Automatic microorganism expanding culture device

Abstract

The utility model relates to the technical field of microorganism culture, and discloses an automatic microorganism expanding culture device which comprises a fermentation tank, and a feeding unit, a temperature adjusting unit, an oxygen capacity adjusting unit, a PH (Potential of Hydrogen) detection unit and a discharging unit which are respectively arranged on the fermentation tank, the feeding unit is arranged at the upper part of the fermentation tank and comprises a raw water inlet and a sludge inlet which are formed in the fermentation tank, a raw water control part mounted on the raw water inlet and a sludge control part arranged on the sludge inlet; the controller is electrically connected with the raw water control part and the sludge control part respectively; the raw water control part controls the amount of sewage entering the fermentation pump according to a signal of the controller, and the sludge control part controls the amount of sludge entering the fermentation tank according to the signal of the controller; according to the utility model, other tanks are not required to be input, so that the working procedures and the required time can be effectively reduced, the occupied area is small, and the cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial cultivation, and more specifically, to an automated microbial expansion and cultivation device. Background Art

[0002] Currently, the technology of using special microorganisms to treat specific polluted water bodies is developing rapidly. Microbial colonies have the characteristics of fast reproduction, strong vitality, safety and non-toxicity, and low operating costs. However, in actual applications in sewage treatment plants, water quality fluctuations often cause the large-scale extinction of special microorganisms, resulting in a decrease in the treatment effect of the sewage treatment system and unsatisfactory treatment results.

[0003] The utility model patent with the authorization announcement number CN219546976U discloses a culture device for taming low-temperature nitrifying bacteria, wherein a first feeding port, a second feeding port and an exhaust port are arranged on the top of the culture tank; two feeding ports are arranged, both of which are arranged at the upper end of the culture tank, which is conducive to the direct entry of the feed liquid into the culture tank and uniform mixing with the aeration system in the tank; a separate feeding port can be arranged on the top of the culture tank, and the first feeding port can also be used as the feeding port. If the feeding port is used alone, it is an open-cover feeding and feeding nutrient salt port with a sight glass, and all nutrient raw materials and auxiliary materials can be added before the start of cultivation; the first feeding port is connected to an ammonium sulfate source through a pipeline, and an ammonia nitrogen index control addition switch is arranged on the pipeline, and the ammonia nitrogen index control addition switch is electrically connected to the ammonia nitrogen replenishment control device; the second feeding port is connected to a sodium carbonate source through a pipeline, and a pH index control addition switch is arranged on the pipeline, and the pH index control addition switch is electrically connected to the pH control device.

[0004] The current microbial expansion device is similar to the above scheme, which realizes the addition of bacterial species, nutrients and other liquids by setting a separate feeding port or using the first feeding port. Because it has multiple uses, it requires manual observation and manual operation, and has a low degree of automation. In order to improve the adaptability and treatment capacity of microorganisms to poor water quality, it is necessary to contact the microbial liquid with the pretreated sludge water in advance. The traditional microbial expansion device first cultivates the microbial liquid through the microbial culture tank as in the above scheme, and then passes the liquid into the sludge water tank with poor water quality for cultivation. This method has many processes, and the multiple tanks occupy a large area and are costly. Utility Model Content

[0005] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide an automated microbial expansion and cultivation device for solving the technical problems of needing to use multiple tanks for cultivation, having many processes, having a large area occupied by multiple tanks and having high costs.

[0006] The technical solution adopted by the present utility model is an automated microbial culture expansion device, which includes a fermentation tank, a feed unit, a temperature adjustment unit, an oxygen capacity adjustment unit, a pH detection unit, and a discharge unit respectively installed on the fermentation tank; the feed unit is arranged on the upper part of the fermentation tank and includes a raw water inlet and a sludge inlet provided on the fermentation tank, a raw water control component installed on the raw water inlet, and a sludge control component provided on the sludge inlet; it also includes a controller, and the controller is electrically connected to the raw water control component and the sludge control component respectively; the raw water control component controls the amount of sewage entering the fermentation pump according to the controller signal, and the sludge control component controls the amount of sludge entering the fermentation tank according to the controller signal.

[0007] In this solution, a raw water inlet for inputting sewage and a sludge inlet for inputting sludge are directly provided on the fermentation tank. After the microbial culture is completed, sewage and sludge can be input into the fermentation tank through the raw water inlet and the sludge inlet. In this way, the cultivation of microbial resistance and treatment capacity can be carried out in the fermentation tank without the need to transfer and input to other tanks, which can effectively reduce the process and the required time, reduce the floor area, and lower the cost; and through the cooperation of the controller with the raw water control component and the sludge control component, the accurate control of the sewage and sludge addition amounts is realized, without manual operation, and the degree of automation is high.

[0008] Further, the raw water control component is a raw water solenoid valve, and the sludge control component is a sludge solenoid valve. The controller controls the raw water solenoid valve to realize the control of the sewage amount, and the controller controls the sludge solenoid valve to realize the control of the sludge amount, which improves the degree of automation.

[0009] Further, the feed unit also includes a water inlet, a bacterial liquid inlet, and a nutrient solution inlet provided on the fermentation tank, a water amount control component installed on the water inlet, a bacterial liquid control component installed on the bacterial liquid inlet, and a nutrient solution control component installed on the nutrient solution inlet; the water amount control component, the bacterial liquid control component, and the nutrient solution control component are electrically connected to the controller respectively, and control the water amount, bacterial liquid amount, and nutrient solution amount entering the fermentation tank according to the controller signal. Through the cooperation of the controller with the water amount control component, the bacterial liquid control component, and the nutrient solution control component respectively, the control of the water amount, bacterial liquid amount, and nutrient solution amount entering the fermentation tank can be realized, further improving the degree of automation, effectively shortening the culture time, and accelerating the culture efficiency.

[0010] Further, the water amount control component is a water inlet solenoid valve, the bacterial liquid control component is a bacterial liquid metering pump, and the nutrient solution control component is a nutrient solution metering pump. The controller controls the on-off of the water inlet solenoid valve to realize the control of the water inflow, and the controller controls the start and stop of the nutrient solution metering pump and the bacterial liquid metering pump to realize the control of the nutrient solution and bacterial liquid amounts. The degree of automation is high, and the flow control accuracy is high.

[0011] Further, the temperature regulation unit includes an industrial electric blanket and a liquid temperature sensor. The industrial electric blanket is wrapped around the outer peripheral surface of the fermentation tank, and the liquid temperature sensor is arranged on the fermentation tank. The industrial electric blanket and the liquid temperature sensor are respectively electrically connected to the controller. The sensing end of the liquid temperature sensor is located inside the fermentation tank and is used to measure the temperature of the liquid inside the fermentation tank. The controller controls the industrial electric blanket to heat or stop according to the signal transmitted by the liquid temperature sensor, realizing the automatic regulation of temperature. It can effectively prevent the temperature from being too high or too low. The electric blanket can also play a heat preservation role, preventing the temperature from dissipating too quickly, effectively saving the cost required for heating. The temperature conducted is relatively uniform, effectively preventing the death of microorganisms caused by excessive local heating temperature.

[0012] Further, the oxygen capacity regulation unit includes an on-line dissolved oxygen analyzer and an aeration device. The on-line dissolved oxygen analyzer is installed on the fermentation tank, and the aeration device is installed at the bottom inside the fermentation tank. The controller controls the aeration device to aerate or stop working according to the signal transmitted by the on-line dissolved oxygen analyzer. The sensing end of the on-line dissolved oxygen analyzer is arranged inside the fermentation tank and is used to detect the oxygen content of the liquid inside the fermentation tank. The aeration device can increase the oxygen content of the liquid inside the fermentation tank through aeration. In this way, the controller can realize the automatic control of the oxygen content inside the fermentation tank by controlling the aeration device, with a high degree of automation.

[0013] Further, the PH detection unit includes an on-line PH detector. The on-line PH detector is installed on the fermentation tank and is used to measure the PH value of the liquid inside the fermentation tank. The on-line PH detector is electrically connected to the controller. The PH value can be displayed on the controller screen. During adjustment, the controller performs corresponding ratio adjustment according to the PH values of water, raw water, sludge, bacterial liquid, and nutrient solution, ensuring that the liquid inside the fermentation tank is at a PH suitable for the survival of the bacterial liquid and effectively preventing the liquid inside the fermentation tank from being too acidic or too alkaline.

[0014] Further, the discharging unit includes a discharging port, a discharging solenoid valve, and a discharging pump. The discharging port is arranged at the bottom of the fermentation tank. The inlet end of the discharging pump is connected to the discharging port through a pipeline. The discharging solenoid valve is arranged on the pipeline between the discharging pump and the discharging port. The discharging solenoid valve and the discharging pump are respectively electrically connected to the controller. By controlling the discharging solenoid valve and the discharging pump through the controller, automatic discharging can be realized, further improving the degree of automation. The discharging unit also includes a sewage discharging port. The position of the discharging port is higher than that of the sewage discharging port, and the sewage discharging port is used to discharge the sludge deposited inside the fermentation tank.

[0015] Further, it also includes an overflow port, which is arranged at the top of the side wall of the fermentation tank, and its position is higher than the positions of the raw water inlet and the sludge inlet. As an overflow port, its position is also higher than the positions of the water inlet, the bacterial liquid inlet, and the nutrient solution inlet. When a solenoid valve or a metering pump is damaged, the overflow port can play an effective pressure relief role and prevent the pressure in the fermentation tank from being too high.

[0016] Further, it also includes a liquid level gauge, which is installed on the fermentation tank and electrically connected to the controller. The sensing end of the liquid level gauge is located inside the fermentation tank. The liquid level gauge is used to monitor the height of the liquid level in the fermentation tank. When adding water, sewage, sludge, bacterial liquid, and nutrient solution, the controller can control the start and stop of the solenoid valve and the flow pump according to the height of the liquid level gauge, so as to achieve precise control of the addition amount. When the solenoid valve or the flow pump is damaged, it can also be quickly known. Of course, in the absence of a liquid level gauge, the corresponding addition amount can also be controlled by controlling the working time of the solenoid valve and the flow pump, but the accuracy is relatively poor.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: In this solution, a raw water inlet for inputting sewage and a sludge inlet for inputting sludge are directly arranged on the fermentation tank. After the microbial culture is completed, sewage and sludge are input into the fermentation tank through the raw water inlet and the sludge inlet. In this way, the cultivation of microbial resistance and treatment ability can be carried out in the fermentation tank without the need to transfer to other tanks, which can effectively reduce the processes and the required time, occupy a small area, and can effectively reduce costs; Through the cooperation of the controller with the raw water control component and the sludge control component, precise control of the addition amounts of sewage and sludge is achieved, without manual operation, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic diagram of the position of the controller of the present utility model.

[0020] In the figure: 1. Overflow port; 2. Water inlet; 3. Raw water inlet; 4. Sludge inlet; 5. Bacterial liquid inlet; 6. Nutrient solution inlet; 7. Aeration port; 8. Discharge port; 9. Sewage discharge port; 10. Aeration equipment; 11. Fermentation tank; 12. Device housing; 13. Controller; 14. Nutrient solution metering pump; 15. Bacterial liquid metering pump; 16. Discharge pump; 17. Industrial electric blanket; 18. Water inlet solenoid valve; 19. Raw water solenoid valve; 20. Sludge solenoid valve; 21. Aeration solenoid valve; 22. Discharge solenoid valve; 23. Online pH detector; 24. Online dissolved oxygen meter; 25. Liquid temperature sensor; 26. Liquid level gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The attached drawings of the utility model are only for illustrative purposes and should not be construed as a limitation on the utility model. To better illustrate the following embodiments, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0022] Please refer to Figure 1-2 , this embodiment provides an automated microbial culture expansion device, which includes a device housing 12. Inside the device housing 12, there is a fermentation tank 11. The fermentation tank 11 is provided with a feeding unit, a temperature adjustment unit, an oxygen capacity adjustment unit, a PH detection unit, and a discharging unit; the device housing 12 is preferably made of galvanized sprayed plastic board with a wall thickness of 1.5 mm, and the fermentation tank 11 is made of stainless steel 304 with a wall thickness of 3 mm, and the effective capacity can be 2 m 3 、1.5 m 3 、1 m 3 and other models.

[0023] The feeding unit is used to send clear water, raw water, nutrient solution, bacterial liquid (containing a large number of bacteria), and compressed gas into the fermentation tank 11; specifically, the feeding unit includes a water inlet 2, a raw water inlet 3, a sludge inlet 4, a bacterial liquid inlet 5, and a nutrient solution inlet 6 opened at the upper end of the side wall of the fermentation tank 11; the water inlet 2 is used to introduce dechlorinated clear water into the fermentation tank 11, and a water volume control component, that is, a water inlet solenoid valve 18, is connected to the water inlet 2; the raw water inlet 3 is used to introduce the wastewater from the biochemical tank, that is, the raw water, into the fermentation tank 11 to enhance the adaptability of microorganisms. A raw water control component, that is, a raw water solenoid valve 19, is connected to the raw water inlet 3 to control the inflow; the sludge inlet 4 is used to introduce activated sludge or anaerobic sludge into the fermentation tank 11, and a sludge control component, that is, a sludge solenoid valve 20, is connected to the sludge inlet 4; the bacterial liquid inlet 5 is used to introduce the bacterial liquid containing bacteria into the fermentation tank 11, and a bacterial liquid metering component, that is, a bacterial liquid metering pump 15, is connected to the bacterial liquid inlet 5. The special effect bacterial liquid for treating wastewater can be added into the fermentation tank 11 through the bacterial liquid metering pump 15; the nutrient solution inlet 6 is used to introduce the nutrient solution into the fermentation tank 11, and the nutrient solution inlet 6 is externally connected to a nutrient solution control component, that is, a nutrient solution metering pump 14. The nutrient agent for promoting the growth and reproduction of microorganisms can be quantitatively added into the fermentation tank 11 through the nutrient solution metering pump 14.

[0024] Of course, the above-mentioned water inlet solenoid valve 18, raw water solenoid valve 19, and sludge solenoid valve 20 can also be replaced by metering pumps, and the bacterial liquid metering pump 15 and nutrient solution metering pump 14 can also be replaced by solenoid valves. If control with input power is required, a metering pump is selected; if control without power input is required, a solenoid valve is selected, and it can be selected according to the actual situation.

[0025] Oxygen capacity regulation unit, which is used to send air into the fermentation tank 11 to ensure appropriate oxygen content in the fermentation tank; it includes an aeration port 7 and an aeration device 10. The aeration device 10 is arranged at the bottom inside the fermentation tank 11, and the aeration port 7 is arranged at the lower part of the side wall of the fermentation tank 11. The aeration port 7 is connected to the air inlet of the aeration device 10 and is used to supply oxygen to the microorganisms in the fermentation tank 11. In the sludge aerobic fermentation technology, the aeration device 10 can be customized and purchased according to the shape of the fermentation tank 11. In this embodiment, the aeration device 10 in the fermentation tank 11 has an annular aeration pipe. The aeration port 7 is externally connected to an aeration solenoid valve 21 and an aerator to provide a gas source. This design is a conventional operation familiar to those skilled in the art in specific applications and will not be elaborated further.

[0026] The oxygen capacity regulation unit further includes an on-line dissolved oxygen meter 24, which is arranged inside the fermentation tank 11 and is used to measure the oxygen content of the liquid in the fermentation tank 11. When the oxygen content is low, the aeration device 10 is controlled to work to increase the oxygen content of the bacterial liquid in the fermentation tank 11. When the oxygen content is sufficient, the aeration device 10 stops working.

[0027] Temperature regulation unit, which is used to control the internal temperature of the fermentation tank 11 and provide a suitable temperature for the growth and reproduction of microorganisms; specifically, the temperature regulation unit includes an industrial electric blanket 17 arranged on the side wall of the fermentation tank 11, which is used to realize the heating and heat preservation of the fermentation tank 11. The selection of the industrial electric blanket 17 is a conventional design familiar to those skilled in the art and can be customized or purchased according to requirements; in this embodiment, the industrial electric blanket is coated on the outer side wall of the fermentation tank 11. Using a heating blanket can make the fermentation tank 11 heat evenly and improve the heat preservation performance of the fermentation tank 11.

[0028] The temperature regulation unit further includes a liquid temperature sensor 25, which is arranged inside the fermentation tank 11 and is used to detect the temperature of the liquid in the fermentation tank 11. When the temperature is low, the industrial electric blanket 17 is controlled to work to increase the temperature inside the fermentation tank 11. When the temperature rises to a suitable temperature for the growth of microorganisms, the industrial electric blanket 17 is controlled to stop working. A smart temperature control instrument can also be used, and the heating of the industrial electric blanket can be controlled through the PID program of the smart temperature control instrument to achieve the effect of precise temperature control.

[0029] Discharging unit, which is used to output the liquid containing microbial flora from the fermentation tank 11 for subsequent transportation to the biochemical pool for sewage purification; specifically, the discharging unit includes a discharging port 8, a discharging pump 16 and a discharging solenoid valve 22. The discharging port 8 is arranged on the lower side wall of the fermentation tank 11. The discharging port 8 is connected to the discharging pump 16 through a pipeline, and the discharging solenoid valve 22 is arranged on the pipeline between the discharging port 8 and the discharging pump 16; the discharging pump 16 is used to provide power to pump out the liquid containing microbial flora that has completed amplification culture from the fermentation tank 11 and pump it to the biochemical pool, or it can also be pumped out to a storage tank for storage for subsequent use.

[0030] An on-line pH detector 23 and a liquid level gauge 26 are also provided on the fermenter 11, which are respectively used to monitor the pH value and the liquid level height in the fermenter 11.

[0031] A controller 13 is provided on the device housing 12, which is used to control each component to automatically monitor the living conditions of microorganisms in the fermenter 11 in real time and improve the survival rate of microorganisms in the fermenter 11; specifically, the controller 13 is electrically connected to the aeration device 10, the nutrient solution metering pump 14, the bacterial liquid metering pump 15, the discharge pump 16, the industrial electric blanket 17, the water inlet solenoid valve 18, the raw water solenoid valve 19, the sludge solenoid valve 20, the aeration solenoid valve 21, the discharge solenoid valve 22, the on-line dissolved oxygen analyzer 24, the on-line pH detector 23, the liquid temperature sensor 25 and the liquid level gauge 26. The controller 13 can be a single-chip microcomputer or other control systems in the prior art; the connection of the controller 13 with the aeration device 10, the nutrient solution metering pump 14, the bacterial liquid metering pump 15, the discharge pump 16, the industrial electric blanket 17, the water inlet solenoid valve 18, the raw water solenoid valve 19, the sludge solenoid valve 20, the aeration solenoid valve 21 and the discharge solenoid valve 22, as well as the model selection and installation of each device are all existing mature technologies and will not be elaborated here.

[0032] Specifically, a wireless transmission and reception module can also be integrated in the controller 13. When the program in the controller 13 is customized at the factory, the Internet of Things remote control and the corresponding user mobile phone APP operation program can also be designed to realize remote temperature signal detection and control. The controller 13 can control the feeding unit, the temperature regulation unit, the oxygen capacity regulation unit and the discharge unit. Through the controller 13, the cooperation of each unit can be realized, so that the device has good safety in the automatic operation state. Among them, the raw water solenoid valve 19, the sludge solenoid valve 20 and the aeration solenoid valve 21 also have the function of manual single opening and closing to be switched on and off at any time according to the detection situation.

[0033] An overflow port 1 is provided at the top of the side wall of the fermenter 11. When the materials in the fermenter 11 are excessive, they can be discharged through the overflow port 1. The overflow port 1 is externally connected to a sewage discharge pipe, which can prevent overflow in the device due to excessive feeding in case of faults in the liquid level control program, instrument, solenoid valve, etc., so as to improve the safety of the device operation.

[0034] A sewage discharge port 9 is provided at the bottom of the side wall of the fermenter 11, which is used to empty the materials inside the fermenter 11. As a conventional design familiar to those skilled in the art, the sewage discharge port 9 is externally connected to a manual ball valve, which is manually opened and closed as needed for emptying the materials inside the fermenter, facilitating the cleaning of the tank body and the replacement of strains.

[0035] The process of production and operation of this solution is roughly as follows: The controller 13 controls the opening of the water inlet solenoid valve 18 to send chlorine-removed clear water into the fermentation tank 11. The bacterial liquid metering pump 15 and the nutrient solution pump are controlled to send bacterial liquid and nutrient solution into the fermentation tank 11. The liquid level gauge 26 is used to measure the liquid level inside the fermentation tank 11. The controller 13 realizes precise control of the addition amount according to the liquid level height. Then, the controller 13 controls the temperature regulation unit, the oxygen capacity regulation unit, and the PH detection unit to make the temperature, oxygen capacity, and PH in the fermentation tank 11 suitable for the growth of the bacterial liquid. After culturing for a period of time, through random inspection, when the number of bacterial strains in the liquid in the fermentation tank 11 reaches the expected range, the expansion culture is completed. Then, an appropriate amount of sewage is added into the fermentation tank 11 through the raw water inlet 3, and an appropriate amount of sludge is added into the fermentation tank 11 through the sludge inlet 4 to cultivate the resistance of microorganisms, increase their adaptability and sewage treatment ability. After the cultivation is completed, the discharge solenoid valve 22 is opened to discharge the liquid.

[0036] Specifically: In the feeding stage, the controller 13 detects the liquid level value in the fermentation tank 11 through the liquid level gauge 26. When it is at a low level: the water level ≤ 0.2m, the water inlet solenoid valve 18 is opened to add clear water into the fermentation tank 11. When the water level ≥ 0.3m, the controller 13 controls the bacterial liquid metering pump 15 and the nutrient solution metering pump 14 to open, and the timing is approximately 30 minutes. The liquid containing microbial strains and the nutrient solution are added into the fermentation tank 11. At the same time, the controller 13 controls the industrial electric blanket 17 to work. The controller 13 heats the temperature to 40 - 60°C according to the temperature value of the liquid detected by the liquid temperature sensor in the fermentation tank 11. When the parameters in the fermentation tank 11 reach certain values, the controller 13 controls the opening or closing of the raw water solenoid valve 19, the sludge solenoid valve 20, and the aeration solenoid valve 21 in a timely manner according to the various temperature signals on the controller 13 panel, or they can also be manually opened or closed.

[0037] In the expansion culture stage: The controller 13 detects the liquid level value through the liquid level gauge 26. When it is at a high level: the water level ≥ 1.35m, the water inlet solenoid valve 18, the nutrient solution metering pump 14, and the bacterial liquid metering pump 15 are closed. The controller 13 detects the temperature in the fermentation tank 11 through the liquid temperature sensor 25. When the temperature ≥ 35°C, heat preservation starts. The controller 13 controls the set heating temperature of the industrial electric blanket 17 to be 35°C. The controller 13 adjusts the dissolved oxygen content in the fermentation tank 11 through the on-line dissolved oxygen meter 23 and the aeration equipment 10, and monitors the PH value in the fermentation tank 11 through the controller 11 panel. The culture time can be freely set (generally 16 - 24h).

[0038] In the discharging stage: When the cultivation time set by the controller 13 is completed, the industrial electric blanket 17 is turned off, the discharging pump 16 is turned on, and the discharging solenoid valve 22 is turned on. The liquid is discharged to the external storage tank or the biochemical pool through the discharging pump 16. When the water level is at a low level ≤ 0.2m, the discharging pump 16 is turned off, the discharging solenoid valve 22 is turned off, and the water inlet solenoid valve 18 is turned on to enter the next cultivation cycle.

[0039] To facilitate better understanding of the present utility model by those skilled in the art, the following are application examples of this solution:

[0040] Select a bacterial strain model of highly efficient salt-tolerant microbial inoculant (LZST-B Klebsiella variicola, LZST-L Bacillus cereus, LZST-H Enterobacter hormaechei). The inoculum size for seed culture expansion is 10 billion cfu / mL. Take an inoculation amount of 7.5 L (i.e., five-thousandths) and inoculate it into a 1.5 m 3 expansion device for 24 h. Control the temperature at 30 - 35 °C, the pH value at 6 - 9, the dissolved oxygen at 2 - 3 mg / L, and add 60 L of nutrients. At the end, the bacterial count in the 1.5 m 3 expansion device can reach 10 billion cfu / mL.

[0041] The amount of propylene oxide wastewater in an enterprise is 24,000 m 3 / d, and the influent water quality is as follows: COD 1000 mg / L, ammonia nitrogen 4 mg / L, salt content 20,000 - 30,000 mg / L, pH 7.2 - 8.2. Use this expansion equipment to expand the inoculant at 8 m 3 / d to treat this wastewater. After treatment, the effluent water quality is as follows: COD 45 - 50 mg / L, ammonia nitrogen 4 mg / L, salt content 20,000 - 30,000 mg / L, pH 6.5 - 7.0. The usage amount of the seed bacteria is saved by more than 20%, achieving low-cost and high-efficiency treatment of wastewater with low biodegradability.

[0042] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the technical solutions of the present utility model, rather than limitations on the specific implementation manners of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the claims of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An automated microbial culture expansion device, characterized in that: It includes a fermentation tank (11), a feed unit, a temperature regulation unit, an oxygen capacity regulation unit, a PH detection unit, and a discharge unit, which are respectively installed on the fermentation tank (11); The feed unit is arranged at the upper part of the fermentation tank (11), and includes a raw water inlet (3) and a sludge inlet (4) provided on the fermentation tank (11), a raw water control component installed on the raw water inlet (3), and a sludge control component provided on the sludge inlet (4); It further includes a controller (13), and the controller (13) is electrically connected to the raw water control component and the sludge control component respectively; the raw water control component controls the amount of sewage entering the fermentation pump according to the signal transmitted by the controller (13), and the sludge control component controls the amount of sludge entering the fermentation tank (11) according to the signal transmitted by the controller (13).

2. The automated microorganism culturing device according to claim 1, characterized in that: The raw water control component is a raw water solenoid valve (19), and the sludge control component is a sludge solenoid valve (20).

3. An automated microbial culture expansion device according to claim 1, characterized in that: The feed unit further includes a water inlet (2), a bacterial liquid inlet (5), and a nutrient solution inlet (6) provided on the fermentation tank (11), a water volume control component installed on the water inlet (2), a bacterial liquid control component installed on the bacterial liquid inlet (5), and a nutrient solution control component installed on the nutrient solution inlet (6); the water volume control component, the bacterial liquid control component, and the nutrient solution control component are electrically connected to the controller (13) respectively, and control the amount of water, bacterial liquid, and nutrient solution entering the fermentation tank (11) according to the signals transmitted by the controller (13).

4. The automated microorganism culturing device according to claim 3, wherein: The water volume control component is a water inlet solenoid valve (18), the bacterial liquid control component is a bacterial liquid metering pump (15), and the nutrient solution control component is a nutrient solution metering pump (14).

5. An automated microorganism culturing device according to claim 3, wherein: It further includes an overflow port (1), and the overflow port (1) is arranged at the top of the side wall of the fermentation tank (11), and its position is higher than the positions of the raw water inlet (3), the sludge inlet (4), the water inlet (2), the nutrient solution inlet (6), and the bacterial liquid inlet (5).

6. An automated microbial culture expansion device according to claim 1, characterized in that: The temperature regulation unit includes an industrial electric blanket (17) and a liquid temperature sensor (25), the industrial electric blanket (17) is wrapped around the outer peripheral surface of the fermentation tank (11), the liquid temperature sensor (25) is arranged on the fermentation tank (11), and the industrial electric blanket (17) and the liquid temperature sensor (25) are electrically connected to the controller (13) respectively.

7. An automated microorganism culture expansion device according to claim 1, characterized in that: The oxygen capacity regulation unit includes an on-line dissolved oxygen analyzer (24) and an aeration device (10), the on-line dissolved oxygen analyzer (24) is installed on the fermentation tank (11), the aeration device (10) is installed at the bottom inside the fermentation tank (11), and the controller (13) controls the start and stop of the aeration device (10) according to the signal transmitted by the on-line dissolved oxygen analyzer (24).

8. An automated microbial culture expansion device according to claim 1, characterized in that: The PH detection unit includes an on-line PH detector, which is installed on the fermentation tank (11) and is used to measure the PH value of the liquid in the fermentation tank (11), and the on-line PH detector is electrically connected to the controller (13).

9. An automated microorganism culturing device according to claim 1, characterized in that: The discharging unit includes a discharging port (8), a discharging solenoid valve (22) and a discharging pump (16). The discharging port (8) is arranged at the bottom of the fermentation tank (11). The inlet end of the discharging pump (16) is connected to the discharging port (8) through a pipeline. The discharging solenoid valve (22) is arranged on the pipeline between the discharging pump (16) and the discharging port (8). The discharging solenoid valve (22) and the discharging pump (16) are respectively electrically connected to the controller (13).

10. An automated microbial culture expansion device according to any one of claims 1-9, characterized in that: It further includes a liquid level gauge (26). The liquid level gauge (26) is installed on the fermentation tank (11). The liquid level gauge (26) is electrically connected to the controller (13).

Images