Process for treating pharmaceutical wastewater by membrane separation method in pharmaceutical industry

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a process for treating pharmaceutical wastewater through a membrane separation method in the pharmaceutical industry, which comprises the following steps: feeding wastewater into a sedimentation tank through a pipeline, and primarily screening the wastewater through a grid in the sedimentation tank to screen out large-particle impurities in the wastewater; feeding the wastewater in the sedimentation tank into an adjusting tank, and adding a neutralizer into the adjusting tank to enable the pH value of the wastewater to reach 6.5-8; feeding the wastewater in the regulating tank into a reaction tank, adding a flocculating agent, and aerating the wastewater through an aeration pipeline, so that the wastewater and the flocculating agent are subjected to a flocculation reaction; supernatant on the upper layer in the reaction tank after the flocculation reaction is sent to a filtering device to be filtered, the filtered supernatant is sent to a clear water tank, and the supernatant is discharged after being detected to reach the standard; the invention has the advantages of reducing the use of domestic water, lowering the cost and the like.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a process for treating pharmaceutical wastewater by using a membrane separation method in the pharmaceutical industry. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to ensure it meets the water quality requirements for discharge into a water body or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. Wastewater treatment is very important, and wastewater treatment in the pharmaceutical field is even more important. The wastewater in the pharmaceutical field contains various elements. If not treated thoroughly, the wastewater will seep into the soil or drinking water sources, causing adverse effects on humans, animals and plants. Therefore, wastewater needs to be treated. When treating wastewater in existing technologies, large amounts of domestic water are often used to dilute the wastewater, resulting in waste of domestic water. The use of large amounts of domestic water also increases treatment costs. Summary of the Invention

[0003] In view of this, the present invention provides a process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry, aiming to solve the problem of waste of domestic water and increased costs.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry, comprising: Step S1, primary screening, sending the wastewater through a pipeline to a sedimentation tank, and performing a primary screening on the wastewater through a grid in the sedimentation tank to screen out large particles of impurities in the wastewater; Step S2, adjusting the pH value, sending the wastewater in the sedimentation tank to the regulating tank, adding a neutralizer in the regulating tank to adjust the pH value of the wastewater to between 6.5 and 8; Step S3, flocculation and sedimentation, sending the wastewater in the regulating tank to the reaction tank, adding flocculant, and aerating the wastewater through the aeration pipe to cause flocculation reaction between the wastewater and the flocculant; Step S4, filtering and discharging, sending the supernatant in the upper layer of the reaction tank after the flocculation reaction to the filtration device for filtration, and sending the filtered supernatant to the clear water tank for discharge after testing to see if it meets the standards.

[0005] A further improvement of the present invention is that, in step S101, the large particles of impurities screened out on the grid are sent to a solid-liquid separation device.

[0006] A further improvement of the present invention is that, in step S301, the lower layer of sediment in the reaction tank is sent to a solid-liquid separation device; Step S302: The solid-liquid separation device separates the lower sediment and large particles of impurities into solid and liquid; In step S303, the separated waste liquid is sent to the grid to be cleaned, and the separated solid sediment and large particle impurities are sent to the garbage disposal center.

[0007] A further improvement of the present invention is that the solid-liquid separation device in step S301 is one of a plate and frame filter press, a belt filter press, and a centrifugal dehydrator.

[0008] A further improvement of the present invention is that the filtering device in step S4 is one of a microporous ceramic filter plate, a polypropylene filter membrane, and a nylon filter membrane.

[0009] A further improvement of the present invention is that, in step S304, the high-pressure steam generated by aeration in the reaction tank is sent to the filter device to flush the filter device.

[0010] A further improvement of the present invention is that a stirring assembly is provided in the regulating tank in step S3, and the stirring assembly includes: A stirring shaft is provided in the regulating tank and is driven to rotate by a first motor; Multiple groups of stirring paddles are evenly arranged along the axial direction of the stirring shaft, each group of stirring paddles includes two symmetrical stirring blades, and the stirring blades are connected to the stirring shaft through a quick-release assembly; Among them, the interior of the stirring shaft is a hollow structure, and a plurality of fixed sleeves are provided on the stirring shaft. The plurality of fixed sleeves correspond one-to-one to the plurality of stirring blades, and each fixed sleeve is perpendicular to the stirring shaft. The stirring blade includes a stirring part, a guide part, and a plug-in part. The plug-in part and the guide part are in the fixed sleeve, and the plug-in part is connected to the quick-release assembly. A guide groove is provided on the guide part along its axial direction to match the guide key provided in the fixed sleeve.

[0011] A further improvement of the present invention is that the quick-release assembly comprises: a screw, rotatably disposed in the fixing sleeve and coaxial with the fixing sleeve; A rotating shaft is vertically and rotatably arranged in the stirring shaft, a first bevel gear arranged on the upper end of the rotating shaft is meshed with the second bevel gear on the screw, and a hand wheel is arranged on the lower end of the rotating shaft; The slider is threadably connected to and penetrates the screw rod. When the screw rod rotates, the slider moves along the axial direction of the screw rod, and drives the multiple clamping components to disengage or clamp the plug-in parts.

[0012] A further improvement of the present invention is that the clamping assembly includes: A connecting rod is provided on the slider, and the first ends of the connecting rod are respectively hinged to the slider; a first swing plate, disposed between the slider and the plug-in portion, wherein a first end of the first swing plate is hingedly connected to a fixed plate in the fixed sleeve; The second swing plate is perpendicular to the first swing plate and is located above the plug-in portion. The first end of the second swing plate is connected to the second end of the first swing plate, and the connection is hinged to the second end of the connecting rod. A clamping column is provided on the lower surface of the second end of the second swing plate, and the clamping column is adapted to the clamping hole on the plug-in portion.

[0013] A further improvement of the present invention is that a notch is provided on the stirring shaft on one side of the hand wheel, a rotating sleeve is provided outside the notch, and the rotating sleeve is threadedly connected to the stirring shaft.

[0014] Due to the adoption of the above technical solution, the technical advancements achieved by the present invention are: The invention provides a process for treating pharmaceutical wastewater in the pharmaceutical industry by a membrane separation method. The pharmaceutical wastewater is collected through a pipeline and first discharged into a sedimentation tank. A grid performs initial screening, decomposition, filtration and precipitation on large particle impurities in the wastewater. The wastewater is then transferred to a regulating tank. After the pH value of the wastewater is adjusted, the wastewater is sent to a reaction tank. A flocculation reaction is carried out in the reaction tank to cause flocculants to be precipitated from other impurities in the wastewater. Aeration can accelerate the flocculation reaction in the reaction tank. After the flocculation is completed, the supernatant in the upper layer of the reaction tank enters a filtration device for further filtration to filter out small particle impurities in the supernatant. The filtered supernatant enters a clear water tank for testing and can be recycled or discharged after meeting the standards. Compared with the existing technology, the use of domestic water can be effectively reduced and the cost can be reduced.

[0015] The present invention provides a process for treating pharmaceutical wastewater by a membrane separation method in the pharmaceutical industry. The process comprises sending large-particle impurities screened out on a grid and lower-layer sediment in a reaction tank to a solid-liquid separation device for solid-liquid separation. The separated solid sediment and large-particle impurities are sent to a garbage disposal center for treatment. The separated waste liquid can be used to clean the grid, and the waste liquid can be efficiently utilized. The waste liquid can also be more conveniently covered on the surface of the grid, taking away dirt, debris, etc. attached to the grid, playing a cleaning role, ensuring that the grid can subsequently perform normal functions such as interception and filtration, and maintaining a smooth process flow.

[0016] The present invention provides a process for treating pharmaceutical wastewater by a membrane separation method in the pharmaceutical industry. The high-pressure steam generated by aeration in the reaction tank is collected and sent to a filter device through a pipeline, which can be used to flush the filter device, thereby effectively realizing the secondary utilization of resources. The high-pressure steam has a high temperature and energy. After being transported to the filter device, its high temperature can soften and dissolve some difficult-to-clean dirt on the surface and inside of the filter device, making it easier for the dirt to be separated from the filter device. Compared with simply relying on water flushing, it can achieve a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a process flow chart of an embodiment of the present invention; Figure 2 is a flowchart of steps of an embodiment of the present invention; Figure 3 Schematic diagram of the overall structure of the stirring assembly in the present invention; Figure 4 Schematic diagram of the stirring blade of the stirring assembly in the present invention; Figure 5 This is a schematic diagram of the quick-release assembly structure of the stirring assembly in the present invention.

[0019] Description of reference numerals: 10-stirring shaft, 11-first motor, 12-stirring blade, 121-stirring part, 122-guide part, 123-plug-in part, 124-clamping hole, 13-fixing sleeve, 131-guide key, 20-quick release assembly, 21-screw, 211-second bevel gear, 22-rotating shaft, 221-first bevel gear, 222-handwheel, 23-slider, 24-connecting rod, 25-first swing plate, 26-second swing plate, 261-clamping column, 27-fixing plate, 28-rotating sleeve, 281-notch. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, in the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that obscure the description of the present invention.

[0021] The present invention provides a process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry. Figures 1 to 2 As can be seen, a membrane separation process for treating pharmaceutical wastewater in the pharmaceutical industry mainly includes the following parts: initial screening, pH adjustment, flocculation and sedimentation, and filtration and discharge. The connections between these parts are as follows.

[0022] In the present invention, step S1, primary screening, is to send the wastewater through a pipeline to a sedimentation tank, and perform primary screening on the wastewater through a grid in the sedimentation tank so that large particles of impurities in the wastewater are screened out, thereby preventing excessive large particles of impurities from interfering with the subsequent sedimentation process; Step S2: pH adjustment. The wastewater in the sedimentation tank is sent to a regulating tank. A neutralizer is added to the regulating tank to adjust the pH of the wastewater to between 6.5 and 8. Adjusting the pH of the wastewater to this range is more conducive to meeting emission standards and avoiding adverse effects on the receiving water environment caused by the discharge of overly acidic or overly alkaline wastewater, such as damage to the ecological balance of the water body and corrosion of drainage pipes. Step S3, flocculation and sedimentation, transfers the wastewater from the regulating tank to the reaction tank, where a flocculant is added. Aeration pipes aerate the wastewater, allowing the wastewater and flocculant to undergo a flocculation reaction. After the pH adjustment step, although the soluble substances in the wastewater are in a suitable acid-base environment, many fine suspended particles remain that are difficult to effectively remove through natural sedimentation. By adding a flocculant and promoting its flocculation reaction with the wastewater, these previously dispersed fine suspended particles can be aggregated and combined to form larger flocs, significantly increasing the particle settling rate. Step S4, filtration and discharge, sends the supernatant from the upper layer of the reaction tank after the flocculation reaction to a filtration device for filtration. The filtered supernatant is then sent to a clear water tank for testing and discharge after compliance. Although most suspended particles have formed flocs and settled to the bottom of the reaction tank after the previous flocculation and sedimentation steps, some fine suspended matter, incompletely reacted impurities, and flocculant may still remain in the upper supernatant. Filtration through the filtration device can further remove these residual impurities, meticulously purifying the water quality so that the final discharged water meets relevant environmental emission standards, avoiding pollution to the receiving water body and effectively protecting the ecological balance of the surrounding water environment.

[0023] Pharmaceutical wastewater is collected through pipelines and first discharged into the sedimentation tank. The screen screens perform initial screening, decomposition, filtration and precipitation of large particles of impurities in the wastewater. The wastewater is then transferred to the regulating tank. After the pH value of the wastewater is adjusted, it is sent to the reaction tank. Flocculation reaction is carried out in the reaction tank to precipitate other impurities in the wastewater into flocs. Aeration can accelerate the flocculation reaction in the reaction tank. After flocculation is completed, the supernatant in the upper layer of the reaction tank enters the filtration device for further filtration to filter out small particles of impurities in the supernatant. After filtration, the supernatant enters the clear water tank for testing and can be recycled or discharged after meeting the standards, which can effectively reduce the use of domestic water and reduce costs.

[0024] Specifically, the aperture of the grille is 5mm-8mm, which can effectively intercept large particles without affecting the rapid passage of wastewater.

[0025] Specifically, the aeration pipe aerates the reaction tank, which can generate strong hydraulic disturbance, so that the added flocculant can be quickly and evenly dispersed in the wastewater, ensuring that the wastewater in every place can fully contact with the flocculant, avoiding the overall effect of the flocculation reaction affected by excessively high or low local flocculant concentration, and ensuring that the wastewater in the entire reaction tank can simultaneously undergo an effective flocculation process.

[0026] As an example, large impurities screened out on the grid are sent to a solid-liquid separation device. The lower sediment in the reaction tank is sent to the solid-liquid separation device, which separates the lower sediment and large impurities into solid-liquid phases. The separated waste liquid is sent to the grid for cleaning, and the separated solid sediment and large impurities are sent to a waste disposal center.

[0027] The large particles of impurities screened out on the grille and the lower sediment in the reaction tank are sent to the solid-liquid separation device for solid-liquid separation. The separated solid sediment and large particles of impurities are sent to the garbage disposal center for treatment. The separated waste liquid can be used to clean the grille, and the waste liquid can be efficiently utilized. The waste liquid can also be more conveniently covered on the surface of the grille, taking away the dirt and debris attached to the grille, playing a cleaning role, ensuring that the grille can subsequently perform normal interception and filtration functions, and maintain the smoothness of the process flow.

[0028] In this embodiment, high-pressure steam generated by aeration within the reaction tank is delivered to the filter device for flushing. The high-pressure steam generated by aeration within the reaction tank is collected and delivered to the filter device through a pipeline for flushing, effectively achieving secondary resource utilization. High-pressure steam has a high temperature and energy. Once delivered to the filter device, its high temperature softens and dissolves some difficult-to-clean dirt on and within the filter device, making it easier to remove the dirt. This achieves a better cleaning effect than relying solely on water flushing.

[0029] In this embodiment, the solid-liquid separation device is one of a plate and frame filter press, a belt filter press, and a centrifugal dehydrator.

[0030] In this embodiment, the filtering device is one of a microporous ceramic filter plate, a polypropylene filter membrane, and a nylon filter membrane.

[0031] As an embodiment, Figure 3 To the attached Figure 5It can be seen that a stirring assembly is provided in the regulating tank in step S3, and the stirring assembly includes a stirring shaft 10, which is arranged in the regulating tank and rotates under the drive of the first motor 11; multiple groups of stirring paddles are evenly arranged along the axial direction of the stirring shaft 10, and each group of stirring paddles includes two symmetrical stirring blades 12, and the stirring blades 12 are connected to the stirring shaft 10 through a quick-release assembly 20; wherein, the interior of the stirring shaft 10 is a hollow structure, and a plurality of fixed sleeves 13 are fixedly provided on the stirring shaft 10, and the plurality of fixed sleeves 13 correspond one-to-one to the plurality of stirring blades 12, and each fixed sleeve 13 is perpendicular to the stirring shaft 10, and the stirring blade 12 includes a stirring portion 121, a guide portion 122, and a plug-in portion 123, the plug-in portion 123 and the guide portion 122 are in the fixed sleeve 13, the plug-in portion 123 is connected to the quick-release assembly 20, and a guide groove is provided on the guide portion 122 along its axial direction to adapt to the guide key 131 fixedly provided in the fixed sleeve 13.

[0032] Installing a stirring assembly in the regulating tank can accelerate the reaction of the materials, quickly blend the wastewater and neutralizer, and shorten the time it takes to neutralize the wastewater. The operation process of the stirring assembly is as follows: the first motor 11 drives the stirring shaft 10 to rotate, and the stirring shaft 10 stirs the materials through the stirring blades 12; The stirring blade 12 needs to be repaired or replaced after being used for a period of time. The stirring blade 12 in this stirring assembly is connected to the stirring shaft 10 through a quick-release assembly 20, so the stirring blade 12 can be quickly removed for easy repair or replacement.

[0033] In this embodiment, in conjunction with the appendix of the specification Figure 4 To the attached Figure 4 It can be seen that the quick-release assembly 20 includes a screw 21, which is rotatably arranged in the fixed sleeve 13 and coaxial with the fixed sleeve 13; the rotating shaft 22 is vertically and rotatably arranged in the stirring shaft 10, and the first bevel gear 221 fixed at its upper end is engaged with the second bevel gear 211 on the screw 21, and a handwheel 222 is fixed at the lower end of the rotating shaft 22; the slider 23 is threadedly connected to the screw 21 and passes through it. When the screw 21 rotates, the slider 23 moves along the axial direction of the screw 21, and the slider 23 drives multiple clamping components to disengage or clamp the plug-in part 123. The clamping assembly includes a connecting rod 24 arranged on the slider 23, and the first end of the connecting rod 24 is hinged to the slider 23 respectively; a first swinging plate 25 is arranged between the slider 23 and the plug-in portion 123, and the first end of the first swinging plate 25 is hinged to the fixed plate 27 in the fixed sleeve 13; the second swinging plate 26 is perpendicular to the first swinging plate 25 and is located above the plug-in portion 123, the first end of the second swinging plate 26 is connected to the second end of the first swinging plate 25, and the connection is hinged to the second end of the connecting rod 24, and a clamping column 261 is provided on the lower surface of the second end of the second swinging plate 26, and the clamping column 261 is adapted to the clamping hole 124 on the plug-in portion 123.

[0034] The rotating shaft 22 is rotated by the handwheel 222, and the rotating shaft 22 drives the first bevel gear 221 to rotate, the first bevel gear 221 drives the second bevel gear 211 to rotate, the second bevel gear 211 drives the screw 21 to rotate, the screw 21 drives the slider 23 to move along the axial direction of the screw 21, the slider 23 drives the connecting rod 24 to swing, the connecting rod 24 drives the first swing plate 25 and the second swing plate 26 to swing, and the clamping column 261 on the second swing plate 26 disengages from or enters the clamping hole 124, thereby clamping or disengaging the plug-in portion 123 of the stirring blade 12.

[0035] Specifically, when assembling the stirring blade 12, in order to quickly make the clamping hole 124 reach the specified position, the guide groove (not shown in the figure) on the guide part 122 is slidably connected with the guide key 131 on the fixed sleeve 13, so that the clamping hole 124 can reach the specified position, and the clamping column 261 will not be unable to enter or find the clamping hole 124.

[0036] Specifically, the rotating shaft 22 can be self-locking, and self-locking is a prior art, which will not be described in detail here.

[0037] In this embodiment, in conjunction with the appendix of the specification Figure 4 It can be seen that a notch 281 is provided on the stirring shaft 10 on one side of the hand wheel 222 , and a rotating sleeve 28 is provided outside the notch 281 . The rotating sleeve 28 is threadedly connected to the stirring shaft 10 .

[0038] The hand wheel 222 can be rotated through the notch 281 . When there is no need to rotate the hand wheel 222 , the rotating sleeve 28 can be rotated to the notch 281 to block the notch 281 and prevent waste water from entering.

[0039] It should be noted that, in this patent application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus. In the absence of further restrictions, the sentence "comprising an element defined by ... does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element".

[0040] 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. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry, characterized in that: include, Step S1, primary screening, sending the wastewater through a pipeline to a sedimentation tank, and performing a primary screening on the wastewater through a grid in the sedimentation tank to screen out large particles of impurities in the wastewater; Step S2, adjusting the pH value, sending the wastewater in the sedimentation tank to the regulating tank, adding a neutralizer in the regulating tank to adjust the pH value of the wastewater to between 6.5 and 8; Step S3, flocculation and sedimentation, sending the wastewater in the regulating tank to the reaction tank, adding flocculant, and aerating the wastewater through the aeration pipe to cause flocculation reaction between the wastewater and the flocculant; Step S4, filtering and discharging, sending the supernatant in the upper layer of the reaction tank after the flocculation reaction to the filtration device for filtration, and sending the filtered supernatant to the clear water tank for discharge after testing to see if it meets the standards.

2. The process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 1, characterized in that: The step S1 further comprises the following steps: In step S101, the large particles of impurities screened out from the grid are sent to a solid-liquid separation device.

3. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 2, characterized in that: The step S3 further comprises the following steps: Step S301, sending the lower layer of sediment in the reaction tank to the solid-liquid separation device; Step S302: The solid-liquid separation device separates the lower sediment and large particles of impurities into solid and liquid; In step S303, the separated waste liquid is sent to the grid, the grid is cleaned, and the separated solid sediment and large particle impurities are sent to the garbage disposal center.

4. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 3, characterized in that: The solid-liquid separation device in step S301 is one of a plate and frame filter press, a belt filter press, and a centrifugal dehydrator.

5. The process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 1, characterized in that: The filtering device in step S4 is one of a microporous ceramic filter plate, a polypropylene filter membrane, and a nylon filter membrane.

6. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 5, characterized in that: The step S3 further comprises the following steps: In step S304, the high-pressure steam generated by aeration in the reaction tank is sent to the filter device to flush the filter device.

7. The process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 1, characterized in that: The regulating tank in step S3 is provided with a stirring assembly, and the stirring assembly includes: a stirring shaft, disposed in the regulating tank and driven to rotate by a first motor; Multiple groups of stirring paddles are evenly arranged along the axial direction of the stirring shaft, each group of stirring paddles includes two symmetrical stirring blades, and the stirring blades are connected to the stirring shaft through a quick-release assembly; Among them, the interior of the stirring shaft is a hollow structure, and a plurality of fixed sleeves are provided on the stirring shaft. The plurality of fixed sleeves correspond one-to-one to the plurality of stirring blades, and each fixed sleeve is perpendicular to the stirring shaft. The stirring blade includes a stirring part, a guide part, and a plug-in part. The plug-in part and the guide part are in the fixed sleeve, and the plug-in part is connected to the quick-release assembly. A guide groove is provided on the guide part along its axial direction to match the guide key provided in the fixed sleeve.

8. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 7, characterized in that: The quick-release assembly comprises: a screw, rotatably disposed in the fixing sleeve and coaxial with the fixing sleeve; A rotating shaft is vertically and rotatably arranged in the stirring shaft, a first bevel gear arranged on the upper end of the rotating shaft is meshed with the second bevel gear on the screw, and a hand wheel is arranged on the lower end of the rotating shaft; The slider is threadably connected to and penetrates the screw rod. When the screw rod rotates, the slider moves along the axial direction of the screw rod, and drives the multiple clamping components to disengage or clamp the plug-in parts.

9. A process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 8, characterized in that: The clamping assembly comprises: A connecting rod is provided on the slider, and the first ends of the connecting rod are respectively hinged to the slider; a first swing plate, disposed between the slider and the plug-in portion, wherein a first end of the first swing plate is hingedly connected to a fixed plate in the fixed sleeve; The second swing plate is perpendicular to the first swing plate and is located above the plug-in portion. The first end of the second swing plate is connected to the second end of the first swing plate, and the connection is hinged to the second end of the connecting rod. A clamping column is provided on the lower surface of the second end of the second swing plate, and the clamping column is adapted to the clamping hole on the plug-in portion.

10. The process for treating pharmaceutical wastewater by membrane separation in the pharmaceutical industry according to claim 8, characterized in that: A notch is provided on the stirring shaft on one side of the hand wheel, a rotating sleeve is provided outside the notch, and the rotating sleeve is threadedly connected to the stirring shaft.

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