Automatic treatment device for chemical waste liquid

Abstract

The invention relates to the technical field of waste liquid multi-stage treatment, 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 settlement unit, the buffer pre-separation unit is used for realizing primary sedimentation of waste liquid and separation of large-particle impurities through a tank body and a temporary storage tank, so that a pretreatment guarantee is provided for subsequent treatment; in the oil-water separation unit, multiple layers of separation pieces in a separation tank form a step-by-step separation structure, so that the oil-water separation efficiency and purity are effectively enhanced; the pulse fluidization treatment unit is used for realizing batch type pulse fluidization treatment on the waste liquid through matching of a fluidization barrel and a conical barrel, and fine suspended matters and part of soluble pollutants are effectively removed; a plurality of precipitation cavities in the static precipitation unit realize split-flow precipitation, so that the solid-liquid separation effect is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of multi-stage treatment of waste liquid, and more particularly to an automatic treatment device for chemical waste liquid. BACKGROUND

[0002] Traditional chemical waste liquid treatment often adopts a multi-unit dispersed operation mode, wherein a simple grid or a sedimentation tank is often used in a pretreatment unit, which is easy to be blocked and needs frequent cleaning and maintenance, has poor impact load resistance, and is difficult to cope with water quality and quantity fluctuations; an oil-water separation link usually relies on a single separator or static stratification, and the separation efficiency is limited, especially for emulsified oil or fine oil droplets; a deep treatment unit often adopts continuous flow stirring reaction, and has short flow and dead zone phenomenon, and the mixing mass transfer effect is not ideal. SUMMARY

[0003] In order to overcome the above technical problems, the present application provides an automatic treatment device for chemical waste liquid.

[0004] The object of the present application can be achieved by the following technical solutions. An automatic treatment device for chemical waste liquid, comprising: a buffer pre-separation unit, comprising a tank body and a temporary storage tank in communication with each other, and an inlet pipe connected to one end of the tank body; an oil-water separation unit connected to the temporary storage tank, comprising a separation tank, and a plurality of separation pieces distributed from top to bottom in the separation tank; a pulse fluidization treatment unit, comprising a treatment tank, a fluidization cylinder in communication with the separation tank arranged in the treatment tank, a conical cylinder connected to the lower end of the fluidization cylinder, and a discharge port arranged at the bottom of the treatment tank; a static sedimentation unit, comprising a static tank in communication with the discharge port, and a plurality of sedimentation cavities distributed in the static tank.

[0005] As a further scheme of the present application, a plurality of buffer tanks are arranged in the tank body, adjacent buffer tanks are separated by a partition plate, a pre-separation tank is arranged at one end of the tank body close to the inlet pipe, and a gate is arranged between the pre-separation tank and each buffer tank. A plurality of liquid pumping pumps are mounted at the bottom of the temporary storage tank, each liquid pumping pump output end is connected to a liquid pumping branch pipe, and the liquid pumping branch pipes are collectively connected to a liquid pumping main pipe in communication with the separation tank.

[0006] As a further scheme of the present application, a flexible plate is movably arranged in the pre-separation tank, a driving air cylinder for driving the flexible plate is mounted above the pre-separation tank, and a pre-separation grid is embedded in the flexible plate.

[0007] As a further scheme of the present application, two groups of floating weir gates are symmetrically arranged at one end of the groove body close to the temporary storage tank, and an intercepting piece is arranged between the two groups of floating weir gates.

[0008] As a further scheme of the present application, a lifting pipe in communication with the temporary storage tank is vertically arranged in the separation tank, the lifting pipe penetrates through each group of separation pieces, a plurality of discharge holes are formed in the circumferential direction of the upper end of the lifting pipe, and a conical cover is arranged on the top of the lifting pipe.

[0009] As a further scheme of the present application, the separation piece comprises a sleeve arranged on the lifting pipe, a separation disc is arranged on the top of the sleeve, a plurality of flow discharge holes are formed in the separation disc, and a plurality of support columns are connected between the sleeve and the separation disc.

[0010] As a further scheme of the present application, a connecting pipe in communication with the separation tank is connected to one side of the fluidization cylinder, a rotating shaft is rotatably arranged on the top of the fluidization cylinder, a plurality of blades are arranged in the circumferential direction of the rotating shaft, and the blades are located at the joint between the fluidization cylinder and the connecting pipe. A plurality of sliding rods are arranged in the circumferential direction of the inner wall of the fluidization cylinder, a lifting disc is slidably arranged on the sliding rods, a spring abutting against the lifting disc is arranged on the lower end of the sliding rods, a rotating sleeve is rotatably arranged at the center of the lifting disc, a plurality of pokers are arranged in the circumferential direction of the rotating sleeve, a plurality of limiting sliding strips extending in the axial direction are arranged on the rotating shaft, and the limiting sliding strips are slidably connected with the rotating sleeve.

[0011] As a further scheme of the present application, a sealing bin is arranged on the top of the fluidization cylinder, a filling pipe is connected to the upper end of the sealing bin, the upper end of the rotating shaft is rotatably and sealingly connected with the sealing bin, a hollow flow channel in communication with the inside of the sealing bin is formed in the axial direction of the rotating shaft, a jet cavity is arranged at the lower end of the hollow flow channel, a plurality of jet grooves are formed in the circumferential direction of the side wall of the jet cavity, and the jet grooves are staggered with the blades.

[0012] As a further scheme of the present application, an annular partition plate is arranged on the inner side of the top of the separation tank, an annular flushing groove is formed between the annular partition plate and the treatment tank, a plurality of flushing holes in communication with the annular flushing groove are formed in the circumferential direction of the side wall of the annular partition plate, and a water inlet pipe penetrating through the annular flushing groove is connected to one side of the treatment tank.

[0013] As a further scheme of the present application, a discharge groove is arranged on one side of the standing groove, a discharge pipe in communication with the treatment tank is arranged on one end of the discharge groove, and a plurality of groove openings in communication with the respective sedimentation cavities are formed on one side of the discharge groove.

[0014] The present application has the following beneficial effects: 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, separation tank; 220, riser; 230, discharge hole; 240, conical cover; 250, separation piece; 251, sleeve; 252, separation disc; 253, support column; 254, flow hole; 300, pulse fluidization treatment unit; 310, treatment tank; 311, annular partition; 312, annular flushing groove; 313, flushing hole; 314, water inlet pipe; 320, fluidization cylinder; 321, sliding rod; 322, spring; 323, filling pipe; 324, sealing bin; 330, conical cylinder; 340, discharge port; 350, lifting disc; 360, rotating sleeve; 361, shifting piece; 370, rotating shaft; 371, limiting slide; 372, hollow flow channel; 373, injection cavity; 374, injection groove; 375, blade; 380, connecting pipe; 400, static precipitation unit; 410, static tank; 420, precipitation cavity; 430, discharge groove; 440, slot; 450, discharge pipe. DETAILED DESCRIPTION

[0018] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is merely meant to provide a better understanding of the subject matter described herein and can be changed in function and arrangement without departing from the scope of the disclosure. Various processes or components can be omitted, substituted, or added according to desired implementations. Additionally, features described with respect to some examples can be combined in other examples.

[0019] Referring to Figure 1 and Figure 2 , the present disclosure discloses an automatic treatment device for chemical waste liquid, which is used for multi-stage treatment of chemical waste liquid and includes a buffer pre-separation unit 100, an oil-water separation unit 200, a pulse fluidization treatment unit 300, and a static precipitation unit 400. Referring to Figure 3 , the buffer pre-separation unit 100 includes a tank body 110 and a temporary storage tank 120 that are in communication with each other, and the tank body 110 is connected with a liquid inlet pipe 130 at one end. Referring to Figure 7 , the oil-water separation unit 200 is connected with the temporary storage tank 120 and includes a separation tank 210, and the separation tank 210 has a plurality of separation pieces 250 distributed from top to bottom. Referring to Figure 9 , the pulse fluidization treatment unit 300 includes a treatment tank 310, and the treatment tank 310 is provided with a fluidization cylinder 320 that is in communication with the separation tank 210, the lower end of the fluidization cylinder 320 is connected with a conical cylinder 330, and the bottom of the treatment tank 310 is provided with a discharge port 340. Referring toFigure 12 The static settling unit 400 comprises a static settling tank 410 in communication with the discharge port 340, and a plurality of settling cavities 420 are distributed in the static settling tank 410; Specifically, the chemical waste liquid enters the tank body 110 through the liquid inlet pipe 130 for buffering and pre-separation of large-particle impurities, and the waste liquid after pre-separation treatment reaches the temporary storage tank 120 for temporary storage; then 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, and the waste liquid sequentially passes through each group of separation pieces 250 under the action of gravity, and the waste liquid is separated by each group of separation pieces 250; then the waste liquid is pumped into the fluidized cylinder 320 in the treatment tank 310, and the waste liquid is treated by batch pulse fluidization through the fluidized cylinder 320; finally, the waste liquid is discharged into each settling cavity 420 of the static settling tank 410 for static settling.

[0020] It should be noted that the present application realizes full-process automatic treatment from liquid inlet to settling, and the buffering and pre-separation unit 100 realizes preliminary settling and separation of large-particle impurities of the waste liquid through the tank body 110 and the temporary storage tank 120, thereby providing pre-treatment guarantee for subsequent treatment; in the oil-water separation unit 200, the multi-layer separation pieces 250 in the separation tank 210 form a step-by-step separation structure, which effectively enhances the oil-water separation efficiency and purity; the pulse fluidization treatment unit 300 realizes batch pulse fluidization treatment of the waste liquid through the cooperation of the fluidized cylinder 320 and the conical cylinder 330, thereby effectively removing fine suspended solids and part of the dissolved pollutants; and the multi-settling cavities 420 in the static settling unit 400 realize flow separation, thereby further improving the solid-liquid separation effect.

[0021] In an embodiment, referring to Figure 3 , Figure 4 and Figure 5 , a plurality of buffer tanks 111 are arranged in the tank body 110, adjacent buffer tanks 111 are separated by a partition plate 112, one end of the tank body 110 close to the liquid inlet pipe 130 is provided with a pre-separation tank 113, and a gate plate 114 is arranged between the pre-separation tank 113 and each buffer tank 111; A plurality of liquid pumping pumps 140 are mounted at the bottom of the temporary storage tank 120, each liquid pumping pump 140 is connected with a liquid pumping branch pipe 150, and the liquid pumping branch pipes 150 are jointly connected with a liquid pumping main pipe 160, and the liquid pumping main pipe 160 is in communication with the separation tank 210; Specifically, the waste liquid in the liquid inlet pipe 130 is discharged into the pre-separation tank 113 for pre-separation, the corresponding gate plate 114 is opened, the waste liquid can enter the corresponding buffer tank 111 for flow buffering, the waste liquid after pre-separation and buffering treatment flows into the temporary storage tank 120, the waste liquid in the temporary storage tank 120 is pumped out by the liquid pumping pump 140 and is collected into the liquid pumping main pipe 160 through the liquid pumping branch pipes 150, and 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 liquid inlet pipe 130 for preliminary settling separation, and then selectively enters different buffer tanks 111 through the gate plate 114 to realize multi-channel diversion and buffering, effectively balance the water quality and quantity fluctuations, and reduce the load of the subsequent treatment unit; the opening and closing of the gate plate 114 can flexibly adjust the flow direction and flow rate of the waste liquid to adapt to different incoming liquid conditions; the multiple buffer tanks 111 are arranged in parallel and have parallel processing and alternating cleaning capabilities to ensure continuous and stable operation of the system; The bottom of the temporary storage tank 120 is provided with multiple liquid pumping pumps 140, which are collected through liquid pumping branch pipes 150 to a liquid pumping main pipe 160, which not only improves the reliability of waste liquid pumping, but also avoids system downtime caused by single pump failure, while effectively preventing the re-suspension of sediments or the blockage of the pump body; Integrating pre-separation, multi-stage buffering and redundant pumping in the same unit, the preliminary purification and stable transportation of waste liquid are realized in a limited space, providing continuous and stable liquid conditions for the subsequent oil-water separation unit 200.

[0023] Further, please refer to Figure 5 , the pre-separation tank 113 movably sets a flexible plate 116, the pre-separation tank 113 is provided with a driving air cylinder 115 above for driving the flexible plate 116, and the flexible plate 116 is embedded with a pre-separation grid 117; Specifically, after the waste liquid in the liquid inlet pipe 130 flows into the pre-separation tank 113, the large particle impurities in the waste liquid are preliminarily intercepted by the pre-separation grid 117, and then the waste liquid passes through the gate plate 114 from the bottom opening of the pre-separation grid 117 into the corresponding buffer tank 111; During the pre-separation process, the flexible plate 116 and the pre-separation grid 117 are driven by the driving air cylinder 115 to reciprocate up and down, thereby driving the pre-separation grid 117 to swing synchronously, thereby generating a turbulent flow effect on the waste liquid to improve the interception effect.

[0024] It should be noted that the flexible plate 116 and the pre-separation grid 117 are driven by the driving air cylinder 115 to reciprocate at high frequency, which produces a continuous turbulent flow to the inflowing waste liquid, effectively avoiding the accumulation and blockage of impurities on the grid surface, improving the efficiency and stability of large particle impurity interception; the pre-separation grid 117 enhances the contact and shearing action with the waste liquid during the swinging, which not only can intercept a larger range of particulate matter, but also can promote the flocculation and capture of fine particles, improving the preliminary solid-liquid separation effect.

[0025] Further, please refer to Figure 6 , the tank body 110 is symmetrically provided with two groups of floating weir gates 170 near one end of the temporary storage tank 120, and an intercepting piece 190 is installed between the two groups of floating weir gates 170; a flexible air bag 180 is arranged between the tank body 110 and the corresponding floating weir gate 170; Specifically, the waste liquid in the buffer tank 111 is discharged between the two groups of floating weir doors 170, and the waste liquid is filtered and intercepted again by the intercepting piece 190. Due to the periodic shaking of the flexible plate 116 driven by the driving cylinder 115, the waste liquid is periodically fluctuated. When the fluctuated waste liquid passes through the channel between the two groups of floating weir doors 170, the two floating weir doors 170 on both sides can be periodically impacted, and the self-adaptive elastic deformation of the corresponding flexible air bag 180 can be matched, so that the two floating weir doors 170 on both sides can be periodically opened and closed to realize dynamic interception of the waste liquid.

[0026] It should be noted that the periodic fluctuation of the waste liquid caused by the operation of the upstream driving cylinder 115 is used as a power source to drive the two floating weir doors 170 to periodically open and close, so as to realize the dynamic and automatic interception function. The floating weir door 170 can self-adaptively respond to the strength change of the water flow impact and automatically adjust the opening and closing amplitude and frequency with the cooperation of the flexible air bag 180. This dynamic interception mode effectively prevents the rigid attachment of impurities on the surface of the intercepting piece 190, greatly reduces the clogging phenomenon, and ensures the continuous stability of the filtering effect. The interception function is deeply combined with the fluid fluctuation characteristics, and the floating weir door 170, the flexible air bag 180 and the intercepting piece 190 are designed in an integrated manner, so as to realize efficient utilization of internal energy and function cooperation of the system, effectively alleviate the problem that the traditional fixed weir door is easily blocked and needs to be cleaned frequently, reduce the maintenance intervention of the system, improve the continuity and reliability of the equipment operation, and is especially suitable for complex working conditions with large impurity load fluctuation.

[0027] In another embodiment, please refer to Figure 7 The separation tank 210 is vertically installed with a lifting pipe 220 in communication with the temporary storage tank 120. The lifting pipe 220 penetrates each group of separation pieces 250. A plurality of discharge holes 230 are arranged on the upper end of the lifting pipe 220 in a circumferential direction. A conical cover 240 is arranged on the top of the lifting pipe 220. Specifically, the waste liquid is pumped to the top of the lifting pipe 220 and discharged outward from the discharge holes 230. The discharged waste liquid is blocked by the conical cover 240, so that the waste liquid falls on the lower separation piece 250. The waste liquid is separated by the upper and lower separation pieces 250.

[0028] It should be noted that the waste liquid is transported to the top end of the separation tank 210 through the lifting pipe 220, uniformly discharged through the circumferentially distributed discharge holes 230, and effectively blocked and guided by the conical cover 240, so as to ensure that the waste liquid is stably and uniformly distributed on the surface of the top separation piece 250, and the impact of the central high-speed jet flow on the separation material is avoided, which creates ideal hydraulic conditions for subsequent step-by-step separation. By gravity, the waste liquid flows through the multi-layer separation piece 250 from top to bottom, realizing multiple coalescence and separation of the oil-water mixture. This multi-stage separation mode prolongs the effective separation path, overcomes the short circuit and low efficiency of single-stage separation, and greatly improves the separation purity and processing load.

[0029] Further, please refer to Figure 8 , the separation piece 250 includes a sleeve 251 sleeved on the riser 220, and the top of the sleeve 251 is provided with a separation disc 252, and a plurality of flow holes 254 are formed in the separation disc 252, and a plurality of support columns 253 are connected between the sleeve 251 and the separation disc 252. Specifically, the waste liquid falls on the separation disc 252, and the oil stains in the waste liquid are adsorbed by each separation disc 252 in turn, and then the waste liquid flows out downward through the flow holes 254.

[0030] It should be noted that each separation piece 250 is sleeved on the riser 220 in turn through the sleeve 251, forming a compact vertical superposition structure, and the waste liquid flows through each separation disc 252 from top to bottom, and the dispersed oil droplets are selectively adsorbed and coalesced by the surface properties (setting oil-wet and water-repellent material), realizing the step-by-step deep separation of oil and water, and improving the separation efficiency and liquid quality; The support column 253 ensures the firm connection and reasonable spacing between the separation disc 252 and the sleeve 251, providing sufficient space for the waste liquid to flow downward and the oil phase to gather; the reasonable distribution of the flow hole 254 ensures that the water phase can pass to the next stage unobstructed, while preventing the oil phase from being taken out too early, and optimizing the separation path; The surface of the separation disc 252 can be covered with a special modified material or a microstructure coating to further enhance its ability to capture oil droplets.

[0031] In further embodiments, please refer to Figure 9 , Figure 10 and Figure 11 , one side of the fluidizing cylinder 320 is connected with a connecting pipe 380 in communication with the separation tank 210, and a rotating shaft 370 is rotatably installed at the top of the fluidizing cylinder 320, and a plurality of blades 375 are circumferentially arranged on the rotating shaft 370, and the blades 375 are located at the junction of the fluidizing cylinder 320 and the connecting pipe 380; A plurality of slide rods 321 are circumferentially arranged on the inner wall of the fluidizing cylinder 320, a lifting disc 350 is slidably sleeved on the slide rod 321, and a spring 322 is sleeved on the lower end of the slide rod 321 and abuts against the lifting disc 350; a rotating sleeve 360 is rotatably sleeved at the center of the lifting disc 350, a plurality of push pieces 361 are circumferentially arranged on the rotating sleeve 360, and a plurality of limiting slide strips 371 extending in the axial direction are arranged on the rotating shaft 370, and the limiting slide strips 371 are slidably connected with the rotating sleeve 360; Specifically, the waste liquid at the bottom of the separation tank 210 is pumped into the fluidization cylinder 320 through the connecting pipe 380 by a pump (not shown in the figure) built in the separation tank 210, and then falls onto the lifting disc 350; In the initial state, the lifting disc 350 is at the upper end of the slide rod 321 due to the elastic force of the spring 322, at this time, the lifting disc 350 is located in the fluidization cylinder 320; the waste liquid impacts the blade 375 in the process of entering the fluidization cylinder 320, thereby driving the rotating shaft 370 to rotate, and since the limiting slide bar 371 and the rotating sleeve 360 are axially slidingly matched, each flipper 361 is synchronously driven to rotate, so as to realize the circumferential agitation of the waste liquid above the lifting disc 350, and promote the waste liquid to fully and uniformly contact with the treatment liquid in the fluidization cylinder 320, thereby improving the fluidization treatment effect of the waste liquid; With the continuous increase of the waste liquid above the lifting disc 350, the pressure applied to the lifting disc 350 also continuously increases, so that the spring 322 is continuously compressed, and the lifting disc 350 gradually slides down along the slide rod 321, until the lifting disc 350 slides down to the region of the conical cylinder 330, since there is a gap between the outer edge of the lifting disc 350 and the inner wall of the conical cylinder 330, so that the waste liquid above the lifting disc 350 is discharged downward; Subsequently, the lifting disc 350 gradually slides up and resets under the elastic force of the spring 322, the connecting pipe 380 continues to discharge the waste liquid above the lifting disc 350, so as to carry out the fluidization treatment of the next batch of waste liquid, and thus reciprocating, the batch fluidization and periodic discharge of the waste liquid can be realized.

[0032] It should be noted that the fluid kinetic energy of the pumped waste liquid is used to impact the blade 375, drive the rotating shaft 370 to rotate, and through the sliding cooperation of the limiting slide bar 371 and the rotating sleeve 360, the rotating motion is transmitted to the flipper 361, so as to realize the circumferential agitation of the waste liquid; The lifting disc 350, the spring 322 and the conical cylinder 330 constitute an automatic pressure valve mechanism, the waste liquid is temporarily stored and agitated on the lifting disc 350, and the batch fluidization and reaction are realized; when the liquid weight overcomes the elastic force of the spring 322, the waste liquid is discharged into the next stage, forming a pulse flow field, and this periodic water filling, mixing and discharge pulse process greatly enhances the contact efficiency and mass transfer effect of the waste liquid and the treatment medium (such as adsorbent, catalyst, etc.), and avoids short flow and dead zone.

[0033] Further, please refer to Figure 9 and Figure 11, for the supply of treatment liquid, the top of the fluidizing cylinder 320 is provided with a sealed bin 324, the upper end of the sealed bin 324 is connected with a filling pipe 323, the upper end of the rotating shaft 370 is rotatably connected with the sealed bin 324, the hollow flow channel 372 is formed in the rotating shaft 370 and is in communication with the inside of the sealed bin 324, the lower end of the hollow flow channel 372 is provided with a spraying cavity 373, a plurality of spraying grooves 374 are formed in the side wall of the spraying cavity 373 in a circumferential direction, and the spraying grooves 374 are distributed alternately with the blades 375; Specifically, the external treatment liquid is injected into the sealed bin 324 through the filling pipe 323, and the treatment liquid enters the spraying cavity 373 through the hollow flow channel 372 and is sprayed out of the spraying grooves 374 in a circumferential direction, and the upper end of the rotating shaft 370 is rotatably connected with the spraying grooves 374, so as not to affect the uninterrupted supply of the treatment liquid in the spraying cavity 373 during the rotation of the rotating shaft 370; the waste liquid sprayed at the connecting pipe 380 drives the rotating shaft 370 to rotate by impacting the blades 375, and at the same time, the treatment liquid is sprayed out of the spraying grooves 374 and fully contacts with the waste liquid, and the blades 375 can disperse the treatment liquid and the waste liquid during rotation, further promoting the full mixing of the waste liquid and the treatment liquid.

[0034] It should be noted that the treatment liquid enters the sealed bin 324 through the filling pipe 323, is transported to the high-speed rotating spraying cavity 373 through the hollow flow channel 372, and is finally uniformly sprayed out of the circumferential spraying grooves 374 at a certain pressure, so that the treatment liquid (such as coagulant, oxidant, etc.) can be directly and uniformly dispersed into the waste liquid in the stirring core area of the fluidizing cylinder 320, the coincidence of the adding point and the strongest turbulent flow area is realized, the instantaneous and sufficient mass transfer and mixing reaction are ensured, and the treatment efficiency and the utilization rate of the reagent are improved; The kinetic energy of the waste liquid fluid is used to drive the rotating shaft 370 to rotate for stirring by impacting the blades 375, and at the same time, the treatment liquid is circumferentially sprayed by driving the spraying cavity 373 to rotate, the treatment liquid is placed inside the rotating shaft 370, the interference of the external complex pipeline to the rotating motion is avoided, the upper end of the rotating shaft 370 is rotatably connected with the sealed bin 324, the sealing property of the continuous supply of the treatment liquid is ensured, the treatment liquid can be fully premixed with the waste liquid in each batch, the best conditions for the subsequent fluidization reaction on the lifting disc 350 are created, and the removal effect of the pulse fluidization treatment unit 300 on the pollutants (such as refractory organic matter, heavy metal, etc.) is improved.

[0035] Further, please refer to Figure 9The separation tank 210 is provided with an annular partition plate 311 on the top inner side, and an annular flushing groove 312 is formed between the annular partition plate 311 and the treatment tank 310. Specifically, after the waste liquid treatment is completed, clean water is introduced into the annular flushing groove 312 through the water inlet pipe 314, and the clean water is sprayed in a ring shape through the flushing holes 313 and is cross-flowed, so that the inner wall and the conical bottom of the treatment tank 310 can be flushed, and the sewage after flushing is collected at the bottom of the treatment tank 310 and is discharged from the discharge port 340.

[0036] It should be noted that the flushing operation of the entire inner wall and the conical bottom of the treatment tank 310 can be automatically completed by introducing clean water through the water inlet pipe 314, which realizes the automation of the cleaning process and completely avoids the high risk, high labor intensity and low efficiency problems of the traditional manual cleaning into the tank; The circumferentially distributed flushing holes 313 make the clean water sprayed in the form of multiple water streams in a ring shape, and the cross-flowed in the central area of the tank, forming a three-dimensional flushing network covering the entire cross section of the tank, ensuring that the flushing water flow can effectively reach every surface in the tank, especially the inclined inner wall of the conical cylinder 330, eliminating the cleaning dead angle and the sludge deposition hidden danger; Regular and thorough automatic cleaning can effectively prevent the scaling and sludge hardening of 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 stability of the treatment effect of the pulse fluidization treatment unit 300, and fundamentally reduce the equipment maintenance frequency and long-term operation cost.

[0037] In addition, please refer to Figure 12 The standing groove 410 is provided with a discharge groove 430 on one side, the discharge groove 430 is provided with a discharge pipe 450 communicated with the treatment tank 310 at one end, and a plurality of groove openings 440 communicated with the respective sedimentation cavities 420 are formed on one side of the discharge groove 430. Specifically, the waste liquid in the treatment tank 310 is discharged into the discharge groove 430 through the discharge pipe 450, and then the waste liquid is discharged into the respective sedimentation cavities 420 for standing and sedimentation through the corresponding groove openings 440.

[0038] It should be noted that the waste liquid is evenly distributed to the respective independent sedimentation cavities 420 through the discharge groove 430 and the multiple groove openings 440, realizing multi-channel parallel processing, effectively dispersing the hydraulic load and pollution load, avoiding the problems of short flow and heterogeneous flow in a single large-capacity sedimentation tank, providing a stable and efficient sedimentation environment for suspended solids, shortening the sedimentation time and improving the water quality; The plurality of sedimentation cavities 420 are arranged in parallel to form a modular sedimentation unit, allowing the system to isolate, empty and maintain and clean a single or multiple sedimentation cavities 420 during operation without interrupting the continuous operation of the entire device, enhancing the flexibility of operation and the maintainability of the equipment, and ensuring the continuity of the production process; The combination of the discharge groove 430 and the plurality of notches 440 plays a good water distribution role, ensuring that the waste liquid can smoothly and uniformly enter each sedimentation cavity 420, avoiding the impact interference of the local high flow rate on the sedimentation process, and creating ideal hydraulic conditions for solid-liquid separation.

[0039] The specific embodiments of the present application are described above, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present application, which are all within the protection of the present application.

Claims

1. An automated processing device for chemical waste liquid, for multistage processing of chemical waste liquid, characterized by, The application relates to a buffer pre-separation unit (100), an oil-water separation unit (200) and a pulse fluidization treatment unit (300). The buffer pre-separation unit (100) comprises a groove body (110) and a temporary storage tank (120) in communication with each other, one end of the groove body (110) is connected with a liquid inlet pipe (130); the oil-water separation unit (200) is connected with the temporary storage tank (120) and comprises a separation tank (210), a plurality of separation pieces (250) are distributed in the separation tank (210) from top to bottom; the pulse fluidization treatment unit (300) comprises a treatment tank (310), a fluidization cylinder (320) in communication with the separation tank (210) is arranged in the treatment tank (310), a conical cylinder (330) is connected with the lower end of the fluidization cylinder (320), a discharge port (340) is arranged at the bottom of the treatment tank (310); the static precipitation unit (400) comprises a static groove (410) in communication with the discharge port (340), a plurality of precipitation cavities (420) are distributed in the static groove (410). A plurality of buffer grooves (111) are arranged in the groove body (110), adjacent buffer grooves (111) are separated by a partition plate (112), a pre-separation groove (113) is arranged at one end of the groove body (110) close to the liquid inlet pipe (130), a gate plate (114) is arranged between the pre-separation groove (113) and each buffer groove (111). A plurality of liquid pumping pumps (140) are mounted on the bottom of the temporary storage tank (120), the output ends of the liquid pumping pumps (140) are connected with liquid pumping branch pipes (150), the liquid pumping branch pipes (150) are jointly connected with a liquid pumping main pipe (160), and the liquid pumping main pipe (160) is in communication with the separation tank (210). A flexible plate (116) is movably arranged in the pre-separation groove (113), a driving air cylinder (115) for driving the flexible plate (116) is mounted above the pre-separation groove (113), and a pre-separation grid (117) is embedded in the flexible plate (116).

2. The automatic treatment device for chemical waste liquid according to claim 1, characterized in that, Two groups of floating weir doors (170) are symmetrically arranged at one end of the groove body (110) close to the temporary storage tank (120), an intercepting piece (190) is mounted between the two groups of floating weir doors (170), and a flexible air bag (180) is arranged between the groove body (110) and the corresponding floating weir door (170). A lifting pipe (220) in communication with the temporary storage tank (120) is vertically mounted in the separation tank (210), the lifting pipe (220) penetrates through each group of separation pieces (250), a plurality of discharge holes (230) are circumferentially arranged on the upper end of the lifting pipe (220), and a conical cover (240) is arranged on the top of the lifting pipe (220).

3. The automatic treatment device for chemical waste liquid according to claim 2, characterized in that, The separation piece (250) comprises a sleeve (251) sleeved on the lifting pipe (220), a separation disc (252) is arranged on the top of the sleeve (251), a plurality of flow discharge holes (254) are arranged on the separation disc (252), and a plurality of supporting columns (253) are connected between the sleeve (251) and the separation disc (252).

4. The automatic treatment device for chemical waste liquid according to claim 3, characterized in that, ​ 5. The automatic treatment device for chemical waste liquid according to claim 1, characterized in that, ​ 6. The automatic treatment device for chemical waste liquid according to claim 5, characterized in that, ​ 7. The automatic treatment device for chemical waste liquid according to claim 1, characterized in that, The fluidizing cylinder (320) is connected with a connecting pipe (380) in communication with the separation tank (210) on one side, a rotating shaft (370) is rotatably installed on the top of the fluidizing cylinder (320), and a plurality of blades (375) are circumferentially arranged on the rotating shaft (370) and located at the joint of the fluidizing cylinder (320) and the connecting pipe (380); A plurality of sliding rods (321) are circumferentially arranged on the inner wall of the fluidizing cylinder (320), a lifting disc (350) is slidably sleeved on the sliding rod (321), and a spring (322) abutting against the lifting disc (350) is sleeved on the lower end of the sliding rod (321); a rotating sleeve (360) is rotatably sleeved at the center of the lifting disc (350), a plurality of pokers (361) are circumferentially arranged on the rotating sleeve (360), and a plurality of limiting sliding strips (371) extending in the axial direction are arranged on the rotating shaft (370) and slidably connected with the rotating sleeve (360).

8. The automatic treatment device for chemical waste liquid according to claim 7, characterized in that, A sealing bin (324) is arranged on the top of the fluidizing cylinder (320), a filling pipe (323) is connected to the upper end of the sealing bin (324), the upper end of the rotating shaft (370) is rotatably and sealingly connected with the sealing bin (324), a hollow flow channel (372) in communication with the inside of the sealing bin (324) is axially arranged in the rotating shaft (370), a jet cavity (373) is arranged at the lower end of the hollow flow channel (372), a plurality of jet grooves (374) are circumferentially arranged on the side wall of the jet cavity (373), and the jet grooves (374) are distributed alternately with the blades (375).

9. The automatic treatment device for chemical waste liquid according to claim 7, characterized in that, An annular partition plate (311) is arranged on the inner side of the top of the separation tank (210), an annular flushing groove (312) is formed between the annular partition plate (311) and the treatment tank (310), a plurality of flushing holes (313) in communication with the annular flushing groove (312) are circumferentially arranged on the side wall of the annular partition plate (311), and a water inlet pipe (314) penetrating through the annular flushing groove (312) is connected to one side of the treatment tank (310).

10. The automatic treatment device for chemical waste liquid according to claim 1, characterized in that, A discharge groove (430) is arranged on one side of the standing groove (410), a discharge pipe (450) in communication with the treatment tank (310) is mounted on one end of the discharge groove (430), and a plurality of groove openings (440) in communication with the sedimentation cavities (420) are arranged on one side of the discharge groove (430).

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