A wastewater treatment device and method for chemical pharmaceutical production

Abstract

The present invention discloses a wastewater treatment device and method for chemical pharmaceutical production, which relates to the technical field of sewage treatment. The following scheme is proposed, including the following steps: S1. Impurity removal treatment: Sewage first enters a grid decontamination device to remove large particle solid impurities, and then flows into an adjustment tank to adjust the water volume and quality; S2. Coagulation and precipitation treatment: The sewage flowing out of the adjustment tank enters a coagulation reaction tank, and a composite coagulant is added. Under stirring conditions, the reaction proceeds for a specific time to make colloid substances and some organic matters coagulate and precipitate; S3. Biological membrane reaction treatment: The sewage after coagulation and precipitation enters a biological membrane reactor. The present invention effectively guarantees the filtering effect on solid impurities in chemical pharmaceutical wastewater through the adjustment treatment of the filtering holes, and can effectively remove various pollutants in pharmaceutical sewage, making the treated sewage meet the national specified discharge standards, and has remarkable advantages such as high treatment efficiency, low cost, simple operation and environmental protection.

Description

Technical Field

[0001] The present invention relates to sewage treatment technology, and in particular to a wastewater treatment device and method for chemical pharmaceuticals. Background Art

[0002] The pharmaceutical industry generates a large amount of sewage during the production process. The sewage contains complex components such as organic pollutants, chemical compounds, heavy metal ions, and bioactive substances. If these pollutants are directly discharged without effective treatment, they will cause serious harm to the environment and human health. Currently, common sewage treatment methods have problems such as low treatment efficiency, high cost, and poor removal effect on some refractory pollutants. For example, traditional biological treatment methods are difficult to completely decompose and remove special organic substances and heavy metals in chemical synthetic drugs; when chemical treatment methods are used to treat biopharmaceutical sewage, secondary pollution may be caused due to improper addition of reagents and bio-macromolecules cannot be effectively degraded. Therefore, there is an urgent need for an efficient, comprehensive, and environmentally friendly pharmaceutical sewage treatment device and method. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the prior art and propose a wastewater treatment device and method for chemical pharmaceuticals.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A wastewater treatment method for chemical pharmaceuticals includes the following steps:

[0006] S1. Impurity removal treatment: The sewage first enters the grid decontamination device to remove large particle solid impurities, and then flows into the regulating tank to regulate the water volume and quality;

[0007] S2. Coagulation and precipitation treatment: The sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added. Under stirring conditions, it reacts for a specific time to make colloidal substances and some organic substances coagulate and precipitate;

[0008] S3. Biofilm reaction treatment: The sewage after coagulation and precipitation enters the biofilm reactor. Under aerobic conditions, aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage;

[0009] S4. Organic matter decomposition treatment: The effluent from the biofilm reactor enters the anaerobic fermentation tank. In an anaerobic environment, anaerobic microorganisms decompose the remaining refractory organic matter;

[0010] S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb residual organic pollutants and trace heavy metals;

[0011] S6. Standard emission detection and treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water meets the discharge standards.

[0012] Further, when the grid dirt removal device in the S1 impurity removal treatment is in use, the pharmaceutical sewage is first introduced into the grid dirt removal device, and the grid spacing of the grid dirt removal device can be automatically adjusted according to the actual situation of the solid particle size in the sewage.

[0013] Further, during the S2 coagulation and precipitation treatment, the sewage stays in the adjustment tank for half an hour to fully adjust the water volume and water quality.

[0014] Further, during the S3 biofilm reaction treatment, in the coagulation reaction tank, the mass ratio of polyaluminum chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction duration.

[0015] A wastewater treatment device for chemical pharmaceuticals, which is applicable to the above-mentioned wastewater treatment method for chemical pharmaceuticals. The grid dirt removal device in the S1 impurity removal treatment includes a machine body;

[0016] It also includes a filtering mechanism, which is installed inside the machine body and is used to filter solid impurities from the wastewater of chemical pharmaceuticals. The filtering mechanism includes a first filter cylinder fixedly connected to the inside of the machine body, and a second filter cylinder is rotatably connected inside the first filter cylinder;

[0017] A cleaning mechanism, which is installed inside the second filter cylinder and is used to clean the inside of the second filter cylinder. The cleaning mechanism includes a connecting rod rotatably connected to the inside of the second filter cylinder and cleaning shovels fixedly connected in an array on the connecting rod. One side of the cleaning shovel abuts against the inside of the second filter cylinder;

[0018] A feeding mechanism, which is installed below the machine body and is used to discharge the filtered solid impurities. The feeding mechanism includes a feeding pipe fixedly connected to the bottom of the machine body, and a spiral feeding rod is rotatably connected inside the feeding pipe. There is a transmission mechanism between one end of the feeding mechanism and the cleaning mechanism;

[0019] A driving mechanism, which is installed on one side of the machine body and is used to output power to the filtering mechanism and the cleaning mechanism. There is a linkage mechanism between the driving mechanism and the filtering mechanism and the cleaning mechanism.

[0020] Further, the driving mechanism includes a motor frame fixedly connected to one side of the machine body. The motor frame has a driving motor fixedly connected to it, and a first bevel gear is fixedly connected to the output shaft of the driving motor.

[0021] Further, the filtering mechanism further includes filter slots arrayed on the first filter cylinder, and a plurality of filter holes with different diameters are arrayed on the second filter cylinder, and the plurality of filter holes are respectively indirectly communicated with the filter slots.

[0022] Further, the transmission mechanism includes a first pulley fixedly connected to one end of the connecting rod, and a second pulley is fixedly connected to one end of the spiral pusher corresponding to the first pulley, and the second pulley and the first pulley are externally connected by the same belt.

[0023] Further, the linkage mechanism includes a transmission rod rotatably connected to one side of the machine body. A first gear, a second gear and a second bevel gear are respectively fixedly connected to the transmission rod. The second bevel gear is meshed and driven with the first bevel gear on one side. A first one-way gear is fixedly connected to the connecting rod. The first one-way gear is meshed and rotated with the first gear on one side. A transmission sleeve is fixedly connected to one side of the second filter cylinder. A second one-way gear is fixedly connected to the transmission sleeve. The second one-way gear is meshed and driven with the second gear on one side. The connecting rod is movably sleeved inside the transmission sleeve.

[0024] Further, a water inlet is opened at one end of the machine body. A water inlet pipe is fixedly connected to the water inlet. A first control valve is fixedly connected to the water inlet pipe. A plurality of drain ports are opened on one side of the machine body. A plurality of drain pipes are fixedly connected to the plurality of drain ports. A second control valve is respectively fixedly connected to the plurality of drain pipes. A plurality of support columns are fixedly connected to the bottom of the machine body.

[0025] By adjusting the filter holes, the present invention effectively ensures the filtering effect of solid impurities in chemical pharmaceutical wastewater, and at the same time can effectively remove various pollutants in pharmaceutical sewage, so that the treated sewage meets the national discharge standards, and has the remarkable advantages of high treatment efficiency, low cost, simple operation and environmental protection. Brief Description of the Drawings

[0026] Figure 1 is a step block diagram of a chemical pharmaceutical wastewater treatment method proposed by the present invention;

[0027] Figure 2 is an overall top-down three-dimensional structure diagram of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0028] Figure 3 is an overall bottom-up three-dimensional structure diagram of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0029] Figure 4 is a partial cross-sectional top-down three-dimensional structure diagram of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0030] Figure 5 The top-down perspective structure schematic diagram of the filtering mechanism and the feeding mechanism of a wastewater treatment device for chemical pharmaceuticals proposed by the present invention;

[0031] Figure 6 The top-down perspective structure schematic diagram of the partial cross-section of the cleaning mechanism and the first filter cylinder of a wastewater treatment device for chemical pharmaceuticals proposed by the present invention;

[0032] Figure 7 The top-down perspective structure schematic diagram of the first filter cylinder of a wastewater treatment device for chemical pharmaceuticals proposed by the present invention;

[0033] Figure 8 The top-down perspective structure schematic diagram of the partial cross-section of the feeding mechanism of a wastewater treatment device for chemical pharmaceuticals proposed by the present invention.

[0034] Explanation of the reference numerals:

[0035] 1. Body; 2. First filter cylinder; 3. Second filter cylinder; 4. Transmission sleeve; 5. Connecting rod; 6. Cleaning shovel; 7. First one-way gear; 8. Transmission rod; 9. First gear; 10. Second gear; 11. Second one-way gear; 12. Feeding pipe; 13. Screw feeding rod; 14. Second pulley; 15. First pulley; 16. Belt; 17. Motor frame; 18. Driving motor; 19. First bevel gear; 20. Second bevel gear. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0038] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] Refer to Figure 1 : A wastewater treatment method for chemical pharmaceuticals, comprising the following steps:

[0041] S1. Impurity removal treatment: The sewage first enters the grid decontamination device to remove large particulate solid impurities, and then flows into the regulating tank to regulate the water volume and water quality;

[0042] S2. Coagulation and precipitation treatment: The sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added, and the reaction is carried out for a specific time under stirring conditions to coagulate and precipitate the colloidal substances and some organic matters;

[0043] S3. Biofilm reaction treatment: The sewage after coagulation and precipitation enters the biofilm reactor, and under aerobic conditions, the aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage;

[0044] S4. Organic matter decomposition treatment: The effluent from the biofilm reactor enters the anaerobic fermentation tank, and under an anaerobic environment, the anaerobic microorganisms decompose the remaining refractory organic matters;

[0045] S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb the residual organic pollutants and trace heavy metals;

[0046] S6. Standard discharge detection treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water is discharged up to the standard.

[0047] In the present invention, when the grid decontamination device in the S1 impurity removal treatment is in use, the pharmaceutical sewage is first introduced into the grid decontamination device, and the grid spacing of the grid decontamination device can be automatically adjusted according to the actual situation of the solid particle size in the sewage.

[0048] In the present invention, during the S2 coagulation and precipitation treatment, the sewage stays in the regulation tank for half an hour to fully regulate the water volume and water quality.

[0049] In the present invention, during the S3 biofilm reaction treatment, in the coagulation reaction tank, the mass ratio of polyaluminum chloride, polyacrylamide, and chitosan in the composite coagulant is added according to the reaction duration.

[0050] Working principle: During use, in actual operation, the pharmaceutical sewage is introduced into the grid decontamination device. The grid spacing can be adjusted according to the size of solid particles in the sewage. The sewage stays in the regulation tank for half an hour to fully regulate the water volume and water quality. In the coagulation reaction tank, the mass ratio of polyaluminum chloride, polyacrylamide, and chitosan in the composite coagulant is added and processed according to the reaction duration.

[0051] Example 2

[0052] Refer to Figures 2-8 : A wastewater treatment device for chemical pharmaceuticals, which is applicable to the above-mentioned wastewater treatment method for chemical pharmaceuticals. The grid decontamination device in the S1 impurity removal treatment includes a machine body 1;

[0053] It further includes a filtering mechanism, which is installed inside the machine body 1 and is used to filter solid impurities from the wastewater of chemical pharmaceuticals. The filtering mechanism includes a first filter cylinder 2 fixedly connected to the inside of the machine body 1, and a second filter cylinder 3 is rotatably connected inside the first filter cylinder 2;

[0054] A cleaning mechanism, which is installed inside the second filter cylinder 3 and is used to clean the inside of the second filter cylinder 3. The cleaning mechanism includes a connecting rod 5 rotatably connected to the inside of the second filter cylinder 3 and cleaning shovels 6 fixedly connected in an array on the connecting rod 5. One side of the cleaning shovels 6 abuts against the inside of the second filter cylinder 3;

[0055] A feeding mechanism, which is installed below the machine body 1 and is used to discharge the filtered solid impurities. The feeding mechanism includes a feeding pipe 12 fixedly connected to the bottom of the machine body 1, and a spiral feeding rod 13 is rotatably connected inside the feeding pipe 12. There is a transmission mechanism between one end of the feeding mechanism and the cleaning mechanism;

[0056] A driving mechanism, which is installed on one side of the machine body 1 and is used to output power to the filtering mechanism and the cleaning mechanism. There is a linkage mechanism between the driving mechanism and the filtering mechanism and the cleaning mechanism.

[0057] In the present invention, the driving mechanism includes a motor frame 17 fixedly connected to one side of the machine body 1. On the motor frame 17, a driving motor 18 is fixedly connected, and the output shaft of the driving motor 18 is fixedly connected with a first bevel gear 19.

[0058] In the present invention, the filtering mechanism further includes filtering grooves arrayed on the first filtering cylinder 2, and a plurality of filtering holes with different diameters are arrayed on the second filtering cylinder 3. The plurality of filtering holes are respectively indirectly communicated with the filtering grooves.

[0059] In the present invention, the transmission mechanism includes a first belt pulley 15 fixedly connected to one end of the connecting rod 5. One end of the spiral feeding rod 13 is fixedly connected with a second belt pulley 14 corresponding to the first belt pulley 15, and the second belt pulley 14 and the first belt pulley 15 are externally connected with the same belt 16 for transmission.

[0060] In the present invention, the linkage mechanism includes a transmission rod 8 rotatably connected to one side of the machine body 1. A first gear 9, a second gear 10 and a second bevel gear 20 are respectively fixedly connected to the transmission rod 8. One side of the second bevel gear 20 is in meshing transmission with the first bevel gear 19. A first one-way gear 7 is fixedly connected to the connecting rod 5. One side of the first one-way gear 7 is in meshing rotation with the first gear 9. One side of the second filtering cylinder 3 is fixedly connected with a transmission sleeve 4. A second one-way gear 11 is fixedly connected to the transmission sleeve 4. One side of the second one-way gear 11 is in meshing transmission with the second gear 10. The connecting rod 5 is movably sleeved inside the transmission sleeve 4.

[0061] In the present invention, a water inlet is provided at one end of the machine body 1. A water inlet pipe is fixedly connected to the water inlet, and a first control valve is fixedly connected to the water inlet pipe. A plurality of drain ports are provided on one side of the machine body 1. A plurality of drain pipes are fixedly connected to the plurality of drain ports, and a second control valve is respectively fixedly connected to the plurality of drain pipes. A plurality of support columns are fixedly connected to the bottom of the machine body 1.

[0062] Working principle: When in use, when the size of the filtering holes needs to be adjusted, the driving motor 18 starts in the reverse direction. When the driving motor 18 starts in the reverse direction, it drives the first bevel gear 19 to rotate. The reverse rotation of the first bevel gear 19 drives the transmission rod 8 to rotate through the second bevel gear 20. The rotation of the transmission rod 8 drives the rotation of the first gear 9 and the second gear 10. The synchronous rotation of the first gear 9 and the second gear 10 is respectively in meshing rotation with the first one-way gear 7 and the second one-way gear 11. Since the meshing rotation directions of the first one-way gear 7 and the second one-way gear 11 with the connecting rod 5 and the transmission sleeve 4 are opposite, when the first one-way gear 7 rotates in the reverse direction, it does not mesh with the connecting rod 5 to rotate, keeping the connecting rod 5 in a static state. At the same time, the second one-way gear 11 rotates in the reverse direction to drive the transmission sleeve 4 to rotate, and the rotation of the transmission sleeve 4 drives the second filtering cylinder 3 to rotate, and the filtering holes are adjusted through the rotation of the second filtering cylinder 3.

[0063] However, when it is necessary to clean the filter holes, the drive motor 18 starts forward, driving the first bevel gear 19 to rotate forward, thereby driving the rotation of the transmission rod 8 through the second bevel gear 20, and then driving the rotation of the connecting rod 5. The rotation of the connecting rod 5 drives the cleaning shovel 6 to rotate. The rotation of the cleaning shovel 6 cleans the filter holes inside the second filter cylinder 3. At the same time, it drives the rotation of the first pulley 15. The rotation of the first pulley 15 drives the rotation of the second pulley 14 through the belt 16. The rotation of the second pulley 14 drives the spiral push rod 13 to rotate. The solid impurities filtered and cleaned are pushed through the rotation of the spiral push rod 13.

[0064] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A method for treating wastewater from chemical pharmaceutical production, characterized in that: The following steps are involved: S1. Impurity removal treatment: The sewage first enters the screen decontamination device to remove large solid impurities, and then flows into the regulating tank to adjust the water volume and water quality; S2, coagulation and sedimentation treatment: the sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added to react for a specific time under stirring conditions to cause the colloidal substances and some organic matter to coagulate and precipitate; S3, biofilm reaction treatment: After coagulation and sedimentation, the sewage enters the biofilm reactor. Under aerobic conditions, aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage; S4, organic matter decomposition treatment: the effluent from the biofilm reactor enters the anaerobic fermentation tank, where anaerobic microorganisms decompose the remaining difficult-to-degrade organic matter in an oxygen-free environment; S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb residual organic pollutants and trace heavy metals; S6, standard discharge detection and treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water meets the discharge standards; In the coagulation reaction tank, the mass ratio of polyaluminium chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction time.

2. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: When the grid decontamination device in the S1 impurity removal process is used, the pharmaceutical wastewater is first introduced into the grid decontamination device, and the grid spacing of the grid decontamination device can be automatically adjusted according to the actual size of the solid particles in the wastewater.

3. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: The sewage stays in the equalization tank for half an hour to fully adjust the water quantity and quality.

4. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: The grid decontamination device in the impurity removal process of S1 comprises a body (1); It also comprises a filtering mechanism, which is installed inside the machine body (1) and is used to filter solid impurities from chemical pharmaceutical wastewater, and the filtering mechanism comprises a first filtering cartridge (2) fixedly connected to the inside of the machine body (1), and a second filtering cartridge (3) is rotatably connected inside the first filtering cartridge (2); a cleaning mechanism, the cleaning mechanism being installed inside the second filter cartridge (3) and being used for cleaning the inside of the second filter cartridge (3), the cleaning mechanism comprising a connecting rod (5) rotatably connected to the inside of the second filter cartridge (3) and a cleaning shovel (6) fixedly connected to the connecting rod (5) in an array, one side of the cleaning shovel (6) being in contact with the inner wall of the second filter cartridge (3); A pushing mechanism, the pushing mechanism being installed below the machine body (1) and being used to discharge solid impurities after filtration, the pushing mechanism comprising a feeding pipe (12) fixedly connected to the bottom of the machine body (1), a spiral pushing rod (13) being rotatably connected inside the feeding pipe (12), and a transmission mechanism being provided between one end of the pushing mechanism and the cleaning mechanism; A driving mechanism is installed on one side of the machine body (1) and is used to output power to the filtering mechanism and the cleaning mechanism. A linkage mechanism is provided between the driving mechanism and the filtering mechanism and the cleaning mechanism.

5. A method for treating wastewater from chemical pharmaceutical production according to claim 4, characterized in that: The driving mechanism comprises a motor frame (17) fixedly connected to one side of the machine body (1), a driving motor (18) being fixedly connected to the motor frame (17), and an output shaft of the driving motor (18) being fixedly connected to a first bevel gear (19).

6. A method for treating wastewater from chemical pharmaceutical production according to claim 4, characterized in that: The filtering mechanism further comprises a first filtering cartridge (2) having a filtering groove arrayed thereon, and a second filtering cartridge (3) having a plurality of filtering holes of different diameters arrayed thereon, the plurality of filtering holes being respectively indirectly connected to the filtering grooves.

7. A method for treating wastewater from chemical pharmaceutical production according to claim 4, characterized in that: The transmission mechanism comprises a first pulley (15) fixedly connected to one end of the connecting rod (5); one end of the spiral push rod (13) is fixedly connected to a second pulley (14) at a position corresponding to the first pulley (15); the second pulley (14) and the first pulley (15) are externally connected via a same belt (16).

8. A method for treating wastewater from chemical pharmaceutical production according to claim 4, characterized in that: The linkage mechanism comprises a transmission rod (8) rotatably connected to one side of the machine body (1); the transmission rod (8) is respectively fixedly connected to a first gear (9), a second gear (10) and a second bevel gear (20); one side of the second bevel gear (20) meshes with the first bevel gear (19) for transmission; the connecting rod (5) is fixedly connected to a first one-way gear (7); one side of the first one-way gear (7) meshes with the first gear (9) for rotation; one side of the second filter cartridge (3) is fixedly connected to a transmission sleeve (4); the transmission sleeve (4) is fixedly connected to a second one-way gear (11); one side of the second one-way gear (11) meshes with the second gear (10) for transmission; and the connecting rod (5) is movably sleeved inside the transmission sleeve (4).

9. A method for treating wastewater from chemical pharmaceutical production according to claim 4, characterized in that: A water inlet is provided at one end of the machine body (1), a water inlet pipe is fixedly connected to the water inlet, a first control valve is fixedly connected to the water inlet pipe, a plurality of drain outlets are provided on one side of the machine body (1), a plurality of drain outlets are fixedly connected to a plurality of drain pipes, a second control valve is fixedly connected to the plurality of drain pipes, and a plurality of support columns are fixedly connected to the bottom of the machine body (1).

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