CN218435284U - Traditional chinese medicine waste water resource utilization system - Google Patents
Traditional chinese medicine waste water resource utilization system Download PDFInfo
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- CN218435284U CN218435284U CN202220430700.4U CN202220430700U CN218435284U CN 218435284 U CN218435284 U CN 218435284U CN 202220430700 U CN202220430700 U CN 202220430700U CN 218435284 U CN218435284 U CN 218435284U
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Abstract
The utility model provides a traditional chinese medicine waste water utilization system, include the ultrafiltration device, just penetrant unit, membrane distillation device, cold flow jar and the control module that loop through the conveying pipeline and be connected, just be provided with between penetrant unit and the membrane distillation device and just permeate and draw the fluid reservoir, traditional chinese medicine waste water stoste exports ultrafiltration play water after ultrafiltration device filters, ultrafiltration play water is carried to just penetrant unit, just permeate and draw the fluid reservoir and carry and draw liquid to just penetrant unit, just export membrane distillation feed liquid behind the penetrant unit effect, membrane distillation feed liquid is heated and is carried to membrane distillation device, cold flow jar carries the cold flow to membrane distillation device, the distillation play water of membrane distillation device output is partly carried to the cold flow jar, another part is carried and is drawn the fluid reservoir to just permeating. The combined action of the ultrafiltration-forward osmosis-membrane distillation coupling system effectively concentrates and recovers the bioactive substances in the wastewater, saves energy, reduces consumption and improves the economic and environmental benefits of wastewater recycling.
Description
Technical Field
The utility model belongs to the technical field of waste water recovery utilizes, concretely relates to traditional chinese medicine waste water resource utilization system that is used for traditional chinese medicine pharmacy waste water to reduce discharging and retrieves cyclic utilization.
Background
The traditional Chinese medicine manufacturing industry is one of the industries with large fresh water consumption and large waste water production in China, and can cause certain pollution to the environment. The waste water generated in the traditional Chinese medicine preparation process has the characteristics of unstable composition, various organic pollutants, larger difference of waste water of different manufacturers and the like, and belongs to organic waste water which is difficult to treat. Therefore, the resource recycling of the waste water in the traditional Chinese medicine pharmacy process is an important research content for comprehensively preventing and treating water pollution and purifying water environment. The wastewater of traditional Chinese medicine is reused as process water for traditional Chinese medicine production by performing physical chemical and biological treatment on the wastewater of traditional Chinese medicine, so that the problems of production water and wastewater discharge in the traditional Chinese medicine industry are synchronously solved. The Chinese medicinal wastewater mainly contains suspended matters, polysaccharide, protein, lignin, organic acids, alkaloids, amino acids, phenols and the like, wherein the polysaccharide, water and bioactive substances (such as organic acids, alkaloids, phenols and the like) have reutilization values. However, the potential and feasibility of polysaccharide reuse in the traditional Chinese medicine manufacturing industry is still under investigation due to the presence of macromolecular organic impurities (mixture of various polysaccharides and proteins). At present, the research on the resource utilization of the traditional Chinese medicine wastewater mainly focuses on the aspects of water and bioactive substances. According to the sanitary regulations of traditional Chinese medicine production, the pure water produced by the membrane distillation method can be used as a solvent and a diluent of oral or external medicines. Besides precious water resources, the bioactive substances in the traditional Chinese medicine wastewater can be concentrated, spray-dried and recycled, and the traditional Chinese medicine wastewater can be used for other purposes such as feed additives, so that the recycling treatment benefit of the traditional Chinese medicine wastewater is further improved, and the economic feasibility of resource utilization is improved.
At present, the physical and chemical methods combining coagulation, adsorption and precipitation, and the biological methods such as single or combined aerobic and anaerobic treatment processes are widely applied to most of wastewater treatment processes in traditional Chinese medicine production. Although these processes show good ability to reduce the Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) of the chinese herb wastewater, due to the nature of these treatment processes, complete loss of valuable bioactive substances can result in the degradation of contaminants in the chinese herb wastewater. The membrane separation technology gradually becomes an important means for the emission reduction and resource recycling of the traditional Chinese medicine pharmaceutical wastewater by virtue of the technical advantages. In some laboratory scale studies, nanofiltration and reverse osmosis have also been used for concentrated liquids, such as orange juice and other beverage processing, and for dehydration of herbal extracts. However, low molecular weight bioactive substances (such as phenolic compounds, organic acids and oligosaccharides) can still pass through nanofiltration and reverse osmosis membranes. In addition, the reverse osmosis technology has high energy consumption cost in the actual traditional Chinese medicine wastewater treatment. Therefore, how to concentrate, enrich and recover resources such as water and bioactive substances in the traditional Chinese medicine wastewater by using the emerging low-energy-consumption membrane technology is a bottleneck for resource utilization of the traditional Chinese medicine wastewater.
Disclosure of Invention
To the problem that prior art exists, the utility model provides a traditional chinese medicine waste water utilization system utilizes ultrafiltration-just permeating-membrane distillation coupled system, and the advantage of the good, the play water quality of full play embrane method treatment process separation effect reduces the energy consumption when retrieving the bioactive substance in the traditional chinese medicine waste water and water, improves traditional chinese medicine waste water utilization's economic feasibility.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a traditional chinese medicine waste water utilization system, includes the ultrafiltration device, just permeating device, membrane distillation plant, cold flow jar and the control module that loop through the conveying pipeline and be connected, just be provided with between permeating device and the membrane distillation plant and just permeate and draw the fluid reservoir, traditional chinese medicine waste water stoste exports ultrafiltration play water after ultrafiltration device filters, ultrafiltration play water is carried to just permeating device, just permeate and draw the fluid reservoir and carry and draw liquid to just permeating device, just export membrane distillation feed liquid behind the permeating device effect, membrane distillation feed liquid is heated and is carried to membrane distillation plant, cold flow jar carries cold flow to membrane distillation plant, the distilled effluent water of membrane distillation plant output is partly carried to cold flow jar, another part is carried to just permeating and is drawn the fluid reservoir.
Furthermore, a part of the ultrafiltration effluent flows back to the ultrafiltration device for backwashing, which is beneficial to enhancing the filtration effect of the ultrafiltration device.
Furthermore, feed liquid input pipelines of the ultrafiltration device, the forward osmosis device and the membrane distillation device are provided with delivery pumps, and a feed water return pipeline of ultrafiltration, a feed liquid delivery pipeline of forward osmosis and a cold flow output pipeline are provided with delivery pumps.
Preferably, the ultrafiltration membrane component of the ultrafiltration device adopts an ultrafiltration membrane with the molecular weight cutoff of 10000Da, so that macromolecular organic matters in the wastewater can be conveniently intercepted and bioactive substances can permeate.
Furthermore, a conveying pipeline between the membrane distillation feed liquid and the membrane distillation device and a conveying pipeline between the membrane distillation device and the cold flow tank are provided with temperature control modules, so that the temperature of the feed liquid can be accurately controlled, and the filtering and recycling effects of the feed liquid can be guaranteed.
Furthermore, a conveying pipeline of the membrane distillation feed liquid output by the forward osmosis device is connected with a waste heat output end of a traditional Chinese medicine decoction process, and the membrane distillation feed liquid is heated by using decoction waste heat, so that energy is effectively saved and consumption is reduced.
The water inlet pipeline and the water outlet pipeline of the ultrafiltration device, the forward osmosis device and the membrane distillation device are provided with sensing online monitoring components such as liquid pressure, flow rate and conductivity according to actual needs.
The utility model discloses a theory of operation and process do:
firstly, chinese medicine wastewater is filtered by an ultrafiltration device at the flow of 220ml/min and the water inlet pressure of 1bar, most bioactive substances with the molecular weight of about 1000Da penetrate through the ultrafiltration membrane and are remained in the effluent of the ultrafiltration membrane, and macromolecular organic matters such as protein, polysaccharide and the like are removed. The ultrafiltration device is backwashed for 5min after running for 30min until all the Chinese medicinal wastewater is filtered.
Then, the ultrafiltration effluent enters a forward osmosis device of the next stage to separate bioactive substances from water molecules. The volume of the feed liquid (ultrafiltration effluent) and the draw liquid (2 mol/L sodium chloride solution) of forward osmosis are both 1L, and the two liquids are in counter-current circulation at the cross flow speed of 8.5cm/s at two sides of the forward osmosis membrane. When the mass of the effluent at the side of the drawing liquid is increased by 700g, a forward osmosis cycle is ended, and then new feed liquid and the drawing liquid are added to start a new forward osmosis cycle.
And finally, feeding the diluted draw solution subjected to forward osmosis treatment into a membrane distillation device for treatment, and concentrating and regenerating the diluted draw solution while obtaining clean water. The temperatures of the feed solution (1L of forward osmosis diluted draw solution) and the cold flow (1L of pure water) of the membrane distillation are respectively maintained at 55 ℃ and 15 ℃, the two solutions are circulated in a counter-flow manner at a cross flow speed of 8.5cm/s on both sides of the membrane distillation membrane, the membrane distillation process is stopped when the mass of the effluent on the cold flow side is increased by 700g, and new feed solution and cold flow are added for continuous treatment.
The utility model has the advantages that:
1. the ultrafiltration process is adopted to separate macromolecular organic matters in the traditional Chinese medicine wastewater, the forward osmosis process is combined to concentrate valuable bioactive substances in the wastewater, the concentrated bioactive substances can be dried and recycled, the membrane distillation process is used to concentrate the diluted draw solution in the forward osmosis, the draw solution is regenerated and reused in the forward osmosis process, and meanwhile, the effluent of the membrane distillation process can be reused for production, so that the resource recycling is realized.
2. The adopted forward osmosis process has low energy consumption and strong interception capability; meanwhile, the membrane distillation process utilizes the waste heat generated in the production process of the traditional Chinese medicine, so that the energy is saved, the consumption is reduced, and the economic and environment-friendly benefits of wastewater recycling are improved.
Drawings
Fig. 1 is a schematic diagram of the overall system structure of the present invention.
In the figure: 1-stock solution, 2-ultrafiltration device, 3-backwash effluent, 4-ultrafiltration effluent, 5-forward osmosis device, 6-concentrated bioactive substance, 7-membrane distillation feed liquid, 8-membrane distillation device, 9-forward osmosis draw liquid tank and 10-cold flow tank.
Detailed Description
In the description of the present invention, it should be noted that the specific conditions are not specified in the examples, and the description is made according to the conventional conditions or the conditions suggested by the manufacturers. The components, modules and the like used are conventional products which are not indicated by manufacturers and can be obtained by commercial purchase.
The invention will be described in further detail with reference to the following drawings and specific embodiments, which are provided for illustration and not for limitation of the invention.
As shown in fig. 1, the present embodiment provides a resource utilization system for traditional Chinese medicine wastewater, which includes an ultrafiltration device 2, a forward osmosis device 5, a membrane distillation device 8, a cold flow tank 10, and a control module, which are sequentially connected by a conveying pipeline, wherein a forward osmosis draw liquid tank 9 is disposed between the forward osmosis device 5 and the membrane distillation device 8, a raw traditional Chinese medicine wastewater 1 is filtered by the ultrafiltration device 2 and then outputs an ultrafiltration effluent 4, the ultrafiltration effluent 4 is conveyed to the forward osmosis device 5, the forward osmosis draw liquid tank 9 conveys a draw liquid to the forward osmosis device 5, the forward osmosis device 5 outputs a membrane distillation feed liquid 7 and a concentrated bioactive substance 6, the membrane distillation feed liquid 7 is heated and conveyed to the membrane distillation device 8, the cold flow tank 10 conveys a cold flow to the membrane distillation device 8, and a part of the distillation effluent output by the membrane distillation device 8 is conveyed to the cold flow tank 10 and another part of the distillation effluent is conveyed to the forward osmosis draw liquid tank 9.
Part of the ultrafiltration effluent 4 flows back to the ultrafiltration device 2 for backwashing, and the backwashing effluent 3 is discharged from the ultrafiltration device 2 after washing, so that the filtering effect of the ultrafiltration device 2 is enhanced; feed liquid input pipelines of the ultrafiltration device 2, the forward osmosis device 5 and the membrane distillation device 8 are provided with delivery pumps, and a return pipeline of ultrafiltration effluent 4, a forward osmosis liquid-drawing delivery pipeline and a cold flow output pipeline are provided with delivery pumps.
The membrane component of the ultrafiltration device 2 adopts an ultrafiltration membrane with the molecular weight cutoff of 10000Da, the molecular weight cutoff is between the molecular weight of macromolecular organic matters (more than 20000 Da) and bioactive substances (less than 1000 Da) in the traditional Chinese medicine wastewater, and the macromolecular organic matters in the wastewater are intercepted and the bioactive substances are allowed to permeate.
And a conveying pipeline between the membrane distillation feed liquid 7 and the membrane distillation device 8 and a conveying pipeline between the membrane distillation device 8 and the cold flow tank 10 are provided with temperature control modules.
And a conveying pipeline of the membrane distillation feed liquid 7 output by the forward osmosis device 5 is connected with a waste heat output end of the traditional Chinese medicine decocting process.
In the embodiment, the flat membrane component is composed of two cuboid acrylic plates, the membrane material is clamped between the acrylic plates, the forward osmosis membrane and the membrane distillation membrane respectively adopt a Cellulose Triacetate (CTA) forward osmosis membrane and a polyvinylidene fluoride (PVDF) membrane distillation membrane, cross-flow filtration is adopted in the forward osmosis process and the membrane distillation process, water flows flow circularly and reversely flow on two sides of the membrane, and the absorption liquid diluted in the forward osmosis process is concentrated and regenerated in the membrane distillation process.
Experiments are carried out by taking ammonium glycyrrhizinate in the traditional Chinese medicine wastewater as a model compound, and the utility model discloses the bioactive substance in the wastewater can be concentrated and recovered effectively by the traditional Chinese medicine wastewater resource utilization system. As can be seen from the data of the concentration change of ammonium glycyrrhetate in the ultrafiltration-forward osmosis-membrane distillation coupled system in table 1, the ammonium glycyrrhetate present in the forward osmosis feed liquid is successfully trapped by the forward osmosis membrane and concentrated in the forward osmosis feed liquid, but does not enter the forward osmosis draw liquid. Moreover, the concentration coefficient of the ammonium glycyrrhetate is close to the volume reduction coefficient of the forward osmosis feed liquid, which shows that the bioactive substances can be effectively concentrated in the forward osmosis process, namely, the ultrafiltration-forward osmosis-membrane distillation coupling system can recover valuable bioactive substances.
TABLE 1
| Ammonium Glycyrrhizate concentration | |
| Chinese medicine wastewater stock solution | 1.13mg/L |
| Ultrafiltrating effluent/forward osmosis feed solution (influent) | 1.74mg/L |
| Feed liquid after forward osmosis experiment | 3.68mg/L |
| Forward osmosis dilution draw solution (effluent) | 0mg/L |
| Concentration coefficient of ammonium glycyrrhetate | 2.11 |
| Volume reduction factor of forward osmosis feed liquid | 2.32 |
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A traditional chinese medicine waste water utilization system which characterized in that: the system comprises an ultrafiltration device, a forward osmosis device, a membrane distillation device, a cold flow tank and a control module which are sequentially connected through a conveying pipeline, wherein a forward osmosis drawing liquid tank is arranged between the forward osmosis device and the membrane distillation device, a traditional Chinese medicine wastewater stock solution is filtered by the ultrafiltration device and then outputs ultrafiltration effluent, the ultrafiltration effluent is conveyed to the forward osmosis device, the forward osmosis drawing liquid tank conveys drawing liquid to the forward osmosis device, the forward osmosis device outputs membrane distillation feed liquid after acting, the membrane distillation feed liquid is heated and conveyed to the membrane distillation device, the cold flow tank conveys cold flow to the membrane distillation device, one part of distilled effluent output by the membrane distillation device is conveyed to the cold flow tank, and the other part of distilled effluent output by the membrane distillation device is conveyed to the forward osmosis drawing liquid tank.
2. The resource utilization system for traditional Chinese medicine wastewater according to claim 1, which is characterized in that: and part of the ultrafiltration effluent reflows to the ultrafiltration device for backwashing.
3. The resource utilization system for traditional Chinese medicine wastewater according to claim 1 or 2, characterized in that: feed liquid input pipelines of the ultrafiltration device, the forward osmosis device and the membrane distillation device are provided with delivery pumps, and a feed pump is arranged on an ultrafiltration effluent return pipeline, a forward osmosis liquid-drawing delivery pipeline and a cold flow output pipeline.
4. The resource utilization system for traditional Chinese medicine wastewater according to claim 1 or 2, characterized in that: the membrane component of the ultrafiltration device adopts an ultrafiltration membrane with the molecular weight cutoff of 10000 Da.
5. The resource utilization system for traditional Chinese medicine wastewater according to claim 1, characterized in that: and a conveying pipeline between the membrane distillation feed liquid and the membrane distillation device and a conveying pipeline between the membrane distillation device and the cold flow tank are provided with temperature control modules.
6. The resource utilization system for traditional Chinese medicine wastewater according to claim 1, which is characterized in that: and a conveying pipeline of the membrane distillation liquid output by the forward osmosis device is connected with a waste heat output end of the traditional Chinese medicine decocting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430700.4U CN218435284U (en) | 2022-03-01 | 2022-03-01 | Traditional chinese medicine waste water resource utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430700.4U CN218435284U (en) | 2022-03-01 | 2022-03-01 | Traditional chinese medicine waste water resource utilization system |
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| Publication Number | Publication Date |
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| CN218435284U true CN218435284U (en) | 2023-02-03 |
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| CN202220430700.4U Active CN218435284U (en) | 2022-03-01 | 2022-03-01 | Traditional chinese medicine waste water resource utilization system |
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