Biological micro-electrolysis reaction system for hydrolytic acidification wastewater treatment

Abstract

The biological micro-electrolysis reaction system comprises a biological micro-electrolysis reaction tank, an anode filler and a cathode filtering device, a water inlet pipe is arranged on one side, close to the bottom end, of the biological micro-electrolysis reaction tank, and a water outlet pipe is arranged on one side, away from the water inlet pipe, of the biological micro-electrolysis reaction tank, close to the top end. A sludge discharge system is arranged in the biological micro-electrolysis reaction tank; the cathode filtering device comprises a cuboid frame formed by plastic pipes and a screen filter cover, the screen filter cover is wrapped outside the cuboid frame, one of the six surfaces of the cuboid frame is not wrapped, and the water outlet pipe is communicated with the interior of the cuboid frame. The carbon fiber filler of the anode is beneficial to biofilm formation of microorganisms, a micro-current environment is formed, enrichment growth of conductive or electrophilic microorganisms is promoted, degradation-resistant organic matters in a water body are degraded through efficient direct electron transfer, the hydrolytic acidification effect is improved, and high-concentration degradation-resistant complex wastewater is effectively treated.

Description

Technical Field

[0001] The invention relates to the technical field of hydrolysis acidification wastewater treatment, and in particular to a biological micro-electrolysis reaction system for hydrolysis acidification wastewater treatment. Background Art

[0002] In recent years, hydrolysis acidification technology has been widely used as a pre-treatment method for certain biological treatment processes (such as aerobic processes) to treat high-concentration difficult-to-degrade complex wastewater, such as pharmaceutical wastewater, printing and dyeing wastewater, papermaking wastewater and petrochemical wastewater. Hydrolysis acidification technology can use the unique transformation and degradation ability of anaerobic microorganisms to certain difficult-to-degrade substances and toxic organic matter to reduce the biological toxicity of wastewater, and convert difficult-to-degrade macromolecular organic matter into small molecular substances that are easy to biodegrade, effectively improving the biodegradability of wastewater, while removing some organic matter, which can create stable and excellent water inlet conditions for subsequent biological treatment.

[0003] However, on the one hand, during the hydrolysis and acidification process, the hydrolysis and acidification bacteria involved in substrate oxidation often use H 2 As an electron carrier, it transfers the electrons generated by it to organic pollutants to achieve the reduction of core functional groups. 2 The low solubility in water greatly limits the speed of electron transfer; on the other hand, it is difficult for hydrolytic acidifying bacteria to degrade organic matter containing a large number of heterocyclic or polycyclic rings. In recent years, studies have found that microorganisms can directly transfer electrons through redox proteins (such as cytochromes) in the cell membrane or extracellular matrix, and conductive pili on the cell membrane, etc., and their efficiency is higher than that of traditional interspecies electron transfer. Therefore, researchers have developed a variety of methods to improve the efficiency of extracellular electron transfer in anaerobic reactors, such as adding cheap and readily available conductive materials (biochar, activated carbon fiber, etc.) to provide carriers for anaerobic microorganisms to promote the efficiency of extracellular electron transfer. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a biological micro-electrolysis reaction system for hydrolyzing acidified wastewater treatment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A biological micro-electrolysis reaction system for treating acidified wastewater comprises a biological micro-electrolysis reaction cell, an anode filler and a cathode filter device, wherein a water inlet pipe is arranged near the bottom end of one side of the biological micro-electrolysis reaction cell, a water outlet pipe is arranged near the top end of the side of the biological micro-electrolysis reaction cell away from the water inlet pipe, and a mud discharge system is arranged inside the biological micro-electrolysis reaction cell; The cathode filter device includes a rectangular frame made of plastic tubes and a screen filter cover, the screen filter cover is wrapped around the outside of the rectangular frame, and one side of the six faces of the rectangular frame is not wrapped, the water outlet pipe is connected to the inside of the rectangular frame, the bottom of the cathode filter device is located below the water surface, the top of the cathode filter device is located above the water surface, the anode filler and the cathode filter device are connected by a copper wire, and the copper wire is connected to the electrochemical workstation.

[0006] Preferably, the anode filler comprises an anode support frame, on which a plurality of vertically arranged stainless steel wire ropes are fixed, and on which a plurality of carbon fiber fillers are evenly distributed from top to bottom.

[0007] Preferably, a height adjustment mechanism is also provided in the biological micro-electrolysis reaction pool, and the height adjustment mechanism is used to adjust the height of the cathode filter device to maintain its relative position with the water surface. The height adjustment mechanism includes a turntable installed on the side wall of the biological micro-electrolysis reaction pool, and the top end of the water outlet pipe is bent to a horizontal state and faces the center of the turntable, and is connected to a first connecting pipe through a first rotating joint. The end of the first connecting pipe away from the first rotating joint passes through the edge of the turntable and extends horizontally to the interior of the biological micro-electrolysis reaction pool, and the first connecting pipe is rotatably connected to the turntable.

[0008] Preferably, the end of the first connecting tube away from the first rotating joint is rotatably connected to the second connecting tube, the second connecting tube and the first connecting tube are perpendicular to each other, a vertical slide rail is fixed on the inner wall of the biological micro-electrolysis reaction cell, a lifting bracket is slidably installed on the vertical slide rail, a third connecting tube is fixed on the lifting bracket, one end of the second connecting tube movably extends into the third connecting tube, one end of the third connecting tube away from the second connecting tube extends to the interior of the rectangular frame and a plurality of water inlet holes are opened at the bottom.

[0009] Preferably, a gear is fixed on the turntable, a push rod motor is fixed on the outer wall of the biological micro-electrolysis reaction cell, a rack is fixed on the output shaft of the push rod motor, and the rack is meshed with the gear.

[0010] Preferably, two vertically arranged first guide rods are fixed to the top of the lifting bracket, a horizontal bar is fixed between the tops of the two first guide rods, a guide sleeve is fixed to the outside of the first guide rod, a floating block is fixed on the guide sleeve, a first spring is provided at the top of the guide sleeve, top blocks are provided at the top and bottom of the floating block, an upper pressure switch is provided under the horizontal bar, and a lower pressure switch is provided at the top of the lifting bracket, and the upper pressure switch and the lower pressure switch are used to control the push rod motor.

[0011] Preferably, a flushing switch is fixed on the top of a section of the third connecting pipe located inside the rectangular frame, a backwashing pipe is connected to the flushing switch, a distribution cross pipe is connected to the backwashing pipe, the distribution cross pipe is connected to the plastic pipe, and a plurality of backwashing water outlet holes are provided on the plastic pipe.

[0012] Preferably, a lifting plate is movably installed inside the flushing switch, a lifting rod is fixed to the top of the lifting plate, a second spring is fixed between the top of the lifting plate and the top inner wall of the flushing switch, a first sealing plate is fixed to the bottom of the lifting plate, and a second sealing plate is fixed to the side of the bottom of the lifting plate close to the backwash pipe.

[0013] Preferably, the top end of the lifting rod movably extends to the outside of the flushing switch and the screen filter cover, and a trigger bar is fixed on the inner wall of the biological micro-electrolysis reaction cell, and the position of the trigger bar corresponds to the lifting rod.

[0014] Preferably, one end of the water inlet pipe extending into the biological micro-electrolysis reaction cell is connected to an annular water distribution pipe, and a plurality of water distribution holes are provided on the annular water distribution pipe.

[0015] Preferably, the mud discharge system comprises a plurality of mud collecting grooves arranged on the inner wall of the bottom end of the biological micro-electrolysis reaction cell, and mud discharge branch pipes are rotatably installed in the mud collecting grooves, and the mud discharge branch pipes are provided with a plurality of blades and mud discharge holes.

[0016] Preferably, one end of the mud discharge branch pipe extends to the outside of the biological micro-electrolysis reaction cell, and a mud discharge main pipe is fixed to the outside of the biological micro-electrolysis reaction cell near the bottom end. The mud discharge branch pipe is connected to the mud discharge main pipe through a second rotating joint, and adjacent mud discharge branch pipes are synchronously driven by a belt, and power is input through a first rotating motor.

[0017] Preferably, a scraper is provided in the biological micro-electrolysis reaction pool, the bottom end of the scraper contacts the inner wall of the biological micro-electrolysis reaction pool, connecting rods are fixed on both sides of the top of the scraper, and the top of the connecting rods extends to the outside of the biological micro-electrolysis reaction pool.

[0018] Preferably, a horizontal moving bar is fixed between the top ends of the two connecting rods, a second guide rod is fixed to the top end of the biological micro-electrolysis reaction cell, and the second guide rod movably penetrates the horizontal moving bar.

[0019] Preferably, a threaded rod is rotatably mounted on the top of the biological micro-electrolysis reaction cell, the threaded rod is driven to rotate by a second rotary motor, and the threaded rod passes through the horizontal moving bar through a threaded hole.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. Efficient electron transfer and degradation: The carbon fiber filler of the anode is conducive to the formation of microbial biofilm and forms a microcurrent environment, which promotes the enrichment and growth of conductive or electrophilic microorganisms. Through efficient direct electron transfer, it degrades the difficult-to-degrade organic matter in the water, improves the hydrolysis and acidification effect, and effectively treats high-concentration difficult-to-degrade complex wastewater.

[0021] 2. Optimization of cathode filter device: The unique structure of the cathode filter device and its connection design with the water outlet pipe, combined with a screen of specific specifications, uses the capillary action of water to keep it moist for electron absorption, which can effectively filter the treated water and prevent blockage, thereby increasing the water intake.

[0022] 3. Convenient and accurate height adjustment: The height adjustment mechanism can actively and accurately adjust the height of the cathode filter device through the cooperation of components such as the turntable, connecting pipe, push rod motor, etc., so that it maintains a suitable relative position with the water surface, overcoming the problems of height loss of control and frequent maintenance caused by the accumulation of filtered materials in the traditional buoyancy adjustment method.

[0023] 4. Automatic height maintenance stability: With the help of the floating block, guide sleeve, pressure switch and height adjustment mechanism, the rise and fall of the cathode filter device can be automatically controlled according to the relative height of the water surface, ensuring stable adjustment within a small range and maintaining stable operation of the system.

[0024] 5. The screen filter cover is self-cleaning and efficient: the backwashing system composed of the flushing switch, backwashing pipe, distribution cross pipe and backwashing water outlet can automatically switch to the backwashing state when the cathode filter device rises to a specific position, and efficiently clean the screen filter cover from the inside to ensure the filtration efficiency.

[0025] 6. The sludge discharge system is multifunctional and efficient: The sludge discharge branch pipe, blade, sludge discharge hole and sludge discharge main pipe of the sludge discharge system are combined. Driven by the first rotating motor, they can not only stir and break the sludge to prevent caking and blockage, but also allow the introduction of cleaning liquid for backwashing; the scraper can scrape the sludge into the sludge collecting groove driven by the second rotating motor, threaded rod, etc. The two work together to improve the sludge discharge efficiency and effect, and ensure the normal operation of the reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a cross-sectional view from the main perspective of the biological micro-electrolysis reaction cell of the present invention; Figure 3This is an enlarged view of the distribution of the carbon fiber filler on the stainless steel wire rope of the present invention; Figure 4 This is a schematic diagram of the distribution of mud discharge branch pipes of the present invention; Figure 5 It is a schematic diagram of the biological micro-electrolysis reaction cell of the present invention from a bottom-up perspective; Figure 6 It is a schematic diagram of the scraper driving of the present invention; Figure 7 for Figure 5 A zoomed-in detail of position A in the middle; Figure 8 This is an enlarged detail view of the mud discharge branch pipe of the present invention; Fig. 9 It is a schematic diagram of the height adjustment mechanism of the present invention from a first viewing angle; Fig.10 A second viewing angle schematic diagram of the height adjustment mechanism of the present invention; Fig.11 This is a schematic diagram of a state in which the height adjustment mechanism of the present invention adjusts the cathode filter device to be at the highest height; Fig.12 This is a schematic diagram of a state in which the height adjustment mechanism of the present invention adjusts the cathode filter device to be located at an intermediate height; Fig.13 This is an enlarged detail view of the first viewing angle of the floating position of the present invention; Fig.14 This is an enlarged detail view of the second viewing angle of the floating fast position of the present invention; Fig.15 This is an enlarged detail view of the floating fast position of the present invention from a third viewing angle; Fig.16 It is a schematic diagram of the internal structure of the flushing switch of the present invention; Fig.17 A schematic diagram of the connection relationship between the first blocking plate and the second blocking plate of the present invention; In the figure: 1. biological micro-electrolysis reaction cell; 101. water inlet pipe; 1011. annular water distribution pipe; 2. water outlet pipe; 201. first rotary joint; 202. turntable; 2021. gear; 203. first connecting pipe; 2031. second connecting pipe; 204. push rod motor; 205. rack; 3. cathode filter device; 301. plastic pipe; 3011. backwashing water outlet hole; 302. mesh filter cover; 4. anode support frame; 401. stainless steel wire rope; 402. carbon fiber filler; 5. mud discharge system; 501. mud collecting groove; 502. mud discharge branch pipe; 5021. blade; 5022. mud discharge hole; 503. mud discharge main pipe; 5031. second rotary joint; 504. belt; 505. first rotating motor; 6. Vertical slide rail; 601. Lifting bracket; 6011. First guide rod; 6012. Guide sleeve; 6013. Floating fast; 6014. Horizontal bar; 6015. First spring; 6016. Upper pressure switch; 6017. Top block; 6018. Lower pressure switch; 602. Third connecting pipe; 603. Water inlet hole; 604. Flushing switch; 6041. Lifting plate; 6042. Lifting rod; 6043. Trigger bar; 6044. Second spring; 6045. First blocking plate; 6046. Second blocking plate; 605. Backwashing pipe; 606. Distribution horizontal pipe; 7. Scraper; 701. Connecting rod; 702. Horizontal moving bar; 703. Second guide rod; 704. Second rotating motor; 705. Threaded rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0029] Reference Figure 1-17 A biological micro-electrolysis reaction system for treating hydrolysis acidified wastewater comprises a biological micro-electrolysis reaction cell 1, an anode filler and a cathode filter device 3, a water inlet pipe 101 is arranged near the bottom end of one side of the biological micro-electrolysis reaction cell 1, a water outlet pipe 2 is arranged near the top end of the side of the biological micro-electrolysis reaction cell 1 away from the water inlet pipe 101, and a mud discharge system 5 is arranged inside the biological micro-electrolysis reaction cell 1; The cathode filter device 3 includes a rectangular frame composed of a plastic tube 301 and a screen filter cover 302. The screen filter cover 302 is wrapped on the outside of the rectangular frame, and one side of the six faces of the rectangular frame is not wrapped. In order to increase the water intake, the water intake of the cathode filter device 3 and prevent blockage, the outlet pipe 2 is connected to the inside of the rectangular frame. The bottom of the cathode filter device 3 is located below the water surface, and the top of the cathode filter device 3 is located above the water surface. The molecular oxygen in the air can be directly used as an electron acceptor, and its electron receiving capacity is much greater than the combined oxygen or other electron acceptors in the traditional hydrolysis acidification anaerobic or anoxic environment, thereby further accelerating the degradation rate of pollutants. The anode filler and the cathode filter device 3 are connected by a copper wire, and the copper wire is connected to the electrochemical workstation. The screen filter cover 302 uses a stainless steel screen with a mesh size of 20-100. The use of a stainless steel screen of this specification can utilize the capillary action of water to keep the entire stainless steel screen moist, which is beneficial to the electron absorption of the cathode; The anode filler comprises an anode support frame 4 , on which a plurality of vertically arranged stainless steel wire ropes 401 are fixed, and on the stainless steel wire ropes 401 , a plurality of carbon fiber fillers 402 are evenly distributed from top to bottom.

[0030] The carbon fiber filler 402 is conducive to the formation of microbial biofilm and acts as the anode of the electric field to form a microcurrent environment around the anode, which is selectively formed to facilitate the enrichment and growth of conductive or electrophilic microorganisms, degrade difficult-to-degrade organic matter in the water body, and better achieve the effect of hydrolysis and acidification. In the biological micro-electrolysis reaction pool 1, microorganisms can directly transfer electrons through redox proteins (such as cytochromes) in the cell membrane or extracellular matrix, conductive pili on the cell membrane, etc., and its efficiency is higher than that of traditional interspecies electron transfer. Wastewater enters through the water inlet pipe 101, and the treated water is filtered by the cathode filter device 3 and then flows out from the water outlet pipe 2, thereby continuously treating the sewage. Example 2

[0031] Reference Figure 1-17 The difference between this embodiment and embodiment 1 is that a height adjustment mechanism is further provided in the biological micro-electrolysis reaction pool 1, and the height adjustment mechanism is used to adjust the height of the cathode filter device 3 to maintain its relative position with the water surface. The height adjustment mechanism includes a turntable 202 installed on the side wall of the biological micro-electrolysis reaction pool 1, and the top of the outlet pipe 2 is bent to a horizontal state and faces the center of the turntable 202, and is connected to a first connecting pipe 203 through a first rotating joint 201. One end of the first connecting pipe 203 away from the first rotating joint 201 penetrates from the edge of the turntable 202 and extends horizontally to the inside of the biological micro-electrolysis reaction pool 1, and the first connecting pipe 203 is rotatably connected to the turntable 202. When the turntable 202 rotates counterclockwise (refer to Fig.11) can drive the first connecting tube 203 to follow and move along the arc line, thereby lowering the height of the first connecting tube 203. When it rotates counterclockwise for 90 degrees, it will rotate to Fig.12 height.

[0032] Among them, one end of the first connecting tube 203 away from the first rotating joint 201 is rotatably connected to the second connecting tube 2031, the second connecting tube 2031 and the first connecting tube 203 are perpendicular to each other, a vertical slide rail 6 is fixed on the inner wall of the biological micro-electrolysis reaction pool 1, a lifting bracket 601 is slidably installed on the vertical slide rail 6, and a third connecting tube 602 is fixed on the lifting bracket 601, one end of the second connecting tube 2031 is movably extended into the third connecting tube 602, and one end of the third connecting tube 602 away from the second connecting tube 2031 extends to the inside of the rectangular parallelepiped frame and a plurality of water inlet holes 603 are opened at the bottom; In the first connecting pipe 203, Figure 11 to Figure 12 During the conversion between the two states, due to the restriction of the third connecting pipe 602 on the second connecting pipe 2031, the second connecting pipe 2031 maintains a horizontal state and moves downward, and moves horizontally relative to the third connecting pipe 602, which will drive the third connecting pipe 602 to move vertically downward, and then drive the cathode filter device 3 to move vertically downward. The turntable 202 can drive the cathode filter device 3 to move downward by rotating counterclockwise, and can drive the cathode filter device 3 to move upward by rotating clockwise, thereby actively adjusting the height of the cathode filter device 3, and can conveniently maintain the cathode filter device 3 at a suitable relative position height with the water surface. Compared with the transmission method through the buoyancy of the cathode filter device 3 itself or an external buoyant object, the height is easier to control. The traditional automatic buoyancy adjustment method is easy to increase the overall weight after being used for a period of time due to the filter wrapped on the surface of the cathode filter device 3, resulting in insufficient buoyancy, requiring more frequent cleaning and maintenance, or flushing gas into the inflatable floating object.

[0033] Among them, a gear 2021 is fixed on the turntable 202, a push rod motor 204 is fixed on the outer wall of the biological micro-electrolysis reaction cell 1, and a rack 205 is fixed to the output shaft of the push rod motor 204. The rack 205 is meshed with the gear 2021. By controlling the extension and retraction of the push rod motor 204, the rack 205 can be driven to move horizontally, and then the turntable 202 can be driven to rotate through the meshing of the rack 205 and the gear 2021. Example 3

[0034] Reference Figure 1-17The difference between this embodiment and the second embodiment is that two vertically arranged first guide rods 6011 are fixed to the top of the lifting bracket 601, a horizontal bar 6014 is fixed between the tops of the two first guide rods 6011, a guide sleeve 6012 is fixed to the outside of the first guide rod 6011, a floating block 6013 is fixed on the guide sleeve 6012, a first spring 6015 is provided at the top of the guide sleeve 6012, a top block 6017 is provided at the top and bottom of the floating block 6013, an upper pressure switch 6016 is provided below the horizontal bar 6014, and a lower pressure switch 6018 is provided at the top of the lifting bracket 601, and the upper pressure switch 6016 and the lower pressure switch 6018 are used to control the push rod motor 204; After the floating block 6013 is completely submerged in the water, the height of the cathode filter device 3 is too low relative to the water surface. The buoyancy generated by the floating block 6013 will compress the first spring 6015, so that the top block 6017 touches the upper pressure switch 6016, thereby turning on the upper pressure switch 6016. At this time, the push rod motor 204 will be controlled to extend, thereby driving the turntable 202 to rotate clockwise, thereby driving the cathode filter device 3 to move upward. When the floating block 6013 is completely out of the water, the height of the cathode filter device 3 is too high relative to the water surface. At this time, due to the elastic force of the first spring 6015 plus the gravity of the floating block 6013 itself, the top block 6017 will be pushed to touch the lower pressure switch 6018, thereby turning on the lower pressure switch 6018. At this time, the push rod motor 204 will be controlled to shorten, thereby driving the turntable 202 to rotate counterclockwise, thereby driving the cathode filter device 3 to move downward, thereby achieving the purpose of automatic adjustment, ensuring that the relative position of the cathode filter device 3 and the liquid surface is automatically adjusted within a smaller range. Example 4

[0035] Reference Figure 1-17 The difference between this embodiment and embodiment 3 is that a flushing switch 604 is fixed to the top of a section of the third connecting pipe 602 located inside the rectangular parallelepiped frame, a backwashing pipe 605 is connected to the flushing switch 604, a distribution transverse pipe 606 is connected to the backwashing pipe 605, the distribution transverse pipe 606 is connected to the plastic pipe 301, and a plurality of backwashing water outlet holes 3011 are provided on the plastic pipe 301; After being used for a period of time, the mesh filter cover 302 outside the cathode filter device 3 will be blocked, affecting the filtering efficiency. At this time, the mesh filter cover 302 needs to be cleaned. It is only necessary to cut off the water inlet hole 603 through the flushing switch 604 to connect the third connecting pipe 602 with the backwashing pipe 605. At this time, the backwashing liquid is introduced through the outlet pipe 2. The backwashing liquid will enter the plastic pipe 301 after being evenly distributed through the distribution cross pipe 606, and will be sprayed out through each backwashing outlet hole 3011, so as to flush the mesh filter cover 302 from the inside, and the mesh filter cover 302 can be cleaned efficiently.

[0036] Among them, a lifting plate 6041 is movably installed inside the flushing switch 604, a lifting rod 6042 is fixed to the top of the lifting plate 6041, a second spring 6044 is fixed between the top of the lifting plate 6041 and the top inner wall of the flushing switch 604, a first blocking plate 6045 is fixed to the bottom of the lifting plate 6041, and a second blocking plate 6046 is fixed to the side of the bottom of the lifting plate 6041 close to the backwashing pipe 605; When the second spring 6044 is in a relaxed state, it will pull the lifting plate 6041 to rise to the highest state. At this time, the second blocking plate 6046 just blocks the backwash pipe 605, and the water inlet hole 603 and the third connecting pipe 602 are connected to each other. At this time, it is a drainage state. When the cathode filter device 3 needs to be cleaned, it only needs to drive the cathode filter device 3 to move upward to the highest state. At this time, the cathode filter device 3 is separated from the water surface, and the top of the lifting rod 6042 is movably extended to the outside of the flushing switch 604 and the screen filter cover 302, and a trigger bar 6043 is fixed on the inner wall of the biological micro-electrolysis reaction cell 1. The position of the trigger bar 6043 corresponds to the lifting rod 6042. The trigger bar 6043 will overcome the elastic force of the second spring 6044 and press the lifting rod 6042 downward, so that the first blocking plate 6045 descends to block the water inlet hole 603, and the second blocking plate 6046 is staggered with the backwash pipe 605. At this time, it is a backwash state, which can achieve the purpose of automatic switching.

[0037] Among them, one end of the water inlet pipe 101 extending to the inside of the biological micro-electrolysis reaction tank 1 is connected to a ring-shaped water distribution pipe 1011, and a plurality of water distribution holes are opened on the ring-shaped water distribution pipe 1011 to achieve the purpose of uniform water distribution. Example 5

[0038] Reference Figure 1-17 The difference between this embodiment and embodiment 1 is that the mud discharge system 5 includes a plurality of mud collecting grooves 501 arranged on the inner wall of the bottom end of the biological micro-electrolysis reaction pool 1, a mud discharge branch pipe 502 is rotatably installed in the mud collecting groove 501, a plurality of blades 5021 and mud discharge holes 5022 are arranged on the mud discharge branch pipe 502, one end of the mud discharge branch pipe 502 extends to the outside of the biological micro-electrolysis reaction pool 1, a mud discharge main pipe 503 is fixed near the bottom of the outside of the biological micro-electrolysis reaction pool 1, the mud discharge branch pipe 502 is connected to the mud discharge main pipe 503 through a second rotating joint 5031, and the adjacent mud discharge branch pipes 502 are synchronously driven by a belt 504, and power is input through a first rotating motor 505; The first rotating motor 505 can drive multiple sludge discharge branch pipes 502 to rotate synchronously, and the blade 5021 can be used to stir and crush the sludge accumulated at the bottom of the biological micro-electrolysis reaction pool 1 to prevent the sludge from agglomerating and block the sludge discharge holes 5022 to ensure that the sludge can be discharged more smoothly. Cleaning liquid can be introduced into the biological micro-electrolysis reaction pool 1 through the sludge discharge main pipe 503 for backwashing.

[0039] Among them, a scraper 7 is provided in the biological micro-electrolysis reaction pool 1, and the bottom end of the scraper 7 contacts the inner wall of the biological micro-electrolysis reaction pool 1. Connecting rods 701 are fixed on both sides of the top of the scraper 7. The top of the connecting rod 701 extends to the outside of the biological micro-electrolysis reaction pool 1. A horizontal moving bar 702 is fixed between the tops of the two connecting rods 701. A second guide rod 703 is fixed on the top of the biological micro-electrolysis reaction pool 1. The second guide rod 703 movably penetrates the horizontal moving bar 702. A threaded rod 705 is rotatably installed on the top of the biological micro-electrolysis reaction pool 1. The threaded rod 705 is driven to rotate by a second rotating motor 704, and the threaded rod 705 penetrates the horizontal moving bar 702 through a threaded hole; When the second rotating motor 704 is turned on, it can drive the threaded rod 705 to rotate, and cooperate with the guiding function of the second guide rod 703 to drive the horizontal moving bar 702 to move horizontally, and then drive the scraper 7 to move horizontally, so as to scrape the sludge accumulated at the bottom of the biological micro-electrolysis reaction tank 1, and can scrape the sludge into the sludge collecting groove 501, which can improve the sludge discharge efficiency and effect.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bio-micro-electrolysis reaction system for treating hydrolysis acidified wastewater, comprising a bio-micro-electrolysis reaction cell (1), an anode filler and a cathode filtration device (3), characterized in that: A water inlet pipe (101) is provided on one side of the biological micro-electrolysis reaction pool (1) near the bottom, a water outlet pipe (2) is provided on the side of the biological micro-electrolysis reaction pool (1) away from the water inlet pipe (101) near the top, and a mud discharge system (5) is provided inside the biological micro-electrolysis reaction pool (1); The cathode filter device (3) comprises a rectangular parallelepiped frame formed of a plastic tube (301) and a screen filter cover (302); the screen filter cover (302) is wrapped around the outside of the rectangular parallelepiped frame, and one side of the six faces of the rectangular parallelepiped frame is not wrapped; the water outlet pipe (2) is connected to the inside of the rectangular parallelepiped frame; the bottom of the cathode filter device (3) is located below the water surface; the top of the cathode filter device (3) is located above the water surface; the anode filler and the cathode filter device (3) are connected via a copper wire, and the copper wire is connected to an electrochemical workstation.

2. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 1, characterized in that: The anode filler comprises an anode support frame (4), on which a plurality of vertically arranged stainless steel wire ropes (401) are fixed, and on which a plurality of carbon fiber fillers (402) are evenly distributed from top to bottom.

3. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 1, characterized in that: The biological micro-electrolysis reaction pool (1) is also provided with a height adjustment mechanism, which is used to adjust the height of the cathode filter device (3) to maintain its relative position with the water surface, and the height adjustment mechanism comprises a turntable (202) mounted on the side wall of the biological micro-electrolysis reaction pool (1), the top end of the water outlet pipe (2) is bent to a horizontal state and faces the center of the turntable (202), and is connected to a first connecting pipe (203) via a first rotating joint (201), and one end of the first connecting pipe (203) away from the first rotating joint (201) passes through the edge of the turntable (202) and extends horizontally to the inside of the biological micro-electrolysis reaction pool (1), and the first connecting pipe (203) is rotatably connected to the turntable (202).

4. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 3, characterized in that: One end of the first connecting tube (203) away from the first rotating joint (201) is rotatably connected to the second connecting tube (2031); the second connecting tube (2031) and the first connecting tube (203) are perpendicular to each other; a vertical slide rail (6) is fixed on the inner wall of the biological micro-electrolysis reaction pool (1); a lifting bracket (601) is slidably mounted on the vertical slide rail (6); a third connecting tube (602) is fixed on the lifting bracket (601); one end of the second connecting tube (2031) movably extends into the third connecting tube (602); one end of the third connecting tube (602) away from the second connecting tube (2031) extends to the interior of the rectangular parallelepiped frame and a plurality of water inlet holes (603) are opened at the bottom.

5. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 4, characterized in that: A gear (2021) is fixed on the rotating disk (202), a push rod motor (204) is fixed on the outer wall of the biological micro-electrolysis reaction cell (1), a rack (205) is fixed on the output shaft of the push rod motor (204), and the rack (205) is meshed with the gear (2021).

6. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 5, characterized in that: Two vertically arranged first guide rods (6011) are fixed to the top of the lifting bracket (601), a horizontal bar (6014) is fixed between the tops of the two first guide rods (6011), a guide sleeve (6012) is fixed to the outside of the first guide rod (6011), a floating block (6013) is fixed on the guide sleeve (6012), a first spring (6015) is provided at the top of the guide sleeve (6012), a top block (6017) is provided at the top and bottom of the floating block (6013), an upper pressure switch (6016) is provided below the horizontal bar (6014), and a lower pressure switch (6018) is provided at the top of the lifting bracket (601), and the upper pressure switch (6016) and the lower pressure switch (6018) are used to control the push rod motor (204).

7. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 6, characterized in that: A flushing switch (604) is fixed to the top of a section of the third connecting pipe (602) located inside the rectangular parallelepiped frame, the flushing switch (604) is connected to a backwashing pipe (605), the backwashing pipe (605) is connected to a distribution transverse pipe (606), the distribution transverse pipe (606) is in communication with the plastic pipe (301), and the plastic pipe (301) is provided with a plurality of backwashing water outlet holes (3011).

8. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 7, characterized in that: A lifting plate (6041) is movably installed inside the flushing switch (604), a lifting rod (6042) is fixed to the top of the lifting plate (6041), a second spring (6044) is fixed between the top of the lifting plate (6041) and the inner wall of the top of the flushing switch (604), a first sealing plate (6045) is fixed to the bottom of the lifting plate (6041), and a second sealing plate (6046) is fixed to the side of the bottom of the lifting plate (6041) close to the backwashing pipe (605).

9. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 8, characterized in that: The top end of the lifting rod (6042) movably extends to the outside of the flushing switch (604) and the screen filter cover (302), and a trigger bar (6043) is fixed on the inner wall of the biological micro-electrolysis reaction pool (1), and the position of the trigger bar (6043) corresponds to the lifting rod (6042).

10. The biological micro-electrolysis reaction system for treating acidified wastewater according to claim 1, characterized in that: One end of the water inlet pipe (101) extending into the interior of the biological micro-electrolysis reaction pool (1) is connected to an annular water distribution pipe (1011), and a plurality of water distribution holes are provided on the annular water distribution pipe (1011).

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