Anaerobic digestion biomass carbon source combined biofilter denitrification device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an anaerobic digestion biomass carbon source combined biofilter denitrification device, which is characterized in that when sewage is added into a cavity of a fermentation box, solid impurities in the sewage are filtered out in advance through a filtering mechanism, so that a drainage mechanism on the fermentation box is prevented from being blocked by the solid impurities; use is convenient, and reliability and practicability are high; comprising a bottom plate, a supporting frame, a fermentation box, a feeding pipe, a water inlet pipe and a biological membrane denitrification reactor, the fermentation box is fixedly installed at the upper end of the bottom plate through the supporting frame, a cavity is formed in the fermentation box, the feeding pipe and the water inlet pipe are both installed on the fermentation box, the feeding pipe and the water inlet pipe are both communicated with the cavity of the fermentation box, and valves are both arranged on the feeding pipe and the water inlet pipe; the device further comprises a stirring mechanism, a drainage mechanism and a filtering mechanism, and the stirring mechanism is installed on the bottom plate and the fermentation box.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sewage treatment, especially to an anaerobic digestion biomass carbon source combined biological filter denitrification device. BACKGROUND

[0002] In the sewage treatment process, it is often necessary to denitrify the sewage. The common sewage denitrification method is to convert the nitrogen in the sewage into nitrogen gas through nitrification and denitrification. When denitrifying the sewage, the sewage is first subjected to nitrification to oxidize ammonia nitrogen into nitrite and nitrate under the action of nitrifying bacteria. Then the sewage is contacted with denitrifying bacteria under anaerobic conditions, so that the nitrate in the sewage is reduced to nitrogen gas under the action of denitrifying bacteria. Since denitrifying bacteria need organic carbon source as electron donor to reduce nitrate to nitrogen gas, a certain amount of carbon biomass source needs to be added to the sewage to ensure efficient denitrification of denitrifying bacteria. The common biomass carbon source is ethanol. In the prior art, the utility model patent with the patent application number 201920552203.X discloses an anaerobic digestion biomass carbon source combined biological filter denitrification device, which mainly comprises a water distribution tank, a fermentation tank, stirring blades and a pipeline communicating with the fermentation tank. In use, the sewage subjected to nitrification is added to the fermentation tank, then denitrifying bacteria and biomass carbon source are added to the fermentation tank, and then stirring is performed to convert the nitrogen in the sewage in the fermentation tank to nitrogen gas, which is discharged to the outside. However, the following problems exist in the use process. When adding sewage to the fermentation tank, the sewage is directly added to the fermentation tank. The sewage contains not only nitrogen ions but also some solid impurities. These solid impurities can easily block the drainage pipeline connected to the fermentation tank, causing the drainage pipeline to be blocked, affecting the drainage of water in the fermentation tank, and being inconvenient to use and poor in reliability. UTILITY MODEL CONTENTS

[0003] To solve the above technical problems, the utility model provides an anaerobic digestion biomass carbon source combined biological filter denitrification device which can filter out solid impurities in the sewage in advance through a filtering mechanism when adding sewage to the fermentation tank chamber, prevent the solid impurities from blocking the drainage mechanism on the fermentation tank, and is convenient to use, high in reliability and practicality.

[0004] The utility model discloses anaerobic digestion biomass carbon source combined biological filter denitrification device, including bottom plate, support frame, fermentation tank, feeding pipe, inlet pipe and biological membrane denitrification reactor, and the upper end of bottom plate is fixedly installed through support frame to fermentation tank, and the chamber is seted up in the fermentation tank, and the feeding pipe and inlet pipe all are installed on the fermentation tank, and the feeding pipe and inlet pipe all are connected with the chamber of fermentation tank, and all are provided with the valve on the feeding pipe and inlet pipe, still include stirring mechanism, drainage mechanism and filter mechanism, and the stirring mechanism is installed on the bottom plate and fermentation tank, and the stirring mechanism has the function of stirring, and the input and output of drainage mechanism are connected with fermentation tank and biological membrane denitrification reactor respectively, and the drainage mechanism is used for discharging the water in the chamber of fermentation tank, and the filter mechanism is installed on the fermentation tank, and the filter part of filter mechanism is located below the inlet pipe, when carrying out denitrification reaction to sewage, after the sewage that has passed nitrification reaction is added to the chamber of fermentation tank, after the sewage is added to the chamber of fermentation tank, the sewage is first filtered out the large particle impurities containing in the sewage by filter mechanism, then the sewage falls into the chamber of fermentation tank, then adds denitrification bacteria and biomass carbon source to the sewage in the chamber of fermentation tank through the feeding pipe, then opens the stirring mechanism, makes the sewage and denitrification bacteria and biomass carbon source mix fully, makes the nitrate in the sewage be reduced into nitrogen, then the sewage in the chamber of fermentation tank is discharged into the biological membrane denitrification reactor through the drainage mechanism and is further denitrified, when adding the sewage to the chamber of fermentation tank, the solid impurities in the sewage are filtered out in advance through the filter mechanism, prevent the solid impurities from causing the drainage mechanism on the fermentation tank to be blocked, convenient to use, and the reliability and practicality are high.

[0005] Preferably, the stirring mechanism includes motor and stirring shaft, and the motor is fixedly installed on the bottom plate, the stirring shaft is rotatably installed on the fermentation tank, the lower end of the stirring shaft is connected with the output end of the motor, and a plurality of stirring blades are arranged on the upper portion of the stirring shaft, and the plurality of stirring blades are located in the chamber of the fermentation tank.

[0006] Preferably, the filtering mechanism comprises a moving mechanism, a filter plate, a connecting rod, a sealing plate and a collection box, the upper end of the fermentation tank cavity is open, the filter plate is provided with a plurality of groups of filter holes in communication with each other, the lower end of the connecting rod is fixedly installed on the filter plate, the upper end of the connecting rod is fixedly connected with the sealing plate, the filter plate is located in the cavity of the fermentation tank, the filter plate is slidably installed in the cavity of the fermentation tank, the filter plate is located below the water inlet pipe, the moving mechanism is used for moving the sealing plate, the sealing plate is used for sealing the opening at the upper end of the fermentation tank cavity, and the collection box is placed on the bottom plate; when sewage is added into the fermentation tank through the water inlet pipe, the sewage falls on the filter plate, and the solid impurities in the sewage are left on the filter plate; when the denitrification is completed, the moving mechanism is used to move the sealing plate, the sealing plate drives the filter plate to move out of the fermentation tank through the connecting rod, and the filter plate is moved above the collection box, so that the filter plate is inclined, and the solid impurities on the filter plate can be automatically collected in the collection box; the filtration of the sewage is facilitated.

[0007] Preferably, the moving mechanism comprises a lifting mechanism, a translation mechanism, a connecting plate, a roller, a fixed frame and a stepping motor, the sealing plate is fixedly installed on the roller through the connecting plate, the roller is rotatably installed on the fixed frame, the input end of the roller is connected with the stepping motor, the stepping motor is fixedly installed on the fixed frame, the fixed frame is installed on the lifting mechanism, the lifting mechanism is used for lifting the fixed frame, and the lifting mechanism is installed on the translation mechanism; when the denitrification of the sewage in the fermentation tank is completed, the lifting mechanism is used to drive the roller and the connecting plate to ascend with the fixed frame, the connecting plate drives the sealing plate, the connecting rod and the filter plate to ascend above the fermentation tank, then the translation mechanism is used to drive the lifting mechanism and the fixed frame to translate above the collection box, so that the connecting plate, the sealing plate, the connecting rod and the filter plate are moved above the collection box, then the stepping motor is started, the stepping motor drives the roller to rotate, so that the connecting plate drives the sealing plate and the connecting rod to be inclined, and then the filter plate is inclined, so that the solid impurities on the filter plate can be collected in the collection box; the collection of the solid impurities is facilitated.

[0008] Preferably, the lifting mechanism comprises a hydraulic cylinder and a push rod, the upper end of the push rod is connected with the output end of the hydraulic cylinder, and the fixed frame is fixedly installed at the lower end of the push rod; when the fixed frame is lifted, the hydraulic cylinder is opened, and the hydraulic cylinder drives the fixed frame to adjust the height through the push rod; the height adjustment of the fixed frame is facilitated.

[0009] Preferably, the translation mechanism comprises a hoisting frame, an electric sliding rail and a sliding plate, the electric sliding rail is fixedly installed on the hoisting frame, the sliding plate is installed on the electric sliding rail, the electric sliding rail is used for moving the sliding plate left and right, and the hydraulic cylinder is fixedly installed at the lower end of the sliding plate; the hoisting frame is fixedly hoisted on the support of the workshop; when the fixed frame is moved left and right, the electric sliding rail is opened, the electric sliding rail drives the sliding plate to move left and right, and the electric sliding rail drives the push rod to drive the fixed frame to move in the left-right direction through the hydraulic cylinder; the left-right movement of the fixed frame is facilitated.

[0010] Preferably, the drainage mechanism comprises a delivery pump, a liquid inlet pipe and a liquid outlet pipe, the delivery pump is installed on the bottom plate, the input end of the delivery pump is communicated with the lower part of the fermentation tank cavity through the liquid inlet pipe, and the output end of the delivery pump is communicated with the biofilm denitrification reactor through the liquid outlet pipe; when the sewage is denitrified in the fermentation tank, the delivery pump is opened, and the sewage denitrified in the fermentation tank cavity is sequentially added into the biofilm denitrification reactor through the liquid inlet pipe, the delivery pump and the liquid outlet pipe for denitrification again, so that the sewage is conveniently delivered.

[0011] Compared with the prior art, the beneficial effects of the utility model are that when sewage is added into the fermentation tank cavity, the solid impurities in the sewage are filtered out in advance through the filtering mechanism, so that the solid impurities are prevented from causing blockage of the drainage mechanism on the fermentation tank, and the utility model is convenient to use, high in reliability and practicality. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the first axonometric structure schematic diagram of the utility model;

[0013] Figure 2 is the second axonometric structure schematic diagram of the utility model;

[0014] Figure 3 is the structure schematic diagram of the hydraulic cylinder, push rod and fixed frame etc.;

[0015] Figure 4 is the structure schematic diagram of the sealing plate, connecting rod and filter plate;

[0016] Figure 5 is the structure schematic diagram of the drainage mechanism;

[0017] Figure 6 is the structure schematic diagram of the stirring mechanism.

[0018] Markings in the drawings: 1, bottom plate; 2, support frame; 3, fermentation tank; 4, feeding pipe; 5, water inlet pipe; 6, biofilm denitrification reactor; 7, motor; 8, stirring shaft; 9, filter plate; 10, connecting rod; 11, sealing plate; 12, collection tank; 13, connecting plate; 14, roller; 15, fixed frame; 16, stepping motor; 17, hydraulic cylinder; 18, push rod; 19, hoisting frame; 20, electric sliding rail; 21, sliding plate; 22, delivery pump; 23, liquid inlet pipe; 24, liquid outlet pipe. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0020] like Figures 1 to 6 This utility model's anaerobic digestion biomass carbon source combined biological filter denitrification device includes a base plate 1, a support frame 2, a fermentation tank 3, a feeding pipe 4, a water inlet pipe 5, a biofilm denitrification reactor 6, a stirring mechanism, a drainage mechanism, and a filtration mechanism. The fermentation tank 3 is fixedly installed on the upper end of the base plate 1 via the support frame 2. The fermentation tank 3 has a chamber. The feeding pipe 4 and the water inlet pipe 5 are both installed on the fermentation tank 3 and are connected to the chamber of the fermentation tank 3. Valves are installed on both the feeding pipe 4 and the water inlet pipe 5. The stirring mechanism is installed on the base plate 1 and the fermentation tank 3 and has a stirring function. The input and output ends of the drainage mechanism are connected to the fermentation tank 3 and the biofilm denitrification reactor 6, respectively. The drainage mechanism is used to discharge water from the chamber of the fermentation tank 3. The filtration mechanism is installed on the fermentation tank 3, and the filtration section of the filtration mechanism is located below the water inlet pipe 5. When wastewater is discharged... During the denitrification reaction, the wastewater after nitrification is added to the chamber of fermentation tank 3 through inlet pipe 5. After the wastewater is added to the chamber of fermentation tank 3, the wastewater is first filtered by the filtration mechanism to remove large particulate impurities. Then the wastewater falls into the chamber of fermentation tank 3. Then, denitrifying bacteria and biomass carbon source are added to the wastewater in the chamber of fermentation tank 3 through feeding pipe 4. Then, the stirring mechanism is turned on to fully mix the wastewater with the denitrifying bacteria and biomass carbon source, so that the nitrates in the wastewater are reduced to nitrogen gas. Then, the wastewater in the chamber of fermentation tank 3 is discharged into the biofilm denitrification reactor 6 through the drainage mechanism for further denitrification. When adding wastewater to the chamber of fermentation tank 3, the filtration mechanism filters out solid impurities in the wastewater in advance, preventing solid impurities from clogging the drainage mechanism on fermentation tank 3. It is convenient to use and has high reliability and practicality.

[0021] like Figure 1 and Figure 6 The stirring mechanism includes a motor 7 and a stirring shaft 8. The motor 7 is fixedly mounted on the base plate 1. The stirring shaft 8 is rotatably mounted on the fermentation tank 3. The lower end of the stirring shaft 8 is connected to the output end of the motor 7. Multiple sets of stirring blades are provided on the upper part of the stirring shaft 8, and all sets of stirring blades are located in the chamber of the fermentation tank 3. When the motor 7 is turned on, the stirring shaft 8 rotates, which in turn drives the sewage in the chamber of the fermentation tank 3 to move, promoting the mixing between sewage and biomass carbon source and denitrifying bacteria, and improving the denitrification effect.

[0022] like Figure 3 and Figure 4, the filter mechanism comprises a moving mechanism, a filter plate 9, a connecting rod 10, a sealing plate 11 and a collection box 12, the upper end of the chamber of the fermentation tank 3 is open, a plurality of groups of filter holes communicating upward and downward are arranged on the filter plate 9, the lower end of the connecting rod 10 is fixedly installed on the filter plate 9, the upper end of the connecting rod 10 is fixedly connected with the sealing plate 11, the filter plate 9 is located in the chamber of the fermentation tank 3, the filter plate 9 is slidably installed in the chamber of the fermentation tank 3, the filter plate 9 is located below the water inlet pipe 5, the moving mechanism is used for moving the sealing plate 11, the sealing plate 11 is used for sealing the opening at the upper end of the chamber of the fermentation tank 3, and the collection box 12 is placed on the bottom plate 1; when sewage is added into the fermentation tank 3 through the water inlet pipe 5, the sewage falls on the filter plate 9, and solid impurities in the sewage are left on the filter plate 9; when denitrification is completed, the sealing plate 11 is moved through the moving mechanism, the filter plate 9 is driven out of the fermentation tank 3 by the connecting rod 10, and the filter plate 9 is moved above the collection box 12, so that the filter plate 9 is inclined, and the solid impurities on the filter plate 9 automatically slide into the collection box 12 for collection; the filtration of the sewage is facilitated.

[0023] As Figure 1 and Figure 3 , the moving mechanism comprises a lifting mechanism, a translation mechanism, a connecting plate 13, a roller shaft 14, a fixed frame 15 and a stepping motor 16, the sealing plate 11 is fixedly installed on the roller shaft 14 through the connecting plate 13, the roller shaft 14 is rotatably installed on the fixed frame 15, the input end of the roller shaft 14 is connected with the stepping motor 16, the stepping motor 16 is fixedly installed on the fixed frame 15, the fixed frame 15 is installed on the lifting mechanism, the lifting mechanism is used for lifting the fixed frame 15, and the lifting mechanism is installed on the translation mechanism; when denitrification of the sewage in the fermentation tank 3 is completed, the fixed frame 15 drives the roller shaft 14 and the connecting plate 13 to rise by the lifting mechanism, the connecting plate 13 drives the sealing plate 11, the connecting rod 10 and the filter plate 9 to rise above the fermentation tank 3, then the lifting mechanism and the fixed frame 15 are translated above the collection box 12 by the translation mechanism, then the connecting plate 13, the sealing plate 11, the connecting rod 10 and the filter plate 9 are moved above the collection box 12, then the stepping motor 16 is started, the roller shaft 14 is driven to rotate by the stepping motor 16, then the connecting plate 13 drives the sealing plate 11 and the connecting rod 10 to be inclined, then the filter plate 9 is inclined, and the solid impurities on the filter plate 9 slide into the collection box 12 for collection; the collection of the solid impurities is facilitated.

[0024] The lifting mechanism comprises a hydraulic cylinder 17 and a push rod 18, the upper end of the push rod 18 is connected with the output end of the hydraulic cylinder 17, and the fixed frame 15 is fixedly installed at the lower end of the push rod 18; when the fixed frame 15 is lifted, the hydraulic cylinder 17 is started, and the fixed frame 15 adjusts the height by the push rod 18; the height adjustment of the fixed frame 15 is facilitated.

[0025] As Figure 2The translation mechanism comprises a hoisting frame 19, an electric slide rail 20 and a sliding plate 21, the electric slide rail 20 is fixedly installed on the hoisting frame 19, the sliding plate 21 is installed on the electric slide rail 20, the electric slide rail 20 is used for moving the sliding plate 21 left and right, and the hydraulic cylinder 17 is fixedly installed at the lower end of the sliding plate 21; the hoisting frame 19 is fixedly hoisted on the support of the workshop; when the fixed frame 15 is moved left and right, the electric slide rail 20 is opened, the electric slide rail 20 drives the sliding plate 21 to move left and right, and the electric slide rail 20 drives the push rod 18 to move the fixed frame 15 in the left and right directions through the hydraulic cylinder 17, so that the fixed frame 15 is conveniently moved left and right.

[0026] As Figure 5 The drainage mechanism comprises a conveying pump 22, a liquid inlet pipe 23 and a liquid outlet pipe 24, the conveying pump 22 is installed on the bottom plate 1, the input end of the conveying pump 22 is communicated with the lower part of the chamber of the fermentation tank 3 through the liquid inlet pipe 23, and the output end of the conveying pump 22 is communicated with the biofilm denitrification reactor 6 through the liquid outlet pipe 24; when the sewage is denitrified in the fermentation tank 3, the conveying pump 22 is opened, and the water, which is denitrified in the chamber of the fermentation tank 3, is sequentially added into the biofilm denitrification reactor 6 through the liquid inlet pipe 23, the conveying pump 22 and the liquid outlet pipe 24 for denitrification again, so that the conveying of the sewage is facilitated. Example 2

[0027] On the basis of the example 1, the sealing plate 11 is additionally provided with an exhaust valve, nitrogen generated when the sewage is denitrified in the fermentation tank 3 can be exhausted through the exhaust valve; and a vacuum pump is additionally provided on the fermentation tank 3, air in the fermentation tank 3 is exhausted, the anaerobic environment in the fermentation tank 3 is ensured, and the reaction of the denitrifying bacteria is facilitated.

[0028] The fermentation tank 3, the biofilm denitrification reactor 6, the stirring shaft 8, the hydraulic cylinder 17 and the electric slide rail 20 of the anaerobic digestion biomass carbon source combined biological filter denitrification device are all purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the technical personnel in the field paying creative labor.

[0029] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for the ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a plurality of improvements and modifications can be made, and the improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. An anaerobic digestion biomass carbon source combined biofilter denitrification device, comprising a base plate (1), a support frame (2), a fermentation tank (3), a feeding pipe (4), a water inlet pipe (5) and a biofilm denitrification reactor (6), the fermentation tank (3) is fixedly installed on the upper end of the base plate (1) through the support frame (2), a cavity is arranged in the fermentation tank (3), the feeding pipe (4) and the water inlet pipe (5) are both installed on the fermentation tank (3), the feeding pipe (4) and the water inlet pipe (5) are both communicated with the cavity of the fermentation tank (3), and valves are arranged on the feeding pipe (4) and the water inlet pipe (5); characterized in that, It also includes stirring mechanism, drainage mechanism and filtering mechanism, the stirring mechanism is installed on the bottom plate (1) and fermentation tank (3), the stirring mechanism has the function of stirring, the input end and the output end of the drainage mechanism are communicated with the fermentation tank (3) and the biofilm denitrification reactor (6) respectively, the drainage mechanism is used for discharging water in the chamber of the fermentation tank (3), the filtering mechanism is installed on the fermentation tank (3), and the filtering part of the filtering mechanism is located below the water inlet pipe (5).

2. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 1, characterized in that, The stirring mechanism includes motor (7) and stirring shaft (8), the motor (7) is fixedly installed on the bottom plate (1), the motor (7) is fixedly installed on the bottom plate (1), the stirring shaft (8) is rotatably installed on the fermentation tank (3), the lower end of the stirring shaft (8) is connected with the output end of the motor (7), and the upper part of the stirring shaft (8) is provided with a plurality of stirring blades, and the plurality of stirring blades are located in the chamber of the fermentation tank (3).

3. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 1, characterized in that, The filtering mechanism includes moving mechanism, filter plate (9), connecting rod (10), sealing plate (11) and collection tank (12), the upper end of the chamber of the fermentation tank (3) is open, a plurality of upper and lower communication filter holes are arranged on the filter plate (9), the lower end of the connecting rod (10) is fixedly installed on the filter plate (9), the upper end of the connecting rod (10) is fixedly connected with the sealing plate (11), the filter plate (9) is located in the chamber of the fermentation tank (3), the filter plate (9) is slidably installed in the chamber of the fermentation tank (3), the filter plate (9) is located below the water inlet pipe (5), the moving mechanism is used for moving the sealing plate (11), the sealing plate (11) is used for sealing the opening at the upper end of the chamber of the fermentation tank (3), and the collection tank (12) is placed on the bottom plate (1).

4. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 3, characterized in that, The moving mechanism includes lifting mechanism, translation mechanism, connecting plate (13), roller shaft (14), fixed frame (15) and stepping motor (16), the sealing plate (11) is fixedly installed on the roller shaft (14) through the connecting plate (13), the roller shaft (14) is rotatably installed on the fixed frame (15), the input end of the roller shaft (14) is connected with the stepping motor (16), the stepping motor (16) is fixedly installed on the fixed frame (15), the fixed frame (15) is installed on the lifting mechanism, the lifting mechanism is used for lifting the fixed frame (15), and the lifting mechanism is installed on the translation mechanism.

5. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 4, characterized in that, The lifting mechanism includes hydraulic cylinder (17) and push rod (18), the upper end of the push rod (18) is connected with the output end of the hydraulic cylinder (17), and the fixed frame (15) is fixedly installed on the lower end of the push rod (18).

6. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 4, characterized in that, The translation mechanism includes hoisting frame (19), electric sliding rail (20) and sliding plate (21), the electric sliding rail (20) is fixedly installed on the hoisting frame (19), the sliding plate (21) is installed on the electric sliding rail (20), the electric sliding rail (20) is used for moving the sliding plate (21) left and right, and the hydraulic cylinder (17) is fixedly installed on the lower end of the sliding plate (21).

7. The anaerobic digestion biomass carbon source combined biofilter denitrification device according to claim 1, characterized in that, The drainage mechanism comprises a delivery pump (22), a liquid inlet pipe (23) and a liquid outlet pipe (24), the delivery pump (22) is installed on the bottom plate (1), the input end of the delivery pump (22) is communicated with the lower part of the fermentation box (3) cavity through the liquid inlet pipe (23), and the output end of the delivery pump (22) is communicated with the biofilm denitrification reactor (6) through the liquid outlet pipe (24).

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