CN211644971U - Antibiotic washing centrifugation effluent disposal system based on electrodialysis technique - Google Patents
Antibiotic washing centrifugation effluent disposal system based on electrodialysis technique Download PDFInfo
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- CN211644971U CN211644971U CN201922292181.0U CN201922292181U CN211644971U CN 211644971 U CN211644971 U CN 211644971U CN 201922292181 U CN201922292181 U CN 201922292181U CN 211644971 U CN211644971 U CN 211644971U
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Abstract
The utility model discloses an antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology, which comprises a wastewater adjusting tank and a filtering device which are connected with each other; the waste liquid filtered by the filtering device enters a desalination and concentration mechanism for desalination and concentration, wherein the desalination and concentration mechanism is an electrodialysis ionic membrane device, a fresh water outlet of the electrodialysis ionic membrane device is connected to a biochemical mechanism for biochemical treatment, a concentrated water outlet of the electrodialysis ionic membrane device is connected to a crystallization mechanism, and the concentrated water separated out by the electrodialysis ionic membrane device is crystallized to prepare salt; secondly, sulphuric acid is added into the original wastewater to adjust the pH value to be about 6, ammonia water can be neutralized, no other ions enter the wastewater, in addition, the desalination concentration mechanism can adjust and deal with the impact of the inlet water quality fluctuation through the operation parameters, the fresh water outlet can be desalinated to the lowest degree, and meanwhile, the ammonia nitrogen content is reduced to the lowest degree.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection water treatment, concretely relates to antibiotic washing centrifugation effluent disposal system based on electrodialysis technique.
Background
The antibiotic medicine is a variety which is consumed more at home at present, most of the antibiotic medicine belongs to biological products, is prepared by extraction in a fermentation process, is a compound generated by microorganisms, plants and animals in the life process, has chemical substances capable of selectively inhibiting or killing other microorganisms or tumor cells at low concentration, and is an important chemical medicine for controlling infectious diseases, protecting health and preventing and treating animal and plant diseases for human beings. At present, more than 300 enterprises for producing antibiotics in China exist, the production accounts for 20% -30% of the world output, and the output is increased year by year, so that the antibiotic preparation production system becomes one of the main antibiotic preparation producing countries in the world.
During the production process of antibiotic raw materials or medicines, a large amount of waste water is generated, and the method mainly comprises the following steps: the crystal liquid and waste mother liquid of the extraction process belong to high-concentration organic wastewater; washing wastewater, belonging to medium-concentration organic wastewater; the washing wastewater contains ammonium sulfate, ammonium formate, ammonia water, butyl acetate and a small amount of macromolecular organic matters, has no toxic and harmful substances, and is light yellow and alkaline. And the ammonia nitrogen content in the wastewater is about 6000mg/L, the COD content is 10000-20000 mg/L, the wastewater cannot be directly discharged, and the wastewater can be discharged after being further treated to reach the standard.
At present, the process of the wastewater is generally a combined treatment mode of a physical and chemical method and a biochemical method. The physical and chemical method comprises modes of coagulation, precipitation, filtration and the like; the biochemical method comprises anaerobic method, common activated sludge method, pressurized biochemical method, deep well aeration method, biological contact oxidation method, biological fluidized bed method, sequencing batch intermittent activated sludge method, etc., wherein the more mature technology is applied to the activated sludge method; although the wastewater treated by the physical and chemical method can remove most organic matters and harmful substances, the high salt content in the wastewater cannot be reduced, the bacterial culture in the subsequent biochemical activated sludge can be inhibited, the operation of a biochemical system is unstable, and the biochemical effluent cannot reach the standard. And the whole process flow is long, the occupied area is wide, and the medicament consumption is large. How to select a better processing mode is an urgent problem at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an antibiotic washing centrifugation waste water treatment system based on electrodialysis technique to solve the problem that exists among the antibiotic washing centrifugation waste water treatment that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology comprises a wastewater adjusting tank 1 and a filtering device 2 which are connected with each other; and enabling the waste liquid filtered out by the filtering device to enter a desalination concentration mechanism for desalination concentration, wherein the desalination concentration mechanism is an electrodialysis ionic membrane device 3, a fresh water outlet of the electrodialysis ionic membrane device is connected to a biochemical mechanism 4 for biochemical treatment, a concentrated water outlet of the electrodialysis ionic membrane device is connected to a crystallization mechanism 5, and the concentrated water separated out by the electrodialysis ionic membrane device is crystallized to prepare salt.
Preferably, the pH value of the wastewater in the wastewater adjusting tank is adjusted to 5-6.5 by adding sulfuric acid to neutralize ammonia water in the wastewater adjusting tank.
Preferably, the pH value of the concentrated water in the water inlet pool of the crystallization mechanism is adjusted to 2 by adding moderate sulfuric acid into the concentrated water to perform the second pH value adjustment.
Preferably, the filtering device is an activated carbon filtering device, and suspended substances and particulate substances in the wastewater after the wastewater is adjusted by adding acid are removed.
Preferably, the biochemical mechanism is an activated sludge biochemical tank.
Preferably, the crystallization mechanism is an MVR evaporator.
Compared with the prior art, the beneficial effects of the utility model are that:
the electrodialysis ionic membrane device is adopted, the requirement on the quality of inlet water is low, the service life of an ion exchange membrane is long, the TDS (total dissolved solids) of concentrated water can reach 20 ten thousand mg/L, the produced concentrated water is low in quantity, and the investment cost of a crystallization system can be reduced; secondly, add sulphuric acid into former waste water and adjust pH about 6, can neutralize the aqueous ammonia, can guarantee again that no other ion gets into, in addition, the concentrated mechanism of desalination to the undulant impact of the quality of water of intaking, the accessible is to operating parameter adjustment reply, and its fresh water goes out the water and can desalt to extremely low degree, also reduces ammonia nitrogen content to very low simultaneously.
Drawings
Fig. 1 is a schematic view of the frame structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The electrodialysis technology is to realize the purposes of concentration, desalination, refining and purification of the solution by utilizing the selective permeability of the ion exchange membrane and the directional migration of charged ions through the ion exchange membrane to separate the charged ions from the aqueous solution and other uncharged components under the action of a direct current electric field. At present, the electroosmosis folding technology is developed into a large-scale chemical unit process, and plays an important role in the field of membrane separation. The electrodialysis has good regulation and control capability on the impact of the fluctuation of the quality of the inlet water, the fresh water can be desalted to an extremely low degree according to the selection of the process, the TDS of the concentrated water can reach 20 ten thousand mg/L, the yield of the concentrated water is low, and the investment and the operation cost of a crystallization system can be reduced;
the utility model provides an antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology, which is shown in figure 1 and comprises a wastewater adjusting tank and a filtering device which are connected with each other; the filtration device is connected with the desalination concentration mechanism, and the waste liquid filtered out by the filtration device enters the desalination concentration mechanism to carry out desalination concentration, wherein, the desalination concentration mechanism is an electrodialysis ionic membrane device, the fresh water outlet of the electrodialysis ionic membrane device is connected to the biochemical mechanism, carries out biochemical treatment on the fresh water separated out by the electrodialysis ionic membrane device, and water the concentrated water outlet of the electrodialysis ionic membrane device is connected to the crystallization mechanism, and the concentrated water separated out by the electrodialysis ionic membrane device is crystallized to prepare salt. The pH value of the wastewater in the adjusting tank is 5-6.5, the filtering device is an activated carbon filtering device, suspended substances and granular substances in the wastewater after acid adding adjustment are removed, peculiar smell can be adsorbed, the biochemical mechanism is an activated sludge biochemical tank, effluent after biochemical treatment reaches the standard and is discharged outside, the crystallizing mechanism is an MVR evaporator, the concentrated water in a water inlet tank of the crystallizing mechanism is added with medium sulfuric acid to adjust the pH value for the second time, the pH value of the concentrated water in the water inlet tank is adjusted to 2, ammonium formate in the concentrated water is converted into ammonium sulfate, the salt making quality is improved, evaporation crystallization is carried out, and salt making is carried out.
The utility model discloses a working method:
1) raw water enters a wastewater adjusting tank, sulfuric acid is added into the tank to neutralize ammonia water, the pH value is adjusted, and the adjusted wastewater enters a filtering device; the filtering device adopts active carbon for filtering, and removes suspended matters, particulate matters and peculiar smell of the wastewater;
2) the filtered water directly enters an electrodialysis ion membrane device for desalination and concentration;
3) fresh water and concentrated water are produced after desalination; fresh water enters a biochemical mechanism, concentrated water enters a crystallization mechanism, wherein an activated sludge process is adopted in a biochemical treatment mode, and the concentrated water is discharged after reaching the standard; and during crystallization treatment, an MVR evaporator is adopted, concentrated water enters a water inlet tank in a crystallization mechanism, secondary sulfuric acid is carried out to adjust the pH value to be about 2, ammonium formate in the concentrated water is converted into ammonium sulfate, the salt production quality is improved, and evaporation crystallization and salt production are carried out.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. An antibiotic washing centrifugation effluent disposal system based on electrodialysis technique which characterized in that: comprises a wastewater adjusting tank and a filtering device which are connected with each other; the waste liquid filtered out by the filtering device enters a desalination concentration mechanism for desalination concentration, wherein the desalination concentration mechanism is an electrodialysis ionic membrane device, a fresh water outlet of the electrodialysis ionic membrane device is connected to a biochemical mechanism for biochemical treatment, a concentrated water outlet of the electrodialysis ionic membrane device is connected to a crystallization mechanism, and concentrated water precipitated by the electrodialysis ionic membrane device is crystallized to prepare salt.
2. An antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology as claimed in claim 1, wherein: sulfuric acid is added into a wastewater adjusting tank to neutralize ammonia water, and the pH value of wastewater in the adjusting tank is adjusted to 5-6.5 for the first time.
3. An antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology as claimed in claim 1, wherein: and adding moderate sulfuric acid into the concentrated water in the water inlet tank of the crystallization mechanism to adjust the pH value for the second time, so as to adjust the pH value of the concentrated water in the water inlet tank to 2.
4. An antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology as claimed in claim 1, wherein: the filtering device is an active carbon filtering device.
5. An antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology as claimed in claim 1, wherein: the biochemical mechanism is an activated sludge biochemical tank.
6. An antibiotic washing centrifugal wastewater treatment system based on electrodialysis technology as claimed in claim 1, wherein: the crystallization mechanism is an MVR evaporator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922292181.0U CN211644971U (en) | 2019-12-18 | 2019-12-18 | Antibiotic washing centrifugation effluent disposal system based on electrodialysis technique |
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| CN201922292181.0U CN211644971U (en) | 2019-12-18 | 2019-12-18 | Antibiotic washing centrifugation effluent disposal system based on electrodialysis technique |
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| CN211644971U true CN211644971U (en) | 2020-10-09 |
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| CN201922292181.0U Active CN211644971U (en) | 2019-12-18 | 2019-12-18 | Antibiotic washing centrifugation effluent disposal system based on electrodialysis technique |
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