A method for treating wastewater produced in the production of cephalosporins

Abstract

The application discloses a kind of to the treatment method of the wastewater generated in producing cephalosporin, S1, physical treatment step: wastewater generated in producing cephalosporin is pumped into pool, then quantitative wood ash is added, and stirring device is used to stir mixing, subsequent standing for a period of time, so that the wood ash in wastewater pool is precipitated, then the upper layer wastewater is extracted by suction filtration device, so that wastewater is separated from precipitated wood ash;The application adopts wood ash when treating wastewater, not only can adjust the PH of wastewater, but also can adsorb particulate matter in wastewater, and wood ash is easy to see, the cost is lower, can reduce the resources consumed when cephalosporin wastewater is treated, reduce the cost of wastewater treatment, and the multi-stage treatment method is used, wastewater can be treated multiple times, greatly reduce the content of harmful substances in wastewater, strengthen the treatment effect of wastewater, so that wastewater discharge will not cause great pollution to the environment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology in the production of cephalosporin drugs, and specifically to a method for treating wastewater generated during the production of cephalosporin drugs. Background Technology

[0002] Cephalosporin wastewater treatment refers to the process of treating wastewater generated during the production of cephalosporin drugs to meet environmental protection requirements. Cephalosporins are antibiotics widely used in the medical field, and their production process requires the treatment of large amounts of wastewater. This wastewater contains a large amount of organic matter, inorganic salts and other harmful substances, which pose a potential threat to the ecological environment and human health.

[0003] For example, patent number CN201210349360.3, with an authorization announcement date of December 17, 2014, describes a method for treating wastewater generated during the production of cephalosporin drugs. This method consists of three treatment steps: anoxic hydrolysis and acidification, electrolysis, and membrane bioreactor treatment. The wastewater generated during the production of synthetic cephalosporins is first subjected to biological hydrolysis and acidification in an anoxic tank to improve its biodegradability. The effluent from this step is then electrolyzed in an electrolysis tank to further remove COD and improve biodegradability. Finally, the effluent flows into a membrane bioreactor for final aerobic biological treatment. The treated wastewater passes through an ultrafiltration membrane in the membrane bioreactor and is then pumped out by an effluent pump, meeting discharge standards before being discharged into an external pipeline or reused in the production process.

[0004] Cephalosporin wastewater treatment typically employs two methods: biological and physicochemical methods. Biological methods utilize microorganisms to degrade organic matter, converting it into harmless substances like water and carbon dioxide. However, this process is time-consuming and cannot quickly treat wastewater. Physicochemical methods utilize chemical substances to react with wastewater, transforming harmful substances into harmless ones. However, this process is resource-intensive. Therefore, there is an urgent need to design a method for treating wastewater generated during the production of cephalosporin drugs to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a method for treating wastewater generated during the production of cephalosporin drugs, thereby overcoming the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for treating wastewater generated during the production of cephalosporin drugs includes the following steps:

[0008] S1. Physical treatment steps: The wastewater generated from the production of cephalosporin drugs is pumped into a pool, and then a certain amount of wood ash is added and mixed using a stirring device. After that, it is left to stand for a period of time to allow the wood ash in the wastewater pool to settle. Then, the upper layer of wastewater is extracted through a filtration device to separate the wastewater from the settled wood ash.

[0009] S2. Pretreatment step: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After electrolysis, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater.

[0010] S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical reagents are added and stirred and mixed using a stirring device to ensure that the wastewater and chemical reagents are fully mixed. After mixing, the mixture is left to stand for a period of time to allow the sediment and wastewater to separate into layers.

[0011] S4. Final processing steps:

[0012] S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained tertiary treated wastewater is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. The wastewater is discharged after a period of time.

[0013] S4.2 Fertilizer production steps: When emergency treatment of wastewater is required, the wastewater obtained from the three treatments can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater to obtain condensate and residual precipitate. The residual precipitate is then mixed with other materials to make organic fertilizer.

[0014] Furthermore, in step S1, the pH value of the organic chemical wastewater needs to be adjusted to 6-9 before mixing with the wood ash. In step S1, the amount of wood ash added is 1000-2500 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated in the biomass boiler.

[0015] Furthermore, the process of using wood ash in step S1 includes the following treatment:

[0016] A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰;

[0017] B. Grind the dried product and pass it through an 80-200 mesh sieve.

[0018] Furthermore, in step S1, the stirring speed during mixing of plant ash is 400-500 r / min, and the stirring time is 60-150 s. In step S1, the settling time of plant ash is 1-1.5 h.

[0019] Furthermore, in step S2, the electrolytic treatment adopts iron-carbon micro-electrolysis, and the electrolysis time is 1-1.5h; in step S2, the oxidation treatment adopts Fenton oxidation, and the oxidation time is 0.8-1.2h.

[0020] Furthermore, in step S3, a degradation agent is selected as the chemical treatment agent.

[0021] Furthermore, in step S3, the stirring speed during chemical treatment is 200-400 r / min, and the stirring time is 80-120 s.

[0022] Furthermore, in step S4.1, when the wastewater is not treated urgently, the selected plants are cabbage and elephant grass.

[0023] Furthermore, the distillation tank used in the emergency wastewater treatment step S4.2 is connected to a condenser via a pipe, which can condense the water vapor discharged from the distillation tank.

[0024] Furthermore, the material mixed with the residual precipitate in the emergency wastewater treatment step S4.2 is the wood ash separated in step S1.

[0025] In the above technical solution, the present invention provides a method for treating wastewater generated during the production of cephalosporin drugs, which has the following beneficial effects:

[0026] (1) The present invention uses wood ash in wastewater treatment, which can not only adjust the pH of wastewater, but also adsorb particulate matter in wastewater. Wood ash is readily available and has a low cost, which can reduce the resources consumed in the treatment of cephalosporin wastewater and reduce the cost of wastewater treatment.

[0027] (2) The multi-stage treatment method adopted in this invention can treat wastewater multiple times, which greatly reduces the content of harmful substances in wastewater, enhances the treatment effect of wastewater, and ensures that the wastewater will not cause significant pollution to the environment after discharge.

[0028] (3) The final treatment step adopted in this invention can treat the wastewater urgently or slowly according to the wastewater treatment needs, and improve the utilization rate of wastewater by planting grass and trees and preparing fertilizer, thereby reducing the waste of wastewater resources. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic flowchart of an embodiment of the method for treating wastewater generated during the production of cephalosporin drugs according to the present invention.

[0031] Figure 2 This is a schematic diagram of the physical treatment process provided in an embodiment of the method for treating wastewater generated during the production of cephalosporin drugs according to the present invention.

[0032] Figure 3 This is a schematic diagram of the pretreatment process provided in an embodiment of the method for treating wastewater generated during the production of cephalosporin drugs according to the present invention.

[0033] Figure 4 This is a schematic diagram of the chemical treatment process provided in an embodiment of the method for treating wastewater generated during the production of cephalosporin drugs according to the present invention.

[0034] Figure 5 This is a schematic diagram of a biological treatment process provided in an embodiment of a method for treating wastewater generated during the production of cephalosporin drugs according to the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1-5 As shown in the figure, an embodiment of the present invention provides a method for treating wastewater generated during the production of cephalosporin drugs, comprising the following steps:

[0037] S1. Physical treatment steps: The wastewater generated from the production of cephalosporin drugs is pumped into a pool, and then a certain amount of wood ash is added and mixed using a stirring device. After that, it is left to stand for a period of time to allow the wood ash in the wastewater pool to settle. Then, the upper layer of wastewater is extracted through a filtration device to separate the wastewater from the settled wood ash.

[0038] S2. Pretreatment step: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After electrolysis, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater.

[0039] S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical reagents are added and stirred and mixed using a stirring device to ensure that the wastewater and chemical reagents are fully mixed. After mixing, the mixture is left to stand for a period of time to allow the sediment and wastewater to separate into layers.

[0040] S4. Final processing steps:

[0041] S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained tertiary treated wastewater is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. The wastewater is discharged after a period of time.

[0042] S4.2 Fertilizer production steps: When emergency treatment of wastewater is required, the wastewater obtained from the three treatments can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater to obtain condensate and residual precipitate. The residual precipitate is then mixed with other materials to make organic fertilizer.

[0043] Specifically, this embodiment includes the following steps:

[0044] S1. Physical Treatment Steps: Wastewater generated from the production of cephalosporin drugs is pumped into a water tank, then a measured amount of wood ash is added and mixed using a stirring device. After a period of settling, the wood ash in the wastewater tank is allowed to settle. Then, the upper layer of wastewater is extracted using a filtration device to separate the wastewater from the settled wood ash. Before mixing the wastewater with the wood ash, the pH value of the organic chemical wastewater needs to be adjusted to 6-9. The amount of wood ash added is 1000-2500 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated from a biomass boiler. The wood ash also undergoes the following treatment before use:

[0045] A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰;

[0046] B. Grind the dried product and pass it through an 80-200 mesh sieve;

[0047] When mixing Chinese herbal ash, the stirring speed should be 400-500 r / min and the stirring time should be 60-150 s. The settling time of the Chinese herbal ash should be 1-1.5 h.

[0048] S2. Pretreatment steps: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After electrolysis, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater. The electrolysis treatment adopts iron-carbon micro-electrolysis, and the electrolysis time is 1-1.5h. The oxidation treatment adopts Fenton oxidation method, and the oxidation time is 0.8-1.2h.

[0049] S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical agents are added and stirred using a stirring device to ensure that the wastewater and chemical agents are fully mixed. After mixing, the mixture is allowed to stand for a period of time to allow the sediment and wastewater to separate into layers. Degradation agents are selected for the chemical treatment. The stirring speed during the chemical treatment is 200-400 r / min, and the stirring time is 80-120 s.

[0050] S4. Final processing steps:

[0051] S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained wastewater from the three treatments is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. After a period of time, the wastewater is discharged. When no emergency treatment of the wastewater is required, the selected plants are cabbage and elephant grass.

[0052] S4.2 Fertilizer Production Steps: When emergency treatment of wastewater is required, the wastewater obtained from the three-stage treatment can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater, resulting in condensate and residual precipitate. The residual precipitate is then mixed with other materials to produce organic fertilizer. The distillation tank used in the emergency wastewater treatment step is connected to a condenser through a pipe, which can condense the water vapor discharged from the distillation tank. The material mixed with the residual precipitate in the emergency wastewater treatment step is the wood ash separated in step S1.

[0053] The present invention provides a method for treating wastewater generated during the production of cephalosporin drugs, which has beneficial effects.

[0054] In one embodiment provided by the present invention, such as Figure 2 As shown, before mixing the wastewater with wood ash, the pH value of the organic chemical wastewater needs to be adjusted to 6-9. The amount of wood ash added is 1000-2500 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated in the biomass boiler. The wood ash also requires the following treatment before use:

[0055] A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰;

[0056] B. Grind the dried product and pass it through an 80-200 mesh sieve;

[0057] When mixing Chinese herbal ash, the stirring speed should be 400-500 r / min and the stirring time should be 60-150 s. The settling time of the Chinese herbal ash should be 1-1.5 h.

[0058] In another embodiment provided by the present invention, such as Figure 3As shown, the intermediate electrolysis treatment uses iron-carbon micro-electrolysis, and the electrolysis time is 1-1.5h; the intermediate oxidation treatment uses Fenton oxidation, and the oxidation time is 0.8-1.2h.

[0059] In another embodiment provided by the present invention, such as Figure 4 As shown, the chemical treatment agent is a degradation agent, the stirring speed is 200-400 r / min, and the stirring time is 80-120 s.

[0060] In one embodiment provided by the present invention, such as Figure 5 As shown, when the medium wastewater is not treated urgently, the selected plants are cabbage and elephant grass. The distillation tank used in the emergency treatment step of medium wastewater is connected to the condenser through a pipe, which can condense the water vapor discharged from the distillation tank. The material mixed with the residual precipitate in the emergency treatment step of medium wastewater is the plant ash separated in step S1.

[0061] Example 1

[0062] A method for treating wastewater generated during the production of cephalosporin drugs includes the following steps:

[0063] S1. Physical Treatment Steps: Wastewater generated from the production of cephalosporin drugs is pumped into a water tank, then a measured amount of wood ash is added and mixed using a stirring device. After a period of settling, the wood ash in the wastewater tank is allowed to settle. Then, the upper layer of wastewater is extracted using a filtration device to separate the wastewater from the settled wood ash. Before mixing the wastewater and wood ash, the pH value of the organic chemical wastewater needs to be adjusted to 6-9. The amount of wood ash added is 1000-2500 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated from biomass boilers. The wood ash also undergoes the following treatment before use:

[0064] A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰;

[0065] B. Grind the dried product and pass it through an 80-200 mesh sieve;

[0066] When mixing Chinese herbal ash, the stirring speed should be 400-500 r / min and the stirring time should be 60-150 s. The settling time of the Chinese herbal ash should be 1-1.5 h.

[0067] S2. Pretreatment steps: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After electrolysis, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater. The electrolysis treatment adopts iron-carbon micro-electrolysis, and the electrolysis time is 1-1.5h. The oxidation treatment adopts Fenton oxidation method, and the oxidation time is 0.8-1.2h.

[0068] S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical agents are added and stirred using a stirring device to ensure that the wastewater and chemical agents are fully mixed. After mixing, the mixture is allowed to stand for a period of time to allow the sediment and wastewater to separate into layers. Degradation agents are selected for the chemical treatment. The stirring speed during the chemical treatment is 200-400 r / min, and the stirring time is 80-120 s.

[0069] S4. Final processing steps:

[0070] S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained wastewater from the three treatments is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. After a period of time, the wastewater is discharged. When no emergency treatment of the wastewater is required, the selected plants are cabbage and elephant grass.

[0071] S4.2 Fertilizer Production Steps: When emergency treatment of wastewater is required, the wastewater obtained from the three-stage treatment can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater, resulting in condensate and residual precipitate. The residual precipitate is then mixed with other materials to produce organic fertilizer. The distillation tank used in the emergency wastewater treatment step is connected to a condenser through a pipe, which can condense the water vapor discharged from the distillation tank. The material mixed with the residual precipitate in the emergency wastewater treatment step is the wood ash separated in step S1.

[0072] Example 2

[0073] A method for treating wastewater generated during the production of cephalosporin drugs includes the following steps:

[0074] S1. Physical Treatment Steps: Wastewater generated from the production of cephalosporin drugs is pumped into a water tank, and then a certain amount of wood ash is added and mixed using a stirring device. Afterward, it is allowed to stand for a period of time to allow the wood ash in the wastewater tank to settle. Then, the upper layer of wastewater is extracted using a filtration device to separate the wastewater from the settled wood ash. Before mixing the wastewater and wood ash, the pH value of the organic chemical wastewater needs to be adjusted to 6-9. The amount of wood ash added is 800-2000 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated from biomass boilers. The wood ash also undergoes the following treatment before use:

[0075] A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰;

[0076] B. Grind the dried product and pass it through an 80-200 mesh sieve;

[0077] When mixing Chinese herbal ash, the stirring speed should be 400-500 r / min and the stirring time should be 60-150 s. The settling time of the Chinese herbal ash should be 1-1.5 h.

[0078] S2. Pretreatment steps: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After electrolysis, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater. The electrolysis treatment adopts iron-carbon micro-electrolysis, and the electrolysis time is 1-1.5h. The oxidation treatment adopts Fenton oxidation method, and the oxidation time is 0.8-1.2h.

[0079] S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical agents are added and stirred using a stirring device to ensure that the wastewater and chemical agents are fully mixed. After mixing, the mixture is allowed to stand for a period of time to allow the sediment and wastewater to separate into layers. Degradation agents are selected for the chemical treatment. The stirring speed during the chemical treatment is 200-400 r / min, and the stirring time is 80-120 s.

[0080] S4. Final processing steps:

[0081] S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained wastewater from the three treatments is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. After a period of time, the wastewater is discharged. When no emergency treatment of the wastewater is required, the selected plants are cabbage and elephant grass.

[0082] S4.2 Fertilizer Production Steps: When emergency treatment of wastewater is required, the wastewater obtained from the three-stage treatment can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater, resulting in condensate and residual precipitate. The residual precipitate is then mixed with other materials to produce organic fertilizer. The distillation tank used in the emergency wastewater treatment step is connected to a condenser through a pipe, which can condense the water vapor discharged from the distillation tank. The material mixed with the residual precipitate in the emergency wastewater treatment step is the wood ash separated in step S1.

[0083] The amount of wood ash used in Examples 1 and 2 differed, while the rest remained the same. The results of wastewater testing are shown in the following table:

[0084]

[0085] As can be seen from the chart, Example 1 is the best example.

[0086] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for treating wastewater generated during the production of cephalosporin drugs, characterized in that, Includes the following steps: S1. Physical treatment steps: The wastewater generated from the production of cephalosporin drugs is pumped into a pool, and then a certain amount of wood ash is added and mixed using a stirring device. After that, it is left to stand for a period of time to allow the wood ash in the wastewater pool to settle. Then, the upper layer of wastewater is extracted through a filtration device to separate the wastewater from the settled wood ash. S2. Pretreatment step: The treated wastewater obtained from the above treatment is pumped into another electrolysis tank, and then electricity is turned on to electrolyze the wastewater. After the electrolysis is completed, the waste liquid is pumped into an oxidation tank, and then the oxidation equipment is started to oxidize the wastewater. S3. Chemical treatment steps: After the oxidation treatment is completed, the secondary treated wastewater is pumped into the chemical treatment tank, and then a certain amount of chemical reagents are added and stirred and mixed using a stirring device to ensure that the wastewater and chemical reagents are fully mixed. After mixing, the mixture is left to stand for a period of time to allow the sediment and wastewater to separate into layers. S4. Final processing steps: S4.1 Biological treatment steps: When no emergency treatment of wastewater is required, the obtained tertiary treated wastewater is pumped into a hydroponic tank, and then the prepared plants are planted in the hydroponic tank to achieve hydroponic treatment of the wastewater. The wastewater is discharged after a period of time. S4.2 Fertilizer production steps: When emergency treatment of wastewater is required, the wastewater obtained from the three treatments can be pumped into a distillation tank. Then, the distillation tank is started to heat the wastewater to obtain condensate and residual precipitate. The residual precipitate is then mixed with other materials to make organic fertilizer.

2. The method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, Before mixing the wastewater with wood ash in step S1, the pH value of the organic chemical wastewater needs to be adjusted to 6-9. The amount of wood ash added in step S1 is 1000-2500 mg per liter of organic chemical wastewater. The wood ash is the ash residue generated in the biomass boiler.

3. The method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, The process of using wood ash in step S1 includes the following treatment: A. Dry the wood ash at 100-600℃ until the weight change rate is less than 2‰; B. Grind the dried product and pass it through an 80-200 mesh sieve.

4. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, In step S1, the stirring speed during mixing of plant ash is 400-500 r / min, and the stirring time is 60-150 s. The settling time of plant ash in step S1 is 1-1.5 h.

5. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, In step S2, the electrolytic treatment uses iron-carbon micro-electrolysis and the electrolysis time is 1-1.5h. In step S2, the oxidation treatment uses Fenton oxidation and the oxidation time is 0.8-1.2h.

6. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, In step S3, a degradation agent is selected for the chemical treatment.

7. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, In step S3, the stirring speed during chemical treatment is 200-400 r / min, and the stirring time is 80-120 s.

8. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, When the wastewater is not treated urgently in step S4.1, the selected plants are cabbage and elephant grass.

9. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, The distillation tank used in the emergency wastewater treatment step S4.2 is connected to a condenser via a pipe, which can condense the water vapor discharged from the distillation tank.

10. A method for treating wastewater generated during the production of cephalosporin drugs according to claim 1, characterized in that, In step S4.2, the material mixed with the residual precipitate in the emergency wastewater treatment step is the wood ash separated in step S1.

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