Detachable reactor based on biochar

Abstract

The detachable reactor comprises a water supply pipe, a communicating pipe and a plurality of barrel sets, each barrel set is formed by splicing a top cover, an upper barrel, an upper grating net, a main barrel, a lower grating net, a lower barrel and a bottom cover, and the bottom cover is connected with a water inlet pipe, a water drainage pipe and a series connection pipe through a first reversing valve. The top cover is provided with a water outlet pipe with a valve and flushing pipes, the water supply pipe is provided with a water supply pump and a box body, the box body is provided with a sewage pipe and a dosing mechanism, the communicating pipe is communicated with the series connection pipes and the flushing pipes and provided with a second reversing valve, inner cavities of the upper cylinder and the lower cylinder are filled with filter materials, and an inner cavity of the main cylinder is filled with catalytic filler. Sewage is filtered and catalytically decomposed by using the filter material and the catalytic filler in the cylinder group, the cylinder group is convenient to disassemble for cleaning and replacement, and series connection, parallel connection and backwashing work of the plurality of cylinder groups can be realized through cooperation of each pipeline and each valve, so that the sewage treatment effect is ensured, and the sewage treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a detachable reactor based on biochar. BACKGROUND

[0002] With the rapid development of industrialization and urbanization, new pollutant problems have gradually become a global environmental challenge. The difficulty of new pollutant governance lies in its strong concealment, environmental persistence and biological accumulation, as well as wide sources and complex governance. In the field of water treatment, removing various new pollutants in water is an important and challenging task. Traditional water treatment methods, such as sedimentation, filtration and biodegradation, often have difficulty in effectively removing these pollutants. Therefore, it is particularly important to develop new and efficient water treatment materials.

[0003] At present, directly synthesized metal catalysts or carbon-containing catalysts such as graphene are widely studied due to their excellent catalytic performance, but these materials are usually high in cost, limiting their large-scale application. Biochar materials have attracted attention due to their low cost and sustainability. Biochar is prepared by pyrolysis of biomass materials, with high specific surface area and porous structure, making it have potential application value in water treatment. However, the activation efficiency and catalytic performance of biochar materials are usually limited by their raw materials and preparation methods. With the increase of coffee consumption, coffee grounds, as an agricultural byproduct, its utilization and treatment have become an environmental problem. Coffee grounds contain rich carbon elements and porous structure, which is an ideal raw material for preparing biochar. Using coffee grounds to prepare biochar materials not only can reduce the cost of materials, but also can realize the recycling of resources and reduce environmental pollution. The above biochar materials are usually made into reactors for sewage purification treatment, but the existing reactor shape structure is fixed, it is difficult to disassemble and replace according to the needs, the installation and replacement process is more cumbersome, it is difficult to assemble according to the use demand, the use flexibility is poor, and the service life is low. SUMMARY

[0004] The utility model aims at the deficiency in the above technology, proposes a detachable reactor based on biochar, aiming at solving the above problems.

[0005] The utility model provides a detachable reactor based on biochar, including water supply pipe, communication pipe and a plurality of cylinder groups, the cylinder group is by top cover, upper cylinder, upper grid, main cylinder, lower grid, lower cylinder and bottom cover detachable splicing composition in proper order, every bottom cover all is provided with the water inlet pipe, drain pipe and series connection pipe with the lower cylinder intercommunication and is provided with first reversing valve at four intercommunication, every top cover all is provided with the water outlet pipe and flush pipe with upper cylinder intercommunication, water outlet pipe and flush pipe all are provided with valve, water supply pump is provided on water supply pipe, water supply pipe is connected with a plurality of water inlet pipe respectively, the tank is provided with sewage pipe and dosing mechanism on the communication of water supply pipe, communication pipe is connected with a plurality of flush pipe and a plurality of series connection pipe respectively, the second reversing valve is provided at the intercommunication of communication pipe, flush pipe and series connection pipe, the inner chamber of upper cylinder and lower cylinder all is filled with filter material, and the inner chamber of main cylinder is filled with catalytic filler.

[0006] Preferably, the tank is provided with a mixing barrel, a driving mechanism and a stirring mechanism, the dosing mechanism and the sewage pipe are arranged on the mixing barrel, the sewage pump is arranged on the sewage pipe, the dosing mechanism is used for adding an oxidizing agent to the sewage pipe, the stirring mechanism is used for stirring the material in the mixing barrel, the driving mechanism is in driving connection with the stirring mechanism and the dosing mechanism respectively and drives the two mechanisms to work, and the mixing barrel is provided with a discharge pipe at the bottom, and the electromagnetic valve is arranged at the discharge pipe.

[0007] Preferably, the driving mechanism comprises a servo motor and a driving rod, the driving rod is rotatably installed on the tank, the servo motor is in driving connection with the driving rod and drives the driving rod to rotate, and the driving rod is in driving connection with the stirring mechanism and the dosing mechanism respectively and drives the two mechanisms to work.

[0008] Preferably, the dosing mechanism comprises a dosing cylinder, a piston rod and a piston disc, the dosing cylinder is arranged on the tank, the dosing cylinder is provided with a medicine supply pipe and a dosing pipe at the bottom, the medicine supply pipe is provided with a medicine storage barrel at one end, the dosing pipe is in communication with the mixing barrel, one-way valves are arranged on the medicine supply pipe and the dosing pipe, the piston rod is connected with the piston disc, the piston disc is movably installed on the dosing cylinder and divides the dosing cylinder into two chambers, the piston rod is provided with a transmission mechanism for driving the piston rod to reciprocate, and the driving rod is in driving connection with the transmission mechanism.

[0009] Preferably, the transmission mechanism comprises an adjusting frame, a sliding block and a connecting rod, the adjusting frame is connected with the driving rod, the sliding block is movably arranged on the adjusting frame, an adjusting assembly for adjusting the position of the sliding block is arranged on the adjusting frame, one end of the connecting rod is hingedly connected with the sliding block, and the other end of the connecting rod is hingedly connected with the piston rod.

[0010] Preferably, the adjusting assembly comprises a driving motor and a screw rod, the screw rod is rotatably arranged on the adjusting frame, the driving motor is in transmission connection with the screw rod and drives the screw rod to rotate, and a screw hole matched with the screw rod is arranged on the sliding block.

[0011] Preferably, the stirring mechanism comprises a first stirring rod, a transmission bevel gear and a driving bevel gear, the first stirring rod is rotatably arranged on the mixing barrel, the transmission bevel gear is coaxially arranged on the first stirring rod, and the driving bevel gear is coaxially arranged on the driving rod and is in meshing connection with the transmission bevel gear.

[0012] Preferably, a second stirring rod is coaxially arranged on the first stirring rod and located in the inner cavity of the box body.

[0013] Preferably, the filter material filled in the inner cavities of the upper cylinder body and the lower cylinder body is quartz sand, and the catalytic filter material filled in the inner cavity of the main cylinder body is made of coffee residue biochar and quartz sand.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. sewage and oxidant for decomposing pollutants are respectively added into the box body through the sewage pipe and the dosing mechanism, namely, the oxidant is mixed into the sewage, the sewage is transported through the water supply pump and the water supply pipe, the cavities of the upper cylinder body, the main cylinder body and the lower cylinder body are separated through the upper grid net and the lower grid net, the filter material is filled in the inner cavities of the upper and lower cylinder bodies, and the catalytic filter material is filled in the inner cavity of the main cylinder body, the sewage flows from bottom to top in the cylinder body group, and the filter material and the catalytic filter material promote the oxidation and decomposition reaction process of the oxidant, so that the sewage is purified.

[0016] 2. According to the special pipeline and valve structure design and the detachable structure of the cylinder body group, one cylinder body group can be driven to stop working according to the need, and the cylinder body group can be disassembled and replaced without affecting the purification work of other cylinder body groups.

[0017] 3. According to the special pipeline and valve structure design, the series connection, parallel connection and backwashing work of the multiple cylinder body groups can be realized through the cooperation of the pipelines and valves, so that the sewage treatment effect is ensured and the sewage treatment efficiency is improved.

[0018] 4. The coffee residue biochar is prepared by using coffee residue as raw material, realizes the recycling of resources, utilizes the high specific surface area and rich pore structure, can effectively activate the oxidant, promotes the oxidative decomposition, enhances the sewage purification capacity, and the preparation process is simple, easy to scale production, can be easily integrated into the existing water treatment system, and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only preferred embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The structure schematic view of the plurality of cylinder groups in an embodiment of the present application is shown.

[0021] Figure 2 The structure schematic view of a single cylinder group in an embodiment of the present application is shown.

[0022] Figure 3 The internal structure schematic view of the cylinder group in an embodiment of the present application is shown.

[0023] Figure 4 The internal structure schematic view of the box body in an embodiment of the present application is shown.

[0024] Figure 5 The structure schematic view of the transmission mechanism and the adjusting assembly in an embodiment of the present application is shown.

[0025] In the figure, 1-cylinder group; 11-top cover; 111-water outlet pipe; 112-flushing pipe; 12-upper cylinder; 13-upper grid net; 14-main cylinder; 15-lower grid net; 16-lower cylinder; 17-bottom cover; 171-water inlet pipe; 172-drain pipe; 173-serial pipe; 174-first reversing valve; 2-communication pipe; 21-second reversing valve; 3-water supply pipe; 31-water supply pump; 4-box body; 41-sewage pipe; 411-sewage pump; 42-mixing barrel; 421-discharging pipe; 422-solenoid valve; 5-dosing mechanism; 51-dosing cylinder; 511-dosing pipe; 512-dosing pipe; 513-dosing barrel; 514-one-way valve; 52-piston rod; 53-piston disc; 6-driving mechanism; 61-servo motor; 62-driving rod; 7-stirring mechanism; 71-first stirring rod; 711-second stirring rod; 72-driving bevel gear; 73-driven bevel gear; 8-transmission mechanism; 81-adjusting frame; 82-sliding block; 83-linkage; 9-adjusting assembly; 91-driving motor; 92-screw rod. DETAILED DESCRIPTION

[0026] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0027] Example 1:

[0028] Referring to Figures 1 to 5 The utility model provides a kind of detachable reactor based on biochar

[0029] Through sewage pipe 41 and dosing mechanism 5 are added to box 4 sewage and oxidant for decomposing pollutant respectively, i.e. mixing oxidant in sewage, and the sewage is transported by water supply pump 31 and water supply pipe 3, upper grid net 13 and lower grid net 15 are used to separate the cavities of upper cylinder 12, main cylinder 14 and lower cylinder 16, filter material is filled in the inner cavities of upper and lower two cylinders, and catalytic filler is filled in the inner cavity of main cylinder 14, sewage enters the inside of cylinder group 1 via inlet pipe 171, and flows from bottom to top, and the filtration of filter material and the catalytic filler promote the oxidation and decomposition reaction process of oxidant, to realize the purification treatment of sewage.

[0030] Using this kind of special pipeline and valve structure design, the series connection, parallel connection and backwashing work of multiple cylinder groups 1 can be realized by cooperation of each pipeline and valve to ensure the sewage treatment effect and improve the sewage treatment efficiency, and the corresponding operation mode of specific working mode is as follows:

[0031] 1. when multiple cylinder groups 1 are needed to be connected in parallel to carry out sewage treatment work respectively, to improve the sewage treatment efficiency:

[0032] The first reversing valve 174 at corresponding cylinder group 1 is operated, to drive lower cylinder 16 to communicate with inlet pipe 171, open the valve at outlet pipe 111 and close the valve at flushing pipe 112, sewage flows through water supply pipe 3, cylinder group 1 and outlet pipe 111, to realize that multiple cylinder groups 1 are connected in parallel to carry out sewage purification work synchronously, to improve the sewage treatment efficiency.

[0033] 2. when multiple cylinder groups 1 are needed to be connected in series to carry out sewage treatment work, to improve the sewage treatment effect:

[0034] The first reversing valve 174 and the valve at the corresponding cylinder group 1 are operated to connect the lower cylinder 16 of the first cylinder group 1 with the water inlet pipe 171 and the lower cylinders 16 of the other cylinder groups 1 with the series pipe 173, then the valve of the water outlet pipe 111 of the last cylinder group 1 is opened and the valve of the flushing pipe 112 of the other cylinder groups 1 is opened, the second reversing valve 21 at the corresponding communication pipe 2 is operated to drive the communication pipe 2 to communicate with the series pipe 173, and the sewage can flow through the multiple cylinder groups 1 and be discharged through the water outlet pipe 111 of the last cylinder group 1, so that the sewage purification work of the multiple cylinder groups 1 is carried out in series, the sewage is filtered and catalyzed for multiple times, and the sewage treatment effect is improved.

[0035] 3. When the backwashing work of a certain cylinder group 1 is needed:

[0036] The reversing valve and the valve at the corresponding cylinder group 1 are operated to connect the lower cylinder 16 of a certain cylinder group 1 with the water inlet pipe 171 and open the valve at the flushing pipe 112 thereof, the lower cylinder 16 of the cylinder group to be cleaned is connected with the drain pipe 172 and the valve at the flushing pipe 112 thereof is opened, and the second reversing valve 21 at the corresponding communication pipe 2 of the two cylinders is operated to drive the communication pipe 2 to communicate with the flushing pipe 112, so that the purified sewage can be driven to flow in the cylinder group to be cleaned in the reverse direction from top to bottom, which is beneficial to remove the dirt on the surface of the filter material and the catalytic filler and improve the service life thereof, and the backwashing can be carried out without affecting the purification work of the other cylinder groups 1 by using the special pipeline and valve structure design.

[0037] By using the special pipeline and valve structure design, the lower cylinder 16 of a certain cylinder group 1 can be connected with the drain pipe 172 and the valves at the water outlet pipe 111 and the flushing pipe 112 thereof are closed, so that the cylinder group 1 can be disassembled and replaced without affecting the purification work of the other cylinder groups 1.

[0038] The top cover 11, the upper cylinder 12, the main cylinder 14, the lower cylinder 16, the bottom cover 17 and the grid net are detachably connected by means of bolts and nuts, and the specific structure is that the two ends of the upper cylinder 12, the two ends of the main cylinder 14 and the two ends of the lower cylinder 16 are provided with connecting rings, the connecting rings, the top cover 11, the bottom cover 17, the upper grid net 13 and the lower grid net 15 are provided with a plurality of mounting holes for bolts to pass through, and the top cover 11, the upper cylinder 12, the upper grid net 13, the main cylinder 14, the lower grid net 15, the lower cylinder 16 and the bottom cover 17 can be assembled in the order of the top cover 11, the upper cylinder 12, the upper grid net 13, the main cylinder 14, the lower grid net 15, the lower cylinder 16 and the bottom cover 17 by using bolts to pass through the mounting holes and being fastened by nuts, so that the cylinder group 1 can be disassembled and cleaned and the filter material can be replaced as needed. The medicament added by the dosing mechanism 5 is an oxidizing agent containing persulfate. The communication pipe 2 is provided with a plurality of branch pipes in communication, and the second reversing valve 21 is arranged on the branch pipes, and the branch pipes are communicated with the series pipe 173 and the flushing pipe 112 through the second reversing valve 21.

[0039] Example 2:

[0040] Reference Figures 1 to 5 In conjunction with the technical solution of Embodiment 1, in this embodiment, the housing 4 is provided with a mixing tank 42, a driving mechanism 6 and a stirring mechanism 7. The dosing mechanism 5 and the sewage pipe 41 are both provided on the mixing tank 42. The sewage pipe 41 is provided with a sewage pump 411. The dosing mechanism 5 is used to add oxidant to the sewage pipe 41. The stirring mechanism 7 is used to stir the material in the mixing tank 42. The driving mechanism 6 is connected to the stirring mechanism 7 and the dosing mechanism 5 respectively and drives the two mechanisms to work. The bottom of the mixing tank 42 is provided with a discharge pipe 421 and a solenoid valve 422 is provided at the discharge pipe 421.

[0041] Wastewater is added to the mixing tank 42 by the wastewater pump 411. The drive mechanism 6 drives the stirring mechanism 7 and the dosing mechanism 5 to work, adding oxidant to the mixing tank 42 and stirring it. This makes the wastewater addition, oxidant addition and stirring work work in a coordinated manner, realizing the working mode of adding materials and stirring at the same time, which is conducive to the uniform mixing of wastewater and oxidant. Opening the solenoid valve 422 allows the wastewater mixed with oxidant to be discharged to the tank 4 through the discharge pipe 421.

[0042] Specifically, the drive mechanism 6 includes a servo motor 61 and a drive rod 62. The drive rod 62 is rotatably mounted on the housing 4. The servo motor 61 is connected to the drive rod 62 and drives the drive rod 62 to rotate. The drive rod 62 is connected to the stirring mechanism 7 and the dosing mechanism 5 respectively and drives these two mechanisms to work. The use of a speed-adjustable servo motor 61 facilitates the adjustment of the working state of the stirring mechanism 7 and the dosing mechanism 5 as needed.

[0043] Specifically, the dosing mechanism 5 includes a dosing cylinder 51, a piston rod 52, and a piston disc 53. The dosing cylinder 51 is mounted on the housing 4. A supply pipe 511 and a dosing pipe 512 are connected to the bottom of the dosing cylinder 51. One end of the supply pipe 511 is connected to a storage tank 513. The dosing pipe 512 is connected to a mixing tank 42. A one-way valve 514 is installed on both the supply pipe 511 and the dosing pipe 512. The piston rod 52 is connected to the piston disc 53. The piston disc 53 is movably mounted on the dosing cylinder 51 and divides the dosing cylinder 51 into upper and lower chambers. A transmission mechanism 8 is provided on the piston rod 52 to drive the piston rod 52 to move back and forth. The drive rod 62 is connected to the transmission mechanism 8.

[0044] The servo motor 61 drives the transmission mechanism 8 through the driving rod 62, the transmission mechanism 8 drives the piston rod 52 and the piston disc 53 to reciprocate relative to the dosing barrel 51, in the process of the piston disc 53 rising to drive the dosing barrel 51 to expand the lower chamber, under the action of negative pressure, the one-way valve 514 at the medicine supply pipe 511 is opened, the one-way valve 514 at the medicine supply pipe 512 is closed, and the oxidant at the medicine storage barrel 513 is extracted to the lower chamber of the dosing barrel 51, in the process of the piston disc 53 descending and extruding the lower chamber of the dosing barrel 51, under the action of positive pressure, the one-way valve 514 at the medicine supply pipe 511 is closed, the one-way valve 514 at the medicine supply pipe 512 is opened, and the oxidant is extruded into the mixing barrel 42 through the medicine supply pipe 512, thereby realizing the dosing work. The servo motor 61 with adjustable rotating speed is adopted to facilitate adjusting the reciprocating speed of the piston disc 53 according to the sewage flow, so as to adjust the dosing speed according to the sewage flow.

[0045] Specifically, the transmission mechanism 8 comprises an adjusting frame 81, a sliding block 82 and a connecting rod 83, the adjusting frame 81 is connected with the driving rod 62, the sliding block 82 is movably arranged on the adjusting frame 81, the adjusting frame 81 is provided with an adjusting assembly 9 for adjusting the position of the sliding block 82, and the connecting rod 83 is hingedly connected with the sliding block 82 at one end and hingedly connected with the piston rod 52 at the other end.

[0046] The adjusting frame 81 and the sliding block 82 are driven to rotate by the driving rod 62, the sliding block 82 drives the piston rod 52 and the piston disc 53 to reciprocate relative to the dosing barrel 51 through the connecting rod 83, thereby realizing the dosing work.

[0047] Specifically, the adjusting assembly 9 comprises a driving motor 91 and a screw rod 92, the screw rod 92 is rotatably arranged on the adjusting frame 81, the driving motor 91 is in transmission connection with the screw rod 92 and drives the screw rod 92 to rotate, and the sliding block 82 is provided with a screw hole matched with the screw rod 92.

[0048] The screw rod 92 is driven to rotate by the driving motor 91, and the screw rod 92 is matched with the screw hole on the sliding block 82 during the rotating process, thereby driving the sliding block 82 to move, adjusting the position of the sliding block 82 relative to the adjusting frame 81, adjusting the rotating radius of the sliding block 82, adjusting the reciprocating stroke range of the piston disc 53 relative to the dosing barrel 51, and adjusting the dosing amount, thereby facilitating adjusting the dosing amount according to the needs.

[0049] Embodiment 3:

[0050] With reference to Figures 1 to 5 , in combination with the technical solutions of Embodiment 1 and Embodiment 2, in the embodiment, the stirring mechanism 7 comprises a first stirring rod 71, a transmission bevel gear 72 and a driving bevel gear 73, the first stirring rod 71 is rotatably arranged on the mixing barrel 42, the transmission bevel gear 72 is coaxially arranged on the first stirring rod 71, and the driving bevel gear 73 is coaxially arranged on the driving rod 62 and is in meshing connection with the transmission bevel gear 72.

[0051] The servo motor 61 drives the driving rod 62 to rotate, drives the first stirring rod 71 to rotate through the transmission of the driving bevel gear 73 and the transmission bevel gear 72, and realizes the stirring work.

[0052] Specifically, the second stirring rod 711 is coaxially connected and arranged on the first stirring rod 71, and the second stirring rod 711 is located in the inner cavity of the box body 4.

[0053] The second stirring rod 711 is driven to rotate by the first stirring rod 71 to stir the sewage at the box body 4, so that the sewage and the oxidant are mixed more uniformly.

[0054] The rotation speed of the servo motor 61 can be adjusted, and the stirring rotation speed of the first stirring rod 71 can be adjusted according to the sewage flow. The dosing amount is adjusted by the adjusting assembly 9 on the basis of the sewage flow and the stirring rotation speed, the sewage adding, the oxidant adding and the stirring work are cooperated, the sewage and the oxidant are uniformly mixed, and the sewage purification effect is improved.

[0055] Specifically, the filter material filled in the inner cavities of the upper cylinder body 12 and the lower cylinder body 16 is quartz sand, and the catalytic filler filled in the inner cavity of the main cylinder body 14 is mixed from coffee residue biochar and quartz sand. The quartz sand with a particle size of 200 is used in the embodiment, which is helpful to uniformly distribute the water flow, reduce the hydraulic impact, increase the contact opportunity of the active oxidizing substances and the pollutants in the water, make the sewage more stably perform the oxidation reaction at the main cylinder body 14, and preliminarily filter the large-particle impurities. The upper grid net 13 and the lower grid net 15 can effectively space the fillers and prevent the fillers from deviating to other cylinder cavities.

[0056] The preparation process of the coffee residue biochar is as follows:

[0057] S1: Collect coffee residue and use ultrapure water and ethanol to preliminarily clean the coffee residue, and dry the coffee residue in a 60℃ oven for 72 hours;

[0058] S2: Dissolve 0.015 mol of ferrous sulfate and 0.015 mol of manganese chloride in 50 ml of deionized water, then add 5 g of coffee residue treated by S1, stir at room temperature for 12 hours, and dry the mixture in a 60℃ oven for 24 hours to obtain dried material;

[0059] S3: Place the dried material treated by S2 in a quartz boat and calcine under N2 atmosphere, the calcination temperature is 700℃, the heating rate is 10℃ / min, and after calcination for 2 hours, cool to room temperature to obtain coffee residue biochar.

[0060] The large amount of oxidizing active substances generated by the activation of the coffee residue biochar to the persulfate will react with the pollutants in the water, so that the pollutants are oxidized and decomposed, and the sewage purification effect is enhanced.

[0061] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art, without departing from the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application by using the above technical content, or modify it into equivalent embodiments with equivalent changes. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical content of the present application, without departing from the technical scheme of the present application, all belong to the protection scope of the present technical scheme.

Claims

1. A biochar-based detachable reactor, characterized in that, The utility model provides a water supply pipe, communication pipe and a plurality of cylinder group, the cylinder group is by top cover, upper cylinder, upper grid, main cylinder, lower grid, lower cylinder and bottom cover detachable concatenation in proper order is formed, every bottom cover all is provided with with the lower cylinder intercommunication's water inlet pipe, drain pipe and series connection pipe and is provided with first reversing valve at four intercommunication places, every top cover all is provided with with the upper cylinder intercommunication's water outlet pipe and flush pipe, water outlet pipe and flush pipe all are provided with valve, water supply pump is provided on water supply pipe, water supply pipe communicates with a plurality of water inlet pipe respectively, water supply pipe is provided with box body intercommunication, sewage pipe and dosing mechanism are provided on the box body, communication pipe communicates with a plurality of flush pipe and a plurality of series connection pipe respectively, second reversing valve is provided at three intercommunication places of communication pipe, flush pipe and series connection pipe, the inner chamber of upper cylinder and lower cylinder is filled with filter material, and the inner chamber of main cylinder is filled with catalytic filler.

2. The detachable reactor based on biochar according to claim 1, characterized in that: The box body is provided with a mixing barrel, a driving mechanism and a stirring mechanism, the dosing mechanism and the sewage pipe are arranged on the mixing barrel, the sewage pump is arranged on the sewage pipe, the dosing mechanism is used for adding an oxidizing agent to the sewage pipe, the stirring mechanism is used for stirring materials in the mixing barrel, the driving mechanism is in driving connection with the stirring mechanism and the dosing mechanism respectively and drives the two mechanisms to work, and the mixing barrel is provided with a discharging pipe at the bottom, and an electromagnetic valve is arranged at the discharging pipe.

3. The detachable reactor based on biochar according to claim 2, characterized in that: The driving mechanism comprises a servo motor and a driving rod, the driving rod is rotatably installed on the box body, the servo motor is in driving connection with the driving rod and drives the driving rod to rotate, and the driving rod is in driving connection with the stirring mechanism and the dosing mechanism respectively and drives the two mechanisms to work.

4. The detachable reactor based on biochar according to claim 3, characterized in that: The dosing mechanism comprises a dosing barrel, a piston rod and a piston disc, the dosing barrel is arranged on the box body, the dosing barrel is provided with a medicine supply pipe and a dosing pipe at the bottom in intercommunication, one end of the medicine supply pipe is provided with a medicine storage barrel in intercommunication, the dosing pipe is in intercommunication with the mixing barrel, the medicine supply pipe and the dosing pipe are both provided with a one-way valve, the piston rod is connected with the piston disc, the piston disc is movably installed on the dosing barrel and divides the dosing barrel into two chambers, the piston rod is provided with a transmission mechanism for driving the piston rod to move back and forth, and the driving rod is in driving connection with the transmission mechanism.

5. The detachable reactor based on biochar according to claim 4, characterized in that: The transmission mechanism comprises an adjusting frame, a sliding block and a connecting rod, the adjusting frame is connected with the driving rod, the sliding block is movably arranged on the adjusting frame, an adjusting assembly for adjusting the position of the sliding block is arranged on the adjusting frame, one end of the connecting rod is hingedly connected with the sliding block, and the other end of the connecting rod is hingedly connected with the piston rod. 6.The detachable reactor based on biochar according to claim 5, wherein: The adjusting assembly comprises a driving motor and a screw rod, the screw rod is rotatably arranged on the adjusting frame, the driving motor is in transmission connection with the screw rod and drives the screw rod to rotate, and the sliding block is provided with a screw hole matched with the screw rod. 7.The detachable reactor based on biochar according to claim 3, wherein: The stirring mechanism comprises a first stirring rod, a transmission bevel gear and a driving bevel gear, the first stirring rod is rotatably arranged on the mixing barrel, the transmission bevel gear is coaxially arranged on the first stirring rod, and the driving bevel gear is coaxially arranged on the driving rod and is in meshing connection with the transmission bevel gear. 8.The detachable reactor based on biochar according to claim 7, wherein: The first stirring rod is coaxially connected with a second stirring rod, and the second stirring rod is located in the inner cavity of the box body. 9.The detachable reactor based on biochar according to claim 1, wherein: The filter material filled in the inner cavities of the upper cylinder body and the lower cylinder body is quartz sand, and the catalytic filler filled in the inner cavity of the main cylinder body is made of mixed coffee residue biochar and quartz sand.

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