CN211644970U - Spices waste water desalination system based on electrodialysis technique - Google Patents
Spices waste water desalination system based on electrodialysis technique Download PDFInfo
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- CN211644970U CN211644970U CN201922286000.3U CN201922286000U CN211644970U CN 211644970 U CN211644970 U CN 211644970U CN 201922286000 U CN201922286000 U CN 201922286000U CN 211644970 U CN211644970 U CN 211644970U
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Abstract
The utility model discloses a perfume wastewater desalination system based on electrodialysis technology, which comprises a wastewater adjusting tank, an air flotation device, a filtering device and a desalination concentration mechanism which are connected in sequence; the desalination concentration mechanism is an ED ion exchange membrane device, a fresh water outlet of the ED ion exchange membrane device is connected with a water inlet of a biochemical mechanism water inlet adjusting tank, a water outlet of the biochemical mechanism water inlet adjusting tank is connected with a biochemical mechanism, a concentrated water outlet of the ED ion exchange membrane device is connected with a water inlet of a crystallization mechanism water inlet adjusting tank, a water outlet of the crystallization mechanism water inlet adjusting tank is connected with a crystallization mechanism, and the crystallization mechanism crystallizes concentrated water separated out by the ED ion exchange membrane device to prepare salt; secondly, the desalting and concentrating mechanism has good operation and regulation capacity on the fluctuation of the quality and the quantity of the mixed spice wastewater; in addition, the air floatation device is adopted in the early stage, so that the load can be reduced for subsequent biochemical treatment.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection water treatment, concretely relates to spices waste water desalination system based on electrodialysis technique.
Background
There are more than 5000 varieties of synthetic perfumes in the world, more than 400 varieties are commonly used, and the synthetic perfume industry becomes an important part in the modern fine chemical engineering field. The fragrance industry of China developed in the last 50 th century, has been on a large scale so far, and plays a key role in the world fragrance industry. At the present stage, the environmental protection situation in China is severe, and the chemical industry also attaches more and more importance to the treatment of wastewater, wherein the treatment of the wastewater in the perfume industry is particularly important and is also a difficult problem.
The perfume waste water is acidic, belongs to a kind of high-concentration organic matter waste water, and refers to waste liquid and sewage produced in the production process of industrial perfume, and the waste water contains various raw materials, by-products, intermediate products and pollutants produced in the production process, which are lost along with water in the perfume production. The wastewater has high salt content, high organic matter concentration, large water quality fluctuation, complex pollutant components in water, and a large amount of toxic and harmful substances. The current methods for treating such wastewater can be broadly classified into physical, chemical and biochemical treatment methods.
The physical methods include extraction, activated carbon adsorption, resin adsorption and liquid membrane separation techniques. Chemical methods include catalytic oxidation, flocculation, incineration and microelectrolysis. The treatment is carried out by a physicochemical method, the treatment difficulty is high, the cost is high, and the two methods are often used as a pretreatment means to be applied to the wastewater treatment. The biochemical treatment method includes aerobic biological treatment, anaerobic biological treatment and photosynthetic bacteria biological treatment. The biochemical treatment method is a biological treatment technology for decomposing and converting toxic and harmful chemical substances and other various overproof components in water by utilizing the metabolism of microorganisms, the place of the degradation is mainly activated sludge containing microorganisms, biomembranes and corresponding reactors thereof, and is a main method for treating high-concentration organic wastewater at present, but the salt content in the spice wastewater is high, the osmotic pressure caused by high salinity can be increased, the growth of the microorganisms in the biochemical treatment can be inhibited, and the biochemical degradation is difficult to carry out, so that the problem is solved by the utility model.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spices waste water desalination system based on electrodialysis technique to the high salt spices waste water that provides in solving above-mentioned background art is difficult to the degradation problem in biochemical treatment.
In order to achieve the above object, the utility model provides a following technical scheme:
an electrodialysis technology-based perfume wastewater desalination system comprises a wastewater adjusting tank for storing mixed perfume wastewater; and an air flotation device for pretreatment in the early stage; and an air flotation device; and a desalination concentration mechanism; the wastewater adjusting tank, the air flotation device, the filtering device and the desalting and concentrating mechanism are sequentially connected; the desalination concentration mechanism is an ED ion exchange membrane device, a fresh water outlet of the ED ion exchange membrane device is connected with a water inlet of a biochemical mechanism water inlet adjusting tank, a water outlet of the biochemical mechanism water inlet adjusting tank is connected with a biochemical mechanism, a concentrated water outlet of the ED ion exchange membrane device is connected with a water inlet of a crystallization mechanism water inlet adjusting tank, a water outlet of the crystallization mechanism water inlet adjusting tank is connected with a crystallization mechanism, and the crystallization mechanism crystallizes concentrated water separated out by the ED ion exchange membrane device to prepare salt.
Preferably, the filtering device is a cartridge filter, and further removes suspended substances and particulate substances in the water.
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 ED ion exchange 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 output concentrated water is low, and the investment cost of a crystallization system can be reduced; secondly, the desalination concentration mechanism has good operation regulation capacity for the fluctuation of the quality and the quantity of the mixed perfume wastewater, the fresh water outlet can be desalinated to be less than 5ms/cm, and the produced water is suitable for the culture of bacteria in a biochemical pool; in addition, the air floatation device is adopted in the early stage, so that the load can be reduced for subsequent biochemical treatment.
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 utility model provides a perfume wastewater desalination system based on electrodialysis technology as shown in figure 1, which comprises a wastewater adjusting tank 1 for storing mixed perfume wastewater; and an air floatation device 2 used for pretreatment in the early stage; and a filtering device 3; and a desalination concentration mechanism; the wastewater adjusting tank 1, the air flotation device 2, the filtering device 3 and the desalination concentration mechanism are sequentially connected; the desalination concentration mechanism is an ED ion exchange membrane device 4 which can desalinate the salt content of raw water to be less than 5ms/cm, the TDS of concentrated water can reach more than 20 ten thousand mg/L, the yield of the concentrated water is low, the investment and the operation cost of a crystallization system are reduced, a fresh water outlet of the ED ion exchange membrane device is connected with a water inlet of a biochemical mechanism water inlet adjusting tank 5, a water outlet of the biochemical mechanism water inlet adjusting tank is connected with a biochemical mechanism 6, a concentrated water outlet of the ED ion exchange membrane device is connected with a water inlet of a crystallization mechanism water inlet adjusting tank 7, a water outlet of the crystallization mechanism water inlet adjusting tank is connected with a crystallization mechanism 8, and the crystallization mechanism crystallizes the concentrated water separated out by the ED ion exchange membrane device to prepare salt; specifically, the method comprises the following steps: in the embodiment, the air floatation system adopts air dispersing air floatation equipment, the removal effect on grease, jelly and suspended matters in water is obvious, and the removal rate of COD and BOD in wastewater can reach more than 50% by adding appropriate chemical agents; the filter device is a precision filter, also called a safety filter, and is used for further removing suspended substances and particulate substances in water, and a filter element of the filter device in the embodiment is in a 5-micron specification and can meet the water inlet condition; the biochemical mechanism is an activated sludge biochemical tank, the biochemical effluent can reach the standard and can be directly discharged, the process has low investment and simple and convenient operation, and the crystallization mechanism is an MVR evaporator.
The utility model discloses a working method:
1) raw water enters a wastewater adjusting tank, the raw water is injected into an air floatation device by a pump to remove grease, suspended matters and partial COD in the wastewater, and effluent in the air floatation device enters a filtering device; the filtration adopts precise filtration, and further filters micro suspended matters, hard particles, other impurities and the like in the wastewater;
2) the filtered water directly enters an ED ion exchange membrane device for desalination and concentration;
3) fresh water and concentrated water are produced after desalination; fresh water enters a biochemical mechanism water inlet adjusting tank for biochemical treatment after being adjusted, and the biochemical tank adopts the traditional A2The O process, the effluent after the biochemistry reaches the standard and is discharged; the concentrated water enters a water inlet regulating reservoir of a crystallization system for regulation and then enters a crystallization mechanism for crystallization to prepare salt; an MVR evaporator is adopted during the crystallization treatment.
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 (4)
1. A spices waste water desalination system based on electrodialysis technique which characterized in that: comprises a waste water adjusting tank for storing the waste water mixed with spices; and an air flotation device for pretreatment in the early stage; and an air flotation device; and a desalination concentration mechanism; the wastewater adjusting tank, the air flotation device, the filtering device and the desalting and concentrating mechanism are sequentially connected; the desalination concentration mechanism is an ED ion exchange membrane device, a fresh water outlet of the ED ion exchange membrane device is connected with a water inlet of a biochemical mechanism water inlet adjusting tank, a water outlet of the biochemical mechanism water inlet adjusting tank is connected with a biochemical mechanism, a concentrated water outlet of the ED ion exchange membrane device is connected with a water inlet of a crystallization mechanism water inlet adjusting tank, a water outlet of the crystallization mechanism water inlet adjusting tank is connected with a crystallization mechanism, and the crystallization mechanism crystallizes concentrated water separated out by the ED ion exchange membrane device to prepare salt.
2. The electrodialysis based desalination system for perfume waste water according to claim 1, wherein: the filtering device is a security filter and further removes suspended substances and particulate substances in the water.
3. The electrodialysis based desalination system for perfume waste water according to claim 1, wherein: the biochemical mechanism is an activated sludge biochemical tank.
4. The electrodialysis based desalination system for perfume waste water according to 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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| CN201922286000.3U CN211644970U (en) | 2019-12-18 | 2019-12-18 | Spices waste water desalination system based on electrodialysis technique |
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| CN201922286000.3U CN211644970U (en) | 2019-12-18 | 2019-12-18 | Spices waste water desalination system based on electrodialysis technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408696A (en) * | 2020-10-27 | 2021-02-26 | 浙江艺谛环境设备有限公司 | Public toilet sewage zero discharge treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408696A (en) * | 2020-10-27 | 2021-02-26 | 浙江艺谛环境设备有限公司 | Public toilet sewage zero discharge treatment method |
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