor the water quality purified inside each tubular membrane component in real time. When the tubular membrane component is damaged, the pumping unit can be used to automatically remind the staff to replace the damaged tubular membrane component in time, and the water with poor purification effect can be refluxed to avoid the discharge of water that has not been effectively purified.

[0024] 4. Through the replacement reminder unit, the service life of the tubular membrane assembly can be automatically calculated based on the pressure on the tubular membrane assembly, and the personnel can be reminded to replace the tubular membrane assembly in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of a tubular membrane assembly of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0028] Figure 4 The present invention provides a bioreactor for treating wastewater in an electronics factory. Figure 3 A magnified view of the structure of part A;

[0029] Figure 5 It is a schematic diagram of the transmission structure of multiple static gears of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0030] Figure 6 It is a structural schematic diagram of a detection unit of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0031] Figure 7 It is a top view structural schematic diagram of a resistance regulating mechanism of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0032] Figure 8 It is a top view structural schematic diagram of a circular tank box of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0033] Fig. 9 It is a schematic diagram of the internal structure of a circular tank box of a bioreactor for wastewater treatment in an electronics factory provided by the present invention;

[0034] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a tubular membrane assembly of a bioreactor for wastewater treatment in an electronics factory.

[0035] In the figure: 1 activated sludge tank, 2 control box, 3 bottom plate, 4 lower mounting plate, 5 top plate, 6 upper mounting sleeve, 7 tubular membrane assembly, 8 hollow plate, 9 drive unit, 91 static gear, 92 chain transmission assembly, 93 mounting plate, 94 drive motor, 95 moving gear, 10 aeration mechanism, 11 pumping unit, 111 water pump, 112 water suction pipe, 113 through hole, 114 first electric control valve, 115 water supply pipe, 116 second electric control valve, 117 clean water pipe, 12 detection unit, 121 upper insulating groove ring, 122 ring light, 123 lower insulating groove ring, 1 24 annular photosensitive element, 125 transparent ring plate, 13 resistance adjustment mechanism, 131 insulating cover, 132 adjusting electromagnetic push rod, 133 movable insulating block, 134 conductive ring, 135 resistance rod, 14 early warning trigger unit, 141 circular slot box, 142 lifting electromagnetic push rod, 143 arc-shaped insulating strip, 144 conductive strip, 15 prompt component, 151 shunt pipe, 152 normally open electromagnetic valve, 153 normally closed electromagnetic valve, 154 water flow switch, 16 replacement prompt unit, 161 L-shaped plate, 162 photoelectric switch, 163 spotlight, 164 light hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] like Figure 1-Figure 10As shown, a bioreactor for wastewater treatment in an electronics factory includes an activated sludge tank 1 and a control box 2 arranged on the outer wall of the activated sludge tank 1, and also includes: a bottom plate 3, the bottom plate 3 is installed on the inner bottom of the activated sludge tank 1, and the end face of the bottom plate 3 is rotatably connected to multiple lower mounting plates 4, the interior of the activated sludge tank 1 is provided with a top plate 5 located above the bottom plate 3, and the end face of the top plate 5 is rotatably connected to multiple upper mounting sleeves 6, and a detachable tubular membrane component 7 is commonly installed between each lower mounting disk 4 and the upper mounting sleeve 6 on the same side, and the interior of the activated sludge tank 1 is provided with a circulating pump component for driving the circulation of activated sludge and water, as well as a sludge discharge structure and a water inlet structure, etc. These are all existing mature technologies and will not be described in detail here.

[0038] The hollow plate 8 is arranged above the top plate 5 and fixed inside the activated sludge tank 1. The hollow plate 8 is equipped with a driving unit 9, which drives each upper mounting sleeve 6 to rotate. The side wall of the activated sludge tank 1 is equipped with an aeration mechanism 10, and each air outlet end of the aeration mechanism 10 is respectively arranged between two adjacent tubular membrane components 7. The driving unit 9 includes a plurality of static gears 91 fixedly sleeved on the outer wall of the upper mounting sleeve 6, and a plurality of static gears 91 in the same row are meshed with each other. The number of upper mounting sleeves 6 in the same row is the same as the number in the same column. A chain transmission assembly 92 is arranged above the top plate 5, and the chain transmission assembly 92 drives each static gear 91 in the oblique symmetric direction to rotate in the same direction. A mounting plate 93 is fixedly installed on the side wall of the hollow plate 8, and a driving motor 94 is installed on the end face of the mounting plate 93. A moving gear 95 is installed at the output end of the driving motor 94, and the moving gear 95 is transmission-connected to the static gear 91 on the same side, and the driving motor 94 is electrically connected to the control box 2.

[0039] The pumping unit 11 is installed on the end surface of the hollow plate 8, and the pumping unit 11 is connected to the interior of each tubular membrane assembly 7. The pumping unit 11 includes a water pump 111 fixedly installed on the top of the hollow plate 8, and the water suction end of the water pump 111 is connected to the interior of the hollow plate 8. A plurality of water suction pipes 112 are fixedly plugged into the bottom of the hollow plate 8. A through hole 113 is opened on the end surface of each static gear 91, and each water suction pipe 112 passes through the corresponding through hole 113. Extending to the inner side of the tubular membrane assembly 7 on the same side, a first electrically controlled valve 114 is installed inside each water suction pipe 112, a water supply pipe 115 is fixedly inserted into the end face of the hollow plate 8, and a second electrically controlled valve 116 is installed inside the water supply pipe 115, the water pump 111, the first electrically controlled valve 114 and the second electrically controlled valve 116 are all electrically connected to the control box 2, and a clean water pipe 117 is installed at the water outlet end of the water pump 111, and the clean water pipe 117 is connected to an external clean water tank.

[0040] A plurality of detection units 12 are respectively arranged on the inner side of each tubular membrane assembly 7, a resistance adjusting mechanism 13 is installed on the top of the hollow plate 8, and the plurality of detection units 12 are electrically connected to the resistance adjusting mechanism 13 through the control box 2, and the resistance adjusting mechanism 13 is electrically connected to the driving unit 9 through the control box 2, each detection unit 12 includes an upper insulating groove ring 121 fixedly installed on the bottom of the upper mounting sleeve 6, and a ring light 122 is fixedly installed inside the upper insulating groove ring 121, a lower insulating groove ring 123 is fixedly installed on the top of the lower mounting plate 4, and a ring photosensitive element 124 is installed inside the lower insulating groove ring 123, and transparent ring plates 125 are installed on the notches of the upper insulating groove ring 121 and the lower insulating groove ring 123, the ring light 122 and the ring photosensitive element 124 are electrically connected to the control box 2, and the resistance of the ring photosensitive element 124 decreases with the increase of light intensity within a certain light intensity range (for example, 100 lux to 500 lux).

[0041] The resistance adjustment mechanism 13 includes an insulating cover 131 fixedly installed on the top of the hollow plate 8, an adjusting electromagnetic push rod 132 is fixedly installed on the inner wall of one side of the insulating cover 131, and a movable insulating block 133 is installed at the telescopic end of the adjusting electromagnetic push rod 132, and a conductive ring 134 is fixedly inserted on the side wall of the movable insulating block 133, and a resistance rod 135 is fixedly installed on the inner wall of the insulating cover 131 away from the adjusting electromagnetic push rod 132, and the resistance rod 135 is in sliding contact with the inner wall of the conductive ring 134, each annular photosensitive element 124 is connected in series with the adjusting electromagnetic push rod 132 through the control box 2, and the conductive ring 134 and the resistance rod 135 are electrically connected to the drive motor 94 through the control box 2. When the adjusting electromagnetic push rod 132 is not powered on, the conductive ring 134 is in the initial position, and the current passing into the drive motor 94 is the largest at this time. At the same time, under this current, the output power of the drive motor 94 is not higher than the rated power.

[0042] The early warning trigger unit 14 is installed on the top of the hollow plate 8. The early warning trigger unit 14 includes a circular slot box 141 fixedly installed on the top of the hollow plate 8, and a plurality of lifting electromagnetic push rods 142 are fixedly installed inside the circular slot box 141. Each lifting electromagnetic push rod 142 is evenly distributed in a ring shape within a range of 330° about the axis of the circular slot box 141, and each lifting electromagnetic push rod 142 is installed with an arc-shaped insulating strip 143 at the telescopic end, and each arc-shaped insulating strip 143 is fixedly installed with a conductive strip 144 at both ends, and two adjacent conductive strips 144 are in sliding contact, and each annular photosensitive element 124 is electrically connected to the corresponding lifting electromagnetic push rod 142 through the control box 2, and each conductive strip 144 is electrically connected to the drive motor 94 through the control box 2. When each conductive strip 144 is misaligned and out of contact, the power supply circuit of the drive motor 94 will be immediately disconnected.

[0043] The water outlet of the pumping unit 11 is connected to a prompting component 15, and the early warning triggering unit 14 is electrically connected to the prompting component 15 through the control box 2. The prompting component 15 is used to prompt that the tubular membrane component 7 is damaged. The prompting component 15 includes a shunt pipe 151 fixedly connected to the wall of the clean water pipe 117, and a normally open solenoid valve 152 is installed inside the shunt pipe 151. A normally closed solenoid valve 153 is arranged on one side of the clean water pipe 117 near the water outlet, and the water inlet end of the shunt pipe 151 is arranged at a normally closed solenoid valve 153. Between the closed solenoid valve 153 and the water outlet end of the water pump 111, each conductive strip 144 is connected in series with the normally open solenoid valve 152 and the normally closed solenoid valve 153 through the control box 2. A water flow switch 154 is installed inside the shunt pipe 151, and the water flow switch 154 is electrically connected to the control box 2. The moving contact of the water flow switch 154 is affected by the water flow pressure, and its moving contact will be pressed and closed. When the water flow pressure disappears, its moving contact will rebound and reset. This is an existing mature technology, so it will not be elaborated here.

[0044] The replacement prompt unit 16 is installed on the side wall of the hollow plate 8 and is arranged at the driving end of the driving unit 9. The replacement prompt unit 16 is used to prompt the replacement of the tubular membrane assembly 7. The replacement prompt unit 16 includes an L-shaped plate 161 fixedly installed at the lower end of the mounting plate 93. A photoelectric switch 162 is fixedly installed on the horizontal part of the L-shaped plate 161. A spotlight 163 corresponding to the position of the photoelectric switch 162 is fixedly installed on the lower end of the mounting plate 93. A light-transmitting hole 164 is opened on the end face of the moving gear 95, and the light emitted by the spotlight 163 is irradiated to the photosensitive end of the photoelectric switch 162 through the light-transmitting hole 164. The spotlight 163 and the photoelectric switch 162 are both electrically connected to the control box 2. Each time the photoelectric switch 162 receives light, it will output an electrical signal to the control box 2.

[0045] The operating principle of the present invention is now described as follows: the electronic factory wastewater that has been pre-treated (for example, filtration, sedimentation, heavy metal removal, etc.) is introduced into the activated sludge tank 1, and under the action of the circulation system in the activated sludge tank 1 (for example, a biological reaction zone and an interception zone are provided inside the activated sludge tank 1, and the tubular membrane assembly 7 is installed in the interception zone, and a circulation pump is installed in the biological reaction zone, and the wastewater in the activated sludge zone and the mixed liquid of the activated sludge are pumped to the tubular membrane assembly 7 by the circulation pump, and when the water level in the interception zone rises, part of the water liquid is circulated back to the biological reaction zone through the overflow pipe), the wastewater circulates in the activated sludge tank 1 (the circulation can facilitate the mixed liquid of the activated sludge and the wastewater to fully contact with the tubular membrane assembly 7, and is also conducive to the full mixing of the activated sludge and the wastewater), and the activated sludge tank 1 is used for the circulation of the wastewater. The microbial community and colloidal substances of the activated sludge have a large specific surface area and can absorb impurities in the wastewater. The aerobic microorganisms in the activated sludge decompose the adsorbed organic matter into carbon dioxide, water, ammonia nitrogen, etc. under aerobic conditions. The microorganisms will secrete some extracellular polymers during the growth process, so that the sludge forms a floc structure. These flocs can capture suspended particles in the wastewater and then settle under the action of gravity to clarify the wastewater. The water will enter the tubular membrane component 7 under the circulating flow pressure. The tubular membrane component 7 can intercept the activated sludge, colloidal impurities, etc. in the wastewater, so that the water entering the tubular membrane component 7 maintains a sufficient degree of cleanliness, thereby achieving the purpose of purifying the wastewater. The biological treatment of the wastewater by the activated sludge and the separation treatment of the tubular membrane component 7 can be used to efficiently purify the wastewater.

[0046] After the wastewater is introduced into the activated sludge tank 1, the control box 2 is started, and the control box 2 controls the driving motor 94 to work. Initially, the length of the resistor rod 135 connected to the connecting loop between the conductive ring 134 and the driving motor 94 is relatively long, so the driving motor 94 drives the moving gear 95 to rotate at a low power (the rotating speed of the moving gear 95 is 20 revolutions per minute), and when the moving gear 95 rotates, it can drive the static gear 91 on the same side to rotate, and the upper mounting sleeve 6 on this side rotates synchronously, and under the action of the chain transmission assembly 92, the static gears 91 in the oblique symmetric direction rotate synchronously (refer to Figure 5For example, the leftmost static gear 91 in the first row rotates under the action of the moving gear 95, and under the action of the chain transmission assembly 92, from left to right, the second static gear 91 in the second row and the third static gear 91 in the third row rotate synchronously, and so on). At this time, the adjacent static gears 91 of each static gear 91 at the chain transmission assembly 92 will also rotate synchronously, and the rotation directions are opposite. When the static gear 91 rotates, the tubular membrane assembly 7 on the same side will be driven to rotate through the upper mounting sleeve 6, so the rotation directions of the adjacent tubular membrane assemblies 7 are opposite. When the tubular membrane assembly 7 rotates, it will apply a rotational disturbance force to the water body, and since the rotation directions of the adjacent tubular membrane assemblies 7 are opposite, the water body at the same position will be affected. The opposite disturbance force causes the water bodies to collide and squeeze each other, forming a complex water flow pattern and generating a stronger shear force. This changing water flow can more effectively flush the surface of the tubular membrane assembly 7, prevent the attachment of activated sludge and impurities, and reduce the pollution of the surface of the tubular membrane assembly 7. Secondly, after the control box 2 is started, it will control the aeration mechanism 10 to work. The aeration mechanism 10 will transport many tiny bubbles into the water body through each gas outlet. When the bubbles escape from the water body, the disturbance force on the water body between the adjacent tubular membrane assemblies 7 can be further aggravated, thereby further preventing the attachment of activated sludge and impurities to the tubular membrane assembly 7, and the bubbles can better transfer oxygen to the water body, so that the microorganisms can obtain sufficient oxygen.

[0047] After the control box 2 is started, the second electric control valve 116 will be synchronously controlled to open, and the external clean water will be replenished into the hollow plate 8 and each water suction pipe 112 through the water supply pipe 115. After the second electric control valve 116 works for 10 seconds, the control box 2 controls the second electric control valve 116 to close, and simultaneously starts the water pump 111 and each first electric control valve 114. At this time, the hollow plate 8 is connected with the interior of each tubular membrane assembly 7 through the water suction pipe 112, and the water pump 111 can pump out the water inside the tubular membrane assembly 7 and send it to the clean water tank through the clean water pipe 117;

[0048] When some activated sludge and impurities are still attached to the surface of some tubular membrane components 7, the water inlet aperture of the tubular membrane components 7 becomes relatively smaller due to the partial blockage of the tubular membrane components 7. At this time, since the suction pressure of the water pump 111 remains unchanged, the pressure difference between the inside and outside of each tubular membrane component 7 becomes larger, so each tubular membrane component 7 will deform inwardly. After the control box 2 is started, each annular lamp 122 will be started. The light emitted by the annular lamp 122 will pass through the clean water inside the tubular membrane component 7 and irradiate the annular photosensitive element 124 (the annular lamp 122 can use an ultraviolet disinfection lamp, which can also simultaneously disinfect the water body using ultraviolet rays of a specific wavelength). When the tubular membrane component 7 is deformed inwardly, the deformed part will block part of the light irradiated to the annular photosensitive element 124. At this time, the annular photosensitive element 124 will increase its own resistance due to the lower light intensity. Therefore, at this time, the current passed into the regulating electromagnetic push rod 132 becomes smaller, so that the displacement distance of the telescopic end of the regulating electromagnetic push rod 132 pushing the movable insulating block 133 becomes smaller, so the conductive ring 134 will move back a certain distance. At this time, the length of the resistor rod 135 squeezed into the connection circuit between the conductive ring 134 and the drive motor 94 becomes shorter, so that the current passed into the drive motor 94 becomes larger, thereby increasing the output power of the drive motor 94. At this time, the rotating speed of each static gear 91 driven by the movable gear 95 increases, so the rotating speed of each tubular membrane assembly 7 increases. At this time, the disturbance force between the water bodies between each tubular membrane assembly 7 increases, and the rotational centrifugal force on the tubular membrane assembly 7 increases, so the activated sludge and impurities attached to the surface of the tubular membrane assembly 7 can be thrown out, and the tubular membrane assembly 7 can be cleaned without backwashing the tubular membrane assembly 7, which is convenient to use;

[0049] When some tubular membrane components 7 are blocked by activated sludge or impurities, the water suction pressure at the water suction end of the water pump 111 remains unchanged, and each tubular membrane component 7 is connected to each suction pipe 112 through the hollow plate 8. Therefore, the water inlet pressure of each tubular membrane component 7 is redistributed, so that all tubular membrane components 7 are subjected to the same water inlet pressure, so that each tubular membrane component 7 is deformed inward. Therefore, when the tubular membrane component 7 is blocked, the light intensity received by each annular photosensitive element 124 will be reduced. Therefore, at this time, the current passed into each lifting electromagnetic push rod 142 will become smaller, so that each arc-shaped insulating strip 143 will move down a certain distance synchronously. Therefore, at this time, each conductive strip 144 will still maintain contact, so that the power supply circuit of the drive motor 94 remains When a tubular membrane assembly 7 is broken or damaged, the wastewater interception effect of the tubular membrane assembly 7 becomes worse, and the turbidity of the water entering the tubular membrane assembly 7 increases synchronously. Due to the increase in the turbidity of the water, the light intensity at the annular photosensitive element 124 irradiated to the inside of the tubular membrane assembly 7 will also become lower. At this time, the lifting electromagnetic push rod 142 corresponding to the annular photosensitive element 124 will move downward due to the decrease in the current passed through. Since other tubular membrane assemblies 7 are not damaged, the water inside other tubular membrane assemblies 7 maintains sufficient cleanliness. Therefore, the height of the arc insulating strip 143 corresponding to the damaged tubular membrane assembly 7 and the undamaged tubular membrane assembly 7 is There will be an obvious difference (the height difference is greater than 4cm), so that a certain conductive strip 144 is misaligned and separated from the adjacent conductive strip 144, thereby disconnecting the power supply circuit of the drive motor 94. At the same time, the power supply circuits of the normally open solenoid valve 152 and the normally closed solenoid valve 153 will also be disconnected (in the initial stage, since each conductive strip 144 remains in contact, after the control box 2 is started, the normally open solenoid valve 152 remains energized and closed, and the normally closed solenoid valve 153 remains energized and opened, and the clean water output by the water pump 111 is discharged through the clean water pipe 117). Therefore, at this time, the drive motor 94 stops working, and the normally open solenoid valve 152 will remain normally open due to the power failure, and the normally closed solenoid valve 153 will remain closed due to the power failure. Therefore, at this time, the water delivered by the water pump 111 will The clean water is discharged from the shunt pipe 151 through the clean water pipe 117 to prevent the discharge of waste water that has not been effectively treated. At the same time, since the water is discharged through the shunt pipe 151, under the action of the water flow pressure, the moving contact of the water flow switch 154 will be closed (when the water flows downward, a certain pressure will be applied to the moving contact of the water flow switch 154, so that the moving contact of the water flow switch 154 is closed), and the control box 2 will immediately receive the closing electrical signal of the water flow switch 154, and then the control box 2 will alarm through its own alarm module (for example, through a buzzer prompt). After receiving the alarm information, the staff can find out the damaged tubular membrane assembly 7 by checking the tubular membrane assembly 7 corresponding to the highly misaligned arc-shaped insulating strip 143 (a transparent plate is provided on the top of the circular slot box 141,A numbered label is installed on the top of each arc-shaped insulating strip 143, through which the corresponding tubular membrane assembly 7 can be found). Then, the staff shuts down the control box 2 and replaces the damaged tubular membrane assembly 7 in time;

[0050] When the tubular membrane assembly 7 is in use, under normal working pressure, the membrane material of the tubular membrane assembly 7 will undergo a certain degree of physical and chemical changes, such as the pore structure of the membrane may gradually be blocked, the membrane material may slowly age, etc., and when the pressure increases (for example, when the activated sludge or impurities block the tubular membrane assembly 7), according to fatigue theory and the durability principle of materials, excessive pressure will cause changes in the microstructure inside the membrane material, such as tiny cracks, deformation of the membrane pores, etc. These micro damages will gradually accumulate over time, and eventually lead to a decline in the performance of the tubular membrane assembly 7 until failure. When the tubular membrane assembly 7 is working normally, the moving gear 95 drives the tubular membrane assembly 7 to rotate slowly. At this time, every time the moving gear 95 rotates one circle, the light-transmitting hole 164 will pass through the spotlight 163 once. At this time, the light emitted by the spotlight 163 will irradiate the photoelectric switch At 162, the photoelectric switch 162 will immediately convert the optical signal into an electrical signal and output it to the control box 2. That is to say, every time the moving gear 95 rotates one circle, the control box 2 will receive an electrical signal output by the photoelectric switch 162. When the tubular membrane assembly 7 is blocked by impurities, activated sludge, etc., resulting in a greater water inlet pressure, the rotation speed of the moving gear 95 will simultaneously increase. At this time, the frequency of the electrical signal output by the photoelectric switch 162 will also increase synchronously, so the frequency of the electrical signal received by the control box 2 will also increase synchronously. When the counting module of the control box 2 measures the number of times reaching the threshold (the threshold is set according to the material of the tubular membrane assembly 7 and the types of wastewater pollutants generated by the electronics factory), the control box 2 will use its own alarm module to remind the personnel to replace the tubular membrane assembly 7 in time, thereby being able to automatically remind the personnel to replace the tubular membrane assembly 7 based on the water inlet pressure to which the tubular membrane assembly 7 is subjected.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bioreactor for wastewater treatment in an electronics factory, comprising an activated sludge tank (1) and a control box (2) arranged on the outer wall of the activated sludge tank (1), characterized in that: Also includes: A bottom plate (3) is mounted on the inner bottom of the activated sludge tank (1), the end surface of the bottom plate (3) being rotatably connected to a plurality of lower mounting plates (4), a top plate (5) being mounted inside the activated sludge tank (1) at a position above the bottom plate (3), the end surface of the top plate (5) being rotatably connected to a plurality of upper mounting sleeves (6), and a detachable tubular membrane assembly (7) being commonly mounted between each of the lower mounting plates (4) and the upper mounting sleeves (6) on the same side; A hollow plate (8) is arranged above the top plate (5) and fixed inside the activated sludge tank (1); the hollow plate (8) is installed with a driving unit (9), and the driving unit (9) drives each upper mounting sleeve (6) to rotate; an aeration mechanism (10) is installed on the side wall of the activated sludge tank (1), and each gas outlet end of the aeration mechanism (10) is respectively arranged between two adjacent tubular membrane modules (7); A pumping unit (11) is installed on the end surface of the hollow plate (8), and the pumping unit (11) is connected to the interior of each tubular membrane assembly (7); A plurality of detection units (12) are respectively arranged on the inner side of each of the tubular membrane assemblies (7); a resistance adjustment mechanism (13) is installed on the top of the hollow plate (8); the plurality of detection units (12) are electrically connected to the resistance adjustment mechanism (13) via a control box (2); and the resistance adjustment mechanism (13) is electrically connected to the driving unit (9) via the control box (2); An early warning trigger unit (14) is installed on the top of the hollow plate (8); the water outlet of the pumping unit (11) is connected to a prompt component (15); and the early warning trigger unit (14) is electrically connected to the prompt component (15) via a control box (2); the prompt component (15) is used to indicate that the tubular membrane component (7) is damaged; A replacement prompting unit (16) is installed on the side wall of the hollow plate (8) and is arranged at the driving end of the driving unit (9), and the replacement prompting unit (16) is used to prompt the replacement of the tubular membrane assembly (7); The driving unit (9) comprises a plurality of stationary gears (91) fixedly sleeved on the outer side wall of the upper mounting sleeve (6), and the plurality of stationary gears (91) in the same row are meshed with each other, the number of the upper mounting sleeves (6) in the same row is the same as the number in the same column, and a chain transmission assembly (92) is provided above the top plate (5), and the chain transmission assembly (92) drives the stationary gears (91) in obliquely symmetrical directions to rotate in the same direction; Each of the detection units (12) comprises an upper insulating groove ring (121) fixedly mounted on the bottom of the upper mounting sleeve (6), and a ring light (122) is fixedly mounted inside the upper insulating groove ring (121); a lower insulating groove ring (123) is fixedly mounted on the top of the lower mounting plate (4), and a ring light sensing element (124) is mounted inside the lower insulating groove ring (123); transparent ring plates (125) are mounted on the notches of the upper insulating groove ring (121) and the lower insulating groove ring (123); and the ring light (122) and the ring light sensing element (124) are electrically connected to the control box (2).

2. A bioreactor for wastewater treatment in an electronics factory according to claim 1, characterized in that: A mounting plate (93) is fixedly mounted on the side wall of the hollow plate (8), and a drive motor (94) is mounted on the end surface of the mounting plate (93). A moving gear (95) is mounted on the output end of the drive motor (94), and the moving gear (95) is transmission-connected to a stationary gear (91) on the same side. The drive motor (94) is electrically connected to the control box (2).

3. A bioreactor for wastewater treatment in an electronics factory according to claim 2, characterized in that: The pumping unit (11) comprises a water pump (111) fixedly mounted on the top of the hollow plate (8); a water suction end of the water pump (111) is connected to the inside of the hollow plate (8); a plurality of water suction pipes (112) are fixedly plugged into the bottom of the hollow plate (8); a through hole (113) is formed on the end surface of each of the static gears (91); and each of the water suction pipes (112) passes through a corresponding through hole (113) and extends to the tubular membrane assembly (7) on the same side. On the inner side, each of the water suction pipes (112) is installed with a first electrically controlled valve (114); a water supply pipe (115) is fixedly plugged into the end surface of the hollow plate (8), and a second electrically controlled valve (116) is installed inside the water supply pipe (115); the water pump (111), the first electrically controlled valve (114) and the second electrically controlled valve (116) are all electrically connected to the control box (2); and a clean water pipe (117) is installed at the water outlet of the water pump (111).

4. A bioreactor for wastewater treatment in an electronics factory according to claim 3, characterized in that: The resistance adjustment mechanism (13) comprises an insulating cover (131) fixedly mounted on the top of the hollow plate (8); an adjusting electromagnetic push rod (132) is fixedly mounted on the inner wall of one side of the insulating cover (131); a movable insulating block (133) is mounted on the telescopic end of the adjusting electromagnetic push rod (132); a conductive ring (134) is fixedly inserted into the side wall of the movable insulating block (133); a resistance rod (135) is fixedly mounted on the inner wall of the insulating cover (131) away from the adjusting electromagnetic push rod (132); the resistance rod (135) is in sliding contact with the inner wall of the conductive ring (134); each of the annular photosensitive elements (124) is connected in series with the adjusting electromagnetic push rod (132) via a control box (2); and the conductive ring (134) and the resistance rod (135) are electrically connected to a drive motor (94) via the control box (2).

5. A bioreactor for wastewater treatment in an electronics factory according to claim 4, characterized in that: The early warning trigger unit (14) comprises a circular slot box (141) fixedly mounted on the top of the hollow plate (8), and a plurality of lifting electromagnetic push rods (142) are fixedly mounted inside the circular slot box (141), and each of the lifting electromagnetic push rods (142) is evenly distributed in a ring shape within a range of 330° about the axis of the circular slot box (141), and each of the lifting electromagnetic push rods (142) is installed with an arc-shaped insulating strip (143) at the telescopic end, and each of the two ends of the arc-shaped insulating strip (143) is fixedly mounted with a conductive strip (144), and two adjacent conductive strips (144) are in sliding contact, and each of the annular photosensitive elements (124) is electrically connected to the corresponding lifting electromagnetic push rod (142) through the control box (2), and each of the conductive strips (144) is electrically connected to the drive motor (94) through the control box (2).

6. A bioreactor for wastewater treatment in an electronics factory according to claim 5, characterized in that: The prompt component (15) comprises a shunt pipe (151) fixedly connected to the wall of the clean water pipe (117); a normally open solenoid valve (152) is installed inside the shunt pipe (151); a normally closed solenoid valve (153) is provided on the side of the clean water pipe (117) close to the water outlet; the water inlet end of the shunt pipe (151) is provided between the normally closed solenoid valve (153) and the water outlet end of the water pump (111); each of the conductive strips (144) is connected in series with the normally open solenoid valve (152) and the normally closed solenoid valve (153) via a control box (2); a water flow switch (154) is installed inside the shunt pipe (151), and the water flow switch (154) is electrically connected to the control box (2).

7. The bioreactor for wastewater treatment in an electronics factory according to claim 2, characterized in that: The replacement prompt unit (16) comprises an L-shaped plate (161) fixedly mounted on the lower end of the mounting plate (93); a photoelectric switch (162) is fixedly mounted on the horizontal portion of the L-shaped plate (161); a spotlight (163) corresponding to the position of the photoelectric switch (162) is fixedly mounted on the lower end of the mounting plate (93); a light-transmitting hole (164) is formed on the end surface of the movable gear (95); and light emitted by the spotlight (163) is irradiated to the photosensitive end of the photoelectric switch (162) through the light-transmitting hole (164); and the spotlight (163) and the photoelectric switch (162) are both electrically connected to the control box (2).

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