Treatment equipment for metal catalyst production wastewater

Abstract

The invention relates to the technical field of wastewater treatment, in particular to treatment equipment for metal catalyst production wastewater. Comprising a machine frame and four treatment systems, a core cylinder is installed on the machine frame, a bevel gear ring is rotatably installed on the machine frame, an upper rotating cylinder and a lower rotating cylinder are rotatably installed on the core cylinder, the lower rotating cylinder and the bevel gear ring are driven by independent motors respectively, and a filtering station, a suction station, an air station and a steam station are sequentially arranged on the machine frame in the clockwise direction. The upper end of the core cylinder and the positions corresponding to the filtering station, the air station and the steam station are each provided with a gear ring, and the central angles corresponding to effective meshing areas on the three sector gear rings are increased by 25 degrees in the clockwise direction. The device and the method have the beneficial effects that the removal efficiency of heavy metals and organic pollutants in the metal catalyst production wastewater is remarkably improved through cooperative linkage of four-station continuous switching, active carbon cylinder dynamic adsorption and stepped regeneration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a treatment equipment for metal catalyst production wastewater. BACKGROUND

[0002] A large amount of complex wastewater is generated in the production process of metal catalysts, and such wastewater usually contains heavy metal ions, residual organic catalysts, reaction byproducts and suspended particulate matter, etc., which are complex in composition and high in pollutant concentration. If not properly treated and directly discharged, it will not only seriously pollute water bodies and soil, but also endanger the ecological environment and human health through the biological chain, so efficient purification treatment of the wastewater has important environmental protection significance and practical demand.

[0003] At present, the treatment of metal catalyst production wastewater mostly adopts a combined process of pretreatment and deep adsorption, but the existing technology has many deficiencies in actual application.

[0004] 1. Poor adsorption efficiency and regeneration effect of activated carbon: activated carbon is commonly used as an adsorption material in deep treatment, but in the existing equipment, the contact between activated carbon and wastewater is mostly static or simple dynamic contact, which has adsorption dead angles, resulting in insufficient adsorption of heavy metal ions and organic residues. More importantly, there are obvious defects in the regeneration treatment of saturated activated carbon. Traditional regeneration mostly uses single hot air or steam treatment, which is not thorough in desorption, and the pollutants attached to the surface of activated carbon during the regeneration process are difficult to effectively remove, resulting in a significant decrease in adsorption efficiency when the activated carbon is reused, which increases the treatment cost.

[0005] 2. The pretreatment, filtration adsorption, regeneration and other links of the existing treatment equipment are mostly independently operated, and the connection between the systems is not smooth, making it difficult to realize continuous treatment.

[0006] Therefore, the present application provides a treatment equipment for metal catalyst production wastewater to solve the problems in the background art. SUMMARY

[0007] The purpose of the present application is to solve the problems in the background art and provide a treatment equipment for metal catalyst production wastewater.

[0008] The technical scheme for solving the above technical problems is as follows: a treatment equipment for metal catalyst production wastewater, comprising a rack and four treatment systems, a core barrel is installed on the rack and a bevel gear is rotatably installed, an upper rotating drum and a lower rotating drum are rotatably installed on the core barrel, the lower rotating drum and the bevel gear are driven by independent motors respectively, a filter station, an adsorption station, an air station and a steam station are sequentially arranged in a clockwise direction on the rack, a set of gear rings is installed on the upper end of the core barrel and the positions corresponding to the filter station, the air station and the steam station, and the central angles of the effective meshing areas of the three gear rings in the clockwise direction increase by 25°.

[0009] The processing system comprises a reciprocating frame, a square shaft driven by a bevel gear, a lead screw driven by a sector gear, a top frame mounted on the upper rotating drum, the square shaft and the lead screw are both rotatably mounted on the top frame, a torsion spring is arranged at the rotating connection between the lead screw and the upper rotating drum, an adjusting seat is driven on the lead screw, a half-cone transmission column driven by the square shaft is rotatably mounted on the adjusting seat, the reciprocating frame is slidingly connected with the top frame, and a group of return springs are arranged on the bottom surface of the reciprocating frame and limited by the top frame, a transmission frame is connected with the reciprocating frame through a group of elastic members, the transmission frame is frictionally driven with the half-cone transmission column, a processing drum is mounted on the upper rotating drum, an activated carbon drum is rotatably mounted on the reciprocating frame, a brush shaft is rotatably mounted on the inner wall of the activated carbon drum, helical brush pieces are mounted on the brush shaft and abut against the activated carbon drum, the activated carbon drum is used for filtering wastewater at a filtering station, removing residual wastewater at a removal station, performing primary regeneration of overheated air at an air station, and performing secondary steam regeneration at a steam station.

[0010] Based on the above technical scheme, the application can be further improved as follows.

[0011] As a preferred technical scheme of the application, a mixed medicine tank is mounted on the top of the rack, a medicine adding hopper is communicated with the mixed medicine tank, a sewage inlet pipe is communicated with the medicine adding hopper, a one-way overflow pipe is communicated with the mixed medicine tank, an overflow port is arranged at the communication position of the one-way overflow pipe and the mixed medicine tank, a filter disc is clamped on the inner wall of the mixed medicine tank and corresponds to the position below the overflow port, a sewage discharge valve is communicated with the bottom of the mixed medicine tank, and a stirring device is arranged in the mixed medicine tank.

[0012] As a preferred technical scheme of the application, a microcontroller is mounted on the mixed medicine tank, a gear cylinder is rotatably mounted on the rack, the bevel gear is fixedly mounted on the gear cylinder, the output shaft ends of the two motors are both drivingly mounted with first toothed belts, one of the first toothed belts is drivingly connected with the gear cylinder, and the other first toothed belt is drivingly connected with the lower rotating drum.

[0013] As the preferred technical scheme of the present application, the upper part of the core barrel is respectively provided with a clean water discharge cavity, a hot air inlet cavity and a steam inlet cavity, the lower part of the core barrel is respectively provided with a waste water inlet cavity, a sewage suction cavity, a hot air discharge cavity and a steam discharge cavity, the positions of the clean water discharge cavity and the waste water inlet cavity correspond to the position of the filtering station, the positions of the hot air inlet cavity and the hot air discharge cavity correspond to the position of the air station, the positions of the steam inlet cavity and the steam discharge cavity correspond to the position of the steam station, the core barrel is provided with three upper valve holes and four lower valve holes, the three upper valve holes are respectively communicated with the clean water discharge cavity, the hot air inlet cavity and the steam inlet cavity, the four lower valve holes are respectively communicated with the waste water inlet cavity, the sewage suction cavity, the hot air discharge cavity and the steam discharge cavity, the top of the processing barrel is communicated with an upper end pipe, the upper end pipe is communicated with the upper rotating barrel at the position corresponding to the upper valve hole, the bottom end of the processing barrel is communicated with a lower end pipe, the lower end pipe is communicated with the lower rotating barrel at the position corresponding to the lower valve hole, the bottom of the medicine mixing tank is communicated with a hot air blower, the hot air blower is communicated with the hot air inlet cavity, the rack is installed with a steam generation module, the steam outlet port of the steam generation module is fixedly communicated with the steam inlet cavity, the other end of the one-way overflow pipe is fixedly communicated with the waste water inlet cavity, the rack is installed with a backflow pump, the water inlet port of the backflow pump is communicated with the sewage suction cavity, and the water outlet port of the backflow pump is communicated with the one-way overflow pipe through a one-way drainage pipe.

[0014] As the preferred technical scheme of the present application, the three upper valve holes and the three lower valve holes are arranged on the inner side of the upper rotating barrel, the axes of the upper valve holes and the lower valve holes are perpendicular to the axis of the core barrel, the bottom of the hot air discharge cavity and the steam discharge cavity is respectively communicated with an exhaust valve, and the clean water discharge cavity is communicated with a clean water discharge pipe.

[0015] As the preferred technical scheme of the present application, the processing system further comprises a first belt shaft and a second belt shaft rotatably connected to the top frame, a first bevel gear is installed on the first belt shaft and the lead screw, the two first bevel gears are orthogonally engaged, a second toothed belt is transmissionally connected between the first belt shaft and the second belt shaft, and a driven gear which is adaptively engaged with the fan gear ring is installed on the second belt shaft.

[0016] As the preferred technical scheme of the present application, the processing system further comprises a reciprocating tooth plate installed on the reciprocating frame and a synchronous shaft rotatably connected to the top frame, a synchronous gear meshing with the reciprocating tooth plate is installed on the synchronous shaft, a tensioning block is slidably installed on the reciprocating frame, a tensioning spring limited by the reciprocating frame is installed on the side surface of the tensioning block, a tensioning wheel is rotatably installed on the tensioning block, a third tooth belt is drivingly connected to the synchronous shaft, a middle shaft is rotatably installed on the reciprocating frame, the middle shaft and the tensioning wheel are both drivingly connected to the third tooth belt, a through shaft is connected to the top of the activated carbon cylinder, the brush shaft is rotatably connected to the through shaft through a bearing, the through shaft and the brush shaft are both installed with a second bevel gear, an intermediate bevel gear is installed on the middle shaft, the two second bevel gears are both drivingly connected to the intermediate bevel gear, the two second bevel gears are respectively arranged on the two sides of the intermediate bevel gear, a first tooth shaft and a second tooth shaft are rotatably installed on the top frame, the first tooth shaft and the second tooth shaft are both installed with a third bevel gear, the two third bevel gears are orthogonal meshing, a fourth tooth belt is drivingly connected between the second tooth shaft and the square shaft, a linkage bevel gear is installed on the first tooth shaft, and the linkage bevel gear is drivingly connected to the bevel gear ring.

[0017] As the preferred technical scheme of the present application, the whole arc of the half-cone transmission column is 180°, the cross section of the half-cone transmission column is isosceles trapezoidal, the ratio of the large end radius to the small end radius of the half-cone transmission column is 4:1, the half-cone transmission column and the transmission frame are both uniformly provided with transmission lines, and the inside of the half-cone transmission column is fixedly provided with a square groove with two open ends and slidably connected to the square shaft, and the cross sections of the square groove and the square shaft are both regular hexagons.

[0018] As the preferred technical scheme of the present application, the elastic member comprises a T-shaped guide rod installed on the transmission frame, the T-shaped guide rod is slidably connected to the reciprocating frame, and a compression spring is sleeved between the upper end of the T-shaped guide rod and the position between the transmission frame and the reciprocating frame.

[0019] As the preferred technical scheme of the present application, the activated carbon cylinder is a hollow cylindrical structure with an open bottom end, and the spiral brush pieces are uniformly provided with vertical liquid-permeable holes.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1. The present application is directed to the problem of multiple adsorption dead angles, insufficient adsorption of heavy metals and organic residues caused by the static or simple dynamic contact of activated carbon and wastewater in the prior art. The low-frequency small-amplitude reciprocating vibration mode of the activated carbon cylinder in the filtering station, the medium-frequency medium-amplitude vibration mode in the air regeneration station, and the high-amplitude vibration mode in the steam regeneration station are designed. The three vibration modes are automatically switched with the conversion of the workstations, and the synchronous cleaning action of the spiral brush piece is matched. It can not only avoid the over disturbance of activated carbon particles by water flow, but also through continuous contact and pore dredging, so that the wastewater and activated carbon layer can fully react, and the adsorption efficiency is higher than that of traditional static adsorption.

[0022] 2. In the regeneration link, the present application breaks through the limitation of single hot air or steam treatment, adopts the step-by-step process of air station primary regeneration and steam station secondary regeneration, and realizes efficient desorption of weakly bound pollutants through medium-amplitude reciprocating motion in the air station with 120-150 DEG C hot air. In the steam station, high-frequency motion with maximum amplitude is used to cooperate with 180-200 DEG C high-temperature steam to deeply clean the stubborn pollutants in the activated carbon pores. At the same time, the spiral brush piece is designed through the liquid hole to completely clean the fine carbon particles and residual pollutants falling off in the regeneration process without hindering the fluid circulation, so that the adsorption efficiency of the activated carbon in repeated use is kept in good condition, and the treatment cost of metal wastewater is significantly reduced.

[0023] 3. The present application realizes continuous processing in the whole process, solves the problem of poor connection in each link, and realizes independent operation in the pretreatment, filtration adsorption, regeneration and other links in the prior art, which leads to interruption of treatment and low efficiency. The present application integrates the filtering, adsorption, air regeneration and steam regeneration processes into a continuous flow system through the clockwise circulation switching design of the four workstations. In the pretreatment stage, the mixing tank realizes the full reaction of the reagent and wastewater through the stirring device, the filter disc intercepts the suspended solids, and the supernatant is accurately delivered to the filtering station through the one-way overflow pipe to reduce the subsequent activated carbon load. The residual wastewater is pumped back to the pretreatment system by the backflow pump to avoid cross contamination and lay a clean foundation for the regeneration process. Each workstation is driven by double motors through independent drive gear belts to ensure the precise synchronization of the upper and lower rotating cylinders and bevel gears, and realizes seamless switching between different workstations in the treatment system.

[0024] 4. The present application designs a linkage structure of fan gear center angle increment and half-cone transmission column friction transmission. In the clockwise direction, the effective meshing area center angles of the three fan gears increase by 25 DEG, which respectively match the small, medium and large reciprocating stroke requirements of the filtering, air and steam stations, ensuring the precise adaptation of the actions and treatment targets of each station. The half-cone transmission column is designed through 180 DEG arc and isosceles trapezoidal cross section, which cooperates with the continuous pressure of the elastic element to realize the stable transmission of the reciprocating frame. The cooperation of the regular hexagonal square shaft and square groove ensures that there is no lag in torque transmission, so that the lifting, rotating and cleaning actions of the activated carbon cylinder and the brush shaft are strictly synchronized, providing reliable protection for continuous processing.

[0025] 5. In this invention, the pretreatment mixing tank provides high-quality inlet water to the filtration station, and the adsorption effect of the filtration station feeds back into the efficiency of the regeneration process. The regenerated activated carbon directly enters the next round of filtration, forming a closed loop. This linkage is not only reflected in the coordination of the hardware structure, but also in the intelligent control of the actions of each component through the microcontroller. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of a treatment device for wastewater from the production of a metal catalyst;

[0027] Figure 2 This is a structural diagram of the frame and gear cylinder;

[0028] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0030] Figure 5 for Figure 3 A magnified schematic diagram of the local structure at point B;

[0031] Figure 6 A schematic diagram of the sector gear ring and the core cylinder;

[0032] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0033] Figure 8 This is a schematic diagram of the sector gear ring.

[0034] Figure 9 This is a schematic diagram of the structure of the first and second gear shafts;

[0035] Figure 10 for Figure 9 A magnified schematic diagram of the local structure at point D;

[0036] Figure 11 This is a schematic diagram of the structure of the first belt shaft and tensioning wheel;

[0037] Figure 12 This is a schematic diagram of the square shaft structure;

[0038] Figure 13 This is a schematic diagram of the core cylinder and the purified water discharge chamber.

[0039] In the drawings, the component list represented by each reference numeral is as follows: 1, rack; 2, core barrel; 3, bevel gear; 4, upper rotating barrel; 5, lower rotating barrel; 6, motor; 7, fan gear; 8, reciprocating frame; 9, square shaft; 10, screw rod; 11, top frame; 12, torsional spring; 13, adjusting seat; 14, half-cone transmission column; 15, return spring; 16, elastic member; 17, transmission frame; 18, processing barrel; 19, activated carbon barrel; 20, brush shaft; 21, spiral brush piece; 22, mixed medicine tank; 23, dosing hopper; 24, one-way overflow pipe; 25, filter disc; 26, stirring device; 27, microcontroller; 28, gear cylinder; 29, clean water discharge cavity; 30, hot air inlet cavity; 31, steam inlet cavity; 32, waste water inlet cavity; 33, sewage suction cavity; 34, hot air discharge cavity; 35, steam discharge cavity; 36, upper valve hole; 37, lower valve hole; 38, upper end pipe; 39, lower end pipe; 40, hot air blower; 41, steam generation module; 42, backflow pump; 43, one-way drain pipe; 44, exhaust valve; 45, first belt shaft; 46, second belt shaft; 47, follow-up gear; 48, reciprocating tooth plate; 49, synchronization shaft; 50, synchronization gear; 51, tensioning block; 52, tensioning spring; 53, tensioning wheel; 54, middle shaft; 55, through shaft; 56, first tooth shaft; 57, second tooth shaft; 58, liquid permeable hole. DETAILED DESCRIPTION

[0040] The principles and characteristics of the present application are described below in conjunction with the drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.

[0041] The present application provides the following preferred embodiments

[0042] As Figures 1-13 shown, a metal catalyst production wastewater treatment equipment includes a rack 1 and four processing systems;

[0043] The four processing systems are evenly distributed circumferentially along the core barrel 2, and each processing system corresponds to a station, and is switched in turn by rotation, and clockwise station switching is realized by synchronous rotation of the upper rotating barrel 4 and the lower rotating barrel 5, and the switching angle is 90°;

[0044] A mixed medicine tank 22 is mounted on the top of the rack 1, the mixed medicine tank 22 is communicated with a dosing hopper 23, the dosing hopper 23 is communicated with a sewage inlet pipe, the mixed medicine tank 22 is communicated with a one-way overflow pipe 24, the communication part of the one-way overflow pipe 24 and the mixed medicine tank 22 is provided with an overflow port, and a filter disc 25 is clamped to the inner wall of the mixed medicine tank 22 and corresponds to the position below the overflow port;

[0045] The communication part of the dosing hopper 23 and the mixed medicine tank 22 is below the filter disc 25;

[0046] The bottom of the mixed medicine tank 22 is communicated with a sewage valve, and the inside of the mixed medicine tank 22 is provided with a stirring device 26;

[0047] The mixing tank 22 is provided with a microcontroller 27;

[0048] The wastewater enters the dosing hopper 23 through the sewage inlet pipe, mixes with the reagent, and then flows into the lower part of the mixing tank 22. The stirring device 26 continuously stirs to make the reagent fully react with the wastewater. The suspended solids generated by the reaction are intercepted by the filter disc 25, and the supernatant passes through the one-way overflow pipe 24 into the subsequent treatment process. The sediment at the bottom of the mixing tank 22 can be periodically discharged through the sewage valve. This scheme solves the problems of uneven mixing of reagent and wastewater, insufficient reaction, and high load caused by suspended solids directly entering the subsequent treatment system in the traditional mixing process. Preliminary solid-liquid separation is achieved through the cooperation of the filter disc 25 and the overflow port, reducing the adsorption pressure of the subsequent activated carbon;

[0049] The stirring device 26 is combined with the one-way overflow structure to ensure continuous feeding and stable reaction, improve the utilization rate of reagent and the pretreatment efficiency, and lay a foundation for subsequent deep treatment;

[0050] The rack 1 is provided with a core barrel 2 and a bevel gear 3, the core barrel 2 is provided with an upper rotating drum 4 and a lower rotating drum 5, and the lower rotating drum 5 and the bevel gear 3 are respectively driven by independent motors 6;

[0051] The rack 1 is provided with a gear cylinder 28, the bevel gear 3 is fixedly installed on the gear cylinder 28, and the output shaft ends of the two motors 6 are both transmissionally installed with first tooth belts, one first tooth belt is in transmission connection with the gear cylinder 28, and the other first tooth belt is in transmission connection with the lower rotating drum 5;

[0052] The two motors 6 are respectively in transmission through the first tooth belts, one motor 6 drives the gear cylinder 28 to rotate, thereby driving the bevel gear 3 to rotate, and the other motor 6 drives the upper rotating drum 4 and the lower rotating drum 5 to rotate, so as to realize the switching of the treatment system between various stations. This scheme solves the problems of poor synchronization of multiple components in the traditional equipment, jamming or misplacement of station switching, and interruption of treatment;

[0053] Through the cooperation of independent driving of the double motors 6 and tooth belt transmission, the precise synchronous motion of the bevel gear 3, the upper rotating drum 4 and the lower rotating drum 5 is realized, so as to ensure the stability and continuity of the switching of the treatment system between various stations;

[0054] The rack 1 is provided with a filter station, an absorption station, an air station and a steam station in sequence in the clockwise direction, and a set of gear rings 7 are installed on the upper end of the core barrel 2 and positions corresponding to the filter station, the air station and the steam station;

[0055] The residence time of each treatment system in each station is preset by the microcontroller 27, which is 30 seconds for the filter station, 10 seconds for the absorption station, 20 seconds for the air station, and 25 seconds for the steam station;

[0056] The central angles corresponding to the effective meshing areas of the three fan toothed rings 7 in clockwise direction increase by 25 degrees;

[0057] Preferably, the central angles corresponding to the effective meshing areas of the three fan toothed rings 7 in clockwise direction are 25 degrees, 50 degrees and 75 degrees respectively;

[0058] The processing system comprises a reciprocating frame 8, a square shaft 9 driven by the bevel gear 3 and a lead screw 10 driven by the fan toothed ring 7, a top frame 11 mounted on the upper rotating cylinder 4;

[0059] The reciprocating frame 8 is in sliding connection with the top frame 11, and a group of return springs 15 are mounted on the bottom surface of the reciprocating frame 8 and are limited by the top frame 11;

[0060] The square shaft 9 and the lead screw 10 are both rotationally mounted on the top frame 11, and a torsion spring 12 is arranged at the rotation connection between the lead screw 10 and the upper rotating cylinder 4;

[0061] The lead screw 10 is driven by an adjusting seat 13, and the adjusting seat 13 is rotationally mounted with a half-cone transmission column 14 driven by the square shaft 9;

[0062] A transmission frame 17 is connected to the reciprocating frame 8 by a group of elastic members 16, and the transmission frame 17 is in friction transmission with the half-cone transmission column 14;

[0063] The whole arc of the half-cone transmission column 14 is 180 degrees, the cross section of the half-cone transmission column 14 is isosceles trapezoidal, the ratio of the large end radius to the small end radius of the half-cone transmission column 14 is 4:1, the half-cone transmission column 14 and the transmission frame 17 are both uniformly provided with transmission lines, the half-cone transmission column 14 is internally fixed with a square groove with open ends and in sliding connection with the square shaft 9, and the cross sections of the square groove and the square shaft 9 are both regular hexagons;

[0064] The elastic member 16 comprises a T-shaped guide rod mounted on the transmission frame 17, the T-shaped guide rod is in sliding connection with the reciprocating frame 8, and a compression spring is sleeved between the upper end of the T-shaped guide rod and the position corresponding to the transmission frame 17 and the reciprocating frame 8;

[0065] The square shaft 9 drives the half-cone transmission column 14 to rotate, the half-cone transmission column 14 forms friction transmission with the transmission frame 17 through the surface transmission lines, drives the transmission frame 17 to move up and down, and then makes the reciprocating frame 8 slide along the top frame 11, the return spring 15 assists the reciprocating frame 8 to reset, and the compression spring in the elastic member 16 always pushes the transmission frame 17 to closely contact with the half-cone transmission column 14 to avoid slipping, which solves the problem that the friction is unstable in the traditional transmission structure, the transmission is easily lagged or slipped due to the gap, and then the action accuracy of the activated carbon cylinder 19 is affected;

[0066] The 180° arc of the semi-conical transmission column 14 and the isosceles trapezoidal cross-section design, in cooperation with the elastic member 16, realize the stable reciprocating movement of the reciprocating frame 8. The cooperation of the regular hexagonal square groove and the square shaft 9 ensures the stability of torque transmission, makes the lifting action of the activated carbon cylinder more accurate, and improves the adaptability to each station.

[0067] The upper rotating cylinder 4 is provided with a treatment cylinder 18, and the reciprocating frame 8 is provided with a rotating activated carbon cylinder 19;

[0068] The activated carbon cylinder 19 is a hollow cylindrical structure with an open bottom;

[0069] The bottom of the activated carbon cylinder 19 is provided with a lip-shaped sealing ring in contact with the treatment cylinder 18;

[0070] The activated carbon cylinder 19 is a metal mesh cylinder, which is filled with activated carbon particles;

[0071] The inner wall of the activated carbon cylinder 19 is provided with a brush shaft 20, and the brush shaft 20 is provided with a spiral brush piece 21 in contact with the activated carbon cylinder 19;

[0072] The spiral brush piece 21 is uniformly provided with vertical liquid-permeable holes 58;

[0073] The treatment system further comprises a first belt shaft 45 and a second belt shaft 46 rotatably connected to the top frame 11. The first belt shaft 45 and the lead screw 10 are each provided with a first bevel gear, and the two first bevel gears are in orthogonal engagement. A second toothed belt is transmissionally connected between the first belt shaft 45 and the second belt shaft 46. The second belt shaft 46 is provided with a driven gear 47 adapted to engage with the fan gear ring 7;

[0074] The treatment system further comprises a reciprocating toothed plate 48 mounted on the reciprocating frame 8 and a synchronous shaft 49 rotatably connected to the top frame 11. The synchronous shaft 49 is provided with a synchronous gear 50 engaging with the reciprocating toothed plate 48. A tensioning block 51 is slidingly mounted on the reciprocating frame 8. The side surface of the tensioning block 51 is provided with a tensioning spring 52 limited by the reciprocating frame 8. The tensioning block 51 is rotatably provided with a tensioning wheel 53;

[0075] The third toothed belt is in driving connection with the synchronous shaft 49, the middle shaft 54 is rotatably installed on the reciprocating frame 8, the middle shaft 54 and the tensioning wheel 53 are in driving connection with the third toothed belt, the top of the active carbon cylinder 19 is connected with the through shaft 55, the brush shaft 20 is in driving connection with the through shaft 55 through a bearing, the second bevel gears are installed on the through shaft 55 and the brush shaft 20, the middle bevel gear is installed on the middle shaft 54, the two second bevel gears are in driving connection with the middle bevel gear, the two second bevel gears are respectively arranged on the two sides of the middle bevel gear, the first tooth shaft 56 and the second tooth shaft 57 are rotatably installed on the top frame 11, the third bevel gears are installed on the first tooth shaft 56 and the second tooth shaft 57, the two third bevel gears are in orthogonal engagement, the fourth toothed belt is in driving connection between the second tooth shaft 57 and the square shaft 9, the linkage bevel gear is installed on the first tooth shaft 56, and the linkage bevel gear is in driving connection with the bevel gear 3;

[0076] The fan gear 7 drives the driven gear 47 to rotate, is transmitted to the first belt shaft 45 through the second belt shaft 46 and the second toothed belt, drives the lead screw 10 to rotate through the first bevel gear, simultaneously, the bevel gear 3 drives the linkage bevel gear, drives the square shaft 9 to rotate through the first tooth shaft 56, the third bevel gear and the second tooth shaft 57, the square shaft 9 rotates the middle shaft 54 through a transmission structure, further drives the active carbon cylinder 19 to rotate and the brush shaft 20 to rotate, and the spiral brush piece 21 sweeps the inner wall of the active carbon cylinder 19, the scheme solves the problem that the rotating of the active carbon cylinder 19 and the sweeping of the brush shaft 20 are asynchronous in the traditional processing system, causes the remaining of adsorption dead angle and the incomplete removal of pollutants during regeneration;

[0077] Through the cooperative transmission of the first belt shaft 45, the second belt shaft 46, the bevel gear and the toothed belt, the precise synchronization of the rotating adsorption of the active carbon cylinder 19 and the spiral sweeping of the brush shaft 20 is realized, the liquid-permeable holes 58 on the spiral brush piece 21 do not hinder the fluid circulation and can efficiently remove the pollutants attached to the surface of the active carbon, and the adsorption efficiency and the regeneration effect are significantly improved;

[0078] A set of gear rings 7 are installed on the upper end of the core cylinder 2 and positions corresponding to the filtering station, the air station and the steam station;

[0079] The central angles corresponding to the effective engagement areas of the three fan gear rings 7 in the clockwise direction increase by 25°;

[0080] Through the difference of the central angles corresponding to the effective engagement areas of the three sets of fan gear rings 7, the reciprocating frame 8 obtains different reciprocating strokes in the filtering station, the air station and the steam station;

[0081] The reciprocating stroke amplitude of the reciprocating frame 8 in the filtering station is smaller, the reciprocating stroke amplitude of the reciprocating frame 8 in the air station is larger, and the reciprocating stroke amplitude of the reciprocating frame 8 in the steam station is largest;

[0082] In the filtering station, the reciprocating frame 8 moves slightly, and the activated carbon cylinder 19 moves slightly in the treatment cylinder 18. This design can reduce the disturbance of activated carbon particles, avoid the activated carbon particles that do not fully contact the pollutants being carried away by the water flow during the adsorption process, ensure the stable contact time of wastewater and activated carbon layer, and improve the adsorption efficiency of heavy metal ions, organic catalyst residues and target pollutants. In addition, the small amplitude motion cooperates with the synchronous cleaning of the spiral brush piece 21, which can remove the suspended solids preliminarily attached to the surface of the activated carbon without destroying the adsorption balance, maintain the porosity, and reduce the adsorption dead angle.

[0083] In the air station, the activated carbon cylinder 19 moves with an increased amplitude, and hot air with a temperature of 120-150°C is introduced to form a synergistic effect of vibration and airflow.

[0084] On the one hand, the activated carbon particles collide with each other during the reciprocating motion, break the weakly bound organic matter adsorbed on the surface, and facilitate the desorption of the organic matter by hot air.

[0085] On the other hand, the moderate amplitude of the lifting can make the hot air penetrate the activated carbon layer more uniformly, avoid the ablation of activated carbon caused by local high temperature, and the spiral brush piece 21 can clean the fine carbon particles generated by thermal expansion to ensure the smooth flow path of hot air and improve the desorption efficiency of the first regeneration.

[0086] In the steam station, the activated carbon cylinder 19 moves with a large amplitude in the treatment cylinder 18, and high-temperature steam is introduced to form a strong convection environment. The temperature of the high-temperature steam is preferably 180-200°C.

[0087] The large amplitude motion can make the activated carbon particles fully dispersed, and the steam can deeply penetrate into the pores and fully contact with the residual stubborn organic matter and heavy metal chelates to realize deep desorption through the dual action of pyrolysis and dissolution.

[0088] At the same time, the strong reciprocating motion cooperates with the strong cleaning of the spiral brush piece 21 to completely remove the liquid pollutants formed on the surface of the activated carbon due to the condensation of steam, avoid secondary adsorption, lay a foundation for the recovery of the adsorption performance in the subsequent filtering station, and ultimately maximize the regeneration efficiency of the activated carbon.

[0089] In summary, the stroke difference design meets the core needs of each station, gradually strengthens the regeneration effect while ensuring the filtering efficiency, realizes the synergistic optimization of the whole process of adsorption and regeneration, and significantly improves the continuous operation stability of the equipment and the recycling efficiency of the activated carbon.

[0090] The activated carbon cylinder 19 filters wastewater in the filtering station, removes residual wastewater in the adsorption station, regenerates once by hot air in the air station, and regenerates twice by steam in the steam station.

[0091] The upper part of the core barrel 2 is respectively provided with a clean water discharge cavity 29, a hot air inlet cavity 30 and a steam inlet cavity 31;

[0092] The lower part of the core barrel 2 is respectively provided with a waste water inlet cavity 32, a sewage suction cavity 33, a hot air discharge cavity 34 and a steam discharge cavity 35;

[0093] The positions of the clean water discharge cavity 29 and the waste water inlet cavity 32 correspond to the positions of the filtering stations;

[0094] The positions of the hot air inlet cavity 30 and the hot air discharge cavity 34 correspond to the positions of the air stations;

[0095] The positions of the steam inlet cavity 31 and the steam discharge cavity 35 correspond to the positions of the steam stations;

[0096] The core barrel 2 is provided with three upper valve holes 36 and four lower valve holes 37, the three upper valve holes 36 respectively communicate with the clean water discharge cavity 29, the hot air inlet cavity 30 and the steam inlet cavity 31;

[0097] The four lower valve holes 37 respectively communicate with the waste water inlet cavity 32, the sewage suction cavity 33, the hot air discharge cavity 34 and the steam discharge cavity 35;

[0098] The three upper valve holes 36 are all arranged on the inner side of the upper rotating barrel 4, the three lower valve holes 37 are all arranged on the inner side of the lower rotating barrel 5, and the axes of the upper valve holes 36 and the lower valve holes 37 are perpendicular to the axis of the core barrel 2;

[0099] The bottom of the hot air discharge cavity 34 and the bottom of the steam discharge cavity 35 are respectively communicated with an exhaust valve 44;

[0100] The clean water discharge cavity 29 is communicated with a clean water discharge pipe;

[0101] The top of the processing barrel 18 is communicated with an upper end pipe 38, the upper end pipe 38 is communicated with the upper rotating barrel 4 at the position corresponding to the upper valve hole 36, the bottom of the processing barrel 18 is communicated with a lower end pipe 39, the lower end pipe 39 is communicated with the lower rotating barrel 5 at the position corresponding to the lower valve hole 37, the bottom of the medicine mixing tank 22 is communicated with a hot air blower 40, the hot air blower 40 is communicated with the hot air inlet cavity 30, a steam generation module 41 is installed on the rack 1, the steam generation module 41 is fixedly communicated with the steam inlet cavity 31 at the gas outlet port, the other end of the one-way overflow pipe 24 is fixedly communicated with the waste water inlet cavity 32, a backflow pump 42 is installed on the rack 1, the water inlet port of the backflow pump 42 is communicated with the sewage suction cavity 33, and the water outlet port of the backflow pump 42 is communicated with the one-way overflow pipe 24 through a one-way drainage pipe 43.

[0102] In the filtering position, the wastewater from the wastewater inlet chamber 32 enters the processing cylinder 18 through the lower valve hole 37, and after being adsorbed by the activated carbon, the clean water enters the clean water discharge chamber 29 through the upper end pipe 38 and the upper valve hole 36 and is discharged; in the air position, the hot air from the hot air inlet chamber 30 enters the processing cylinder 18 through the upper valve hole 36 to regenerate the activated carbon, and the exhaust gas enters the hot air discharge chamber 34 through the lower valve hole 37 and is discharged; the steam position is the same as above;

[0103] In the suction position, the residual wastewater in the activated carbon cylinder 19 and the processing cylinder 18 is sucked back into the one-way overflow pipe 24, and the residual wastewater in the activated carbon cylinder 19 and the processing cylinder 18 is fully emptied, thereby facilitating the first regeneration treatment of hot air and the second regeneration treatment of high-temperature steam.

[0104] The working process and system linkage process of the device are as follows: first, the wastewater enters the dosing hopper through the sewage inlet pipe, mixes with the reagent, flows into the lower part of the reagent mixing tank 22, and the stirring device 26 in the reagent mixing tank 22 fully reacts the reagent with the wastewater. The suspended solids generated by the reaction are intercepted by the filter disc 25, and the supernatant passes through the overflow port and enters the wastewater inlet chamber 32 of the core cylinder 2 through the one-way overflow pipe 24, completing the pretreatment.

[0105] Subsequently, the two motors 6 are driven by the first toothed belt respectively, one drives the gear cylinder 28 and the bevel gear 3 to rotate, and the other drives the upper rotating cylinder 4 and the lower rotating cylinder 5 to rotate, so that the four processing systems are switched clockwise among the filtering, suction, air regeneration, and steam positions, and the microcontroller 27 coordinates the actions of each component.

[0106] In the filtering position, the wastewater from the wastewater inlet chamber 32 enters the processing cylinder 18 through the lower valve hole 37, and after being adsorbed by the activated carbon, the clean water enters the clean water discharge chamber 29 through the upper end pipe 38 and the upper valve hole 36 and is discharged; in the air position, the hot air from the hot air inlet chamber 30 enters the processing cylinder 18 through the upper valve hole 36 to regenerate the activated carbon, and the exhaust gas enters the hot air discharge chamber 34 through the lower valve hole 37 and is discharged; the steam position is the same as above;

[0107] In the suction position, the residual wastewater in the activated carbon cylinder 19 and the processing cylinder 18 is sucked back into the one-way overflow pipe 24, and the residual wastewater in the activated carbon cylinder 19 and the processing cylinder 18 is fully emptied, thereby facilitating the first regeneration treatment of hot air and the second regeneration treatment of high-temperature steam.

[0108] In the air position, the hot air from the hot air inlet chamber 30 enters the processing cylinder 18 through the upper valve hole 36 to regenerate the activated carbon, and the exhaust gas enters the hot air discharge chamber 34 through the lower valve hole 37 and is discharged; the steam position is the same as above;

[0109] In the steam station, the high-temperature steam generated by the steam generation module 41 enters the processing cylinder 18 through the steam inlet cavity 31 and the upper valve hole 36. The reciprocating frame 8 lifts and lowers at the maximum stroke to make the activated carbon cylinder 19 move at a high frequency. The steam deeply desorbs the residual pollutants. The exhaust gas enters the steam exhaust cavity 35 from the lower valve hole 37 and is discharged by the exhaust valve 44. The three fan gear rings 7 have an effective meshing area with an incremental central angle of 25°, which is suitable for the stroke requirements of the reciprocating frame 8 in each station.

[0110] The pretreatment system of the mixed medicine tank 22 cooperates with the filtration station. The mixed medicine tank 22 realizes sufficient reaction of the medicine and preliminary solid-liquid separation through stirring and the filter disc 25, reduces the blockage of the pores of the activated carbon cylinder 19 by suspended solids, and provides high-quality water for the filtration station. The two are closely related, and the pretreatment effect directly affects the activated carbon adsorption efficiency.

[0111] The overall cooperative system solves the problems of poor connection between wastewater pretreatment and deep treatment, incomplete activated carbon regeneration, poor cooperation with the treatment process, and difficulty in continuous and stable operation in the prior art, and realizes continuous and efficient wastewater treatment and activated carbon recycling.

[0112] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A treatment plant for metal catalyst production wastewater, comprising a frame (1) and four treatment systems, characterized in that: The rack (1) is provided with a core cylinder (2) and a bevel gear (3), the core cylinder (2) is provided with an upper rotating cylinder (4) and a lower rotating cylinder (5), the lower rotating cylinder (5) and the bevel gear (3) are driven by independent motors (6), the rack (1) is sequentially provided with a filtering station, a suction station, an air station and a steam station in a clockwise direction, the upper end of the core cylinder (2) and positions corresponding to the filtering station, the air station and the steam station are provided with a set of gear rings (7), and the central angles of effective meshing areas of the three gear rings (7) in the clockwise direction are increased by 25°. The processing system comprises a reciprocating frame (8), a square shaft (9) driven by the bevel gear (3) and a lead screw (10) driven by the gear ring (7), a top frame (11) mounted on the upper rotating cylinder (4), the square shaft (9) and the lead screw (10) are rotatably mounted on the top frame (11), the lead screw (10) is provided with a torsional spring (12) at a rotating connection position with the upper rotating cylinder (4), the lead screw (10) is driven by an adjusting seat (13), the adjusting seat (13) is rotatably provided with a half-cone transmission column (14) driven by the square shaft (9), the bottom surface of the reciprocating frame (8) is provided with a group of return springs (15) limited by the top frame (11), the reciprocating frame (8) is connected with a transmission frame (17) through a group of elastic members (16), the transmission frame (17) is frictionally driven by the half-cone transmission column (14), the upper rotating cylinder (4) is provided with a processing cylinder (18), the reciprocating frame (8) is rotatably provided with an activated carbon cylinder (19), the inner wall of the activated carbon cylinder (19) is rotatably provided with a brush shaft (20), the brush shaft (20) is provided with a spiral brush piece (21), the activated carbon cylinder (19) filters wastewater at the filtering station, removes residual wastewater at the suction station, regenerates hot air at the air station and regenerates steam at the steam station.

2. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The top of the rack (1) is provided with a mixed medicine tank (22), the mixed medicine tank (22) is communicated with a medicine adding hopper (23), the medicine adding hopper (23) is communicated with a sewage inlet pipe, the mixed medicine tank (22) is communicated with a one-way overflow pipe (24), the one-way overflow pipe (24) is provided with an overflow port at a communication position with the mixed medicine tank (22), the inner wall of the mixed medicine tank (22) is clamped with a filter disc (25) at a position below the overflow port, the bottom of the mixed medicine tank (22) is communicated with a sewage discharge valve, and the inside of the mixed medicine tank (22) is provided with a stirring device (26).

3. The metal catalyst production wastewater treatment apparatus according to claim 2, characterized by: The mixed medicine tank (22) is provided with a microcontroller (27), the rack (1) is rotatably provided with a gear cylinder (28), the bevel gear (3) is fixedly mounted on the gear cylinder (28), the output shaft ends of the two motors (6) are drivingly provided with first toothed belts, one of the first toothed belts is drivingly connected with the gear cylinder (28), and the other first toothed belt is drivingly connected with the lower rotating cylinder (5).

4. The metal catalyst production wastewater treatment apparatus according to claim 3, characterized by: The upper part of the core barrel (2) is respectively provided with a clean water discharge cavity (29), a hot air inlet cavity (30) and a steam inlet cavity (31), the lower part of the core barrel (2) is respectively provided with a waste water inlet cavity (32), a sewage suction cavity (33), a hot air discharge cavity (34) and a steam discharge cavity (35), the positions of the clean water discharge cavity (29) and the waste water inlet cavity (32) correspond to the positions of the filtering stations, the positions of the hot air inlet cavity (30) and the hot air discharge cavity (34) correspond to the positions of the air stations, the positions of the steam inlet cavity (31) and the steam discharge cavity (35) correspond to the positions of the steam stations, three upper valve holes (36) and four lower valve holes (37) are formed in the core barrel (2), the three upper valve holes (36) are respectively communicated with the clean water discharge cavity (29), the hot air inlet cavity (30) and the steam inlet cavity (31), the four lower valve holes (37) are respectively communicated with the waste water inlet cavity (32), the sewage suction cavity (33), the hot air discharge cavity (34) and the steam discharge cavity (35), the top of the processing barrel (18) is communicated with an upper end pipe (38), the upper end pipe (38) is communicated with the upper rotating barrel (4) at the position corresponding to the upper valve hole (36), the bottom of the processing barrel (18) is communicated with a lower end pipe (39), the lower end pipe (39) is communicated with the lower rotating barrel (5) at the position corresponding to the lower valve hole (37), the bottom of the medicine mixing tank (22) is communicated with a hot air blower (40), the hot air blower (40) is communicated with the hot air inlet cavity (30), a steam generating module (41) is installed on the rack (1), the steam outlet port of the steam generating module (41) is fixedly communicated with the steam inlet cavity (31), the other end of the one-way overflow pipe (24) is fixedly communicated with the waste water inlet cavity (32), a backflow pump (42) is installed on the rack (1), the water inlet port of the backflow pump (42) is communicated with the sewage suction cavity (33), the water outlet port of the backflow pump (42) is communicated with the one-way overflow pipe (24) through a one-way drainage pipe (43).

5. The metal catalyst production wastewater treatment apparatus according to claim 4, characterized by: The three upper valve holes (36) and the three lower valve holes (37) are arranged on the inner side of the upper rotating barrel (4), the axes of the upper valve holes (36) and the lower valve holes (37) are perpendicular to the axis of the core barrel (2), the bottoms of the hot air discharge cavity (34) and the steam discharge cavity (35) are communicated with exhaust valves (44), the clean water discharge pipe is communicated with the clean water discharge cavity (29).

6. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The processing system further comprises a first belt shaft (45) and a second belt shaft (46) which are rotationally connected to the top frame (11), a first bevel gear is installed on the first belt shaft (45) and the lead screw (10), the two first bevel gears are orthogonally engaged, a second toothed belt is transmissionally connected between the first belt shaft (45) and the second belt shaft (46), a follow-up gear (47) which is adapted to engage with the sector gear (7) is installed on the second belt shaft (46).

7. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The processing system further comprises a reciprocating toothed plate (48) mounted on the reciprocating frame (8) and a synchronous shaft (49) rotatably connected to the top frame (11), a synchronous gear (50) engaged with the reciprocating toothed plate (48) is mounted on the synchronous shaft (49), a tensioning block (51) is slidably mounted on the reciprocating frame (8), a tensioning spring (52) limited by the reciprocating frame (8) is mounted on the side of the tensioning block (51), a tensioning wheel (53) is rotatably mounted on the tensioning block (51), a third toothed belt is drivingly connected to the synchronous shaft (49), a middle shaft (54) is rotatably mounted on the reciprocating frame (8), the middle shaft (54) and the tensioning wheel (53) are drivingly connected with the third toothed belt, a through shaft (55) is connected to the top of the activated carbon cylinder (19), the brush shaft (20) is rotatably connected with the through shaft (55) through a bearing, the through shaft (55) and the brush shaft (20) are both mounted with second bevel gears, an intermediate bevel gear is mounted on the middle shaft (54), the two second bevel gears are drivingly connected with the intermediate bevel gear, the two second bevel gears are respectively arranged on the two sides of the intermediate bevel gear, a first toothed shaft (56) and a second toothed shaft (57) are respectively rotatably mounted on the top frame (11), the first toothed shaft (56) and the second toothed shaft (57) are both mounted with third bevel gears, the two third bevel gears are orthogonally engaged, the fourth toothed belt is drivingly connected between the second toothed shaft (57) and the square shaft (9), the first toothed shaft (56) is mounted with a linkage bevel gear, and the linkage bevel gear is drivingly connected with the bevel gear (3).

8. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The whole arc of the half-cone transmission column (14) is 180°, the cross section of the half-cone transmission column (14) is isosceles trapezoidal, the ratio of the large end radius to the small end radius of the half-cone transmission column (14) is 4:1, the half-cone transmission column (14) and the transmission frame (17) are both provided with transmission lines, and the half-cone transmission column (14) is internally and fixedly provided with a square groove with two open ends and in sliding connection with the square shaft (9).

9. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The elastic member (16) comprises a T-shaped guide rod mounted on the transmission frame (17), the T-shaped guide rod is in sliding connection with the reciprocating frame (8), and a compression spring is sleeved between the upper end of the T-shaped guide rod and the positions between the transmission frame (17) and the reciprocating frame (8).

10. The metal catalyst production wastewater treatment apparatus according to claim 1, characterized by: The activated carbon cylinder (19) has a hollow cylindrical structure with an open bottom, and the spiral brush pieces (21) are uniformly provided with vertical liquid-permeable holes (58).

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