Green low-carbon treatment system for wastewater of traditional Chinese medicine extraction pharmaceutical enterprises

Abstract

The utility model provides a traditional Chinese medicine extraction pharmaceutical enterprise wastewater green low-carbon treatment system, which relates to the technical field of medical industry wastewater green low-carbon treatment, and comprises an adjusting tank, a first clean water tank, a transfer tank, a filtering and sedimentation treatment unit, a hydrolytic acidification, oxidation and sedimentation unit, a second contact oxidation tank and a periodic cycle activated sludge process reaction tank, a clear water storage detection unit; by adopting the technical scheme of the main process of'source control, hydrolytic acidification and aerobic technology ', an anaerobic fermentation process and biogas generated by the anaerobic fermentation process are avoided, the carbon emission of wastewater treatment is reduced, the odor of a sewage station is removed, and the health of enterprise workers and the safety of the surrounding environment of a factory are ensured; and an enterprise is helped to achieve the purposes of'carbon reaching peak and carbon neutralization 'of wastewater treatment and construction of a green and healthy factory.

Description

Technical Field

[0001] This utility model relates to the field of green and low-carbon treatment technology for pharmaceutical industrial wastewater, and in particular to a green and low-carbon treatment system for wastewater from pharmaceutical companies that extract traditional Chinese medicine. Background Technology

[0002] The descriptions in this section provide background information relating to this disclosure and do not constitute prior art.

[0003] Currently, the main process for wastewater treatment in pharmaceutical companies that extract traditional Chinese medicine, which uses "anaerobic fermentation + aerobic technology," has the following drawbacks:

[0004] Anaerobic fermentation processes such as wastewater treatment plants often operate inefficiently, resulting in insufficient biogas production and the inability to recover and utilize biogas.

[0005] The biogas produced by anaerobic fermentation is emitted after being burned by a flare, or after being adsorbed by activated carbon, or directly emitted into the air. The biogas produced by anaerobic fermentation contains hydrogen sulfide gas, which has an irritating odor and is detrimental to the health of the staff of the wastewater treatment plant. It will also affect the living environment of the residents around the wastewater treatment plant. At the same time, biogas is a flammable and explosive gas, which has a significant impact on the safety environment of the plant area.

[0006] To maintain the normal operation of the anaerobic fermentation process, a temperature of 35 degrees Celsius is required. In winter, companies need to add a large amount of steam to maintain the temperature required for anaerobic fermentation.

[0007] The above content increases the direct and indirect carbon emissions from wastewater treatment at sewage treatment plants. Utility Model Content

[0008] The purpose of this invention is to provide a green and low-carbon wastewater treatment system for pharmaceutical companies that extract traditional Chinese medicine. This system combines source control, hydrolysis acidification, and aerobic technology, eliminating the need for anaerobic fermentation. It solves the following technical problems: the biogas produced during the process has an irritating odor; it is detrimental to the health of the company's wastewater treatment plant staff and affects the living environment of surrounding residents; it is flammable and explosive, significantly impacting the safety of the plant area; and in winter, the company needs to add large amounts of steam to maintain the temperature required for anaerobic fermentation, increasing both direct and indirect carbon emissions from wastewater treatment.

[0009] This utility model provides a green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, comprising:

[0010] The system consists of an equalization tank, a first clear water tank, and a transfer tank.

[0011] The wastewater from the pharmaceutical companies that extract traditional Chinese medicine undergoes energy-saving and emission-reduction treatment at the production source.

[0012] The clean wastewater discharged from the extraction workshop of the pharmaceutical company that extracts traditional Chinese medicine is discharged into the first clear water tank through pipelines, and is discharged after testing and meeting the standards.

[0013] The wastewater discharged by the pharmaceutical companies that extract traditional Chinese medicine is collected, mixed properly, and then discharged into the filtration and sedimentation treatment unit through pipelines. The filtration and sedimentation treatment unit is fixedly connected to the equalization tank through pipelines.

[0014] The COD concentration of the low-concentration wastewater discharged from the extraction workshop and other individual units in the pharmaceutical company's plant area is below 2000 mg / L;

[0015] The high-concentration wastewater with a COD concentration of over 3500 mg / L discharged from the extraction workshop of the pharmaceutical company that extracts traditional Chinese medicine is discharged into the transfer tank through pipelines.

[0016] High-concentration wastewater with COD concentrations between 3500 mg / L and 2000 mg / L discharged from the extraction workshops of the pharmaceutical companies that extract traditional Chinese medicine is discharged into the equalization tank through pipelines.

[0017] The transfer tank and the first clear water tank are fixedly connected to the equalization tank through pipelines, and the high-concentration wastewater in the transfer tank and the clean wastewater in the first clear water tank are mixed in the equalization tank to reduce the COD concentration of the wastewater to below 3500 mg / L.

[0018] The wastewater mixed in the equalization tank is discharged into the hydrolysis acidification, oxidation, and precipitation unit through a pipeline, and the wastewater is discharged after being treated by the hydrolysis acidification, oxidation, and precipitation unit and meets the standards.

[0019] The second contact oxidation tank, where the wastewater treated by the oxidation and sedimentation units fails to meet standards and the influent volume is less than 500 ml / min. When the COD concentration is less than 2000 mg / L, it is discharged into the second contact oxidation tank through the pipeline and discharged after treatment to meet the standard.

[0020] In a cyclic activated sludge reactor, the influent volume of wastewater failing to meet standards after treatment by the oxidation and sedimentation units is greater than or equal to 500. When the COD concentration is greater than or equal to 2000 mg / L and less than 3500 mg / L, it is discharged into the periodic circulating activated sludge reaction tank through the pipeline;

[0021] The periodic circulating activated sludge reaction tank is fixedly connected to a clear water collection and detection unit.

[0022] As a further optimization, in order to temporarily store wastewater in the event of an accident in the workshop, the electric valve of the inlet of the accident pool is opened by an external controller in the event of an accident. The extraction workshop of the Chinese medicine extraction pharmaceutical company and other individual units in the factory area are all connected to the accident pool, and the inlet pipe of the accident pool is equipped with an electric valve.

[0023] The accident pool is fixedly connected to the transfer pool via pipeline;

[0024] When the accident is resolved, the wastewater discharged from the accident pool enters the transfer pool.

[0025] As a further optimization, in order to filter and settle low-concentration wastewater and purify the water quality, the filtration and sedimentation unit includes:

[0026] Bar screen, mechanical fine bar screen, grit chamber and lifting tank;

[0027] The wastewater discharged by the pharmaceutical companies that extract traditional Chinese medicine is collected and mixed in a reasonable manner, and then connected in a fixed manner to a bar screen, a mechanical fine bar screen, a grit chamber and a lifting tank through pipelines.

[0028] The booster tank is fixedly connected to the regulating tank via pipeline.

[0029] As a further optimization, in order to purify the water quality by hydrolyzing, acidifying, oxidizing, and settling the mixed wastewater in the equalization tank, the hydrolyzing, acidifying, oxidizing, and settling unit includes:

[0030] Hydrolysis acidification tank, first contact oxidation tank, sedimentation tank and buffer tank;

[0031] The output end of the equalization tank is fixedly connected to the hydrolysis acidification tank, the first contact oxidation tank, the sedimentation tank and the buffer tank in sequence through pipelines;

[0032] Wastewater from the buffer tank is discharged after passing the testing and inspection.

[0033] The output end of the buffer tank is fixedly connected to the periodic circulating activated sludge reaction tank and the second contact oxidation tank through pipelines.

[0034] As a further optimization, in order to use the secondary sedimentation tank to separate sludge from the wastewater treated by the second contact oxidation tank and improve the water quality compliance rate, the output end of the second contact oxidation tank is fixedly connected to the secondary sedimentation tank, and the treated wastewater is discharged after meeting the standards.

[0035] As a further optimization, to facilitate the testing of the treated water quality, the clean water collection and testing unit includes:

[0036] Second clear water tank and Parshall metering tank;

[0037] The output end of the periodic circulating activated sludge reactor is connected in sequence to the second clear water tank and the Parshall metering tank via pipelines.

[0038] As a further optimization, in order to concentrate and compress the sludge and then transport it away for harmless disposal, the equalization tank, hydrolysis acidification tank, first contact oxidation tank, periodic circulating activated sludge reaction tank, second contact oxidation tank and secondary sedimentation tank are respectively fixedly connected to a sludge tank through pipelines and sludge pumps.

[0039] The lower end of the inner cavity of the sludge tank is fixedly connected to a sludge thickening tank, and the lower end of its outer wall is fixedly connected to a sludge lifting pump.

[0040] The output end of the sludge lifting pump is fixedly connected to a filter press.

[0041] As a further optimization, in order to utilize clean wastewater supplied to the equalization tank for diluting high-concentration wastewater, the clean wastewater discharged from the extraction workshop of the traditional Chinese medicine extraction pharmaceutical company is discharged into the equalization tank through pipelines.

[0042] As a further optimization, in order to aerate the equalization tank, the first contact oxidation tank, the periodic circulating activated sludge reactor, and the second contact oxidation tank to achieve mixing and oxygenation, an aeration fan is fixedly connected to the lower end of the outer wall of each of the equalization tank, the first contact oxidation tank, the periodic circulating activated sludge reactor, and the second contact oxidation tank.

[0043] As a further optimization, in order to guide the odor from the sewage tank to the exhaust gas purification equipment for adsorption and filtration, and to dilute and neutralize the odor through water spraying during this process, the equalization tank, hydrolysis acidification tank, first contact oxidation tank, periodic circulating activated sludge reaction tank, second contact oxidation tank and secondary sedimentation tank are respectively connected to centrifugal fans through pipelines.

[0044] The centrifugal fan output end is fixedly connected to a waste gas purification device, which has a spray structure inside.

[0045] The output of the circulating water pump is fixedly connected to the input end of the spray structure.

[0046] This utility model provides an improved green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine. Compared with the prior art, it has the following improvements and advantages:

[0047] Wastewater from pharmaceutical companies extracting traditional Chinese medicine undergoes source-based energy conservation and emission reduction treatment. The treated clean wastewater is discharged into the first clear water tank via pipeline, and discharged only after passing quality tests. Wastewater from the extraction workshop and other individual plants is collected separately, mixed appropriately, and then discharged through pipelines into filtration and sedimentation units for purification treatment before being discharged into the equalization tank. High-concentration wastewater with a COD concentration above 3500 mg / L from the extraction workshop is discharged into a transfer tank via pipeline. High-concentration wastewater with a COD concentration between 2000 mg / L and 3500 mg / L is discharged into the equalization tank via pipeline. The high-concentration wastewater in the transfer tank and the clean wastewater from the first clear water tank are mixed in the equalization tank to reduce the COD concentration to below 3500 mg / L. The mixed wastewater is then treated through hydrolysis acidification, oxidation, and sedimentation units to meet emission standards before discharge. The influent volume of non-compliant wastewater is less than 500 ml. When the COD concentration is less than 2000 mg / L, the wastewater is discharged into the second contact oxidation tank through pipeline for treatment to meet the standards before being discharged; if the influent volume of non-compliant wastewater is greater than or equal to 500 mg / L... When the COD concentration is greater than or equal to 2000 mg / L but less than 3500 mg / L, it is discharged into the periodic circulating activated sludge reactor through pipeline for treatment. After treatment, the treated water is collected and tested by the monitoring unit and discharged. The technical solution adopts the main process of "source control + hydrolysis acidification + aerobic technology", which avoids the anaerobic fermentation process and the biogas produced, reduces the carbon emissions of wastewater treatment, removes the odor of the sewage treatment plant, ensures the health of the company's employees and the safety of the surrounding environment, and helps the company achieve the goal of "carbon peak and carbon neutrality" in wastewater treatment and build a green and healthy factory. Attached Figure Description

[0048] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0049] Figure 1 This is a flowchart of the present invention;

[0050] Figure 2 This is a schematic diagram of the structure of this utility model.

[0051] 1-Equalization tank, 2-First clear water tank, 3-Transfer tank, 4-Emergency tank, 5-Hydrolysis acidification tank, 6-First contact oxidation tank, 7-Sedimentation tank, 8-Buffer tank, 9-Circulating activated sludge reaction tank, 10-Second contact oxidation tank, 11-Sludge tank, 12-Second sedimentation tank, 13-Grit chamber, 14-Mechanical fine screen, 15-Grit chamber, 16-Lifting tank, 17-Valve well, 18-Second clear water tank, 19-Pasteurized flume, 20-Sludge thickening tank, 21-Sludge lifting pump, 22-Filter press, 23-Aeration blower, 24-Centrifugal blower, 25-Circulating water pump. Detailed Implementation

[0052] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] Please see Figure 1-2This utility model provides a technical solution: a green and low-carbon treatment system for wastewater from pharmaceutical companies that extract traditional Chinese medicine, comprising:

[0056] Equalization tank 1, first clear water tank 2, and transfer tank 3;

[0057] Wastewater from pharmaceutical companies that extract traditional Chinese medicine undergoes energy-saving and emission-reduction treatment at the production source.

[0058] Clean wastewater discharged from the extraction workshop of pharmaceutical companies that extract traditional Chinese medicine is discharged into the first clear water tank 2 through pipelines, and is discharged after testing and meeting the standards;

[0059] The wastewater discharged by pharmaceutical companies that extract traditional Chinese medicine is classified, collected and mixed properly, and then discharged into the filtration and sedimentation treatment unit through pipelines. The filtration and sedimentation treatment unit is fixedly connected to the equalization tank 1 through pipelines.

[0060] The COD concentration of low-concentration wastewater discharged from the extraction workshop and other individual units in the plant area is below 2000 mg / L;

[0061] High-concentration wastewater with a COD concentration of over 3500 mg / L discharged from the extraction workshop of pharmaceutical companies that extract traditional Chinese medicine is discharged into transfer tank 3 through pipelines;

[0062] High-concentration wastewater with COD concentrations between 3500 mg / L and 2000 mg / L discharged from the extraction workshops of pharmaceutical companies that extract traditional Chinese medicine is discharged into equalization tank 1 through pipelines;

[0063] The transfer tank 3 and the first clear water tank 2 are fixedly connected to the equalization tank 1 through pipelines, and the high-concentration wastewater in the transfer tank 3 and the clean wastewater in the first clear water tank 2 are mixed in the equalization tank 1 to reduce the COD concentration of the wastewater to below 3500mg / L.

[0064] The wastewater mixed in the equalization tank 1 is discharged into the hydrolysis acidification, oxidation, and sedimentation unit through pipelines. After treatment by the hydrolysis acidification, oxidation, and sedimentation unit, the wastewater is discharged after testing and meeting the standards.

[0065] The wastewater from the second contact oxidation tank 10, after treatment by the oxidation and sedimentation units, did not meet the standards, and the influent volume was less than 500 cubic meters per second. When the COD concentration is less than 2000 mg / L, it is discharged into the second contact oxidation tank 10 through the pipeline and discharged after treatment to meet the standard.

[0066] The wastewater from the cyclic activated sludge reactor 9, after oxidation and sedimentation unit treatment, failed to meet standards. The influent volume was greater than or equal to 500. When the COD concentration is greater than or equal to 2000 mg / L and less than 3500 mg / L, it is discharged into the cycle-circulating activated sludge reaction tank 9 through the pipeline;

[0067] The cyclic activated sludge process reactor 9 is fixedly connected to a clear water collection and detection unit.

[0068] Specifically, in this embodiment, the equalization tank 1 is existing technology and plays a crucial role in the wastewater treatment system. Its main functions include regulating water volume, balancing water quality, and pre-treating wastewater, thereby providing a stable environment for subsequent treatment processes. The clear water tank is existing technology and is used to store clear water. The transfer tank 3 is existing technology and is used to temporarily store wastewater. The cycle-cycle activated sludge reactor 9 is existing technology, which combines the characteristics of the sequencing batch activated sludge process and has been optimized and improved. The CASS reactor is usually divided into a pre-reaction zone and a main reaction zone. The pre-reaction zone is a biological selection zone. This partitioning helps to improve treatment efficiency and stability. A liftable decanting device is installed at the rear of the main reaction zone, enabling the CASS process to achieve continuous influent and intermittent cyclic operation, integrating aeration, sedimentation, and drainage. It is a "filling and draining" activated sludge process, where wastewater is treated according to a certain cycle and stage. Each cycle... The ring consists of four stages: water filling and aeration, sedimentation, skimming, and idle. It is equipped with a skimming system and a liquid level sensing system. Aeration hoses with appropriate aeration intervals are installed at the bottom of the tank. During aeration, the hoses deform due to air pressure, opening the micropores and allowing aeration to proceed. After aeration stops, the hoses contract elastically, closing the micropores and preventing sludge from entering the air pipes. The contact oxidation tank is existing technology. A contact oxidation tank is a biological treatment device commonly used for wastewater treatment and water purification. It utilizes microorganisms to contact organic matter in wastewater. Through aeration and stirring, the microorganisms and organic matter in the wastewater are fully mixed and contacted, converting the organic matter into harmless substances such as carbon dioxide and water, thereby degrading the organic matter. In this process, microorganisms consume oxygen and organic matter, generating energy to promote their growth and reproduction. Over time, the organic matter in the wastewater is gradually degraded, and the water quality is purified.

[0069] The specific steps for energy-saving and emission-reduction treatment of wastewater from pharmaceutical companies that extract traditional Chinese medicine are as follows:

[0070] The concentration of the alcohol extract and the alcohol precipitation supernatant adopts a two-stage concentration process, namely an MVR energy-saving concentrator and a double-effect concentrator, which has high concentration efficiency, low loss, and zero discharge in the first stage of concentration; the cooling water system is designed with two systems: a high-temperature circulating cooling water system for the water extraction and alcohol extraction process and a water ring vacuum system to improve concentration efficiency and effectively control the loss in the ethanol recovery process; the ethanol recovery process is automatically controlled by the vacuum decompression system to ensure low-temperature ethanol recovery and reduce loss; the technologies used in the above energy-saving and emission-reduction treatment are all existing technologies and will not be described in detail here;

[0071] Furthermore, energy-saving and emission-reduction treatment is implemented at the production source for wastewater from pharmaceutical companies extracting traditional Chinese medicine. This reduces the discharge of high-concentration ethanol wastewater and lowers the pollutant concentration in the high-concentration wastewater from the extraction workshop. The treated clean wastewater is discharged into the first clear water tank 2 via pipeline, and discharged after passing testing. Wastewater from the extraction workshop and other individual plants is collected separately, mixed appropriately, and then discharged into the filtration and sedimentation treatment unit for purification before being discharged into the equalization tank 1. High-concentration wastewater with a COD concentration above 3500 mg / L from the extraction workshop is discharged into the transfer tank 3 via pipeline. High-concentration wastewater with a COD concentration between 2000 mg / L and 3500 mg / L is discharged into the equalization tank 1 via pipeline. The high-concentration wastewater in the transfer tank 3 and the clean wastewater in the first clear water tank 2 are mixed in the equalization tank 1 to reduce the COD concentration to below 3500 mg / L. The mixed wastewater is then treated through hydrolysis acidification, oxidation, and sedimentation units to meet standards before being discharged. The influent volume of non-compliant wastewater is less than 500 ml. When the COD concentration is less than 2000 mg / L, the wastewater is discharged through pipeline into the second contact oxidation tank 10 for treatment until it meets the standard before being discharged; if the influent volume of non-compliant wastewater is greater than or equal to 500 mg / L... When the COD concentration is greater than or equal to 2000 mg / L and less than 3500 mg / L, it is discharged into the periodic circulating activated sludge reaction tank 9 through the pipeline for treatment. It is necessary to ensure that the volume of the equalization tank 1 and the transfer tank 3 is not less than 2 days' worth of sewage inflow to the sewage treatment plant. After the treated clean water is collected and tested by the detection unit, it is discharged.

[0072] More specifically, the clean wastewater from the extraction workshop is the condensate discharged from the extraction production stations, which can generally be discharged directly after cooling. The ethanol wastewater, containing high concentrations of pollutants, produced from the water extraction and alcohol precipitation, ethanol recovery, alcohol extraction, and slag discharge stations in the extraction workshop is discharged unevenly, sometimes with large volumes and low concentrations, and sometimes with high concentrations and small volumes. This causes the overall influent COD concentration of the plant's wastewater treatment plant to sometimes reach above 5000 mg / L, and sometimes below 5000 mg / L, but most of the time it hovers around 3000 mg / L.

[0073] Understandably, the dead corners of the aforementioned ponds need to be rounded to prevent localized anaerobic fermentation from producing biogas.

[0074] In some embodiments, the extraction workshop of a pharmaceutical company that extracts traditional Chinese medicine and other individual units in the factory area are all connected to an emergency pool 4, and an electric valve is installed on the water inlet pipe of the emergency pool 4.

[0075] The accident pool 4 is fixedly connected to the transfer pool 3 via a pipeline;

[0076] When the accident is resolved, the wastewater discharged from accident pool 4 enters transfer pool 3.

[0077] Specifically in this embodiment, when an accident occurs in the workshop, the sewage is discharged into the accident pool 4 for temporary storage, and the electric valve of the inlet of the accident pool 4 is opened by an external controller during the accident.

[0078] Furthermore, when the accident is resolved, the wastewater discharged from the accident pool 4 enters the transfer pool 3, and then is discharged into the equalization pool 1.

[0079] In some embodiments, the filtration and sedimentation treatment unit includes:

[0080] 13. Bar screen 14. Mechanical fine bar screen 15. Grit chamber 16.

[0081] Wastewater discharged by pharmaceutical companies that extract traditional Chinese medicine is collected separately, mixed properly, and then connected in sequence through pipelines to a bar screen 13, a mechanical fine bar screen 14, a grit chamber 15, and a lift tank 16.

[0082] The booster tank 16 is fixedly connected to the equalization tank 1 via a pipeline.

[0083] Specifically, in this embodiment, the bar screen 13 is existing technology and is an important structure in the sewage treatment process. Its main function is to intercept larger suspended or floating solids in the sewage, such as medicinal plant fibers, rags, and plastic products, to prevent these impurities from clogging subsequent treatment equipment, pipes, and valves, ensuring the normal operation of the sewage treatment system and reducing the treatment load of subsequent treatment units. The mechanical fine bar screen 14 is existing technology with a screen spacing of 20mm. It is a device commonly used in sewage treatment and other fields to separate solid suspended solids in fluids and ensure smooth water flow. The grit chamber 15 is existing technology and is mainly used to remove sand particles with a particle size greater than 0.2mm and a density greater than 2.65t / m³ from the sewage to protect pipes, valves, and other facilities from wear and blockage. The lift tank 16 is existing technology and its main function is to achieve preliminary sewage treatment by regulating the water volume and quality, and to provide a buffer in case of accidents, ensuring the continuity and stability of the sewage treatment process. All the equipment used above is existing technology and will not be described in detail here.

[0084] Furthermore, the wastewater discharged from other individual units in the plant area may contain impurities. Large particles of impurities are filtered out by the bar screen 13 and the mechanical fine screen 14, and sand particles are removed by the grit chamber 15.

[0085] A valve is installed on the pipeline connecting the lifting tank 16 and the regulating tank 1. This valve is installed in the valve well 17 and controls whether the lifting tank 16 and the regulating tank 1 are connected.

[0086] In some embodiments, the hydrolysis acidification, oxidation, and precipitation unit includes:

[0087] Hydrolysis acidification tank 5, first contact oxidation tank 6, sedimentation tank 7 and buffer tank 8;

[0088] The output end of the equalization tank 1 is connected in sequence to the hydrolysis acidification tank 5, the first contact oxidation tank 6, the sedimentation tank 7 and the buffer tank 8 via pipelines;

[0089] Wastewater from buffer tank 8 was discharged only after passing quality tests.

[0090] The output end of buffer tank 8 is fixedly connected to the periodic circulating activated sludge reaction tank 9 and the second contact oxidation tank 10 through pipelines.

[0091] Specifically, in this embodiment, the hydrolysis acidification tank 5 is a prior art application, a common sewage treatment device. Its working principle is to decompose organic wastewater into simpler substances under low-temperature conditions through the action of anaerobic bacteria and hydrogen, thus degrading and transforming the organic matter without producing biogas. The contact oxidation tank is a prior art application, a biological treatment device commonly used for sewage treatment and water purification. It utilizes microorganisms to contact the organic matter in the sewage. Through aeration and stirring, the microorganisms and organic matter in the sewage are fully mixed and contacted, converting the organic matter into harmless substances such as carbon dioxide and water, thereby degrading the organic matter. In this process, the microorganisms consume oxygen and organic matter, generating energy to promote their own growth and reproduction. Over time, the organic matter in the sewage is gradually degraded, and the water quality is purified. The buffer tank 8 is a prior art application in the field of existing sewage treatment. When the treated wastewater flows through the buffer tank, some of the silt, suspended solids, etc. in the water will naturally settle down, making the wastewater after passing through the buffer tank easier to treat because it reduces the amount of impurities that need to be removed in subsequent treatment processes.

[0092] Furthermore, the wastewater mixed in the equalization tank 1 enters the hydrolysis acidification tank 5, where solid matter is degraded into soluble matter, macromolecules are degraded into small molecules, and carbohydrates are degraded into fatty acids during the acidification stage. Therefore, hydrolysis acidification can increase the BOD to COD ratio and accelerate the organic matter degradation process. After treatment in the hydrolysis acidification tank 5, the wastewater enters the first contact oxidation tank 6, where it further interacts with aerobic microorganisms attached to the biological packing material to remove the remaining organic matter. Some suspended solids carried by the water flow are precipitated in the sedimentation tank 7. The sedimentation tank 7 can remove suspended solids and ensure the quality of the effluent. The wastewater from the sedimentation tank 7 enters the buffer tank 8, where the water quality is tested. If it meets the standards, it is discharged. If it does not meet the standards, the wastewater is judged based on the influent flow rate and COD concentration of the wastewater treatment plant and enters the periodic circulating activated sludge reactor 9 or the second contact oxidation tank 10. The influent flow rate of the wastewater treatment plant is less than 500. When the COD concentration is less than 2000 mg / L, the wastewater enters the second contact oxidation tank 10; the influent flow rate of the wastewater treatment plant is greater than or equal to 500 mg / L. When the COD concentration is greater than or equal to 2000 mg / L and less than 3500 mg / L, the wastewater enters the cyclic activated sludge reactor 9. The judgment is based primarily on the influent flow rate of the wastewater treatment plant. When the influent flow rate of the wastewater treatment plant is greater than or equal to 500 mg / L... Even if the COD concentration does not reach 2000 mg / L, it is still supplied to the cyclic activated sludge reactor 9.

[0093] In some embodiments, the output end of the second contact oxidation tank 10 is fixedly connected to a secondary sedimentation tank 12. After treatment to meet the standards, the wastewater is discharged. The secondary sedimentation tank 12 is used to separate sludge from the wastewater treated by the second contact oxidation tank 10, thereby improving the water quality compliance rate.

[0094] In some embodiments, the clean water collection and detection unit includes:

[0095] Second clear water tank 18 and Parshall metering tank 19;

[0096] The output end of the cyclic activated sludge reactor 9 is connected to the second clear water tank 18 and the Parshall metering tank 19 in sequence via pipelines.

[0097] Specifically, in this embodiment, the Parshall meter 19 is existing technology. The Parshall meter is used in conjunction with an open channel flow meter to convert the flow rate in the open channel into the level of the liquid for flow measurement. The Parshall meter 19 also facilitates the detection of whether the water quality meets the standards, and the water is discharged after meeting the standards.

[0098] In some embodiments, the equalization tank 1, the hydrolysis acidification tank 5, the first contact oxidation tank 6, the periodic circulating activated sludge reaction tank 9, the second contact oxidation tank 10, and the secondary sedimentation tank 12 are respectively fixedly connected to the sludge tank 11 through pipelines and sludge pumps.

[0099] The lower end of the inner cavity of the sludge tank 11 is fixedly connected to the sludge thickening tank 20, and the lower end of its outer wall is fixedly connected to the sludge lifting pump 21.

[0100] The output end of the sludge lifting pump 21 is fixedly connected to the filter press 22.

[0101] Specifically in this embodiment, the remaining sludge in the above-mentioned device is pumped into the sludge tank 11 by the sludge pump. After the flocculant is added to the supernatant of the sludge tank 11, it is concentrated by the sludge thickening tank 20. After being discharged into the filter press 22 by the sludge lifting pump 21 for compression treatment, it is transported away for harmless treatment. The filtrate generated at the filter press 22 is returned to the equalization tank 1 for circulation treatment.

[0102] In some embodiments, clean wastewater discharged from the extraction workshop of a pharmaceutical company that extracts traditional Chinese medicine is discharged into a regulating tank 1 through a pipeline to dilute other high-concentration wastewater.

[0103] In some embodiments, the lower ends of the outer walls of the equalization tank 1, the first contact oxidation tank 6, the periodic circulating activated sludge reaction tank 9, and the second contact oxidation tank 10 are all fixedly connected to an aeration blower 23.

[0104] Specifically, in this embodiment, the periodic circulating activated sludge process reactor 9 and the second contact oxidation tank 10 are both located indoors;

[0105] Furthermore, the aeration blower 23 aerates the equalization tank, the first contact oxidation tank, the periodic circulating activated sludge reaction tank, and the second contact oxidation tank, thereby playing a role in mixing and oxygenation.

[0106] In some embodiments, the equalization tank 1, the hydrolysis acidification tank 5, the first contact oxidation tank 6, the periodic circulating activated sludge reaction tank 9, the second contact oxidation tank 10, and the secondary sedimentation tank 12 are respectively fixedly connected to a centrifugal fan 24 through pipelines.

[0107] The output end of the centrifugal fan 24 is fixedly connected to the exhaust gas purification equipment 26, which has a spray structure inside;

[0108] The output of the circulating water pump 25 is fixedly connected to the input end of the spray structure.

[0109] Specifically, in this implementation, the exhaust gas purification equipment 26 adopts a common exhaust gas purification structure, with multiple layers of activated carbon filters inside for deodorization. It draws in odors from the sewage tank and guides them to the exhaust gas purification equipment for adsorption and filtration. During this process, the odors are diluted and neutralized by water spraying.

[0110] Furthermore, the circulating water pump 25 is connected to an external water source, and the spray structure adopts a conventional design of pipes plus multiple nozzles.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, characterized in that, include: The regulating tank (1), the first clear water tank (2), and the transfer tank (3); The wastewater from the pharmaceutical companies that extract traditional Chinese medicine undergoes energy-saving and emission-reduction treatment at the production source. The clean wastewater discharged from the extraction workshop of the pharmaceutical company that extracts Chinese medicine is discharged into the first clear water pool (2) through pipeline, and is discharged after passing the test; The wastewater discharged by the pharmaceutical companies that extract traditional Chinese medicine is classified, collected and mixed reasonably, and then discharged into the filtration and sedimentation treatment unit through pipelines. The filtration and sedimentation treatment unit is fixedly connected to the regulating tank (1) through pipelines. The COD concentration of the low-concentration wastewater discharged from the extraction workshop and other individual units in the pharmaceutical company's plant area is below 2000 mg / L; The high-concentration wastewater with a COD concentration of over 3500 mg / L discharged from the extraction workshop of the Chinese medicine extraction pharmaceutical enterprise is discharged into the transfer tank (3) through pipeline. The high-concentration wastewater with COD concentrations of less than 3500 mg / L and more than 2000 mg / L discharged from the extraction workshop of the Chinese medicine extraction pharmaceutical enterprise is discharged into the equalization tank (1) through pipeline. The transfer tank (3) and the first clear water tank (2) are fixedly connected to the regulating tank (1) through pipelines, and the high-concentration wastewater in the transfer tank (3) and the clean wastewater in the first clear water tank (2) are mixed in the regulating tank (1) to reduce the COD concentration of the wastewater to below 3500 mg / L. The wastewater mixed in the regulating tank (1) is discharged into the hydrolysis acidification, oxidation and precipitation unit through the pipeline, and the wastewater is discharged after the hydrolysis acidification, oxidation and precipitation unit has been treated and the wastewater is tested and meets the standards. The second contact oxidation tank (10), where the wastewater treated by the oxidation and sedimentation unit fails to meet the standards and the influent volume is less than 500 ml / min. When the COD concentration is less than 2000 mg / L, it is discharged into the second contact oxidation tank (10) through the pipeline and discharged after treatment to meet the standard; In the cyclic activated sludge reactor (9), the wastewater treated by the oxidation and sedimentation unit had an influent volume greater than or equal to 500 ml that did not meet the standards. When the COD concentration is greater than or equal to 2000 mg / L and less than 3500 mg / L, it is discharged into the periodic circulating activated sludge reaction tank through the pipeline (9). The periodic circulating activated sludge reactor (9) is fixedly connected to a clean water collection and detection unit.

2. The green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The extraction workshop and other individual units in the factory area of ​​the pharmaceutical company that extracts Chinese medicine are all connected to the accident pool (4), and the water inlet pipe of the accident pool (4) is equipped with an electric valve; The accident pool (4) is fixedly connected to the transfer pool (3) through a pipeline; When the accident is resolved, the wastewater discharged from the accident pool (4) enters the transfer pool (3).

3. The green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The filtration and sedimentation treatment unit includes: The grit chamber (13), mechanical fine grit chamber (14), grit chamber (15) and lifting chamber (16); The wastewater discharged by the pharmaceutical companies that extract traditional Chinese medicine is classified, collected and mixed in a reasonable manner, and then connected in a fixed manner to the bar screen (13), mechanical fine bar screen (14), grit chamber (15) and lifting tank (16) through pipelines; The booster tank (16) is fixedly connected to the regulating tank (1) through a pipeline.

4. The green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The hydrolysis acidification, oxidation, and precipitation unit includes: Hydrolysis acidification tank (5), first contact oxidation tank (6), sedimentation tank (7) and buffer tank (8); The output end of the regulating tank (1) is connected in sequence to the hydrolysis acidification tank (5), the first contact oxidation tank (6), the sedimentation tank (7) and the buffer tank (8) through pipelines; Wastewater from the buffer tank (8) is discharged after passing the wastewater test. The output end of the buffer tank (8) is fixedly connected to the periodic circulating activated sludge reaction tank (9) and the second contact oxidation tank (10) through pipelines.

5. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The output end of the second contact oxidation tank (10) is fixedly connected to the secondary sedimentation tank (12), and the treated water is discharged after meeting the standards.

6. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The clean water collection and detection unit includes: The second clear water tank (18) and the Parshall metering tank (19); The output end of the periodic circulating activated sludge reactor (9) is connected to the second clear water tank (18) and the Parshall metering tank (19) in sequence via pipelines.

7. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in any one of claims 4-5, is characterized in that... The equalization tank (1), hydrolysis acidification tank (5), first contact oxidation tank (6), periodic circulating activated sludge process reaction tank (9), second contact oxidation tank (10) and secondary sedimentation tank (12) are respectively connected to the sludge tank (11) through pipelines and sludge pumps. The lower end of the inner cavity of the sludge tank (11) is fixedly connected to a sludge thickening tank (20), and the lower end of its outer wall is fixedly connected to a sludge lifting pump (21). The output end of the sludge lifting pump (21) is fixedly connected to a filter press (22).

8. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The clean wastewater discharged from the extraction workshop of the pharmaceutical company that extracts traditional Chinese medicine is discharged into the regulating tank (1) through pipeline.

9. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The lower ends of the outer walls of the equalization tank (1), the first contact oxidation tank (6), the periodic circulating activated sludge reaction tank (9), and the second contact oxidation tank (10) are all fixedly connected to aeration blowers (23).

10. A green and low-carbon wastewater treatment system for pharmaceutical companies extracting traditional Chinese medicine, as described in claim 1, is characterized in that... The equalization tank (1), hydrolysis acidification tank (5), first contact oxidation tank (6), periodic circulating activated sludge reaction tank (9), second contact oxidation tank (10) and secondary sedimentation tank (12) are respectively connected to centrifugal fans (24) through pipelines. The centrifugal fan (24) is fixedly connected to the exhaust gas purification equipment (26) at its output end, and the equipment is equipped with a spray structure inside. The output of the circulating water pump (25) is fixedly connected to the input end of the spray structure.

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