An apparatus and method for improving the dryness of brewer's lees

Abstract

This application relates to an apparatus and method for improving the dryness of brewer's lees, belonging to the field of feed processing technology. The apparatus, used for solid-liquid separation of brewer's lees, includes a base with opposing first and second end faces. The base has a chamber, and a first perforated filter hole communicating with the chamber is formed on the first end face. A support assembly is disposed on the first end face of the base. A filter assembly includes a first filter screen component and a second filter screen component, wherein the first filter screen component is laid on the first end face, and the second filter screen component covers the support assembly; the second filter screen component and the support assembly together form a pipe communicating with the chamber. This apparatus can automatically separate the solid and liquid of brewer's lees through the filter assembly and collect water into the chamber of the base, thereby avoiding water pollution caused by water leakage from the brewer's lees.

Description

Technical Field

[0001] This application relates to the field of feed processing technology, and in particular to an apparatus and method for improving the dryness of brewer's lees. Background Technology

[0002] Beer lees, a major byproduct of the beer industry, is the residue left after barley is fermented and soluble carbohydrates are extracted. Beer lees are rich in protein, amino acids, and trace elements. Adding fresh beer lees to dairy cow diets to replace part of corn silage, soybean meal, and wheat bran can increase crude protein content and significantly increase daily milk production, milk fat content, and total dry matter content of milk.

[0003] In practical applications, due to the gaps between the particles of beer lees, water forms relatively large droplets within them and continuously drains out of the beer lees under the influence of gravity. The nutrient-rich water flows everywhere, easily causing water pollution. Furthermore, this water is directly exposed to the air, making it prone to rancidity, and the cleaning work is quite cumbersome. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this application provides a device for improving the dryness of beer lees, which can automatically separate the solid and liquid of beer lees through the filter components and collect the water into the chamber of the base, thereby avoiding water pollution caused by the leakage of water from the beer lees.

[0005] The first aspect of this application provides an apparatus for improving the dryness of brewer's lees, comprising:

[0006] The base has a first end face and a second end face that are opposite to each other. The base has a cavity and a first perforated filter hole that communicates with the cavity is opened on the first end face.

[0007] A support assembly is disposed on the first end face of the base;

[0008] A filter assembly, comprising a first filter element and a second filter element, wherein the first filter element is laid on the first end face and the second filter element is covered on the support assembly;

[0009] The second filter component and the support assembly together form a pipe communicating with the chamber.

[0010] In some embodiments, the support assembly includes: a plurality of column frames arranged side by side on a first end face of the base, the side walls of the column frames having second perforated filter holes, and the outer walls of the column frames being detachably covered with the second filter screen component.

[0011] In some embodiments, the device further includes a cylindrical body, and a plurality of the cylindrical bodies are in communication with the columnar frame along the radial direction of the columnar frame. One end of the cylindrical body extends outward away from the base, and the sidewall of the cylindrical body has a third perforated filter hole. The outer wall of the cylindrical body is detachably covered with the second filter screen component.

[0012] In some embodiments, the cylinders are spaced apart along the length and circumferential directions of the outer wall of the column frame, with one end of the cylinders being away from the column frame.

[0013] In some embodiments, the first filter component includes a first filter cloth and a magnetic buckle, the magnetic buckle being disposed at the edge of the first filter cloth, and the first filter cloth being fixed to the base by the magnetic buckle.

[0014] In some embodiments, the second filter component includes a second filter cloth and a Velcro fastener, wherein the second filter cloth is bent into a ring shape and is fixed to the support assembly by the Velcro fastener.

[0015] In some embodiments, the base includes: a base plate and several reinforcing bars; a plate body is sealed and welded to the edge of the base plate; a plurality of support cylinders are provided on the base plate; a liquid outlet hole is provided at one end of the support cylinder connected to the base plate; and a boss is provided at the end of the support cylinder away from the base plate.

[0016] The plurality of ribs overlap the base plate via the boss, and adjacent ribs form the first hollow filter hole;

[0017] The support sleeve is fitted with the bracket assembly.

[0018] In some embodiments, an air pressure through hole is provided on one side of the base;

[0019] A drain valve is also provided at the bottom of the base;

[0020] The device also includes a vacuum pump and a water collection tank. The vacuum pump performs filtration through the air pressure through-hole. The water collection tank is connected to the drain valve.

[0021] The technical solution provided in the first aspect of this application has the following beneficial effects:

[0022] This application provides an apparatus for improving the dryness of brewer's lees, comprising a base, a support assembly, and a filter assembly. A first filter screen is laid on the first end face of the base, and a second filter screen is wrapped around the support assembly, forming a filtration system. When a truck unloads, the brewer's lees are poured onto the apparatus. The filtration process is as follows: On one hand, the moisture in the brewer's lees condenses into droplets due to the gaps between the particles and permeates to the bottom of the lees pile under gravity. When it flows to the first filter screen, it is filtered and enters the chamber of the base. On the other hand, the brewer's lees fill the periphery of the support assembly. Due to the pressure inside the accumulated brewer's lees, the pressure in the pipe formed by the brewer's lees and the second filter screen is inconsistent. Water permeates from the brewer's lees into the pipe and collects in the chamber, effectively reducing the moisture content of the brewer's lees.

[0023] A second aspect of this application provides a method for improving the dryness of brewer's lees, comprising the following steps:

[0024] (1) Add fiber feed to brewer's lees for conditioning;

[0025] (2) The conditioned beer lees are laid on the apparatus as described in the first aspect and the feasible method of the first aspect;

[0026] (3) Start the vacuum pump for filtration. After filtration is completed, open the drain valve and store the filtration wastewater in the collection tank for harmless treatment.

[0027] In some embodiments, the mass fractions of the brewer's lees and the fiber feed are (80%–88%) and (12%–20%), respectively.

[0028] The technical solution provided in the second aspect of this application has the following beneficial effects:

[0029] The method provided in this application firstly adjusts the nutritional ratio of brewer's lees by adding dry fiber feed to make it more suitable for feeding dairy cows. After mixing and conditioning the brewer's lees and fiber feed, it is laid on the device. Solid-liquid separation is achieved by using the first filter screen component and the second filter screen component. The brewer's lees are then dehydrated by suction filtration to quickly reduce the water content of the brewer's lees. Attached Figure Description

[0030] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0031] Figure 1 This is a schematic diagram of the structure of the device shown in the embodiments of this application;

[0032] Figure 2 This is an exploded schematic diagram of the device shown in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the support cylinder structure shown in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the support assembly shown in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the structure of the first filter component shown in an embodiment of this application. Attached Figure Description

[0037] 1. Base; 11. Bottom plate; 12. Rib; 13. Plate; 14. Support cylinder; 140. Liquid outlet; 15. Boss; 16. Air pressure through hole;

[0038] 21. Columnar frame; 210. Second perforated filter hole;

[0039] 3. Filter assembly; 31. First filter screen component; 310. First filter cloth; 311. Magnetic buckle; 32. Second filter screen component. Detailed Implementation

[0040] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0041] In practical applications, due to the gaps between the particles of beer lees, water forms relatively large droplets within them and continuously drains out of the beer lees under the influence of gravity. The nutrient-rich water flows everywhere, easily causing water pollution. Furthermore, this water is directly exposed to the air, making it prone to rancidity, and the cleaning work is quite cumbersome.

[0042] To address the aforementioned issues, this application provides an apparatus capable of separating solids and liquids from beer lees using a filtration component and collecting the water into a chamber in the base, thereby preventing the water from flowing out of the beer lees and causing water pollution risks.

[0043] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] Please see Figure 1The apparatus for improving the dryness of brewer's lees provided in this application includes:

[0046] The base 1 has a first end face and a second end face that are opposite to each other. The base 1 has a cavity and a first hollow filter hole that communicates with the cavity is opened on the first end face.

[0047] The support assembly is disposed on the first end face of the base 1;

[0048] The filter assembly 3 includes a first filter screen component 31 and a second filter screen component 32, wherein the first filter screen component 31 is laid on the first end face, and the second filter screen component 32 covers the support assembly;

[0049] The second filter component 32 and the support assembly together form a pipe communicating with the chamber;

[0050] When the beer lees cover the device, water can be filtered through the filter assembly 3.

[0051] In practical applications, the quantity of brewer's lees received is often large. For ease of management, it is usually dumped directly onto the floor of the brewery and transported using a wheelbarrow or forklift. The device in this embodiment is fixedly installed on the floor of the brewery. Trucks or other transport equipment deliver the brewer's lees into the brewery and cover the device, allowing the first filter element 31 and the second filter element 32 to directly contact the lees. When water condenses into droplets in the lees and seeps out under gravity, reaching the end face of the base, the first filter element 31 filters the water, achieving solid-liquid separation. Nutrient-rich water is collected in the chamber through the first perforated filter holes. The pipe formed by the second filter element 32 and the support assembly has a pressure much lower than the internal pressure of the brewer's lees. Therefore, due to the osmotic pressure imbalance, water in the lees surrounding the second filter element 32 permeates and filters through it, improving the device's filtration capacity and effectively reducing the water content of the lees.

[0052] Specifically, the base 1 is set on the ground. The base 1 can be constructed in a variety of ways, such as by using reinforced concrete or by using a metal shell. There is no single limitation here.

[0053] The support assembly of this application is set on the base 1, thereby forming a three-dimensional tree structure in the space where beer lees are stored in the beer cellar. This can effectively increase the contact surface between the second filter screen component 32 and the beer lees, and increase the filtration and permeation surface. When the moisture of the beer lees permeates into the pipe formed by the support assembly and the second filter screen component 32 and flows into the chamber, the water content of the beer lees is effectively reduced.

[0054] Example 2

[0055] In practical applications, to improve the penetration ability of brewer's lees and quickly reduce its moisture content, this application embodiment also designs a corresponding structure. Based on the above embodiment 1, please refer to... Figure 1 and Figure 4 The support assembly in this embodiment includes: a plurality of column frames 21, the plurality of column frames 21 being arranged side by side on the first end face of the base 1, the side wall of the column frame 21 having a second hollowed-out filter hole 210, and the outer wall of the column frame 21 being detachably covered with a second filter screen component 32.

[0056] The column frame 21 is hollow. It is installed on the base 1 and wrapped with a second filter screen component 32, forming a filtration and permeation surface on its outer periphery. Beer lees are filled around the column frame 21 and filtered through the second filter screen component 32, achieving solid-liquid separation. Water from the beer lees is filtered into a pipe and collects in a chamber for subsequent treatment. The connection angle between the support assembly and the base 1 can be adjusted according to actual conditions. For example, the support assembly can be fixed perpendicular to the end face of the base 1, or it can be tilted.

[0057] For example, the column frame 21 in this application embodiment can be a cylinder. The cylindrical frame has high spatial stability. Regarding the manufacturing method of the column frame 21, it can be set by welding steel strips onto the annular steel rings along the axial direction of the annular steel rings.

[0058] It should be noted that the column frame 21 can also be a polygonal column frame 21, such as a pentagonal prism, hexagonal prism, heptagonal prism, or any other prism with more than 3 sides. As long as the prism has a hollowing-out function, it can be used as the column frame 21 in this embodiment. Figure 4 The column frame 21 shown should not be construed as the only implementation of the embodiments of this application.

[0059] After a period of use, the second filter element 32, due to prolonged contact with nutrients in the beer lees, is prone to bacterial growth, leading to lees contamination. Therefore, the second filter element 32 and the column frame 21 are designed to be detachable, facilitating replacement and maintenance of the second filter element 32 and improving the reliability of the device provided in this embodiment.

[0060] The spacing and number of column frames 21 arranged side-by-side on the base 1 can be determined based on the actual moisture content of the brewer's lees. To facilitate adjustments based on the varying amounts of brewer's lees received each time, the connection between the column frames 21 and the base 1 in this embodiment can be detachable. For example, corresponding connector components can be installed on the base 1, with the column frames 21 and connector components connected by threads. The end face of the connector component that connects to the column frame is flush with the end face of the base 1, ensuring that the first filter screen component 31 can be laid flat on the base 1. Exemplarily, the connector components can be installed on the base 1 at intervals of 5 / 10 / 15 / 20 / 25 / 30 / 35 / 45 / 50cm, forming a square matrix structure of column frames 21. With this configuration, the number of column frames 21 is matched according to the fineness, moisture content, and quantity of the brewer's lees, thereby improving the filtration effect of the device. Preferably, the outer diameter of the column frame 21 can be 5 / 7.5 / 10 / 12.5 / 15cm, more preferably, the outer diameter of the column frame 21 is 7.5 to 10cm. At this spacing, a better space volume ratio can be obtained for stacking beer lees, and the second filter screen component 32 wrapped on the column frame 21 has a large filtration surface.

[0061] In this embodiment, the device further includes a cylindrical body (not shown). Along the radial direction of the column frame 21, a plurality of cylindrical bodies are connected to the column frame 21. One end of the cylindrical body extends outward away from the base 1. The side wall of the cylindrical body has a third perforated filter hole. The outer wall of the cylindrical body is detachably covered with the second filter screen component 32.

[0062] By setting multiple cylinders around the outer periphery of the column frame 21 and covering the cylinders with the second filter screen component 32, smaller filtration and permeation units are formed, thereby increasing the filtration and permeation contact surface for beer lees and improving filtration capacity. The axis of the cylinder is on the same plane as the radial direction of the column frame 21, which ensures that the cylinders between the column frames 21 do not interfere with each other and ensures the overall stability of the device.

[0063] In this embodiment, the cylindrical bodies are spaced apart along the length and circumferential directions of the outer wall of the column frame 21. Preferably, adjacent cylindrical bodies are arranged at intervals of 5 / 10 / 15 / 20 / 25 / 30 / 35 / 40 / 45 / 50 cm along the length of the column frame 21, and at intervals of 15° / 30° / 45° / 60° along the circumferential direction of the column frame 21.

[0064] In this embodiment, by setting multiple cylinders on the column frame 21, the filtration and penetration area of ​​beer lees is increased. When beer lees cover the column frame 21 and the outer periphery of the cylinders, the water in the beer lees can be filtered into the chamber through the second filter screen component 32 by means of the unbalanced osmotic pressure difference, which can quickly reduce the water content of the beer lees.

[0065] Example 3

[0066] In practical applications, brewer's lees are rich in various nutrients. Prolonged use of the filter element 3 can easily lead to bacterial growth. To prevent bacterial growth in the filter element 3, this application embodiment also designs a corresponding structure. Based on the above embodiment, please refer to... Figure 5 The first filter component 31 in this embodiment includes a first filter cloth 310 and a magnetic buckle 311. The magnetic buckle 311 is disposed on the edge of the first filter cloth 310, and the first filter cloth 310 is fixed on the base 1 by the magnetic buckle 311.

[0067] Specifically, by setting magnetic buckles 311 on the edge of the first filter cloth 310, the first filter cloth 310 is fixed to the end face of the base 1 by magnetic attraction. When beer lees are laid on the first filter cloth 310, the weight of the beer lees themselves will press the first filter cloth 310 tightly onto the base 1, thereby ensuring the sealing of the filter. When it needs to be replaced, the first filter cloth 310 can be separated by simply pulling it gently.

[0068] In another possible approach, a strip-shaped object with a certain weight can be placed on the edge of the first filter cloth 310. Under the action of gravity, the first filter cloth 310 is placed stably on the base 1, and the weight of the beer lees is used to press the first filter cloth 310 tightly onto the base 1, ensuring that the beer lees do not fall into the chamber.

[0069] In this embodiment, the second filter component 32 includes a second filter cloth (not shown) and a Velcro fastener (not shown). The second filter cloth is bent into a ring shape and is fixed to the bracket assembly by the Velcro fastener.

[0070] The materials of the cylinder and column frame 21 can be set according to the actual situation. For example, they can be made of aluminum alloy, plexiglass, or wood. Therefore, using Velcro fasteners has a better fit.

[0071] The materials of the first filter cloth 310 and the second filter cloth can be made of natural fibers and synthetic fibers. The mesh size of the first filter cloth 310 and the second filter cloth can be adjusted according to the particle size of the beer lees. For example, the mesh size of the first filter cloth 310 and the second filter cloth is 300 to 5000 mesh.

[0072] In this embodiment, the base 1 includes: a base plate 11 and a plurality of ribs 12; a plate body 13 is sealed and welded to the edge of the base plate 11; a plurality of support cylinders 14 are provided on the base plate 11; a liquid outlet hole 140 is provided at one end of the support cylinder 14 connected to the base plate 11; and a boss 15 is provided at one end of the support cylinder 14 away from the base plate 11.

[0073] The plurality of ribs 12 are connected to the base plate 11 by the boss 15, and adjacent ribs 12 form the first hollow filter hole;

[0074] The support cylinder 14 is fitted with the bracket assembly.

[0075] In practical applications, accumulated beer lees exert significant gravitational force; please refer to [link / reference needed]. Figure 2 and Figure 3 The base 1 is secured and stable by providing a support cylinder 14 on the base plate 11. The support cylinder 14 has an internal thread, and one end of the bracket assembly has an external thread that mates with it. Through the threaded connection, the bracket assembly can be fixed and disassembled according to the required number of bracket assemblies. A sealed welded plate 13 is placed on the base plate 11, and with the cooperation of the first filter assembly, the base 1 forms a sealed filtration system. Preferably, the rib 12 is made of steel.

[0076] In another feasible approach, a reinforced concrete base is constructed at the edge of the beer cellar floor, and precast concrete platforms for communication with the support assembly are placed in other areas of the floor. Several reinforcing bars 12 are arranged side by side on the reinforced concrete, and the floor and base of the beer cellar are waterproofed and sealed, thereby forming a system for filtering beer lees under the laying of the first filter screen component 31.

[0077] Example 4

[0078] Based on embodiments 1 to 3 above, water in brewer's lees is passively separated into solid and liquid components. The separation effect is greatly affected by time. To accelerate the filtration speed of brewer's lees, this application also designs a corresponding structure. Please refer to [link / reference]. Figure 1 In this embodiment, a pressure through hole 16 is provided on one side of the base 1;

[0079] A drain valve is also provided at the bottom of the base 1;

[0080] The device also includes a vacuum pump and a water collection tank. The vacuum pump performs filtration through the air pressure through-hole 16. The water collection tank is connected to the drain valve.

[0081] In practical applications, when brewer's lees are laid on the base and covered by the support assembly, the chamber and pipes in this embodiment define a sealed space. When a vacuum pump is activated to create a vacuum, negative pressure can be generated within the chamber and pipes, thereby accelerating the filtration speed and quickly filtering out the water from the brewer's lees. A water collection tank is set at the lowest point of the chamber to collect and treat water, preventing water from being stored in the chamber for a long time and causing the water to spoil. The chamber is connected to the vacuum pump, and under the action of vacuuming, the pressure in the chamber and pipes is much lower than the pressure of the brewer's lees. Thus, water from the brewer's lees is drawn into the chamber through negative suction. The column frame 21 and the cylinder increase the filtration area, enabling rapid solid-liquid separation.

[0082] The apparatus in this embodiment accelerates the solid-liquid separation efficiency of beer lees by using a vacuum filtration method.

[0083] Example 5

[0084] Based on the above embodiments, this application also provides a method for improving the dryness of brewer's lees, the method comprising:

[0085] (1) Add fiber feed to brewer's lees for conditioning;

[0086] (2) The conditioned beer lees are laid on the apparatus in the above embodiment;

[0087] (3) Start the vacuum pump for filtration. After filtration is completed, open the drain valve and store the filtration wastewater in the collection tank for harmless treatment.

[0088] Specifically, fibrous feed is added to brewer's lees for conditioning. This can be done using a screw feeder, where both the brewer's lees and the fibrous feed are fed into the feeder and then conveyed to the brewer's cellar in a spiral upward motion. Once the brewer's lees have completely covered the equipment, a vacuum pump is started for filtration. After filtration is complete, the resulting wastewater is transferred to a wastewater tank for harmless treatment.

[0089] In this embodiment, the mass fractions of the brewer's lees and the fiber feed are (80%~88%) and (12%~20%), respectively.

[0090] By absorbing some of the water in brewer's lees with fiber feed that has a low moisture content, excessive nutrient loss from the brewer's lees can be avoided. Preferably, the moisture content of the brewer's lees is 50% to 91%, and more preferably, it is 86% to 91%. In practical applications, brewer's lees with extremely high moisture content are those that have not undergone dehydration treatment. Directly using brewer's lees with this moisture content can save material costs.

[0091] For example, the fiber feed is preferably corn stalks, beet pulp, soybean hulls, stevia residue and apple pomace. More preferably, beet pulp is selected as the brewer's lees conditioning material. Preferably, the moisture content of beet pulp is 10% to 12%. When beet pulp with this moisture content is conditioning brewer's lees with high moisture content, it can absorb some water and avoid excessive loss of nutrients from the brewer's lees.

[0092] The method in this application embodiment can dehydrate beer lees with different fineness and water content. By accumulating the beer lees in the device, solid-liquid separation of water can be achieved. It has wide applicability and the advantages of convenience and speed.

[0093] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An apparatus for improving the dryness of brewer's lees, characterized in that, include: The base has a first end face and a second end face that are opposite to each other. The base has a cavity and a first perforated filter hole that communicates with the cavity is opened on the first end face. A filter assembly, comprising a first filter element and a second filter element, wherein the first filter element is laid on the first end face and the second filter element is covered on the support assembly; A support assembly is disposed on the first end face of the base; the support assembly includes multiple column frames, which are arranged side by side on the first end face of the base, the side walls of the column frames have second hollowed-out filter holes, and the outer walls of the column frames are detachably covered with a second filter screen component. The second filter component and the support assembly together form a pipe communicating with the chamber; The device also includes a cylindrical body. Along the radial direction of the column frame, a plurality of cylindrical bodies are connected to the column frame. One end of the cylindrical body extends outward away from the base. The side wall of the cylindrical body has a third perforated filter hole. The outer wall of the cylindrical body is detachably covered with the second filter screen component. The cylindrical bodies are spaced apart along the length and circumferential directions of the outer wall of the column frame; The first filter component includes: a first filter cloth and a magnetic buckle, wherein the magnetic buckle is disposed on the edge of the first filter cloth, and the first filter cloth is fixed on the base by the magnetic buckle; The base includes: a base plate and several reinforcing bars; a plate body is sealed and welded to the edge of the base plate; multiple support cylinders are provided on the base plate; a liquid outlet hole is provided at one end of the support cylinder connected to the base plate; and a boss is provided at the end of the support cylinder away from the base plate. The plurality of ribs overlap the base plate via the boss, and adjacent ribs form the first hollow filter hole; The support sleeve is fitted with the bracket assembly; The cylindrical bodies are spaced apart at any interval of 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm, 45cm, and 50cm along the length of the outer wall of the column frame, and at any angle of 15°, 30°, 45°, and 60° along the circumferential direction of the outer wall of the column frame.

2. The apparatus according to claim 1, wherein the second filter component comprises: The second filter cloth is bent into a ring shape and is fixed to the bracket assembly by the Velcro fastener.

3. The apparatus according to claim 1, characterized in that, An air pressure through hole is provided on one side of the base; A drain valve is also provided at the bottom of the base; The device also includes a vacuum pump and a water collection tank. The vacuum pump performs filtration through the air pressure through-hole. The water collection tank is connected to the drain valve.

4. A method for improving the dryness of brewer's lees, characterized in that, Includes the following steps: (1) Add fiber feed to brewer's lees for conditioning; (2) The conditioned beer lees are laid on the apparatus as described in any one of claims 1 to 3; (3) Start the vacuum pump for filtration. After filtration is completed, open the drain valve and store the filtration wastewater in the collection tank for harmless treatment.

5. The method according to claim 4, characterized in that, The mass fraction ratio of brewer's lees to the fiber feed is (80%~88%): (12%~20%).

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