Automatic processing device for chemical waste liquid

Abstract

The application relates to the technical field of multistage treatment of waste liquid, and particularly discloses an automatic treatment device for chemical waste liquid, which comprises a buffer pre-separation unit, an oil-water separation unit, a pulse fluidization treatment unit and a static precipitation unit; the buffer pre-separation unit realizes preliminary settlement and separation of large-particle impurities of the waste liquid through a tank body and a temporary storage tank, thereby providing pretreatment guarantee for subsequent treatment; in the oil-water separation unit, a multilayer separation piece in a separation tank constitutes a step-by-step separation structure, thereby effectively enhancing oil-water separation efficiency and purity; the pulse fluidization treatment unit realizes batch pulse fluidization treatment of the waste liquid through cooperation of a fluidization cylinder and a conical cylinder, thereby effectively removing fine suspended matters and part of soluble pollutants; and the multiple precipitation cavities in the static precipitation unit realize shunt precipitation, thereby further improving the solid-liquid separation effect.

Description

Technical Field

[0001] This invention relates to the field of multi-stage wastewater treatment technology, and more specifically, to an automated treatment device for chemical wastewater. Background Technology

[0002] Traditional chemical waste treatment often employs a multi-unit decentralized operation method. The pretreatment unit often uses simple screens or sedimentation tanks, which are prone to clogging and require frequent cleaning and maintenance. They also have poor resistance to shock loads and are difficult to cope with fluctuations in water quality and quantity. The oil-water separation stage usually relies on a single separator or static stratification, which has limited separation efficiency, especially for emulsified oil or fine oil droplets. The deep treatment unit often uses continuous flow stirring reaction, which has short-circuit and dead zone phenomena, resulting in unsatisfactory mixing and mass transfer effects. Summary of the Invention

[0003] To overcome the above-mentioned technical problems, the present invention proposes an automated treatment device for chemical waste liquid.

[0004] The objective of this invention can be achieved through the following technical solutions: An automated treatment device for chemical waste liquid includes: A buffer pre-separation unit includes an interconnected tank and a temporary storage tank, with an inlet pipe connected to one end of the tank. An oil-water separation unit, which is connected to a temporary storage tank, includes a separation tank, wherein several separation components are distributed from top to bottom inside the separation tank; A pulsed fluidized bed processing unit includes a processing tank, a fluidizing cylinder connected to a separation tank is provided inside the processing tank, a conical cylinder is connected to the lower end of the fluidizing cylinder, and a discharge port is provided at the bottom of the processing tank; A settling unit includes a settling tank connected to a discharge port, wherein several settling chambers are distributed within the settling tank.

[0005] As a further aspect of the present invention: the tank body is provided with a plurality of buffer tanks, adjacent buffer tanks are separated by partition plates, a pre-separation tank is provided at one end of the tank body near the liquid inlet pipe, and a gate is provided between the pre-separation tank and each buffer tank; Several liquid pumps are installed at the bottom of the temporary storage tank. Each liquid pump output is connected to a liquid pump branch pipe. All liquid pump branch pipes are connected to a main liquid pump pipe, which is connected to the separation tank.

[0006] As a further aspect of the present invention: a flexible plate is movably disposed within the pre-separation groove, a drive cylinder for driving the flexible plate is installed above the pre-separation groove, and a pre-separation grid is embedded within the flexible plate.

[0007] As a further aspect of the present invention: two sets of floating weir gates are symmetrically arranged at one end of the tank near the temporary storage tank, an intercepting plate is installed between the two sets of floating weir gates, and a flexible airbag is provided between the tank and the corresponding floating weir gate.

[0008] As a further aspect of the present invention: a lifting pipe connected to a temporary storage tank is vertically installed inside the separation tank, the lifting pipe passes through each set of separation components, a plurality of discharge holes are circumferentially opened at the upper end of the lifting pipe, and a conical cover is provided at the top of the lifting pipe.

[0009] As a further aspect of the present invention: the separating component includes a sleeve fitted onto the lifting pipe, a separating disc is provided at the top of the sleeve, a plurality of drainage holes are provided on the separating disc, and a plurality of support columns are connected between the sleeve and the separating disc.

[0010] As a further aspect of the present invention: a connecting pipe communicating with a separation tank is connected to one side of the fluidizing cylinder, a rotating shaft is rotatably installed on the top of the fluidizing cylinder, and a plurality of blades are arranged circumferentially on the rotating shaft, the blades being located at the junction of the fluidizing cylinder and the connecting pipe; The fluidizing cylinder has several sliding rods circumferentially arranged on its inner wall. A lifting plate is slidably sleeved on the sliding rods, and a spring is sleeved at the lower end of the sliding rods to abut against the lifting plate. A rotating sleeve is rotatably sleeved at the center of the lifting plate. Several paddles are circumferentially arranged on the rotating sleeve. Several axially extending limiting slides are arranged on the rotating shaft. The limiting slides are slidably connected to the rotating sleeve.

[0011] As a further embodiment of the present invention: a sealing chamber is provided at the top of the fluidizing cylinder, a filling pipe is connected to the upper end of the sealing chamber, the upper end of the rotating shaft is rotatably and sealingly connected to the sealing chamber, a hollow flow channel communicating with the interior of the sealing chamber is axially opened in the rotating shaft, a spray chamber is provided at the lower end of the hollow flow channel, and a plurality of spray grooves are circumferentially opened on the side wall of the spray chamber, the spray grooves being staggered with each blade.

[0012] As a further embodiment of the present invention: an annular baffle is provided on the inner side of the top of the separation tank, and an annular flushing groove is formed between the annular baffle and the treatment tank. A plurality of flushing holes communicating with the annular flushing groove are provided circumferentially on the side wall of the annular baffle, and a water inlet pipe communicating with the annular flushing groove is connected to one side of the treatment tank.

[0013] As a further aspect of the present invention: a discharge tank is provided on one side of the settling tank, a discharge pipe connected to the treatment tank is installed at one end of the discharge tank, and a plurality of slots connected to each sedimentation chamber are opened on one side of the discharge tank.

[0014] The beneficial effects of this invention are: This invention achieves fully automated processing from liquid inlet to sedimentation. The buffer pre-separation unit uses a tank and temporary storage tank to achieve initial sedimentation and separation of large particulate impurities in the waste liquid, providing pretreatment assurance for subsequent processing. In the oil-water separation unit, the multi-layer separation components in the separation tank form a step-by-step separation structure, effectively enhancing the oil-water separation efficiency and purity. The pulse fluidization treatment unit uses the combination of a fluidizing cylinder and a conical cylinder to achieve batch pulse fluidization treatment of the waste liquid, effectively removing fine suspended solids and some dissolved pollutants. In the static sedimentation unit, multiple sedimentation chambers achieve diversion sedimentation, further improving the solid-liquid separation effect. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the buffer pre-separation unit in this invention; Figure 4 This is a schematic diagram of the internal structure of the tank in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view at point B in the middle; Figure 7 This is a schematic diagram of the oil-water separation unit in this invention; Figure 8 This is a schematic diagram of the structure of the separator in this invention; Figure 9 This is a schematic diagram of the pulsed fluidization processing unit in this invention; Figure 10 for Figure 9 Enlarged view at point C; Figure 11 for Figure 9 Enlarged view at point D; Figure 12 This is a schematic diagram of the static sedimentation unit in this invention.

[0017] In the picture: 100. Buffer pre-separation unit; 110. Tank body; 111. Buffer tank; 112. Divider plate; 113. Pre-separation tank; 114. Gate; 115. Drive cylinder; 116. Flexible plate; 117. Pre-separation grid; 120. Temporary storage tank; 130. Inlet pipe; 140. Pump; 150. Pumping branch pipe; 160. Pumping main pipe; 170. Floating weir gate; 180. Flexible airbag; 190. Interception plate; 200. Oil-water separation unit; 210. Separator tank; 220. Lift pipe; 230. Drain hole; 240. Conical cover; 250. Separator component; 251. Sleeve; 252. Separator disc; 253. Support column; 254. Drain hole; 300. Pulse fluidized bed treatment unit; 310. Treatment tank; 311. Annular baffle; 312. Annular flushing tank; 313. Fluidizing hole; 314. Inlet pipe; 320. Fluidizing cylinder; 321. Slide rod; 322. Spring; 323. Filling pipe; 324. Sealing chamber; 330. Conical cylinder; 340. Discharge port; 350. Lifting plate; 360. Rotating sleeve; 361. Paddle; 370. Rotating shaft; 371. Limiting slide bar; 372. Hollow flow channel; 373. Spray chamber; 374. Spray groove; 375. Blade; 380. Connecting pipe; 400, Settling unit; 410, Settling tank; 420, Settling chamber; 430, Discharge tank; 440, Tank opening; 450, Discharge pipe. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Please see Figure 1 and Figure 2 This invention discloses an automated treatment device for chemical waste liquid, which is used for multi-stage treatment of chemical waste liquid, including a buffer pre-separation unit 100, an oil-water separation unit 200, a pulse fluidization treatment unit 300, and a settling unit 400. Please see Figure 3 The buffer pre-separation unit 100 includes a tank 110 and a temporary storage tank 120 that are interconnected, and one end of the tank 110 is connected to an inlet pipe 130. Please see Figure 7 The oil-water separation unit 200 is connected to the temporary storage tank 120 and includes a separation tank 210, in which a plurality of separation components 250 are distributed from top to bottom. Please see Figure 9 The pulse fluidized bed processing unit 300 includes a processing tank 310, a fluidizing cylinder 320 communicating with a separation tank 210 is provided inside the processing tank 310, a conical cylinder 330 is connected to the lower end of the fluidizing cylinder 320, and a discharge port 340 is provided at the bottom of the processing tank 310. Please see Figure 12 The settling unit 400 includes a settling tank 410 connected to the discharge port 340, and a plurality of settling chambers 420 are distributed in the settling tank 410. Specifically, the chemical waste liquid enters the tank 110 through the inlet pipe 130 for buffering and pre-separation of large particulate impurities. After pre-separation, the waste liquid passes through the tank 110 to the temporary storage tank 120 for temporary storage. Subsequently, the waste liquid in the temporary storage tank 120 is pumped into the separation tank 210 and lifted to the top of the separation tank 210 for release. Under the action of gravity, the waste liquid passes through each set of separation elements 250 in sequence, and the waste liquid is separated into oil and water in stages by each set of separation elements 250. Then, the waste liquid is pumped into the fluidizing cylinder 320 in the treatment tank 310, and the waste liquid is subjected to batch pulse fluidization treatment by the fluidizing cylinder 320. Finally, the waste liquid is discharged into each sedimentation chamber 420 of the settling tank 410 for settling.

[0020] It should be noted that this invention achieves fully automated processing from liquid inlet to sedimentation. The buffer pre-separation unit 100 achieves preliminary sedimentation and separation of large particulate impurities in the waste liquid through the tank 110 and the temporary storage tank 120, providing pretreatment assurance for subsequent processing. In the oil-water separation unit 200, the multi-layer separation components 250 in the separation tank 210 form a step-by-step separation structure, effectively enhancing the oil-water separation efficiency and purity. The pulse fluidization treatment unit 300 achieves batch pulse fluidization treatment of the waste liquid through the cooperation of the fluidizing cylinder 320 and the conical cylinder 330, effectively removing fine suspended solids and some dissolved pollutants. In the static sedimentation unit 400, multiple sedimentation chambers 420 achieve diversion sedimentation, further improving the solid-liquid separation effect.

[0021] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 5 The tank body 110 is provided with several rows of buffer tanks 111, and adjacent buffer tanks 111 are separated by partition plates 112. A pre-separation tank 113 is provided at one end of the tank body 110 near the liquid inlet pipe 130, and a gate plate 114 is provided between the pre-separation tank 113 and each buffer tank 111. Several liquid pumps 140 are installed at the bottom of the temporary storage tank 120. Each liquid pump 140 is connected to a liquid pump branch pipe 150 at its output end. All liquid pump branch pipes 150 are connected to a liquid pump main pipe 160. The liquid pump main pipe 160 is connected to the separation tank 210. Specifically, the waste liquid in the inlet pipe 130 is discharged into the pre-separation tank 113 for pre-separation. When the corresponding gate 114 is opened, the waste liquid can enter the corresponding buffer tank 111 for diversion and buffering. After pre-separation and buffering, the waste liquid flows into the temporary storage tank 120. The waste liquid in the temporary storage tank 120 is extracted by the liquid pump 140 and collected into the main liquid pumping pipe 160 through each liquid pumping branch pipe 150. Finally, the waste liquid enters the separation tank 210.

[0022] It should be noted that the waste liquid first enters the pre-separation tank 113 through the inlet pipe 130 for preliminary sedimentation and separation. Then, it can selectively enter different buffer tanks 111 through the gate 114 to achieve multi-channel diversion and buffering, effectively balancing water quality and quantity fluctuations and reducing the load on subsequent treatment units. The gate 114 can be opened and closed to flexibly adjust the flow direction and flow rate of the waste liquid to adapt to different incoming liquid conditions. Multiple buffer tanks 111 are arranged in parallel, which has the ability to process in parallel and clean alternately, ensuring the continuous and stable operation of the system. Multiple liquid pumps 140 are installed at the bottom of the temporary storage tank 120. They are collected into the main liquid pump 160 through the liquid pump branch pipe 150. This not only improves the reliability of waste liquid extraction, but also avoids system shutdown due to single pump failure. At the same time, it effectively prevents sediment from being resuspended or clogging the pump body. By integrating pre-separation, multi-stage buffering, and redundant pumping into a single unit, preliminary purification and stable delivery of waste liquid can be achieved within a limited space, providing continuous and stable liquid inlet conditions for the subsequent oil-water separation unit 200.

[0023] Further, please refer to Figure 5 A flexible plate 116 is movably disposed in the pre-separation groove 113, and a drive cylinder 115 for driving the flexible plate 116 is installed above the pre-separation groove 113. A pre-separation grid 117 is embedded in the flexible plate 116. Specifically, after the waste liquid in the inlet pipe 130 flows into the pre-separation tank 113, it is initially intercepted by the pre-separation grid 117 to remove large particulate impurities. Then, the waste liquid passes through the gate 114 from the bottom opening of the pre-separation grid 117 and enters the corresponding buffer tank 111. During the pre-separation process, the flexible plate 116 is driven to swing up and down by the drive cylinder 115, which in turn drives the pre-separation grid 117 to shake synchronously, thereby creating a turbulence effect on the waste liquid and improving the interception effect.

[0024] It should be noted that by driving the flexible plate 116 and the pre-separation grid 117 to reciprocate at high frequency through the drive cylinder 115, a continuous turbulence is generated on the inflowing waste liquid, which effectively prevents impurities from accumulating and clogging on the grid surface, and improves the efficiency and stability of intercepting large particles of impurities. The pre-separation grid 117 enhances the contact and shearing effect with the waste liquid during the shaking, which can not only intercept a wider range of particles, but also promote the flocculation and capture of fine particles, thereby improving the initial solid-liquid separation effect.

[0025] Furthermore, please refer to Figure 6 Two sets of floating weir gates 170 are symmetrically arranged at one end of the tank 110 near the temporary storage tank 120. An intercepting plate 190 is installed between the two sets of floating weir gates 170. A flexible airbag 180 is provided between the tank 110 and the corresponding floating weir gate 170. Specifically, the waste liquid in the buffer tank 111 is discharged between two sets of floating weir gates 170. The waste liquid is filtered and intercepted by the interception plate 190. As the driving cylinder 115 drives the flexible plate 116 to shake periodically, the waste liquid will generate periodic fluctuations. When the fluctuating waste liquid passes through the channel between the two sets of floating weir gates 170, it can generate periodic impacts on the floating weir gates 170 on both sides. With the adaptive elastic deformation of the corresponding flexible airbag 180, the floating weir gates 170 on both sides will generate a periodic opening and closing effect to achieve dynamic interception of waste liquid.

[0026] It should be noted that the periodic fluctuations in waste liquid caused by the operation of the upstream drive cylinder 115 are used as a power source to drive the floating weir gates 170 on both sides to open and close periodically, thereby realizing the dynamic and automated interception function. With the cooperation of the flexible airbag 180, the floating weir gate 170 can adaptively respond to the changes in the strength of the water flow impact and automatically adjust the opening and closing amplitude and frequency. This dynamic interception mode effectively prevents impurities from rigidly adhering to the surface of the interception plate 190, greatly reduces the clogging phenomenon, and ensures the continuous stability of the filtration effect. By deeply integrating the interception function with the characteristics of fluid fluctuations, and through the integrated design of the floating weir gate 170, flexible airbag 180 and interception plate 190, the system achieves efficient utilization of internal energy and functional synergy. This effectively alleviates the problems of traditional fixed weir gates being easily jammed and requiring frequent cleaning, reduces maintenance interventions to the system, and improves the continuity and reliability of equipment operation. It is especially suitable for complex working conditions with large fluctuations in impurity load.

[0027] In yet another embodiment, please refer to Figure 7 The separation tank 210 is vertically installed with a lifting pipe 220 that communicates with the temporary storage tank 120. The lifting pipe 220 passes through each set of separation components 250. The upper end of the lifting pipe 220 is provided with a plurality of discharge holes 230 in the circumferential direction. The top of the lifting pipe 220 is provided with a conical cover 240. Specifically, the waste liquid is pumped to the top of the riser pipe 220 and discharged to the outside through the discharge hole 230. The discharged waste liquid is blocked by the conical cover 240, so that the waste liquid falls onto the lower separator 250. The waste liquid is separated into oil and water in stages by multiple sets of separators 250 from top to bottom.

[0028] It should be noted that the waste liquid is transported to the top of the separation tank 210 through the riser pipe 220, and is evenly discharged through the circumferentially distributed discharge holes 230. The conical cover 240 effectively blocks and guides the flow, ensuring that the waste liquid is stably and evenly distributed on the surface of the top separation component 250, avoiding the impact of the central high-speed jet on the separation material, and creating ideal hydraulic conditions for subsequent stage separation. Utilizing gravity, the waste liquid flows from top to bottom through multiple layers of separator 250, achieving multiple coalescence and separation of the oil-water mixture. This multi-stage series separation mode extends the effective separation path, overcomes the shortcomings of single-stage separation such as easy short-circuiting and low efficiency, and significantly improves separation purity and processing load.

[0029] Further, please refer to Figure 8 The separating component 250 includes a sleeve 251 sleeved on the lifting pipe 220, a separating disk 252 is provided on the top of the sleeve 251, a plurality of drainage holes 254 are provided on the separating disk 252, and a plurality of support columns 253 are connected between the sleeve 251 and the separating disk 252. Specifically, the waste liquid falls onto the separation disc 252, where the oil stains in the waste liquid are adsorbed step by step through each separation disc 252, and then the waste liquid flows out downward through the drain hole 254.

[0030] It should be noted that each separation element 250 is sequentially sleeved onto the riser pipe 220 via sleeve 251, forming a compact vertical stacked structure. The waste liquid flows from top to bottom through each separation disc 252, and selectively adsorbs and coalesces the dispersed oil droplets through its surface characteristics (with oleophilic and hydrophobic materials), thereby achieving step-by-step deep separation of oil and water, improving separation efficiency and effluent quality. The support column 253 ensures a firm connection and reasonable spacing between the separation disk 252 and the sleeve 251, providing ample space for the waste liquid to flow down and the oil phase to accumulate; the reasonable distribution of the drain holes 254 ensures that the aqueous phase can enter the next stage unimpeded, while preventing the oil phase from being carried out prematurely, thus optimizing the separation path. The surface of the separator 252 can be coated with special modified materials or microstructure coatings to further enhance its ability to capture oil droplets.

[0031] In further embodiments, please refer to Figure 9 , Figure 10 and Figure 11 The fluidizing cylinder 320 is connected to a connecting pipe 380 that communicates with the separation tank 210 on one side. A rotating shaft 370 is rotatably installed on the top of the fluidizing cylinder 320. Several blades 375 are arranged circumferentially on the rotating shaft 370. The blades 375 are located at the junction of the fluidizing cylinder 320 and the connecting pipe 380. The fluidizing cylinder 320 has several sliding rods 321 circumferentially arranged on its inner wall. A lifting plate 350 is slidably sleeved on the sliding rods 321. A spring 322 is sleeved at the lower end of the sliding rods 321 and abuts against the lifting plate 350. A rotating sleeve 360 ​​is rotatably sleeved at the center of the lifting plate 350. Several paddles 361 are circumferentially arranged on the rotating sleeve 360. Several axially extending limiting slides 371 are arranged on the rotating shaft 370. The limiting slides 371 are slidably connected to the rotating sleeve 360. Specifically, the waste liquid at the bottom of the separation tank 210 is pumped into the fluidizing cylinder 320 through the connecting pipe 380 by the pump body built into the separation tank 210 (not shown in the figure), and then the waste liquid falls onto the lifting plate 350. In the initial state, due to the elastic force of the spring 322, the lifting plate 350 is located at the upper end of the slide bar 321, and the lifting plate 350 is located inside the fluidizing cylinder 320. During the process of the waste liquid entering the fluidizing cylinder 320, it impacts the blades 375, thereby driving the rotating shaft 370 to rotate. Due to the axial sliding fit between the limiting slide bar 371 and the rotating sleeve 360, each paddle 361 is driven to rotate synchronously, so as to realize the circumferential agitation of the waste liquid above the lifting plate 350, so as to promote the waste liquid to fully and evenly contact the treatment liquid in the fluidizing cylinder 320, and improve the fluidization treatment effect of the waste liquid. As the waste liquid above the lifting plate 350 increases, the pressure applied to the lifting plate 350 also increases, thereby continuously compressing the spring 322. The lifting plate 350 gradually slides down along the slide bar 321 until the lifting plate 350 slides down to the area of ​​the conical cylinder 330. Due to the gap between the outer edge of the lifting plate 350 and the inner wall of the conical cylinder 330, the waste liquid above the lifting plate 350 is discharged downward. Subsequently, the lifting plate 350 gradually slides upward and resets under the elastic force of the spring 322, and the connecting pipe 380 continues to discharge waste liquid above the lifting plate 350 for the next batch of waste liquid fluidization treatment. This process is repeated to achieve batch fluidization and periodic discharge of waste liquid.

[0032] It should be noted that the fluid kinetic energy of the pumped waste liquid impacts the blades 375, driving the rotating shaft 370 to rotate. The rotational motion is transmitted to the paddle 361 through the sliding engagement of the limiting slide bar 371 and the rotating sleeve 360, thereby achieving circumferential agitation of the waste liquid. The lifting plate 350, spring 322, and conical cylinder 330 constitute an automatic pressure valve mechanism. The waste liquid is temporarily stored and agitated on the lifting plate 350, realizing batch fluidization and reaction. When the liquid weight overcomes the elastic force of spring 322, the waste liquid is discharged into the next stage, forming a pulse flow field. This periodic water filling, mixing, and discharge pulse process greatly enhances the contact efficiency and mass transfer effect between the waste liquid and the treatment medium (such as adsorbent, catalyst, etc.), avoiding short-circuiting and dead zones.

[0033] Further, please refer to Figure 9 and Figure 11For the supply of the treatment fluid, a sealing chamber 324 is provided at the top of the fluidizing cylinder 320. A filling pipe 323 is connected to the upper end of the sealing chamber 324. The upper end of the rotating shaft 370 is rotatably and sealingly connected to the sealing chamber 324. A hollow flow channel 372 communicating with the interior of the sealing chamber 324 is axially opened inside the rotating shaft 370. A spray chamber 373 is provided at the lower end of the hollow flow channel 372. A plurality of spray grooves 374 are circumferentially opened on the side wall of the spray chamber 373. The spray grooves 374 are staggered with each blade 375. Specifically, external treatment fluid is injected into the sealed chamber 324 through the injection pipe 323. At any time, the treatment fluid enters the spray chamber 373 through the hollow flow channel 372 and is sprayed out circumferentially from each spray slot 374. The upper end of the rotating shaft 370 is sealed and rotatably connected to the spray slot 374, so as not to affect the uninterrupted supply of treatment fluid to the spray chamber 373 during the rotation of the rotating shaft 370. At the same time, the waste liquid sprayed out at the connecting pipe 380 impacts the blade 375 to drive the rotating shaft 370 to rotate, and the treatment fluid is sprayed out from each spray slot 374 and fully contacts the waste liquid. During the rotation of the blade 375, the treatment fluid and waste liquid can be dispersed, further promoting the full fusion of waste liquid and treatment fluid.

[0034] It should be noted that the treatment liquid enters the sealed chamber 324 through the injection pipe 323, is transported to the high-speed rotating spray chamber 373 through the hollow flow channel 372, and is finally sprayed out evenly at a certain pressure through the circumferential spray groove 374. This allows the treatment liquid (such as coagulant, oxidant, etc.) to be directly and evenly dispersed into the waste liquid in the stirring core area of ​​the fluidizing cylinder 320, realizing the overlap between the injection point and the strongest turbulence zone, ensuring instantaneous and sufficient mass transfer and mixing reaction, and improving treatment efficiency and reagent utilization. Utilizing the kinetic energy of the waste liquid, the impact blades 375 drive the rotating shaft 370 to rotate, achieving agitation. Simultaneously, the spray chamber 373 rotates, achieving circumferential spraying of the treated liquid. The treated liquid delivery channel is built into the rotating shaft 370 system, avoiding interference from complex external pipelines on the rotational motion. The upper end of the rotating shaft 370 is connected to the sealing chamber 324 by a rotating seal, ensuring the sealing of the continuous supply of treated liquid. This allows the treated liquid to achieve the most thorough premixing with the waste liquid in each batch, creating optimal conditions for the subsequent fluidization reaction on the lifting plate 350. This, in turn, enhances the overall removal effect of the pulse fluidization treatment unit 300 on pollutants (such as recalcitrant organic matter and heavy metals).

[0035] Furthermore, please refer to Figure 9An annular baffle 311 is provided on the inner side of the top of the separation tank 210. An annular flushing groove 312 is formed between the annular baffle 311 and the treatment tank 310. A plurality of flushing holes 313 communicating with the annular flushing groove 312 are provided on the side wall of the annular baffle 311. A water inlet pipe 314 communicating with the annular flushing groove 312 is connected to one side of the treatment tank 310. Specifically, after the waste liquid is treated, cleaning water is introduced into the annular flushing tank 312 through the water inlet pipe 314. The cleaning water is sprayed out in a circular direction through the flushing hole 313 and cross-flows, thereby flushing the inner wall and bottom conical surface of the treatment tank 310. The flushed wastewater is collected at the bottom of the treatment tank 310 and discharged from the discharge port 340.

[0036] It should be noted that by connecting the cleaning water through the water inlet pipe 314, the rinsing operation of the entire inner wall and conical bottom of the treatment tank 310 can be completed automatically, realizing the automation of the cleaning process and completely avoiding the high risk, high labor intensity and low efficiency problems of traditional manual tank cleaning. The circumferentially distributed flushing holes 313 allow the cleaning water to be sprayed out in multiple streams in a circular pattern, and they cross and converge in the central area of ​​the tank to form a three-dimensional flushing network covering the entire cross-section of the tank. This ensures that the flushing water can effectively reach every surface inside the tank, especially the inclined inner wall of the conical cylinder 330, eliminating cleaning dead corners and the risk of sludge deposition. Regular and thorough automatic cleaning can effectively prevent scaling and sludge caking on the inner wall of the treatment tank 310, maintain the effective volume and flow state of the treatment tank 310, and ensure the long-term stable operation efficiency and treatment effect stability of the pulse fluidized treatment unit 300, fundamentally reducing the frequency of equipment maintenance and long-term operating costs.

[0037] Additionally, please see Figure 12 The settling tank 410 is provided with a discharge tank 430 on one side. A discharge pipe 450 connected to the treatment tank 310 is installed at one end of the discharge tank 430. Several slots 440 connected to each sedimentation chamber 420 are opened on one side of the discharge tank 430. Specifically, the waste liquid in the treatment tank 310 is discharged into the discharge tank 430 through the discharge pipe 450, and then the waste liquid is discharged into each sedimentation chamber 420 through the corresponding tank opening 440 for static sedimentation.

[0038] It should be noted that the waste liquid is evenly distributed to each independent sedimentation chamber 420 through multiple outlets 440 via the discharge tank 430, realizing multi-channel parallel treatment, effectively dispersing the hydraulic load and pollution load, avoiding the problems of short flow and density flow commonly found in single large-capacity sedimentation tanks, providing a stable and efficient sedimentation environment for suspended solids, shortening the settling time and improving the quality of effluent. Multiple sedimentation chambers 420 are arranged in parallel to form a modular sedimentation unit, which allows the system to isolate, empty and maintain one or more sedimentation chambers 420 during operation without interrupting the continuous operation of the entire unit. This enhances the flexibility of operation and the maintainability of the equipment, and ensures the continuity of the production process. The combination of discharge tank 430 and multiple outlets 440 plays a good role in water distribution, ensuring that the waste liquid can enter each sedimentation chamber 420 smoothly and evenly, avoiding the impact and interference of excessive local flow velocity on the sedimentation process, and creating ideal hydraulic conditions for solid-liquid separation.

[0039] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An automated treatment device for chemical waste liquid, used for multi-stage treatment of chemical waste liquid, characterized in that, include: The buffer pre-separation unit (100) includes a tank (110) and a temporary storage tank (120) that are connected to each other, and one end of the tank (110) is connected to an inlet pipe (130). An oil-water separation unit (200) is connected to a temporary storage tank (120) and includes a separation tank (210) in which a plurality of separation components (250) are distributed from top to bottom. A pulsed fluidized bed processing unit (300) includes a processing tank (310), a fluidizing cylinder (320) communicating with a separation tank (210) is provided inside the processing tank (310), a conical cylinder (330) is connected to the lower end of the fluidizing cylinder (320), and a discharge port (340) is provided at the bottom of the processing tank (310). A settling unit (400) includes a settling tank (410) connected to a discharge port (340), wherein a plurality of settling chambers (420) are distributed in the settling tank (410). The fluidizing cylinder (320) is connected to a connecting pipe (380) that communicates with the separation tank (210) on one side. A rotating shaft (370) is rotatably installed on the top of the fluidizing cylinder (320). Several blades (375) are arranged circumferentially on the rotating shaft (370). The blades (375) are located at the junction of the fluidizing cylinder (320) and the connecting pipe (380). The fluidizing cylinder (320) has several sliding rods (321) circumferentially arranged on its inner wall. A lifting plate (350) is slidably sleeved on the sliding rods (321). A spring (322) is sleeved at the lower end of the sliding rods (321) and abuts against the lifting plate (350). A rotating sleeve (360) is rotatably sleeved at the center of the lifting plate (350). Several paddles (361) are circumferentially arranged on the rotating sleeve (360). Several axially extending limiting slides (371) are arranged on the rotating shaft (370). The limiting slides (371) are slidably connected to the rotating sleeve (360). The fluidizing cylinder (320) is provided with a sealing chamber (324) at the top. The upper end of the sealing chamber (324) is connected to a filling pipe (323). The upper end of the rotating shaft (370) is rotatably and sealedly connected to the sealing chamber (324). A hollow flow channel (372) communicating with the interior of the sealing chamber (324) is axially opened in the rotating shaft (370). A spray chamber (373) is provided at the lower end of the hollow flow channel (372). Several spray grooves (374) are circumferentially opened on the side wall of the spray chamber (373). The spray grooves (374) are staggered with each blade (375).

2. The automated treatment device for chemical waste liquid according to claim 1, characterized in that, The tank (110) is provided with several rows of buffer tanks (111), and adjacent buffer tanks (111) are separated by partition plates (112). A pre-separation tank (113) is provided at one end of the tank (110) near the liquid inlet pipe (130), and a gate plate (114) is provided between the pre-separation tank (113) and each buffer tank (111). The bottom of the temporary storage tank (120) is equipped with several liquid pumps (140), and each liquid pump (140) is connected to a liquid pump branch pipe (150) at its output end. All liquid pump branch pipes (150) are connected to a liquid pump main pipe (160), which is connected to the separation tank (210).

3. The automated treatment device for chemical waste liquid according to claim 2, characterized in that, A flexible plate (116) is movably disposed in the pre-separation groove (113), and a drive cylinder (115) for driving the flexible plate (116) is installed above the pre-separation groove (113). A pre-separation grid (117) is embedded in the flexible plate (116).

4. The automated treatment device for chemical waste liquid according to claim 3, characterized in that, Two sets of floating weir gates (170) are symmetrically arranged at one end of the tank (110) near the temporary storage tank (120). An intercepting plate (190) is installed between the two sets of floating weir gates (170). Flexible airbags (180) are provided between the tank (110) and the corresponding floating weir gates (170).

5. The automated treatment device for chemical waste liquid according to claim 1, characterized in that, The separation tank (210) is vertically installed with a lifting pipe (220) that communicates with the temporary storage tank (120). The lifting pipe (220) passes through each set of separation components (250). The upper end of the lifting pipe (220) is provided with several discharge holes (230) in the circumferential direction. The top of the lifting pipe (220) is provided with a conical cover (240).

6. The automated treatment device for chemical waste liquid according to claim 5, characterized in that, The separating component (250) includes a sleeve (251) fitted onto the lifting pipe (220), a separating disc (252) is provided on the top of the sleeve (251), a plurality of drain holes (254) are provided on the separating disc (252), and a plurality of support columns (253) are connected between the sleeve (251) and the separating disc (252).

7. The automated treatment device for chemical waste liquid according to claim 1, characterized in that, An annular baffle (311) is provided on the inner side of the top of the separation tank (210). An annular flushing groove (312) is formed between the annular baffle (311) and the treatment tank (310). A plurality of flushing holes (313) communicating with the annular flushing groove (312) are provided on the side wall of the annular baffle (311). A water inlet pipe (314) communicating with the annular flushing groove (312) is connected to one side of the treatment tank (310).

8. An automated treatment device for chemical waste liquid according to claim 1, characterized in that, A discharge trough (430) is provided on one side of the settling tank (410). A discharge pipe (450) connected to the treatment tank (310) is installed at one end of the discharge trough (430). Several slots (440) connected to each sedimentation chamber (420) are opened on one side of the discharge trough (430).

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