Biopharmaceutical wastewater treatment system

Abstract

The utility model relates to a biopharmaceutical wastewater treatment system which comprises a primary treatment unit, a secondary treatment unit and an ultrafiltration membrane unit, and the ultrafiltration membrane unit is used for filtering sewage discharged from a water producing pool and separating the sewage into recycled water and concentrated sewage; the sludge discharge unit is used for collecting sludge of the air flotation machine, the sedimentation tank, the middle tank and the pre-sedimentation tank; the dosing unit comprises a nutrition dosing device, an alkali dosing device, a coagulation dosing device and a flocculation dosing device; and the aeration unit is used for carrying out aeration treatment on the low-concentration adjusting tank, the high-concentration adjusting tank, the mixed flocculation tank, the anoxic tank, the first-stage aerobic tank, the second-stage aerobic tank, the third-stage aerobic tank, the middle tank and the membrane cleaning tank. According to the biological pharmaceutical wastewater treatment system disclosed by the embodiment of the invention, pharmaceutical wastewater with different concentrations can be fully and effectively treated through the primary treatment unit, the secondary treatment unit and the ultrafiltration membrane unit, so that a very good sewage treatment effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a biopharmaceutical wastewater treatment system. Background Art

[0002] Wastewater produced by the pharmaceutical industry accounts for a considerable proportion of the total amount of industrial wastewater, and the total amount of pollutant emissions also accounts for a considerable proportion. At present, the wastewater produced by pharmaceutical companies in industrial production has become one of the most difficult industrial wastewaters to treat due to its complex composition, high organic content, high toxicity, deep color and high salt content.

[0003] The wastewater generated by pharmaceutical companies when producing Chinese patent medicines or Western medicines is called pharmaceutical wastewater. According to different pharmaceutical methods, wastewater can be divided into biopharmaceutical wastewater and chemical pharmaceutical wastewater. The production process of drugs determines the characteristics of pharmaceutical wastewater. Due to the different types of drugs, different and complex production processes, many types of raw and auxiliary materials, strict quality control of raw materials and intermediates during the production process, low net material yield, and many by-products; pharmaceutical wastewater has large differences in composition, complex components, large amounts of pollutants, high COD, low and large fluctuations in the ratio of BOD5 to CODcr, poor biodegradability, many difficult-to-degrade substances, strong toxicity, intermittent discharge, large fluctuations in water volume, water quality and types of pollutants, etc., which brings great difficulties to governance, but the existing wastewater treatment equipment has low purification efficiency, cannot effectively treat sewage and wastewater of different concentrations, and cannot achieve good energy-saving effects. Utility Model Content

[0004] Based on this, the purpose of the utility model is to overcome the deficiencies of the prior art and provide a biopharmaceutical wastewater treatment system.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A biopharmaceutical wastewater treatment system, comprising:

[0007] A primary treatment unit, comprising a low-concentration water collection tank, a first low-concentration lifting pump, a low-concentration regulating tank, a second low-concentration lifting pump, an accident tank, an accident lifting pump, a high-concentration water collection tank, a first high-concentration lifting pump, a high-concentration regulating tank, a second high-concentration lifting pump, an air flotation machine, a flocculation tank and a sedimentation tank, wherein the low-concentration water collection tank, the first low-concentration lifting pump and the low-concentration regulating tank are connected in sequence, the discharge end of the first low-concentration lifting pump is also connected to the accident tank, the accident tank is connected to the low-concentration regulating tank and the high-concentration regulating tank respectively through the accident lifting pump, the high-concentration water collection tank, the first high-concentration lifting pump, the high-concentration regulating tank, the second high-concentration lifting pump, the air flotation machine, the flocculation tank and the sedimentation tank are connected in sequence, the discharge end of the sedimentation tank is connected to the low-concentration regulating tank, and the discharge end of the first high-concentration lifting pump is also connected to the accident tank;

[0008] A secondary treatment unit, comprising a hydrolysis acidification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a tertiary aerobic tank, a pre-sedimentation tank, an intermediate tank and a water production pump connected in sequence, wherein the discharge end of the water production pump is connected to the membrane cleaning tank and the water production tank respectively, and the low-concentration regulating tank is connected to the hydrolysis acidification tank through the second low-concentration lifting pump;

[0009] An ultrafiltration membrane unit, the ultrafiltration membrane unit is used to filter the sewage discharged from the water production pool and separate it into recycled water and concentrated sewage, the recycled water flows to a reuse water bucket, and the concentrated sewage flows to a secondary concentrated water bucket;

[0010] A sludge discharge unit, used for collecting sludge from the air flotation machine, sedimentation tank, intermediate tank and pre-sedimentation tank;

[0011] The dosing unit includes a nutrient dosing device, an alkali dosing device, a coagulation dosing device and a flocculation dosing device, wherein the nutrient dosing device is used to add nutrients to the anoxic tank, the alkali dosing device is used to add alkali to the mixed flocculation tank, the aerobic tank and the low concentration regulating tank, the coagulation dosing device is used to add coagulant to the flotation machine and the mixed flocculation tank, and the flocculation dosing device is used to add flocculant to the flotation machine and the mixed flocculation tank;

[0012] The aeration unit is used for aerating the low-concentration regulating tank, the high-concentration regulating tank, the mixed flocculation tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank, the tertiary aerobic tank, the intermediate tank and the membrane cleaning tank.

[0013] The biopharmaceutical wastewater treatment system of this embodiment can effectively treat pharmaceutical wastewater of different concentrations through the primary treatment unit, the secondary treatment unit and the ultrafiltration membrane unit, thereby achieving a good wastewater treatment effect.

[0014] As an embodiment, the ultrafiltration membrane unit includes an inlet pump, a precision filter, an ultrafiltration membrane assembly, a water production tank, a first-level booster pump, a first-level security filter, a first-level high-pressure pump, a first-level filter membrane assembly, a first-level concentrated water tank, a second-level booster pump, a second-level security filter, a second-level high-pressure pump and a second-level filter membrane assembly. The ultrafiltration membrane assembly, the first-level filter membrane assembly and the second-level filter membrane assembly all have a water inlet, a concentrated water outlet and a water production outlet. The drainage end of the water production tank is connected to the water inlet end of the water inlet pump, and the drainage end of the water inlet pump is connected to the water inlet of the ultrafiltration membrane assembly through the precision filter. The concentrated water outlet of the ultrafiltration membrane assembly is connected to the hydrolysis acidification tank. The production of the ultrafiltration membrane assembly The water inlet, water production tank, first-level booster pump, first-level security filter and water inlet of the first-level high-pressure pump are connected in sequence, the discharge end of the first-level high-pressure pump is respectively connected to the water inlet of the first-level filter membrane assembly and the water inlet of the second-level filter membrane assembly, the water production port of the first-level filter membrane assembly is connected to the recycling water bucket, the concentrate water port of the first-level filter membrane assembly, the first-level concentrate water bucket, the second-level booster pump, the second-level security filter and the water inlet of the second-level high-pressure pump are connected in sequence, the discharge end of the second-level high-pressure pump is connected to the water inlet of the second-level filter membrane assembly, the concentrate water port of the second-level filter membrane assembly is connected to the second-level concentrate water bucket, and the water production port of the second-level filter membrane assembly is connected to the recycling water bucket.

[0015] As an embodiment, the ultrafiltration membrane unit also includes a primary backwash pump, a chemical cleaning pump and a chemical cleaning barrel. The water inlet and the discharge end of the primary backwash pump are respectively connected to the water production tank and the water inlet of the ultrafiltration membrane assembly. The chemical cleaning barrel is connected to the water inlet of the secondary filter membrane assembly through the chemical cleaning pump. The dosing unit also includes a backwash dosing device and a chemical dosing device. The backwash dosing device is used to add drugs to the primary backwash pump, and the chemical dosing device is used to add drugs to the chemical cleaning barrel.

[0016] As an embodiment, the secondary treatment unit further includes a secondary backwash pump, the water inlet and outlet ends of the secondary backwash pump are respectively connected to the water production pool and the intermediate pool, and the backwash dosing device is also used to add drugs to the secondary backwash pump.

[0017] As an implementation manner, the discharge end of the second low-concentration lift pump is also connected to the low-concentration regulating tank, and the second high-concentration lift pump is also connected to the high-concentration regulating tank.

[0018] As an embodiment, the sludge discharge unit includes an air flotation sludge pump, a sedimentation sludge pump, a reflux pump and a sludge thickening tank. The sludge discharge end of the air flotation machine is connected to the sludge thickening tank through the air flotation sludge pump, the sludge discharge end of the sedimentation tank is connected to the sludge thickening tank through the sedimentation sludge pump, the sludge discharge ends of the pre-sedimentation tank and the intermediate tank are connected to the sludge thickening tank through the reflux pump, and the sludge discharge end of the reflux pump is also connected to the hydrolysis acidification tank, the anoxic tank and the primary aerobic tank respectively through a reflux pipe.

[0019] As an embodiment, the sludge discharge unit also includes a sludge dewatering device and a sludge dryer. The sludge dewatering device is used to dewater the sludge in the sludge thickening tank, and the sludge dryer is used to dry the sludge dehydrated by the sludge dewatering device. The flocculation and dosing device is used to add flocculants to the sludge dewatering device.

[0020] As an embodiment, the biopharmaceutical wastewater treatment system further includes a waste gas treatment unit, and the waste gas treatment unit is used to collect the waste gas generated by the biopharmaceutical wastewater treatment system and perform deodorization treatment.

[0021] As an embodiment, the waste gas treatment device includes an induced draft fan, a biological deodorization tower and a photolytic waste gas purifier connected in sequence, the induced draft fan is used to absorb waste gas, the biological deodorization tower is used to perform biological deodorization treatment on the waste gas, and the photolytic waste gas purifier is used to perform photolytic purification treatment on the waste gas.

[0022] As an implementation mode, the hydrolysis acidification tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank and the tertiary aerobic tank are all provided with soft fillers.

[0023] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a connection diagram of the primary processing unit in the embodiment of the present application;

[0025] Figure 2 This is a connection diagram of the secondary processing unit in the embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the connection of the ultrafiltration membrane unit in the embodiment of the present application;

[0027] Figure 4 This is a connection diagram of the mud discharge unit in the embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the structure of the exhaust gas treatment unit in the embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the structure of the dosing unit in the embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of an aeration unit in an embodiment of the present application;

[0031] Description of reference numerals:

[0032] 11. Low-concentration water collection tank; 12. First low-concentration lifting pump; 13. Low-concentration regulating tank; 14. Second low-concentration lifting pump; 15. Accident tank; 16. Accident lifting pump; 17. High-concentration water collection tank; 18. First high-concentration lifting pump; 19. High-concentration regulating tank; 20. Second high-concentration lifting pump; 21. Flotation machine; 22. Flocculation tank; 23. Sedimentation tank; 201. Hydrolysis acidification tank; 202. Anoxic tank; 203. Primary aerobic tank; 204. Secondary aerobic tank; 205. Tertiary aerobic tank; 206. Pre-sedimentation tank; 207. Intermediate tank; 208. Water production pump; 209. Membrane cleaning tank; 210. Water production tank; 211. Secondary backwash pump; 31. Recovery bucket; 32. Secondary concentrated water bucket; 33. Inlet pump; 34. Precision filter; 35. Ultrafiltration membrane assembly ; 36. Water production tank; 37. First-stage booster pump; 38. First-stage safety filter; 39. First-stage high-pressure pump; 40. First-stage filter membrane assembly; 41. First-stage concentrated water tank; 42. Second-stage booster pump; 43. Second-stage safety filter; 44. Second-stage high-pressure pump; 45. Second-stage filter membrane assembly; 46. First-stage backwash pump; 47. Chemical cleaning pump; 48. Chemical cleaning tank; 51. Nutrition dosing device; 52. Alkali dosing device; 53. Coagulation dosing device; 54. Flocculation dosing device; 55. Backwash dosing device; 56. Chemical dosing device; 57. Flotation sludge pump; 58. Sedimentation sludge pump; 59. Reflux pump; 60. Sludge thickening tank; 61. Sludge dewatering device; 62. Sludge dryer; 7. Aeration unit; 81. Draft fan; 82. Biological deodorization tower; 83. Photolysis waste gas purifier. DETAILED DESCRIPTION

[0033] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention.

[0034] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] See also Figures 1 to 7 The present application embodiment provides a biopharmaceutical wastewater treatment system, comprising:

[0036] The primary treatment unit includes a low-concentration water collection tank 11, a first low-concentration lifting pump 12, a low-concentration regulating tank 13, a second low-concentration lifting pump 14, an accident tank 15, an accident lifting pump 16, a high-concentration water collection tank 17, a first high-concentration lifting pump 18, a high-concentration regulating tank 19, a second high-concentration lifting pump 20, an air flotation machine 21, a flocculation tank 22 and a sedimentation tank 23. The low-concentration water collection tank 11, the first low-concentration lifting pump 12 and the low-concentration regulating tank 13 are connected in sequence, and the drainage of the first low-concentration lifting pump 12 The end is also connected to the accident pool 15, and the accident pool 15 is respectively connected to the low-concentration regulating pool 13 and the high-concentration regulating pool 19 through the accident lifting pump 16. The high-concentration water collection pool 17, the first high-concentration lifting pump 18, the high-concentration regulating pool 19, the second high-concentration lifting pump 20, the air flotation machine 21, the flocculation pool 22 and the sedimentation pool 23 are connected in sequence, and the drainage end of the sedimentation pool 23 is connected to the low-concentration regulating pool 13, and the drainage end of the first high-concentration lifting pump 18 is also connected to the accident pool 15;

[0037] The secondary treatment unit includes a hydrolysis acidification tank 201, an anoxic tank 202, a primary aerobic tank 203, a secondary aerobic tank 204, a tertiary aerobic tank 205, a pre-sedimentation tank 206, an intermediate tank 207 and a water production pump 208 which are connected in sequence, wherein the discharge end of the water production pump 208 is connected to a membrane cleaning tank 209 and a water production tank 210 respectively, and the low-concentration regulating tank 13 is connected to the hydrolysis acidification tank 201 through the second low-concentration lifting pump 14;

[0038] An ultrafiltration membrane unit, the ultrafiltration membrane unit is used to filter the sewage discharged from the water production pool 210 and separate it into recycled water and concentrated sewage, the recycled water flows to the reuse water bucket 31, and the concentrated sewage flows to the secondary concentrated water bucket 32;

[0039] A sludge discharge unit, used to collect sludge from the air flotation machine 21, the sedimentation tank 23, the intermediate tank 207 and the pre-sedimentation tank 206;

[0040] The dosing unit includes a nutrient dosing device 51, an alkali dosing device 52, a coagulation dosing device 53 and a flocculation dosing device 54, wherein the nutrient dosing device 51 is used to add nutrients to the anoxic tank 202, the alkali dosing device 52 is used to add alkali to the mixed flocculation tank 22, the aerobic tank and the low concentration regulating tank 13, the coagulation dosing device 53 is used to add coagulant to the flotation machine 21 and the mixed flocculation tank 22, and the flocculation dosing device 54 is used to add flocculant to the flotation machine 21 and the mixed flocculation tank 22;

[0041] The aeration unit 7 is used to aerate the low concentration regulating tank 13, the high concentration regulating tank 19, the flocculation tank 22, the anoxic tank 202, the primary aerobic tank 203, the secondary aerobic tank 204, the tertiary aerobic tank 205, the intermediate tank 207 and the membrane cleaning tank 209.

[0042] It can be understood that in this embodiment, the communication between various devices / components can be achieved by using pipelines or through through holes. Those skilled in the art can choose to use a suitable method to connect the above-mentioned components to each other according to actual conditions, which is not described in detail here.

[0043] The biopharmaceutical wastewater treatment system of this embodiment can effectively treat pharmaceutical wastewater of different concentrations through the primary treatment unit, the secondary treatment unit and the ultrafiltration membrane unit, thereby achieving a good wastewater treatment effect.

[0044] The working process of each sewage treatment unit is described below:

[0045] Primary processing unit

[0046] The primary treatment unit can pre-treat sewage of different concentrations, wherein the sewage of different concentrations generated in the biopharmaceutical process is classified, low-concentration sewage is discharged into the low-concentration water collection tank 11, high-concentration sewage is discharged into the high-concentration water collection tank 17, and accident polluted water is discharged into the accident tank 15; the first low-concentration lifting pump 12 can extract the sewage in the low-concentration water collection tank 11 into the low-concentration regulating tank 13, and the sewage is aerated by the aeration unit 7 in the low-concentration regulating tank 13 to adjust the water volume and homogenize the water quality. At the same time, the alkali dosing device 52 adds alkali to the low-concentration regulating tank 13 to perform an alkalization reaction and adjust its pH value. The first high-concentration lifting pump 18 can The sewage in the high-concentration water collection tank 17 is pumped into the high-concentration regulating tank 19, and is aerated by the aeration unit 7 in the high-concentration regulating tank 19 to adjust the water volume and equalize the water quality; when the accident sewage is discharged into the accident tank 15, according to the pH value in the accident tank 15, the sewage in the low-concentration water collection tank 11 can be added to the accident tank 15 through the first low-concentration boost pump 12 for mixing and adjusting the concentration, or the sewage in the high-concentration water collection tank 17 can be added to the accident tank 15 through the first high-concentration boost pump 18 for mixing and adjusting the concentration. The regulated sewage in the accident tank 15 can be discharged into the high-concentration regulating tank 19 or the low-concentration regulating tank 13 through the accident boost pump 16.

[0047] The second high-concentration lifting pump 20 can pump the sewage in the high-concentration regulating tank 19 into the flotation machine 21. In the flotation machine 21, the oil, protein, SS, etc. in the sewage react with the added PAC (coagulant) and PAM (flocculant) to form flocs, and combine with the microbubbles generated by flotation to form scum, which is scraped off to achieve the purpose of separating the various phases in the emulsified oil. The effluent of the flotation machine 21 flows into the flocculation tank 22. The sewage in the flocculation tank 22 first reacts with the added alkali and PAC, and then reacts with PAM. The reaction is carried out to further remove most of the organic matter in the wastewater, reduce the sewage concentration, and alleviate the pressure of subsequent process treatment. At the same time, the aeration unit 7 aerates the sewage in the flocculation tank 22 to homogenize the water quality. The effluent from the flocculation tank 22 flows into the sedimentation tank 23. The sludge in the sewage in the sedimentation tank 23 settles in the mud hopper at the bottom of the tank by gravity, and the supernatant is discharged into the low-concentration regulating tank 13 through a pipeline. Finally, the second low-concentration lifting pump 14 pumps the sewage from the low-concentration regulating tank 13 into the hydrolysis acidification tank 201 of the secondary treatment unit.

[0048] Secondary processing unit

[0049] The secondary treatment unit can further purify the sewage from the primary treatment unit. First, the hydrolysis acidification tank 201 receives the sewage discharged from the second low-concentration lift pump 14. The sewage is pre-acidified by anoxic bacteria in the hydrolysis acidification tank 201. The sewage degrades the macromolecular organic matter into small molecular organic matter through the microbial action of anoxic bacteria, and finally converts into methane, carbon dioxide, etc. Then the sewage flows from the hydrolysis acidification tank 201 into the anoxic tank 202, and decomposes the organic matter with the nutrients of the nutrient dosing device 51 and anaerobic microorganisms, degrading the organic matter into simpler organic acids, ammonia nitrogen and other substances, while removing nitrogen and phosphorus: the anaerobic microorganisms in the anoxic tank 202 can also perform denitrification, reduce the nitrate nitrogen in the sewage into nitrogen gas, and further convert ammonia nitrogen into gaseous discharge. This helps to remove nutrients such as nitrogen and phosphorus in the sewage and reduce the risk of eutrophication of the water body. Aeration treatment is also performed in the anoxic tank 202.

[0050] Next, the sewage flows out of the anoxic tank 202 and enters the primary aerobic tank 203, the secondary aerobic tank 204 and the tertiary aerobic tank 205 in sequence, where the wastewater utilizes the metabolism of aerobic microorganisms to remove most of the organic pollutants, and after the total nitrogen is removed by nitrification and denitrification, the effluent flows by gravity into the pre-sedimentation tank 206, where the sewage can also be aerated in the primary aerobic tank 203, the secondary aerobic tank 204 and the tertiary aerobic tank 205. In the pre-sedimentation tank 206, the sludge in the sewage settles in the mud bucket at the bottom of the tank by gravity, and the upper clear water flows into the middle tank 207, where it is aerated.

[0051] Next, according to the pollution condition of the water in the intermediate tank 207, if the pollution degree in the intermediate tank 207 is low, the sewage in the intermediate tank 207 is pumped to the membrane cleaning tank 209 through the water production pump 208, and discharged after membrane filtration; if the pollution degree in the intermediate tank 207 is high, the sewage in the intermediate tank 207 is pumped to the water production tank 210 through the water production pump 208 for the next step of filtration treatment by the ultrafiltration membrane unit.

[0052] The pipeline between the hydrolysis acidification tank 201 and the anoxic tank 202 is also connected to a return pipe to the low concentration regulating tank 13.

[0053] Ultrafiltration membrane unit

[0054] The ultrafiltration membrane unit is used to filter the sewage discharged from the water production pool 210 and separate it into recycled water and concentrated sewage. The recycled water flows to the reuse water bucket 31, and the concentrated sewage flows to the secondary concentrated water bucket 32, so as to further purify the sewage of the water production pool 210.

[0055] Specifically, the ultrafiltration membrane unit of this embodiment includes a water inlet pump 33, a precision filter 34, an ultrafiltration membrane assembly 35, a water production tank 36, a first-level booster pump 37, a first-level security filter 38, a first-level high-pressure pump 39, a first-level filter membrane assembly 40, a first-level concentrated water barrel 41, a second-level booster pump 42, a second-level security filter 43, a second-level high-pressure pump 44 and a second-level filter membrane assembly 45. The ultrafiltration membrane assembly 35, the first-level filter membrane assembly 40 and the second-level filter membrane assembly 45 all have a water inlet, a concentrated water outlet and a water production outlet. The ultrafiltration membrane assembly 35, the first-level filter membrane assembly 40 and the second-level filter membrane assembly 45 can filter sewage and separate the sewage into concentrated water and recycled water. The drainage end of the water production pool 210 is connected to the water inlet end of the water inlet pump 33, the drainage end of the water inlet pump 33 is connected to the water inlet of the ultrafiltration membrane assembly 35 through the precision filter 34, the concentrated water outlet of the ultrafiltration membrane assembly 35 is connected to the hydrolysis acidification pool 201, the water production outlet, water production tank 36, primary booster pump 37, primary security filter 38 and water inlet end of the primary high-pressure pump 39 of the ultrafiltration membrane assembly 35 are connected in sequence, and the drainage end of the primary high-pressure pump 39 is respectively connected to the water inlet and The water inlet of the secondary filter membrane assembly 45 and the water outlet of the primary filter membrane assembly 40 are connected to the recycling water bucket 31, the concentrated water outlet of the primary filter membrane assembly 40, the primary concentrated water bucket 41, the secondary booster pump 42, the secondary security filter 43 and the water inlet of the secondary high-pressure pump 44 are connected in sequence, the discharge end of the secondary high-pressure pump 44 is connected to the water inlet of the secondary filter membrane assembly 45, the concentrated water outlet of the secondary filter membrane assembly 45 is connected to the secondary concentrated water bucket 32, and the water outlet of the secondary filter membrane assembly 45 is connected to the recycling water bucket 31.

[0056] The water inlet pump 33 extracts the sewage from the water production tank 210 and inputs it to the water inlet of the ultrafiltration membrane assembly 35 after preliminary filtration through the precision filter 34. The sewage is filtered in the ultrafiltration membrane assembly 35 and separated into the first concentrated sewage and the first sewage. The first concentrated sewage flows back to the hydrolysis acidification tank 201 for further treatment, and the first sewage enters the water production tank 36. According to the pH value of the water production tank 36, the first filter membrane assembly 40 and the second filter membrane assembly 45 can be selected to filter the first sewage in a series treatment mode or a parallel treatment mode.

[0057] In the series treatment mode, the first sewage in the water production tank 36 is pressurized by the first-level booster pump 37, filtered by the first-level security filter 38, and then enters the water inlet of the first-level filter membrane assembly 40 after passing through the first-level high-pressure pump 39. The first-level filter membrane assembly 40 filters and separates the first sewage into first clean water and first concentrated sewage. The first clean water enters the recycling bucket 31, and the first concentrated sewage enters the first concentrated water bucket 41, and enters the second-level security filter 43 after being pressurized by the second-level booster pump 42, and then enters the water inlet of the second-level filter membrane assembly 45 after passing through the second-level high-pressure pump 44. The second-level filter membrane assembly 45 filters and separates the first concentrated sewage into second clean water and second concentrated sewage again, and the second clean water enters the recycling bucket 31, and the second concentrated sewage enters the second-level concentrated water bucket 32, and is finally evaporated and concentrated. Among them, the first clean water and the second clean water in the recycling bucket 31 can be recycled and are clean water that has been completely decontaminated.

[0058] In the parallel processing mode, the first sewage in the water production tank 36 is pressurized by the first-level booster pump 37, filtered by the first-level security filter 38, and then passes through the first-level high-pressure pump 39 to enter the water inlet of the first-level filter membrane assembly 40 and the water inlet of the second-level filter membrane assembly 45 respectively. The first-level filter membrane assembly 40 filters the first sewage to form the first clean water, and the second-level filter membrane assembly 45 filters the first sewage to form the second clean water. Both the first clean water and the second clean water enter the recycling water bucket 31.

[0059] It can be understood that after the wastewater generated by biopharmaceuticals is treated through the above-mentioned primary treatment unit, secondary treatment unit and ultrafiltration membrane unit, the water can be recycled for reuse, and its pollution removal effect is good and the efficiency is high.

[0060] Preferably, in this embodiment, the ultrafiltration membrane unit further includes a primary backwash pump 46, a chemical cleaning pump 47 and a chemical cleaning barrel 48, the water inlet and the discharge end of the primary backwash pump 46 are respectively connected to the water inlet of the water production tank 36 and the ultrafiltration membrane assembly 35, the chemical cleaning barrel 48 is connected to the water inlet of the secondary filter membrane assembly 45 through the chemical cleaning pump 47, and the dosing unit further includes a backwash dosing device 55 and a chemical dosing device 56, the backwash dosing device 55 is used to add drugs to the primary backwash pump 46, and the chemical dosing device 56 is used to add drugs to the chemical cleaning barrel 48. The primary backwash pump 46 can extract the sewage from the water production tank 36 back to the water inlet of the ultrafiltration membrane assembly 35 for backwash filtration again. The chemical cleaning barrel 48 passes the chemical agent to the water inlet of the secondary filter membrane assembly 45 through the chemical cleaning pump 47 to clean the secondary filter membrane assembly 45.

[0061] Preferably, the secondary treatment unit further comprises a secondary backwash pump 211, the water inlet and the discharge end of the secondary backwash pump 211 are respectively connected to the water production pool 210 and the intermediate pool 207, and the backwash dosing device 55 is also used to add drugs to the secondary backwash pump 211. The primary backwash pump 46 can pump the sewage from the water production pool 210 back to the intermediate pool 207 for further treatment.

[0062] Preferably, the discharge end of the second low-concentration lifting pump 14 is also connected to the low-concentration regulating tank 13, so that the sewage in the low-concentration regulating tank 13 can be promoted to circulate and fully react with the alkali. The second high-concentration lifting pump 20 is also connected to the high-concentration regulating tank 19, so that the sewage in the low-high-concentration regulating tank 19 can be promoted to circulate.

[0063] Specifically, in this embodiment, the sludge discharge unit includes an air flotation sludge discharge pump 57, a sedimentation sludge discharge pump 58, a return pump 59 and a sludge thickening tank 60. The sludge discharge end of the air flotation machine 21 is connected to the sludge thickening tank 60 through the air flotation sludge discharge pump 57, the sludge discharge end of the sedimentation tank 23 is connected to the sludge thickening tank 60 through the sedimentation sludge discharge pump 58, the sludge discharge ends of the pre-sedimentation tank 206 and the intermediate tank 207 are connected to the sludge thickening tank 60 through the return pump 59, and the sludge discharge end of the return pump 59 is also connected to the hydrolysis acidification tank 201, the anoxic tank 202 and the primary aerobic tank 203 through a return pipe. Since the sludge is still mixed with sewage, the return pump 59 can send the sludge back to the hydrolysis acidification tank 201, the anoxic tank 202 and the primary aerobic tank 203.

[0064] Preferably, the sludge discharge unit further comprises a sludge dewatering device 61 and a sludge drying machine 62. The sludge dewatering device 61 is used to dewater the sludge in the sludge thickening tank 60, and the sludge drying machine 62 is used to dry the sludge dewatered by the sludge dewatering device 61. After drying, the sludge can be recycled. The flocculation and dosing device 54 is used to add flocculants to the sludge dewatering device 61 to promote faster dehydration of the sludge.

[0065] Preferably, the biopharmaceutical wastewater treatment system further comprises a waste gas treatment unit, which is used to collect the waste gas generated by the biopharmaceutical wastewater treatment system and perform deodorization treatment. By such an arrangement, it is also possible to prevent the odor generated during the sewage treatment process from polluting the air, thereby improving the environmental friendliness of the treatment process. The waste gas treatment device comprises an induced draft fan 81, a biological deodorization tower 82 and a photolysis waste gas purifier 83 connected in sequence, wherein the induced draft fan 81 is used to absorb waste gas, the biological deodorization tower 82 is used to perform biological deodorization treatment on waste gas, and the photolysis waste gas purifier 83 is used to perform photolysis purification treatment on waste gas.

[0066] Preferably, the hydrolysis acidification tank 201, the anoxic tank 202, the primary aerobic tank 203, the secondary aerobic tank 204 and the tertiary aerobic tank 205 are all provided with soft fillers. The soft fillers have the advantages of large specific surface area, high utilization rate, variable gaps without blockage, wide application range, low cost, low freight, etc., and can make the water body contact with a large amount of gas. This is conducive to the dissolution and exchange of oxygen in the water body and improves the oxygen content of the water body.

[0067] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model manual self-centering vise. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A biopharmaceutical wastewater treatment system, It is characterized in that include: A primary treatment unit, comprising a low-concentration water collection tank, a first low-concentration lifting pump, a low-concentration regulating tank, a second low-concentration lifting pump, an accident tank, an accident lifting pump, a high-concentration water collection tank, a first high-concentration lifting pump, a high-concentration regulating tank, a second high-concentration lifting pump, an air flotation machine, a flocculation tank and a sedimentation tank, wherein the low-concentration water collection tank, the first low-concentration lifting pump and the low-concentration regulating tank are connected in sequence, the discharge end of the first low-concentration lifting pump is also connected to the accident tank, the accident tank is connected to the low-concentration regulating tank and the high-concentration regulating tank respectively through the accident lifting pump, the high-concentration water collection tank, the first high-concentration lifting pump, the high-concentration regulating tank, the second high-concentration lifting pump, the air flotation machine, the flocculation tank and the sedimentation tank are connected in sequence, the discharge end of the sedimentation tank is connected to the low-concentration regulating tank, and the discharge end of the first high-concentration lifting pump is also connected to the accident tank; A secondary treatment unit, comprising a hydrolysis acidification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a tertiary aerobic tank, a pre-sedimentation tank, an intermediate tank and a water production pump connected in sequence, wherein the discharge end of the water production pump is connected to the membrane cleaning tank and the water production tank respectively, and the low-concentration regulating tank is connected to the hydrolysis acidification tank through the second low-concentration lifting pump; An ultrafiltration membrane unit, the ultrafiltration membrane unit is used to filter the sewage discharged from the water production pool and separate it into recycled water and concentrated sewage, the recycled water flows to a reuse water bucket, and the concentrated sewage flows to a secondary concentrated water bucket; A sludge discharge unit, used for collecting sludge from the air flotation machine, sedimentation tank, intermediate tank and pre-sedimentation tank; The dosing unit includes a nutrient dosing device, an alkali dosing device, a coagulation dosing device and a flocculation dosing device, wherein the nutrient dosing device is used to add nutrients to the anoxic tank, the alkali dosing device is used to add alkali to the mixed flocculation tank, the aerobic tank and the low concentration regulating tank, the coagulation dosing device is used to add coagulant to the flotation machine and the mixed flocculation tank, and the flocculation dosing device is used to add flocculant to the flotation machine and the mixed flocculation tank; The aeration unit is used for aerating the low-concentration regulating tank, the high-concentration regulating tank, the mixed flocculation tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank, the tertiary aerobic tank, the intermediate tank and the membrane cleaning tank.

2. The biopharmaceutical wastewater treatment system according to claim 1, Features: The ultrafiltration membrane unit comprises an inlet pump, a precision filter, an ultrafiltration membrane assembly, a water production tank, a first-level booster pump, a first-level security filter, a first-level high-pressure pump, a first-level filter membrane assembly, a first-level concentrated water tank, a second-level booster pump, a second-level security filter, a second-level high-pressure pump and a second-level filter membrane assembly. The ultrafiltration membrane assembly, the first-level filter membrane assembly and the second-level filter membrane assembly all have a water inlet, a concentrated water outlet and a water production outlet. The drainage end of the water production tank is connected to the water inlet end of the water inlet pump, and the drainage end of the water inlet pump is connected to the water inlet of the ultrafiltration membrane assembly through the precision filter. The concentrated water outlet of the ultrafiltration membrane assembly is connected to the hydrolysis acidification tank. The water production outlet, the production outlet and the water outlet of the ultrafiltration membrane assembly are connected to the water outlet of the ultrafiltration membrane assembly. The water inlet ends of the water tank, the first-level booster pump, the first-level security filter and the first-level high-pressure pump are connected in sequence, the discharge end of the first-level high-pressure pump is respectively connected to the water inlet of the first-level filter membrane assembly and the water inlet of the second-level filter membrane assembly, the water production port of the first-level filter membrane assembly is connected to the recycling water bucket, the concentrate water port of the first-level filter membrane assembly, the first-level concentrate water bucket, the second-level booster pump, the second-level security filter and the water inlet end of the second-level high-pressure pump are connected in sequence, the discharge end of the second-level high-pressure pump is connected to the water inlet of the second-level filter membrane assembly, the concentrate water port of the second-level filter membrane assembly is connected to the second-level concentrate water bucket, and the water production port of the second-level filter membrane assembly is connected to the recycling water bucket.

3. The biopharmaceutical wastewater treatment system according to claim 2, Features: The ultrafiltration membrane unit also includes a primary backwash pump, a chemical cleaning pump and a chemical cleaning barrel. The water inlet and the discharge end of the primary backwash pump are respectively connected to the water production tank and the water inlet of the ultrafiltration membrane assembly. The chemical cleaning barrel is connected to the water inlet of the secondary filter membrane assembly through the chemical cleaning pump. The dosing unit also includes a backwash dosing device and a chemical dosing device. The backwash dosing device is used to add drugs to the primary backwash pump, and the chemical dosing device is used to add drugs to the chemical cleaning barrel.

4. The biopharmaceutical wastewater treatment system according to claim 3, Features: The secondary treatment unit also includes a secondary backwash pump, the water inlet end and the discharge end of the secondary backwash pump are respectively connected to the water production pool and the intermediate pool, and the backwash dosing device is also used to add drugs to the secondary backwash pump.

5. The biopharmaceutical wastewater treatment system according to claim 1, Features: The discharge end of the second low-concentration lift pump is also connected to the low-concentration regulating tank, and the second high-concentration lift pump is also connected to the high-concentration regulating tank.

6. The biopharmaceutical wastewater treatment system according to claim 1, Features: The sludge discharge unit includes an air flotation sludge discharge pump, a sedimentation sludge discharge pump, a reflux pump and a sludge thickening tank. The sludge discharge end of the air flotation machine is connected to the sludge thickening tank through the air flotation sludge discharge pump, the sludge discharge end of the sedimentation tank is connected to the sludge thickening tank through the sedimentation sludge discharge pump, the sludge discharge ends of the pre-sedimentation tank and the intermediate tank are connected to the sludge thickening tank through the reflux pump, and the sludge discharge end of the reflux pump is also connected to the hydrolysis acidification tank, the anoxic tank and the primary aerobic tank respectively through a reflux pipe.

7. The biopharmaceutical wastewater treatment system according to claim 6, Features: The sludge discharge unit also includes a sludge dewatering device and a sludge dryer. The sludge dewatering device is used to dewater the sludge in the sludge thickening tank, and the sludge dryer is used to dry the sludge dewatered by the sludge dewatering device. The flocculation and dosing device is used to add flocculants to the sludge dewatering device.

8. The biopharmaceutical wastewater treatment system according to claim 1, Features: It also includes a waste gas treatment unit, which is used to collect the waste gas generated by the biopharmaceutical wastewater treatment system and perform deodorization treatment.

9. The biopharmaceutical wastewater treatment system according to claim 8, Features: The waste gas treatment device comprises an induced draft fan, a biological deodorization tower and a photolytic waste gas purifier which are connected in sequence. The induced draft fan is used to absorb waste gas, the biological deodorization tower is used to perform biological deodorization treatment on waste gas, and the photolytic waste gas purifier is used to perform photolytic purification treatment on waste gas.

10. The biopharmaceutical wastewater treatment system according to any one of claims 1 to 9, Features: The hydrolysis acidification tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank and the tertiary aerobic tank are all provided with soft fillers.

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