Biopharmaceutical wastewater treatment device

Abstract

The utility model discloses a biological pharmaceutical wastewater treatment device in the technical field of sewage treatment. Comprising a wastewater adjusting tank, a first-stage PH adjusting tank, a first-stage Fenton oxidation tank, a first-stage coagulation tank, a first-stage flocculation tank, a first-stage sedimentation tank, a first-stage neutralization tank, a first-stage AAO treatment system, a first-stage biochemical sedimentation tank, a second-stage AAO treatment system and a second-stage biochemical sedimentation tank which are connected in sequence, and a sludge concentration tank; the Fenton oxidation is adopted as pretreatment, macromolecular organic matters are decomposed into micromolecular organic matters to improve the biodegradability of wastewater, and then the wastewater is treated by a two-stage AA0 process, so that the sewage is fully purified, the treatment effect on COD (Chemical Oxygen Demand), ammonia nitrogen, total nitrogen and total phosphorus is better, the sludge generation amount is small, the medicament consumption amount is small, and the treatment cost is low. The treatment cost is obviously reduced.

Description

Technical Field

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

[0002] Biomedical technology is a comprehensive technology based on modern life science theories, using organisms and their components, through genetic engineering, cell engineering, fermentation engineering, enzyme engineering and other biotechnological means to develop and produce pharmaceutical products. In the pharmaceutical process of embryotoxic inactivated vaccines, cytotoxic live vaccines, attenuated live vaccines, bacterial inactivated vaccines, cell suspension culture inactivated vaccines and cell inactivated vaccines, biological fermentation and cell culture will be carried out, which will use / or produce biologically active tissue cell components or substances containing biological toxicity. The intermediates / waste liquids produced in these production processes have the following characteristics: complex material composition, high content of dissolved organic matter, high nitrogen and phosphorus concentrations, microorganisms and large pH fluctuations.

[0003] At present, the existing biopharmaceutical wastewater treatment mainly adopts Fenton oxidation method, which can generate strong oxidizing hydroxyl radicals, and generate organic free radicals with refractory organic matter in aqueous solution to destroy its structure and finally oxidize and decompose. However, if only relying on Fenton oxidation treatment, the consumption of reagents is very large, and a large amount of sludge will be produced in the end, which is costly and has poor treatment effect. Utility Model Content

[0004] The utility model aims to provide a biopharmaceutical wastewater treatment device, which solves the technical problem of poor biopharmaceutical wastewater treatment effect in the prior art.

[0005] The utility model discloses a biopharmaceutical wastewater treatment device, comprising: a wastewater regulating tank, a primary PH regulating tank, a primary Fenton oxidation tank, a primary coagulation tank, a primary flocculation tank, a primary sedimentation tank, a primary neutralization tank, a primary AAO treatment system, a primary biochemical sedimentation tank, a secondary AAO treatment system and a secondary biochemical sedimentation tank connected in sequence;

[0006] And, a sludge thickening tank is used to receive the precipitated sludge produced by the primary sedimentation tank, the primary biochemical sedimentation tank and the secondary biochemical sedimentation tank, and discharge it after dehydration and concentration.

[0007] The present application adopts Fenton oxidation as a pretreatment to decompose macromolecular organic matter into small molecular organic matter first to improve the biodegradability of wastewater, and then undergoes a two-stage AA0 process to fully complete the purification of sewage. It has better treatment effects on COD, ammonia nitrogen, total nitrogen and total phosphorus, and has a small amount of sludge generated and a small amount of reagents consumed, which significantly reduces the treatment cost.

[0008] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0009] Preferably, the primary AAO treatment system comprises: a primary anaerobic tank, a primary anoxic tank and a primary aerobic tank connected in sequence;

[0010] Among them, the mixed liquid part of the primary aerobic tank is returned to the primary anoxic tank, and the precipitated sludge part of the primary biochemical sedimentation tank is returned to the primary anaerobic tank; adopting this scheme, the functions of organic matter removal, nitrification and denitrification, phosphorus removal, etc. can be completed simultaneously.

[0011] Preferably, the secondary AAO treatment system comprises: a secondary anoxic tank, a secondary anaerobic tank and a secondary aerobic tank connected in sequence;

[0012] Part of the mixed liquor in the secondary aerobic tank is returned to the secondary anoxic tank, and part of the precipitated sludge in the secondary biochemical sedimentation tank is returned to the secondary anaerobic tank. By adopting this scheme, the secondary anoxic tank is placed in front, which avoids the microorganisms in the primary aerobic tank from directly entering the secondary anaerobic tank, thereby avoiding the death of excessive microorganisms. Through the transition of the anoxic tank, the biological activity is improved and the treatment effect is improved.

[0013] Preferably, the secondary biochemical sedimentation tank is also connected in sequence with a secondary pH adjustment tank, a secondary Fenton oxidation tank, a secondary coagulation tank, a secondary flocculation tank, a secondary sedimentation tank and a secondary neutralization tank;

[0014] Among them, the precipitated sludge in the secondary sedimentation tank is transported to the sludge thickening tank; by adopting this scheme, a secondary safeguard measure is added, so that when the two-stage AA0 process is unstable or the incoming water concentration is high, the safeguard measure can be activated to ensure that the sewage can meet the discharge standards.

[0015] Preferably, the wastewater regulating tank is provided with a lifting pump, a first liquid level meter, a first submersible mixer and an electromagnetic flowmeter; the adoption of this solution ensures that the wastewater regulating tank can operate stably and efficiently, improves the sewage treatment effect, and improves the operational safety of sewage treatment.

[0016] Preferably, the first-level neutralization tank and the second-level neutralization tank are both provided with a first sulfuric acid metering pump, an online pH meter and an air stirring device; by adopting this solution, the neutralization tank can stably and efficiently complete the adjustment of the pH value, thereby improving the treatment efficiency and treatment quality and ensuring the stability of the sewage treatment process.

[0017] Preferably, the sludge thickening tank is provided with a first central guide tube, a screw pump and a second liquid level gauge; by adopting this solution, the sludge thickening tank can stably and efficiently complete the concentrated sedimentation of the sludge, thereby improving the treatment efficiency and treatment quality, thereby ensuring the effective concentration and treatment of the sludge.

[0018] Preferably, the first-level biochemical sedimentation tank and the second-level biochemical sedimentation tank are both provided with a second central guide tube, a water outlet weir and a mud pump; by adopting this solution, the biochemical sedimentation tank can stably and efficiently purify the sewage, improve the treatment efficiency and treatment quality, help maintain the normal operation of the equipment, and extend the service life of the equipment.

[0019] Preferably, the primary AAO treatment system and the secondary AAO treatment system are both equipped with a sludge return pump, a dissolved oxygen meter, an aeration device, a second submersible mixer, a nutrient metering pump and a rotor flowmeter; by adopting this solution, the AAO process can be carried out efficiently and stably, ensuring that the treatment system can efficiently remove organic matter and pollutants such as nitrogen and phosphorus, and achieve the expected treatment effect.

[0020] Preferably, the first-level pH regulating tank and the second-level pH regulating tank are both provided with ferrous metering pumps; the first-level Fenton oxidation tank and the second-level Fenton oxidation tank are both provided with hydrogen peroxide metering pumps; the first-level coagulation tank and the second-level coagulation tank are both provided with sodium hydroxide metering pumps; the first-level flocculation tank and the second-level flocculation tank are both provided with PAM metering pumps; the first-level neutralization tank and the second-level neutralization tank are both provided with a second sulfuric acid metering pump; by adopting this scheme, various solutions can be added in a timely and quantitative manner, thereby improving the treatment efficiency and effect, and having high stability and reliability.

[0021] Through the above technical solution, the utility model achieves the following beneficial effects:

[0022] 1. This application uses Fenton oxidation as a pretreatment to decompose macromolecular organic matter into small molecular organic matter first to improve the biodegradability of wastewater, and then undergoes a two-stage AA0 process to fully purify the sewage. It has better treatment effects on COD, ammonia nitrogen, total nitrogen and total phosphorus, and has a small amount of sludge produced and a small amount of reagents consumed, which significantly reduces the treatment cost;

[0023] 2. This application sets up a secondary pH adjustment tank, a secondary Fenton oxidation tank, a secondary coagulation tank, a secondary flocculation tank, a secondary sedimentation tank and a secondary neutralization tank as secondary safeguard measures, so that when the two-stage AA0 process is unstable or the incoming water concentration is high, the safeguard measures can be activated to ensure that the sewage can meet the discharge standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the biopharmaceutical wastewater treatment device according to an embodiment of the utility model;

[0026] Description of reference numerals:

[0027] 1. Wastewater regulating tank; 2. Primary PH regulating tank; 3. Primary Fenton oxidation tank; 4. Primary coagulation tank; 5. Primary flocculation tank; 6. Primary sedimentation tank; 7. Primary neutralization tank; 8. Primary AAO treatment system; 9. Primary biochemical sedimentation tank; 10. Secondary AAO treatment system; 11. Secondary biochemical sedimentation tank; 12. Sludge thickening tank; 13. Secondary PH regulating tank; 14. Secondary Fenton oxidation tank; 15. Secondary coagulation tank; 16. Secondary flocculation tank; 17. Secondary sedimentation tank; 18. Secondary neutralization tank;

[0028] 81. First-level anaerobic tank; 82. First-level anoxic tank; 83. First-level aerobic tank; 101. Second-level anoxic tank; 102. Second-level anaerobic tank; 103. Second-level aerobic tank. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] First of all, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Example:

[0034] like Figure 1As shown, the embodiment of the present application discloses a biopharmaceutical wastewater treatment device for treating wastewater, and its specific structure includes: a wastewater regulating tank 1, a primary pH regulating tank 2, a primary Fenton oxidation tank 3, a primary coagulation tank 4, a primary flocculation tank 5, a primary sedimentation tank 6, a primary neutralization tank 7, a primary AAO treatment system 8, a primary biochemical sedimentation tank 9, a secondary AAO treatment system 10 and a secondary biochemical sedimentation tank 11 connected in sequence;

[0035] And, the sludge thickening tank 12 is used to receive the precipitated sludge produced by the primary sedimentation tank 6, the primary biochemical sedimentation tank 9 and the secondary biochemical sedimentation tank 11, and discharge it after dehydration and concentration.

[0036] In the above technical solution, the wastewater treatment process is as follows:

[0037] S1: All types of wastewater generated in the workshop are uniformly collected and discharged into the wastewater regulating tank 1. After being homogenized and equalized in the wastewater regulating tank 1, the wastewater is input into the primary PH regulating tank 2.

[0038] S2: The wastewater is adjusted to pH 3-4 in the primary pH adjustment tank 2, and ferrous sulfate or ferrous chloride is added, and then the wastewater overflows into the primary Fenton oxidation tank 3.

[0039] S3: Add hydrogen peroxide to the primary Fenton oxidation tank 3, so that Fe 2+ Hydroxyl free radicals are generated with H2O2. The hydroxyl free radicals have strong oxidizing ability, which can break down the macromolecular organic matter in the wastewater into small molecular organic matter, thus improving the biodegradability of the wastewater. The oxidized wastewater enters the primary coagulation tank 4.

[0040] S4: Add sodium hydroxide to the primary coagulation tank 4 to adjust the pH of the wastewater to about 9-9.5, and then the wastewater overflows into the primary flocculation tank 5.

[0041] S5: Add polyacrylamide PAM to the primary flocculation tank 5 to aggregate the suspended particles in the wastewater to form larger "vanadium flower"-like clumps, and then discharge the wastewater into the primary sedimentation tank 6.

[0042] S6: The sewage is precipitated in the primary sedimentation tank 6, the precipitated sludge produced is discharged into the sludge thickening tank 12, and the supernatant is discharged into the primary neutralization tank 7 as treated water.

[0043] S7: Add sulfuric acid to the primary neutralization tank 7 to adjust the pH of the wastewater to 7-8, and then allow the neutral wastewater to flow into the primary AAO treatment system 8.

[0044] S8: The primary AAO treatment system 8 uses the AAO process to treat the sewage, and then discharges the treated sewage into the primary biochemical sedimentation tank 9.

[0045] S9: The sewage is separated into mud and water in the primary biochemical sedimentation tank 9, and part of the precipitated sludge is returned to the primary AAO treatment system 8, and the other part is discharged into the sludge concentration tank 12, while the supernatant is discharged into the secondary AAO treatment system 10 as treated water.

[0046] S10: The secondary AAO treatment system 10 uses the AAO process to treat the sewage, and then discharges the treated sewage into the secondary biochemical sedimentation tank 11.

[0047] S11: The sewage is separated into mud and water in the secondary biochemical sedimentation tank 11. Part of the precipitated sludge is returned to the secondary AAO treatment system 10, and the other part is discharged into the sludge concentration tank 12, while the supernatant meets the standards and is discharged to the outside.

[0048] The sludge thickening tank 12 dehydrates and concentrates the precipitated sludge produced by the primary sedimentation tank 6, the primary biochemical sedimentation tank 9 and the secondary biochemical sedimentation tank 11 to reduce the volume and water content, and then discharges the sludge for treatment.

[0049] The utility model adopts Fenton oxidation as pretreatment, only decomposing macromolecular organic matter into small molecular organic matter to improve the biodegradability of wastewater, and then undergoes two-stage AA0 process treatment to fully complete the purification of sewage. It has better treatment effects on COD, ammonia nitrogen, total nitrogen and total phosphorus, and has small sludge production and low reagent consumption, which significantly reduces the treatment cost.

[0050] In some embodiments, Figure 1 As shown, the primary AAO treatment system 8 comprises: a primary anaerobic tank 81, a primary anoxic tank 82 and a primary aerobic tank 83 connected in sequence;

[0051] Among them, part of the mixed liquid in the primary aerobic tank 83 flows back to the primary anoxic tank 82 , and part of the precipitated sludge in the primary biochemical sedimentation tank 9 flows back to the primary anaerobic tank 81 .

[0052] It should be noted that the AAO process is a combination of traditional activated sludge process, biological nitrification and denitrification process and biological phosphorus removal process. In the activated sludge of this system, the bacterial community is mainly composed of nitrifying bacteria, denitrifying bacteria and polyphosphate bacteria. Among them, nitrifying bacteria are chemoautotrophic bacteria, and their physiological activities do not require organic nutrients. They obtain carbon sources from carbon dioxide and energy from the oxidation of inorganic substances. Denitrifying bacteria are heterotrophic facultative anaerobic bacteria. They can only use the oxygen in nitric acid and nitrite ions to breathe and reduce nitrate in the absence of molecular oxygen.

[0053] In the primary anaerobic tank 81, the raw sewage and the phosphorus-containing sludge returned from the primary biochemical sedimentation tank 9 flow in simultaneously. The main function of this tank is to release phosphorus, which increases the concentration of P in the sewage. The soluble organic matter is absorbed by the microbial cells and the BOD concentration in the sewage decreases. In addition, part of NH3-N is removed due to the synthesis of the cells, which reduces the NH3-N concentration in the sewage, but the NO3-N content does not change.

[0054] In the primary anoxic tank 82, denitrifying bacteria use organic matter in sewage as a carbon source, reducing a large amount of NO3-N and NO2-N brought into the recirculating mixed liquor into N2 and releasing it into the air. As a result, the BOD5 concentration decreases, the NO3-N concentration decreases significantly, and the change in phosphorus is very small.

[0055] In the primary aerobic pool 83, organic matter is biochemically degraded by microorganisms and continues to decrease; organic nitrogen is ammonified and then nitrified, causing the NH3-N concentration to drop significantly, but as the nitrification process increases the NO3-N concentration, P also decreases at a faster rate due to the excessive uptake of polyphosphate bacteria; among them, the primary aerobic pool 83 returns a mixed liquid of 200% of the original sewage volume to the primary anoxic pool 82.

[0056] In summary, the AAO process can simultaneously complete the removal of organic matter, nitrification and denitrification, and the removal of excessive phosphorus intake. The premise of denitrification is that NH3-N should be completely nitrified. The aerobic tank can complete this function, the anoxic tank completes the denitrification function, and the anaerobic tank and aerobic tank jointly complete the phosphorus removal function.

[0057] Based on the above embodiment, the secondary AAO treatment system 10 comprises: a secondary anoxic tank 101, a secondary anaerobic tank 102 and a secondary aerobic tank 103 connected in sequence;

[0058] Part of the mixed liquid in the secondary aerobic tank 103 flows back to the secondary anoxic tank 101 , and part of the precipitated sludge in the secondary biochemical sedimentation tank 11 flows back to the secondary anaerobic tank 102 .

[0059] This embodiment prevents microorganisms in the primary aerobic tank 83 from directly entering the secondary anaerobic tank 102 by placing the secondary anoxic tank 101 in front, thereby avoiding the death of excessive microorganisms. The biological activity is increased through the transition of the anoxic tank, thereby improving the treatment effect.

[0060] In some embodiments, Figure 1 As shown, in order to ensure the sewage treatment effect, the secondary biochemical sedimentation tank 11 is also connected in sequence with a secondary PH adjustment tank 13, a secondary Fenton oxidation tank 14, a secondary coagulation tank 15, a secondary flocculation tank 16, a secondary sedimentation tank 17 and a secondary neutralization tank 18;

[0061] The precipitated sludge in the secondary sedimentation tank 17 is transported to the sludge thickening tank 12 .

[0062] In this embodiment, the treatment method of sewage in the secondary pH adjusting tank 13, the secondary Fenton oxidation tank 14, the secondary coagulation tank 15, the secondary flocculation tank 16, the secondary sedimentation tank 17 and the secondary neutralization tank 18 is the same as that in the primary pH adjusting tank 2, the primary Fenton oxidation tank 3, the primary coagulation tank 4, the primary flocculation tank 5, the primary sedimentation tank 6 and the primary neutralization tank 7, so it will not be repeated here; when the two-stage AA0 process is unstable or the incoming water concentration is high, safeguard measures can be activated to ensure that the sewage can meet the discharge standards.

[0063] In some embodiments, a lifting pump, a first liquid level meter, a first submersible mixer and an electromagnetic flow meter are provided in the wastewater regulating tank 1.

[0064] The lifting pump is used to lift the collected wastewater to the primary pH adjustment tank 2, which helps to maintain the flow in the tank, avoid wastewater retention and sludge deposition, and ensure the treatment effect.

[0065] The first liquid level meter is used to accurately measure the liquid level in the wastewater regulating tank 1, that is, the height of the wastewater; based on the real-time liquid level data of the liquid level meter, the operator can take timely measures, such as adjusting the operating speed or starting and stopping the lifting pump, to control the water level of the wastewater regulating tank and ensure that it operates within a safe range.

[0066] The first submersible mixer is used to stir sewage, and has functions including suspended matter stirring, oxygen transfer, uniform mixing, odor control and improving treatment efficiency, ensuring that the wastewater regulating tank 1 can operate effectively and provide high-quality wastewater for subsequent treatment units.

[0067] Electromagnetic flowmeters can provide real-time wastewater flow data by measuring the movement speed and volume of conductive liquids such as wastewater in a magnetic field. They are used to accurately measure wastewater flow, monitor flow conditions, control flow, record and analyze data, and optimize the operation of wastewater treatment systems for energy conservation.

[0068] Through the above design, it is ensured that the wastewater regulating tank 1 can operate stably and efficiently, the treatment effect on sewage is improved, and the operational safety of sewage treatment is improved.

[0069] In some embodiments, the primary neutralization tank 7 and the secondary neutralization tank 18 are both provided with a first sulfuric acid metering pump, an online pH meter and an air stirring device.

[0070] The first sulfuric acid metering pump is used to add acidic substances such as sulfuric acid to the neutralization tank to neutralize the alkaline substances in the wastewater so that the wastewater reaches an appropriate pH range. By accurately controlling the pH value of the wastewater, the treatment efficiency is improved, pipe blockage is prevented, the reaction rate is adjusted, and the stable pH value of the wastewater is maintained.

[0071] The online pH meter is used to continuously and in real time monitor the changes in the pH value of the wastewater in the neutralization tank; according to the monitored pH value of the wastewater, the dosage of the neutralizer can be adjusted, such as adjusting the flow rate of the sulfuric acid metering pump, to ensure that the pH value of the wastewater meets the treatment requirements, which helps to optimize the wastewater treatment process and ensure that the wastewater treatment system operates under optimal pH conditions, thereby improving treatment efficiency and quality.

[0072] A gas agitator is a device or system that uses gas (usually air) to stir liquid. It achieves the purpose of stirring by injecting gas into the liquid to form bubbles and using the liquid flow generated by the rise and bursting of the bubbles. It can provide oxygen to promote the growth and activity of microorganisms, thereby achieving biological treatment and degradation of wastewater.

[0073] Through the above design, the neutralization tank can stably and efficiently complete the adjustment of pH value, improve the treatment efficiency and quality, and ensure the stability of the sewage treatment process.

[0074] In some embodiments, a first central guide tube, a screw pump and a second liquid level meter are provided in the sludge thickening tank 12 .

[0075] The first central guide tube is used to guide the suspended solid particles (sludge) in the wastewater to settle to the bottom of the pool, thereby achieving solid-liquid separation; it can reduce the agitation and turbulence of the liquid in the pool, help maintain a relatively quiet environment at the bottom, and allow the suspended sludge to settle to the bottom of the pool more quickly, thereby improving the sludge concentration efficiency and preventing mixing and floating, thereby playing an important role in solid-liquid separation and sludge treatment.

[0076] The screw pump sucks in the concentrated sludge at the bottom of the tank and lifts it to the outlet through the rotation of the spiral blades, thereby realizing the lifting and conveying functions of the sludge, so that the sludge can be transported from the sludge thickening tank 12 to the location where it needs to be treated, which helps to improve the treatment efficiency of the entire sludge treatment system.

[0077] The second liquid level meter is used to accurately monitor the liquid level changes in the sludge thickening tank 12; according to the real-time data of the sludge level provided by the liquid level meter, the operator can adjust the sludge inlet and outlet in time, so as to control the sludge concentration and treatment effect.

[0078] Through the above design, the sludge thickening tank 12 can stably and efficiently complete the concentrated sedimentation of the sludge, thereby improving the treatment efficiency and treatment quality, thereby ensuring the effective concentration and treatment of the sludge.

[0079] In some embodiments, both the primary biochemical sedimentation tank 9 and the secondary biochemical sedimentation tank 11 are provided with a second central guide tube, a water outlet weir and a mud discharge pump.

[0080] The second central guide tube is used to guide the suspended solid particles (sludge) in the wastewater to settle to the bottom of the pool, thereby achieving solid-liquid separation; it can reduce the agitation and turbulence of the liquid in the pool, help maintain a relatively quiet environment at the bottom, and allow the suspended sludge to settle to the bottom of the pool more quickly, thereby improving the sludge concentration efficiency and preventing mixing and floating, thereby playing an important role in solid-liquid separation and sludge treatment.

[0081] The outlet weir is used to reduce the agitation and mixing of water during the drainage process, which helps to maintain a relatively clear upper layer of water in the sedimentation tank so that it is not disturbed by suspended matter at the bottom. By diverting drainage, preventing agitation and mixing, controlling water levels, separating solids and liquids, and reducing the emission of solid particles, it helps to maintain the normal operation of the sedimentation tank and ensure the water quality treatment effect.

[0082] The sludge pump is used to extract the sludge or sediment accumulated at the bottom of the sedimentation tank, so as to clean the sludge accumulated at the bottom of the sedimentation tank, keep the sedimentation tank clean and operate normally, and maintain the purification effect of the water body and the normal operation of the equipment.

[0083] Through the above design, the biochemical sedimentation tank can purify sewage stably and efficiently, improve the treatment efficiency and quality, help maintain the normal operation of the equipment, and extend the service life of the equipment.

[0084] In some embodiments, Figure 1 As shown, both the primary AAO treatment system 8 and the secondary AAO treatment system 10 are provided with a sludge return pump, a dissolved oxygen meter, an aeration device, a second submersible mixer, a nutrient metering pump and a rotor flowmeter.

[0085] The sludge return pump is used to return the sludge to the treatment system for further treatment or disposal. It can reduce the accumulation of sludge in the sedimentation tank and avoid clogging the equipment or affecting the normal operation of the equipment.

[0086] The dissolved oxygen meter is used to monitor the dissolved oxygen level in different treatment stages; in the aerobic stage (Ox ic stage), the dissolved oxygen meter can help monitor the concentration of oxygen in the water body to ensure that there is sufficient oxygen to support the growth of aerobic organisms and the oxidative degradation of organic matter; in the anoxic stage (Anox ic stage), the dissolved oxygen meter can help monitor the dissolved oxygen level in the water body to ensure that it is at a low level, thereby providing suitable conditions to promote the nitrification and denitrification processes; this helps to effectively remove nitrogen compounds and ensure that the treatment system can efficiently remove organic matter and pollutants such as nitrogen and phosphorus to achieve the expected treatment effect.

[0087] The aeration device is used to introduce oxygen into the water body in the aerobic section (Ox ic section), provide sufficient oxygen supply, promote the growth and activity of aerobic microorganisms, and enable these microorganisms to use oxygen to oxidize organic matter and degrade it into harmless substances, thereby completing the removal of organic matter; it also helps to promote the ammonification and nitrification of ammonia nitrogen, converting ammonia nitrogen into nitrate nitrogen, thereby achieving nitrogen removal.

[0088] The second submersible mixer is a device used to mix and stir water bodies. It is usually installed in the anoxic section and the anaerobic section. It plays important roles including sediment mixing, oxygen transfer, increasing microbial activity, preventing the formation of dead zones and maintaining reactor uniformity, ensuring efficient operation of the process and sewage treatment effect.

[0089] Nutrient metering pumps are used to add nutrients (such as nitrogen, phosphorus, etc.) to the treatment system to meet the growth needs of microorganisms and ensure the stable operation of the treatment system. The amount of nutrient salts added can be adjusted according to the real-time monitored water quality parameters (such as nitrogen and phosphorus concentrations) and the operating status of the treatment system; it helps to control the concentration of nutrients in the water body and maintain the ecological balance and health of the water body. The amount of nutrient salts added can also be accurately controlled according to the preset dosage and the needs of the treatment system to avoid waste and increased environmental load caused by excessive addition.

[0090] The rotor flowmeter is used to measure and monitor the water flow velocity to ensure that the water flow velocity is always within the optimal operating range during the treatment process, ensuring the treatment efficiency and effect. It plays a key role in measuring, monitoring, controlling and optimizing the water flow velocity, thereby ensuring that the treatment system can operate efficiently and achieve the expected water quality treatment effect.

[0091] Through the above design, the AAO process can be carried out efficiently and stably, ensuring that the treatment system can effectively remove organic matter and pollutants such as nitrogen and phosphorus to achieve the expected treatment effect.

[0092] In some embodiments, both the primary pH adjusting tank 2 and the secondary pH adjusting tank 13 are provided with ferrous metering pumps; the function of the ferrous metering pumps is to add ferrous (Fe2+) solution to the water body to adjust the pH value of the water body and provide necessary chemical conditions to promote the precipitation of phosphorus in sewage, improve treatment effects, prevent the redissolution of phosphorus and control water quality parameters.

[0093] In some embodiments, both the primary Fenton oxidation tank 3 and the secondary Fenton oxidation tank 14 are provided with a hydrogen peroxide metering pump; the function of the hydrogen peroxide metering pump is to quantitatively add hydrogen peroxide solution as an oxidant to help degrade the difficult-to-degrade organic matter in the wastewater, thereby improving the treatment efficiency and effect.

[0094] Both the primary coagulation tank 4 and the secondary coagulation tank 15 are provided with sodium hydroxide metering pumps; the function of the sodium hydroxide metering pumps is to add sodium hydroxide (NaOH) solution to the water body to adjust the pH value of the water body and promote the coagulation and sedimentation process. It has the functions of enhancing the coagulation effect, promoting sludge formation, stabilizing the treatment process and controlling water quality parameters.

[0095] PAM metering pumps are provided in both the primary flocculation tank 5 and the secondary flocculation tank 16; the function of the PAM (polyacrylamide) metering pump is to add polyacrylamide solution to the water body, which is used as a flocculant to promote the flocculation process, increase the flocculation speed, improve the flocculation effect, improve the sedimentation effect, and ensure the stability and reliability of the flocculation effect by optimizing the dosage.

[0096] A second sulfuric acid metering pump is provided in both the primary neutralization tank 7 and the secondary neutralization tank 18; the function of the sulfuric acid metering pump is to add sulfuric acid (H2SO4) solution to the water body to adjust the pH value of the water body and the acidity and alkalinity in the neutralization tank, promote the neutralization reaction, stabilize the treatment process, and ensure the stability and reliability of the treatment effect. It is one of the important regulating equipment in the wastewater treatment system.

[0097] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A biopharmaceutical wastewater treatment device, characterized in that: include: A wastewater regulating tank (1), a primary pH regulating tank (2), a primary Fenton oxidation tank (3), a primary coagulation tank (4), a primary flocculation tank (5), a primary sedimentation tank (6), a primary neutralization tank (7), a primary AAO treatment system (8), a primary biochemical sedimentation tank (9), a secondary AAO treatment system (10) and a secondary biochemical sedimentation tank (11) are connected in sequence; And, a sludge thickening tank (12) is used to receive the precipitated sludge produced by the primary sedimentation tank (6), the primary biochemical sedimentation tank (9) and the secondary biochemical sedimentation tank (11), and discharge it after dehydration and concentration.

2. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The primary AAO treatment system (8) comprises: a primary anaerobic tank (81), a primary anoxic tank (82) and a primary aerobic tank (83) connected in sequence; Part of the mixed liquid in the primary aerobic tank (83) flows back to the primary anoxic tank (82), and part of the precipitated sludge in the primary biochemical sedimentation tank (9) flows back to the primary anaerobic tank (81).

3. The biopharmaceutical wastewater treatment device according to claim 2, characterized in that: The secondary AAO treatment system (10) comprises: a secondary anoxic tank (101), a secondary anaerobic tank (102) and a secondary aerobic tank (103) connected in sequence; Part of the mixed liquid in the secondary aerobic tank (103) is returned to the secondary anoxic tank (101), and part of the precipitated sludge in the secondary biochemical sedimentation tank (11) is returned to the secondary anaerobic tank (102).

4. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The secondary biochemical sedimentation tank (11) is also connected in sequence to a secondary pH regulating tank (13), a secondary Fenton oxidation tank (14), a secondary coagulation tank (15), a secondary flocculation tank (16), a secondary sedimentation tank (17) and a secondary neutralization tank (18); The precipitated sludge in the secondary sedimentation tank (17) is transported to the sludge thickening tank (12).

5. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The wastewater regulating tank (1) is provided with a lifting pump, a first liquid level meter, a first submersible mixer and an electromagnetic flow meter.

6. The biopharmaceutical wastewater treatment device according to claim 4, characterized in that: The primary neutralization tank (7) and the secondary neutralization tank (18) are both provided with a first sulfuric acid metering pump, an online pH meter and an air stirring device.

7. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The sludge thickening tank (12) is provided with a first central guide tube, a screw pump and a second liquid level meter.

8. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The first-level biochemical sedimentation tank (9) and the second-level biochemical sedimentation tank (11) are both provided with a second central guide tube, a water outlet weir and a mud discharge pump.

9. The biopharmaceutical wastewater treatment device according to claim 1, characterized in that: The primary AAO treatment system (8) and the secondary AAO treatment system (10) are both provided with a sludge return pump, a dissolved oxygen meter, an aeration device, a second submersible mixer, a nutrient salt metering pump and a rotor flow meter.

10. The biopharmaceutical wastewater treatment device according to claim 4, characterized in that: The first-level pH regulating tank (2) and the second-level pH regulating tank (13) are both provided with ferrous metering pumps; the first-level Fenton oxidation tank (3) and the second-level Fenton oxidation tank (14) are both provided with hydrogen peroxide metering pumps; the first-level coagulation tank (4) and the second-level coagulation tank (15) are both provided with sodium hydroxide metering pumps; the first-level flocculation tank (5) and the second-level flocculation tank (16) are both provided with PAM metering pumps; the first-level neutralization tank (7) and the second-level neutralization tank (18) are both provided with a second sulfuric acid metering pump.

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