Wastewater treatment device for wine brewing enterprises

Abstract

The utility model discloses a wastewater treatment device for wine brewing enterprises, and relates to the technical field of wine brewing wastewater treatment. The device comprises a conditioning tank, the top of the conditioning tank is fixedly connected with a feeding pipeline, an outlet in the bottom of the conditioning tank is fixedly connected with an automatic valve through a pipeline, an outlet in the right side of the automatic valve is fixedly connected with a first conveying pump through a pipeline, and an output port in the right side of the first conveying pump is fixedly connected with solid-liquid separation equipment through a pipeline. A distillation tower is arranged on the right side of the solid-liquid separation equipment, an outlet of the solid-liquid separation equipment is fixedly connected with an inlet of the distillation tower through a pipeline, and an outlet in the bottom of the distillation tower is fixedly connected with a second conveying pump through a pipeline. According to the utility model, the high-concentration wastewater is recycled and processed into liquid fertilizer to be reused in agriculture, the effect is obvious, the material recycling is realized, the resource regeneration is realized, and the application of the liquid fertilizer can reduce the use amount of chemical fertilizer and assist the realization of dual carbon and chemical fertilizer zero growth targets.

Description

Technical Field

[0001] The utility model belongs to the technical field of brewing wastewater treatment, and particularly relates to a wastewater treatment device for brewing enterprises. Background Art

[0002] The treatment of high-concentration wastewater has always been a difficult problem in the brewing and environmental protection industries. High-concentration wastewater is the waste discharged during the white liquor brewing process. High-concentration wastewater includes: bottom pot water, cellar bottom water, etc. It is characterized by high COD and high ammonia nitrogen. When treated as industrial wastewater, it has high investment, high treatment cost, and it is very difficult to achieve up-to-standard discharge of the treated water, which restricts the development of brewing enterprises.

[0003] CN103992010A discloses a combined treatment process for distiller's grains and brewing wastewater. After reducing the ammonia nitrogen content through deammonification treatment, anaerobic fermentation is then carried out. The ammonia nitrogen content in the biogas slurry after anaerobic fermentation is still very high, which is difficult to treat, and the overall operating cost is high.

[0004] CN114853164B discloses a combined treatment method and treatment device for white liquor distiller's grains and high-concentration wastewater. The anaerobic digestion process is used to produce biogas for resource utilization. The COD and ammonia nitrogen contents in the biogas slurry after anaerobic digestion are still very high, and it is very difficult to achieve up-to-standard discharge. Moreover, due to the low nutrient content, its application as a fertilizer is also limited, resulting in unstable operation of the anaerobic digestion process and restricting the treatment capacity of the anaerobic digestion process.

[0005] In view of the above technical deficiencies, this patent proposes a resource utilization process suitable for high-concentration brewing wastewater, recovering the beneficial substances in the high-concentration wastewater, and using the remaining water for anaerobic digestion to produce biogas. The steam generated by the combustion of biogas is used in the previous-stage recovery process, which can not only realize the recycling of substances and create value, but also complete the treatment of high-concentration wastewater at a lower cost. Content of the Utility Model

[0006] The purpose of the utility model is to provide a wastewater treatment device for brewing enterprises. By recycling high-concentration wastewater and processing it into liquid fertilizer for reuse in agriculture, the effect is obvious, realizing the recycling of substances and the regeneration of resources. Its application can reduce the use of chemical fertilizers, contribute to the realization of the dual-carbon and zero-growth goals of chemical fertilizers, and solve the problems that when brewing wastewater is treated as industrial wastewater, it has high investment, high treatment cost, and it is very difficult to achieve up-to-standard discharge of the treated water, which restricts the development of brewing enterprises.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model relates to a wastewater treatment device for brewing enterprises, including a conditioning tank. A feed pipeline is fixedly connected to the top of the conditioning tank. The outlet at the bottom of the conditioning tank is fixedly connected to an automatic valve through a pipeline. The right outlet of the automatic valve is fixedly connected to a first transfer pump through a pipeline. The right output port of the first transfer pump is fixedly connected to a solid-liquid separation device through a pipeline.

[0009] Furthermore, a distillation column is arranged on the right side of the solid-liquid separation device. The outlet of the solid-liquid separation device is fixedly connected to the inlet of the distillation column through a pipeline. The outlet at the bottom of the distillation column is fixedly connected to a second transfer pump through a pipeline. The right output port of the second transfer pump is fixedly connected to a finished product storage tank through a pipeline.

[0010] Furthermore, a condenser is arranged on the right side of the distillation column. The outlet at the top of the distillation column is fixedly connected to the left inlet of the condenser through a pipeline. The right outlet of the condenser is fixedly connected to an anaerobic fermentation tank through a pipeline. The right side of the anaerobic fermentation tank is fixedly connected to a biogas boiler through a pipeline.

[0011] Furthermore, a third transfer pump is arranged on the right side of the anaerobic fermentation tank. The lower right side of the anaerobic fermentation tank is fixedly connected to the left side of the third transfer pump through a pipeline. The right output port of the third transfer pump is fixedly connected to a sewage treatment facility through a pipeline. The right side of the sewage treatment facility is fixedly connected to a discharge pipe.

[0012] Furthermore, the right outlet of the biogas boiler is connected to the left side of the distillation column through a pipeline. Stirring paddles are arranged inside both the conditioning tank and the finished product storage tank.

[0013] The utility model has the following beneficial effects:

[0014] 1. After the high-concentration wastewater is recovered by the utility model and processed into liquid fertilizer for reuse in agriculture, the effect is obvious, realizing the recycling of substances and the regeneration of resources. Its application can reduce the usage amount of chemical fertilizers, contributing to the realization of the dual-carbon and zero-growth goals of chemical fertilizers.

[0015] 2. The substances containing nitrogen in the utility model are all retained in the concentrated liquid in the form of organic nitrogen, realizing the recycling of resources. The ammonia nitrogen and total nitrogen contents in the water separated from the distillation column are extremely low, less than 10 mg / L, significantly lower than the ammonia nitrogen content of 1500 mg / L in conventional anaerobic digestion biogas slurry, and the water quality is easier to treat.

[0016] 3. The remaining wastewater in the anaerobic fermentation tank after recovering amino acid polypeptides in the utility model undergoes anaerobic digestion to produce biogas. The biogas is used to generate steam by the biogas boiler and reused as a heat source for the distillation column 5, realizing self-circulation. This not only reduces the COD and other indicators of the wastewater but also realizes the recovery of energy.

[0017] 4. The utility model enables the materials entering the anaerobic fermentation tank to be clear and transparent liquid with extremely low SS content. The amount of biogas residue generated after anaerobic digestion is far lower than that of other anaerobic digestion processes. The total nitrogen content is low, the ammonia nitrogen content after anaerobic digestion is low, and the biogas slurry is easy to treat, completely solving the problems of difficult separation of biogas slurry and biogas residue and difficult treatment of biogas slurry after conventional anaerobic digestion, and realizing the resource utilization and up-to-standard discharge of high-concentration wastewater.

[0018] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the wastewater treatment structure of the utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Conditioning tank; 2. Automatic valve; 3. Delivery pump I; 4. Solid-liquid separation equipment; 5. Distillation tower; 6. Delivery pump II; 7. Product storage tank; 8. Condenser; 9. Anaerobic fermentation tank; 10. Biogas boiler; 11. Delivery pump III; 12. Sewage treatment facility. Detailed Embodiment

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the utility model.

[0024] Please refer to Figure 1 As shown, the utility model is a wastewater treatment device for brewing enterprises, including a conditioning tank 1. The top of the conditioning tank 1 is fixedly connected with a feed pipeline. The bottom outlet of the conditioning tank 1 is fixedly connected with an automatic valve 2 through a pipeline. The right outlet of the automatic valve 2 is fixedly connected with a delivery pump I 3 through a pipeline. The right output port of the delivery pump I 3 is fixedly connected with a solid-liquid separation equipment 4 through a pipeline. The utility model recovers high-concentration wastewater and processes it into liquid fertilizer for reuse in agriculture, with obvious effects, realizing material recycling and resource regeneration. Its application can reduce the use of chemical fertilizers and contribute to the realization of the dual-carbon and zero-growth goals of chemical fertilizers.

[0025] A distillation column 5 is provided on the right side of the solid-liquid separation device 4. The outlet of the solid-liquid separation device 4 is fixedly connected to the inlet of the distillation column 5 through a pipeline. The bottom outlet of the distillation column 5 is fixedly connected with a second delivery pump 6 through a pipeline. The right outlet of the second delivery pump 6 is fixedly connected with a finished product storage tank 7 through a pipeline. This utility model retains substances containing nitrogen in the nature of organic nitrogen in the concentrated liquid, realizing resource recycling. The ammonia nitrogen and total nitrogen contents in the water separated from the distillation column 5 are extremely low, less than 10 mg / L, significantly lower than the ammonia nitrogen content of 1500 mg / L in conventional anaerobic digestion biogas slurry, and the water quality is easier to treat.

[0026] A condenser 8 is provided on the right side of the distillation column 5. The top outlet of the distillation column 5 is fixedly connected to the left inlet of the condenser 8 through a pipeline. The right outlet of the condenser 8 is fixedly connected with an anaerobic fermentation tank 9 through a pipeline. The right side of the anaerobic fermentation tank 9 is fixedly connected with a biogas boiler 10 through a pipeline. This utility model recovers biogas generated by anaerobic digestion of the remaining wastewater in the anaerobic fermentation tank 9 after amino acid polypeptide is recovered, and generates steam through the biogas boiler 10 and recycles it to the distillation column 5 as a heat source, realizing self-circulation, which not only reduces indicators such as COD of the wastewater but also realizes energy recovery.

[0027] A third delivery pump 11 is provided on the right side of the anaerobic fermentation tank 9. The lower right side of the anaerobic fermentation tank 9 is fixedly connected to the left side of the third delivery pump 11 through a pipeline. The right outlet of the third delivery pump 11 is fixedly connected with a sewage treatment facility 12 through a pipeline. The right side of the sewage treatment facility 12 is fixedly connected with a discharge pipe. This utility model makes the material entering the anaerobic fermentation tank 9 be a clear and transparent liquid with an extremely low SS content. The amount of biogas residue generated after anaerobic digestion is far lower than that of other anaerobic digestion processes. The total nitrogen content is low, the ammonia nitrogen content after anaerobic digestion is low, and the biogas slurry is easy to treat, completely solving the problems of difficult separation of biogas slurry and biogas residue and difficult treatment of biogas slurry after conventional anaerobic digestion, realizing the resource utilization and up-to-standard discharge of high-concentration wastewater. The right outlet of the biogas boiler 10 is connected to the left side of the distillation column 5 through a pipeline. Stirring paddles are provided inside both the conditioning tank 1 and the finished product storage tank 7.

[0028] A specific application of this embodiment is:

[0029] The high-concentration wastewater first enters the conditioning tank 1, where chemicals (lime, calcium hydroxide, calcium carbonate) are added. Under stirring in the conditioning tank 1, calcium acetate precipitates are formed with acetic acid in the wastewater, and at the same time, some impurities in the wastewater are flocculated. Then, the precipitates are removed by a centrifuge. The liquid after removing the impurities passes through an automatic valve 2 and is then transported into a solid-liquid separation device 4 by a transfer pump 3. The separated liquid is transported into a distillation column 5. The light components in the wastewater enter a condenser 8 along with the steam and are condensed into a liquid state. Substances such as amino acids, polysaccharides, and proteins that are not easily volatilized remain in the distillation column 5 as a concentrated solution. The concentrated solution is transported to a finished product storage tank 7 by a transfer pump 6. Stirring is started in the finished product storage tank 7. Using the concentrated solution as a mother liquor, trace elements or macro elements, humic acid and other materials are added to make its various indicators meet the relevant water-soluble fertilizer standards of the Ministry of Agriculture, and it is processed into a liquid water-soluble fertilizer for market sales to generate greater value. The materials entering the condenser 8 are condensed and then enter an anaerobic fermentation tank 9, where biogas is generated through anaerobic digestion. The biogas passes through a biogas boiler 10 to generate steam, which is recycled to the distillation column 5 as the heat source of the distiller. The biogas slurry remaining after anaerobic digestion is transported into a sewage treatment facility 12 by a transfer pump 11, and the sewage is discharged up to standard after treatment.

[0030] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not elaborate all the details, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the utility model, so that those skilled in the relevant technical field can well understand and utilize the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A wastewater treatment device for a brewing enterprise, comprising a conditioning tank (1), the top of which is fixedly connected with a feed pipeline, characterized in that: The bottom outlet of the conditioning tank (1) is fixedly connected to an automatic valve (2) via a pipeline, the right side outlet of the automatic valve (2) is fixedly connected to a delivery pump (3) via a pipeline, and the right side outlet of the delivery pump (3) is fixedly connected to a solid-liquid separation device (4) via a pipeline; A distillation tower (5) is arranged on the right side of the solid-liquid separation device (4); the outlet of the solid-liquid separation device (4) is fixedly connected to the inlet of the distillation tower (5) via a pipeline; the bottom outlet of the distillation tower (5) is fixedly connected to a delivery pump (6) via a pipeline; the right side outlet of the delivery pump (6) is fixedly connected to a finished product storage tank (7) via a pipeline; A condenser (8) is arranged on the right side of the distillation tower (5); the top outlet of the distillation tower (5) is fixedly connected to the left inlet of the condenser (8) through a pipeline; the right outlet of the condenser (8) is fixedly connected to an anaerobic fermentation tank (9) through a pipeline; and the right side of the anaerobic fermentation tank (9) is fixedly connected to a biogas boiler (10) through a pipeline; A delivery pump three (11) is arranged on the right side of the anaerobic fermentation tank (9); the lower right side of the anaerobic fermentation tank (9) is fixedly connected to the left side of the delivery pump three (11) through a pipeline; the right side outlet of the delivery pump three (11) is fixedly connected to a sewage treatment facility (12) through a pipeline; and the right side of the sewage treatment facility (12) is fixedly connected to a discharge pipe.

2. A wastewater treatment device for a brewing enterprise according to claim 1, characterized in that: The right outlet of the biogas boiler (10) is connected to the left side of the distillation tower (5) through a pipeline, and stirring paddles are arranged inside the conditioning tank (1) and the finished product storage tank (7).

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