Glycerol wastewater treatment equipment

Abstract

The invention relates to the technical field of wastewater treatment, in particular to glycerin wastewater treatment equipment, which comprises a biological tank; the collecting assembly comprises a lifting disc arranged in the biological tank, the lifting disc is driven to ascend and descend in the biological tank, a loading box is fixedly installed on the outer wall of the lifting disc, and a first annular magnetic ring driven to ascend and descend in the biological tank is fixedly installed on the upper end face of the lifting disc; and an extension curtain is fixedly mounted on the lower end surface of the first annular magnetic ring. Through the synergistic effect of the aeration assembly and the magnetic suction type collection structure, the problem of microorganism anoxia in the high-concentration glycerin wastewater treatment process is effectively solved, through spiral airflow formed by the annular pipe and the inclined aeration pipe, the oxygen dissolving efficiency is improved, meanwhile, glycerin enrichment foam is driven to gather towards the center of a biological tank, and the biological treatment effect is improved. And in cooperation with the magnetic suction sealing design of the lifting disc and the collecting tank, directional extraction of high-concentration glycerin foam is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, in particular to glycerin wastewater treatment equipment. Background Art

[0002] Oily wastewater usually refers to wastewater generated in the process of producing or using glycerol. Glycerol is a colorless, odorless, viscous liquid that is widely used in food, medicine, cosmetics, pharmaceuticals, chemical industry and other fields.

[0003] There are many types of existing wastewater treatment devices, such as the construction site wastewater treatment system disclosed in patent publication number CN118878147B. This device is mainly used to treat thin layers of oily dirt floating on the water surface because it is difficult to precipitate quickly. However, glycerol, as a highly hydrophilic oily dirt, usually mixes with wastewater. When the wastewater contains a high concentration of glycerol, although a glycerol-enriched water surface may appear, some glycerol will still merge with the wastewater. If an aerobic process is used to treat glycerol wastewater, excessive glycerol concentration will cause microorganisms to consume a large amount of oxygen, which will in turn cause the dissolved oxygen in the biological pool to drop rapidly, and even cause local hypoxia. Under such hypoxic conditions, the degradation efficiency of microorganisms will be significantly reduced, and some anaerobic microorganisms may become dominant, thereby affecting the wastewater treatment effect. Therefore, if the glycerol in the glycerol wastewater is not effectively treated, when the existing aerobic process is used to treat high-concentration glycerol wastewater, the microorganisms will consume too much oxygen, resulting in local hypoxia and a decrease in degradation efficiency. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a glycerin wastewater treatment device, which can effectively solve the problem in the prior art that glycerin and wastewater are mixed and cannot be effectively removed.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a glycerin wastewater treatment device, comprising: biological pond; A collection assembly, the collection assembly comprising a lifting plate disposed within the biological pool, the lifting plate being driven to rise and fall within the biological pool, a loading box being fixedly mounted on an outer wall of the lifting plate, a first annular magnetic ring being driven to rise and fall within the biological pool being fixedly mounted on an upper end surface of the lifting plate, an extension curtain being fixedly mounted on a lower end surface of the first annular magnetic ring, the lower end of the extension curtain being fixedly connected to an inner bottom end of the loading box; The conveying component includes a collection tank arranged above the biological pool, a lifting plate is airtightly slidably installed inside the collection tank, a chassis is fixedly installed on the lower end surface of the collection tank, a plurality of inlet pipes are fixedly installed in a circular array inside the chassis, a first one-way valve is fixedly installed on the inner wall of the inlet pipe, and a second annular magnetic ring is embedded in the lower end surface of the chassis, and the second annular magnetic ring is magnetically engaged with the first annular magnetic ring.

[0006] Preferably, a plurality of fixing seats are fixedly installed in a circumferential array at the inner bottom end of the biological pond, an annular tube is fixedly installed on the inner wall of the fixing seat, a plurality of inclined aeration tubes are connected in a circumferential array on the outer wall of the annular tube, and the annular tube is connected to an aeration device; A main shaft is rotatably installed at the bottom end of the biological pool, and the upper end of the main shaft passes through the chassis and is rotatably connected to the inner top end of the collection tank. A first thread groove is provided on the outer wall of the main shaft and inside the biological pool, and a second thread groove is provided on the outer wall of the main shaft and inside the collection tank. The lifting plate is slidingly connected to the outer wall of the main shaft, and a water seal is fixedly installed on the lower end surface of the lifting plate and on the outer wall of the main shaft. A first electromagnetic clutch is fixedly installed on the upper end of the main shaft and on the outer wall of the main shaft, and the first electromagnetic clutch is threadedly connected to the first thread groove. The first electromagnetic clutch is electrically connected to a controller, and a plurality of first brackets are rotatably installed on the outer wall of the first electromagnetic clutch in a circumferential array, and the first bracket is fixedly connected to the first annular magnetic ring at one end away from the main shaft axis.

[0007] Preferably, a card slot is provided on the lower end surface of the chassis, a rotating drive component is fixedly installed on the upper end surface of the collection tank, the rotating drive component is electrically connected to the controller, the output end of the rotating drive component passes through the collection tank and is fixedly connected to the main shaft, a second electromagnetic clutch is rotatably installed on the inner wall of the lifting plate, the second electromagnetic clutch is threadedly connected to the second thread groove, a plurality of second brackets are fixedly installed in a circular array on the outer wall of the biological pool, the second brackets are fixedly connected to the outer wall of the collection tank, and an air outlet is provided on the upper end surface of the collection tank.

[0008] Preferably, it also includes a filtration reflux component, which includes a support plate fixed to the outer wall of the biological pool, a flocculation tank fixedly installed on the upper end surface of the support plate, a liquid inlet pipe connected to the upper end surface of the liquid inlet pipe, a third one-way valve fixedly installed on the inner wall of the liquid inlet pipe, both ends of the liquid inlet pipe are connected to the collection tank, two groups of stirring rods are provided inside the flocculation tank, and a plurality of stirring teeth are provided in a circular array on the inner wall of the flocculation tank and above the stirring rods.

[0009] Preferably, a bottom plate is airtightly slidably installed at the inner bottom end of the flocculation tank, and a telescopic tube is fixedly installed on the upper end surface of the bottom plate. The telescopic tube is slidably connected by three sections of sliding tubes, wherein the outer walls of two sections of the sliding tubes are fixedly connected to the stirring rods, and the outer wall of the other section of the sliding tube is fixedly connected to the stirring teeth, and the upper end surface of the telescopic tube is fixedly installed with a top plate.

[0010] Preferably, the outer wall of the flocculation tank is symmetrically connected with two external boxes, the inner wall of the external box is airtightly slidably mounted with a sliding plate, the outer wall of the top plate is provided with a slide groove, the sliding plate is slidably connected to the slide groove, the lower end surface of the sliding plate is fixedly mounted with a floating block, the lower end surface of the bottom plate is fixedly mounted with a lifting tube, the outer wall of the lifting tube is provided with a plurality of annular grooves in a linear array, the lower end surface of the support plate is fixedly mounted with a rotating lifting device, the rotating lifting device is electrically connected to the controller, the rotating lifting device has two output ends, and the two output ends of the rotating lifting device are respectively fixedly connected and meshed with the lifting tube.

[0011] Preferably, the outer wall of the flocculation tank is symmetrically connected to two flow pipes, the inner wall of the flow pipe is fixedly installed with a solenoid valve, the solenoid valve is electrically connected to the controller, and the end of the flow pipe away from the flocculation tank is connected to a filter reflux box.

[0012] Preferably, a partition is fixedly installed on the inner wall of the filter reflux box at the middle position, a second one-way valve is embedded in the partition, filter cotton is fixedly installed on the upper end face of the partition, an extrusion plate is air-tightly slidably installed on the inner wall of the filter reflux box and below the partition, the partition, the filter reflux box and the extrusion plate form a reflux space, a connecting rod is fixedly installed on one side of the extrusion plate, the connecting rod is fixedly connected to the lower end of the lifting pipe, a sealing slide is fixedly installed on the outer side of the connecting rod, the sealing slide is air-tightly slidably connected to the filter reflux box, the outer wall of the filter reflux box is connected to a reflux pipe at the corresponding reflux space, one end of the reflux pipe is connected to the biological pool, an electromagnetic one-way valve is fixedly installed on the inner wall of the reflux pipe, and the electromagnetic one-way valve is electrically connected to the controller.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: First, through the synergistic effect of the aeration component and the magnetic collection structure, the problem of microbial hypoxia in the treatment of high-concentration glycerol wastewater is effectively solved. The spiral airflow formed by the annular pipe and the inclined aeration pipe drives the glycerol-enriched foam to gather towards the center of the biological pool while improving the dissolved oxygen efficiency. Combined with the magnetic sealing design of the lifting plate and the collection tank, the directional extraction of high-concentration glycerol foam is achieved. On the one hand, this structure avoids the problem of uneven dissolved oxygen caused by local airflow turbulence in traditional aeration systems. On the other hand, it reduces the glycerol concentration in the biological pool through physical separation, maintaining an aerobic degradation environment for microorganisms.

[0014] Secondly, a closed-loop treatment system is formed through the designed filter reflux component to avoid secondary contamination of flocculants in glycerin wastewater treatment. The dynamic mixing of flocculant and wastewater is achieved through the floating block linkage stirring mechanism, and the layered stirring structure driven by the telescopic tube ensures that the flocculation reaction is sufficient while destroying the foam layer, allowing the foam and wastewater to mix together, avoiding the flocculant from being unable to act on glycerin or other oil impurities attached to the foam. The filter reflux box adopts a pressure-driven two-way filtration design. After the flocculants are intercepted, the treated water is returned to the biological pool through the extrusion reflux mechanism, which not only ensures the continuity of the system treatment, but also can recover the glycerin flocculants filtered in the filter cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the collecting assembly of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the lifting plate of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the collecting tank of the present invention; Figure 5 This is a schematic structural diagram of the filter reflux assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the flocculation tank of the present invention; Figure 7 This is a schematic diagram of the internal structure of the filter reflux box of the present invention.

[0017] Reference numerals: 1, biological pool; 2, collecting assembly; 201, fixing seat; 202, annular pipe; 203, inclined aeration pipe; 204, main shaft; 205, lifting plate; 206, first thread groove; 207, second thread groove; 208, first electromagnetic clutch; 209, water seal; 210, loading box; 211, extension curtain; 212, first bracket; 213, first annular magnetic ring; 3, conveying assembly; 301, second bracket; 302, collecting tank; 303, rotating drive member; 304, lifting plate; 305, second electromagnetic clutch; 306, chassis; 307, second annular magnetic ring; 3 08. Card slot; 309. Inlet pipe; 310. First one-way valve; 4. Filter reflux assembly; 401. Liquid inlet pipe; 402. Support plate; 403. Flocculation tank; 404. External box; 405. Lifting pipe; 406. Telescopic pipe; 407. Stirring rod; 408. Stirring teeth; 409. Top plate; 410. Sliding plate; 411. Floating block; 412. Rotary lifting device; 413. Circulation pipe; 414. Filter reflux box; 415. Partition; 416. Second one-way valve; 417. Extrusion plate; 418. Connecting rod; 419. Sealing slide; 420. Reflux pipe; 421. Filter cotton. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example: Refer to Figures 1 to 7 , a glycerol wastewater treatment device, comprising: Biological pool 1, where aerobic organisms are arranged inside the biological pool 1 to treat wastewater; The collecting assembly 2 includes a lifting plate 205 disposed inside the biological pool 1. The lifting plate 205 is driven to rise and fall inside the biological pool 1. A loading box 210 is fixedly mounted on the outer wall of the lifting plate 205. A first annular magnetic ring 213 is fixedly mounted on the upper end surface of the lifting plate 205 and is driven to rise and fall inside the biological pool 1. An extension curtain 211 (flexible and retractable sealing material) is fixedly mounted on the lower end surface of the first annular magnetic ring 213. The lower end of the extension curtain 211 is fixedly connected to the inner bottom end of the loading box 210. The conveying component 3 includes a collection tank 302 arranged above the biological pool 1. A lifting plate 304 is airtightly slidably installed inside the collection tank 302. A chassis 306 is fixedly installed on the lower end surface of the collection tank 302. A plurality of inlet pipes 309 are fixedly installed in a circular array inside the chassis 306. A first one-way valve 310 is fixedly installed on the inner wall of the inlet pipe 309. A second annular magnetic ring 307 is embedded in the lower end surface of the chassis 306. The second annular magnetic ring 307 is magnetically matched with the first annular magnetic ring 213. The magnetic attraction force threshold of the second annular magnetic ring 307 and the first annular magnetic ring 213 (≥200N) ensures sealing reliability.

[0021] Reference Figures 2 to 3 A plurality of fixing seats 201 are fixedly installed in a circular array at the inner bottom end of the biological pool 1. An annular tube 202 is fixedly installed on the inner wall of the fixing seat 201. A plurality of inclined aeration tubes 203 (with an inclination angle of 30°-45°) are connected in a circular array on the outer wall of the annular tube 202. The annular tube 202 is connected to an aeration device. The aeration device adopts an existing bubble aeration device. This device uses an air compressor to send air into the water through a bubble aerator. The air is dispersed in the form of small bubbles, which increases the contact area with the water, improves the oxygen dissolution efficiency, and increases aerobic biological activity. At the same time, the bubbles generated can cause glycerin and other oil impurities contained in the wastewater to adhere to the bubbles and float upward to the surface of the wastewater. The main shaft 204 is rotatably installed at the bottom end of the biological pool 1, and the upper end of the main shaft 204 passes through the bottom plate 306 and is rotatably connected to the inner top of the collection tank 302. The outer wall of the main shaft 204 is provided with a first thread groove 206 inside the biological pool 1, and the outer wall of the main shaft 204 is provided with a second thread groove 207 inside the collection tank 302. The lifting plate 205 is slidably connected to the outer wall of the main shaft 204. The lower end surface of the lifting plate 205 and the outer wall of the main shaft 204 are fixedly provided with a water seal 209 (a sealing structure to prevent liquid leakage). The water seal 209 can be raised to the first position when the lifting plate 205 is raised. During the thread groove 206, the wastewater and foam above the lifting plate 205 are kept sealed to prevent the wastewater and foam from leaking through the first thread groove 206. The first electromagnetic clutch 208 is fixedly installed on the upper end of the main shaft 204 and on the outer wall of the main shaft 204. The first electromagnetic clutch 208 is threadedly connected to the first thread groove 206. The first electromagnetic clutch 208 is electrically connected to the controller. A plurality of first brackets 212 are rotatably installed on the outer wall of the first electromagnetic clutch 208 in a circular array. The first bracket 212 is fixedly connected to the first annular magnetic ring 213 at one end away from the axis of the main shaft 204.

[0022] Reference Figure 4, a card slot 308 is provided on the lower end surface of the chassis 306, and the card slot 308 is correspondingly engaged with the first electromagnetic clutch 208. A rotating drive member 303 is fixedly installed on the upper end surface of the collection tank 302, and the rotating drive member 303 is electrically connected to the controller. The output end of the rotating drive member 303 passes through the collection tank 302 and is fixedly connected to the main shaft 204. The inner wall of the lifting plate 304 is rotatably installed with a second electromagnetic clutch 305, and the second electromagnetic clutch 305 is threadedly connected to the second thread groove 207. A plurality of second brackets 301 are fixedly installed in a circular array on the outer wall of the biological pool 1. The second bracket 301 is fixedly connected to the outer wall of the collection tank 302. The upper end surface of the collection tank 302 is provided with an air outlet (not shown in the accompanying drawings). The first electromagnetic clutch 208 and the second electromagnetic clutch 305 are mechanical devices that use electromagnetic principles to achieve automatic engagement and disengagement. They are widely used in transmission systems, especially in situations where instantaneous connection and disconnection are required. They usually consist of an electromagnet and a clutch part. When the electromagnet is energized, a magnetic force is generated to combine the clutch parts together. When the power is off, the clutch is separated, thereby connecting and disconnecting the mechanical transmission.

[0023] Reference Figure 6 , also includes a filtration reflux component 4, the filtration reflux component 4 includes a support plate 402 fixed to the outer wall of the biological pool 1, the upper end surface of the support plate 402 is fixedly installed with a flocculation tank 403, the flocculation tank 403 and the liquid inlet pipe 401 can be fixedly assembled by screw threads, and after the liquid inlet pipe 401 is removed, a flocculant is placed through the connection, and the flocculant is used using an existing polymer mixture. This type of flocculant is usually used for the treatment of high-concentration suspended matter or complex liquids, and can have both the rapid response characteristics of inorganic flocculants and the efficient flocculation ability of organic polymers. The upper end surface of the flocculation tank 403 is connected to the liquid inlet pipe 401, and the liquid inlet pipe 401 is removed. A third one-way valve is fixedly installed on the inner wall of the liquid pipe 401. Both ends of the liquid inlet pipe 401 are connected to the collection tank 302. Two sets of stirring rods 407 are provided inside the flocculation tank 403. A plurality of stirring teeth 408 are provided in a circular array on the inner wall of the flocculation tank 403 and above the stirring rods 407. The stirring teeth 408 eliminate foam floating on the surface of the wastewater as the top plate 409 rotates. When the wastewater flows into the flocculation tank 403, a certain amount of foam is generated due to the impact of the water flow. However, the foam is not eliminated in the flocculation tank 403, and glycerin or other oil impurities attached to the surface of the foam cannot come into contact with the flocculant for flocculation.

[0024] Reference Figure 6The inner bottom end of the flocculation tank 403 is airtightly slidably installed with a bottom plate, and the upper end surface of the bottom plate is fixedly installed with a telescopic tube 406. The telescopic tube 406 is slidably connected by three sections of sliding tubes. The telescopic tube 406 set with three sections of sliding tubes can be extended and retracted inside the flocculation tank 403 through the buoyancy of the floating block 411. The set stirring rod 407 will be evenly expanded in the flocculation tank 403 as the telescopic tube 406 is extended and retracted to stir the flocculant and wastewater. The outer walls of two sections of the sliding tube are fixedly connected to the stirring rod 407, and the outer wall of the other section of the sliding tube is fixedly connected to the stirring teeth 408. The upper end surface of the telescopic tube 406 is fixedly installed with a top plate 409.

[0025] Reference Figure 6 The outer wall of the flocculation tank 403 is symmetrically connected to two external boxes 404, and the inner wall of the external box 404 is airtightly slidably installed with a sliding plate 410, the outer wall of the top plate 409 is provided with a slide groove, the sliding plate 410 is slidably connected to the slide groove, the lower end surface of the sliding plate 410 is fixedly installed with a floating block 411, and the lower end surface of the bottom plate is fixedly installed with a lifting tube 405. The outer wall of the lifting tube 405 is provided with a plurality of annular grooves in a linear array, and the lower end surface of the support plate 402 is fixedly installed with a rotating lifting device 412. The rotating lifting device 412 is composed of a mounting frame and two driving motors, a camshaft, and a gear. The two driving motors drive the camshafts and the gears respectively. The camshafts are slidingly connected to the inner wall fibers of the lifting tube 405, and the gears are engaged with the annular grooves. The rotating lifting device 412 is electrically connected to the controller, and the rotating lifting device 412 has two output ends. The two output ends of the rotating lifting device 412 are respectively fixedly connected and meshed with the lifting tube 405.

[0026] Reference Figures 6 and 7The outer wall of the flocculation tank 403 is symmetrically connected to two flow pipes 413. The inner wall of the flow pipe 413 is fixedly installed with a solenoid valve. The solenoid valve is a device that uses electromagnetic force to control the opening and closing of a valve. It is widely used in automatic control systems to control the flow of liquids and gaseous fluids. When current passes through the electromagnetic coil, an electromagnetic field is generated, which attracts the valve core or valve stem to open or close the valve. The solenoid valve is electrically connected to the controller. The end of the flow pipe 413 away from the flocculation tank 403 is connected to a filter reflux box 414. The filter reflux box One side of 414 is equipped with a cover plate by existing screws. By twisting the screws to remove the cover plate, the filtered filter cotton 421 can be taken out. A partition 415 is fixedly installed on the inner wall of the filter reflux box 414 and in the middle position. A second one-way valve 416 is embedded in the partition 415. The upper end surface of the partition 415 is fixedly installed with filter cotton 421. The filter cotton 421 uses existing activated carbon filter cotton. The activated carbon filter cotton can not only remove organic matter or some specific impurities (such as odor, pigment, etc.) in the wastewater, but also filter flocculation. The particles are filtered on the inner wall of the reflux box 414 and an extrusion plate 417 is installed under the partition 415 in an airtight sliding manner. The partition 415, the reflux box 414 and the extrusion plate 417 form a reflux space. A connecting rod 418 is fixedly installed on one side of the extrusion plate 417. The connecting rod 418 is fixedly connected to the lower end of the lifting tube 405. A sealing slide 419 is fixedly installed on the outer side of the connecting rod 418. The sealing slide 419 is airtightly slidably connected to the reflux box 414. The outer wall of the reflux box 414 is filtered and slidable at the corresponding reflux space. The flow space is connected to a return pipe 420, one end of which is connected to the biological pool 1. An electromagnetic one-way valve is fixedly installed on the inner wall of the return pipe 420, and the electromagnetic one-way valve is electrically connected to the controller. The electromagnetic one-way valve is a device that combines the functions of a solenoid valve and a one-way valve. It can control the flow direction of the fluid and control the opening and closing of the valve through electromagnetic force. When the wastewater after filtering in the return space flows back to the inside of the biological pool 1 under the pressure of the extrusion plate 417, the wastewater inside the biological pool 1 is prevented from flowing back into the return space.

[0027] The working principle of the present invention is as follows: The wastewater is discharged into the biological pool 1 so that the lifting plate 205 is submerged in the wastewater and keeps a certain distance from the surface of the wastewater; When the aeration device is started, gas enters the annular tube 202 and passes through a plurality of inclined aeration tubes 203 obliquely installed on the outer wall of the annular tube 202. The air ejected outward from the inclined aeration tubes 203 forms flowing bubbles at the inner edge of the biological pool 1. The bubbles flow toward the surface of the wastewater, causing the wastewater to spirally flow within the biological pool 1. As the bubbles flow upward in the wastewater, glycerol and other oil impurities contained in the wastewater adhere to the surface of the bubbles (glycerol itself has a certain solubility and usually does not completely float on the water surface, but is mixed with water. However, through the aeration process, the bubbles can cause glycerol molecules to aggregate and increase their buoyancy, especially when the glycerol concentration is high) and float upward to the surface of the wastewater. It should be noted that the aeration efficiency needs to be appropriately adjusted so that the wastewater slowly spirals within the biological pool 1, and the glycerol and other oil impurities attached to the bubbles float to the surface of the wastewater with the bubbles and gather in the middle area of the biological pool 1. When a certain amount of bubbles containing glycerin or other oil impurities gather on the surface of the wastewater, the rotating drive member 303 is turned on to drive the main shaft 204 to rotate. The controller controls the voltage input to the first electromagnetic clutch 208 so that the first electromagnetic clutch 208 engages with the first thread groove 206. The rotating main shaft 204 drives the first electromagnetic clutch 208 to rise. The rising first electromagnetic clutch 208 drives the first annular magnetic ring 213 to rise through the first bracket 212. The rising first annular magnetic ring 213 stretches the extension curtain 211. The continuously rising first annular magnetic ring 213 is magnetically connected to the second annular magnetic ring 307. The stretched extension curtain 211 is extended and unfolded between the lifting plate 205 and the bottom plate 306, and the bubbles floating on the surface of the wastewater and containing glycerin and other oil impurities in the middle area are gathered on the upper end surface of the lifting plate 205. At this time, the controller disconnects the voltage input to the first electromagnetic clutch 208 and controls the voltage input to the second electromagnetic clutch 305, so that the second electromagnetic clutch 305 engages with the second thread groove 207. The rotating main shaft 204 drives the second electromagnetic clutch 305 and the lifting plate 304 to rise. The rising lifting plate 304 continuously reduces the air pressure between the lower end surface and the bottom plate 306, thereby continuously reducing the air pressure between the lifting plate 205 and the bottom plate 306. As the lifting plate 304 continues to rise, the lifting plate 205 slides and rises on the outer wall of the main shaft 204 as the air pressure between the lifting plate 205 and the bottom plate 306 continuously decreases. When the upper end surface of the lifting plate 205 fits the lower end surface of the bottom plate 306 together, the foam containing glycerin and other oil impurities accumulated above the lifting plate 205 will enter the collection tank 302 through the inlet pipe 309 and the first one-way valve 310. When it is time to collect the floating foam again, the controller activates the rotary drive member 303, driving the main shaft 204 to rotate in the reverse direction. The controller sequentially controls the voltages input to the first electromagnetic clutch 208 and the second electromagnetic clutch 305, causing the first electromagnetic clutch 208 to drive the lifting plate 205 down to its original position. The first annular magnetic ring 213 engages with the upper end surface of the lifting plate 205, causing the extension curtain 211 to fold and retract into the interior of the loading box 210. The second electromagnetic clutch 305 then drives the lifting plate 304 down to its original position. During the descent of the lifting plate 304, the first one-way valve 310 is closed, and the foam entering the collecting tank 302 is squeezed by the descending lifting plate 304 through the liquid inlet pipe 401 and the third one-way valve into the flocculation tank 403. It should be noted that when collecting the foam gathered above the lifting plate 205, a certain amount of wastewater will also accumulate above the lifting plate 205. These wastewaters will flow into the flocculation tank 403 together with the foam. In the process of continuously collecting foam, the foam will accumulate with the wastewater in the flocculation tank 403. The provided floating block 411 will be suspended on the surface of the wastewater according to the accumulated wastewater and foam, and the top plate 409 will be suspended on the surface of the wastewater through the sliding plate 410. The telescopic tube 406 will be suspended according to the top plate The height of the suspension 409 is slid and extended, driving the stirring rod 407 to extend inside the flocculation tank 403, but the stirring teeth 408 are always kept suspended on the surface of the wastewater together with the top plate 409. By opening the rotary lifting device 412 to drive the lifting tube 405, the bottom plate and the telescopic tube 406 to rotate, the telescopic tube 406 will drive the top plate 409 and the stirring teeth 408 to rotate. The rotating stirring teeth 408 will break up the foam floating on the surface of the wastewater, so that the foam and the wastewater are mixed together. During the rotation of the telescopic tube 406, the stirring rod 407 will be mobilized to rotate to stir the wastewater. When the accumulated wastewater and foam reach a certain height, flocculant is added to the inside of the flocculation tank 403. The flocculant will flocculate with the oil in the wastewater and flocculate the oil into larger particles. The rotating stirring rod 407 will evenly stir the wastewater and the flocculant. After the flocculant and the wastewater are flocculated and precipitated (when the existing flocculant and wastewater are flocculated, it is necessary to go through the initial mixing stage, the flocculation reaction stage, and the flocculation precipitation stage. The existing technology for controlling the flocculation of the flocculant and the wastewater is relatively mature and will not be described in detail here), the output port of the rotating lifting device 412 to control the lifting pipe 405 to rotate is closed, and the output end of the rotating lifting device 412 driving the lifting pipe 405 to rotate is opened by the controller. At the same time, the controller controls the solenoid valve to open, so that the inside of the flocculation tank 403 is higher than the position of the flow pipe 413. The wastewater flows into the filter reflux box 414 through the circulation pipe 413. The wastewater entering the filter reflux box 414 will flow slowly in the filter cotton 421, filter out larger flocculated particles, and enter the reflux space through the second one-way valve 416. In the process of the lifting pipe 405 driving the bottom plate to rise, the bottom plate will squeeze the wastewater inside the flocculation tank 403, so that the wastewater enters the filter reflux box 414 through the circulation pipe 413, is filtered by the filter cotton 421, and flows into the reflux space. In the process of the lifting pipe 405 rising, the connecting rod 418, the sealing slide plate 419 and the squeezing plate 417 will be driven to rise and fall. The rising squeezing plate 417 will squeeze the filtered wastewater in the reflux space.Wastewater is allowed to flow back into the biological pool 1 through the return pipe 420 and the electromagnetic one-way valve. (The wastewater flowing back into the biological pool 1 can impact the spiral flow of wastewater inside the biological pool 1, temporarily disrupting the spiral flow and preventing the glycerin in the spiral flow from effectively contacting the bubbles.) The sliding and lifting sealing slide 419 is airtightly connected to the filter reflux box 414, preventing wastewater from flowing out of the filter reflux box 414. By regularly removing and cleaning the filter cotton 421, the filter cotton 421 can be recycled and the glycerin flocculated in the filter cotton 421 can be recovered.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A glycerol wastewater treatment equipment, characterized in that, include: Biological pond (1); A collecting assembly (2), the collecting assembly (2) comprising a lifting plate (205) arranged inside the biological pool (1), the lifting plate (205) being driven to lift inside the biological pool (1), a loading box (210) being fixedly mounted on the outer wall of the lifting plate (205), a first annular magnetic ring (213) being driven to lift inside the biological pool (1) being fixedly mounted on the upper end surface of the lifting plate (205), an extension curtain (211) being fixedly mounted on the lower end surface of the first annular magnetic ring (213), the lower end of the extension curtain (211) being fixedly connected to the inner bottom end of the loading box (210); A conveying assembly (3) comprising a collection tank (302) arranged above a biological pool (1), a lifting plate (304) being airtightly slidably mounted inside the collection tank (302), a chassis (306) being fixedly mounted on the lower end surface of the collection tank (302), a plurality of inlet pipes (309) being fixedly mounted in a circular array inside the chassis (306), a first one-way valve (310) being fixedly mounted on the inner wall of the inlet pipe (309), a second annular magnetic ring (307) being embedded in the lower end surface of the chassis (306), and the second annular magnetic ring (307) being magnetically engaged with the first annular magnetic ring (213).

2. A glycerin wastewater treatment equipment according to claim 1, characterized in that, A plurality of fixing seats (201) are fixedly mounted in a circumferential array at the inner bottom end of the biological pond (1); an annular tube (202) is fixedly mounted on the inner wall of the fixing seat (201); a plurality of inclined aeration tubes (203) are connected in a circumferential array on the outer wall of the annular tube (202); and the annular tube (202) is connected to an aeration device; The inner bottom end of the biological pool (1) is rotatably mounted with a main shaft (204), the upper end of the main shaft (204) passes through the bottom plate (306) and is rotatably connected to the inner top end of the collection tank (302), the outer wall of the main shaft (204) and the inner part of the biological pool (1) are provided with a first thread groove (206), the outer wall of the main shaft (204) and the inner part of the collection tank (302) are provided with a second thread groove (207), the lifting plate (205) is slidably connected to the outer wall of the main shaft (204), and the lower end surface of the lifting plate (205) and the outer wall of the main shaft (204) are provided. A water seal (209) is fixedly installed, a first electromagnetic clutch (208) is fixedly installed at the upper end of the main shaft (204) and on the outer wall of the main shaft (204), the first electromagnetic clutch (208) is threadedly connected to the first thread groove (206), the first electromagnetic clutch (208) is electrically connected to a controller, and a plurality of first brackets (212) are rotatably installed in a circular array on the outer wall of the first electromagnetic clutch (208), and the first bracket (212) is fixedly connected to the first annular magnetic ring (213) at one end away from the axis of the main shaft (204).

3. A glycerin wastewater treatment equipment according to claim 1, characterized in that, A slot (308) is provided on the lower end surface of the chassis (306); a rotating drive member (303) is fixedly mounted on the upper end surface of the collection tank (302); the rotating drive member (303) is electrically connected to a controller; an output end of the rotating drive member (303) passes through the collection tank (302) and is fixedly connected to the main shaft (204); a second electromagnetic clutch (305) is rotatably mounted on the inner wall of the lifting plate (304); the second electromagnetic clutch (305) is threadedly connected to the second thread groove (207); a plurality of second brackets (301) are fixedly mounted in a circumferential array on the outer wall of the biological pool (1); the second brackets (301) are fixedly connected to the outer wall of the collection tank (302); and an air outlet is provided on the upper end surface of the collection tank (302).

4. A glycerin wastewater treatment equipment according to claim 1, characterized in that, The invention also includes a filtration reflux component (4), the filtration reflux component (4) including a support plate (402) fixed to the outer wall of the biological pool (1), a flocculation tank (403) fixedly mounted on the upper end surface of the support plate (402), the upper end surface of the flocculation tank (403) being connected to a liquid inlet pipe (401), a third one-way valve fixedly mounted on the inner wall of the liquid inlet pipe (401), two ends of the liquid inlet pipe (401) being connected to a collection tank (302), two groups of stirring rods (407) being arranged inside the flocculation tank (403), and a plurality of stirring teeth (408) being arranged in a circumferential array on the inner wall of the flocculation tank (403) and above the stirring rods (407).

5. A glycerin wastewater treatment equipment according to claim 4, characterized in that, The inner bottom end of the flocculation tank (403) is airtightly slidably mounted with a bottom plate, the upper end surface of the bottom plate is fixedly mounted with a telescopic tube (406), the telescopic tube (406) is slidably connected by three sections of sliding tubes, wherein the outer walls of two sections of the sliding tubes are fixedly connected to the stirring rod (407), and the outer wall of the other section of the sliding tube is fixedly connected to the stirring teeth (408), and the upper end surface of the telescopic tube (406) is fixedly mounted with a top plate (409).

6. A glycerin wastewater treatment equipment according to claim 5, characterized in that: The outer wall of the flocculation tank (403) is symmetrically connected to two external boxes (404), the inner wall of the external box (404) is airtightly slidably mounted with a sliding plate (410), the outer wall of the top plate (409) is provided with a slide groove, the sliding plate (410) is slidably connected to the slide groove, the lower end surface of the sliding plate (410) is fixedly mounted with a floating block (411), the lower end surface of the bottom plate is fixedly mounted with a lifting tube (405), the outer wall of the lifting tube (405) is provided with a plurality of annular grooves in a linear array, the lower end surface of the support plate (402) is fixedly mounted with a rotating lifting device (412), the rotating lifting device (412) is electrically connected to a controller, the rotating lifting device (412) has two output ends, and the two output ends of the rotating lifting device (412) are respectively fixedly connected and meshed with the lifting tube (405).

7. A glycerin wastewater treatment equipment according to claim 6, characterized in that: The outer wall of the flocculation tank (403) is symmetrically connected to two flow pipes (413), the inner wall of the flow pipe (413) is fixedly mounted with a solenoid valve, the solenoid valve is electrically connected to a controller, and one end of the flow pipe (413) away from the flocculation tank (403) is connected to a filter reflux box (414).

8. A glycerin wastewater treatment equipment according to claim 7, characterized in that: A partition (415) is fixedly installed on the inner wall of the filter reflux box (414) and at a middle position. A second one-way valve (416) is embedded in the partition (415). A filter cotton (421) is fixedly installed on the upper end surface of the partition (415). An extrusion plate (417) is airtightly slidably installed on the inner wall of the filter reflux box (414) and below the partition (415). The partition (415), the filter reflux box (414) and the extrusion plate (417) form a reflux space. A connecting rod (421) is fixedly installed on one side of the extrusion plate (417). 18), the connecting rod (418) is fixedly connected to the lower end of the lifting tube (405), the outer side surface of the connecting rod (418) is fixedly installed with a sealing slide (419), the sealing slide (419) is air-tightly slidably connected to the filter reflux box (414), the outer wall of the filter reflux box (414) is connected to a reflux pipe (420) at the corresponding reflux space, one end of the reflux pipe (420) is connected to the biological pool (1), and an electromagnetic one-way valve is fixedly installed on the inner wall of the reflux pipe (420), and the electromagnetic one-way valve is electrically connected to the controller.

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