CN217202752U - Fermenting installation based on fungus liquid circulation - Google Patents

Abstract

The utility model discloses a fermentation device based on bacteria liquid circulation, which comprises a device body, wherein a fermentation tank and a solid-liquid separation cavity are formed inside the device body; the solid-liquid separation cavity is filled with sludge discharged by an activated sludge system, and the solid-liquid separation assembly extrudes the sludge to perform solid-liquid separation operation; kitchen garbage is filled in the fermentation tank; the fermentation device also comprises a communicating component and a self-priming pump component which is positioned on the side surface of the device body and communicated with the solid-liquid separation cavity and the fermentation tank. The fermentation device of the utility model adopts the layered design of the upper and lower distribution of the solid-liquid separation cavity and the fermentation tank, and realizes the functions of bacteria liquid circulation, heavy metal leaching and the like; indirect flow control of the filtrate is realized by utilizing the communicating component, and the functions of controlling the circulating quantity of the bacteria liquid and maintaining the stability of the fermentation tank are realized; the device circularly applies microorganisms to the cooperative treatment of the kitchen waste and the sludge, combines the fermentation and leaching time, simultaneously removes heavy metals and ferments, reduces the economic cost and improves the treatment efficiency.

Description

Fermenting installation based on fungus liquid circulation

Technical Field

The utility model relates to an environmental protection technology field especially relates to a fermenting installation based on fungus liquid circulation.

Background

With the enhancement of environmental protection awareness of people, the treatment of kitchen waste and sludge is gradually valued by people; the latest statistics show that the daily yield of the sludge in China at the present stage reaches 11.07 ten thousand tons, and the annual yield reaches 4000 ten thousand tons. Meanwhile, the annual output of kitchen waste in a single city in China averagely reaches about 7 hundred million tons, and the annual output of the kitchen waste is increased year by year along with the continuous popularization of waste classification. The actual treatment capacity of the current treatment factory in China is far less than the production amount, so that the current situations of kitchen waste accumulation, sludge random discharge and even landfill in China are caused.

At present, the method for treating the kitchen waste mainly comprises an aerobic composting method, a landfill method, a crushing direct discharge method and the like; however, most of them have the disadvantages of long treatment time, large occupied area of factories, aggravation of soil salinization and the like. The main measure for treating sludge is the activated sludge method, but the method generates a large amount of excess sludge which contains many organic matters and activated bacteria and cannot be completely treated.

Relevant researches show that the efficiency of performing common fermentation treatment on excess sludge and kitchen waste is much higher than that of performing fermentation treatment on the excess sludge and the kitchen waste independently.

Therefore, in view of the above technical problems, those skilled in the art need to develop a fermentation apparatus based on bacteria liquid circulation, which performs a common fermentation treatment by using excess sludge and kitchen waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an utilize excess sludge and kitchen garbage to carry out common fermentation treatment, reduce running cost and capital construction expense, can compensate current processing method processing time long, the shortcoming that treatment effeciency is low, have the fermenting installation based on fungus liquid circulation of better energy saving and emission reduction benefit.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model discloses a fermenting installation based on fungus liquid circulation, this fermenting installation includes:

the device comprises a device body, wherein two cavities are formed in the device body and respectively comprise a fermentation tank positioned at the bottom of the device body and a solid-liquid separation cavity positioned at the upper part of the fermentation tank;

the solid-liquid separation component is integrated in a solid-liquid separation cavity of the device body;

the solid-liquid separation cavity is filled with sludge discharged by an activated sludge system, and the solid-liquid separation assembly extrudes the sludge to perform solid-liquid separation operation;

kitchen waste is filled in the fermentation tank;

the fermentation device further comprises:

the communicating component is positioned between the solid-liquid separation cavity and the fermentation tank and is used for communicating the solid-liquid separation cavity with the fermentation tank; and

and the self-suction pump assembly is positioned on the side surface of the device body and communicated with the solid-liquid separation cavity and the fermentation tank.

Further, the upper end of the device body is provided with an end cover;

the solid-liquid separation assembly includes:

a platen mechanism integrated with the end cap; and

the baffle is fixedly connected with the inner wall of the device body and is configured into a conical baffle structure which obliquely extends from one side close to the inner wall of the device body to the center of the baffle;

a filter screen is arranged above the baffle plate, and the filter screen is a conical filter screen which obliquely extends from one side close to the inner wall of the device to the center of the filter screen;

a filtrate space is reserved between the baffle and the filter screen;

and the sludge is placed on the filter screen and is pressed and held by the pressing plate mechanism to perform solid-liquid separation operation.

Further, the platen mechanism includes:

the surface of the pressing plate is uniformly provided with bulges;

the driving structure is connected with the pressing plate and drives the pressing plate to move;

the driving structure comprises a rotating shaft part integrated on the end cover and a mechanical arm assembled and fixed with the rotating shaft part;

one end of the mechanical arm is connected with the rotating shaft part, and the other end of the mechanical arm extends to the upper surface of the pressing plate and is connected with the pressing plate;

the rotating shaft part drives the mechanical arm and the pressing plate to rotate along the axial direction of the mechanical arm and the pressing plate;

the periphery of the rotating shaft part is sleeved with a mounting sleeve;

the mechanical arm is divided into a first mechanical arm and a second mechanical arm which are hinged with each other;

the first mechanical arm is hinged with the mounting sleeve through a first rotating seat, and the second mechanical arm is hinged with the pressing plate through a second rotating seat;

four sets of the mechanical arms are arranged along the circumferential direction of the rotating shaft part.

Furthermore, the side surface of the device body is communicated with a leachate and an internal air extraction pipe, and the leachate and the internal air extraction pipe are communicated with the filtrate space;

leachate generated by oxidation of sludge in the solid-liquid separation cavity and air in the solid-liquid separation cavity are pumped out through the leachate and an internal air pumping pipe;

an upper liquid outlet hole is formed in the center of the baffle;

the communicating component is arranged at the upper liquid outlet hole, and filtrate obtained by the sludge in the solid-liquid separation cavity through solid-liquid separation operation is conveyed into the fermentation tank through the communicating component.

Further, the communication assembly includes:

the upper end of the outer barrel and the baffle are connected with the upper liquid outlet hole;

the flow control structure is positioned at the upper part of the outer cylinder; and

the conical cylinder is positioned at the lower part of the outer cylinder and is of a conical structure, and the lower end of the conical cylinder is configured into a lower liquid outlet hole;

and a valve is arranged at the lower liquid outlet hole, and the communicating state of the communicating component is controlled by the valve.

Furthermore, a plurality of groups of rotating wheels are arranged in the flow control structure side by side, and a plurality of rotating blades extending in an arc shape are arranged at intervals in the circumferential direction of the rotating wheels;

filtrate flowing out of the solid-liquid separation cavity passes through the rotating blades and drives the rotating wheels to rotate, and then the filtrate is conveyed to the conical cylinder through the rotation of the rotating wheels and is discharged to the fermentation tank through the lower liquid outlet hole.

Further, the self-primer pump assembly comprises:

a self-priming pump;

a first pipeline communicated with the fermentation tank; and

and one end of the second pipeline is communicated with the first pipeline, and the other end of the second pipeline extends to the solid-liquid separation cavity.

Further, an ultrasonic probe is arranged in the fermentation tank, and the ultrasonic probe adopts a generator with the frequency of 22 kHz;

the fermentation tank carries out bacteria killing operation on the kitchen garbage in the fermentation tank through the ultrasonic probe.

Furthermore, the upper part of the fermentation tank, which is opposite to one side of the self-suction pump assembly, is communicated with a biogas discharge pipe.

In the technical scheme, the utility model provides a pair of fermenting installation based on fungus liquid circulation has following beneficial effect:

the fermentation device of the utility model adopts the layered design of the upper and lower distribution of the solid-liquid separation cavity and the fermentation tank, and realizes the functions of bacteria liquid circulation, heavy metal leaching and the like; indirect flow control of the filtrate is realized by utilizing the communicating component, and the functions of controlling the circulating quantity of the bacteria liquid and maintaining the stability of the fermentation tank are realized; the device circularly applies microorganisms to the cooperative treatment of the kitchen waste and the sludge, combines the fermentation and leaching time, simultaneously removes heavy metals and ferments, reduces the economic cost and improves the treatment efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic structural diagram of a fermentation apparatus based on bacteria liquid circulation according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fermentation apparatus based on bacteria liquid circulation according to an embodiment of the present invention;

fig. 3 is a first structural sectional view of a fermentation device based on bacteria liquid circulation according to an embodiment of the present invention;

fig. 4 is a structural sectional view of a second fermentation device based on bacteria liquid circulation according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a pressing plate mechanism of a fermentation device based on bacteria liquid circulation according to an embodiment of the present invention;

fig. 6 is a front view of a pressing plate mechanism of a fermentation device based on bacteria liquid circulation provided by the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a valve of a communicating component of a fermentation device based on bacteria liquid circulation according to an embodiment of the present invention.

Description of reference numerals:

1. a device body; 2. a solid-liquid separation chamber; 3. a fermentation tank; 4. a platen mechanism; 5. a communicating component; 6. a self-priming pump assembly;

101. an end cap;

201. a baffle plate; 202. filtering with a screen; 203. a filtrate space; 204. leachate and internal air extraction pipe;

301. an ultrasonic probe; 302. a biogas discharge pipe;

401. pressing a plate; 402. a rotating shaft part; 403. a first robot arm; 404. a second mechanical arm; 405. installing a sleeve; 406. a protrusion; 407. a first mounting seat; 408. a second mounting seat;

501. an outer cylinder; 502. a rotating wheel; 503. rotating the blades; 504. an upper liquid outlet hole; 505. a conical cylinder; 506. a lower liquid outlet hole; 507. rotating the rod; 508. an arc-shaped plate;

601. a self-priming pump; 602. a first pipeline; 603. a second pipeline.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

See fig. 1-7;

the fermenting installation based on fungus liquid circulation of this embodiment, this fermenting installation includes:

the device comprises a device body 1, wherein two cavities are formed in the device body 1, namely a fermentation tank 3 positioned at the bottom of the device body 1 and a solid-liquid separation cavity 2 positioned at the upper part of the fermentation tank 3;

a solid-liquid separation component integrated in the solid-liquid separation cavity 2 of the device body 1;

the solid-liquid separation cavity 2 is filled with sludge discharged by an activated sludge system, and the solid-liquid separation operation is carried out by extruding the sludge through a solid-liquid separation component;

kitchen waste is filled in the fermentation tank 3;

the fermentation device further comprises:

a communicating component 5 which is positioned between the solid-liquid separation cavity 2 and the fermentation tank 3 and is used for communicating the solid-liquid separation cavity 2 and the fermentation tank 3; and

and the self-sucking pump assembly 6 is positioned on the side surface of the device body 1 and communicated with the solid-liquid separation cavity 2 and the fermentation tank 3.

Specifically, the embodiment discloses a fermentation device for applying microorganisms to the cooperative treatment of kitchen waste and sludge in a circulating manner. The device takes a device body 1 as a main body, the interior of the device is divided into two areas, namely a solid-liquid separation cavity 2 at the upper layer and a fermentation tank 3 at the lower layer. Residual sludge discharged by an activated sludge system is placed in the solid-liquid separation cavity 2, solid-liquid separation is realized by using a solid-liquid separation component to obtain filtrate required by the fermentation tank, and meanwhile, the filtrate is utilized to perform fermentation reaction with internal kitchen garbage in the fermentation tank.

According to the principle that the kitchen waste and excess sludge are fermented in a synergistic mode to remarkably improve the gas production rate, the device disclosed by the embodiment firstly utilizes mixed acidophilic bacteria to leach heavy metals in sludge, then filtrate obtained after fermentation materials and excess sludge are extruded and filtered is introduced into the fermentation tank 3 to be mixed with the kitchen waste, methane bacteria are utilized to carry out anaerobic fermentation, the filtrate containing microorganisms is recycled after fermentation is completed, and filter residues are used for field composting.

Based on the fermentation device disclosed in this embodiment, a mass ratio of 3: 2, kitchen waste and sludge. When the device is used for the first time, the residual sludge discharged from the activated sludge system is firstly put into the solid-liquid separation cavity 2, mixed acidophilic bacteria are added, and various heavy metals are leached out through oxidation. After leaching for 4 days, the leachate and the air in the solid-liquid separation chamber 2 are pumped out. The kitchen waste is put into a fermentation tank 3 and is pretreated by an ultrasonic probe 301. And the solid-liquid separation component extrudes and filters the residual sludge after heavy metal removal, filter residues are used for composting, and filter liquor flows to the fermentation tank 3 to be fermented together with the kitchen waste.

In the fermentation process, the temperature in the fermentation device is maintained at about 26 ℃, and the PH is between 7.0 and 7.8, so that the normal gas production of methane fermentation bacteria (methane bacteria) is kept, the normal work of mesophilic bacteria in sludge filtrate is also kept, and the fermentation environment with multiple bacteria coexisting is realized. While the fermentation tank 3 works, the solid-liquid separation cavity 2 pretreats the residual sludge. After the heavy metal leaching liquid is pumped out, the fermented material is pumped into a solid-liquid separation cavity 2 and is extruded and filtered by a pressing plate. The filtrate flows downwards for the next fermentation, and the solid is used for field composting.

Preferably, the upper end of the apparatus body 1 of the present embodiment has an end cap 101;

the solid-liquid separation assembly comprises:

a platen mechanism 4 integrated with the end cap 101; and

the baffle 201 is fixedly connected with the inner wall of the device body 1, and the baffle 201 is configured into a conical baffle structure which obliquely extends from one side close to the inner wall of the device body 1 to the center of the baffle 201;

a filter screen 202 is arranged above the baffle 201, and the filter screen 202 is configured as a conical filter screen extending from one side close to the inner wall of the device to the center of the filter screen 202 in an inclined manner;

a filtrate space 203 is reserved between the baffle 201 and the filter screen 202;

the sludge is placed on the filter screen 202 and is pressed and held by the pressing plate mechanism 4 to perform solid-liquid separation operation.

Firstly, the present embodiment further defines the structure of the solid-liquid separation assembly located in the solid-liquid separation chamber 2, which mainly acts on the sludge in the solid-liquid separation chamber 2, the center of the baffle 201 at the lower part is provided with a through hole, the position above the baffle 201 at a certain distance is fixed with a filter screen 202, in order to assist the liquid drainage, the baffle 201 and the filter screen 202 are both configured to be conical structures, and the pressing plate mechanism 4 at the upper part can move and press the sludge.

Wherein, above-mentioned clamp plate mechanism 4 includes:

the pressing plate 401 is provided with protrusions 406 uniformly distributed on the surface of the pressing plate 401;

a driving structure connected with the pressing plate 401 and driving the pressing plate 401 to move;

the driving structure comprises a rotating shaft part 402 integrated on the end cover 101 and a mechanical arm assembled and fixed with the rotating shaft part 402;

one end of the mechanical arm is connected with the rotating shaft part 402, and the other end of the mechanical arm extends to the upper surface of the pressing plate 401 and is connected with the pressing plate 401;

the rotating shaft part 402 drives the mechanical arm and the pressing plate 401 to rotate along the axial direction;

a mounting sleeve 405 is sleeved on the periphery of the rotating shaft part 402;

the robot arm is divided into a first robot arm 403 and a second robot arm 404 which are hinged to each other;

the first mechanical arm 403 is hinged with the mounting sleeve 405 through a first rotating seat 407, and the second mechanical arm 404 is hinged with the pressing plate 401 through a second rotating seat 408;

four sets of robot arms are arranged along the circumferential direction of the rotating shaft portion 402.

The structure of the pressing plate mechanism 4 disclosed in this embodiment can be obtained that the pressing plate 401 can be rotated along the axial direction thereof by the rotational driving of the rotating shaft portion 402, and the hinge of the mechanical arm can drive the pressing plate 401 to reciprocate up and down along the axial direction. The outer diameter of the pressing plate 401 of the present embodiment is slightly smaller than the inner diameter of the apparatus body 1 to reduce resistance during movement of the pressing plate 401.

In order to facilitate the discharge of leachate and air generated when various heavy metals are leached through oxidation after mixed acidophilic bacteria are added, the lateral surface of the device body 1 is communicated with a leachate and internal air extraction pipe 204, and the leachate and internal air extraction pipe 204 is communicated with a filtrate space;

leachate generated by oxidation of sludge in the solid-liquid separation cavity 2 and air in the solid-liquid separation cavity 2 are extracted through the leachate and an internal air extraction pipe 204;

secondly, the center of the baffle 201 of the embodiment is provided with an upper liquid outlet 504;

the communicating component 5 is arranged at the upper liquid outlet 504, and the filtrate obtained by the sludge in the solid-liquid separation cavity 2 through the solid-liquid separation operation is conveyed into the fermentation tank 3 through the communicating component 5.

Wherein, the communicating member 5 of the present embodiment includes:

the upper end of the outer barrel 501 and the baffle 201 are connected with the upper liquid outlet 504;

a flow control structure located at the upper part of the outer tub 501; and

a cone 505 which is located at the lower part of the outer cylinder 501 and has a conical structure, and the lower end of the cone 505 is configured as a lower liquid outlet 506;

a valve is arranged at the lower liquid outlet 506, and the communication state of the communication assembly 5 is controlled by the valve.

A plurality of groups of rotating wheels 502 are arranged in parallel inside the flow control structure, and a plurality of rotating blades 503 extending in an arc shape are arranged at intervals in the circumferential direction of the rotating wheels 502;

the filtrate flowing out from the solid-liquid separation chamber 2 passes through the rotating blades 503 and drives the rotating wheel 502 to rotate, and then the filtrate is conveyed to the conical cylinder 505 through the rotation of the rotating wheel 502 and discharged to the fermentation tank 3 through the lower liquid outlet hole 506.

The communicating component 5 of the embodiment not only can be used as a communicating structure of the solid-liquid separation cavity 2 and the fermentation tank 3, but also can control the flow of the filtrate to a certain extent. The communicating component is arranged at the upper liquid outlet hole 504 of the baffle plate 201, a plurality of groups of rotating wheels 502 are arranged in parallel in the upper part of the outer barrel 501, the rotating wheels 502 are provided with rotating blades 503 extending in an arc shape, and when filtrate contacts the rotating blades 503, the rotating wheels 502 can be driven to rotate, so that the filtrate is gradually conveyed. As an expanded implementation manner, the flow control structure of this embodiment may be composed of a rotating wheel 502 and a speed reducer, when the bacteria liquid flows down along the pipeline, the bacteria liquid pushes the rotating wheel 502 to rotate, so as to drive a gear at the back of the rotating wheel 502 to rotate, and the bacteria liquid flowing through is indirectly measured through the gear. When the amount of the passing bacteria liquid reaches a set threshold value, the valve at the bottom of the baffle plate is closed, and the bacteria liquid does not enter the fermentation tank 3 any more.

As the structure of the valve at the lower liquid outlet 506, the valve is rotatably connected with a plurality of rotating rods 507 at the lower liquid outlet 506, one end of each rotating rod 507 is rotatably connected with the bottom of the outer barrel, the other end of each rotating rod 507 is connected with an arc-shaped plate 508, and the plurality of arc-shaped plates 508 can form the valve for sealing the lower liquid outlet 506. According to the discharge condition of the filtrate, the position of the arc-shaped plate 508 can be adjusted to control the liquid outlet of the filtrate.

In this embodiment, a through hole is formed in the middle of the baffle 201, i.e., the upper liquid outlet 504, and a communicating component 5 for passing bacteria liquid is connected below the upper liquid outlet 504. The valve can control whether the liquid generated by the solid-liquid separation part passes through or not. When the solid-liquid separation part is used for removing heavy metals from the residual sludge, the valve is closed, and the leachate is remained at the baffle 201. When the excess sludge and the fermented material are squeezed, the channel is opened, and the bacteria liquid flows back to the fermentation tank 3 from the channel. When the returned bacteria liquid reaches a threshold value, the valve is also closed, so that the condition that the fermentation tank environment is influenced by excessive bacteria liquid is prevented.

Preferably, the self-primer pump assembly 6 of the present embodiment comprises:

a self-priming pump 601;

a first pipe 602 communicating with the fermentation tank 3; and

a second pipeline 603 having one end communicated with the first pipeline 02 and the other end extended to the solid-liquid separation chamber 2.

An ultrasonic probe 301 is arranged in the fermentation tank 3, and the ultrasonic probe 301 adopts a generator with the frequency of 22 kHz;

the fermentation tank 3 performs a sterilization operation on the kitchen waste inside by the ultrasonic probe 301.

Next, the fermentation tank 3 of the present embodiment is connected to a biogas discharge pipe 302 at an upper portion of the self-priming pump unit 6.

The fermentation tank 3 is positioned at the bottom of the device, and the shell is made of heat-insulating materials. A material inlet and outlet is formed in the bottom side of the side edge of the fermenting tank 3, a self-sucking pump 6 is used for sucking materials out of the material inlet and outlet or putting kitchen waste into the material inlet and outlet, and the material inlet and outlet are closed when fermentation is started. The fermentation bacteria are organic matter decomposing bacteria and methane bacteria, and the whole fermentation process is anaerobic.

Secondly, a biogas discharge pipe 302 is arranged at the opposite side of the material inlet and outlet, and the generated biogas flows out and is collected from the material inlet and outlet. Preferably, the biogas discharging pipe 302 of this embodiment is provided with a light baffle, and when the biogas is discharged, the airflow can jack up the baffle, so as to flow out. When outside air enters, the outside air is blocked by the blocking piece, so that the stability of the living environment of the methane bacteria is ensured. Similarly, a one-way valve can be used as a functional component of the biogas discharge pipe 302 for controlling the discharge of biogas, so that only biogas can be discharged, and air cannot enter the device.

An ultrasonic probe 301 is arranged on the inner wall of the fermentation tank 3, and a generator with the frequency of 22kHz is adopted to work for 13 minutes. After the kitchen waste is fed into the fermentation tank 3, the ultrasonic probe 301 works to kill bacteria in the kitchen waste and break cells of the kitchen waste. After the ultrasonic probe 301 finishes working, the filtrate in the solid-liquid separation cavity 2 flows into the fermentation tank 3. The sterilization of ultrasonic wave is accomplished according to the cavitation principle, supersonic generator sends the ultrasonic wave to form the longitudinal wave in the propagation of kitchen wet refuse, produce corresponding expansion interval and compression interval in certain region in turn, the pressure in these expansion interval and compression interval changes easily and takes place the cavitation, thereby make originally gas separation dissolved in liquid form the microbubble, these microbubbles can present pressure more than 50000kPa and temperature more than 5000 ℃ in the moment of splitting, thereby make the virus in the kitchen refuse lose the activity, destroy the cell wall of multiple bacterium and then cause its death.

When the device is in actual operation, the mass ratio of the added kitchen waste to the bacteria liquid is 20:1, and researches show that the efficiency of methane bacteria for degrading the kitchen waste at 35 ℃ is highest. After the kitchen waste is treated for 7 days by the device, according to a formula:

wherein:

m1 mass of bacterial liquid, kg;

m 2-total mass of kitchen waste, kg;

m 3-the mass of the treated bacteria liquid and the kitchen waste, kg;

mu-degradation rate of kitchen garbage.

The calculation shows that the degradation rate of the kitchen waste can reach 86.32% through the device, the degradation rate of the kitchen waste which is subjected to anaerobic bacteria digestion treatment at present is 76.2%, the degradation rate of the kitchen waste is improved by 10.12%, and more heavy metals can be treated through the device.

The fermentation bacteria used by the device are organic substance decomposing bacteria and methane bacteria which are anaerobic bacteria, and the fermentation environment is anaerobic. Therefore, the acidophilic bacteria die after entering the fermentation tank along with the filtrate, and the fermentation environment is not influenced. In the circulating bacterial liquid, the thalli enter the next working procedure along with the living environment of the thalli, and a large amount of methane can be quickly generated.

The water content is important for influencing the fermentation of the microorganisms, so that researches show that the water content of about 81 percent can create a proper anaerobic environment for the microorganisms, and is proper for the normal growth and fermentation of the microorganisms. The water content of the kitchen waste is generally 81.325%, the fermentation condition can be achieved, the water content of the kitchen waste after dehydration is about 60%, and the bacteria liquid of the device is circulated by taking compressed water as a carrier while being utilized, so that the requirement on the anaerobic environment in the fermentation process can be met. The methane bacteria which play a main role in fermentation are taken as an example, the growth period is very slow and can be propagated for one generation only after several days or even dozens of days, so that the methane bacteria are required to be added every day under the normal fermentation condition, the cost of the methane bacteria is higher, the device recycles the bacteria liquid, the cost is saved, and meanwhile, along with the increase of time, the methane bacteria can be propagated to realize the purpose of circulation. The time required by the common fermentation of the sludge and the kitchen waste is 8 days, and the sludge and the kitchen waste are circularly treated by the bacteria liquid of the device only for 5 days, so that the efficiency is improved by nearly 1 time.

In the technical scheme, the utility model provides a pair of fermenting installation based on fungus liquid circulation has following beneficial effect:

the fermentation device of the utility model adopts the layered design of the upper and lower distribution of the solid-liquid separation cavity 2 and the fermentation tank 3, and realizes the functions of bacteria liquid circulation, heavy metal leaching and the like; indirect flow control of the filtrate is realized by utilizing the communicating component 5, and the functions of controlling the circulating quantity of the bacteria liquid and maintaining the stability of the fermentation tank are realized; this device is with the coprocessing of microorganism cyclic application kitchen garbage and mud, combines fermentation and the leaching time, makes to remove heavy metal and fermentation and goes on simultaneously, reduces economic cost, improves the treatment effeciency.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (9)

1. Fermenting installation based on fungus liquid circulation, its characterized in that, this fermenting installation includes:

the device comprises a device body (1), wherein two cavities are formed in the device body (1), namely a fermentation tank (3) positioned at the bottom of the device body (1) and a solid-liquid separation cavity (2) positioned at the upper part of the fermentation tank (3);

a solid-liquid separation component integrated in the solid-liquid separation cavity (2) of the device body (1);

the solid-liquid separation cavity (2) is filled with sludge discharged by an activated sludge system, and the solid-liquid separation assembly extrudes the sludge to perform solid-liquid separation operation;

kitchen waste is filled in the fermentation tank (3);

the fermentation device further comprises:

a communicating component (5) which is positioned between the solid-liquid separation cavity (2) and the fermentation tank (3) and is used for communicating the solid-liquid separation cavity (2) and the fermentation tank (3); and

and the self-sucking pump assembly (6) is positioned on the side surface of the device body (1) and communicated with the solid-liquid separation cavity (2) and the fermentation tank (3).

2. The fermentation device based on bacteria liquid circulation according to claim 1, characterized in that the upper end of the device body (1) is provided with an end cover (101);

the solid-liquid separation assembly includes:

a platen mechanism (4) integrated with the end cap (101); and

the baffle (201) is fixedly connected with the inner wall of the device body (1), and the baffle (201) is configured into a conical baffle structure which obliquely extends from one side close to the inner wall of the device body (1) to the center of the baffle (201);

a filter screen (202) is arranged above the baffle plate (201), and the filter screen (202) is configured as a conical filter screen which obliquely extends from one side close to the inner wall of the device to the center of the filter screen (202);

a filtrate space (203) is reserved between the baffle (201) and the filter screen (202);

the sludge is placed on the filter screen (202) and is pressed and held by the pressing plate mechanism (4) to carry out solid-liquid separation operation.

3. The fermentation device based on bacteria liquid circulation according to claim 2, wherein the pressing plate mechanism (4) comprises:

the pressing plate (401), the surface of the pressing plate (401) is uniformly distributed with bulges (406);

the driving structure is connected with the pressure plate (401) and drives the pressure plate (401) to move;

the driving structure comprises a rotating shaft part (402) integrated on the end cover (101) and a mechanical arm assembled and fixed with the rotating shaft part (402);

one end of the mechanical arm is connected with the rotating shaft part (402), and the other end of the mechanical arm extends to the upper surface of the pressing plate (401) and is connected with the pressing plate (401);

the rotating shaft part (402) drives the mechanical arm and the pressing plate (401) to rotate along the axial direction of the mechanical arm and the pressing plate;

the periphery of the rotating shaft part (402) is sleeved with a mounting sleeve (405);

the mechanical arm is divided into a first mechanical arm (403) and a second mechanical arm (404) which are hinged with each other;

the first mechanical arm (403) is hinged with the mounting sleeve (405) through a first rotating seat (407), and the second mechanical arm (404) is hinged with the pressing plate (401) through a second rotating seat (408);

four sets of the robot arms are arranged along the circumferential direction of the rotating shaft portion (402).

4. The fermentation device based on bacteria liquid circulation of claim 2, wherein the side of the device body (1) is communicated with a leachate and internal air extraction pipe (204), and the leachate and internal air extraction pipe (204) is communicated with the filtrate space (203);

leachate generated by oxidation of sludge in the solid-liquid separation cavity (2) and air in the solid-liquid separation cavity are extracted through the leachate and an internal air extraction pipe (204);

an upper liquid outlet hole (504) is formed in the center of the baffle plate (201);

the communicating component (5) is arranged at the upper liquid outlet hole (504), and filtrate obtained by solid-liquid separation operation of sludge in the solid-liquid separation cavity (2) is conveyed into the fermentation tank (3) through the communicating component (5).

5. The fermentation device based on bacteria liquid circulation according to claim 4, characterized in that the communication component (5) comprises:

the upper end of the outer barrel (501) and the baffle (201) are connected with the upper liquid outlet hole (504);

a flow control structure positioned at the upper part of the outer cylinder (501); and

a conical barrel (505) which is positioned at the lower part of the outer barrel (501) and has a conical structure, wherein the lower end of the conical barrel (505) is configured as a lower liquid outlet hole (506);

and a valve is arranged at the lower liquid outlet (506), and the communicating state of the communicating component (5) is controlled by the valve.

6. The fermentation device based on bacteria liquid circulation of claim 5, wherein a plurality of sets of rotating wheels (502) are arranged side by side in the flow control structure, and a plurality of rotating blades (503) extending in an arc shape are arranged at intervals in the circumferential direction of the rotating wheels (502);

filtrate flowing out of the solid-liquid separation cavity (2) passes through the rotating blades (503) and drives the rotating wheels (502) to rotate, and then the filtrate is conveyed to the conical barrel (505) through the rotation of the rotating wheels (502) and is discharged to the fermentation tank (3) through the lower liquid outlet hole (506).

7. The fermentation device based on bacteria liquid circulation according to claim 4, wherein the self-priming pump assembly (6) comprises:

a self-priming pump (601);

a first pipe (602) communicating with the fermentation tank (3); and

and the second pipeline (603) is communicated with the first pipeline (602) at one end and extends to the solid-liquid separation cavity (2) at the other end.

8. The fermentation device based on bacteria liquid circulation of claim 7, characterized in that an ultrasonic probe (301) is installed in the fermentation tank (3), and the ultrasonic probe (301) adopts a generator with frequency of 22 kHz;

the fermentation tank (3) carries out bacteria killing operation on the kitchen garbage in the fermentation tank through the ultrasonic probe (301).

9. The fermentation device based on bacteria liquid circulation of claim 8, wherein the fermentation tank (3) is communicated with a methane discharge pipe (302) at the upper part of one side of the self-priming pump assembly (6).

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