Waste yeast treatment system for beer wastewater

Abstract

The utility model discloses a waste yeast treatment system for beer wastewater, which relates to the technical field of beer wastewater treatment and comprises a waste yeast storage tank, a waste yeast supernatant storage tank, an adjusting tank, a delivery pump and a metering pump. An inlet pipe of the delivery pump is connected with the waste yeast storage tank, and an outlet pipe of the delivery pump is connected with the waste yeast supernatant storage tank; an inlet pipe of the metering pump is connected with the waste yeast supernatant storage tank, and an outlet pipe of the metering pump is connected with the adjusting tank. According to the embodiment of the utility model, efficient removal of pollutants and resource recovery of organic matters can be realized, the influence of irregular discharge of beer wastewater and waste yeast liquid and system impact caused by large water quality fluctuation can be resisted, and the stability of a treatment system and full resource recovery benefits are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to beer wastewater treatment technical field especially relates to a beer wastewater's waste yeast processing system. BACKGROUND

[0002] Waste yeast is a by-product in the beer brewing process. In the production process of beer, yeast fermentation is the key step to convert sugar into alcohol. In the fermentation stage, yeast converts maltose into alcohol, and after completing this task, yeast will precipitate at the bottom of the tank to form waste yeast. Waste yeast contains rich nutrients such as protein, amino acid, nucleic acid, etc., so it has high recycling and utilization value. Through proper treatment and recycling, waste yeast can be used for feed, fertilizer and other purposes, which can not only reduce environmental pollution, but also create economy. Therefore, general beer production enterprises will try to sell excess yeast, which can not only reduce the difficulty of sewage treatment, but also increase the economic benefit of enterprises. However, in actual production, the concentration of waste yeast often does not meet the requirements of yeast sales, and most enterprises will directly discharge it to the wastewater treatment system.

[0003] In the brewing process of beer wastewater, the physicochemical properties of wastewater generated in different process sections are quite different. The wastewater in the saccharification and fermentation process is mainly discharged intermittently, while the filling and bottle washing process is relatively continuous. In addition, beer production often has the characteristics of off-season and peak season, and the differences in drainage timing and physicochemical properties of different processes bring great challenges to the stable operation of beer wastewater treatment process.

[0004] Waste yeast liquid contains rich organic matter resources and has excellent biodegradability, which has great potential for resource and energy through biological transformation. Considering the intermittent and seasonal characteristics of beer wastewater discharge and production, how to achieve efficient removal of pollutants and resource recovery of organic matter while resisting the impact of irregular discharge of beer wastewater and waste yeast liquid and large water quality fluctuations, ensuring the stability of the treatment system and the full benefit of resource recovery, has become a technical problem that needs to be solved in the field. SUMMARY

[0005] The utility model discloses a waste yeast processing system of beer wastewater, which aims to solve at least one technical problem in the above background technology.

[0006] In order to solve the above problems, the utility model embodiment proposes a kind of waste yeast treatment system of beer wastewater, including waste yeast storage tank, waste yeast supernatant storage tank, adjusting pool, delivery pump and metering pump;The inlet pipe of the delivery pump is connected with the waste yeast storage tank, and the outlet pipe of the delivery pump is connected with the waste yeast supernatant storage tank;The inlet pipe of the metering pump is connected with the waste yeast supernatant storage tank, and the outlet pipe of the metering pump is connected with the adjusting pool;Wherein, the waste yeast storage tank is used to store waste yeast liquid and waste lye, the delivery pump is used to deliver waste yeast supernatant in the waste yeast storage tank to the waste yeast supernatant storage tank, and the metering pump is used to deliver waste yeast supernatant in the waste yeast supernatant storage tank to the adjusting pool.

[0007] Further technical solutions are that the waste yeast storage tank is provided with a waste yeast inlet and a waste lye inlet, and the waste yeast inlet and the waste lye inlet are arranged on the upper side of the waste yeast storage tank.

[0008] Further technical solutions are that the waste yeast storage tank is provided with a stirring device, and the stirring device is arranged on the bottom side of the waste yeast storage tank.

[0009] Further technical solutions are that the waste yeast storage tank is provided with a first waste yeast residue outlet, the first waste yeast residue outlet is arranged on the bottom side of the waste yeast storage tank, and the first waste yeast residue outlet is provided with a transparent pipeline.

[0010] The waste yeast supernatant storage tank is provided with a second waste yeast residue outlet, and the second waste yeast residue outlet is arranged on the bottom side of the waste yeast supernatant storage tank.

[0011] Further technical solutions are that the waste yeast storage tank is provided with a first liquid level detection device, and the first liquid level detection device is arranged on the upper side of the waste yeast storage tank.

[0012] Further technical solutions are that the waste yeast supernatant storage tank is provided with a second liquid level detection device, and the second liquid level detection device is arranged on the upper side of the waste yeast supernatant storage tank.

[0013] Further technical solutions are that the outlet pipe of the delivery pump is higher than the waste yeast storage tank, and the outlet pipe of the metering pump is higher than the waste yeast supernatant storage tank.

[0014] Further technical solutions are that the outlet pipe of the metering pump is connected with the adjusting pool through the water distribution facility.

[0015] The water distribution facility includes a horizontal pipeline and a plurality of longitudinal pipelines connected perpendicularly to the horizontal pipeline, the horizontal pipeline is connected with the outlet pipe of the metering pump, and the longitudinal pipelines extend into the adjusting pool.

[0016] Further technical solutions thereof are further comprising a COD detector, and the COD detector is connected with the adjusting tank.

[0017] Further technical solutions thereof are further comprising a controller, and the COD detector, the delivery pump, the metering pump, the first liquid level detection device and the second liquid level detection device are all connected with the controller.

[0018] Compared with the prior art, the technical effects that can be achieved by the embodiments of the present application include:

[0019] The technical scheme of the embodiment of the present application designs a waste yeast and waste alkali treatment system, which realizes waste yeast sedimentation recovery, adds high-concentration waste yeast liquid to a water treatment system (adjusting tank), ensures the COD concentration of the influent, and on one hand makes the anaerobic system of the water treatment more stable, thereby improving the biogas yield, converting the biogas into steam for reuse, and realizing maximum resource recovery.

[0020] On the other hand, in the slack season, the production of brewing wastewater is small, and the anaerobic system and the aerobic system in the adjusting tank will lead to phenomena such as disintegration of anaerobic granular sludge and inactivation of aerobic activated sludge under long-term low pollution load. At this time, the treated waste yeast in the waste yeast supernatant storage tank can be added to the sewage treatment system to improve the pollution load in the system and ensure the stability of the activated sludge performance of the anaerobic system and the aerobic system.

[0021] It can be seen that by setting up the waste yeast supernatant storage tank, the delivery amount of the yeast supernatant can be better controlled, thereby resisting the impact of the irregular discharge of beer wastewater and waste yeast liquid and the great water quality fluctuation on the system. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 A structure diagram of a waste yeast treatment system for beer wastewater is provided for the embodiments of the present application.

[0024] Reference signs

[0025] The waste yeast storage tank 10, the waste yeast supernatant storage tank 20, the adjusting tank 30, the conveying pump 40, the metering pump 50, the water distribution facility 60, the COD detector 70, the controller 80, the waste yeast inlet 11, the waste alkali inlet 12, the stirring device 13, the first waste yeast residue outlet 14, the transparent pipeline 15, the first liquid level detection device 16, the second liquid level detection device 21, the second waste yeast residue outlet 22, the transverse pipeline 61, and the longitudinal pipeline 62. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and similar components are denoted by similar reference numerals in the drawings. Obviously, the embodiments to be described are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0027] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] It should also be understood that the terms used in the specification of the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. As used in the specification of the embodiments of the present application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms, unless the context clearly indicates otherwise.

[0029] Referring to Figure 1 The embodiments of the present application provide a waste yeast treatment system for beer wastewater, which comprises a waste yeast storage tank 10, a waste yeast supernatant storage tank 20, an adjusting tank 30, a conveying pump 40, and a metering pump 50. The specific structure is as follows:

[0030] The waste yeast storage tank 10 is used for storing waste yeast liquid and waste alkali liquid. The waste yeast liquid and the waste alkali liquid are waste water generated in the beer production process.

[0031] The inlet pipe of the conveying pump 40 is connected with the waste yeast storage tank 10, and the outlet pipe of the conveying pump 40 is connected with the waste yeast supernatant storage tank 20. The conveying pump 40 is used for conveying the waste yeast supernatant in the waste yeast storage tank 10 to the waste yeast supernatant storage tank 20.

[0032] The inlet pipe of the metering pump 50 is connected to the waste yeast supernatant storage tank 20, and the outlet pipe of the metering pump 50 is connected to the equalization tank 30. The metering pump 50 is used to transport the waste yeast supernatant in the waste yeast supernatant storage tank 20 to the equalization tank 30. The metering pump 50 can accurately measure the amount of waste yeast supernatant transported, thereby achieving precise quantitative control of wastewater treatment.

[0033] In this embodiment of the invention, the outlet pipe of the transfer pump 40 is higher than that of the waste yeast storage tank 10 to prevent gravity flow due to liquid level difference after the transfer pump 40 stops. Similarly, the outlet pipe of the metering pump 50 is higher than that of the waste yeast supernatant storage tank 20 to prevent gravity flow due to liquid level difference after the metering pump 50 stops.

[0034] The technical solution of this utility model embodiment is designed with a waste yeast and waste alkali treatment system. While realizing the sedimentation and recovery of waste yeast, it is used to add high concentrations of waste yeast liquid to the water treatment system (regulation tank 30), ensuring the COD concentration of the influent. On the one hand, it can make the anaerobic system of water treatment more stable, thereby improving the biogas production rate. The biogas is converted into steam for reuse, realizing the maximum resource recovery.

[0035] On the other hand, during the off-season, the amount of brewing wastewater is small. Under long-term low pollution loads, the anaerobic and aerobic systems in the equalization tank 30 may experience phenomena such as disintegration of anaerobic granular sludge and deactivation of aerobic activated sludge. At this time, the treated waste yeast in the waste yeast supernatant storage tank 20 can be added to the wastewater treatment system to increase the pollution load in the system and ensure the stability of the activated sludge performance in the anaerobic and aerobic systems.

[0036] It is evident that by setting up a waste yeast supernatant storage tank 20, the amount of yeast supernatant transported can be better controlled, thereby resisting the impact of irregular discharge of beer wastewater and waste yeast liquid and large fluctuations in water quality on the system.

[0037] Furthermore, in some embodiments, the waste yeast storage tank 10 is provided with a waste yeast inlet 11 and a waste alkali inlet 12, both of which are located on the upper side of the waste yeast storage tank 10. The waste yeast inlet 11 is used to transport waste yeast into the waste yeast storage tank 10, and the waste alkali inlet 12 is used to transport waste alkali into the waste yeast storage tank 10. It is understood that the waste yeast inlet 11 and the waste alkali inlet 12 are designed to be openable / closable.

[0038] Furthermore, the waste yeast storage tank 10 is equipped with a stirring device 13, which is located on the bottom side of the waste yeast storage tank 10. The stirring device 13 can specifically be an air stirring tube. The stirring device 13 can effectively and thoroughly stir the liquid in the waste yeast storage tank 10.

[0039] Furthermore, the waste yeast storage tank 10 is provided with a first waste yeast residue outlet 14, which is located on the bottom side of the waste yeast storage tank 10 and has a transparent pipe 15. The first waste yeast residue outlet 14 is used to discharge the waste yeast residue inside the waste yeast storage tank 10. The transparent pipe 15 may be made of, for example, PVC or glass, and is used to observe whether the waste yeast residue has been completely discharged. Understandably, the first waste yeast residue outlet 14 is designed to be openable / closable.

[0040] Furthermore, the waste yeast supernatant storage tank 20 is provided with a second waste yeast residue outlet 22, which is located on the bottom side of the waste yeast supernatant storage tank 20. The second waste yeast residue outlet 22 is used to discharge the waste yeast residue in the waste yeast supernatant storage tank 20. Understandably, the second waste yeast residue outlet 2214 is designed to be openable / closeable.

[0041] Furthermore, the waste yeast storage tank 10 is equipped with a first liquid level detection device 16, which is located on the upper side of the waste yeast storage tank 10. The first liquid level detection device 16 is used to detect the liquid level in the waste yeast storage tank 10. Three liquid levels are set in the waste yeast storage tank 10: the pump start level, the pump stop level, and the maximum liquid level. When the liquid level is at the pump start level, the transfer pump 40 is started to deliver waste yeast supernatant to the waste yeast supernatant storage tank 20; when the liquid level is at the pump stop level, the transfer pump 40 is turned off, stopping the delivery of waste yeast supernatant to the waste yeast supernatant storage tank 20.

[0042] Furthermore, the waste yeast supernatant storage tank 20 is equipped with a second liquid level detection device 21, which is located on the upper side of the waste yeast supernatant storage tank 20. The second liquid level detection device 21 is used to detect the liquid level of the waste yeast supernatant storage tank 20.

[0043] Furthermore, the waste yeast treatment system for beer wastewater also includes a water distribution facility 60, through which the outlet pipe of the metering pump 50 is connected to the equalization tank 30. The water distribution facility 60 includes a horizontal pipe 61 and multiple vertical pipes 62 perpendicularly connected to the horizontal pipe 61. The horizontal pipe 61 is connected to the outlet pipe of the metering pump 50, and the vertical pipes 62 extend into the equalization tank 30. The horizontal pipe 61 must be installed horizontally, while the vertical pipes 62 are installed vertically.

[0044] In this invention, the regulating tank 30 is not equipped with a stirring device; the stirring of the liquid in the regulating tank 30 is achieved through the water distribution device 60.

[0045] Furthermore, the waste yeast treatment system for beer wastewater also includes a COD detector 70, which is connected to the equalization tank 30. The COD detector 70 is used to monitor the COD concentration of the liquid in the equalization tank 30 in real time. COD stands for Chemical Oxygen Demand.

[0046] Furthermore, the waste yeast treatment system for beer wastewater also includes a controller 80, and the COD detector 70, the transfer pump 40, the metering pump 50, the first liquid level detection device 16, and the second liquid level detection device 21 are all connected to the controller 80.

[0047] In this invention, the COD detector 70 samples from one side of the equalization tank 30 to monitor the COD concentration within the tank, thereby controlling the addition of yeast liquid. The COD detector 70 can continuously monitor the COD value within the equalization tank 30. When the COD value is below 2000 mg / L, the controller 80 activates the metering pump 50 in the waste yeast supernatant storage tank 20, slowly adding waste yeast liquid into the equalization tank 30. Addition stops when the COD value exceeds 3000 mg / L. This adjustment method makes the influent fluctuations of the water treatment system controllable, ensuring stable and compliant effluent. This solves the problem of large fluctuations in beer wastewater quality and irregular discharge, leading to instability in the water treatment process system. The COD control value (2000-3000 mg / L) is not fixed; different plants can set different control values ​​according to their specific circumstances.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0054] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0055] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A waste yeast treatment system for beer wastewater, characterized in that, The system includes a waste yeast storage tank, a waste yeast supernatant storage tank, an equalization tank, a transfer pump, and a metering pump. The inlet pipe of the transfer pump is connected to the waste yeast storage tank, and the outlet pipe of the transfer pump is connected to the waste yeast supernatant storage tank. The inlet pipe of the metering pump is connected to the waste yeast supernatant storage tank, and the outlet pipe of the metering pump is connected to the equalization tank. The waste yeast storage tank is used to store waste yeast liquid and waste alkali liquid. The transfer pump is used to transfer the waste yeast supernatant from the waste yeast storage tank to the waste yeast supernatant storage tank, and the metering pump is used to transfer the waste yeast supernatant from the waste yeast supernatant storage tank to the equalization tank.

2. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, The waste yeast storage tank is equipped with a waste yeast inlet and a waste alkali inlet, both of which are located on the upper side of the waste yeast storage tank.

3. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, The waste yeast storage tank is equipped with a stirring device, which is located on the bottom side of the waste yeast storage tank.

4. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, The waste yeast storage tank is provided with a first waste yeast residue outlet, which is located on the bottom side of the waste yeast storage tank and is provided with a transparent pipe. The waste yeast supernatant storage tank is provided with a second waste yeast residue outlet, which is located on the bottom side of the waste yeast supernatant storage tank.

5. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, The waste yeast storage tank is equipped with a first liquid level detection device, which is located on the upper side of the waste yeast storage tank.

6. The waste yeast treatment system for beer wastewater according to claim 5, characterized in that, The waste yeast supernatant storage tank is equipped with a second liquid level detection device, which is located on the upper side of the waste yeast supernatant storage tank.

7. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, The outlet pipe of the delivery pump is higher than the waste yeast storage tank; the outlet pipe of the metering pump is higher than the waste yeast supernatant storage tank.

8. The waste yeast treatment system for beer wastewater according to claim 1, characterized in that, It also includes a water distribution facility, through which the outlet pipe of the metering pump is connected to the regulating tank; The water distribution facility includes a horizontal pipe and a plurality of vertical pipes connected perpendicularly to the horizontal pipe. The horizontal pipe is connected to the outlet pipe of the metering pump, and the vertical pipes extend into the regulating tank.

9. The waste yeast treatment system for beer wastewater according to claim 6, characterized in that, It also includes a COD detector, which is connected to the conditioning tank.

10. The waste yeast treatment system for beer wastewater according to claim 9, characterized in that, It also includes a controller, and the COD detector, the delivery pump, the metering pump, the first liquid level detection device, and the second liquid level detection device are all connected to the controller.

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