Emergency treatment device for antibiotic intermediate pharmaceutical wastewater

Abstract

The utility model provides an emergency treatment device for antibiotic intermediate pharmaceutical wastewater, and relates to the technical field of water treatment. The utility model provides an emergency treatment device for antibiotic intermediate pharmaceutical wastewater, which comprises a homogeneous regulating tank, a sand filter device, a biochemical treatment tank, an MBR (Membrane Bioreactor) device, a pH (Potential of Hydrogen) regulating tank, an ultrafiltration device, a first-stage reverse osmosis device and a second-stage reverse osmosis device which are sequentially communicated along a water treatment direction. The device is simple in structure, simple and convenient to operate, high in automation degree, low in energy consumption and low in cost, can effectively purify antibiotic intermediate pharmaceutical wastewater and recycle antibiotic intermediates, is environment-friendly, and has both economic value and social value.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an emergency treatment device for antibiotic intermediate pharmaceutical waste water. Background Art

[0002] Wastewater from the production of antibiotics and their intermediates is primarily generated during the fermentation, extraction, and synthesis processes. The main pollutants in this wastewater are COD and ammonia nitrogen. The wastewater also contains high salt levels, a certain amount of sulfate, and small amounts of bioinhibitory substances. This wastewater has poor biodegradability, and pollutants are difficult to degrade, making treatment challenging. Existing treatment processes for antibiotics and their intermediates are lengthy and inadequate for emergency treatment of large volumes of water.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an emergency treatment device for antibiotic intermediate pharmaceutical wastewater, so as to solve the problem of treating antibiotic intermediate pharmaceutical wastewater.

[0005] In order to achieve the above objectives, the following technical solutions are adopted:

[0006] In the first aspect, the utility model provides an emergency treatment device for antibiotic intermediate pharmaceutical wastewater, which includes a homogenization regulating tank, a sand filtration device, a biochemical treatment tank, an MBR device, a pH regulating tank, an ultrafiltration device, a first-stage reverse osmosis device and a second-stage reverse osmosis device connected in sequence along the water treatment direction;

[0007] The homogenization regulating tank is used to homogenize the antibiotic intermediate pharmaceutical wastewater;

[0008] The sand filter device is used to remove suspended matter in wastewater;

[0009] The biochemical treatment pool is used to perform biochemical treatment on wastewater;

[0010] The MBR device is used to remove microorganisms and suspended solids in wastewater after biochemical treatment;

[0011] The pH adjustment tank is used to adjust the pH of the wastewater to 6-7;

[0012] The water outlet of the ultrafiltration device is connected to the water inlet of the first-stage reverse osmosis device, and the concentrate outlet of the ultrafiltration device is connected to the water inlet of the pH adjustment tank, so as to return the concentrate obtained by the ultrafiltration device to the pH adjustment tank;

[0013] The water inlet of the second-stage reverse osmosis device is connected to the water outlet of the first-stage reverse osmosis device, and the concentrate outlet is connected to the water inlet of the first-stage reverse osmosis device, which is used to return the concentrate obtained by the second-stage reverse osmosis device to the first-stage reverse osmosis device.

[0014] As a further technical solution, a stirrer is provided in the homogenizing regulating tank;

[0015] The agitator is used for homogenizing antibiotic intermediate pharmaceutical wastewater.

[0016] As a further technical solution, along the water treatment direction, the biochemical treatment tank includes an anaerobic tank, an anoxic tank and an aerobic tank that are connected in sequence.

[0017] As a further technical solution, the pH regulating tank is provided with a drug adding port for adding drugs into the pH regulating tank.

[0018] As a further technical solution, the backwash water discharge port of the ultrafiltration device is connected to the water inlet of the pH adjustment tank, so as to return the backwash water of the ultrafiltration device to the pH adjustment tank.

[0019] As a further technical solution, the membrane pore size of the first-stage reverse osmosis device is 1500-3000 Daltons.

[0020] As a further technical solution, the desalination rate of the second-stage reverse osmosis device is greater than 95%.

[0021] As a further technical solution, it also includes a concentrated water tank;

[0022] The water inlet of the concentrated water tank is communicated with the concentrated water outlet of the first-stage reverse osmosis device for collecting concentrated water.

[0023] As a further technical solution, it also includes a water production tank;

[0024] The water inlet of the water production tank is communicated with the water production outlet of the second-stage reverse osmosis device for collecting purified water.

[0025] As a further technical solution, the first-stage reverse osmosis device or the second-stage reverse osmosis device is a triple-type flat-plate membrane machine or a spiral membrane machine.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The emergency treatment device for antibiotic intermediate pharmaceutical wastewater provided by the utility model can realize the emergency and effective treatment of antibiotic intermediate pharmaceutical wastewater, and the concentrated liquid can be recycled as an effective resource.

[0028] 2. Through this device, the treatment effect of concentrating and reducing the water quality of antibiotic intermediate pharmaceutical wastewater by more than 3 times can be achieved.

[0029] 3. Through the two-stage reverse osmosis device in this device, the decolorization and effective concentration of antibiotic intermediate pharmaceutical wastewater can be achieved, and the pressure resistance level of the pump can be effectively reduced, energy consumption can be reduced, the service life of the membrane product can be extended, and the replacement cost can be reduced, which has economic value.

[0030] 4. The pH of the wastewater treated by the MBR device is adjusted to 6-7 through the pH adjustment tank in this device, which can achieve the best removal effect of ammonia nitrogen.

[0031] 5. Through this device, wastewater treatment and wastewater resource utilization can be effectively realized. At the same time, the produced water meets the discharge standards, is environmentally friendly, and has both economic and social value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a diagram of the device provided in Example 1 of the present utility model;

[0034] Figure 2 This is a diagram of the device provided for Example 2 of the present utility model.

[0035] Icons: 1-Homogeneous regulating tank; 2-Sand filtration device; 3-Biochemical treatment tank; 31-Anaerobic tank; 32-Anoxic tank; 33-Aerobic tank; 4-MBR device; 5-pH regulating tank; 6-Ultrafiltration device; 7-First stage reverse osmosis device; 8-Second stage reverse osmosis device; 9-Concentrated water tank; 10-Production water tank. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention will be described in detail with reference to the embodiments and examples. However, those skilled in the art will understand that the following embodiments and examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0037] In the first aspect, the utility model provides an emergency treatment device for antibiotic intermediate pharmaceutical wastewater, which includes, along the water treatment direction, a homogenization regulating tank 1, a sand filtration device 2, a biochemical treatment tank 3, an MBR device 4, a pH regulating tank 5, an ultrafiltration device 6, a first-stage reverse osmosis device 7, and a second-stage reverse osmosis device 8, which are connected in sequence;

[0038] The homogenization regulating tank 1 is used to homogenize the antibiotic intermediate pharmaceutical wastewater;

[0039] The sand filter device 2 is used to remove suspended matter and large particles or precipitated crystals in the wastewater;

[0040] The biochemical treatment pool 3 is used to perform biochemical treatment on wastewater;

[0041] The MBR device 4 is used to remove microorganisms and suspended solids in the wastewater after biochemical treatment;

[0042] The pH adjustment tank 5 is used to adjust the pH of the wastewater to 6-7, preferably 6.5, to remove ammonia nitrogen in the produced water of the MBR device 4;

[0043] The water outlet of the ultrafiltration device 6 is connected to the water inlet of the first-stage reverse osmosis device 7, and the concentrate outlet of the ultrafiltration device 6 is connected to the water inlet of the pH adjustment tank 5, so as to return the concentrate obtained by the ultrafiltration device 6 to the pH adjustment tank 5; the ultrafiltration device is used to further remove trace suspended matter and particulate matter in the produced water of the MBR device 4 and the sediment produced after the pH adjustment tank 5 is adjusted, so as to meet the water inlet requirements of the reverse osmosis device;

[0044] The water inlet of the second-stage reverse osmosis device 8 is connected to the water outlet of the first-stage reverse osmosis device 7, and the concentrate outlet is connected to the water inlet of the first-stage reverse osmosis device 7, so as to return the concentrate obtained by the second-stage reverse osmosis device 8 to the first-stage reverse osmosis device 7; wherein, the first-stage reverse osmosis device 7 is used to recover antibiotic intermediates in the wastewater, and the second-stage reverse osmosis device 8 is used to purify the wastewater to obtain purified water.

[0045] The emergency treatment device for antibiotic intermediate pharmaceutical wastewater provided by the utility model has a simple structure, easy operation, high degree of automation, low energy consumption, and low cost. It can effectively purify antibiotic intermediate pharmaceutical wastewater and recover antibiotic intermediates, is environmentally friendly, and has both economic and social value.

[0046] In some optional embodiments, a stirrer is provided in the homogenization regulating tank 1;

[0047] The agitator is used for homogenizing antibiotic intermediate pharmaceutical wastewater.

[0048] Homogenization treatment can reduce the fluctuation of wastewater quality, which is beneficial to the subsequent treatment of wastewater.

[0049] In some optional embodiments, along the water treatment direction, the biochemical treatment tank 3 includes an anaerobic tank 31, an anoxic tank 32 and an aerobic tank 33 that are connected in sequence.

[0050] The present invention does not impose any specific restrictions on biochemical treatment, and any biochemical treatment tank well known to those skilled in the art may be used to reduce the content of organic matter, suspended matter, nitrogen, etc. in the wastewater.

[0051] In some optional embodiments, the pH regulating tank 5 is provided with a drug adding port for adding drugs into the pH regulating tank 5. The drugs may be, for example, hydrochloric acid, sulfuric acid or sodium hydroxide.

[0052] The charge balance in the wastewater is adjusted by the pH adjustment tank 5, which helps the ammonium ions in the wastewater to be converted into ammonia gas and escape.

[0053] It should be noted that after the pH is adjusted in the pH adjustment tank 5 , precipitation may be generated in the tank, and it is preferred to take the clear liquid as the influent of the ultrafiltration device 6 .

[0054] In some optional embodiments, the backwash water discharge port of the ultrafiltration device 6 is connected to the water inlet of the pH adjustment tank 5 to return the backwash water of the ultrafiltration device 6 to the pH adjustment tank 5.

[0055] In some optional embodiments, the membrane pore size of the first-stage reverse osmosis device 7 may be, for example, but not limited to, 1500 Daltons, 2000 Daltons, 2500 Daltons or 3000 Daltons.

[0056] In some optional embodiments, the salt rejection rate of the second-stage reverse osmosis device 8 is greater than 95%.

[0057] In some optional embodiments, a concentrated water tank 9 is further included;

[0058] The water inlet of the concentrated water tank 9 is connected to the concentrated water outlet of the first-stage reverse osmosis device 7 for collecting concentrated water.

[0059] In some optional embodiments, a water production tank 10 is further included;

[0060] The water inlet of the water production tank 10 is connected to the water production port of the second-stage reverse osmosis device 8 for collecting purified water.

[0061] In some optional embodiments, the first-stage reverse osmosis device 7 or the second-stage reverse osmosis device 8 is a triple-type flat-plate membrane machine or a spiral membrane machine.

[0062] The present invention is further described below by means of specific examples and comparative examples. However, it should be understood that these examples are merely provided for more detailed description and should not be construed as limiting the present invention in any form.

[0063] Example 1

[0064] An emergency treatment device for antibiotic intermediate pharmaceutical wastewater, such as Figure 1 As shown, along the water treatment direction, it includes a homogenization regulating tank 1, a sand filtration device 2, a biochemical treatment tank 3, an MBR device 4, a pH regulating tank 5, an ultrafiltration device 6, a first-stage reverse osmosis device 7 and a second-stage reverse osmosis device 8 which are connected in sequence;

[0065] The homogenization regulating tank 1 is used to homogenize the antibiotic intermediate pharmaceutical wastewater;

[0066] The sand filter device 2 is used to remove suspended matter and large particles or precipitated crystals in the wastewater;

[0067] The biochemical treatment pool 3 is used to perform biochemical treatment on wastewater;

[0068] The MBR device 4 is used to remove microorganisms and suspended solids in the wastewater after biochemical treatment;

[0069] The pH regulating tank 5 is provided with a drug adding port for adding drugs into the pH regulating tank 5 to adjust the pH of the wastewater to 6-7;

[0070] The water outlet of the ultrafiltration device 6 is connected to the water inlet of the first-stage reverse osmosis device 7, and the concentrate outlet of the ultrafiltration device 6 is connected to the water inlet of the pH adjustment tank 5, so as to return the concentrate obtained by the ultrafiltration device 6 to the pH adjustment tank 5;

[0071] The water inlet of the second-stage reverse osmosis device 8 is connected to the water outlet of the first-stage reverse osmosis device 7, and the concentrate outlet is connected to the water inlet of the first-stage reverse osmosis device 7, so as to return the concentrate obtained by the second-stage reverse osmosis device 8 to the first-stage reverse osmosis device 7.

[0072] The membrane pore size of the first-stage reverse osmosis device 7 is, for example, 1500-3000 Daltons.

[0073] The desalination rate of the second-stage reverse osmosis device 8 is greater than 95%.

[0074] The first-stage reverse osmosis device 7 and the second-stage reverse osmosis device 8 are triple-type flat-plate membrane machines.

[0075] Example 2

[0076] An emergency treatment device for antibiotic intermediate pharmaceutical wastewater, such as Figure 2As shown, along the water treatment direction, it includes a homogenization regulating tank 1, a sand filtration device 2, a biochemical treatment tank 3, an MBR device 4, a pH regulating tank 5, an ultrafiltration device 6, a first-stage reverse osmosis device 7, a second-stage reverse osmosis device 8 and a water production tank 10 which are connected in sequence;

[0077] The homogenizing regulating tank 1 is used to homogenize the antibiotic intermediate pharmaceutical wastewater, and a stirrer is provided in the homogenizing regulating tank 1;

[0078] The sand filter device 2 is used to remove suspended matter and large particles or precipitated crystals in the wastewater;

[0079] The biochemical treatment pool 3 is used to perform biochemical treatment on the wastewater. Along the water treatment direction, the biochemical treatment pool 3 includes an anaerobic pool 31, an anoxic pool 32 and an aerobic pool 33 which are connected in sequence;

[0080] The MBR device 4 is used to remove microorganisms and suspended solids in the wastewater after biochemical treatment;

[0081] The pH regulating tank 5 is used to adjust the pH of the wastewater to 6.5. The pH regulating tank 5 is provided with a dosing port for adding drugs into the pH regulating tank 5;

[0082] The water outlet of the ultrafiltration device 6 is connected to the water inlet of the first-stage reverse osmosis device 7, and the concentrate outlet of the ultrafiltration device 6 is connected to the water inlet of the pH adjustment tank 5, so as to return the concentrate obtained by the ultrafiltration device 6 to the pH adjustment tank 5; the backwash water discharge outlet of the ultrafiltration device 6 is connected to the water inlet of the pH adjustment tank 5, so as to return the backwash water of the ultrafiltration device 6 to the pH adjustment tank 5;

[0083] The water inlet of the second-stage reverse osmosis device 8 is connected to the water outlet of the first-stage reverse osmosis device 7, and the concentrate outlet is connected to the water inlet of the first-stage reverse osmosis device 7, so as to return the concentrate obtained by the second-stage reverse osmosis device 8 to the first-stage reverse osmosis device 7; wherein the first-stage reverse osmosis device 7 is used to recover antibiotic intermediates in the wastewater, and the second-stage reverse osmosis device 8 is used to purify the wastewater to obtain purified water;

[0084] The membrane pore size of the first-stage reverse osmosis device 7 is 2000 Daltons;

[0085] The desalination rate of the second-stage reverse osmosis device 8 is greater than 95%;

[0086] The first-stage reverse osmosis device 7 and the second-stage reverse osmosis device 8 are wound membrane machines;

[0087] The water inlet of the water production tank 10 is connected to the water production port of the second-stage reverse osmosis device 8 for collecting purified water;

[0088] It also includes a concentrated water tank 9, the water inlet of which is connected to the concentrated water outlet of the first-stage reverse osmosis device 7 for collecting concentrated water.

[0089] Comparative Example 1

[0090] The difference from Example 2 is that the pH adjustment tank 5 is missing.

[0091] Test Example 1

[0092] The apparatus of Example 2 was used to treat antibiotic intermediate pharmaceutical wastewater (testing revealed that the antibiotic intermediate pharmaceutical wastewater contained sulfonamides, sulfachloropyridazine sodium, sulfacetamide sodium, p-aminobenzenesulfonic acid, sodium p-aminobenzenesulfonate, sodium sulfate, and ammonium sulfate). The recovery rate for the first-stage reverse osmosis unit was 50%, while the recovery rate for the second-stage reverse osmosis unit was 70%. The water quality of the MBR unit's produced water, the produced water tank, and the concentrated water tank was tested, and the results are shown in Table 1. Furthermore, testing revealed that the MBR unit's produced water primarily contained p-aminobenzenesulfonic acid, sodium p-aminobenzenesulfonate, sodium sulfate, and ammonium sulfate.

[0093] Table 1

[0094]

[0095] Note: TP is total phosphorus content; 70% produced water refers to the mixed produced water when the recovery rate of the reverse osmosis device is 70%; the retention rate refers to the total retention rate of the ultrafiltration and reverse osmosis devices.

[0096] The reverse osmosis membrane device has a good interception effect on various components in the MBR effluent sample. The operating pressure is 20-34 bar, the average flux is 10.04 LMH, the desalination rate is 95.79%, the COD interception rate is 96.76%, the NH3-N interception rate is 88.14%, the TP interception rate is 99.64%, and the Ca 2+ The rejection rate was 98.28%. A fouling test was conducted on 70% concentrated water. The results showed that after 8 hours of continuous operation, the reverse osmosis membrane had no obvious fouling and minimal damage to the membrane. The overall experiment was relatively successful. After reverse osmosis treatment, it can basically meet the piped discharge standards.

[0097] In addition, the same process parameters as in Example 2 were set, and the device of Comparative Example 1 was used to treat the produced water of the same batch of MBR devices. The results showed that the device had an NH3-N retention rate of 56.05%.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An emergency treatment device for antibiotic intermediate pharmaceutical wastewater, characterized in that: Along the water treatment direction, it includes a homogenization regulating tank (1), a sand filtration device (2), a biochemical treatment tank (3), an MBR device (4), a pH regulating tank (5), an ultrafiltration device (6), a first-stage reverse osmosis device (7) and a second-stage reverse osmosis device (8) which are connected in sequence; The homogenization regulating tank (1) is used for homogenizing the antibiotic intermediate pharmaceutical wastewater; The sand filter device (2) is used to remove suspended matter in wastewater; The biochemical treatment pool (3) is used to perform biochemical treatment on wastewater; The MBR device (4) is used to remove microorganisms and suspended solids in wastewater after biochemical treatment; The pH adjustment tank (5) is used to adjust the pH of the wastewater to 6-7; The water outlet of the ultrafiltration device (6) is connected to the water inlet of the first-stage reverse osmosis device (7), and the concentrated water outlet of the ultrafiltration device (6) is connected to the water inlet of the pH adjustment tank (5), so as to return the concentrated water obtained by the ultrafiltration device (6) to the pH adjustment tank (5); The water inlet of the second-stage reverse osmosis device (8) is connected to the water outlet of the first-stage reverse osmosis device (7), and the concentrated water outlet is connected to the water inlet of the first-stage reverse osmosis device (7), so as to return the concentrated water obtained by the second-stage reverse osmosis device (8) to the first-stage reverse osmosis device (7).

2. The emergency treatment device according to claim 1, characterized in that: The homogenizing regulating tank (1) is provided with an agitator; The agitator is used for homogenizing antibiotic intermediate pharmaceutical wastewater.

3. The emergency treatment device according to claim 1, characterized in that: Along the water treatment direction, the biochemical treatment tank (3) includes an anaerobic tank (31), an anoxic tank (32) and an aerobic tank (33) which are connected in sequence.

4. The emergency treatment device according to claim 1, characterized in that: The pH regulating tank (5) is provided with a drug adding port for adding drugs into the pH regulating tank (5).

5. The emergency treatment device according to claim 1, characterized in that: The backwash water discharge port of the ultrafiltration device (6) is connected to the water inlet of the pH regulating tank (5) and is used to return the backwash water of the ultrafiltration device (6) to the pH regulating tank (5).

6. The emergency treatment device according to claim 1, characterized in that: The membrane pore size of the first-stage reverse osmosis device (7) is 1500-3000 Daltons.

7. The emergency treatment device according to claim 1, characterized in that: The desalination rate of the second-stage reverse osmosis device (8) is greater than 95%.

8. The emergency treatment device according to claim 1, characterized in that: Also includes a concentrated water tank (9); The water inlet of the concentrated water tank (9) is communicated with the concentrated water outlet of the first-stage reverse osmosis device (7) for collecting concentrated water.

9. The emergency treatment device according to claim 1, characterized in that: Also included is a water production tank (10); The water inlet of the water production tank (10) is connected to the water production port of the second-stage reverse osmosis device (8) for collecting purified water.

10. The emergency treatment device according to claim 1, characterized in that: The first-stage reverse osmosis device (7) or the second-stage reverse osmosis device (8) is a triple-type flat-plate membrane machine or a roll-type membrane machine.

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