Biopharmaceutical wastewater treatment equipment and treatment method

Abstract

The biological pharmaceutical wastewater treatment equipment is connected with a wastewater input pipeline and comprises an evaporation device, a concentrated solution collecting device, a COD molecular sieve filter and an activated carbon filtering device which are sequentially connected, and the evaporation device comprises a wastewater MVR evaporator; the COD molecular sieve filter comprises a regeneration device, a filtering tank and a filtering material positioned in the filtering tank, the active carbon filtering device comprises a plurality of multi-stage active carbon adsorbers, and the active carbon adsorbers are used for carrying out indifference adsorption filtering on filtered distilled water and then discharging the filtered distilled water. The invention develops a brand-new treatment method for biological pharmaceutical wastewater, which breaks through the traditional process, the existing biological pharmaceutical wastewater treatment technology mainly adopts a biochemical treatment process, and the invention adopts evaporation, molecular sieve COD (Chemical Oxygen Demand) filtration and an activated carbon filter to form a brand-new full-physical wastewater treatment process.

Description

Technical Field

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

[0002] In recent years, China's biopharmaceuticals have developed rapidly, but also brought severe environmental problems. Pharmaceutical industrial wastewater refers to wastewater discharged from factories that manufacture antibiotics, antimicrobials, antisera, and organic and inorganic medicines. The amount and quality of wastewater vary according to the type of medicine produced, but the wastewater discharged from distillation and bottle washing is basically the same. In addition to animal wastewater mainly composed of animal organs and plant wastewater mainly composed of herbs, production wastewater of antibiotics, antisera, etc. generally contains toxic substances such as fluorine, cyanide, phenol, cresol and mercury compounds, as well as a large amount of biochemical oxygen demand (BOD), chemical oxygen demand (COD) and colloidal substances. Pharmaceutical wastewater cannot be directly treated biochemically because of its high content of difficult-to-degrade organic matter, salt and ammonia nitrogen. It must be removed in the early stage. In addition, the concentration of ammonia nitrogen is difficult to control and is very unstable. If the ammonia nitrogen concentration is not provided accurately, there will be a large deviation in the design of the structure load, which will seriously affect the investment in civil engineering and equipment. At present, for this type of wastewater, most of the current domestic and foreign methods use the physicochemical pretreatment-anaerobic-aerobic biological treatment process. The core of this process revolves around the biochemical process section. After pretreatment such as using an evaporator to remove the salt in the wastewater, it enters the biochemical system. The starting point of this process is to reduce the organic matter concentration in the wastewater as much as possible through pretreatment and anaerobic treatment, while improving the biodegradability of the wastewater, so that the subsequent aerobic biological treatment can operate stably. However, these processes have the disadvantages of low removal rates of organic matter and ammonia nitrogen, large civil engineering investment and high energy consumption, as well as numerous process equipment and lengthy processes.

[0003] Therefore, a biopharmaceutical wastewater treatment equipment and treatment method is designed. The biopharmaceutical wastewater is treated by combining a wastewater MVR evaporator, a COD molecular sieve filter and an activated carbon filter. The treatment method uses an evaporator to remove salt and high-boiling organic matter, and the remaining low-boiling organic matter is removed by a COD molecular sieve filter. Finally, an activated carbon filter is set as a water outlet guarantee measure. It can improve the treatment effect while improving the 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 purpose of the present invention is to provide a biopharmaceutical wastewater treatment device and a treatment method, which improves the filtration accuracy and filtration efficiency by combining a wastewater MVR evaporator, a COD molecular sieve filter and an activated carbon filter.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a biopharmaceutical wastewater treatment equipment, connected to the wastewater input pipeline, including 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; the wastewater enters the wastewater MVR evaporator for evaporation and separation to obtain evaporated condensed water and evaporator concentrate;

[0006] The COD molecular sieve filter comprises a regeneration device, a filter tank and a filter material in the filter tank. 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 a filter cleaning liquid.

[0007] 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;

[0008] 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.

[0009] Preferably, a pretreatment device is provided 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.

[0010] Preferably, 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.

[0011] Preferably, the buffer device includes a wastewater collection tank and an agitator located in the wastewater collection tank, and the agitator stirs the wastewater from different devices in the wastewater collection tank and the cleaning agent delivered by the pH adjustment device to achieve the purpose of uniform quality and quantity treatment and pH value adjustment.

[0012] In the above, the inlet of the buffer device is connected to the pretreatment device to receive wastewater from the wastewater input pipe; the inlet of the buffer device is connected to the COD molecular sieve filter to receive wastewater treated by the evaporation device and the COD molecular sieve filter, so as to circulate the wastewater that does not meet the standards.

[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 an acid cleaning agent storage tank and an alkali supply pump connected to an 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 sensor detection results and human input instructions, and transmit a signal to the control valve according to the sensor detection results or the human input instructions. The control valve starts the acid supply pump or the alkali supply pump according to the signal.

[0014] Preferably, the monitoring system also includes an automatic medicine replenishing device, the number of which is two, and the two automatic medicine replenishing devices are respectively connected to the acid cleaning agent storage tank and the alkaline cleaning agent storage tank, and the automatic medicine replenishing device includes an acid- and alkali-resistant pressure analog liquid level gauge and a medicine replenishing pump, and medicine replenishment is performed through the medicine replenishing pump according to the detection result of the pressure analog liquid level gauge.

[0015] Preferably, the evaporation device further comprises a defoaming agent storage tank connected to the wastewater MVR evaporator.

[0016] Preferably, 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, transferring heat to the waste liquid to be treated in the waste liquid chamber, and 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 evaporated condensed water after evaporation; the evaporator concentrate forms a circulating liquid in the heat exchanger; the evaporator concentrate is discharged to the concentrate collection device after continuous circulation and concentration to reach the set concentration time.

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

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

[0019] Preferably, the filter material in the filter tank includes a molecular sieve, and the molecular sieve includes an organic polymer copolymer mainly composed of a polymer organic material, and the polymer organic material includes styrene and divinylbenzene. The specific surface area of ​​the molecular sieve material is 450 to 600 m 2 / g.

[0020] Preferably, the regeneration device includes a cleaning liquid tank and an agitator located in the cleaning liquid tank, and the cleaning liquid tank includes 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.

[0021] Preferably, the activated carbon adsorber comprises an activated carbon adsorption tank, a water distribution device, and a water collection device. The water distribution device is a top water inlet and trumpet-type water distribution device, and the water collection device is a porous plate water filter cap water collection structure; a pressure sampling interface is left outside the activated carbon adsorption tank to facilitate the normal operation of the monitoring device. The activated carbon filter tank has a filtration rate of 10m / h, and the thickness of the activated carbon filter layer is 1000mm.

[0022] Preferably, a tail gas treatment device is also provided, which 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 adsorb it through the tail gas treatment device before discharging it into the air.

[0023] Preferably, the outlet of the activated carbon filter device is also provided with a clear liquid buffer tank and a wastewater neutralization tank. The inlet of the wastewater neutralization tank is connected to the clear liquid buffer tank. The clear liquid buffer tank is used to receive clear liquid after filtration from the activated carbon filter device. The outlet of the clear liquid buffer tank is connected to the inlet of the COD molecular sieve filter. The clear liquid buffer tank is provided with a first detection device. If the first detection device detects that the clear liquid in the clear liquid buffer tank meets the standard, the clear liquid is moved to the wastewater neutralization tank. If it does not meet the standard, the clear liquid is moved to 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 up in the factory. The wastewater neutralization tank includes a storage tank, a neutralization agitator, and a second detection device. The neutralization agitator stirs the wastewater from the above-mentioned different sewage pools in the storage tank. If the second detection device detects that the wastewater in the storage tank meets the standards, the wastewater is moved to the discharge port for discharge. If it does not meet the standards, the wastewater is moved to the pretreatment device for re-filtration.

[0025] The present application also claims a method for treating biopharmaceutical wastewater, using the biopharmaceutical wastewater treatment equipment described above, comprising the following steps:

[0026] S1. Wastewater enters the evaporation device through the wastewater input pipe;

[0027] 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;

[0028] S3, the evaporated condensed water in step S2 flows into the COD molecular sieve filter;

[0029] 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;

[0030] 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.

[0031] In the above, before step S1, the wastewater needs to be pre-filtered by a pretreatment device, and the pH value of the wastewater is adjusted by detecting the pH value of the wastewater in the buffer device to start the pH adjustment device to ensure that the pH value of the wastewater entering the wastewater MVR evaporator reaches the required standard, thereby reducing the risk of corrosion and scaling of the evaporator.

[0032] In the above, the filtered distilled water in step S4 needs to be tested. If the filtered distilled water in step S4 does not meet the set standard, the above steps S2 to 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, before discharge in step S5, the clear liquid needs to be discharged into the clear liquid buffer tank, and 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 to the wastewater neutralization tank; if it does not meet the standard, it is moved to 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 the traditional process. The existing biopharmaceutical wastewater treatment technology is mainly based on biochemical treatment process. The present invention combines evaporation, molecular sieve COD filtration, and activated carbon filter into a new all-physical wastewater treatment process.

[0036] 2. The process flow of the present invention is simple, the operation is fully automated, and the user interface is friendly. Compared with the existing biochemical process, the investment in labor costs is greatly reduced; the present invention can realize standardized production and modular introduction, reduce production costs and user investment, and does not require repeated construction, and can be relocated at any time following the production line.

[0037] 3. The present invention can realize a new model, open up the circular economy market, and expand the leasing recycling business. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, some of the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A process flow chart of an embodiment.

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

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

[0042] Figure 4 Schematic diagram of the structure of a cleaning liquid tank in an embodiment.

[0043] Figure 5 It is a schematic diagram of the structure of a wastewater neutralization tank in one 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. Concentrate 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 agitator; 16. First detection device;

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

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

[0047] 41. Activated carbon adsorber;

[0048] 71. Pre-filter; 72. Buffer device;

[0049] 81. Acid cleaning agent storage tank; 82. Alkaline cleaning agent storage tank. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Embodiment 1

[0052] like Figure 1-Figure 5 As shown, a biopharmaceutical wastewater treatment device is connected to a 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, wherein the evaporation device 2 is connected to the wastewater input pipeline 1, and the evaporation device 2 includes a wastewater MVR evaporator 21; wastewater enters the wastewater MVR evaporator 21 for evaporation and separation to obtain evaporated condensed water and evaporator concentrate;

[0053] The COD molecular sieve filter 3 comprises a regeneration device 31, a filter tank 32 and a filter material in the filter tank 32. The evaporated condensed water enters the filter tank 32 for COD filtration to obtain filtered distilled water. The regeneration device 31 cleans the filter material in the filter tank 32 to obtain a filter cleaning liquid.

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

[0055] It also includes a concentrated liquid collecting device 6, which is connected to the evaporator 2 and the COD molecular sieve filter 3 to receive the evaporator concentrated liquid and the filter cleaning liquid.

[0056] Preferably, a pretreatment device 7 is arranged between the evaporation device 2 and the wastewater input pipeline 1, and the pretreatment device 7 includes a prefilter 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, the buffer device 72 is also connected to a pH adjusting device 8, and the pH adjusting 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 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 pH value detection result 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 wastewater collection tank and an agitator 34 located in the wastewater collection tank, and the agitator 34 stirs the wastewater from different devices in the wastewater collection tank and the cleaning agent delivered by the pH adjustment device 8 to achieve the purpose of uniform quality and quantity treatment and pH value adjustment.

[0059] In the above, the inlet of the buffer device 72 is connected to the pretreatment device 7 to receive wastewater from the wastewater input pipe 1; the inlet of the buffer device 72 is connected to the COD molecular sieve filter 3 to receive the wastewater treated by the evaporation device 2 and the COD molecular sieve filter 3, so as to circulate the wastewater that does not meet the standards.

[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 acid 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 wastewater MVR evaporator 21 to detect the pH value of the wastewater in the wastewater MVR evaporator 21; the control system is used to receive sensor detection results and human input instructions, and transmit a signal to the control valve according to the sensor detection results or the human input instructions. The control valve starts the acid supply pump or the alkali supply pump according to the signal.

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

[0062] Preferably, the evaporation device 2 further comprises a defoaming agent storage tank 1422 connected to the wastewater MVR evaporator 21 .

[0063] Preferably, the wastewater 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, 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, while the high-temperature steam in the steam chamber is cooled by 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 6 after continuous circulation and concentration to reach the set concentration time.

[0064] In the above, after evaporation treatment, the steam in the wastewater MVR evaporator 21 is separated from the non-volatile organic and inorganic substances, and the non-volatile organic and inorganic substances are used as evaporator concentrate to form a circulating liquid in the heat exchanger until it is discharged to the concentrate collection device 6; the steam is cooled and liquefied into evaporated condensed water, and the evaporated condensed water enters the filter 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 filter material in the filter tank 32 includes a molecular sieve, and the molecular sieve includes an organic polymer copolymer mainly composed of a polymer organic material, and the polymer organic material includes styrene and divinylbenzene. The specific surface area of ​​the molecular sieve material is 450 to 600 m 2 / g.

[0067] Preferably, the regeneration device 31 includes a cleaning liquid tank 33 and an agitator 34 located in the cleaning liquid tank 33. The cleaning liquid tank 33 includes a double-layer tank-in-tank, including an outer tank 35 and an inner tank 36. The outer tank 35 is an acidic regeneration liquid, and the inner tank 36 is 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 comprises an activated carbon adsorption tank, a water distribution device, and a water collection device. The water distribution device is a top water inlet and trumpet-type water distribution device, and the water collection device is a porous plate water filter cap water collection structure; a pressure sampling interface is left outside the activated carbon adsorption tank to facilitate the normal operation of the monitoring device. The activated carbon filter tank 32 has a filtration rate of 10m / h, and the thickness of the activated carbon filter material layer is 1000mm.

[0069] Preferably, a tail gas treatment device 5 is also provided, and 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 in the wastewater treatment process and adsorb it through the tail gas treatment device 5 before discharging it into the air.

[0070] Preferably, the outlet of the activated carbon filter device 4 is also provided with a clear liquid buffer tank 9 and a wastewater neutralization tank 10, and the inlet of the wastewater neutralization tank 10 is connected to the clear liquid buffer tank 9, and the clear liquid buffer tank 9 is used to receive the clear liquid after filtration from the activated carbon filter device 4, and the outlet of the clear liquid buffer tank 9 is connected to the inlet of the COD molecular sieve filter 3, and the clear liquid buffer tank 9 is provided with a first detection device 16. If the first detection device 16 detects that the clear liquid in the clear liquid buffer tank 9 meets the standard, the clear liquid is moved to the wastewater neutralization tank 10; if it does not meet the standard, it is moved to 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, the rainwater collection pool 12, and the domestic sewage pool 13 arranged in the factory. The wastewater neutralization tank 10 includes a storage tank 14, a neutralization agitator 15, and a second detection device. The neutralization agitator 15 stirs the wastewater from the above-mentioned different sewage pools in the storage tank 14. If the second detection device detects that the wastewater in the storage tank 14 meets the standards, the wastewater is moved to the discharge port for discharge. If it does not meet the standards, it is moved to the pretreatment device 7 for re-filtration.

[0072] Embodiment 2

[0073] This embodiment is implemented on the basis of the above-mentioned embodiment 1, and the similarities with the above-mentioned embodiment are not repeated here.

[0074] This embodiment relates to a method for treating biopharmaceutical wastewater, using the biopharmaceutical wastewater treatment equipment described above, including the following steps:

[0075] S1, wastewater enters evaporation device 2 through wastewater input pipe 1;

[0076] S2, the wastewater enters the wastewater MVR evaporator 21 for evaporation and separation to obtain evaporated condensed water and evaporator concentrate, and the evaporator concentrate flows into the concentrate collecting device 6;

[0077] S3, the evaporated condensed water in step S2 flows into the COD molecular sieve filter 3;

[0078] S4, the filter tank 32 in the COD molecular sieve filter 3 performs COD filtration on the evaporated condensed water in step S2 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 concentrated liquid collecting device 6;

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

[0080] In the above, before step S1, the wastewater needs to be pre-filtered by the pretreatment device 7, and the pH value of the wastewater is adjusted by detecting the pH value of the wastewater in the buffer device 72 to start the pH adjustment device 8 to ensure that the pH value of the wastewater entering the wastewater MVR evaporator 21 meets the required standard, thereby reducing the risk of corrosion and scaling of the evaporator.

[0081] In the above, the filtered distilled water in step S4 needs to be tested. If the filtered distilled water in step S4 does not meet the set standard, the above steps S2 to 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 filter device 4.

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

[0083] Comparative Example 1

[0084] The wastewater treatment process used in this comparative example is MVR evaporator + UASB + anoxic + aerobic + MBR membrane + sludge dehydration, and 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 salt through MVR. Then the refractory organic matter in the water is degraded through the UASB anaerobic reactor and the anoxic aerobic combination process. Finally, the solid-liquid separation is carried out through the MBR membrane. The remaining sludge is dehydrated and disposed.

[0085] Wastewater with a COD concentration of 10000 mg / L was introduced into Example 1 and Comparative Example 1 respectively for wastewater treatment. The results after treatment 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 used in Example 1 has a higher treatment efficiency than that used in Comparative Example 1, and the wastewater treatment equipment occupies a smaller area, has a better wastewater treatment effect, and significantly reduces the effluent COD concentration.

[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 provided in this comparative example.

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

[0092] Table 2

[0093]

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

[0095] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 rather to 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; The device also comprises a concentrated liquid collecting device, which is connected with the evaporation device and the COD molecular sieve filter to receive the evaporator concentrated liquid and the filter cleaning liquid.

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 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 to 600 m 2 / g.

8. The biopharmaceutical wastewater treatment equipment according to claim 1, characterized in that: 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.

9. 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 filter tank is 10m / h, and the thickness of the activated carbon filter material layer is 1000mm.

10. A method for treating biopharmaceutical wastewater, characterized in that: The biopharmaceutical wastewater treatment equipment according to any one of claims 1 to 9 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.

Images