Hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separating system

Abstract

The utility model discloses a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separating system which comprises a raw water tank, a raw water pump, a sodium hypochlorite dosing mechanism, a prefilter, a nanofiltration system, a nanofiltration water producing tank, a backwashing pump and a dosing system, the pre-filter is connected with the nanofiltration system, the nanofiltration system is connected with the nanofiltration water producing tank, the nanofiltration water producing tank is connected with the backwashing pump, and the sodium hypochlorite dosing mechanism and the dosing system are both detection instruments. The hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system disclosed by the utility model can remove components in water, such as colloids, suspended solids, TDS (total dissolved solids), microorganisms, viruses, TOC (total organic carbon), hardness and the like covering multiple ranges, is combined with high-temperature reverse osmosis and EDI (electrodeionization) to form a pure water preparation system, has a wide prospect in the industries of pharmaceutical water, food, beverage and the like, and is suitable for popularization and application. The device is suitable for the medicine separation field.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow polyethersulfone nanofiltration membrane drinking water processing, in particular to a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system. Background Art

[0002] The hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system is a supporting equipment for hollow polyethersulfone nanofiltration membrane drinking water processing. Softeners and activated carbon are widely used in the pretreatment process of the existing purified water system in the pharmaceutical water system. The softener is used to reduce the hardness (calcium and magnesium ions) in the water to reduce the risk of RO membrane scaling in the subsequent system. The sodium ions of the resin in the softener replace the calcium and magnesium ions in the water during operation to reduce the hardness of the water. After a period of operation, the sodium ion adsorption is saturated and a large amount of salt is consumed for regeneration. In addition, a large amount of manual participation is required in the process of replacing salt, which generates a lot of extra physical labor for the operating technicians in the production workshop of the pharmaceutical factory; the consumption of regenerated salt is related to the size and production capacity of the softener in the system. It takes ~160g of salt to regenerate and recover 1L of softening resin;

[0003] Activated carbon filters are usually designed to remove heavy metals, oxidizing substances (such as residual chlorine) and organic matter from drinking water. Due to the porous surface area of ​​activated carbon itself, it is easy to accumulate microorganisms during operation and become a hotbed for microbial growth. Therefore, activated carbon filters need to be designed for online high-temperature pasteurization in pharmaceutical water. Industrial steam is consumed during pasteurization, and the price of industrial steam in my country is also high, usually ranging from 200 to 300 yuan / m depending on the region. 3 ;

[0004] Traditional multi-media filters are widely used in the front stage of pharmaceutical water preparation and pretreatment to remove suspended matter, colloids and other impurities in water; reduce the turbidity in water to ≤1NTU, SDI15≤5; but the filter is subject to the uneven distribution of the filter layer, resulting in frequent fluctuations in the effluent water quality. The instability affects the operation of the reverse osmosis membrane and EDI device of the back-end purification unit, affecting the service life of key components or shortening their cleaning cycle. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system.

[0005] In traditional pretreatment, multi-unit filters include multi-media filters, softeners and activated carbon filters. Each unit filter can only remove one or two impurity elements. In traditional pretreatment, multi-media and activated carbon filters use physical principles (filtration and van der Waals force) to remove impurities. Softeners use chemical means to perform equal ion exchange. The conductivity of the treated water itself will not change. For this reason, we propose a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system. Utility Model Content

[0006] Technical problems solved: In view of the shortcomings of the prior art, the utility model provides a hollow polyethersulfone nanofiltration membrane drinking water softening and drug liquid separation system, which can remove a wide range of water components such as colloids, suspended matter, TDS, microorganisms, viruses, TOC, hardness, etc., and is combined with high-temperature reverse osmosis and EDI to form a pure water preparation system, which has broad prospects in the pharmaceutical water and food and beverage industries. It is also suitable for the field of drug separation and can effectively solve the problems in the background technology.

[0007] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system, including a raw water tank, a raw water pump, a sodium hypochlorite dosing mechanism, a pre-filter, a nanofiltration system, a nanofiltration water production tank, a backwash pump and a dosing system, the raw water tank is connected to the raw water pump, the raw water pump is connected to the pre-filter, the pre-filter is connected to the nanofiltration system, the nanofiltration system is connected to the nanofiltration water production tank, and the nanofiltration water production tank is connected to the backwash pump, and the sodium hypochlorite dosing mechanism and the dosing system are both detection instruments.

[0008] Preferably, a water supply pipe is connected to the top of the raw water tank, a raw water supply mechanism is connected to the end of the water supply pipe, a first valve is provided on the water supply pipe, a first valve and a second valve are connected to the side of the raw water tank, and a third valve is connected between the raw water tank and the raw water pump.

[0009] Preferably, a second meter and a fourth valve are connected between the raw water pump and the pre-filter, and a third meter, a fifth valve, a sixth valve, a fifth meter, a fourth meter, a seventh valve and an eighth valve are connected between the pre-filter and the nanofiltration system.

[0010] Preferably, a ninth meter and a digital valve meter are connected to one side of the nanofiltration water production tank, a fifteenth valve is connected between the nanofiltration water production tank and the backwash pump, and a tenth meter, a sixteenth valve, a seventeenth valve, a sixth meter, a tenth valve, an eleventh valve, a ninth valve and a twelfth valve are sequentially connected to one side of the backwash pump and enter the nanofiltration water production tank at the other end.

[0011] Preferably, the top of the nanofiltration system is sequentially connected to a fourteenth valve, an eighteenth valve, a thirteenth valve, a seventh meter and an eighth meter.

[0012] Preferably, the dosing system includes conductivity, TOC and online microbial detectors, and the sodium hypochlorite dosing mechanism includes water inlet and water output flow detectors.

[0013] Beneficial effects: Compared with the prior art, the utility model provides a hollow polyethersulfone nanofiltration membrane drinking water softening and drug liquid separation system, which has the following beneficial effects: This hollow polyethersulfone nanofiltration membrane drinking water softening and drug liquid separation system can remove a wide range of water components such as colloids, suspended matter, TDS, microorganisms, viruses, TOC, hardness, etc., and is combined with high-temperature reverse osmosis and EDI to form a pure water preparation system, which has broad prospects in the pharmaceutical water and food and beverage industries, and is also suitable for the field of drug separation. The entire hollow polyethersulfone nanofiltration membrane drinking water softening and drug liquid separation system has a simple structure, is easy to operate, and has better results than traditional methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system.

[0015] Figure 2 It is a three-dimensional structural diagram of a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system of the utility model.

[0016] In the figure: 1, raw water tank; 2, raw water pump; 3, sodium hypochlorite dosing mechanism; 4, pre-filter; 5, nanofiltration system; 6, nanofiltration water production tank; 7, backwash pump; 8, dosing system; 9, raw water supply mechanism; 10, first valve; 11, water supply pipe; 12, first meter; 13, second valve; 14, third valve; 15, second meter; 16, fourth valve; 17, third meter; 18, fifth valve; 19, fifth meter; 20, first Four meters; 21, the seventh valve; 22, the digital valve meter; 23, the eighth valve; 24, the ninth meter; 25, the fifteenth valve; 26, the sixteenth valve; 27, the tenth meter; 28, the seventeenth valve; 29, the fourteenth valve; 30, the thirteenth valve; 31, the sixth meter; 32, the tenth valve; 33, the eleventh valve; 34, the twelfth valve; 35, the ninth valve; 36, the eighth meter; 37, the seventh meter; 38, the eighteenth valve; 39, the sixth valve. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 , 2 As shown, a hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system includes a raw water tank 1, a raw water pump 2, a sodium hypochlorite dosing mechanism 3, a prefilter 4, a nanofiltration system 5, a nanofiltration water production tank 6, a backwash pump 7 and a dosing system 8. The raw water tank 1 is connected to the raw water pump 2, the raw water pump 2 is connected to the prefilter 4, the prefilter 4 is connected to the nanofiltration system 5, the nanofiltration system 5 is connected to the nanofiltration water production tank 6, and the nanofiltration water production tank 6 is connected to the backwash pump 7. The sodium hypochlorite dosing mechanism 3 and the dosing system 8 are both detection instruments, which can remove a wide range of colloids, suspended solids, TDS, microorganisms, viruses, TOC, hardness and other water components. The combination with high-temperature reverse osmosis and EDI is a pure water preparation system, which has broad prospects in the pharmaceutical water and food and beverage industries, and is also suitable for the field of drug separation.

[0021] Furthermore, a water supply pipe 11 is connected to the top of the raw water tank 1, a raw water supply mechanism 9 is connected to the end of the water supply pipe 11, a first valve 10 is provided on the water supply pipe 11, a first valve 12 and a second valve 13 are connected to the side of the raw water tank 1, and a third valve 14 is connected between the raw water tank 1 and the raw water pump 2.

[0022] Furthermore, a second meter 15 and a fourth valve 16 are connected between the raw water pump 2 and the pre-filter 4 , and a third meter 17 , a fifth valve 18 , a sixth valve 39 , a fifth meter 19 , a fourth meter 20 , a seventh valve 21 and an eighth valve 23 are connected between the pre-filter 4 and the nanofiltration system 5 .

[0023] Furthermore, a ninth meter 24 and a digital valve meter 22 are connected to one side of the nanofiltration water production tank 6, a fifteenth valve 25 is connected between the nanofiltration water production tank 6 and the backwash pump 7, and a tenth meter 27, a sixteenth valve 26, a seventeenth valve 28, a sixth meter 31, a tenth valve 32, an eleventh valve 33, a ninth valve 35 and a twelfth valve 34 are sequentially connected to one side of the backwash pump 7, and enter the nanofiltration water production tank 6 at the other end.

[0024] Furthermore, the top of the nanofiltration system 5 is sequentially connected to a fourteenth valve 29 , an eighteenth valve 38 , a thirteenth valve 30 , a seventh meter 37 and an eighth meter 36 .

[0025] Furthermore, the dosing system 8 includes conductivity, TOC and online microbial detectors, and the sodium hypochlorite dosing mechanism 3 includes water inlet and water output flow detectors.

[0026] Working principle: The utility model includes a raw water tank 1, a raw water pump 2, a sodium hypochlorite dosing mechanism 3, a prefilter 4, a nanofiltration system 5, a nanofiltration water production tank 6, a backwash pump 7, a dosing system 8, a raw water supply mechanism 9, a first valve 10, a water supply pipe 11, a first meter 12, a second valve 13, a third valve 14, a second meter 15, a fourth valve 16, a third meter 17, a fifth valve 18, a sixth valve 39, a fifth meter 19, a fourth meter 20, a seventh valve 21, a digital valve meter 22, an eighth valve 23, a ninth meter 24, a fifteenth valve 25, and a sixteenth valve 2 6. The tenth meter 27, the seventeenth valve 28, the fourteenth valve 29, the thirteenth valve 30, the sixth meter 31, the tenth valve 32, the eleventh valve 33, the twelfth valve 34, the ninth valve 35, the eighth meter 36, the seventh meter 37, the eighteenth valve 38 and the sixth valve 39 can remove a wide range of water components such as colloids, suspended solids, TDS, microorganisms, viruses, TOC, hardness, etc., and the combination with high-temperature reverse osmosis and EDI is a pure water preparation system, which has broad prospects in the pharmaceutical water and food and beverage industries, and is also suitable for the field of drug separation.

[0027] Material separation and purification: Nanofiltration technology is used to separate low molecular weight substances (such as steroids, vitamins, antibiotics and amino acids) from other reactants for clarification and purification. For example, the recovery and concentration of VB12, as well as the concentration and purification of various antibiotics such as erythromycin and chlortetracycline. Protein separation: Nanofiltration membranes are widely used in the preparation and purification of proteins. They can efficiently separate target proteins and reduce the presence of impurities. By rationally selecting the pore size of the nanofiltration membrane and the separation conditions, the purpose of rapidly purifying the target protein from a complex mixed solution can be achieved.

[0028] Virus removal: Nanofiltration membranes can effectively remove microbial contaminants such as viruses from solutions, thereby reducing the risk of product contamination and improving product quality and safety.

[0029] Drug concentration: In the pharmaceutical industry, the produced drugs need to be concentrated to facilitate subsequent processing and use. Nanofiltration membranes can quickly concentrate low-concentration drug solutions, improving manufacturing efficiency while ensuring drug quality.

[0030] Water removal: In the process of drug production, water needs to be removed from the drug to ensure product quality and stability. Nanofiltration membrane technology can quickly and efficiently remove water from the solution, thereby reducing the water content of the product.

[0031] Fermentation broth concentration: Nanofiltration membrane elements are used for fermentation broth concentration, which has the advantages of no phase change, operation at room temperature, energy saving and reduced production costs. For example, using nanofiltration membrane to concentrate antibiotic fermentation filtrate to a smaller volume and then extracting it with an organic solvent can improve the production capacity of the extraction equipment and reduce the amount of solvent used.

[0032] Pre-filtration combined with nanofiltration system can prepare drinking water in one step

[0033] This process requires a raw water pump 2, a pre-filter 4, a nanofiltration system 5, a nanofiltration water production tank 6, a backwash pump 7, a fifth filter 19, a sixth filter 31, a fourth filter 20 and an online conductivity meter. It can replace traditional filtration to prepare higher-grade drinking water. Compared with reverse osmosis, it can retain nutritious ingredients in the water, such as K+, Cl-, Na+, and plasma. TDS can be reduced by 50-60%, and hardness (measured in CaCO3) can be treated to below 40 ppm, retaining some nutrients that are easily absorbed by the human body.

[0034] The pre-filtration + nanofiltration system includes operation, backwashing and CIP cleaning modes.

[0035] 1. In operation mode: raw water is replenished into raw water tank 1 through pneumatic angle seat valve 1, and is transported to pre-filter 4 through raw water pump 2. After pre-filtration, it enters nanofiltration system 5 for treatment, and then produced water flows into nanofiltration produced water tank 6, and concentrated water is directly discharged through thirteen valves. Among them, valves 3, 4, 6, 9, and 13 are opened, valve 13 manually adjusts the concentrated water discharge flow, and the other valves are closed. The pressure sensor (5th meter, 6th meter) is used to monitor the pressure during operation and alarm when the pressure is too high. The sampling valve (5th valve, 12th valve) is used for sampling of nanofiltration inlet and produced water. Unqualified produced water of nanofiltration is discharged through valve 11. In this process, the opening of the pneumatic angle seat valve (1st valve) is linked to the liquid level (1st meter) of the raw water tank, and valve 2 is used to empty the raw water tank. The sodium hypochlorite dosing mechanism 3 is in front of the raw water pump 2 to inhibit the growth of microorganisms. Pressure gauges (the 2nd gauge and the 3rd gauge) are set before and after the pre-filter 4, and the filter element is replaced according to the pressure difference.

[0036] 2. In backwash mode: valves (valve 15, valve 16, valve 17, valve 13, valve 14, valve 8) are opened, and the remaining valves are closed. At the same time, dosing system 8 adds sodium hypochlorite to the backwash pipeline.

[0037] 3. In CIP cleaning mode: connect the CIP trolley to the valves (valve 7, valve 10, valve 14) and clean the nanofiltration membrane in a cycle.

[0038] The nanofiltration system adopts PES (polyethersulfone) design, which can withstand oxidative residual chlorine in water with a tolerance limit of 250,000ppm; the system can automatically backwash, operate and produce water for the nanofiltration system; the online pressure and conductivity meter can monitor the operating pressure difference and produced water quality of the pre-filtration system and nanofiltration system in real time.

[0039] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system, comprising a raw water tank (1), a raw water pump (2), a sodium hypochlorite dosing mechanism (3), a pre-filter (4), a nanofiltration system (5), a nanofiltration water production tank (6), a backwash pump (7) and a dosing system (8), characterized in that: The raw water tank (1) is connected to a raw water pump (2), the raw water pump (2) is connected to a pre-filter (4), the pre-filter (4) is connected to a nanofiltration system (5), the nanofiltration system (5) is connected to a nanofiltration water production tank (6), and the nanofiltration water production tank (6) is connected to a backwash pump (7), and the sodium hypochlorite dosing mechanism (3) and the dosing system (8) are both detection instruments.

2. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system according to claim 1, characterized in that: The top of the raw water tank (1) is connected to a water supply pipe (11), the end of the water supply pipe (11) is connected to a raw water supply mechanism (9), a first valve (10) is provided on the water supply pipe (11), a first valve (12) and a second valve (13) are connected to the side of the raw water tank (1), and a third valve (14) is connected between the raw water tank (1) and the raw water pump (2).

3. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system according to claim 1, characterized in that: A second meter (15) and a fourth valve (16) are connected between the raw water pump (2) and the pre-filter (4); a third meter (17), a fifth valve (18), a sixth valve (39), a fifth meter (19), a fourth meter (20), a seventh valve (21) and an eighth valve (23) are connected between the pre-filter (4) and the nanofiltration system (5).

4. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system according to claim 1, characterized in that: A ninth meter (24) and a digital valve meter (22) are connected to one side of the nanofiltration water production tank (6); a fifteenth valve (25) is connected between the nanofiltration water production tank (6) and the backwash pump (7); a tenth meter (27), a sixteenth valve (26), a seventeenth valve (28), a sixth meter (31), a tenth valve (32), an eleventh valve (33), a ninth valve (35) and a twelfth valve (34) are sequentially connected to one side of the backwash pump (7), and enter the nanofiltration water production tank (6) at the other end.

5. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system according to claim 1, characterized in that: The top of the nanofiltration system (5) is sequentially connected to a fourteenth valve (29), an eighteenth valve (38), a thirteenth valve (30), a seventh meter (37) and an eighth meter (36).

6. A hollow polyethersulfone nanofiltration membrane drinking water softening and liquid medicine separation system according to claim 1, characterized in that: The dosing system (8) includes conductivity, TOC and online microbial detectors, and the sodium hypochlorite dosing mechanism (3) includes water inlet and water output flow detectors.

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