CN216150641U - Kitchen waste treatment device - Google Patents
Kitchen waste treatment device Download PDFInfo
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- CN216150641U CN216150641U CN202121772471.6U CN202121772471U CN216150641U CN 216150641 U CN216150641 U CN 216150641U CN 202121772471 U CN202121772471 U CN 202121772471U CN 216150641 U CN216150641 U CN 216150641U
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Abstract
The utility model provides a kitchen waste treatment device. This kitchen garbage processing apparatus includes feeding unit, retort, mud pipe, drain pipe and microorganism electrolytic device, and microorganism electrolytic device includes 2 at least fibreboards, 2 at least wires and constant voltage power supply, and the positive negative pole of constant voltage power supply is connected with the wire looks electricity respectively and corresponds formation anodal wire and negative pole wire, runs through retort tank wall and is connected with the carbon fibre board that sets up in retort tank respectively, and constant voltage power supply setting is outside at the retort, and the fibre inter-plate is noninterfere. The kitchen waste enters the reaction tank through the feeding unit, reacts under the microbial electrolysis device to generate methane, and sludge and sewage generated by the reaction are discharged through the sludge discharge pipe and the water discharge pipe. The kitchen waste treatment device provided by the utility model can effectively accelerate the conversion of volatile fatty acid and effectively strengthen the activity of methanogens, further stabilize anaerobic digestion reaction and improve the methane yield of a system in the kitchen waste treatment process.
Description
Technical Field
The utility model belongs to the field of garbage treatment, and particularly relates to a kitchen garbage treatment device.
Background
The kitchen waste commonly called swill refers to domestic waste formed in the process of domestic consumption of residents, and comprises residual meal in restaurant, dining room and other catering industries, waste in daily cooking of residents and the like. The kitchen waste is rich in organic substances, is easy to rot and deteriorate, emits foul smell, is bred with harmful substances such as mosquitoes, flies, mycotoxins, pathogenic microorganisms and the like, and has bad influence on the surrounding atmosphere and environmental sanitation, but can be made into animal feed, organic fertilizer and biological energy after being reasonably treated, so that the kitchen waste is a high-value biomass resource.
At present, the kitchen waste treatment technologies at home and abroad can be divided into two main categories, non-biological treatment and biological treatment technologies according to treatment media. The non-biological treatment technology mainly refers to the traditional garbage treatment modes, such as incineration and landfill, and also refers to the non-biological treatment technologies of emerging dehydrated feed, vacuum fried feed, mechanical crushing and the like; compared with other treatment technologies, the biological treatment technology mainly comprises anaerobic digestion, aerobic composting and the like, and by adopting the anaerobic fermentation methane production technology to treat the kitchen waste, biogas can be continuously generated, organic waste is changed into valuable, and meanwhile, the unification of environmental benefit, social benefit and economic benefit can be obtained. The kitchen waste is a good substrate for producing biogas through anaerobic fermentation, but the kitchen waste is easy to acidify in the fermentation process, and the fermentation stability is not high. Research shows that compared with low-temperature (25 ℃) fermentation and high-temperature (55 ℃) fermentation, although the fermentation effect of the kitchen waste is most stable in a medium-temperature (35 ℃) environment, the acidification speed of the fermentation process is high and can be finished generally within 1-3 days, volatile fatty acid can be rapidly generated and reaches the concentration for inhibiting the reaction, the methane production efficiency of anaerobic digestion is further influenced, and even the methane production process of anaerobic digestion is stopped.
SUMMERY OF THE UTILITY MODEL
In view of the problems of the existing kitchen waste anaerobic fermentation technology, the main object of the present invention is to provide a kitchen waste treatment device, which can effectively accelerate the conversion of volatile fatty acid and simultaneously effectively enhance the activity of methanogens, further stabilize anaerobic digestion reaction and increase the methane yield of the system in the waste treatment process.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a kitchen waste treatment device which comprises a feeding unit, a reaction tank, a sludge discharge pipe, a drain pipe and a microbial electrolysis device, wherein the feeding unit is arranged on the reaction tank;
the feeding unit is communicated with the lower part of the reaction tank;
the sludge discharge pipe is communicated with the bottom of the reaction tank; and the drain pipe is communicated with the top of the reaction liquid of the reaction tank.
The microbial electrolysis device can comprise at least 2 carbon fiber plates, at least 2 leads and a stabilized voltage power supply; the positive electrode and the negative electrode of the voltage-stabilized power supply are respectively electrically connected with the lead wires and correspondingly form a positive lead wire and a negative lead wire; the positive lead and the negative lead are respectively connected with the carbon fiber plate; the stabilized voltage supply is arranged outside the reaction tank, the carbon fiber plates are arranged in the tank body of the reaction tank, and the carbon fiber plates are not interfered with each other; the lead penetrates through the wall of the reaction tank; the utility model discloses a methane production device, including constant voltage power supply, wire, carbon fiber plate, reaction tank, reduction reaction, formation microorganism electrolysis, the constant voltage power supply the wire, carbon fiber plate with the reaction liquid in the retort forms closed circuit, and carbon fiber plate can form negative and positive two-stage under the constant voltage power supply effect, and the organic matter can take place oxidation reaction on the positive pole surface in the jar, can take place reduction reaction on the negative pole surface to form microorganism electrolysis, effectively strengthen the activity of methanogen when effectively accelerating the conversion of volatile fatty acid, further stabilize anaerobic digestion reaction, improve the methane yield of system.
In the kitchen waste treatment device, preferably, the feeding unit comprises a feeding pump and a feeding pipe, and the feeding pipe is communicated with the lower part of the reaction tank; the feed pump is arranged in the pipeline of the feed pipe and used for feeding the kitchen waste.
In the kitchen waste treatment device, preferably, the kitchen waste treatment device further comprises an internal circulation heating unit for assisting in heating the reaction liquid in the reaction tank;
the internal circulation heating unit includes: an inner water inlet pipe, a steam-water mixer, an inner circulation upper pipe and an inner circulation lower pipe; one end of the inner water inlet pipe is communicated with the middle part of the reaction tank, and the other end of the inner water inlet pipe is communicated with the steam-water mixer;
one end of the internal circulation upper pipe is communicated with the steam-water mixer, and the other end of the internal circulation upper pipe is communicated with the space inside the reaction tank and above the top of the reaction liquid;
one end of the internal circulation lower pipe is communicated with the steam-water mixer, and the other end of the internal circulation lower pipe is communicated with the bottom of the reaction tank;
the steam-water mixer is provided with a steam inlet for inputting steam for heating the water inlet of the inner water inlet pipe;
and a first valve is arranged in the inner water inlet pipe to control the water inlet of the inner water inlet pipe.
In the kitchen waste treatment device, preferably, the internal circulation heating unit may further include at least one water circulation pump, and the water circulation pump is communicated with the steam-water mixer to stably circulate the reaction solution fully mixed with the steam;
one end of the internal circulation upper pipe is communicated with the circulating water pump, and the other end of the internal circulation upper pipe is communicated with the space inside the reaction tank and above the top of the reaction liquid, so that the upper circulation is realized;
one end of the internal circulation lower pipe is communicated with the circulating water pump, and the other end of the internal circulation lower pipe is communicated with the bottom of the reaction tank, so that the lower circulation is realized.
In the kitchen waste treatment device, preferably, the internal circulation heating unit further includes a second valve and a third valve; the second valve can be arranged in a pipeline of the internal circulation upper pipe and controls water outlet of the internal circulation upper pipe; the third valve can be arranged in a pipeline of the internal circulation lower pipe and controls the water outlet of the internal circulation lower pipe;
at least 1 thermometer for measuring the temperature of the upper and lower parts in the reaction tank; the thermometer is arranged in the middle of the reaction tank, the measuring part of the thermometer penetrates through the wall of the reaction tank and extends into the reaction tank, and the display part of the thermometer is positioned outside the reaction tank.
In the kitchen waste treatment device, the thermometer runs through the tank wall of the reaction tank, the measuring part (such as a temperature sensing bulb) of the thermometer is positioned in the reaction liquid of the reaction tank, and the display part (indicator) of the thermometer is positioned on the outer wall of the reaction tank, so that the temperature in the reaction tank can be monitored and adjusted conveniently and timely.
The temperature gauges can respectively measure the temperature of the upper part and the lower part in the reaction tank, and when the measured temperature of the upper part is lower than a set value, the second valve is opened, and the steam heats the internal circulation upper pipe pipeline; and when the measured temperature of the lower part is lower than a set value, starting a third valve, and heating the internal circulation pipe laying pipeline by using the steam.
In the kitchen waste treatment device, preferably, the end of the inner circulation upper pipe, which is communicated with the space inside the reaction tank and above the top of the reaction liquid, is an inclined water outlet, and the water outlet direction and the gravity direction form a certain angle, so that turbulent flow can be formed in the reaction tank, and the reaction liquid in the reaction tank can be uniformly heated;
the internal circulation low tube with the one end that the reaction tank bottom is linked together is the inclined plane delivery port, goes out the water direction and forms certain angle with the gravity direction, does benefit to form the torrent in the retort, makes the interior reaction liquid uniform heating of retort.
Preferably, the kitchen waste treatment device further comprises a stirrer, wherein the stirrer comprises a stirring shaft, a stirring motor and at least 1 stirring blade, and the stirring blades are arranged on the stirring shaft in a surrounding manner and stir the reaction liquid in the reaction tank, so that the reaction liquid is mixed more uniformly and reacts stably;
the stirring motor is arranged on the outer wall of the reaction tank;
the stirring shaft penetrates through the tank wall of the reaction tank, one end of the stirring shaft is connected with the stirring motor, and the other end of the stirring shaft extends to a position below the liquid level of the reaction tank.
Foretell kitchen garbage processing apparatus, it is preferred, this kitchen garbage processing apparatus still include positive negative pressure protection device, positive negative pressure protection device with inside the retort the space of reaction liquid top is linked together, and real time monitoring adjusts pressure in the retort reduces the potential safety hazard.
Preferably, the kitchen waste treatment device further comprises a biogas pretreatment device, wherein the biogas pretreatment device is communicated with the space inside the reaction tank and above the top of the reaction liquid, and is used for pretreating biogas generated by reaction in the reaction tank.
In the kitchen waste treatment device, preferably, the voltage-stabilized power supply is 0.7V, so that the microorganism electrolysis is more stable;
a sludge discharge valve is arranged in the pipeline of the sludge discharge pipe and can discharge bottom sludge generated by the reaction tank;
a first electromagnetic flowmeter is arranged in the feeding pipeline, so that the feeding quantity in the feeding pipe can be conveniently monitored;
and a second electromagnetic flowmeter is arranged in the inner water inlet pipe, so that the circulating volume of the reaction liquid in the inner water inlet pipe is monitored conveniently.
In the kitchen waste treatment device, preferably, the reaction tank is further coated with a heat insulation layer.
The utility model has the outstanding effects that:
the kitchen waste treatment device can effectively accelerate the conversion of volatile fatty acid and simultaneously effectively strengthen the activity of methanogens, further can stabilize anaerobic digestion reaction and improve the methane yield of a system in the kitchen waste treatment process;
the kitchen waste treatment device can effectively control the temperature and the water inlet and outlet flow in the kitchen waste treatment process, and greatly improves the practicability of the device;
the kitchen waste treatment device can continuously generate biogas while treating kitchen waste, and obtains the unification of environmental benefits, social benefits and economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of the kitchen waste treatment device of the present invention.
The reference numbers illustrate:
1-a reaction tank; 2-feeding pipe; 21-a first electromagnetic flow meter; 22-a feed pump; 3-a thermometer; 41-stirring blade; 42-a stirring shaft; 43-a stirring motor; 5-positive and negative voltage protection devices; 61-stabilized power supply; 62-a wire; 63-carbon fiber plate; 71-a first valve; 72-a second electromagnetic flow meter; 73-inner water inlet pipe; 74-steam-water mixer; 75-a circulating water pump; 76-a second valve; 77-upper pipe of internal circulation; 78-a third valve; 79-internal circulation lower pipe; 8-a biogas pretreatment device; 9-a sludge discharge pipe; 91-a mud valve; 10-a drain pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The "top position of the reaction solution" is the horizontal liquid surface position of the reaction solution, and the "space inside the reaction tank and above the top of the reaction solution" is the space above the horizontal liquid surface of the reaction solution inside the reaction tank, and is based on the orientation structure shown in the drawing. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes embodiments of the present invention based on the overall configuration thereof.
As shown in fig. 1, a kitchen waste treatment device according to an embodiment of the present invention includes a feeding unit, a reaction tank 1, a sludge discharge pipe 9, a drain pipe 10, and a microbial electrolysis device;
the feeding unit is communicated with the lower part of the reaction tank 1;
the sludge discharge pipe 9 is communicated with the bottom of the reaction tank 1; the drain pipe 10 is communicated with the top position of the reaction liquid of the reaction tank 1.
The microorganism electrolysis device can comprise at least 2 carbon fiber plates 63, at least 2 leads 62 and a stabilized voltage power supply 61; the positive electrode and the negative electrode of the regulated power supply 61 are respectively electrically connected with the lead 62, and a positive lead 62 and a negative lead 62 are correspondingly formed; the positive lead 62 and the negative lead 62 are respectively connected with the carbon fiber plate 63; the stabilized voltage power supply 61 is arranged outside the reaction tank 1, the carbon fiber plates 63 are arranged in the tank body of the reaction tank 1, and the carbon fiber plates 63 are not interfered with each other; the lead wire 62 penetrates through the wall of the reaction tank 1; stabilized voltage supply 61, wire 62, carbon fiber plate 63 and the reaction liquid in retort 1 form closed circuit, carbon fiber plate 63 can form negative and positive two-stage under the effect of stabilized voltage supply 61, and the organic matter can take place oxidation reaction on the positive pole surface in the jar, can take place reduction reaction on the negative pole surface to form the microorganism electrolysis, effectively strengthen the activity of methanogen when effectively accelerating the conversion of volatile fatty acid, further stabilize anaerobic digestion reaction, improve the methane yield of system.
In the embodiment, the reaction tank 1 is an enamel assembly structure, self-locking bolts and sealant are adopted for assembly, the sludge discharge pipe 9 and the water discharge pipe 10 are made of UPVC materials, and the reaction tank is connected with a flange in an adhesion mode. Microorganism electrolytic device includes 2 carbon fiber board 63, 2 carbon fiber board 63 is the curved surface fiberboard, 2 wire 62 and constant voltage power supply 61, 2 wire are insulating wire, 2 wire 62's one end is connected with constant voltage power supply 61's positive negative pole mutually electricity respectively, carbon fiber board 63 is connected respectively to the other end, two carbon fiber board 63 are fixed on the inner wall of retort 1 with insulating support respectively, mutual noninterference, two carbon fiber board 63 can form negative and positive two-stage under constant voltage power supply 61 effect, the organic matter can take place oxidation reaction on the positive pole surface in the jar, can take place reduction reaction on the negative pole surface, thereby realize the microorganism electrolysis, the conversion of volatile fatty acid in the jar is accelerated. The pretreated kitchen waste enters the reaction tank 1 through the feeding unit, methane is produced on one hand through microbial electrolysis reaction, on the other hand, the produced sludge sinks into the bottom of the reaction tank 1 and is discharged through a sludge discharge pipe 9 communicated with the bottom of the reaction tank 1, and the produced sewage is discharged through a drain pipe 10 communicated with the top of the reaction liquid of the reaction tank 1, so that the kitchen waste is changed into valuable, the sludge sewage is better treated, the environment is protected, and the unification of environmental benefit, social benefit and economic benefit is realized.
The feeding unit comprises a feeding pump 22 and a feeding pipe 2, and the feeding pipe 2 is communicated with the lower part of the reaction tank 1; the feed pump 22 is arranged in the pipeline of the feed pipe 2 and used for feeding kitchen waste, for example, in the specific embodiment, the feed pump 22 is bonded by engineering plastics, the feed pump 22 is bonded into the pipeline, the feed pump 22 adopts a screw pump, so that the kitchen waste can be fed without forming vortex and the feeding is stable.
The kitchen waste treatment device also comprises an internal circulation heating unit for assisting in heating the reaction liquid in the reaction tank 1;
the internal circulation heating unit includes: an inner water inlet pipe 73, a steam-water mixer 74, an inner circulation upper pipe 77 and an inner circulation lower pipe 79; one end of the inner water inlet pipe 73 is communicated with the middle part of the reaction tank 1, and the other end is communicated with the steam-water mixer 74; the steam-water mixer 74 may be stainless steel;
one end of the internal circulation upper pipe 77 is communicated with the steam-water mixer 74, and the other end is communicated with the space inside the reaction tank 1 and above the top of the reaction liquid;
one end of the internal circulation lower pipe 79 is communicated with the steam-water mixer 74, and the other end is communicated with the bottom of the reaction tank 1;
the steam-water mixer 74 is provided with a steam inlet for inputting steam for heating the water inlet of the inner water inlet pipe 73;
the pipeline of the inner water inlet pipe 73 is internally provided with a first valve 71 which controls the water inlet of the pipeline of the inner water inlet pipe 73.
The internal circulation heating unit also comprises at least one circulating water pump 75, the circulating water pump 75 can adopt a screw pump, and the circulating water pump 75 is communicated with a steam-water mixer 74 to ensure that reaction liquid fully mixed with steam smoothly circulates; for example, in the present embodiment, the circulating water pump 75 is a screw pump, and the steam-water mixer 74 is made of stainless steel and is connected to the flange by bonding;
one end of the internal circulation upper pipe 77 is communicated with the circulating water pump 75, and the other end is communicated with the space inside the reaction tank 1 and above the top of the reaction liquid, so that the upper circulation is realized;
one end of the internal circulation lower pipe 79 is communicated with the circulating water pump 75, and the other end is communicated with the bottom of the reaction tank 1, so that the next circulation is realized.
The internal circulation heating unit further comprises a second valve 76, a third valve 78; a second valve 76 is arranged in the pipeline of the internal circulation upper pipe 77 and controls the water outlet of the internal circulation upper pipe 77; the third valve 78 is arranged in the pipeline of the internal circulation lower pipe 79 and controls the water outlet of the internal circulation lower pipe 79;
the end of the internal circulation upper pipe 77 communicated with the space inside the reaction tank 1 and above the top of the reaction liquid is an inclined water outlet, and the water outlet direction and the gravity direction form a certain angle, so that turbulent flow is formed in the reaction tank 1, and the reaction liquid in the reaction tank 1 is uniformly heated;
the end of the internal circulation lower pipe 79 communicated with the bottom of the reaction tank 1 is an inclined water outlet, and the water outlet direction and the gravity direction form a certain angle, so that turbulent flow is formed in the reaction tank 1, and reaction liquid in the reaction tank 1 is uniformly heated.
The internal circulation heating unit may further comprise at least 1 thermometer 3, the thermometer 3 being disposed at a middle portion of the reaction tank, a measurement portion thereof penetrating a wall of the reaction tank and extending into the reaction tank, and a display portion thereof being located outside the reaction tank. The thermometer 3 penetrates through the wall of the reaction tank 1, a temperature sensing bulb (measuring part) of the thermometer 3 is positioned in the reaction liquid of the reaction tank 1, and an indicating gauge (display part) of the thermometer 3 is positioned on the outer wall of the reaction tank 1, so that the temperature in the reaction tank 1 can be monitored and adjusted in time.
In this embodiment, the internal circulation heating unit includes a circulation water pump 75, 2 thermometers 3, and 2 thermometers 3 are respectively provided on the upper and lower walls of the reaction tank 1 to monitor the temperature of the reaction liquid in the reaction tank 1. The thermometer 3 arranged at the upper part of the reaction tank 1 displays that the temperature of the upper part in the reaction tank 1 is lower than the original reaction temperature (35 ℃), the first valve 71, the circulating water pump 75 and the second valve 76 are opened, the reaction liquid at the upper part in the reaction tank 1 enters the steam-water mixer 74 to be mixed and heated with the steam entering from the steam inlet, the mixture enters the internal circulation upper pipe 77 through the circulating water pump 75 and flows back to the reaction tank 1 to realize the upper circulation heating of the reaction tank 1, the internal circulation upper pipe 77 is also provided with a temperature sensor to control the entering amount of the steam, the thermometer 3 at the upper part displays that the reaction liquid in the reaction tank 1 reaches the original reaction temperature (35 ℃), and the first valve 71, the circulating water pump 75 and the second valve 76 are closed;
in a further embodiment, the internal circulation heating unit includes a circulation water pump 75, 2 thermometers 3, and 2 thermometers 3 are respectively provided on the upper and lower tank walls of the reaction tank 1 to monitor the temperature of the reaction liquid in the reaction tank 1. The thermometer 3 arranged at the lower part of the reaction tank 1 displays that the temperature of the lower part in the reaction tank 1 is lower than the temperature (35 ℃) of the original reaction, the first valve 71, the circulating water pump 75 and the third valve 78 are opened, the reaction liquid at the lower part in the reaction tank 1 enters the steam-water mixer 74 to be mixed and heated with the steam entering from the steam inlet, the mixture enters the internal circulation lower pipe 79 through the circulating water pump 75 and flows back to the reaction tank 1 to realize the circulation heating of the next path of the reaction tank 1, the internal circulation lower pipe 79 is also provided with a temperature sensor to control the entering amount of the steam, the thermometer 3 at the lower part displays that the reaction liquid in the reaction tank 1 reaches the original reaction temperature (35 ℃), and the first valve 71, the circulating water pump 75 and the third valve 78 are closed;
in a still further embodiment, the internal circulation heating unit includes a circulation water pump 75, 2 thermometers 3, and 2 thermometers 3 are provided on the upper and lower tank walls of the reaction tank 1, respectively, to monitor the temperature of the reaction liquid in the reaction tank 1. The temperature gauges 3 arranged at the upper part and the lower part of the reaction tank 1 simultaneously display that the temperature in the reaction tank 1 is lower than the temperature (35 ℃) of the preset reaction, the first valve 71, the circulating water pump 75, the second valve 76 and the third valve 78 are opened, the reaction liquid in the reaction tank 1 enters the steam-water mixer 74 to be mixed and heated with the steam entering from the steam inlet, enters an inner circulation upper pipe 77 and an inner circulation lower pipe 79 through a circulating water pump 75, flows back into the reaction tank 1, simultaneously realizes the upper circulation heating and the lower circulation heating of the reaction tank 1, the inner circulation upper pipe 77 and the inner circulation lower pipe 79 are also provided with temperature sensors, thus, the amount of steam introduced was controlled, and the upper thermometer 3 and the lower thermometer 3 showed that the reaction solution in the reaction tank 1 reached the predetermined reaction temperature (35 ℃ C.), and the first valve 71, the circulating water pump 75, the second valve 76, and the third valve 78 were closed.
In this embodiment, after the heating unit is finished, the reaction tank 1 is further insulated by using an insulation material, which is mineral rock wool and is attached to the tank body and the tank top of the reaction tank 1 for insulation.
The kitchen waste treatment device also comprises a stirrer, wherein the stirrer can comprise a stirring shaft 42, a stirring motor 43 and at least 1 stirring blade 41, the stirring blades 41 are arranged on the stirring shaft 42 in a surrounding manner, and are used for stirring the reaction liquid in the reaction tank 1, so that the reaction liquid is mixed more uniformly and reacts stably;
the stirring motor 43 is arranged on the outer wall of the reaction tank 1;
the stirring shaft 42 penetrates through the wall of the reaction tank 1, one end of the stirring shaft is connected with a stirring motor 43, and the other end of the stirring shaft is connected with a stirring blade 41 extending to the position below the liquid level of the reaction tank 1.
In the present embodiment, the stirrer is a stainless vertical stirrer, and is assembled to the reaction tank 1 by welding. The agitator includes (mixing) shaft 42, agitator motor 43 and 6 stirring paddle 41, and stirring paddle 41 encircles and sets up on (mixing) shaft 42, and agitator motor 43 drives the (mixing) shaft 42 that is provided with 6 stirring paddle 41 and stirs the reaction liquid in retort 1, makes the reaction liquid mix more evenly, stable reaction.
The kitchen waste treatment device also comprises a positive and negative pressure protection device 5, wherein the positive and negative pressure protection device 5 is communicated with the space inside the reaction tank 1 and above the top of the reaction liquid; in this embodiment, the positive/negative pressure protection device 5 is used to monitor the pressure in the reaction tank 1 in real time, so as to prevent the potential safety hazard caused by too high methane pressure and too large methane amount, or the negative pressure formed in the reaction tank 1 causes damage to the reaction tank 1.
The kitchen waste treatment device also comprises a methane pretreatment device 8, wherein the methane pretreatment device 8 is communicated with the space inside the reaction tank 1 and above the top of the reaction liquid to pretreat methane generated by reaction in the reaction tank 1; in this embodiment, the biogas generated in the reaction tank 1 enters a biogas pretreatment device 8 for pretreatment. The biogas pretreatment device 8 comprises a gas guide pipe and a biogas water seal tank. The gas guide pipe and the methane water seal tank are both made of stainless steel 304 and are connected in a welding mode.
In the specific embodiment, the regulated power supply 61 is 0.7V, so that the activity of methanogens can be effectively enhanced, and the electrolytic stability of microorganisms in the reaction tank 1 is improved; a sludge discharge valve 91 is arranged in the pipeline of the sludge discharge pipe 9 and is used for periodically controlling and discharging bottom sludge generated in the reaction tank 1; a first electromagnetic flowmeter 21 is arranged in the feeding pipe 2 path, so that the feeding quantity in the feeding pipe 2 can be conveniently monitored, and the frequency of a feeding pump 22 is adjusted, so that the feeding speed of the feeding pipe 2 is adjusted; the second electromagnetic flowmeter 72 is arranged in the inner water inlet pipe 73, so that the circulating amount of the reaction liquid in the inner water inlet pipe 73 can be monitored conveniently, the frequency of the circulating water pump 75 can be adjusted, the water inlet speed in the inner water inlet pipe 73 can be adjusted, and meanwhile, the first electromagnetic flowmeter 21 and the second electromagnetic flowmeter 72 are provided with upper limit and lower limit alarms to prevent overhigh pipeline pressure or dry running of the pump caused by misoperation; in order to reduce potential safety hazards, the anaerobic area of the device is also provided with a biogas alarm device, the biogas alarm device is arranged outside the reaction tank 1 and is not connected with the reaction tank 1, so that the biogas alarm device is not marked in the figure, when the concentration of biogas in the area is close to a set dangerous concentration range, a warning alarm can be sent out, and meanwhile, a corresponding prompt can be made on an industrial personal computer to remind an operator of carrying out appropriate treatment; in order to facilitate the operation, a system for controlling the kitchen waste treatment device is divided into a local control mode and a remote control mode, and a control system adopts a Programmable Logic Controller (PLC) and a touch screen to execute local control. And the control cabinet PLC and the DCS are controlled through hard wiring. The operation state of the equipment can be monitored on the DCS, and the starting and stopping operation and the fault alarm of the kitchen waste treatment device are realized.
According to the specific implementation mode, the kitchen waste treatment device effectively accelerates the conversion of volatile fatty acid and simultaneously effectively strengthens the activity of methanogens in the kitchen waste treatment process, further stabilizes anaerobic digestion reaction, improves the methane yield of the system, and has practicability; while the kitchen waste is treated, the biogas can be continuously generated, and the unification of environmental benefit, social benefit and economic benefit is obtained.
Claims (10)
1. The utility model provides a kitchen garbage processing apparatus which characterized in that:
the kitchen waste treatment device comprises a feeding unit, a reaction tank, a sludge discharge pipe, a drain pipe and a microbial electrolysis device;
the feeding unit is communicated with the lower part of the reaction tank;
the sludge discharge pipe is communicated with the bottom of the reaction tank; the drain pipe is communicated with the top of the reaction liquid of the reaction tank;
the microorganism electrolysis device comprises at least 2 carbon fiber plates, at least 2 leads and a stabilized voltage power supply; the positive electrode and the negative electrode of the voltage-stabilized power supply are respectively electrically connected with the lead wires and correspondingly form a positive lead wire and a negative lead wire; the positive lead and the negative lead are respectively connected with the carbon fiber plate; the stabilized voltage supply is arranged outside the reaction tank, the carbon fiber plates are arranged in the tank body of the reaction tank, and the carbon fiber plates are not interfered with each other; the lead penetrates through the wall of the reaction tank.
2. The kitchen waste treatment device according to claim 1, characterized in that:
the feeding unit comprises a feeding pump and a feeding pipe, and the feeding pipe is communicated with the lower part of the reaction tank; the feeding pump is arranged in the pipeline of the feeding pipe.
3. The kitchen waste treatment device according to claim 2, characterized in that:
the kitchen waste treatment device also comprises an internal circulation heating unit;
the internal circulation heating unit includes: an inner water inlet pipe, a steam-water mixer, an inner circulation upper pipe and an inner circulation lower pipe; one end of the inner water inlet pipe is communicated with the middle part of the reaction tank, and the other end of the inner water inlet pipe is communicated with the steam-water mixer;
one end of the internal circulation upper pipe is communicated with the steam-water mixer, and the other end of the internal circulation upper pipe is communicated with the space inside the reaction tank and above the top of the reaction liquid;
one end of the internal circulation lower pipe is communicated with the steam-water mixer, and the other end of the internal circulation lower pipe is communicated with the bottom of the reaction tank;
the steam-water mixer is provided with a steam inlet;
and a first valve is arranged in the pipeline of the inner water inlet pipe.
4. The kitchen waste treatment device according to claim 3, characterized in that:
the internal circulation heating unit also comprises at least one circulating water pump, and the circulating water pump is communicated with the steam-water mixer;
one end of the internal circulation upper pipe is communicated with the circulating water pump, and the other end of the internal circulation upper pipe is communicated with the space inside the reaction tank and above the top of the reaction liquid;
one end of the internal circulation lower pipe is communicated with the circulating water pump, and the other end of the internal circulation lower pipe is communicated with the bottom of the reaction tank.
5. The kitchen waste treatment apparatus according to claim 4, wherein the internal circulation heating unit further comprises:
a second valve, a third valve; the second valve is arranged in the internal circulation upper pipe pipeline; the third valve is arranged in a pipeline of the internal circulation lower pipe;
at least 1 thermometer for measuring the temperature of the upper and lower parts in the reaction tank; the thermometer is arranged in the middle of the reaction tank, the measuring part of the thermometer penetrates through the wall of the reaction tank and extends into the reaction tank, and the display part of the thermometer is positioned outside the reaction tank.
6. The kitchen waste treatment device according to claim 4, characterized in that:
one end of the internal circulation upper pipe, which is communicated with the space inside the reaction tank and above the top of the reaction liquid, is an inclined water outlet;
and one end of the internal circulation lower pipe communicated with the bottom of the reaction tank is a slope water outlet.
7. The kitchen waste treatment device according to claim 1, characterized in that:
the kitchen waste treatment device also comprises a stirrer, wherein the stirrer comprises a stirring shaft, a stirring motor and at least 1 stirring blade, and the stirring blades are arranged on the stirring shaft in a surrounding manner;
the stirring motor is arranged on the outer wall of the reaction tank;
the stirring shaft penetrates through the tank wall of the reaction tank, one end of the stirring shaft is connected with the stirring motor, and the other end of the stirring shaft extends to a position below the liquid level of the reaction tank.
8. The kitchen waste treatment device according to claim 1, characterized in that:
the kitchen waste treatment device further comprises a positive and negative pressure protection device, wherein the positive and negative pressure protection device is communicated with the space above the top of the reaction liquid inside the reaction tank.
9. The kitchen waste treatment device according to claim 1, characterized in that:
the kitchen waste treatment device further comprises a methane pretreatment device, and the methane pretreatment device is communicated with the space inside the reaction tank and above the top of the reaction liquid.
10. The kitchen waste treatment device according to claim 3, characterized in that:
the voltage-stabilized power supply is 0.7V;
a mud valve is arranged in the pipeline of the mud pipe;
a first electromagnetic flowmeter is arranged in the pipeline of the feeding pipe;
and a second electromagnetic flowmeter is arranged in the inner water inlet pipe.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116984354A (en) * | 2023-08-25 | 2023-11-03 | 嘉兴性天环保科技有限公司 | A positive pressure high temperature perishable garbage treatment reaction tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116984354A (en) * | 2023-08-25 | 2023-11-03 | 嘉兴性天环保科技有限公司 | A positive pressure high temperature perishable garbage treatment reaction tank |
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Inventor after: Zhou Meng Inventor after: Bu Qingguo Inventor after: Zhang Jiangjun Inventor after: Hu Bo Inventor after: Xie Jiarui Inventor before: Zhou Meng Inventor before: Zeng Wuqing Inventor before: Bu Qingguo Inventor before: Zhang Jiangjun Inventor before: Hu Bo Inventor before: Xie Jiarui |