CN113493733A - Electrolytic cell-anaerobic fermentation integral type mixed anaerobic fermentation device - Google Patents

Electrolytic cell-anaerobic fermentation integral type mixed anaerobic fermentation device Download PDF

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CN113493733A
CN113493733A CN202110670098.1A CN202110670098A CN113493733A CN 113493733 A CN113493733 A CN 113493733A CN 202110670098 A CN202110670098 A CN 202110670098A CN 113493733 A CN113493733 A CN 113493733A
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fermentation
anaerobic fermentation
tank
electrolytic cell
air pressure
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罗立娜
瞿优培
祖健
孙勇
郑国香
张鸿琼
王明
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Northeast Agricultural University
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Abstract

The invention discloses an electrolytic cell-anaerobic fermentation integrated mixed anaerobic fermentation device, and particularly relates to the technical field of waste mixed anaerobic fermentation equipment. The fermentation tank is communicated with the air pressure adjusting chamber through a rotating paddle, and a piston with a spring is arranged in the air pressure adjusting chamber and is communicated with the electrolytic tank through meshes and a side pipe. According to the fermentation device, through the design of an internal space structure, the piston in the air pressure adjusting chamber is pushed to move by utilizing the pressure of methane generated in the fermentation tank, the air pressure is changed along with the running state of the fermentation tank, the adding amount of sulfate wastewater after electrolysis is automatically controlled, and the sulfate wastewater flows into the fermentation tank through a designed path to be mixed with the straws for fermentation, so that the degradation of lignocellulose in the straws is accelerated, the fermentation speed and the yield of methane are improved, the resource utilization of the sulfate wastewater is realized, and the dynamic relation between the running state of the fermentation tank and the amount of the substrate is established.

Description

Electrolytic cell-anaerobic fermentation integral type mixed anaerobic fermentation device
Technical Field
The invention relates to an anaerobic fermentation device, in particular to an electrolytic cell-anaerobic fermentation integrated mixed anaerobic fermentation device, and belongs to the technical field of biogas fermentation.
Background
At present, the pH value of the high-concentration sulfate-containing wastewater discharged by part of enterprises is low, the yield is high, the degradation is difficult, most of the enterprises have to invest a large amount of funds to ensure that the wastewater reaches the discharge standard, the economic benefit of the enterprises is seriously influenced, and the environment is polluted if the wastewater is not treated properly. Research shows that low-concentration sulfate wastewater can promote the degradation of volatile fatty acid (such as propionic acid, butyric acid and the like) and improve the methane content in the anaerobic fermentation process, and the low-concentration sulfate wastewater is used as an anaerobic fermentation raw material and is an effective way for harmless treatment and resource utilization, but the amount of the added sulfate wastewater cannot be too much, otherwise, the sulfate wastewater can generate an inhibiting effect on the anaerobic fermentation due to the existence of a large amount of sulfate radicals, so that the removal of the sulfate radicals is a key measure for improving the use amount of the sulfate wastewater. The existing methods for removing sulfate radicals include a chemical precipitation method, an ion exchange method, an electrolytic method and the like, wherein the electrolytic method has the advantages of no secondary pollution, simple process, high sulfate radical removal rate and the like, and has wide prospects. In addition, the dry matter content in the straw is high, the water content is low, a large amount of water needs to be added in the anaerobic fermentation process, and the lignocellulose structure can normally enter a gas production state only through pretreatment, so that the problem of nutrition imbalance exists in single fermentation, and the popularization and application of the straw methane are seriously affected, so that the mixed fermentation is a key measure for solving the bottleneck problem of the anaerobic fermentation of the straw materials. At present, the research on anaerobic fermentation of sulfate wastewater and straws is carried out, and a primary effect is obtained, but the problems of low sulfate wastewater consumption, non-treatment of sulfate wastewater and anaerobic fermentation in the same reactor, transfer by a booster pump, high energy consumption, complex operation and the like exist, and the difficulty of mixed fermentation is high.
Disclosure of Invention
Aiming at the problems, the invention designs an electrolytic tank-anaerobic fermentation integrated mixed anaerobic fermentation device, sulfate wastewater after electrolysis is added into an anaerobic fermentation tank to pretreat straws, nutrition is provided for anaerobic fermentation, the starting speed of straw anaerobic fermentation is improved, the fermentation period is shortened, the yield of methane is improved, the sulfate wastewater is treated in a pollution-free manner, the energy consumption is saved, and the environment is protected.
The technical scheme of the invention is as follows: an electrolytic cell-anaerobic fermentation integrated mixed anaerobic fermentation device comprises a discharge hole (1), stirring blades (2), a feed inlet (3), a sewage outlet (4), a wastewater inlet (5), a piston (6) with a spring, an air pressure adjusting chamber (7), rotating blades (8), a booster pump (9), an electromagnetic valve a (10), an electromagnetic valve b (11), an electromagnetic valve c (12), a pressure gauge b (13), an electrolysis device (14), an air suction type gas collecting device (15), a side pipe (16), an electrolytic cell (17), a fermentation tank (18), an inoculated sludge inlet (19), a control cabinet (20), a jacket (21) and a pressure gauge a (22).
The working process of the invention is as follows:
the feed inlet (3) and the inoculated sludge inlet (19) are opened to sequentially add the crushed straws and the fermentation inoculum into the fermentation tank (18), and the stirring paddle (2) is started to intermittently stir so as to uniformly mix the straws and the fermentation inoculum. And opening a waste water inlet (5) and adding the high-concentration sulfate waste water into an electrolytic cell (17). After the readings of the pressure gauge a (22) and the pressure gauge b (13) are determined to be the local atmospheric pressure value, the electrolysis device (14) is started. The switch of the control cabinet (20) is opened, and the automatic control of the reaction device can be realized. Along with the fermentation, the pressure of the fermentation tank (18) is continuously increased, the piston (6) with the spring in the air pressure adjusting chamber (7) is compressed due to the pressure generated by the methane, the meshes of the side pipe (16) connected with the air pressure adjusting chamber (7) are exposed along with the rising of the spring, and the generated methane can enter the air pressure adjusting chamber (7) along the paddle (8) which can freely rotate at the upper part of the fermentation tank (18) and enter the electrolytic tank (17) along the side pipe (16). The electrolyzed sulfate wastewater flows into the air pressure adjusting chamber (7) through the side pipe (16), flows through the rotating blade (8) to enable the helical blade to rotate freely to drive the sulfate wastewater to spray evenly to the inside of the fermentation tank (18), and simultaneously, the stirring blade (2) is opened to enable the materials in the fermentation tank (18) to be mixed evenly. The pressure indication of the pressure gauge a (22) is continuously increased due to the methane flowing in the electrolytic cell (17), when the pressure reaches the pressure set by the pressure gauge a (22), the electromagnetic valve a (10) and the electromagnetic valve c (12) are opened, and the gas enters the air-extracting gas collecting device (15). At this time, the pressure in the electrolytic cell (17) is reduced, and when the pressure is reduced to the set pressure, the control cabinet (20) closes the solenoid valve a (10) and the solenoid valve c (12). Meanwhile, the pressure in the air pressure adjusting chamber (7) is reduced to enable the piston (6) with the spring to move downwards to block the meshes, and the electrolyzed sulfate wastewater stops entering the fermentation tank (18). When the amount of the sulfate wastewater entering the fermentation tank (18) is excessive, the acidification operation of the system is unstable, or the pressure in the air pressure adjusting chamber (7) exceeds the pressure corresponding to the elastic limit of the spring, the control cabinet automatically or manually opens the electromagnetic valve b (11), the electromagnetic valve c (12) and the booster pump (9), the biogas in the air suction type gas collecting device (15) flows back to the air pressure adjusting chamber (7), the piston (6) with the spring moves downwards to emergently cut off meshes communicated with the electrolysis tank (17) and the fermentation tank (18), and the amount of the sulfate wastewater added into the fermentation tank (18) is controlled. When the pressure in the fermentation tank (18) is too low and the gas production rate is low after the fermentation time is longer, the straw raw materials in the fermentation tank (18) are basically and completely degraded, and at the moment, a discharge port (1) and a feed port (3) in the fermentation tank (18) are opened, and fresh raw materials are added to enter the gas production state again. When the fermentation time is short and the pressure in the fermentation tank (18) is too low and the gas production rate is low, the gas cannot push the piston (6) with the spring to move upwards, which indicates that the fermentation condition is not good and the fermentation tank does not enter a normal operation state, the inoculation sludge inlet (19) is opened to add the inoculation sludge, and the amount of microorganisms in the fermentation tank (18) is increased so as to quickly recover to the normal operation state.
The invention has reasonable structural design, the design of the electrolytic cell, the fermentation tank and the air pressure adjusting chamber can better utilize the change of pressure to control the adding amount of the sulfate wastewater after electrolysis, and the automatic control is carried out by the cooperation of the control cabinet, the electromagnetic valve and the pressure gauge, thereby realizing the high-efficiency mixed fermentation of the high-concentration sulfate wastewater and the straws.
Compared with the prior art, the invention has the following beneficial effects: the electrolytic treatment of high-concentration sulfate wastewater and straw biogas fermentation are carried out in one reactor through the design of the electrolytic tank, the fermentation tank and the air pressure regulating chamber, the circulation path of biogas can be well controlled, so that the change of pressure in the fermentation tank is controlled, the dynamic relation between the running state in the fermentation tank and the amount of sulfate wastewater, straw raw materials and inoculated sludge is established, automatic control is carried out through the matching of a control cabinet, an electromagnetic valve and a pressure gauge, meanwhile, the requirements of sulfate wastewater treatment, straw anaerobic fermentation pretreatment and nutrition matching are met, the operation is simple and convenient, the cost is low, and the application in large and medium biogas engineering is facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention; the right side of fig. 1 is a left side view of the device a of the present invention, about the connection of the side tube to the air pressure adjustment chamber (7).
The respective reference numerals in fig. 1: the device comprises a discharge port (1), a stirring paddle (2), a feed port (3), a sewage discharge port (4), a wastewater inlet (5), a piston (6) with a spring, an air pressure adjusting chamber (7), a rotating paddle (8), a booster pump (9), an electromagnetic valve a (10), an electromagnetic valve b (11), an electromagnetic valve c (12), a pressure gauge b (13), an electrolysis device (14), a gas extraction type gas collecting device (15), a side pipe (16), an electrolysis cell (17), a fermentation tank (18), an inoculation sludge inlet (19), a control cabinet (20), a jacket (21) and a pressure gauge a (22).
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate orientation words, which are used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that elements, devices, and the like which are referred to must operate according to specific orientations and defined operations and methods, configurations in the specification, and such orientation terms do not constitute limitations of the present invention.
The embodiment provides an electrolytic cell-anaerobic fermentation integrated mixed anaerobic fermentation device, which is shown in a combined figure 1, and the reaction device comprises an air pressure adjusting chamber (7), an electrolytic cell (17) and a fermentation tank (18). Specifically, the whole device is divided into an upper part and a lower part, the central position of the upper part is an air pressure adjusting chamber (7), the outside of the air pressure adjusting chamber (7) is an electrolytic cell (17), the lower part is a fermentation tank (18), and the volume ratio of the electrolytic cell (17) to the fermentation tank (18) is 1:10 to 15, preferably 1: and 12, specifically determining according to the amount of sulfate wastewater needing to be treated and the fermentation state.
Specifically, a discharge hole (1) and a feed hole (3) are respectively arranged at the lower left corner and the upper right corner of the fermentation tank (18), an inoculation sludge inlet (19) is arranged at the upper right part, and a stirring paddle (2) is arranged at the bottom. And (3) opening the feed inlet (3) and the inoculated sludge inlet (19) at the beginning of fermentation, and adding the crushed straws and the inoculated sludge into the fermentation tank (18) in sequence. The mass ratio of the added straws to the inoculated sludge is 1: 20-30% (the optimal proportion is to keep TS at 8%), and the total volume of the straw and the inoculated sludge accounts for 70% of the effective total volume of the fermentation tank. After being mixed in proportion, because soluble substances in the straws are preferentially degraded, a large amount of gas can be generated after a delay, and the gas generated in the fermentation tank (18) can enter the air pressure adjusting chamber (7) through the rotary paddle blade (8). The top of the fermentation tank (18) is an inclined plane, and an included angle between the inclined plane and a horizontal plane (a horizontal line at the bottom of the fermentation device) is 15-30 degrees, so that the generated gas can be ensured to enter the air pressure adjusting chamber (7) to the maximum extent.
Specifically, the air pressure adjusting chamber (7) comprises a piston (6) with a spring, a gas return system and a pressure gauge b (13). The piston with spring can move upwards in the air pressure adjusting chamber (7) when being pushed by air pressure, and the moving distance is related to the pressure of generated air. The more gas is generated and the greater the pressure, the greater the distance the piston moves up in the gas pressure adjustment chamber. After the piston moves, the air pressure adjusting chamber (7) and the meshes on the side wall of the electrolytic cell are exposed in sequence, gas enters the air extraction type gas collecting device (15) through the meshes on the side wall of the electrolytic cell and the side pipe (16), the electromagnetic valve a (10) and the electromagnetic valve c (12), meanwhile, electrolyzed waste water can be uniformly sprayed to the upper part of the fermentation tank (18) through the side pipe (16), the meshes on the side wall of the electrolytic cell and the rotating blade (8), the stirring blade 2 and the straws are mixed and then treated to improve the degradation rate of lignocellulose in the anaerobic fermentation process, the pressure of the air pressure adjusting chamber (7) is reduced after the gas enters the air extraction type gas collecting device (15), the piston (6) moves downwards to block the meshes again, and the electrolyzed waste water stops entering the fermentation tank (18). Further, the amount of the sulfate wastewater added after electrolysis is related to the amount of the generated gas and the pressure, and the pressure is adjusted so that the mass ratio of the mass of the sulfate wastewater added to the total mass of the materials in the fermentation tank is 1: 16-25, wherein the mass ratio of the inoculated sludge to the inoculated sludge is 1: 3 to 5. The mesh is designed to allow the gas in the pressure regulating chamber and the wastewater in the electrolytic cell to pass through smoothly, and the flow of the wastewater and the gas is controlled by the number of exposed meshes. It should be noted that the pressure gauge b (13), the electromagnetic valve b (11), the electromagnetic valve c (12) and the booster pump (9) can be automatically controlled through the control cabinet (20).
The lower left corner and the upper right corner of the electrolytic cell (17) are respectively provided with a sewage outlet (4) and a wastewater inlet (5), the inner side wall is provided with a side pipe (16), and the inside is provided with an electrolytic device (14). Specifically, the pressure gauge a (22) is arranged at the upper part of the sewage draining outlet (4), and the upper part of the electrolytic cell (17) is communicated with the air extraction type gas collecting device (15) through the electromagnetic valve a (10) and the electromagnetic valve c (12) to realize the automatic control of the collection of gas. It needs to be further explained that the cathode and the anode of the electrolysis device (14) are powered by an external direct current power supply positioned at the top end of the reactor, the electrode material selection principle is mainly considered to be favorable for the electrochemical reaction of sulfate ions, finally, a lead sheet is selected as the anode, an inert conductive material is selected as the cathode, the electrolysis voltage is 15V, and the sewage discharge outlet (4) and the anode of the electrolysis device (14) are arranged at the same side to facilitate slag discharge. Further, the electrolytic cell (17) is communicated with the air pressure adjusting chamber (7) through a mesh and a side pipe (16).
In the fermentation process, the feeding and discharging amount and the adding frequency of the inoculated sludge are determined according to the fermentation condition in the fermentation tank (18) by the discharging port (1), the feeding port (3) and the inoculated sludge inlet (19). Specifically, when the fermentation tank is in a normal fermentation state and the gas production rate is low, the feed inlet (3) and the discharge outlet (1) are opened, fresh straws are added, the mass of the added straws is 1/50 of the total mass in the fermentation tank, the feed and discharge amounts are equal, and new materials are continuously added into the fermentation tank according to the ratio after the gas production peak is over each time. When the pH value in the fermentation tank is lower than 7.0, acidification phenomenon occurs and the gas production rate is lower, the inoculated sludge inlet (19) and the inoculated sludge outlet (1) are opened, the feeding and discharging amount is equal, the added inoculated sludge amount is 20-30% of the total mass in the fermentation tank, the stirring paddle (2) is started after feeding and discharging each time to uniformly mix the materials in the fermentation tank (18), and the materials are stirred for 1 time every day for a fixed time and for 15min each time. After the straws are pretreated by the electrolyzed sulfate wastewater, the VS methane production of the straws can be improved by 10-30%, and the volumetric gas production rate is improved by 10-40%.
Example 2
The embodiment provides a specific method for manually controlling the reaction device to add the sulfate wastewater.
Because the volume ratio of the electrolytic tank (17) to the fermentation tank (18) is 1: 10-15, the mass ratio of the added sulfate wastewater to the inoculated sludge is 1: 3-5, and the electrolysis time is very short compared with the whole fermentation period, so that the sulfate wastewater needs to be supplemented to the electrolytic tank (17) for many times for continuous fermentation, and the fermentation substrate is continuously supplemented to the fermentation tank (18).
It should be noted that, because of the fermentation, when the electromagnetic valve a (10) is not opened, the electrolytic cell (17) is always filled with biogas, and if the waste water inlet (5) is opened, a part of biogas is lost, which results in waste of energy.
Further, the control cabinet (20) is closed to enable manual control. And (3) opening the electromagnetic valve a (10) and the electromagnetic valve c (12), wherein the methane of the electrolytic cell (17) continuously flows into the air-extracting gas collecting device (15), the reading of the pressure gauge a (22) is continuously reduced, and when the state of near vacuum is achieved, closing the electromagnetic valve a (10) and the electromagnetic valve c (12).
It should be noted that the extraction gas collecting device (15) is characterized in that an extraction pump is additionally arranged to realize auxiliary extraction, so that the biogas can be rapidly recovered.
Preferably, the waste water inlet (5) is opened for adding sulfate waste water. After the adding is finished, the waste water inlet (5) is closed, and the control cabinet (20) is opened again to realize automatic control.
Example 3
The embodiment provides a specific method for controlling the reaction device to emergently cut off the connection between the electrolytic tank (17) and the fermentation tank (18).
When the pressure gauge a (22) fails to open the electromagnetic valve a (10) and the electromagnetic valve c (12) automatically, the pressure of the electrolytic cell (17) is continuously increased, the spring piston is continuously compressed, and once the spring is excessively compressed and exceeds the elastic limit, the spring fails, so that the self-control performance of the whole fermentation device is lost, and even the fermentation process is damaged and interrupted. Therefore, the connection between the electrolytic cell (17) and the fermentation tank (18) needs to be cut off in an emergency.
When the amount of the sulfate wastewater entering the fermentation tank (18) is excessive, the system can have unstable acidification operation, so that the gas production is low, and the connection between the electrolytic tank (17) and the fermentation tank (18) needs to be cut off urgently.
Specifically, when the piston is compressed, the indication number of the pressure gauge b (13) is increased, and when the pressure is increased to the pressure corresponding to 90% of the set elastic limit of the spring, the control cabinet (20) controls the electromagnetic valve c (12), the electromagnetic valve b (11) and the booster pump (9) to be opened, and then the methane flows back to the air pressure adjusting chamber (7).
Further, the piston is moved downward by the pressure difference to block the connection ports of the electrolytic bath (17) and the fermentation bath (18), thereby restoring the spring to the original length.
It should be noted that the booster pump (9) can perform a boosting function to prevent the pressure of the backflow biogas from being insufficient to eliminate the pressure difference. The supercharging effect and the opening and closing of the booster pump can be appropriately adjusted according to the condition of the spring recovery. Therefore, the problems of spring failure and system acidification in the automatic control process can be prevented.
Preferably, the electromagnetic valve a (10) is manually opened at last, excessive methane enters the air extraction type gas collecting device (15), and the reaction device is recovered to be normal after the pressure gauge a (22) is overhauled.
Preferably, the inoculation sludge port (19) is opened and a proper amount of inoculum is added to solve the problem of excessive sulfate wastewater inflow, thereby recovering normal gas production.
Example 4
This embodiment provides a specific method for reducing the lag phase by manually controlling the reaction device.
In the initial phase, the fermentation tank (18) does not immediately produce biogas because the microorganisms are adapted to the new environment, so that the installation has a lag phase.
Specifically, in order to shorten the lag phase, the slag discharging port (4) is opened after the electrolysis of the electrolytic tank (17) in the initial stage of the reaction device is completed, the electrolyzed sulfate wastewater is collected, the sludge inoculating port (19) is opened, and the electrolyzed sulfate wastewater is added into the fermentation tank (18), so that the lag phase can be shortened, and the starting speed of anaerobic fermentation is accelerated.
Further, when the anaerobic fermentation is finished, the discharge hole (1) is opened, the fermented material is discharged, and the fermented material is added again in the sludge inoculation port (19) to restart the anaerobic fermentation.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (8)

1. An electrolytic cell-anaerobic fermentation integrated mixed anaerobic fermentation device comprises a discharge hole (1), stirring blades (2), a feed inlet (3), a sewage outlet (4), a wastewater inlet (5), a piston (6) with a spring, an air pressure adjusting chamber (7), rotating blades (8), a booster pump (9), an electromagnetic valve a (10), an electromagnetic valve b (11), an electromagnetic valve c (12), a pressure gauge b (13), an electrolysis device (14), an air suction type gas collecting device (15), a side pipe (16), an electrolytic cell (17), a fermentation tank (18), an inoculated sludge inlet (19), a control cabinet (20), a jacket (21) and a pressure gauge a (22).
2. The electrolytic cell-anaerobic fermentation integrated hybrid anaerobic fermentation device according to claim 1, wherein: the integral device is divided into an upper part and a lower part, the central position of the upper part is an air pressure adjusting chamber (7), the outside of the air pressure adjusting chamber (7) is provided with an electrolytic cell (17), and the lower part is provided with a fermentation tank (18); the volume ratio of the electrolytic tank (17) to the fermentation tank (18) is 1: 10-15; the included angle between the bottom of the electrolytic cell (17) (the top of the fermentation tank (18)) and the horizontal plane (the horizontal line at the bottom of the fermentation device) is 15-30 degrees.
3. The electrolytic tank-anaerobic fermentation integrated mixing anaerobic fermentation device as claimed in claim 2, wherein the left lower corner and the right upper corner of the fermentation tank (18) are respectively provided with the discharge port (1) and the feed port (3), the right upper part is provided with the inoculated sludge inlet (19), and the bottom is provided with the stirring paddle (2).
4. The electrolytic cell-anaerobic fermentation integrated hybrid anaerobic fermentation device as claimed in claim 2, wherein a sewage draining outlet (4) and a wastewater inlet (5) are respectively arranged at the lower left corner and the upper right corner of the electrolytic cell (17), and a pressure gauge a (22) is arranged at the upper left part of the sewage draining outlet (4); the upper part of the electrolytic cell (17) is communicated with a gas extraction type gas collecting device (15) through an electromagnetic valve a (10) and an electromagnetic valve c (12); the air pressure in the electrolytic cell (17) can be automatically controlled through a pressure gauge b (22) and a control cabinet (20).
5. The electrolytic cell-anaerobic fermentation integrated hybrid anaerobic fermentation device as claimed in claim 2, wherein a piston (6) with a spring is arranged in the air pressure adjusting chamber (7), and the piston (6) with the spring can move up and down in the air pressure adjusting chamber (7) through the spring; the upper part of the air pressure adjusting chamber (7) is provided with a pressure gauge b (13) which is connected with an air extraction type gas collecting device (15) through a booster pump (9), an electromagnetic valve b (11) and an electromagnetic valve c (12), and the automatic control of the air pressure is realized through a control cabinet (20).
6. The electrolytic tank-anaerobic fermentation integrated mixing anaerobic fermentation device as claimed in claim 2, characterized in that the fermentation tank (18) is communicated with the air pressure adjusting chamber (7) through a rotating blade (8); the air pressure adjusting chamber (7) is communicated with meshes on the side wall of the electrolytic cell and a side pipe (16).
7. The electrolytic cell-anaerobic fermentation integrated hybrid anaerobic fermentation device as claimed in claim 4, wherein the operation parameters of the electrolysis device (14) are 15V/12A, lead sheets are used as anode, and inert conductive materials are used as cathode; the sewage draining port (4) and the anode (lead sheet) of the electrolysis device (14) are arranged on the same side, so that slag is convenient to discharge.
8. The electrolytic tank-anaerobic fermentation integrated mixed anaerobic fermentation device as claimed in claim 2, wherein the gas in the fermentation tank (18) can enter the gas extraction type gas collection device (15) through the rotary paddle (8), the side wall mesh of the electrolytic tank and the side pipe (16), the electromagnetic valve a (10) and the electromagnetic valve c (12), and the electrolyzed wastewater can also enter the fermentation tank (18) through the side pipe (16), the side wall mesh of the electrolytic tank and the rotary paddle (8).
CN202110670098.1A 2021-06-17 2021-06-17 Electrolytic cell-anaerobic fermentation integral type mixed anaerobic fermentation device Pending CN113493733A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003300096A (en) * 2002-02-06 2003-10-21 Mitsubishi Heavy Ind Ltd Method for anaerobic digestion of high-concentration sludge and apparatus for the same
CN102060357A (en) * 2010-12-07 2011-05-18 南京大学 High salinity wastewater electrolytic oxidation treatment device
CN102352309A (en) * 2011-10-21 2012-02-15 南京工业大学 Electrolytically promoted anaerobic fermentation apparatus and application method thereof
KR20140076965A (en) * 2012-12-13 2014-06-23 디에이치엠(주) Fabricating machine and its method of which organic effluent from bio gas plants can be used for liquid fertilizer
CN105154475A (en) * 2015-10-20 2015-12-16 北京国能中电能源有限责任公司 Method and device for rapidly starting anaerobic fermentation of kitchen waste to generate biogas
CN106011176A (en) * 2016-07-01 2016-10-12 河海大学 Method for producing hydrogen from residual sludge by anaerobic fermentation and microbial electrolysis cell coupling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003300096A (en) * 2002-02-06 2003-10-21 Mitsubishi Heavy Ind Ltd Method for anaerobic digestion of high-concentration sludge and apparatus for the same
CN102060357A (en) * 2010-12-07 2011-05-18 南京大学 High salinity wastewater electrolytic oxidation treatment device
CN102352309A (en) * 2011-10-21 2012-02-15 南京工业大学 Electrolytically promoted anaerobic fermentation apparatus and application method thereof
KR20140076965A (en) * 2012-12-13 2014-06-23 디에이치엠(주) Fabricating machine and its method of which organic effluent from bio gas plants can be used for liquid fertilizer
CN105154475A (en) * 2015-10-20 2015-12-16 北京国能中电能源有限责任公司 Method and device for rapidly starting anaerobic fermentation of kitchen waste to generate biogas
CN106011176A (en) * 2016-07-01 2016-10-12 河海大学 Method for producing hydrogen from residual sludge by anaerobic fermentation and microbial electrolysis cell coupling

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