Efficient strain fed-batch device

Abstract

The utility model discloses an efficient strain fed-batch device which is characterized in that a strain expanding culture mechanism is used for fermenting and expanding culture of biological strains, a water storage barrel and a sludge outlet pipe are arranged in the strain feeding mechanism, the strains fermented and expanded by the strain expanding culture mechanism enter the strain feeding mechanism, supernate of the strains enters the water storage barrel, and bacterial sludge flows into the sludge outlet pipe; the reactor is connected with the sludge outlet pipe and is used for receiving bacterial sludge. According to the utility model, the three-phase separator and the stirrer enable the fermentation device to carry out strain fermentation under an anaerobic condition; when aerobic strain fermentation and propagation are carried out, the three-phase separator and the stirrer can be taken out, and the aeration head with the connecting pipe is placed, so that the use effect is good.

Description

Technical Field

[0001] The utility model relates to a high-efficiency bacterial strain flow-addition device. Background Art

[0002] With the development of industrial production, many difficult-to-degrade synthetic organic compounds have emerged. They are widely used in human production and life, and also enter the natural environment through various channels, resulting in the continuous growth of pollutants in the environment. Studies have shown that difficult-to-degrade organic wastewater has long-term residual, bioaccumulation, semi-volatility, and high toxicity. If it is discharged into the environment without treatment, it will inevitably seriously pollute the environment and threaten people's health. Biological treatment is currently a commonly used wastewater treatment method. This treatment method uses the metabolism of microorganisms to assimilate soluble or colloidal organic matter in sewage into part of itself, or degrade it into harmless substances, so as to achieve the purpose of purifying the water body. Compared with other treatment methods, biological treatment has the advantages of low cost, high efficiency, easy operation, and no secondary pollution, so it has been widely used. Microorganisms have great potential for decomposing organic wastewater. The main reasons are that microorganisms are tiny, have a large specific surface area, and have a fast metabolic rate; there are many types of microorganisms, they are widely distributed, and have diverse metabolic types; microorganisms reproduce quickly, are easy to mutate, have strong adaptability, and have the ability to degrade large molecular organic matter; plasmids in microorganisms can be transferred quickly, allowing other bacteria to acquire new degradation capabilities; interactions between microorganisms and the co-metabolism of pollutants by microorganisms also greatly increase the possibility of some difficult-to-degrade substances being biodegraded.

[0003] This patent mainly cultivates high-efficiency strains through a strain expansion mechanism, and solves the dilemma of strains not being able to dominate due to water quality problems by strain flow addition in small-scale tests or actual applications, thereby improving the stability of degrading organic wastewater. By separating strain cultivation from aerobic biochemistry or anaerobic operation, process control and operation operations are simplified. Summary of the invention

[0004] The utility model provides a high-efficiency bacterial strain flow-addition device in order to solve the problems existing in the above-mentioned prior art.

[0005] The technical solutions adopted in this utility model are:

[0006] A high-efficiency bacterial strain flow-addition device, comprising

[0007] A strain expansion mechanism, which is used for fermentation expansion of biological strains;

[0008] A strain feeding mechanism, wherein a water storage tank and a mud outlet pipe are provided in the strain feeding mechanism, the strain fermented and expanded by the strain expansion mechanism enters the strain feeding mechanism, the supernatant of the strain enters the water storage tank, and the mud flows into the mud outlet pipe;

[0009] The reactor is connected to the mud outlet pipe and is used to receive the bacterial mud.

[0010] Furthermore, the strain expansion mechanism includes a strain fermentation tank, a three-phase separator and a stirrer. The strain fermentation tank is a multi-section splicing structure fixedly connected by a flange. The three-phase separator and the stirrer can be detachably installed on the strain fermentation tank. The three-phase separator is located at the top of the strain fermentation tank. The stirring paddle in the stirrer extends into the inner cavity of the strain fermentation tank. A liquid outlet is provided at the bottom end of the strain fermentation tank, and the liquid outlet is connected to the strain flow addition mechanism.

[0011] Furthermore, the three-phase separator is connected to the bacterial fermentation tank through a flange structure, and a feed port, an air outlet channel, an air outlet and an air hood are provided on the three-phase separator. The air hood is arranged below the three-phase separator and placed in the inner cavity of the bacterial fermentation tank, and the air hood and the air outlet are both connected to the air outlet channel.

[0012] Furthermore, the air hood is a conical hood.

[0013] Furthermore, a hollow supporting column is provided on the upper end surface of the three-phase separator, the supporting column is coaxially arranged with the gas hood, and the stirring shaft in the stirrer passes through the supporting column and the gas hood.

[0014] Furthermore, an insulation layer is provided on the outer wall of the bacterial fermentation tank, and an insulation cavity is formed between the inner wall surface of the insulation layer and the outer wall surface of the bacterial fermentation tank. The insulation layer is provided with a water inlet and a water outlet connected to the insulation cavity.

[0015] Furthermore, a plurality of first ball valves are connected in layers on the outer wall of the bacterial fermentation tank, a switch valve is connected to the bottom of the bacterial fermentation tank, and a peristaltic pump is connected between the switch valve and one of the first ball valves.

[0016] Furthermore, the device also includes an aeration mechanism, which includes an aeration head and a timed aerator. The aeration heads are respectively arranged in the strain expansion mechanism and the reactor, and the two aeration heads are respectively connected to the timed aerator through an aeration pipe.

[0017] Furthermore, the device also includes an automatic pH regulator, and a measuring head of the automatic pH regulator is placed in the bacterial strain expansion mechanism.

[0018] Furthermore, a heat-insulating layer is provided on the outer wall of the reactor.

[0019] The utility model has the following beneficial effects:

[0020] 1) The utility model enables the fermentation device to perform bacterial fermentation under anaerobic conditions through the three-phase separator and the stirrer; when aerobic bacterial fermentation and expansion are carried out, the three-phase separator and the stirrer can be taken out and placed in an aeration head with a connecting pipe, which has a good use effect.

[0021] 2) Flange connection for easy cleaning: The fermentation tank is tightly connected to the upper and lower parts through the flange in the middle. When cleaning, the flange is disassembled and the upper and lower parts are cleaned separately. Not only the tank wall can be cleaned, but also the corners of the tank bottom can be cleaned.

[0022] 3) The stirring rod is connected with a screw sleeve, and the stirring shaft can be extended according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the utility model.

[0024] Figure 2 This is the assembly structure diagram of the three-phase separator.

[0025] Figure 3 This is a structural diagram of the bottom of the bacterial fermentation tank. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 3 The utility model is a high-efficiency strain flow-addition device, comprising a strain expansion mechanism, a strain flow-addition mechanism and a reactor 36. The strain expansion mechanism is used for fermentation and expansion of biological strains. A water storage tank 30 and a mud outlet pipe are arranged in the strain flow-addition mechanism. The strains fermented and expanded by the strain expansion mechanism enter the strain flow-addition mechanism, the supernatant of the strain enters the water storage tank, the bacterial mud flows into the mud outlet pipe, and the reactor is connected to the mud outlet pipe for receiving the bacterial mud.

[0028] The bacterial strain expansion mechanism includes a bacterial strain fermentation tank 19, a three-phase separator 4 and an agitator 1. The bacterial strain fermentation tank is a multi-section splicing structure fixedly connected by a flange, that is, a plurality of pipe fittings with flange surfaces are fixed to each other, and finally a bacterial strain fermentation tank 19 with a closed lower end and an open upper end is formed. The three-phase separator 4 and the agitator 1 can be detachably installed on the bacterial strain fermentation tank 19. The three-phase separator 4 is located at the top of the bacterial strain fermentation tank 19. The stirring paddle 22 in the agitator 1 extends into the inner cavity of the bacterial strain fermentation tank 19. A liquid outlet is provided at the bottom end of the bacterial strain fermentation tank 19, and the liquid outlet is connected to the bacterial strain flow addition mechanism.

[0029] The three-phase separator 4 is connected to the bacterial fermentation tank 19 through a flange structure. A feed port 3, an air outlet channel 7, an air outlet 8 and an air hood 16 are provided on the three-phase separator 4. The air hood 16 is a conical hood. The air hood 16 is arranged below the three-phase separator 4 and placed in the inner cavity of the bacterial fermentation tank 19. The air hood 16 and the air outlet 8 are both connected to the air outlet channel 7. The three-phase separator 4 is connected to the air bag 18 through the air outlet 8 to connect the air outlet pipe.

[0030] The stirrer 1 achieves a stable balance through its own bracket and the support column 6 placed on the upper part of the connecting hole 9. The support column 6 is hollow and coaxially arranged with the air hood 16. The stirring shaft in the stirrer 1 passes through the support column 6 and the air hood 16. The stirring shaft in the stirrer 1 is a spliced ​​shaft, which is connected to a stirring rod and a stirring paddle 22 of a suitable length through a screw sleeve 21, and the materials required for the expansion of the culture are added through the feed port 3.

[0031] The outer wall of the strain fermentation tank 19 is provided with an insulation layer 17, and an insulation cavity is formed between the inner wall surface of the insulation layer 17 and the outer wall surface of the strain fermentation tank 19. The insulation layer 17 is provided with a water inlet and a water outlet connected to the insulation cavity, and water inlet and outlet are realized through the second ball valve 15. The strain fermentation tank 19 can be kept warm by injecting warm water into the insulation cavity, and the same insulation layer is also provided in the reactor 36.

[0032] A plurality of first ball valves 20 are connected in layers on the outer wall of the bacterial fermentation tank 19, a switch valve 24 is connected to the bottom of the bacterial fermentation tank 19, and a peristaltic pump is connected between the switch valve 24 and one of the first ball valves 20. During the bacterial expansion culture, if internal circulation treatment is required inside the expansion culture device, the first ball valve 20 at the top of the device and the switch valve 24 at the bottom (any one of them will do) can be connected and an external peristaltic pump can be connected to perform internal circulation from top to bottom.

[0033] The device also includes an aeration mechanism, which includes an aeration head 34 and a timed aerator 33. The aeration heads 34 are respectively arranged in the bacterial culture expansion mechanism and the reactor 36. The two aeration heads 34 are respectively connected to the timed aerator 33 through an aeration pipe.

[0034] The device also includes an automatic pH regulator 12, the measuring head of which extends into the connecting hole 10, so as to achieve the purpose of real-time monitoring and regulating the pH in the device.

[0035] A solenoid valve 25 is provided at the bottom of the bacterial strain expansion mechanism, which is connected to the bacterial strain flow-adding mechanism 27 through a connecting pipe 26. The bacterial strain flow-adding mechanism 27 is connected to the water storage barrel 30 on the side, and is connected to the reactor 36 at the bottom by setting a mud outlet valve 31 and a mud outlet pipe 32. There are two ways for the bacterial sludge to enter the reactor. One is manual control. When the bacterial strain enters the bacterial strain flow-adding mechanism 27, the bacterial sludge sinks to the bottom. The valve at the liquid inlet of the water storage barrel 30 is opened, and the supernatant enters the water storage barrel 30 through the outlet pipe 29. The mud outlet valve 31 is opened, and the bacterial sludge is added to the reactor according to actual needs. The other is automatic control. The valve at the liquid inlet of the water storage barrel 30 and the mud outlet valve 31 are set as solenoid valves, which are timed to switch according to the sedimentation time of the bacterial sludge and the actual amount of bacterial sludge required by the reactor.

[0036] When expanding anaerobic bacteria, a three-phase separator 4 and a stirrer 1 are installed on the bacteria expansion mechanism, and the materials required for expanding the bacteria are added through the feed inlet 3. The fermented and expanded bacteria enter the bacteria flow addition mechanism 27 through the solenoid valve 25, and the supernatant enters the water storage tank 30. The bacterial mud is put into the reactor through the mud outlet pipe 32 and mud outlet valve 31 set at the bottom of the bacteria flow addition mechanism 27.

[0037] When aerobic bacteria are expanded, the three-phase separator 4 and the agitator 1 installed on the bacteria expansion mechanism are removed, and an aeration head 34 connected through an aeration pipe is placed in the expansion device. The top is connected to a timer aerator 33, and the materials required for expanding the bacteria are added by removing the top cover. The bacteria expanded after fermentation enters the bacteria flow addition mechanism 27 through the electromagnetic valve 25, the supernatant enters the water storage tank 30, and the bacterial mud is put into the reactor through the mud outlet pipe 32 and mud outlet valve 31 set at the bottom of the bacteria flow addition mechanism 27.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A high-efficiency bacterial strain fed-batch device, characterized in that: include A strain expansion mechanism, which is used for fermentation expansion of biological strains; A strain feeding mechanism, wherein a water storage tank and a mud outlet pipe are provided in the strain feeding mechanism, the strain fermented and expanded by the strain expansion mechanism enters the strain feeding mechanism, the supernatant of the strain enters the water storage tank, and the mud flows into the mud outlet pipe; A reactor, the reactor is connected to the mud outlet pipe and is used to receive the bacterial mud; The strain expansion mechanism includes a strain fermentation tank, a three-phase separator and a stirrer. The strain fermentation tank is a multi-section splicing structure fixedly connected by a flange. The three-phase separator and the stirrer can be detachably installed on the strain fermentation tank. The three-phase separator is located at the top of the strain fermentation tank. The stirring paddle in the stirrer extends into the inner cavity of the strain fermentation tank. A liquid outlet is provided at the bottom end of the strain fermentation tank, and the liquid outlet is connected to the strain flow addition mechanism.

2. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: The three-phase separator is connected to the bacterial fermentation tank through a flange structure. A feed port, an air outlet channel, an air outlet and an air hood are provided on the three-phase separator. The air hood is arranged below the three-phase separator and placed in the inner cavity of the bacterial fermentation tank. The air hood and the air outlet are both connected to the air outlet channel.

3. The high-efficiency bacterial strain fed-batch device according to claim 2, characterized in that: The air hood is a conical hood.

4. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: The upper end surface of the three-phase separator is provided with a hollow supporting column, the supporting column is coaxially arranged with the gas hood, and the stirring shaft in the stirrer passes through the supporting column and the gas hood.

5. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: The outer wall of the strain fermentation tank is provided with an insulation layer, and an insulation cavity is formed between the inner wall surface of the insulation layer and the outer wall surface of the strain fermentation tank. The insulation layer is provided with a water inlet and a water outlet connected to the insulation cavity.

6. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: A plurality of first ball valves are connected in layers on the outer wall of the strain fermentation tank, a switch valve is connected at the bottom of the strain fermentation tank, and a peristaltic pump is connected between the switch valve and one of the first ball valves.

7. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: The device also includes an aeration mechanism, which includes an aeration head and a timing aerator. The aeration heads are respectively arranged in the bacterial culture expansion mechanism and the reactor, and the two aeration heads are respectively connected to the timing aerator through an aeration pipe.

8. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: The device also includes a pH automatic regulator, and a measuring head of the pH automatic regulator is placed in the bacterial strain expansion mechanism.

9. The high-efficiency bacterial strain fed-batch device according to claim 1, characterized in that: A heat-insulating layer is arranged on the outer wall of the reactor.

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