A biological pharmaceutical wastewater treatment device and treatment method

Abstract

The present invention discloses a biological pharmaceutical wastewater treatment device and a treatment method, which is connected to a wastewater input pipeline and includes an evaporation device, a concentrated liquid collection device, a COD molecular sieve filter, and an activated carbon filter device connected in sequence. The evaporation device includes a wastewater MVR evaporator; the COD molecular sieve filter includes a regeneration device, a filter tank, and filter materials located in the filter tank. The activated carbon filter device includes a number of multi-stage activated carbon adsorbers, and the activated carbon adsorbers perform non-discriminatory adsorption filtration on the filtered distilled water and then discharge it. The present invention has opened up a new treatment method for biological pharmaceutical wastewater that breaks through the traditional process. Existing biological pharmaceutical wastewater treatment technologies mainly rely on biochemical treatment processes. The present invention adopts a combination of evaporation, molecular sieve COD filtration, and activated carbon filters to form a brand-new all-physical wastewater treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a biological pharmaceutical wastewater treatment device and a treatment method. Background Art

[0002] In recent years, the biological pharmacy in China has developed rapidly, which also brings serious environmental problems. Pharmaceutical industrial wastewater refers to the wastewater discharged from factories manufacturing antibiotics, antibacterial agents, antiserum, organic and inorganic medicines, etc. The quantity and quality of the wastewater vary according to the types of medicines produced, but the wastewater discharged from sections such as distillation and bottle washing is basically the same. In addition to containing animal-based wastewater mainly from animal organs and plant-based wastewater mainly from herbs, the production wastewater of antibiotics, antiserum, etc. generally contains toxic substances such as fluorine, cyanide, phenol, cresol and mercury compounds, and at the same time contains a large amount of biochemical oxygen demand (BOD), chemical oxygen demand (COD) and colloidal substances. Since pharmaceutical wastewater has high concentrations of refractory organic substances, salts and ammonia nitrogen and cannot be directly subjected to biochemical treatment, it must be removed in the early stage. Moreover, the concentration of ammonia nitrogen is difficult to control and is very unstable. If the ammonia nitrogen concentration is not accurately provided, there will be a large deviation in the design of the structure load, seriously affecting the civil engineering and equipment investment. At present, for such wastewater, most domestic and foreign methods mostly adopt the physicochemical pretreatment - anaerobic - aerobic biological treatment process. The core of this process focuses on the biochemical process section. After the salts in the wastewater are removed by an evaporator through pretreatment, the wastewater enters the biochemical system. The starting point of this process is to reduce the organic matter concentration of the wastewater as much as possible through pretreatment and anaerobic treatment, and at the same time improve the biodegradability of the wastewater to ensure the stable operation of the subsequent aerobic biological treatment. However, these processes have the disadvantages of low removal rates of organic matter and ammonia nitrogen, large civil engineering investment, high energy consumption, as well as a large number of process equipment involved and a long process.

[0003] Therefore, designing a biological pharmaceutical wastewater treatment device and a treatment method to treat biological pharmaceutical wastewater in the form of combining a wastewater MVR evaporator, a COD molecular sieve filter and an activated carbon filter. This treatment method uses the evaporator to remove salts and high-boiling-point organic substances, and the remaining low-boiling-point organic substances are removed by the COD molecular sieve filter. Finally, an activated carbon filter is set as a safeguard measure for the effluent. It can improve the treatment effect and treatment efficiency, shorten the process flow, reduce the investment cost, and realize the resource utilization of wastewater, which obviously has practical significance. Summary of the Invention

[0004] The object of the present invention is to provide a biological pharmaceutical wastewater treatment device and a treatment method to improve the filtration accuracy and filtration efficiency in the form of combining a wastewater MVR evaporator, a COD molecular sieve filter and an activated carbon filter.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a biological pharmaceutical wastewater treatment device, which is connected to a wastewater input pipeline, and includes an evaporation device, a COD molecular sieve filter, and an activated carbon filter device connected in sequence. The evaporation device is connected to the wastewater input pipeline, and the evaporation device includes a wastewater MVR evaporator; wastewater enters the wastewater MVR evaporator for evaporation separation to obtain evaporation condensate and evaporator concentrate;

[0006] The COD molecular sieve filter includes a regeneration device, a filter tank, and filter materials located in the filter tank. The evaporation condensate enters the filter tank for COD filtration to obtain filtered distilled water; the regeneration device cleans the filter materials in the filter tank to obtain filter cleaner liquid;

[0007] The activated carbon filter device includes a number of multi-stage activated carbon adsorbers, and the activated carbon adsorbers perform non-discriminatory adsorption filtration on the filtered distilled water and then discharge it;

[0008] It further includes a concentrate collection device, and the concentrate collection device is connected to the evaporation device and the COD molecular sieve filter to receive the evaporator concentrate and the filter cleaner liquid.

[0009] Preferably, a pretreatment device is provided between the evaporation device and the wastewater input pipeline. The pretreatment device includes a pre-filter and a buffer device. The inlet of the buffer device is connected to the pretreatment device and the COD molecular sieve filter, and the outlet of the buffer device is connected to the evaporation device.

[0010] Preferably, a pH adjustment device is further connected to the buffer device. The pH adjustment device includes a monitoring system, an acidic cleaning agent storage tank, and an alkaline cleaning agent storage tank; the monitoring system selects to transport a cleaning agent from the acidic cleaning agent storage tank or the alkaline cleaning agent storage tank to the buffer device according to the detected pH value of the wastewater in the buffer device to adjust the pH value of the wastewater entering the wastewater MVR evaporator.

[0011] Preferably, the buffer device includes a wastewater collection tank and a stirrer located in the wastewater collection tank. The stirrer stirs the wastewater from different devices and the cleaning agent transported by the pH adjustment device in the wastewater collection tank to achieve the purpose of homogeneous and quantitative treatment and pH value adjustment.

[0012] In the above text, the inlet of the buffer device is connected to the pretreatment device to receive wastewater from the wastewater input pipeline; the inlet of the buffer device is connected to the COD molecular sieve filter to receive the wastewater treated by the evaporation device and the COD molecular sieve filter, so as to perform cyclic treatment on the unqualified wastewater.

[0013] Preferably, the monitoring system includes a sensor, a control system, and a control valve. The control valve includes an acid supply pump connected to the acidic cleaning agent storage tank and an alkali supply pump connected to the alkaline cleaning agent storage tank. The sensor is connected to the wastewater MVR evaporator to detect the pH value of the wastewater in the wastewater MVR evaporator. The control system is used to receive the detection results of the sensor and manual input instructions, and transmit signals to the control valve according to the detection results of the sensor or manual input instructions. The control valve starts the acid supply pump or the alkali supply pump according to the signals.

[0014] Preferably, the monitoring system further includes automatic medicine supplementing equipment. The number of the automatic medicine supplementing equipment is two. The two automatic medicine supplementing equipment are respectively connected to the acidic cleaning agent storage tank and the alkaline cleaning agent storage tank. The automatic medicine supplementing equipment includes an acid and alkali resistant pressure analog liquid level gauge and a medicine supplementing pump, and medicine is supplemented through the medicine supplementing pump according to the detection results of the pressure analog liquid level gauge.

[0015] Preferably, the evaporation device further includes an antifoaming agent storage tank connected to the wastewater MVR evaporator.

[0016] Preferably, the wastewater MVR evaporator includes a Roots pump, a heat exchanger, a waste liquid chamber, and an evaporation chamber. The water vapor in the waste liquid to be treated is extracted by the Roots pump and compressed. The compressed high-temperature steam flows through the heat exchanger to the steam chamber, and transfers heat to the waste liquid to be treated in the waste liquid chamber. The water in the waste liquid to be treated is heated and boils continuously for evaporation, while the high-temperature steam in the steam chamber is cooled by heat exchange to become the evaporated condensate water. The evaporator concentrate forms a circulating liquid in the heat exchanger. The evaporator concentrate is continuously circulated and concentrated, and then discharged to the concentrate collection device after reaching the set concentration time.

[0017] In the above text, after evaporation treatment, the steam in the wastewater MVR evaporator is separated from non-volatile organic and inorganic substances. The non-volatile organic and inorganic substances form a circulating liquid in the heat exchanger as the evaporator concentrate until they are discharged to the concentrate collection device. The steam is cooled and liquefied into condensate water, and the condensate water enters the filtration tank for COD filtration.

[0018] Preferably, the evaporation temperature of the wastewater MVR evaporator is 80°C - 85°C, and the required pH value for evaporation is 7 - 9.

[0019] Preferably, the filtering material in the filtering tank includes molecular sieves. The molecular sieves include organic polymer copolymers mainly composed of high molecular organic materials. The high molecular organic materials include styrene and divinylbenzene. The specific surface area of the molecular sieve material is 450 - 600m 2 / g.

[0020] Preferably, the regeneration device includes a cleaning liquid tank and a stirrer located in the cleaning liquid tank. The cleaning liquid tank includes a double-layer tank-in-tank structure, including an outer tank and an inner tank. The outer tank contains acidic regeneration liquid, and the inner tank contains alkaline regeneration liquid. Independent liquid level switches and water replenishment ports are configured for the inner tank and the outer tank to control the liquid levels of their respective regeneration liquids.

[0021] Preferably, the activated carbon adsorber includes an activated carbon adsorption tank, a water distribution device, and a water collection device. The water distribution device is of the upper-inlet and horn-shaped water distribution type, and the water collection device is of the multi-hole plate filter water cap water collection structure. A pressure sampling interface is left outside the activated carbon adsorption tank to facilitate the normal operation monitoring of the device. The filtration rate of the activated carbon adsorption tank is 10 m / h, and the thickness of the activated carbon filter layer is 1000 mm.

[0022] Preferably, a tail gas treatment device is also provided. The tail gas treatment device is installed on the top of the activated carbon adsorber, and its purpose is to collect the non-condensable gas generated during the wastewater treatment process and discharge it to the air after adsorption by the tail gas treatment device.

[0023] Preferably, a clear liquid buffer tank and a wastewater neutralization tank are also provided at the outlet of the activated carbon filtration device. The inlet of the wastewater neutralization tank is connected to the clear liquid buffer tank. The clear liquid buffer tank is used to receive the clear liquid after filtration by the activated carbon filtration device. The outlet of the clear liquid buffer tank is connected to the inlet of the COD molecular sieve filter. There is a first detection device at the clear liquid buffer tank. If the clear liquid detected by the first detection device in the clear liquid buffer tank meets the standard, the clear liquid moves into the wastewater neutralization tank; if it does not meet the standard, it moves into the COD molecular sieve filter for re-filtration.

[0024] Preferably, the inlet of the wastewater neutralization tank is also connected to the emergency fire pool, rainwater collection pool, and domestic sewage pool set in the factory. The wastewater neutralization tank includes a storage tank, a neutralization stirrer, and a second detection device. The neutralization stirrer stirs the wastewater from the above different sewage pools in the storage tank. If the wastewater detected by the second detection device in the storage tank meets the standard, the wastewater moves to the discharge port for discharge; if it does not meet the standard, it moves into the pretreatment device for re-filtration.

[0025] This application also claims to protect a method for treating biopharmaceutical wastewater, which uses the biopharmaceutical wastewater treatment equipment described above and includes the following steps:

[0026] S1. The wastewater enters the evaporation device through the wastewater input pipeline;

[0027] S2. The wastewater enters the wastewater MVR evaporator for evaporation separation to obtain evaporation condensate and evaporator concentrate. The evaporator concentrate flows into the concentrate collection device;

[0028] S3. The evaporation condensate in step S2 flows into the COD molecular sieve filter;

[0029] S4. The filter tank in the COD molecular sieve filter filters the evaporated and condensed water in step S2 for COD filtration to obtain filtered distilled water; the regeneration device cleans the filter material in the filter tank to obtain a filter cleaning solution; the filter cleaning solution flows into the concentrated liquid collection device;

[0030] S5. The activated carbon adsorber in the activated carbon filtration device performs non-discriminatory adsorption filtration on the filtered distilled water and then discharges it.

[0031] In the above text, before step S1, the wastewater needs to be pre-filtered through a pretreatment device. By detecting the pH of the wastewater in the buffer device, the pH adjustment device is activated to adjust the pH value of the wastewater, ensuring that the pH value of the wastewater entering the wastewater MVR evaporator reaches the required standard and reducing the risks of evaporator corrosion and scaling.

[0032] In the above text, the filtered distilled water in step S4 needs to be detected. If the filtered distilled water in step S4 does not meet the set standard, the above steps S2 - S4 are repeated until the obtained filtered distilled water meets the set standard; if the treated wastewater in step S4 meets the set standard, it flows into the activated carbon filtration device.

[0033] In the above text, before the discharge in step S5, the clear liquid also needs to be discharged into the clear liquid buffer tank. The first detection device is used to detect whether the clear liquid in the clear liquid buffer tank meets the standard. If it meets the standard, the clear liquid is moved into the wastewater neutralization tank; if it does not meet the standard, it is moved into the COD molecular sieve filter for re-filtration.

[0034] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0035] 1. The present invention has opened up a new treatment method for biopharmaceutical wastewater that breaks through the traditional process. Existing biopharmaceutical wastewater treatment technologies mainly rely on biochemical treatment processes. The present invention combines evaporation, molecular sieve COD filtration, and activated carbon filtration to form a new all-physical wastewater treatment process.

[0036] 2. The process flow of the present invention is simple, fully automated, and has a user-friendly interface. Compared with the existing biochemical processes, it greatly reduces the input of labor costs; the present invention can achieve standardized production and modular import, reducing production costs and user investment, without the need for repeated construction, and can be relocated at any time following the production line.

[0037] 3. The present invention can achieve a new model, open up the circular economy market, and expand the leasing recycling business. Description of the Drawings

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, some of the drawings in the following description are embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0039] Figure 1 It is a process flow block diagram of an embodiment.

[0040] Figure 2 It is a schematic structural diagram of a pretreatment device, an evaporation device, and a concentrated liquid collection device in an embodiment.

[0041] Figure 3 It is a schematic structural diagram of a COD molecular sieve filter and an activated carbon filtration device in an embodiment.

[0042] Figure 4 It is a schematic structural diagram of a cleaning liquid tank in an embodiment.

[0043] Figure 5 It is a schematic structural diagram of a wastewater neutralization tank in an embodiment.

[0044] Among them, 1. Wastewater input pipeline; 2. Evaporation device; 3. COD molecular sieve filter; 4. Activated carbon filtration device; 5. Tail gas treatment device; 6. Concentrated liquid collection device; 7. Pretreatment device; 8. pH adjustment device; 9. Clear liquid buffer tank; 10. Wastewater neutralization tank; 11. Emergency fire pool; 12. Rainwater collection pool; 13. Domestic sewage pool; 14. Storage tank; 15. Neutralization stirrer; 16. First detection device;

[0045] 21. Wastewater MVR evaporator; 22. Defoamer storage tank;

[0046] 31. Regeneration device; 32. Filter tank; 33. Cleaning liquid tank; 34. Stirrer; 35. Outer tank; 36. Inner tank;

[0047] 41. Activated carbon adsorber;

[0048] 71. Prefilter; 72. Buffer device;

[0049] 81. Acid cleaning agent storage tank; 82. Alkaline cleaning agent storage tank. Specific Embodiments

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment 1

[0052] As Figures 1 - 5 shown, a biological pharmaceutical wastewater treatment device is connected to the wastewater input pipeline 1, and includes an evaporation device 2, a COD molecular sieve filter 3, and an activated carbon filter device 4 connected in sequence. The evaporation device 2 is connected to the wastewater input pipeline 1. The evaporation device 2 includes a wastewater MVR evaporator 21; wastewater enters the wastewater MVR evaporator 21 for evaporation separation to obtain evaporation condensate and evaporator concentrate.

[0053] The COD molecular sieve filter 3 includes a regeneration device 31, a filter tank 32, and filter materials located in the filter tank 32. The evaporation condensate enters the filter tank 32 for COD filtration to obtain filtered distilled water; the regeneration device 31 cleans the filter materials in the filter tank 32 to obtain filter cleaner liquid.

[0054] The activated carbon filter device 4 includes a number of multi-stage activated carbon adsorbers 41, and the activated carbon adsorbers 41 perform non-discriminatory adsorption filtration on the filtered distilled water and then discharge it.

[0055] It further includes a concentrate collection device 6, and the concentrate collection device 6 is connected to the evaporation device 2 and the COD molecular sieve filter 3 to receive the evaporator concentrate and the filter cleaner liquid.

[0056] Preferably, a pretreatment device 7 is provided between the evaporation device 2 and the wastewater input pipeline 1. The pretreatment device 7 includes a pre-filter 71 and a buffer device 72. The inlet of the buffer device 72 is connected to the pretreatment device 7 and the COD molecular sieve filter 3, and the outlet of the buffer device 72 is connected to the evaporation device 2.

[0057] Preferably, a pH adjustment device 8 is further connected to the buffer device 72. The pH adjustment device 8 includes a monitoring system, an acidic cleaning agent storage tank 81, and an alkaline cleaning agent storage tank 82; the monitoring system selects to transport a cleaning agent from the acidic cleaning agent storage tank 81 or the alkaline cleaning agent storage tank 82 to the buffer device 72 according to the detected pH value of the wastewater in the buffer device 72 to adjust the pH value of the wastewater entering the wastewater MVR evaporator 21.

[0058] Preferably, the buffer device 72 includes a waste water collection tank and a stirrer 34 located in the waste water collection tank. The stirrer 34 stirs the waste water from different devices in the waste water collection tank and the cleaning agent conveyed by the pH adjustment device 8 to achieve the purpose of homogeneous and quantitative treatment and pH value adjustment.

[0059] In the above text, the inlet of the buffer device 72 is connected to the pretreatment device 7 to receive the waste water from the waste water input pipe 1; the inlet of the buffer device 72 is connected to the COD molecular sieve filter 3 to receive the waste water treated by the evaporation device 2 and the COD molecular sieve filter 3, so as to perform cyclic treatment on the unqualified waste water.

[0060] Preferably, the monitoring system includes a sensor, a control system, and a control valve. The control valve includes an acid supply pump connected to the acidic cleaning agent storage tank 81 and an alkali supply pump connected to the alkaline cleaning agent storage tank 82. The sensor is connected to the waste water MVR evaporator 21 to detect the pH value of the waste water in the waste water MVR evaporator 21; the control system is used to receive the detection results of the sensor and the manual input instructions, and transmit signals to the control valve according to the detection results of the sensor or the manual input instructions. The control valve starts the acid supply pump or the alkali supply pump according to the signal.

[0061] Preferably, the monitoring system further includes an automatic medicine replenishment device. The number of the automatic medicine replenishment devices is two. The two automatic medicine replenishment devices are respectively connected to the acidic cleaning agent storage tank 81 and the alkaline cleaning agent storage tank 82. The automatic medicine replenishment device includes an acid and alkali resistant pressure analog liquid level gauge and a medicine replenishment pump, and replenishes medicine through the medicine replenishment pump according to the detection results of the pressure analog liquid level gauge.

[0062] Preferably, the evaporation device 2 further includes an antifoaming agent storage tank 1422 connected to the waste water MVR evaporator 21.

[0063] Preferably, the waste water MVR evaporator 21 includes a Roots pump, a heat exchanger, a waste liquid chamber, and an evaporation chamber; the water vapor in the waste liquid to be treated is extracted by the Roots pump and compressed. The compressed high-temperature steam flows through the heat exchanger to the steam chamber, and transfers heat to the waste liquid to be treated in the waste liquid chamber. The water in the waste liquid to be treated boils and evaporates continuously, while the high-temperature steam in the steam chamber is cooled by heat exchange to become the evaporated condensed water after evaporation; the evaporator concentrate forms a circulating liquid in the heat exchanger; the evaporator concentrate is continuously circulated and concentrated, and is discharged to the concentrate collection device 6 after reaching the set concentration time.

[0064] In the above text, after evaporation treatment, the steam in the wastewater MVR evaporator 21 is separated from non-volatile organic and inorganic substances. The non-volatile organic and inorganic substances form a circulating liquid in the heat exchanger as the evaporator concentrate until they are discharged to the concentrate collection device 6; the steam is cooled and liquefied into evaporation condensate water, and the evaporation condensate water enters the filtration tank 32 for COD filtration.

[0065] Preferably, the evaporation temperature of the wastewater MVR evaporator 21 is 80°C - 85°C, and the pH value required for evaporation is 7 - 9.

[0066] Preferably, the filtering material in the filtering tank 32 includes molecular sieves. The molecular sieves include an organic polymer copolymer mainly composed of a high molecular organic material. The high molecular organic material includes styrene and divinylbenzene. The specific surface area of the molecular sieve material is 450 - 600m 2 / g.

[0067] Preferably, the regeneration device 31 includes a cleaning liquid tank 33 and a stirrer 34 located in the cleaning liquid tank 33. The cleaning liquid tank 33 includes a double-layer tank-in-tank structure, including an outer tank 35 and an inner tank 36. The outer tank 35 contains an acidic regeneration liquid, and the inner tank 36 contains an alkaline regeneration liquid; the inner tank 36 and the outer tank 35 are equipped with independent liquid level switches and water replenishment ports to control the liquid levels of their respective regeneration liquids.

[0068] Preferably, the activated carbon adsorber 41 includes an activated carbon adsorption tank, a water distribution device, and a water collection device. The water distribution device is for upward water inlet and horn-shaped water distribution, and the water collection device is a porous plate filter cap water collection structure; a pressure sampling interface is left outside the activated carbon adsorption tank to facilitate the normal operation monitoring of the device. The filtration rate of the activated carbon adsorption tank is 10m / h, and the thickness of the activated carbon filter layer is 1000mm.

[0069] Preferably, a tail gas treatment device 5 is also provided. The tail gas treatment device 5 is installed on the top of the activated carbon adsorber 41, and its purpose is to collect the non-condensable gas generated during the wastewater treatment process and discharge it to the air after adsorption by the tail gas treatment device 5.

[0070] Preferably, a clear liquid buffer tank 9 and a wastewater neutralization tank 10 are also provided at the outlet of the activated carbon filtration device 4. The inlet of the wastewater neutralization tank 10 is connected to the clear liquid buffer tank 9. The clear liquid buffer tank 9 is used to receive the clear liquid after filtration by the activated carbon filtration device 4. The outlet of the clear liquid buffer tank 9 is connected to the inlet of the COD molecular sieve filter 3. There is a first detection device 16 at the clear liquid buffer tank 9. If the clear liquid detected by the first detection device 16 in the clear liquid buffer tank 9 meets the standard, the clear liquid moves into the wastewater neutralization tank 10; if it does not meet the standard, it moves into the COD molecular sieve filter 3 for re-filtration.

[0071] Preferably, the inlet of the wastewater neutralization tank 10 is also connected to the emergency fire pool 11, rainwater collection pool 12, and domestic sewage pool 13 provided in the factory. The wastewater neutralization tank 10 includes a storage tank 14, a neutralization stirrer 15, and a second detection device. The neutralization stirrer 15 stirs the wastewater from the above different sewage tanks in the storage tank 14. If the wastewater in the storage tank 14 is detected to meet the standards by the second detection device, the wastewater moves to the discharge port for discharge; if not, it moves to the pretreatment device 7 for re-filtration.

[0072] Embodiment 2

[0073] This embodiment is based on the above Embodiment 1, and the same parts as the above embodiment will not be elaborated.

[0074] This embodiment relates to a method for treating biopharmaceutical wastewater, which uses the biopharmaceutical wastewater treatment equipment described above and includes the following steps:

[0075] S1. The wastewater enters the evaporation device 2 through the wastewater input pipeline 1;

[0076] S2. The wastewater enters the wastewater MVR evaporator 21 for evaporation separation to obtain evaporation condensate and evaporator concentrate, and the evaporator concentrate flows into the concentrate collection device 6;

[0077] S3. The evaporation condensate in step S2 flows into the COD molecular sieve filter 3;

[0078] S4. The filter tank 32 in the COD molecular sieve filter 3 filters the evaporation condensate in step S2 for COD to obtain filtered distilled water; the regeneration device 31 cleans the filter material in the filter tank 32 to obtain filter cleaning liquid; the filter cleaning liquid flows into the concentrate collection device 6;

[0079] S5. The activated carbon adsorber 41 in the activated carbon filtration device 4 performs non-discriminatory adsorption filtration on the filtered distilled water and then discharges it.

[0080] In the above text, before step S1, the wastewater needs to be pre-filtered through the pretreatment device 7, and the pH of the wastewater in the buffer device 72 is detected to start the pH adjustment device 8 to adjust the pH value of the wastewater, ensuring that the pH value of the wastewater entering the wastewater MVR evaporator 21 reaches the required standard and reducing the risk of evaporator corrosion and scaling.

[0081] In the above text, the filtered distilled water in step S4 needs to be detected. If the filtered distilled water in step S4 does not meet the set standards, the above steps S2 - S4 are repeated until the obtained filtered distilled water meets the set standards; if the treated wastewater in step S4 meets the set standards, it flows into the activated carbon filtration device 4.

[0082] In the above text, before the discharge in step S5, the supernatant also needs to be discharged into the supernatant buffer tank 9. The first detection device is used to detect whether the supernatant in the supernatant buffer tank 9 meets the standards. If it meets the standards, the supernatant is moved into the wastewater neutralization tank 10. If it does not meet the standards, it is moved into the COD molecular sieve filter 3 for re-filtration.

[0083] Comparative Example 1

[0084] The wastewater treatment process adopted in this comparative example is MVR evaporator + UASB + anoxic + aerobic + MBR membrane + sludge dewatering. The main treatment principle is the oxidation and biodegradation of organic matter. The main treatment principle is the oxidation and biodegradation of organic matter. The wastewater intercepts salts through MVR. Subsequently, the refractory organic matter in the water is degraded through the UASB anaerobic reactor and the anoxic-aerobic combined process. Finally, solid-liquid separation is carried out through the MBR membrane. The remaining sludge is dewatered and disposed of.

[0085] Wastewater with a COD concentration of 10000 mg / L is respectively introduced into Example 1 and Comparative Example 1 for wastewater treatment. The treatment results are shown in Table 1 below.

[0086] Table 1

[0087]

[0088] It can be clearly seen from Table 1 above that the wastewater treatment method adopted in Example 1 has higher treatment efficiency compared with Comparative Example 1, and the floor area of the wastewater treatment equipment is smaller, the wastewater treatment effect is better, and the effluent COD concentration is significantly reduced.

[0089] Comparative Example 2

[0090] The difference between this comparative example and Example 1 is that the activated carbon filter described in Example 1 is not set in this comparative example.

[0091] Wastewater with a COD concentration of 10000 mg / L is respectively introduced into Example 1 and Comparative Example 1 for wastewater treatment. The treatment results are shown in Table 2 below.

[0092] Table 2

[0093]

[0094] In addition, the effluent COD concentration in Example 1 is maintained at 40 - 80 mg / L, the standard deviation is 3.9, and the fluctuation coefficient is 6.55%. In Comparative Example 2, the effluent COD concentration is maintained at 50 - 250 mg / L, the standard deviation is 23.2, and the fluctuation coefficient is 17.73%. It can be clearly seen that Example 1 significantly reduces the value of the effluent COD, and the fluctuation coefficient is smaller, and the filtration is more stable.

[0095] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biopharmaceutical wastewater treatment equipment, characterized in that: connected to the wastewater input pipeline, comprising an evaporation device, a COD molecular sieve filter and an activated carbon filter device connected in sequence, the evaporation device being connected to the wastewater input pipeline, the evaporation device comprising a wastewater MVR evaporator; The wastewater enters the wastewater MVR evaporator for evaporation and separation to obtain evaporated condensed water and evaporator concentrate; The COD molecular sieve filter comprises a regeneration device, a filter tank and a filter material located in the filter tank, and the evaporated condensed water enters the filter tank for COD filtration to obtain filtered distilled water; The regeneration device cleans the filter material in the filter tank to obtain the filter cleaning liquid; The activated carbon filtration device includes a plurality of multi-stage activated carbon adsorbers, which perform indiscriminate adsorption and filtration on the filtered distilled water and then discharge it; It also includes a concentrated liquid collecting device, which is connected to the evaporator and the COD molecular sieve filter to receive the evaporator concentrated liquid and the filter cleaning liquid; The filter material in the filter tank includes a molecular sieve, which includes an organic high-molecular copolymer mainly composed of a high-molecular organic material, wherein the high-molecular organic material includes styrene and divinylbenzene, and the specific surface area of ​​the molecular sieve material is 450-600m 2 / g; The regeneration device includes a cleaning liquid tank and an agitator located in the cleaning liquid tank. The cleaning liquid tank is a double-layer tank-in-tank, including an outer tank and an inner tank. The outer tank is an acidic regeneration liquid, and the inner tank is an alkaline regeneration liquid. The inner tank and the outer tank are equipped with independent liquid level switches and water replenishment ports to control the liquid levels of their respective regeneration liquids.

2. A biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: A pretreatment device is arranged between the evaporation device and the wastewater input pipeline. The pretreatment device comprises a prefilter and a buffer device. The inlet of the buffer device is connected to the pretreatment device and the COD molecular sieve filter, and the outlet of the buffer device is connected to the evaporation device.

3. A biopharmaceutical wastewater treatment equipment according to claim 2, characterized in that: The buffer device is also connected to a pH adjusting device, which includes a monitoring system, an acidic cleaning agent storage tank, and an alkaline cleaning agent storage tank; the monitoring system selects to transport cleaning agent from the acidic cleaning agent storage tank or the alkaline cleaning agent storage tank to the buffer device according to the pH value detection result of the wastewater in the buffer device to adjust the pH value of the wastewater entering the wastewater MVR evaporator.

4. The biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: The evaporation device also includes a defoaming agent storage tank connected to the wastewater MVR evaporator.

5. The biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: The wastewater MVR evaporator comprises a Roots pump, a heat exchanger, a waste liquid chamber and an evaporation chamber; water vapor in the waste liquid to be treated is extracted by the Roots pump and compressed, and the compressed high-temperature steam flows through the heat exchanger to the steam chamber, and the heat is transferred to the waste liquid to be treated in the waste liquid chamber, and the water in the waste liquid to be treated is heated to boil and evaporate continuously, and the high-temperature steam in the steam chamber is cooled through heat exchange to become evaporated condensed water after evaporation; the evaporator concentrate forms a circulating liquid in the heat exchanger; the evaporator concentrate is discharged to the concentrate collecting device after continuous circulation and concentration to reach the set concentration time.

6. The biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: The evaporation temperature of the wastewater MVR evaporator is 80°C-85°C, and the pH value required for evaporation is 7~9.

7. The biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: The activated carbon adsorber includes an activated carbon adsorption tank, a water distribution device, and a water collection device; the water distribution device is an upper water inlet and trumpet-type water distribution device, and the water collection device is a porous plate filter cap water collection structure; a pressure sampling interface is reserved on the outside of the activated carbon adsorption tank to facilitate the normal operation of the monitoring device; the filtration rate of the activated carbon adsorption tank is 10m / h, and the thickness of the activated carbon filter material layer is 1000mm.

8. A method for treating biopharmaceutical wastewater, characterized in that: The biopharmaceutical wastewater treatment equipment according to any one of claims 1 to 7 comprises the following steps: S1. Wastewater enters the evaporation device through the wastewater input pipe; S2, the wastewater enters the wastewater MVR evaporator for evaporation separation to obtain evaporated condensed water and evaporator concentrate, and the evaporator concentrate flows into the concentrate collection device; S3, the evaporated condensed water in step S2 flows into the COD molecular sieve filter; S4, the filter tank in the COD molecular sieve filter performs COD filtration on the evaporated condensed water in step S2 to obtain filtered distilled water; the regeneration device cleans the filter material in the filter tank to obtain filter cleaning liquid; the filter cleaning liquid flows into the concentrated liquid collection device; S5. The activated carbon adsorber in the activated carbon filtering device performs indiscriminate adsorption and filtration on the filtered distilled water and then discharges it.

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