A brewing industrial wastewater treatment device

Abstract

The present invention relates to the field of wastewater treatment, and particularly to a wastewater treatment device for the brewing industry, including a fixing frame, a sedimentation tank, etc.; a sedimentation tank is arranged on the fixing frame. The present invention realizes the rapid precipitation of flocs floating in wastewater by the active downward pressing of the first filter screen and the second filter screen, improves the efficiency of the device in treating wastewater, and at the same time presses the impurities floating in the supernatant into the lower-layer wastewater together, reducing the subsequent treatment steps for the supernatant; due to the poor water permeability of the first filter screen and the second filter screen, and the downward depression in the middle of the first filter screen, it is avoided to cause blockage during the process of pressing the flocs downward, and at the same time, the flocs can be converged under the second filter screen, which is convenient for subsequent centralized cleaning and improves the treatment effect of the device on wastewater; by the pressing plate pushing the receiving plate and the elastic cloth to unfold, a negative pressure is formed to make the adhered flocs detached, realizing the self-cleaning of the device.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, and particularly to a wastewater treatment device for the brewing industry. Background Art

[0002] The wastewater generated during the brewing process needs to be treated subsequently before it can be discharged or recycled. During the preliminary treatment of brewing wastewater, it is necessary to first pass through a filter screen to sieve out large particles of impurities and residues of brewing raw materials. Subsequently, a flocculant is added for precipitation. The supernatant is discharged or recycled, and the lower-layer wastewater and flocs are collected and treated centrally. However, since the precipitation of flocs itself takes a long time, and at the same time, the sugar content in brewing wastewater is relatively high, which results in a relatively high viscosity of the wastewater, and the flocs floating in the wastewater precipitate more slowly, thereby prolonging the treatment time of the wastewater and affecting the treatment efficiency of the wastewater.

[0003] At the same time, when the upper-layer supernatant needs to be recycled, it is necessary to first pump out the upper-layer supernatant through a pipeline, and then discharge the lower-layer wastewater as specified. This not only increases the additional equipment and manual operation costs, but also makes the entire process more cumbersome and complex due to the step-by-step treatment of the upper-layer supernatant and the lower-layer wastewater, affecting the production efficiency. Summary of the Invention

[0004] In order to overcome the disadvantages that the sugar content in brewing wastewater is relatively high, the flocs precipitate slowly, affecting the treatment efficiency of the wastewater, and at the same time, when recycling the upper-layer supernatant, it is necessary to treat the upper-layer supernatant and the wastewater sequentially, resulting in cumbersome steps, the present invention provides a wastewater treatment device for the brewing industry.

[0005] Technical Solution: A wastewater treatment device for the brewing industry includes a fixed frame, a sedimentation tank, and a first collection tank; the sedimentation tank is arranged on the fixed frame; the first collection tank is communicated with the sedimentation tank; it further includes a fixed frame, a first filter screen, a second filter screen, a first electric push rod, and a cleaning component; a plurality of first electric push rods are installed on the fixed frame; the telescopic ends of the plurality of first electric push rods are commonly fixedly connected to a fixed frame; a plurality of first filter screens facilitating water penetration are arranged in the fixed frame; a plurality of second filter screens preventing flocs from interfering with the penetration of the supernatant are commonly fixedly connected between the fixed frame and the first filter screen; each second filter screen is made of elastic metal material, and the water permeability of the second filter screen is higher than that of the first filter screen; a cleaning component for preventing flocs from adhering to the second filter screen is arranged in the fixed frame; the cleaning component is composed of a second electric push rod, a pressing plate, a baffle, and a pressing rod; a plurality of second electric push rods are fixedly connected to the upper side of the fixed frame; the telescopic ends of the plurality of second electric push rods are commonly fixedly connected to a pressing plate; a plurality of pressing rods are fixedly connected to the front side and the rear side of the pressing plate; a baffle is fixedly connected in the sedimentation tank.

[0006] Optionally, it further includes a receiving plate, a cover plate, an elastic cloth, a third filter screen and a top plate; a sewage pipe is arranged on the front side of the sedimentation tank; a rotatable plate that can be opened is arranged on the front side of the sedimentation tank; a receiving plate is connected to the baffle through a spring; an elastic cloth for improving the cleaning effect of flocs is fixedly connected between each receiving plate and the baffle; two holes are formed in each receiving plate; a cover plate is slidably connected to the hole of each receiving plate; the third filter screen is detachably connected to the inner side of the sedimentation tank, and the third filter screen is located under the baffle; several top plates are fixedly connected to the inner side of the sedimentation tank; each top plate is directly below the adjacent cover plate.

[0007] Optionally, the upper side of each receiving plate is arched.

[0008] Optionally, the parts of the pressing plate that are in contact with the second filter screen are all arranged in a downwardly convex arc shape.

[0009] Optionally, several guiding parts for preventing flocs from remaining in the sedimentation tank are arranged on the upper side of the baffle; each guiding part is arranged in an inclined shape with the middle high and both sides low.

[0010] Optionally, each first filter screen is arranged in a concave shape in the middle.

[0011] Optionally, the whole baffle is coated with a hydrophobic coating.

[0012] Optionally, it further includes a separation tank, a connecting pipe, a second collection tank, a sealing plate and a third electric push rod; a separation tank for separating the supernatant is fixedly connected to the outside of the sedimentation tank; several connecting pipes are connected to the lower side of the separation tank; several second collection tanks are fixedly connected to the lower side of the fixed frame; several third electric push rods are fixedly connected to the left and right sides of the sedimentation tank; the telescopic ends of the third electric push rods on the same side are jointly fixedly connected to a sealing plate; overflow grooves are formed on the left and right sides of the sedimentation tank, and each sealing plate seals the adjacent overflow groove.

[0013] Optionally, several guiding parts for guiding the supernatant are arranged in the separation tank, the guiding parts are arranged obliquely downward, and the connecting pipe is located at the lowest point of the guiding part.

[0014] The beneficial effects are as follows: The present invention realizes the rapid precipitation of flocs floating in the wastewater by the active pressing of the first filter screen and the second filter screen, improves the efficiency of the equipment for wastewater treatment, and at the same time presses the impurities floating in the supernatant into the lower-layer wastewater together, reducing the subsequent treatment steps for the supernatant;

[0015] Due to the poor water permeability of the first filter screen and the second filter screen, and the middle of the first filter screen being concave downward, it avoids the blockage phenomenon during the process of pressing the flocs, and at the same time can make the flocs gather under the second filter screen, facilitating subsequent centralized cleaning and improving the treatment effect of the equipment on the wastewater;

[0016] The pressing plate is used to push the receiving plate and the elastic cloth to unfold, thereby forming a negative pressure to separate the adhered flocs, realizing the self-cleaning of the equipment;

[0017] The fixed frame and the pressing plate rise and reset together to collect the supernatant liquid into the second collection pool, making the equipment more efficient in treating wastewater;

[0018] The flocs are guided by the guiding part to prevent the flocs from remaining in the sedimentation tank and avoid affecting the subsequent wastewater sedimentation. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the brewing industrial wastewater treatment equipment of the present invention;

[0020] Figure 2 It is a combined sectional view of the fixed frame and the sedimentation tank of the present invention;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the fixed frame, the first filter screen and the second filter screen combination of the present invention;

[0022] Figure 4 It is a front view of the second electric push rod, the pressing plate and the extrusion rod of the present invention;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the receiving plate, the elastic cloth and the third filter screen combination of the present invention;

[0024] Figure 6 It is a sectional view of the separation tank of the present invention.

[0025] In the reference numerals: 1 - fixed frame, 2 - sedimentation tank, 3 - first collection pool, 4 - fixed frame, 5 - first filter screen, 6 - second filter screen, 101 - first electric push rod, 102 - second electric push rod, 103 - pressing plate, 104 - baffle plate, 10401 - guiding part, 105 - separation tank, 10501 - guiding part, 106 - connecting pipe, 107 - second collection pool, 108 - extrusion rod, 109 - sealing plate, 110 - receiving plate, 111 - cover plate, 112 - elastic cloth, 113 - third filter screen, 114 - top plate, 115 - third electric push rod. Detailed Embodiments

[0026] The following is a specific introduction to the present invention in combination with the drawings and specific embodiments.

[0027] Embodiment 1

[0028] As Figures 1 - 5 shown, a brewing industrial wastewater treatment equipment includes a fixed frame 1, a sedimentation tank 2 and a first collection pool 3; a sedimentation tank 2 is arranged on the fixed frame 1; the lower side of the sedimentation tank 2 is communicated with the first collection pool 3;

[0029] It further includes a fixed frame 4, a first filter screen 5, a second filter screen 6, a first electric push rod 101 and a cleaning component; a plurality of first electric push rods 101 are installed on the fixed frame 1; the telescopic ends of the plurality of first electric push rods 101 are jointly fixedly connected to a fixed frame 4; three first filter screens 5 are arranged in the fixed frame 4; a plurality of second filter screens 6 are jointly fixedly connected between the fixed frame 4 and the first filter screen 5; each second filter screen 6 is made of elastic metal material, and the water permeability of each second filter screen 6 is higher than that of the first filter screen 5; a cleaning component is arranged in the fixed frame 1; the cleaning component consists of a second electric push rod 102, a pressing plate 103, a baffle plate 104 and an extrusion rod 108; a plurality of second electric push rods 102 are fixedly connected to the upper side of the fixed frame 1; the telescopic ends of the plurality of second electric push rods 102 are jointly fixedly connected to a pressing plate 103; a plurality of extrusion rods 108 are fixedly connected to the front side and the rear side of the pressing plate 103; a baffle plate 104 is fixedly connected in the sedimentation tank 2.

[0030] It further includes a receiving plate 110, a cover plate 111, an elastic cloth 112, a third filter screen 113 and a top plate 114; a sewage discharge pipe is arranged on the front side of the sedimentation tank 2; a rotatable plate that can be opened is arranged on the front side of the sedimentation tank 2; a receiving plate 110 is connected to the baffle plate 104 through a spring; an elastic cloth 112 is fixedly connected between each receiving plate 110 and the baffle plate 104; two holes are formed in each receiving plate 110; a cover plate 111 is slidably connected to the hole of each receiving plate 110; the third filter screen 113 is detachably connected to the inner side of the sedimentation tank 2, and the third filter screen 113 is located below the baffle plate 104; a plurality of top plates 114 are fixedly connected to the inner side of the sedimentation tank 2; each top plate 114 is located directly below the adjacent cover plate 111.

[0031] The upper side of each receiving plate 110 is in an arch shape.

[0032] The part of the pressing plate 103 that fits on the second filter screen 6 is set to be an arc shape protruding downward.

[0033] A plurality of guiding parts 10401 are arranged on the upper side of the baffle plate 104; each guiding part 10401 is set to be in an inclined shape with the middle high and both sides low.

[0034] Each first filter screen 5 is set to be concave downward in the middle.

[0035] The whole baffle plate 104 is coated with a hydrophobic coating, which can prevent flocs from adhering to the surface of the baffle plate 104 under the driving and flowing action of water flow, and prevent flocs from affecting the subsequent precipitation of wastewater.

[0036] Before treating the brewing wastewater, the workers first pour the wastewater into the sedimentation tank 2 through an external conveying pipeline. Subsequently, a flocculant is added into the conveying pipeline, and the flocculant is poured into the wastewater to make it precipitate. After precipitation, the wastewater forms supernatant and lower-layer wastewater. Finally, the workers discharge and recycle the supernatant, while the lower-layer wastewater is discharged after removing the flocculants. Since the sugar content in the brewing wastewater is relatively high, the overall brewing wastewater is viscous. During the flocculation precipitation process, the flocculants in the wastewater are affected by the viscous wastewater, resulting in an extended precipitation time for the flocculants, which affects the overall treatment efficiency of the wastewater. Therefore, after the flocculant is added and reacts for a period of time, the workers start the first electric push rod 101 to push the fixed frame 4, the first filter screen 5, and the second filter screen 6 to move downward together and immerse them into the sedimentation tank 2, that is, immerse them into the wastewater. Subsequently, under the push of the first electric push rod 101, the first filter screen 5 and the second filter screen 6 continue to move downward, allowing the flocculated wastewater to normally pass through the first filter screen 5 and the second filter screen 6, while the flocculants cannot pass through. Thus, during the downward movement, the first filter screen 5 and the second filter screen 6 together drive the flocculants to move downward. During this process, the flocculants floating in the wastewater are quickly precipitated by the active downward pressure of the first filter screen 5 and the second filter screen 6, improving the treatment efficiency of the equipment for the wastewater. At the same time, the impurities floating in the supernatant are pressed into the lower-layer wastewater together, reducing the subsequent treatment steps for the supernatant.

[0037] During the process of using the first filter screen 5 and the second filter screen 6 to accelerate the precipitation of the flocculants, considering that during the process of the flocculated wastewater penetrating the first filter screen 5 and the second filter screen 6 from bottom to top, the flocculants are easily pressed under the lower sides of the first filter screen 5 and the second filter screen 6 during the penetration of the wastewater, resulting in the blockage of both the first filter screen 5 and the second filter screen 6, and thus making it difficult for the wastewater to pass through. Therefore, when the wastewater passes through the second filter screen 6, since the second filter screen 6 is made of an elastic material, the middle part of the second filter screen 6 is pressed and recessed upward, and thus cooperates with the middle part of the first filter screen 5 recessed downward to form a wavy shape as a whole, making it easier for the flocculants to accumulate in the upwardly recessed area of the second filter screen 6. At the same time, since the water permeability effect of the second filter screen 6 is higher than that of the first filter screen 5, the resistance for the wastewater to pass through the second filter screen 6 is smaller, so that most of the wastewater penetrates from the position of the second filter screen 6, while a small part of the wastewater penetrates from the first filter screen 5, forming a pressure difference between the first filter screen 5 and the second filter screen 6. The flow rate in the area of the second filter screen 6 is fast and the pressure is small, while the flow rate in the area of the first filter screen 5 is slow and the pressure is large. Thus, the flocculants flow to the area with a smaller pressure, that is, flow to the second filter screen 6, while the first filter screen 5 normally allows water to pass through. Without affecting the penetration of the wastewater, it avoids blockage during the process of pressing down the flocculants, and at the same time, it can also make the flocculants converge under the second filter screen 6, facilitating subsequent centralized cleaning and improving the treatment effect of the equipment for the wastewater.

[0038] It is also considered that after the wastewater sedimentation is completed, workers are required to clean the flocs on the second filter screen 6 and the sedimentation tank 2 subsequently to avoid the influence of residual flocs on the next wastewater sedimentation. The conventional cleaning method not only increases the labor cost, but also requires the equipment to be stopped, resulting in low efficiency of the whole process. Therefore, when all the flocs are sedimented, the worker starts the second electric push rod 102 to push the pressing plate 103 downward into the wastewater. It should be noted that after the flocs are completely sedimented, the first filter screen 5 and the second filter screen 6 never contact the upper side of the baffle 104. At the same time, the length and width of the pressing plate 103 are both smaller than the length and width of the sedimentation tank 2. During the process of the pressing plate 103 being immersed in the wastewater, the pressing plate 103 drives the extrusion rod 108 to move downward, so that before the pressing plate 103 contacts the fixed frame 4, the extrusion rod 108 first contacts the upper side of the receiving plate 110, and then pushes the receiving plate 110 to move downward, thereby compressing the spring between the receiving plate 110 and the sedimentation tank 2, and further stretching the elastic cloth 112, so that the space formed between the baffle 104, the receiving plate 110 and the elastic cloth 112 gradually increases, thus forming a negative pressure between the receiving plate 110 and the elastic cloth 112. The flocs adhering to the lower side of the second filter screen 6 are sucked towards the receiving plate 110 under the action of the negative pressure, so that the flocs on the second filter screen 6 are separated. At the same time, under the action of the negative pressure, since the pressing plate 103 has not contacted the fixed frame 4 at this time, part of the supernatant seeps downward through the second filter screen 6 under the influence of the negative pressure, and then part of the supernatant is used to backwash the second filter screen 6, further improving the cleaning effect on the second filter screen 6, so that the flocs completely fall on the receiving plate 110 and the baffle 104, realizing the cleaning of the first filter screen 5 and the second filter screen 6. At the same time, when the pressing plate 103 contacts the fixed frame 4, the parts of the pressing plate 103 that are attached to the second filter screen 6 are all set to be arc-shaped protruding downward, so that the second filter screen 6 is pressed and bulges downward in the middle, making the adhered flocs easier to separate. At the same time, the pressing plate 103 and the fixed frame 4 cooperate to divide the sedimentation tank 2 into upper and lower layers, so that the supernatant is located above the fixed frame 4 and the pressing plate 103, and the lower-layer wastewater is located below the fixed frame 4 and the pressing plate 103. At this time, the first electric push rod 101 and the second electric push rod 102 continue to extend downward synchronously, so that the fixed frame 4 and the pressing plate 103 move downward synchronously. Since the cover plate 111 is tightly closed on the receiving plate 110 under the action of water pressure, when the pressing plate 103 continues to push the receiving plate 110 downward, the cover plate 111 contacts the top plate 114 and cannot continue to move downward, and then is lifted by the top plate 114, thereby opening the hole opened on the receiving plate 110. Subsequently, the lower-layer wastewater and flocs flow from the hole to the third filter screen 113. Under the action of the third filter screen 113, the wastewater flows into the first collection tank 3, and the flocs remain on the third filter screen 113, that is, the wastewater and flocs in the sedimentation tank 2 are both discharged. Subsequently, the sewage pipe in front of the first collection tank 3 can be opened, and then the wastewater can be discharged according to the requirements. For the treatment of the flocs, only after the work is completed, the worker opens the rotating plate in front of the sedimentation tank 2,Subsequently, the third filter screen 113 is taken out, and then the flocs on the third filter screen 113 are rinsed. There is no need to shut down the equipment for cleaning. At the same time, the flocs remaining on the second filter screen 6 are cleaned, realizing the self-cleaning of the equipment. Further, under the cooperation with the flow of wastewater, the diversion part 10401 guides the flocs remaining in the sedimentation tank 2 to the third filter screen 113 together, preventing the residual flocs in the sedimentation tank 2 from affecting the subsequent wastewater sedimentation.

[0039] Embodiment 2

[0040] On the basis of Embodiment 1, as Figure 1 and Figure 6 shown, it further includes a separation tank 105, a connecting pipe 106, a second collection tank 107, a sealing plate 109 and a third electric push rod 115; a separation tank 105 is fixedly connected to the outside of the sedimentation tank 2; several connecting pipes 106 are connected to the lower side of the separation tank 105; two second collection tanks 107 are fixedly connected to the lower side of the fixed frame 1; several third electric push rods 115 are fixedly connected to the left and right sides of the sedimentation tank 2; the telescopic ends of the third electric push rods 115 on the same side are commonly fixedly connected to a sealing plate 109; overflow grooves are provided on the left and right sides of the sedimentation tank 2, and each sealing plate 109 plugs the adjacent overflow groove.

[0041] Two guiding parts 10501 are arranged in the separation tank 105. The guiding parts 10501 are arranged obliquely downward, and the connecting pipe 106 is located at the lowest point of the guiding parts 10501.

[0042] After the wastewater and flocs are discharged, by controlling the first electric push rod 101 and the second electric push rod 102 to reset synchronously, the fixed frame 4 and the pressing plate 103 are driven to reset upward. At the same time, the third electric push rod 115 is started to contract, and then the sealing plate 109 is lifted, so as to open the overflow grooves on the left and right sides of the sedimentation tank 2, making the liquid level of the supernatant gradually rise under the lifting action of the fixed frame 4 and the pressing plate 103, so that the supernatant flows out from the overflow groove, and then flows to the separation tank 105, and then flows to the connecting pipe 106 under the guidance of the guiding part 10501, preventing the supernatant from remaining in the separation tank 105. Finally, the supernatant is collected into the second collection tank 107, that is, the supernatant is collected during the reset process of the fixed frame 4 and the pressing plate 103, making the treatment of wastewater more efficient.

[0043] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A brewing industry wastewater treatment device, comprising a fixed frame (1), a sedimentation tank (2) and a first collection tank (3); the fixed frame (1) is provided with the sedimentation tank (2); the sedimentation tank (2) is connected to the first collection tank (3); the characteristics are: It also comprises a fixed frame (4), a first filter screen (5), a second filter screen (6), a first electric push rod (101) and a cleaning assembly; a plurality of first electric push rods (101) are mounted on the fixed frame (1); the telescopic ends of the plurality of first electric push rods (101) are fixedly connected to the fixed frame (4); a plurality of first filter screens (5) that facilitate water permeability are arranged in the fixed frame (4); a plurality of second filter screens (6) that prevent floccules from interfering with the penetration of supernatant are fixedly connected between the fixed frame (4) and the first filter screen (5); each second filter screen (6) is made of elastic metal material, and the second filter screen (6) The water permeability of the second filter screen (6) is higher than that of the first filter screen (5); a cleaning component for preventing floccules from adhering to the second filter screen (6) is arranged in the fixed frame (1); the cleaning component is composed of a second electric push rod (102), a pressure plate (103), a baffle (104) and an extrusion rod (108); a plurality of second electric push rods (102) are fixedly connected to the upper side of the fixed frame (1); the telescopic ends of the plurality of second electric push rods (102) are commonly fixedly connected to a pressure plate (103); a plurality of extrusion rods (108) are fixedly connected to the front and rear sides of the pressure plate (103); a baffle (104) is fixedly connected to the sedimentation tank (2); The invention also comprises a receiving plate (110), a cover plate (111), an elastic cloth (112), a third filter screen (113) and a top plate (114); a sewage discharge pipe is arranged at the front side of the sedimentation tank (2); an openable rotating plate is arranged at the front side of the sedimentation tank (2); the baffle plate (104) is connected to the receiving plate (110) via a spring; an elastic cloth (112) is fixedly connected between each receiving plate (110) and the baffle plate (104) to improve the cleaning effect of flocs. 12); two holes are formed on each receiving plate (110); a cover plate (111) is slidably connected to the hole of each receiving plate (110); a third filter screen (113) is detachably connected to the inner side of the sedimentation tank (2), and the third filter screen (113) is located below the baffle (104); a plurality of top plates (114) are fixedly connected to the inner side of the sedimentation tank (2); each top plate (114) is located directly below an adjacent cover plate (111); The upper side of each receiving plate (110) is in an arch shape.

2. A brewing industry wastewater treatment equipment according to claim 1, characterized in that: The portion of the pressing plate (103) that is attached to the second filter screen (6) is configured to be in an arc shape that bulges downward.

3. A brewing industry wastewater treatment equipment according to claim 2, characterized in that: A plurality of guide portions (10401) are arranged on the upper side of the baffle (104) to prevent flocs from remaining in the sedimentation tank (2); each guide portion (10401) is arranged in an inclined shape with a high middle and low sides.

4. A brewing industry wastewater treatment equipment according to claim 1, characterized in that: Each first filter screen (5) is configured to have a downwardly concave middle portion.

5. The brewing industry wastewater treatment equipment according to claim 3, characterized in that: The baffle (104) is entirely coated with a hydrophobic coating.

6. A brewing industry wastewater treatment equipment according to claim 3, characterized in that: The invention also comprises a separation tank (105), a connecting pipe (106), a second collecting tank (107), a sealing plate (109) and a third electric push rod (115); the outer side of the sedimentation tank (2) is fixedly connected with the separation tank (105) for separating the supernatant; the lower side of the separation tank (105) is connected with a plurality of connecting pipes (106); the lower side of the fixing frame (1) is fixedly connected with a plurality of second collecting tanks (107); the left side and the right side of the sedimentation tank (2) are fixedly connected with a plurality of third electric push rods (115); the telescopic ends of the third electric push rods (115) on the same side are fixedly connected with a sealing plate (109); the left side and the right side of the sedimentation tank (2) are provided with overflow grooves, and each sealing plate (109) blocks the adjacent overflow grooves.

7. A brewing industry wastewater treatment equipment according to claim 6, characterized in that: A plurality of guide portions (10501) for guiding supernatant are arranged in the separation tank (105); the guide portions (10501) are arranged to be inclined downward, and the connecting pipe (106) is located at the lowest point of the guide portions (10501).

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