A device for treating fermentation pharmaceutical wastewater

Abstract

The utility model discloses a kind of fermentation pharmaceutical wastewater treatment devices, it is related to sewage treatment technical field, mainly by unipolar three-dimensional electrode reactor, adjusting pool, dosing system, MABR reaction pool, sedimentation tank, ultraviolet disinfection pool, direct current power supply system and gas supply system composition;Unipolar three-dimensional electrode reactor's anode chamber fills particle electrode, cathode chamber sets up MABR membrane module, improve the biodegradability of wastewater by the synergistic effect between electrochemistry and biological process;Acidic material in adjusting pool and unipolar three-dimensional electrode reactor effluent, pH value is maintained at 7.5-8.5;Biological denitrification treatment uses MABR process, using the advantage of simultaneous nitrification and denitrification, improve denitrification efficiency;Finally through ultraviolet disinfection method, kill pathogenic microorganism in wastewater.The device uses multistage process synergistic effect, realizes the efficient, stable treatment of fermentation pharmaceutical wastewater.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a treatment device for fermentation-based pharmaceutical wastewater. Background Technology

[0002] Pollutants in fermentation-based pharmaceutical wastewater mainly originate from residual culture media, mycelium, metabolites, and organic solvents left over from the product fermentation process. This wastewater is complex in composition, high in organic matter concentration, biotoxic, poorly biodegradable, and exhibits significant quality fluctuations, making it a typical example of difficult-to-treat industrial wastewater. In recent years, with the rapid development of the fermentation-based pharmaceutical industry, traditional biochemical treatment processes have struggled to meet discharge standards, necessitating the optimization of multi-process combinations and enhancing synergy to improve treatment efficiency.

[0003] The three-dimensional electrode method builds upon the two-dimensional electrode method by adding a particle electrode between the two main electrodes. This particle electrode, during operation, becomes charged, forming multiple micro-electrolytic cells, acting as a third electrode. The particle electrode increases the reaction area, generating more ·OH radicals, which oxidize and decompose large organic molecules such as antibiotics and polycyclic aromatic hydrocarbons. Installing a membrane aerated bioreactor (MABR) module in the cathode chamber not only provides sufficient and uniform oxygen but also promotes microbial attachment and growth, increasing the biomass in the cathode chamber. Simultaneously, the introduction of a micro-electric field facilitates the enrichment of microorganisms capable of mineralizing intermediate products on the MABR membrane surface. This synergistic effect between electrochemical and biological processes improves the biodegradability of wastewater.

[0004] When particle electrodes fill the anode, the solution pH drops. The pH is maintained at 7.5-8.5 using an equalization tank to ensure the stability of subsequent biological denitrification treatment. The biological denitrification treatment employs the MABR process, whose advantage lies in the counter-current mass transfer of oxygen and liquid-phase pollutants, creating an oxygen concentration gradient within the biofilm. This achieves simultaneous nitrification and denitrification within a single reactor, improving denitrification efficiency. Fermentation-based pharmaceutical wastewater may contain pathogens and resistance genes, requiring deep disinfection. Ultraviolet radiation destroys DNA structure, preventing secondary pollution and ensuring sterile effluent before discharge. Utility Model Content

[0005] In summary, this invention provides a treatment device for fermentation-based pharmaceutical wastewater, mainly composed of a unipolar three-dimensional electrode reactor, an equalization tank, a dosing system, a MABR reactor, a sedimentation tank, an ultraviolet disinfection tank, a DC power supply system, and an air supply system. The anode chamber of the unipolar three-dimensional electrode reactor is filled with particle electrodes, and the cathode chamber is equipped with a MABR membrane module, improving the biodegradability of the wastewater through the synergistic effect between electrochemical and biological processes. The equalization tank neutralizes acidic substances in the effluent from the unipolar three-dimensional electrode reactor, maintaining the pH value at 7.5-8.5. Biological denitrification treatment employs the MABR process, utilizing its simultaneous nitrification and denitrification advantages to improve denitrification efficiency. Finally, ultraviolet disinfection is used to kill pathogenic microorganisms in the wastewater.

[0006] This utility model is achieved through the following technical solution:

[0007] A fermentation-based pharmaceutical wastewater treatment device is characterized by comprising a unipolar three-dimensional electrode reactor, an equalization tank, a dosing system, a MABR reactor, a sedimentation tank, an ultraviolet disinfection tank, a DC power supply system, and an air supply system. The inlet is located at the front end of the unipolar three-dimensional electrode reactor, and wastewater sequentially passes through the unipolar three-dimensional electrode reactor, equalization tank, MABR reactor, sedimentation tank, and ultraviolet disinfection tank. The outlet is located at the end of the ultraviolet disinfection tank. The DC power supply system consists of a DC power supply and wires, providing stable electrical energy to the electrodes of the unipolar three-dimensional electrode reactor. The air supply system mainly includes air supply equipment, pipelines, and valves, supplying air to the unipolar three-dimensional electrode reactor and the MABR reactor through the pipelines.

[0008] The unipolar three-dimensional electrode reactor includes an anode chamber and a cathode chamber, with an air distribution plate at the bottom and an aerator below the air distribution plate. An ion exchange membrane is installed between the anode chamber and the cathode chamber. An anode plate is installed in the anode chamber, and a particle electrode is placed between the anode plate and the ion exchange membrane. The cathode chamber includes a cathode plate, a membrane support, a MABR membrane module, and an aerator. The MABR membrane module is fixed on the membrane support. The aerators in both the anode and cathode chambers receive the gas from the outlet of the MABR membrane module through pipes, and the gas flow rate is adjusted by valves.

[0009] The equalization tank adjusts the pH value of the water through a dosing system.

[0010] The MABR reactor is equipped with MABR membrane modules, membrane supports and aerators. The MABR membrane modules are fixed on the membrane supports and the aerators receive the air from the outlet of the MABR membrane modules through pipes and adjust the air volume with valves.

[0011] 20%-50% of the sludge in the sedimentation tank flows into the MABR reactor through a sludge return pump, and 50%-80% of the remaining sludge is discharged through the sludge discharge system.

[0012] Ultraviolet light strips are installed at the bottom and around the perimeter of the ultraviolet disinfection pool.

[0013] Furthermore, the positive terminal of the DC power supply is connected to the anode plate, and the negative terminal is connected to the cathode plate. The anode plate is made of one of stainless steel, ruthenium-iridium-titanium mesh, aluminum, or graphite. The cathode plate is made of one of stainless steel, titanium mesh, copper-zinc, aluminum, or graphite.

[0014] Furthermore, the particle electrode is one of anthracite, columnar activated carbon, granular activated carbon, or nickel foam.

[0015] Furthermore, the dosing agent in the dosing system is one of sodium hydroxide, sodium carbonate, and sodium bicarbonate, and the pH value of the equalization tank is maintained at 7.5-8.5.

[0016] This invention discloses a treatment device for fermentation-based pharmaceutical wastewater. The anode chamber of a unipolar three-dimensional electrode reactor is filled with particle electrodes, and the cathode chamber is equipped with a MABR membrane module. The synergistic effect between electrochemical and biological processes improves the biodegradability of the wastewater. Acidic substances in the equalization tank and the effluent from the unipolar three-dimensional electrode reactor are maintained at a pH of 7.5-8.5. Biological denitrification uses the MABR process, leveraging its simultaneous nitrification and denitrification advantages to improve denitrification efficiency. Finally, ultraviolet disinfection is used to kill pathogenic microorganisms in the wastewater. This multi-stage synergistic process achieves efficient and stable treatment of fermentation-based pharmaceutical wastewater. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the elevation structure of this utility model.

[0018] Appendix Figure 2 This is a schematic diagram of the MABR membrane module structure of this utility model.

[0019] In the diagram: 1. Inlet, 2. Anode plate, 3. Particle electrode, 4. Aerator, 5. Ion exchange membrane, 6. Air distribution plate, 7. MABR membrane module, 8. Membrane support, 9. Cathode plate, 10. Unipolar three-dimensional electrode reactor, 11. Anode chamber, 12. Valve, 13. Cathode chamber, 14. DC power supply, 15. Air supply equipment, 16. Dosing system, 17. MABR reactor, 18. Sedimentation tank, 19. Ultraviolet disinfection tank, 20. Outlet, 21. Ultraviolet lamp strip, 22. Sludge removal system, 23. Sludge return pump, 24. Equalization tank. Detailed Implementation

[0020] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, please refer to... Figure 1-2 The present invention will be further described below with reference to specific embodiments.

[0021] A fermentation-based pharmaceutical wastewater treatment device, characterized in that it mainly consists of a unipolar three-dimensional electrode reactor 10, an equalization tank 24, a dosing system 16, a MABR reactor 17, a sedimentation tank 18, an ultraviolet disinfection tank 19, a DC power supply system, and an air supply system. The inlet 1 is located at the front end of the unipolar three-dimensional electrode reactor 10, and wastewater sequentially passes through the unipolar three-dimensional electrode reactor 10, the equalization tank 24, the MABR reactor 17, the sedimentation tank 18, and the ultraviolet disinfection tank 19. The outlet 20 is located at the end of the ultraviolet disinfection tank 19. The DC power supply system consists of a DC power supply 14 and wires, providing stable electrical energy to the electrodes of the unipolar three-dimensional electrode reactor 10. The air supply system mainly includes an air supply device 15, pipes, and valves 12, supplying air to the unipolar three-dimensional electrode reactor 10 and the MABR reactor 17 through pipes. The unipolar three-dimensional electrode reactor 10 has an anode chamber 11 and a cathode chamber 13, with an air distribution plate 6 at the bottom and an aerator 4 below the air distribution plate 6. The anode chamber 11 and the cathode chamber 13 are connected... An ion exchange membrane 5 is installed between the electrode chambers 13; an anode plate 2 is installed in the anode chamber 11, and a particle electrode 3 is placed between the anode plate 2 and the ion exchange membrane 5; a cathode plate 9, a membrane support 8, a MABR membrane module 7, and an aerator 4 are installed in the cathode chamber 13, with the MABR membrane module 7 fixed on the membrane support 8; the aerators 4 in both the anode chamber 11 and the cathode chamber 13 receive air from the outlet of the MABR membrane module 7 through pipes, and the air volume is adjusted by a valve 12; the pH value of the water is adjusted in the equalization tank 24 through a dosing system 16. The MABR reactor 17 is equipped with a MABR membrane module 7, a membrane support 8, and an aerator 4. The MABR membrane module 7 is fixed on the membrane support 8. The aerator 4 receives the air from the outlet of the MABR membrane module 7 through a pipe and adjusts the air volume using a valve 12. 20%-50% of the sludge in the sedimentation tank 18 flows into the MABR reactor 17 through the sludge return pump 23, and 50%-80% of the remaining sludge is discharged through the sludge discharge system 22. The ultraviolet disinfection tank 19 is equipped with ultraviolet lamp strips 21 at the bottom and around the perimeter.

[0022] The DC power supply 14 is connected to the anode plate 2 at its positive terminal and to the cathode plate 9 at its negative terminal. The anode plate 2 is made of one of the following: stainless steel plate, ruthenium-iridium-titanium mesh, aluminum plate, or graphite plate. The cathode plate 9 is made of one of the following: stainless steel plate, titanium mesh, copper-zinc plate, aluminum plate, or graphite plate. The particle electrode 3 is made of one of the following: anthracite, columnar activated carbon, granular activated carbon, or nickel foam. The chemical dosing system 16 uses one of the following: sodium hydroxide, sodium carbonate, or sodium bicarbonate. The pH value of the equalization tank 24 is maintained at 7.5-8.5.

[0023] The process flow of this utility model is as follows: wastewater is pumped into a unipolar three-dimensional electrode reactor 10 through inlet 1. In the unipolar three-dimensional electrode reactor 10, the biodegradability of the wastewater is improved through the synergistic effect between electrochemical and biological processes. The effluent from the unipolar three-dimensional electrode reactor 10 enters an equalization tank 24, where the pH value is maintained at 7.5-8.5. The effluent from the equalization tank 24 enters a MABR reactor 17, where denitrification is performed by controlling the dissolved oxygen concentration. The effluent from the MABR reactor 17 flows into a sedimentation tank 18 for solid-liquid separation and then enters an ultraviolet disinfection tank 19, where ultraviolet radiation kills pathogenic microorganisms in the wastewater. After ensuring sterility, the effluent is discharged from outlet 20. Part of the sludge from the sedimentation tank 18 is returned to the MABR reactor 17, and the remaining sludge is discharged through the sludge discharge system 22.

[0024] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope of this utility model, based on its technical solution and concept, should be included within the scope of protection of this utility model.

Claims

1. A treatment device for fermentation-based pharmaceutical wastewater, characterized in that: It mainly consists of a unipolar three-dimensional electrode reactor, an equalization tank, a dosing system, a MABR reactor, a sedimentation tank, an ultraviolet disinfection tank, a DC power supply system, and an air supply system. The inlet is located at the front end of the unipolar three-dimensional electrode reactor, and the wastewater passes sequentially through the unipolar three-dimensional electrode reactor, the equalization tank, the MABR reactor, the sedimentation tank, and the ultraviolet disinfection tank. The outlet is located at the end of the ultraviolet disinfection tank. The DC power supply system consists of a DC power supply and wires, providing stable electrical energy to the electrodes of the unipolar three-dimensional electrode reactor. The air supply system mainly includes air supply equipment, pipelines, and valves, supplying air to the unipolar three-dimensional electrode reactor and the MABR reactor through the pipelines. The unipolar three-dimensional electrode reactor includes an anode chamber and a cathode chamber, with an air distribution plate at the bottom and an aerator below the air distribution plate. An ion exchange membrane is installed between the anode chamber and the cathode chamber. An anode plate is installed in the anode chamber, and a particle electrode is placed between the anode plate and the ion exchange membrane. The cathode chamber includes a cathode plate, a membrane support, a MABR membrane module, and an aerator. The MABR membrane module is fixed on the membrane support. The aerators in both the anode and cathode chambers receive the gas from the outlet of the MABR membrane module through pipes, and the gas flow rate is adjusted by valves. The equalization tank adjusts the pH value of the water through a dosing system. The MABR reactor is equipped with MABR membrane modules, membrane supports and aerators. The MABR membrane modules are fixed on the membrane supports and the aerators receive the air from the outlet of the MABR membrane modules through pipes and adjust the air volume with valves. 20%-50% of the sludge in the sedimentation tank flows into the MABR reactor through a sludge return pump, and 50%-80% of the remaining sludge is discharged through the sludge discharge system. Ultraviolet light strips are installed at the bottom and around the perimeter of the ultraviolet disinfection pool.

2. The fermentation-based pharmaceutical wastewater treatment device according to claim 1, characterized in that: The positive terminal of the DC power supply is connected to the anode plate, and the negative terminal is connected to the cathode plate. The anode plate is made of one of stainless steel, ruthenium-iridium-titanium mesh, aluminum, or graphite. The cathode plate is made of one of stainless steel, titanium mesh, copper-zinc plate, aluminum, or graphite.

3. The fermentation-based pharmaceutical wastewater treatment device according to claim 1, characterized in that: The particle electrode is one of anthracite, columnar activated carbon, granular activated carbon, or nickel foam.

4. The fermentation-based pharmaceutical wastewater treatment device according to claim 1, characterized in that: The dosing system uses one of sodium hydroxide, sodium carbonate, and sodium bicarbonate as the reagent, and the pH value of the equalization tank is maintained at 7.5-8.5.

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