CN116062948A - Zero discharge process of garlic rinsing wastewater - Google Patents

Zero discharge process of garlic rinsing wastewater Download PDF

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Publication number
CN116062948A
CN116062948A CN202310222281.4A CN202310222281A CN116062948A CN 116062948 A CN116062948 A CN 116062948A CN 202310222281 A CN202310222281 A CN 202310222281A CN 116062948 A CN116062948 A CN 116062948A
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garlic
equipment
wastewater
rinsing
concentration
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Inventor
马寅斐
赵岩
谭梦男
初乐
李�根
吴茂玉
丁辰
张一鸣
涂尊永
陈成
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JINAN INST OF FRUIT PRODUCTS CHINA GENERAL SUPPLY AND MARKETING COOPERATIVE
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JINAN INST OF FRUIT PRODUCTS CHINA GENERAL SUPPLY AND MARKETING COOPERATIVE
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/02—Dehydrating; Subsequent reconstitution
    • A23B7/024—Freeze-drying, i.e. cryodessication or lyophilisation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/02—Dehydrating; Subsequent reconstitution
    • A23B7/026—Spray-drying
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/10—Natural spices, flavouring agents or condiments; Extracts thereof
    • A23L27/105—Natural spices, flavouring agents or condiments; Extracts thereof obtained from liliaceae, e.g. onions, garlic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/18—Evaporating by spraying to obtain dry solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a zero discharge process of garlic rinsing wastewater. The process of the invention comprises the following steps: coarse filtering the garlic rinsing wastewater to obtain granular garlic residues and filtrate, centrifuging the filtrate to obtain small granular garlic puree and centrifugal light liquid, and treating the centrifugal light liquid by a concentration system to obtain concentrated wastewater with higher concentration and clear water, wherein the clear water is recycled; the concentrated wastewater with higher concentration and the granular garlic residues and the granular mashed garlic obtained by the process are dried to prepare the product. The process provided by the invention not only realizes recycling of beneficial components in the garlic rinsing wastewater, improves the resource utilization rate and increases the economic benefit, but also improves the wastewater treatment efficiency by means of automatic equipment, and in addition, the treated clean water can be reused in the garlic rinsing process, thereby realizing recycling of the wastewater, reducing the sewage treatment cost and truly realizing zero emission of the garlic rinsing wastewater.

Description

Zero discharge process of garlic rinsing wastewater
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a zero discharge process of garlic rinsing wastewater.
Background
Garlic, one of the most common condiments in life, has a unique spicy and irritating taste and is always popular with people. In recent years, garlic processed products such as preserved garlic, garlic powder, garlic beverage and the like are layered endlessly, and garlic processing gradually forms industry, but a large amount of wastewater is generated in the garlic processing process, so that the processing difficulty is high, and the investment cost of the garlic processing industry is increased.
At present, in the garlic processing process, garlic is pretreated firstly, and the pretreatment of the garlic comprises the following steps: selecting, trimming, cleaning, slicing/grinding and rinsing. In the pretreatment process of garlic, because the garlic is required to be repeatedly rinsed, the wastewater generated in the garlic treatment process contains complex components, contains more garlic floating slag, and also contains various organic matters such as garlic protein, polysaccharide, garlicin and the like, the COD content of the wastewater is higher, and the garlicin in the wastewater has higher antibacterial property, so that the treatment difficulty of the garlic rinsing wastewater is further increased.
For rinsing wastewater generated in the garlic processing process, the prior art focuses on flocculating and filtering garlic scum by a physical method, and then treating the wastewater by a chemical or bio-chemical method so that the wastewater reaches a standard capable of being discharged. However, in these operations, on one hand, a large amount of chemical agents or bioactive components are required to be added to decompose or degrade the components such as allicin in the wastewater, and even if the purpose of eliminating impurities in the wastewater can be achieved, the production cost is greatly increased; on the other hand, more garlic beneficial active ingredients contained in the garlic rinsing wastewater are destroyed and cannot be utilized, so that larger resource waste is caused; in addition, the strong bacteriostatic effect of allicin makes the traditional biochemical method for treating garlic rinsing wastewater not good.
Therefore, there is a need to develop a comprehensive utilization method of the garlic rinsing wastewater, which changes the traditional treatment method of the garlic rinsing wastewater into the utilization wastewater, and recycles the organic impurities in the garlic rinsing wastewater in the garlic processing process to form other industries, thereby reducing the resource waste and increasing the economic benefit, and simultaneously, reducing the treatment difficulty of the garlic rinsing wastewater, reducing the cost and realizing the zero discharge of the garlic industrial wastewater.
Disclosure of Invention
In order to solve the technical problems, the invention provides a zero discharge process of garlic rinsing wastewater.
The zero discharge process of the garlic rinsing wastewater is realized by comprehensively utilizing the rinsing wastewater generated in the garlic processing process, more specifically, the process is realized by recovering and drying solid solution in the garlic rinsing wastewater to prepare garlic powder products, and meanwhile, the recovered clear water is recycled in the garlic rinsing process to realize the recycling of the wastewater.
The process not only can realize the recycling of the garlic active ingredients contained in the garlic rinsing wastewater, reduce the waste of resources and increase the economic benefit, but also synchronously reduces the treatment difficulty of the garlic rinsing wastewater, reduces the treatment cost of the wastewater and truly realizes the zero emission of the garlic rinsing wastewater.
The invention provides a zero discharge process of garlic rinsing wastewater, which comprises the following steps:
s1, coarse filtration of garlic rinsing wastewater to obtain garlic residues with large particles and filtrate respectively;
s2, centrifuging the filtrate obtained after the filtering in the step S1 to obtain small-particle mashed garlic and centrifugal light liquid;
s3, treating the centrifugal light liquid obtained after the filtering in the step S2 by a concentration system to obtain concentrated wastewater and clear water with higher concentration respectively;
wherein, the clear water is recycled and reused, and the concentrated wastewater with higher concentration is dried to prepare a product;
s4, drying the garlic residues with the particles obtained in the step S1 and the small-particle mashed garlic obtained in the step S2, and preparing the garlic residues with the particles obtained in the step S2 into products.
In the above process, the coarse filtration in step S1 is performed by using a vibrating screen filtration device, where the vibrating screen filtration device is equipped with a vibrating screen filtration system, and the aperture of a filter screen in the vibrating screen filtration system is 500 mesh.
In the above process, in step S2, the filtrate obtained after the filtration in step S1 is centrifuged by using a high-speed disk centrifuge.
In the above process, the concentration system in step S3 includes an ultrafiltration clarification device, a reverse osmosis concentration device, and an evaporation concentration device, and the drying is implemented by a spray drying device.
Preferably, in the above process step S3, the supernatant obtained after filtering in step S2 is processed by a concentration system, and the specific process is as follows:
the centrifugal light liquid obtained after the filtration in the step S2 is firstly subjected to ultrafiltration by ultrafiltration concentration equipment and an ultrafiltration clarification system, on one hand, the ultrafiltration concentrated liquid obtained after the ultrafiltration returns to the step S2 to repeat the operation, and on the other hand, the obtained ultrafiltration clarified liquid enters reverse osmosis concentration equipment and is subjected to reverse osmosis concentration by the reverse osmosis concentration system;
wherein, the clear water after reverse osmosis concentration is returned to be used in the rinsing pretreatment process of garlic; and meanwhile, evaporating and concentrating the concentrated solution after reverse osmosis concentration by adopting an evaporating and concentrating device, returning the condensed water after evaporation and condensation to the reverse osmosis concentrating device, and drying the evaporated concentrated solution to prepare a product.
In the above process, in step S4, the drying is performed by any one of a vacuum drying apparatus, a freeze drying apparatus, and a spray drying apparatus.
Preferably, in step S4, the granular garlic residues are dried by using a vacuum drying device or a freeze drying device, and the granular garlic residues are dried by using a spray drying device.
In the above process, the products in steps S3 and S4 are in powder form.
Preferably, the products in step S3 and step S4 are in powder form, and include any one of garlic seasoning, animal feed additive, garlic beverage raw material, garlic scientific research material, garlic industrial building additive, industrial dye and industrial paint.
The invention provides a zero discharge process of garlic rinsing wastewater, which is realized by the following technical scheme:
s1, adopting vibrating screen filtering equipment, and coarsely filtering the garlic rinsing wastewater by utilizing a vibrating screen filtering system with the aperture of a filter screen of 500 meshes to respectively obtain garlic residues and filtrate;
s2, centrifuging the filtrate obtained after the filtering in the step S1 by adopting a high-speed disc centrifuge to obtain small-particle garlic sludge and centrifugal light liquid;
s3, treating the centrifugal light liquid obtained after the filtration in the step S2 by a concentration system, wherein the specific steps are as follows:
ultrafiltering the light centrifugal liquid obtained after filtering in the step S2 by using an ultrafiltration concentration device and an ultrafiltration clarification system, wherein on one hand, the ultrafiltered concentrated liquid obtained after ultrafiltration returns to the step S2 for centrifugation, and on the other hand, the obtained ultrafiltered clarified liquid enters a reverse osmosis concentration device and is subjected to reverse osmosis concentration by using the reverse osmosis concentration system;
wherein, the clear water after reverse osmosis concentration is returned to be used in the rinsing pretreatment process of garlic; simultaneously, evaporating and concentrating the concentrated solution after reverse osmosis concentration by adopting evaporating and concentrating equipment, returning the condensed water after evaporation and condensation to the reverse osmosis concentrating equipment, and preparing the product after spray drying the concentrated solution after evaporation;
s4, drying the garlic residues with the particles obtained in the step S1 and the small-particle garlic residues obtained in the step S2, and preparing the garlic residues with the particles obtained in the step S2 into products.
In addition, the zero discharge process of the garlic rinsing wastewater is realized by adopting the garlic rinsing wastewater treatment device.
The garlic rinsing wastewater treatment device comprises: the device comprises a main pipeline, a first pipeline, a second pipeline, a third pipeline, and vibrating screen filtering equipment, high-speed centrifugal equipment, concentration equipment and drying equipment which are sequentially connected in series on the main pipeline;
the inlet of the first pipeline is connected with the vibrating screen filtering equipment, and the outlet of the first pipeline is connected with the drying equipment;
the inlet of the second pipeline is connected with the high-speed centrifugal equipment, and the outlet of the second pipeline is connected with the drying equipment;
the inlet of the third pipeline is connected with the concentration equipment, and the outlet of the third pipeline is connected with the inlet of the main pipeline;
the vibrating screen filtering device is arranged at one inlet end of the main pipeline.
In the garlic rinsing wastewater treatment device, the concentration equipment comprises ultrafiltration concentration equipment, reverse osmosis concentration equipment and evaporation concentration equipment.
The drying equipment comprises first drying equipment and second drying equipment, wherein the first drying equipment is connected with the concentrating equipment and the outlet of the second pipeline, and the second drying equipment is connected with the outlet of the first pipeline.
The drying equipment is at least one selected from vacuum drying equipment, freeze drying equipment and spray drying equipment.
Wherein the first drying device is spray drying device, and the second drying device is freeze drying device or vacuum drying device.
The garlic rinsing wastewater treatment device also comprises a controller, wherein the controller is connected with the vibrating screen filtering equipment, the high-speed centrifugal equipment, the concentrating equipment and the drying equipment.
The invention has the beneficial effects that:
1. the invention provides a process for zero discharge of garlic rinsing wastewater, which is characterized in that the garlic rinsing wastewater is treated by combining multistage filtering and separating equipment such as coarse filtering of a vibrating screen, centrifugation of a high-speed disc centrifuge, concentration of a concentration system, spray drying and the like, so that the recycling of a plurality of beneficial components in the garlic wastewater is realized, the utilization rate of resources is improved, and the cost of wastewater treatment is reduced; in addition, the equipment adopted by the process can be controlled by the controller, so that industrialized automatic production can be realized, and the treatment efficiency of the wastewater is greatly improved.
2. The clear water produced after the treatment of the concentration system can be recycled or can be directly reused in the garlic rinsing process, thereby completely realizing the recycling of the waste water, improving the utilization rate of water resources and realizing the zero discharge of the waste water.
Drawings
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic structural view of a garlic rinsing wastewater treatment device provided by the invention.
Detailed Description
The present invention will now be further described in connection with specific embodiments in order to enable those skilled in the art to better understand the invention.
Example 1
The garlic rinsing wastewater treated by the method is the garlic rinsing wastewater of a certain food enterprise, and the daily output of the wastewater is as follows: 300m 3 And/d, parameters of the garlic rinsing wastewater are as follows:
SS (suspended solid) is 5000mg/L, protein content is 2600mg/L, polysaccharide content is 3300mg/L, and allicin content is 14mg/L.
S1, coarse filtering is carried out on garlic rinsing wastewater by adopting vibrating screen filtering equipment, wherein the vibrating screen filtering equipment is provided with a vibrating screen filtering system, the aperture of a filter screen is 500 meshes, and filtrate and garlic residues are obtained after filtering;
wherein the wet solids of the garlic residues are more than 500kg/d, the water content is more than 70%, and the diameter of the garlic residues is more than 500 meshes.
S2, centrifuging the filtrate obtained in the step S1 by adopting a high-speed disc centrifuge to obtain small-particle garlic sludge and centrifugal light liquid;
wherein the wet solids of the obtained small-particle garlic sludge is more than 6.75t/d, and the water content is more than 80 percent; the obtained centrifugal light liquid SS is less than 10mg/L, the protein content is 2600mg/L, the polysaccharide content is 3300mg/L, and the allicin content is 14mg/L.
S3, treating the centrifugal light liquid obtained after the centrifugation in the step S2 by an ultrafiltration device and an ultrafiltration clarification system, returning the SS of the obtained ultrafiltration concentrated liquid to the centrifugation operation process in the step S2, and repeating the operations; in addition, the clear solution (SS is less than 1 mg/L) generated after ultrafiltration further enters reverse osmosis concentration equipment, and a reverse osmosis concentration system is adopted for treatment to respectively obtain clear water and concentrated wastewater;
wherein, COD of clear water obtained after reverse osmosis is less than 200mg/L, allicin is less than 2mg/L, and the obtained clear water is recovered or returned to the pretreatment process for rinsing garlic.
Meanwhile, concentrated wastewater is obtained after reverse osmosis concentration, the protein content is 52000mg/L, the polysaccharide content is 66000mg/L, the allicin content is 242mg/L, the obtained concentrated wastewater is further evaporated and concentrated by an evaporation and concentration device, wherein the obtained evaporation and condensation water returns to the reverse osmosis device of the step S3 and the operation is repeated, in addition, the concentrated solution obtained after further concentration has the protein content of 173.33g/L, the polysaccharide content of 219.99g/L and the allicin content of 307mg/L, and the concentrated solution is converted into powder by a spray drying device and is further used for the preparation process of garlic products such as garlic seasonings, animal feeds, garlic beverage raw materials, garlic scientific research materials and the like.
S4, drying the garlic residues obtained in the step S1 by using vacuum drying equipment, drying the small-particle mashed garlic obtained in the step S2 by using spray drying equipment, and preparing the product in the step S3.
The process flow adopted in this example is shown in fig. 1.
Example 2
Example 1 a zero discharge process of garlic rinsing wastewater was implemented using the following garlic rinsing wastewater treatment apparatus.
The schematic structure of the garlic rinsing wastewater treatment device is shown in fig. 2.
The garlic rinsing wastewater treatment device comprises a main pipeline 1, a first pipeline 2, a second pipeline 3, a third pipeline 4, and vibrating screen filtering equipment, high-speed centrifugal equipment, concentrating equipment and drying equipment which are sequentially connected in series on the main pipeline 1.
The garlic rinsing wastewater enters the main pipeline 1 through an inlet of the main pipeline 1, is subjected to coarse filtration by a vibrating screen filtering device to obtain large-particle garlic residues, and is transmitted to a drying device for treatment through a first pipeline 2; the rinsing wastewater flowing out of the vibrating screen filtering equipment enters high-speed centrifugal equipment through a pipeline for centrifugal separation treatment, and the obtained centrifugal heavy liquid, namely small-particle mashed garlic, is transmitted to drying equipment for treatment through a second pipeline 3; the obtained centrifugal clear liquid continuously flows back to the main pipeline 1 and further flows to the concentration equipment, and the concentration equipment is utilized to further concentrate and separate the centrifugal clear liquid.
The inlet of the first pipeline 2 is connected with vibrating screen filtering equipment, the outlet of the first pipeline 2 is connected with drying equipment, the large-particle mashed garlic screened by the vibrating screen filtering equipment is conveyed to the drying equipment by the first pipeline 2 for drying treatment, so that mashed garlic is obtained, and the mashed garlic is recycled.
The inlet of the second pipeline 3 is connected with the high-speed centrifugal equipment, the outlet of the second pipeline 3 is connected with the drying equipment, the second pipeline 3 conveys the centrifugal heavy liquid separated by the high-speed centrifugal equipment to the drying equipment for drying treatment, and the centrifugal heavy liquid contains small-particle mashed garlic which can be made into mashed garlic and can also be used for extracting powder, allicin, polysaccharide mixture and the like.
The inlet of the third pipeline 4 is connected with the concentration equipment, the outlet of the third pipeline 4 is connected with the inlet of the main pipeline 1, the third pipeline 4 conveys clear water concentrated and separated by the reverse osmosis concentration equipment to the inlet of the main pipeline 1 to be mixed with the garlic rinsing wastewater, on one hand, rinsing wastewater is washed and diluted, on the other hand, circulating process treatment is realized, the effect of multiple concentration and filtration is achieved, and the zero emission standard is reached.
In addition, the garlic rinsing wastewater treatment device also comprises a fourth pipeline 5, wherein an inlet of the fourth pipeline 5 is connected with the ultrafiltration concentration equipment, an outlet of the fourth pipeline 5 is connected with the high-speed centrifugation equipment, and concentrated solution generated by the ultrafiltration concentration equipment is conveyed to the high-speed centrifugation equipment through the fourth pipeline 5.
In addition, the garlic rinsing wastewater treatment device further comprises a fifth pipeline 6, wherein an inlet of the fifth pipeline 6 is connected with the evaporation concentration equipment, an outlet of the fifth pipeline 6 is connected with the reverse osmosis concentration equipment, and evaporation condensate water generated by the evaporation concentration equipment is conveyed to the reverse osmosis concentration equipment through the fifth pipeline 6.
Further, the drying equipment comprises a first drying equipment and a second drying equipment, wherein the first drying equipment is connected with the concentrating equipment and the outlet of the second pipeline 3, and the second drying equipment is connected with the outlet of the first pipeline 2; the first drying equipment is spray drying equipment, the second drying equipment is freeze drying equipment or vacuum drying equipment, the spray drying equipment dries the concentrated solution with less particle impurities, the effect of extracting organic matters such as allicin, polysaccharide mixture, powder and the like is achieved, and the freeze drying equipment or the vacuum drying equipment dries the garlic paste with large particles, so that the effect of prolonging the storage time is achieved.
Further, garlic rinsing effluent treatment plant, still include the controller, the controller is connected with vibrating screen filter equipment, high-speed centrifugal equipment, concentrator, drying equipment, staff's accessible controller carries out flow operation, labour saving and time saving realizes automated processing, improves production efficiency.
Example 3
The cost accounting of the garlic rinsing wastewater treatment process is carried out.
(1)300m 3 Total investment of garlic rinsing waste water zero discharge process equipment
Figure BDA0004117184240000091
Figure BDA0004117184240000101
(2)300m 3 Operation cost of zero discharge process of garlic rinsing wastewater
Figure BDA0004117184240000102
(3)300m 3 Economic benefit of zero discharge process of garlic rinsing wastewater
Figure BDA0004117184240000103
Figure BDA0004117184240000111
From the economic accounting of the garlic rinsing wastewater treatment process provided by the invention, the garlic rinsing wastewater treatment process provided by the invention can be clearly known, only the equipment cost is required to be input once, the normal operation of the equipment is maintained, other extra cost is not required, the garlic rinsing wastewater treatment cost is greatly reduced, and the process provided by the invention realizes the automatic treatment of wastewater by controlling each equipment by adopting a controller, thereby saving the cost and improving the wastewater treatment efficiency; in addition, the process can realize the recycling of wastewater and the recovery of beneficial components of garlic in the wastewater simultaneously, thereby forming a new industry, improving economic benefit and completely realizing zero discharge of garlic rinsing wastewater.

Claims (10)

1. The zero discharge process of the garlic rinsing wastewater is characterized by comprising the following steps of:
s1, coarse filtration of garlic rinsing wastewater to obtain garlic residues with large particles and filtrate respectively;
s2, centrifuging the filtrate obtained after the filtering in the step S1 to obtain small-particle mashed garlic and centrifugal light liquid;
s3, treating the centrifugal light liquid obtained in the step S2 through a concentration system to obtain concentrated wastewater with higher concentration and clear water respectively;
wherein, the clear water is recycled and reused, and the concentrated wastewater with higher concentration is dried to prepare a product;
s4, drying the garlic residues with the particles obtained in the step S1 and the small-particle mashed garlic obtained in the step S2 to obtain the product.
2. The process for zero release of garlic rinsing wastewater according to claim 1, wherein in the step S1, the coarse filtration is performed by using a vibrating screen filter device, wherein the vibrating screen filter device is provided with a vibrating screen filter system, and the aperture of a filter screen in the vibrating screen filter system is 500 meshes.
3. The process for zero release of garlic rinsing wastewater according to claim 1, wherein in step S2, the filtrate obtained after the filtration in step S1 is centrifuged by using a high-speed disk centrifuge.
4. The process for zero release of garlic rinse wastewater as claimed in claim 1, wherein in the step S3, the concentration system comprises an ultrafiltration clarification device, a reverse osmosis concentration device and an evaporation concentration device, and the drying is performed by a spray drying device.
5. The zero release process of garlic rinsing wastewater according to claim 1, wherein in the step S3, the centrifugal light liquid obtained after the filtration in the step S2 is processed by a concentration system, and the specific process is as follows:
the centrifugal light liquid obtained after the filtration in the step S2 is firstly subjected to ultrafiltration by ultrafiltration clarification equipment and an ultrafiltration clarification system, on one hand, ultrafiltration concentrated liquid obtained after the ultrafiltration returns to the step S2 and repeats the operation, and on the other hand, the obtained ultrafiltration clarified liquid enters reverse osmosis concentration equipment and is subjected to reverse osmosis concentration by a reverse osmosis system;
wherein, the clear water after reverse osmosis concentration is returned to be used in the rinsing pretreatment process of garlic; and meanwhile, evaporating and concentrating the concentrated solution after reverse osmosis concentration by adopting an evaporating and concentrating device, returning the condensed water after evaporation and condensation to the reverse osmosis concentrating device, and drying the evaporated concentrated solution to prepare a product.
6. The process for zero release of wastewater from garlic rinsing according to claim 1, wherein the product in step S3 and step S4 is a powdery product containing garlic component.
7. A zero release process for garlic rinse wastewater as claimed in claim 1, comprising the steps of:
s1, adopting vibrating screen filtering equipment, and coarsely filtering the garlic rinsing wastewater by utilizing a vibrating screen filtering system with the aperture of a filter screen of 500 meshes to respectively obtain garlic residues and filtrate;
s2, centrifuging the filtrate obtained after the filtering in the step S1 by adopting a high-speed disc centrifuge to obtain small-particle mashed garlic and centrifugal light liquid;
s3, treating the centrifugal light liquid obtained after the filtration in the step S2 by a concentration system, wherein the specific steps are as follows:
ultrafiltering the light centrifugal liquid obtained after filtering in the step S2 by using an ultrafiltration concentration device and an ultrafiltration clarification system, wherein on one hand, the ultrafiltered concentrated liquid obtained after ultrafiltration returns to the step S2 and repeats the operation, and on the other hand, the obtained ultrafiltered clarified liquid enters a reverse osmosis concentration device and is subjected to reverse osmosis concentration by using the reverse osmosis concentration system;
wherein, the clear water after reverse osmosis concentration is returned to be used in the rinsing pretreatment process of garlic; simultaneously, evaporating and concentrating the concentrated solution after reverse osmosis concentration by adopting evaporating and concentrating equipment, returning the condensed water after evaporation and condensation to the reverse osmosis concentrating equipment, and preparing the product after spray drying the concentrated solution after evaporation;
s4, drying the garlic residues with the particles obtained in the step S1 and the small-particle mashed garlic obtained in the step S2, and preparing the garlic residues with the particles obtained in the step S2 into products.
8. The zero release process of garlic rinsing wastewater according to claim 1, wherein the zero release process of garlic rinsing wastewater is realized by using a garlic rinsing wastewater treatment device;
the garlic rinsing wastewater treatment device comprises: the device comprises a main pipeline (1), a first pipeline (2), a second pipeline (3), a third pipeline (4), and vibrating screen filtering equipment, high-speed centrifugal equipment, concentrating equipment and drying equipment which are sequentially connected in series on the main pipeline (1);
the inlet of the first pipeline (2) is connected with the vibrating screen filtering equipment, and the outlet of the first pipeline (2) is connected with the drying equipment;
the inlet of the second pipeline (3) is connected with the high-speed centrifugal equipment, and the outlet of the second pipeline (3) is connected with the drying equipment;
an inlet of the third pipeline (4) is connected with the concentration equipment, and an outlet of the third pipeline (4) is connected with an inlet of the main pipeline (1);
the vibrating screen filtering device is arranged at one inlet end of the main pipeline (1);
the concentration equipment comprises ultrafiltration concentration equipment, reverse osmosis concentration equipment and evaporation concentration equipment.
9. The process for zero release of garlic rinsing wastewater according to claim 1, wherein the process for zero release of garlic rinsing wastewater is realized by using a garlic rinsing wastewater treatment device;
the garlic rinsing wastewater treatment device also comprises a controller, wherein the controller is connected with the vibrating screen filtering equipment, the high-speed centrifugal equipment, the concentration equipment and the drying equipment.
10. The process for zero release of garlic rinsing wastewater according to claim 1, wherein the garlic rinsing wastewater treatment device is used for realizing the process for zero release of the garlic rinsing wastewater, wherein the garlic rinsing wastewater treatment device comprises a drying device, and the drying device comprises at least one of a vacuum drying device, a freeze drying device and a spray drying device.
CN202310222281.4A 2023-03-09 2023-03-09 Zero discharge process of garlic rinsing wastewater Pending CN116062948A (en)

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CN202310222281.4A CN116062948A (en) 2023-03-09 2023-03-09 Zero discharge process of garlic rinsing wastewater

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Application Number Priority Date Filing Date Title
CN202310222281.4A CN116062948A (en) 2023-03-09 2023-03-09 Zero discharge process of garlic rinsing wastewater

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