CN214639022U - Anaerobic digestion treatment device for kitchen garbage - Google Patents
Anaerobic digestion treatment device for kitchen garbage Download PDFInfo
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- CN214639022U CN214639022U CN202023083687.XU CN202023083687U CN214639022U CN 214639022 U CN214639022 U CN 214639022U CN 202023083687 U CN202023083687 U CN 202023083687U CN 214639022 U CN214639022 U CN 214639022U
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Abstract
The utility model provides a kitchen garbage anaerobic digestion treatment device, which comprises a crusher; the pulping and dehydrating machine is used for pulping and dehydrating to form slurry and primary solid slag; the first hydrothermal hydrolysis reaction kettle is used for carrying out hydrothermal hydrolysis on the slurry; the three-phase centrifuge is used for carrying out three-phase separation on the slurry so as to separate secondary solid residue, grease and the slurry; the second wet-hot hydrolysis reaction kettle is used for carrying out wet-hot hydrolysis on the primary solid slag and the secondary solid slag; the filter press is used for carrying out filter pressing dehydration on the primary solid slag and the secondary solid slag to form filtrate and waste solid slag; the acidification tank is used for carrying out hydrolytic acidification on the filtrate and the slurry; and an anaerobic tank for anaerobic fermentation of the filtrate and the slurry. The utility model provides a kitchen garbage anaerobic digestion processing apparatus, the wet heat of thick liquids hydrolysises and makes the grease draw out more easily when the three-phase separation, can make the liquefaction of solid phase organic matter moreover, improves the extraction rate of organic matter.
Description
Technical Field
The utility model belongs to the technical field of refuse treatment, more specifically say, relate to a kitchen garbage anaerobic digestion processing apparatus.
Background
The kitchen waste refers to leftovers discarded in daily life of people and leftovers generated in the food processing process, and the like, the components and the properties of the kitchen waste change along with the change of regions, the dietary habits of residents and seasons, but the kitchen waste has the characteristics of high water content, high organic matter content, high oil content, easiness in biochemical degradation and the like. With the improvement of the living standard of residents, the kitchen garbage generation amount is increasing day by day, and taking Shenzhen city as an example, the daily kitchen garbage generation amount is about 2000t and accounts for more than 20% of the total amount of the urban household garbage. At present, the treatment method of kitchen waste mainly comprises incineration, landfill, aerobic composting, anaerobic digestion and the like, wherein the anaerobic digestion method becomes the most widely applied treatment technology at present by virtue of the advantages of high resource recovery rate, low energy consumption, mature process and the like. The common anaerobic digestion process flow is as follows: after the kitchen waste is subjected to impurity sorting, the kitchen waste is made into slurry through a crusher, then three-phase separation is carried out on the materials, the separated grease is recycled, solid residues and a liquid mixture are transferred into an anaerobic fermentation system, methane generated by fermentation is used as clean energy, and after the fermentation residues are dehydrated, sewage and the solid residues are finally treated by a sewage plant and a landfill respectively. In practice, it has been found that there are several problems with this process flow: 1. the kitchen waste contains inorganic components, is wrapped by viscous slurry after being crushed and is difficult to separate by a mechanical centrifugation method, and the inorganic components can be continuously deposited and accumulated in a rear anaerobic fermentation tank to influence the anaerobic fermentation efficiency; 2. the kitchen waste contains a part of solid grease, the properties of the kitchen waste cannot be changed by mechanical crushing, and the kitchen waste is difficult to be extracted by mechanical centrifugation, so that the slurry has high viscosity and high grease content, is easy to acidify, and influences the stable operation of a biological treatment process; 3. after the fermentation residues are dehydrated, the solid matters still contain more organic matters, so that the extraction rate of the organic matters of the whole process is low, and the waste of resources is caused.
Disclosure of Invention
An object of the embodiment of the utility model is to provide a kitchen garbage anaerobic digestion processing apparatus to solve the technical problem that the kitchen garbage that exists is interior more inorganic matter, solid-state grease is difficult to extract, fermentation efficiency is lower, organic matter extraction rate is not high among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme: provides a kitchen garbage anaerobic digestion treatment device, which comprises
The crusher is used for crushing the kitchen garbage;
the pulping and dehydrating machine is used for pulping and dehydrating the kitchen garbage after crushing treatment to form slurry and primary solid slag;
the first hydrothermal hydrolysis reaction kettle is used for carrying out hydrothermal hydrolysis on the formed slurry;
the three-phase centrifuge is used for carrying out three-phase separation on the slurry subjected to the wet-heat hydrolysis so as to separate solid-phase secondary solid residues, oil-phase grease and liquid-phase slurry;
the second wet-hot hydrolysis reaction kettle is used for carrying out wet-hot hydrolysis on the primary solid slag and the secondary solid slag;
the filter press is used for carrying out filter pressing and dehydration on the primary solid slag and the secondary solid slag after the wet-heat hydrolysis so as to form filtrate and waste solid slag;
the acidification tank is used for carrying out hydrolytic acidification on the filtrate and the slurry separated by the three-phase centrifuge; and
the anaerobic tank is used for carrying out anaerobic fermentation on the filtrate and the slurry after hydrolytic acidification;
the discharge gate of breaker with the pan feeding mouth of slurrying hydroextractor is connected, the liquid phase export of slurrying hydroextractor with the pan feeding mouth of first hydrothermal hydrolysis reation kettle connects, the discharge gate of first hydrothermal hydrolysis reation kettle with three phase centrifuge's pan feeding mouth is connected, three phase centrifuge's solid phase export with the solid phase export of slurrying hydroextractor all with the pan feeding mouth of second hydrothermal hydrolysis reation kettle connects, the discharge gate of second hydrothermal hydrolysis reation kettle with the pressure filter is connected, the liquid phase export of pressure filter with three phase centrifuge's liquid phase export all with the pan feeding mouth of acidizing jar is connected, the discharge gate of acidizing jar with the pan feeding mouth of anaerobic jar is connected.
In one embodiment, the kitchen waste anaerobic digestion treatment device further comprises a solid slag bin, wherein a solid phase outlet of the pulping and dewatering machine and a solid phase outlet of the three-phase centrifuge are both connected to a feeding port of the solid slag bin, so that the primary solid slag and the secondary solid slag are both conveyed into the solid slag bin, and a discharging port of the solid slag bin is connected to a feeding port of the second wet-hot water hydrolysis reaction kettle.
In one embodiment, the kitchen garbage anaerobic digestion treatment device further comprises a biogas residue dehydrator, wherein a feeding port of the biogas residue dehydrator is connected to a discharging port of the anaerobic tank, and a solid phase outlet of the biogas residue dehydrator is connected to a feeding port of the solid residue storage bin.
In one embodiment, a liquid phase outlet of the biogas residue dehydrator is connected with a wastewater buffer tank, and an aeration device for pretreating wastewater is arranged at the bottom of the wastewater buffer tank.
In one embodiment, the kitchen waste anaerobic digestion treatment device further comprises a slurry adjusting tank, the liquid phase outlet of the three-phase separator and the liquid phase outlet of the filter press are connected to the feeding port of the slurry adjusting tank, and the discharging port of the slurry adjusting tank is connected to the feeding port of the acidification tank.
In one embodiment, the kitchen waste anaerobic digestion treatment device further comprises a discharge bin for collecting and transporting kitchen waste, a discharge port of the discharge bin is connected with a feed port of the crusher, and a filter mechanism is arranged at the feed port of the discharge bin.
In one embodiment, the acidification tank and the anaerobic tank each have a slurry circulation conduit that prevents encrustation of the top of the slurry.
In one embodiment, the kitchen waste anaerobic digestion treatment device further comprises an acidification material storage tank, wherein a discharge port of the acidification tank is connected to a feed port of the acidification material storage tank, and a discharge port of the acidification material storage tank is connected to a feed port of the anaerobic tank.
In one embodiment, the bottom of the acidizing fluid reservoir is V-shaped.
In one embodiment, a settled sand collecting device is arranged at the bottom of the anaerobic tank.
The utility model provides a kitchen garbage anaerobic digestion processing apparatus's beneficial effect lies in: compared with the prior art, the utility model discloses surplus rubbish anaerobic digestion processing apparatus in kitchen includes the breaker, the slurrying hydroextractor, first damp and hot hydrolysis reaction cauldron, three-phase centrifuge, the damp and hot hydrolysis reaction cauldron of second, the pressure filter, acidizing jar and anaerobic jar, surplus rubbish in kitchen is behind the broken handle of breaker, carry out slurrying dehydration to it through the slurrying hydroextractor, form thick liquids and once solid sediment, first damp and hot hydrolysis reaction cauldron carries out damp and hot hydrolysis to thick liquids, then three-phase centrifuge carries out the three-phase separation to thick liquids after the damp and hot hydrolysis, form the solid sediment of secondary, grease and thick liquids, the damp and hot hydrolysis reaction cauldron of second is used for carrying out damp and hot hydrolysis to the solid sediment of once and the secondary of production, then adopt the pressure filter to dewater the solid sediment after the damp and hot hydrolysis, the thick liquids that the filtrating of formation and three-phase separation produced jointly carry out acidizing and anaerobic fermentation. The slurry separated after pulping and dewatering is subjected to damp-heat hydrolysis, so that grease can be dissolved out, the grease can be extracted more easily during three-phase separation, and part of solid-phase organic matters can be liquefied, so that the extraction rate of the organic matters can be improved; the primary solid slag and the secondary solid slag are simultaneously subjected to damp-heat hydrolysis, so that the extraction rate of organic matters can be further improved, and the inorganic components in the filtrate can be reduced in the step of filter pressing and dehydration, so that the anaerobic fermentation is prevented from being influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a schematic structural view of an anaerobic digestion treatment device for kitchen waste according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a kitchen garbage anaerobic digestion treatment device according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-a discharge bin; 2-a crusher; 3-pulping and dewatering machine; 4-slurry buffer pool; 5-a first wet-hot hydrolysis reaction kettle; 6-three-phase centrifuge; 7-solid slag bin; 8-a second wet-hot hydrolysis reaction kettle; 9-a filter press; 10-a slurry adjusting tank; 11-an acidification tank; 12-an acidified material reservoir; 13-anaerobic jar; 14-a biogas residue dehydrator; 15-waste water buffer pool.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Now, the kitchen garbage anaerobic digestion treatment device provided by the embodiment of the utility model will be explained.
In one embodiment of the present invention, referring to fig. 1 and 2, the anaerobic digestion treatment device for kitchen garbage includes a crusher 2, a pulping dehydrator 3, a first hydrothermal digestion reaction kettle 5, a three-phase centrifuge 6, a second hydrothermal digestion reaction kettle 8, a filter press 9, an acidification tank 11 and an anaerobic tank 13. The crusher 2 is used for crushing kitchen garbage, and the pulping and dewatering machine 3 is used for pulping and dewatering the crushed kitchen garbage to form liquid-phase slurry and solid-phase primary solid slag after pulping and dewatering. The first wet-hot hydrolysis reaction kettle 5 is used for performing wet-hot hydrolysis on slurry formed by pulping and dehydration, steam is used for heating the slurry, so that solid grease is dissolved out in a large amount, and the solid organic matter is partially liquefied during high-temperature cooking, so that the content of the organic matter in the liquid phase is greatly improved. The three-phase centrifuge 6 is used for carrying out three-phase separation on the slurry after the wet-heat hydrolysis to form solid-phase secondary solid residues, oil of an oil phase and liquid-phase slurry. The second wet-hot hydrolysis reaction kettle 8 carries out wet-hot hydrolysis on the primary solid slag and the secondary solid slag, and carries out steam heating again, so that the residual solid-phase organic matters are liquefied under high-temperature cooking, and the content of the organic matters in the liquid phase is increased again. The filter press 9 carries out filter-pressing dehydration on the solid slag after the wet-heat hydrolysis to form liquid-phase filtrate and solid-phase waste solid slag, the filtrate after the filter-pressing dehydration by the filter press 9 and slurry formed by three-phase centrifugation are hydrolyzed and acidified in the acidification tank 11, and then the mixture is fermented in the anaerobic tank 13 to generate methane. The discharge port of the crusher 2 is connected with the feed port of the pulping dehydrator 3, so that the kitchen waste is crushed and then enters the pulping dehydrator 3, the liquid phase outlet of the pulping dehydrator 3 is connected with the feed port of the first hydrothermal hydrolysis reaction kettle 5, so that the pulp dehydrated enters the first hydrothermal hydrolysis reaction kettle 5, the discharge port of the first hydrothermal hydrolysis reaction kettle 5 is connected with the feed port of the three-phase centrifuge 6, so that the pulp hydrolyzed by the hydrothermal hydrolysis enters the three-phase centrifuge 6, the solid phase outlet of the three-phase centrifuge 6 is connected with the feed port of the second hydrothermal hydrolysis reaction kettle 8, so that the secondary solid slag generated by centrifugation and the primary solid slag generated by pulping and dehydration enter the second hydrothermal hydrolysis reaction kettle 8, the discharge port of the second hydrothermal hydrolysis reaction kettle 8 is connected with the filter press 9, so that the solid slag hydrolyzed by the hydrothermal hydrolysis enters the filter press 9, the liquid phase outlet of the filter press 9 is connected with the feed port of the acidification tank 11, filtrate generated after filter pressing and slurry generated by three-phase centrifugation enter an acidification tank 11 for hydrolysis and acidification, and a discharge port of the acidification tank 11 is connected with a feed port of an anaerobic tank 13, so that the slurry is subjected to anaerobic fermentation in the anaerobic tank 13.
The kitchen waste anaerobic digestion treatment device in the embodiment comprises a crusher 2, a pulping dehydrator 3, a first hydrothermal hydrolysis reaction kettle 5, a three-phase centrifuge 6, a second hydrothermal hydrolysis reaction kettle 8, a filter press 9, an acidification tank 11 and an anaerobic tank 13, wherein after the kitchen waste is crushed by the crusher 2, the slurry is pulped and dehydrated by a pulping and dehydrating machine 3 to form slurry and primary solid slag, a first wet-hot hydrolysis reaction kettle 5 carries out wet-hot hydrolysis on the slurry, then a three-phase centrifuge 6 carries out three-phase separation on the slurry after the wet-heat hydrolysis to form secondary solid slag, grease and slurry, a second wet-heat hydrolysis reaction kettle 8 is used for carrying out the wet-heat hydrolysis on the generated primary solid slag and secondary solid slag, and then, dehydrating the solid slag after the wet and hot hydrolysis by using a filter press 9, and carrying out acidification and anaerobic fermentation on the formed filtrate and slurry generated by three-phase separation. The slurry separated after pulping and dewatering is subjected to damp-heat hydrolysis, so that grease can be dissolved out, the grease can be extracted more easily during three-phase separation, and part of solid-phase organic matters can be liquefied, so that the extraction rate of the organic matters can be improved; the primary solid slag and the secondary solid slag are simultaneously subjected to damp-heat hydrolysis, so that the extraction rate of organic matters can be further improved, and the inorganic components in the filtrate can be reduced in the step of filter pressing and dehydration, so that the anaerobic fermentation is prevented from being influenced.
Optionally, referring to fig. 1 and 2, the anaerobic digestion treatment device for kitchen waste further includes a discharging bin 11, a discharging port of the discharging bin 11 is connected to a feeding port of the crusher 2, and the discharging bin 11 is used for receiving the kitchen waste dumped by the kitchen waste collecting and transporting vehicle. The pan feeding mouth of discharging material bin 11 is provided with filtering mechanism, can elect bold impurity. The bottom (discharge port) of the discharging bin 11 is provided with conveying equipment such as a screw conveyor and the like for conveying kitchen garbage to sorting equipment or directly conveying the kitchen garbage to a feeding port of the crusher 2.
Alternatively, the crusher 2 is used for crushing kitchen waste, the crusher 2 is a double-shaft multi-tooth crusher, the rotating direction of a shaft is opposite to the flow direction of the kitchen waste, large organic matters, plastics and the like can be cut, and the kitchen waste can be pushed into the pulping and dewatering machine 3 for pulping.
Optionally, a slurry buffer tank 4 is disposed between the pulping and dehydrating machine 3 and the first hydrothermal hydrolysis reaction kettle 5, and is used for buffering the slurry dehydrated and pulped by the pulping and dehydrating machine 3. Specifically, the pulping and dewatering machine 3 is divided into two stages, objects with the particle size smaller than or equal to 10mm flow into the pulp buffer pool 4, and the objects with the particle size larger than 10mm are transported to the solid slag bin 7 after being extruded and dewatered. After the object with the particle size larger than 10mm is extruded and dehydrated, the object can be conveyed to a garbage compression carriage through a belt conveyor and then transferred to a solid slag bin 7.
In one embodiment of the present application, referring to fig. 1, the anaerobic digestion treatment device for kitchen garbage further includes a solid slag bin 7, and the solid slag bin 7 is used for temporarily storing solid slag. The pulp and water extractor 3 has a solid phase outlet and a liquid phase outlet. The feeding port of the first wet-hot hydrolysis reaction kettle 5 is connected to the liquid phase outlet of the pulping and dewatering machine 3, and the feeding port of the solid slag bin 7 is connected to the solid phase outlet of the pulping and dewatering machine 3.
Optionally, the wet-heat hydrolysis of the slurry is performed in the first wet-heat hydrolysis reaction kettle 5, so that the solid oil is dissolved out, the subsequent three-phase separation is facilitated, the extraction rate of the oil is improved, the viscosity of the slurry is reduced, the stable proceeding of the anaerobic digestion process is ensured, part of solid phase organic matters in the slurry can be liquefied, the hydrolysis of macromolecular organic matters is promoted, and the efficiency of anaerobic fermentation can be improved. The first hydrothermal hydrolysis reaction kettle 5 is connected with the slurry buffer tank 4 through a pump and a pipeline. First hydrothermal hydrolysis reaction cauldron 5 includes the pan feeding mouth, the evacuation pipe, the relief valve, the stirring rake, the level gauge, buncher, the steam pipe etc, stirring rake becomes the asymmetric design of spiral arrangement in the first hydrothermal hydrolysis reaction cauldron 5, the material resistance of reducible first hydrothermal hydrolysis reaction cauldron 5 stirring in-process, the ejection of compact of being convenient for simultaneously, the thick liquids in the first hydrothermal hydrolysis reaction cauldron 5 adopt steam direct heating, can improve the homogeneity of heat conduction efficiency and increase material, the exit linkage of first hydrothermal hydrolysis reaction cauldron 5 is used for three-phase separation's three phase centrifuge 6.
Optionally, the three-phase centrifuge 6 is configured to perform three-phase separation on the slurry after the wet-heat hydrolysis, and separate solid-phase secondary solid residues, oil-phase grease, and liquid-phase slurry. The three-phase centrifuge 6 is provided with a feeding port and three discharge ports, wherein the three discharge ports are respectively a liquid phase outlet, a solid phase outlet and an oil phase outlet. A feed inlet of the three-phase centrifuge 6 is connected with an outlet of the first hydrothermal hydrolysis reaction kettle 5, so that the slurry enters the three-phase centrifuge 6 for separation; a solid phase outlet of the three-phase centrifuge 6 is connected with a solid slag bin 7, so that secondary solid slag enters the solid slag bin 7 to prepare for wet-heat hydrolysis; the oil phase outlet of the three-phase centrifuge 6 is connected to the oil storage tank, so that the oil continuously generated in the centrifugation process can be collected in the oil storage tank and is transported by an oil tank truck at regular intervals, and the oil is sold to qualified enterprises. The grease is separated by the three-phase centrifugal machine 6, so that the viscosity of the slurry can be reduced, and the influence on the efficiency of anaerobic fermentation is avoided.
Optionally, the primary solid slag and the secondary solid slag are subjected to wet-heat hydrolysis in the second hydrothermal hydrolysis reaction kettle 8, the structure of the second hydrothermal hydrolysis reaction kettle 8 may be selected to be the same as that of the first hydrothermal hydrolysis reaction kettle 5, and a feeding port of the second hydrothermal hydrolysis reaction kettle 8 is connected with a discharging port of the solid slag bin 7. And after the solid slag is subjected to damp-heat hydrolysis in the second damp-heat hydrolysis reaction kettle 8, performing filter pressing and dehydration by using a filter press 9, generating filtrate and waste solid slag through filter pressing and dehydration, enabling the filtrate to enter a slurry adjusting tank 10, and transporting and burying the waste solid slag. The filter press 9 is provided with two discharge ports, namely a liquid phase outlet and a solid phase outlet, the waste solid slag flows out from the solid phase outlet of the filter press 9 and is transported away by a transport vehicle for landfill, and the filtrate flows out from the liquid phase outlet.
In one embodiment of the present application, the kitchen waste anaerobic digestion treatment device further comprises a slurry adjusting tank 10, and the liquid phase outlet of the filter press 9 and the liquid phase outlet of the three-phase centrifuge 6 are both connected to the feed inlet of the slurry adjusting tank 10, so that the filtrate generated by filter pressing by the filter press 9 and the slurry separated by the three-phase centrifuge 6 both enter the slurry adjusting tank 10, and the slurry adjusting tank 10 can adjust the temperature of the liquid inside the device. The discharge hole of the slurry adjusting tank 10 is connected with the feeding hole of the acidification tank 11.
Optionally, the acidification tank 11 is used for hydrolysis acidification of the slurry and the filtrate, and the acidification tank 11 is provided with a slurry circulation pipeline, so that the slurry top incrustation phenomenon can be broken through a slurry backflow mode. An acidification material storage tank 12 is arranged between the acidification tank 11 and the anaerobic tank 13, a discharge port of the acidification tank 11 is communicated with a feed port of the acidification material storage tank 12, and a discharge port of the acidification material storage tank 12 is communicated with a feed port of the anaerobic tank 13. The acidified material reservoir 12 is used for temporarily storing acidified slurry. The bottom of the acidification material storage tank 12 is V-shaped, and has the functions of sand removal and slag discharge. A slurry circulating pipeline is also arranged in the anaerobic tank 13, and a settled sand collecting device is arranged at the bottom of the anaerobic tank 13.
In one embodiment of the present application, the apparatus for anaerobic digestion treatment of kitchen waste further comprises a biogas residue dehydrator 14 for dehydrating biogas residues after fermentation is completed to form solid-phase tertiary solid residues and liquid-phase wastewater. After pretreatment, part of the wastewater can be recycled, and part of the wastewater is collected into a sewage treatment plant for treatment. The wastewater can be treated by the wastewater buffer tank 15, specifically, the wastewater after the biogas residue is dehydrated is stored in the wastewater buffer tank 15, and the bottom of the wastewater buffer tank 15 is provided with an aeration device for pretreating the wastewater. The biogas residue dehydrator 14 is provided with a feeding port, a liquid phase outlet and a solid phase outlet, a discharge port of the anaerobic tank 13 is connected with the feeding port of the biogas residue dehydrator 14, so that biogas residues enter the biogas residue dehydrator 14, the liquid phase outlet of the biogas residue dehydrator 14 is connected with the wastewater buffer pool 15, so that wastewater generated by dehydration enters the wastewater buffer pool 15, the solid phase outlet of the biogas residue dehydrator 14 is connected with the solid residue bin 7, so that three solid residues are generated and then transferred to the solid residue bin 7, and the three solid residues, the primary solid residues and the secondary solid residues are subjected to wet-heat hydrolysis in the second wet-heat hydrolysis reaction kettle 8 together, and organic matters in the kitchen waste are fully extracted.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a kitchen garbage anaerobic digestion processing apparatus which characterized in that: comprises that
The crusher is used for crushing the kitchen garbage;
the pulping and dehydrating machine is used for pulping and dehydrating the kitchen garbage after crushing treatment to form slurry and primary solid slag;
the first hydrothermal hydrolysis reaction kettle is used for carrying out hydrothermal hydrolysis on the formed slurry;
the three-phase centrifuge is used for carrying out three-phase separation on the slurry subjected to the wet-heat hydrolysis so as to separate solid-phase secondary solid residues, oil-phase grease and liquid-phase slurry;
the second wet-hot hydrolysis reaction kettle is used for carrying out wet-hot hydrolysis on the primary solid slag and the secondary solid slag;
the filter press is used for carrying out filter pressing and dehydration on the primary solid slag and the secondary solid slag after the wet-heat hydrolysis so as to form filtrate and waste solid slag;
the acidification tank is used for carrying out hydrolytic acidification on the filtrate and the slurry separated by the three-phase centrifuge; and
the anaerobic tank is used for carrying out anaerobic fermentation on the filtrate and the slurry after hydrolytic acidification;
the discharge gate of breaker with the pan feeding mouth of slurrying hydroextractor is connected, the liquid phase export of slurrying hydroextractor with the pan feeding mouth of first hydrothermal hydrolysis reation kettle connects, the discharge gate of first hydrothermal hydrolysis reation kettle with three phase centrifuge's pan feeding mouth is connected, three phase centrifuge's solid phase export with the solid phase export of slurrying hydroextractor all with the pan feeding mouth of second hydrothermal hydrolysis reation kettle connects, the discharge gate of second hydrothermal hydrolysis reation kettle with the pressure filter is connected, the liquid phase export of pressure filter with three phase centrifuge's liquid phase export all with the pan feeding mouth of acidizing jar is connected, the discharge gate of acidizing jar with the pan feeding mouth of anaerobic jar is connected.
2. The anaerobic digestion apparatus for kitchen waste according to claim 1, characterized in that: the kitchen waste anaerobic digestion treatment device further comprises a solid slag bin, wherein a solid phase outlet of the pulping and dewatering machine and a solid phase outlet of the three-phase centrifuge are connected to a feeding port of the solid slag bin, so that the primary solid slag and the secondary solid slag are conveyed to the solid slag bin, and a discharging port of the solid slag bin is connected to a feeding port of the second wet hot water hydrolysis reaction kettle.
3. The anaerobic digestion apparatus for kitchen waste according to claim 2, characterized in that: the kitchen garbage anaerobic digestion treatment device further comprises a biogas residue dehydrator, wherein a feeding port of the biogas residue dehydrator is connected to a discharging port of the anaerobic tank, and a solid phase outlet of the biogas residue dehydrator is connected to a feeding port of the solid residue bin.
4. The anaerobic digestion apparatus for kitchen waste according to claim 3, characterized in that: the liquid phase outlet of the biogas residue dehydrator is connected with a wastewater buffer pool, and the bottom of the wastewater buffer pool is provided with an aeration device for pretreating wastewater.
5. The anaerobic digestion apparatus for kitchen waste according to claim 1, characterized in that: the kitchen waste anaerobic digestion treatment device further comprises a slurry adjusting tank, a liquid phase outlet of the three-phase separator and a liquid phase outlet of the pressure filter are connected to a feeding port of the slurry adjusting tank, and a discharging port of the slurry adjusting tank is connected to a feeding port of the acidification tank.
6. The anaerobic digestion apparatus for kitchen waste according to claim 1, characterized in that: the kitchen waste anaerobic digestion treatment device further comprises a discharge bin for collecting and transporting kitchen waste, a discharge hole of the discharge bin is connected with a feeding hole of the crusher, and a filtering mechanism is arranged at the feeding hole of the discharge bin.
7. The anaerobic digestion apparatus for kitchen waste according to claim 1, characterized in that: and the acidification tank and the anaerobic tank are respectively provided with a slurry circulating pipeline for preventing the top of the slurry from crusting.
8. The anaerobic digestion apparatus for kitchen waste according to claim 1, characterized in that: the kitchen waste anaerobic digestion treatment device further comprises an acidification material storage tank, a discharge hole of the acidification tank is connected to a feeding hole of the acidification material storage tank, and a discharge hole of the acidification material storage tank is connected to a feeding hole of the anaerobic tank.
9. The anaerobic digestion apparatus for kitchen waste according to claim 8, characterized in that: the bottom of the acidizing material storage pool is V-shaped.
10. The anaerobic digestion processing apparatus for kitchen waste according to any of claims 1-9, characterized in that: and a sand setting and collecting device is arranged at the bottom of the anaerobic tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023083687.XU CN214639022U (en) | 2020-12-18 | 2020-12-18 | Anaerobic digestion treatment device for kitchen garbage |
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| CN202023083687.XU CN214639022U (en) | 2020-12-18 | 2020-12-18 | Anaerobic digestion treatment device for kitchen garbage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115213191A (en) * | 2022-05-17 | 2022-10-21 | 深圳市盘龙环境技术有限公司 | Hydrolysis acidification sectional fermentation process technology for resourceful treatment of kitchen garbage |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115213191A (en) * | 2022-05-17 | 2022-10-21 | 深圳市盘龙环境技术有限公司 | Hydrolysis acidification sectional fermentation process technology for resourceful treatment of kitchen garbage |
| CN115213191B (en) * | 2022-05-17 | 2024-04-09 | 深圳市盘龙环境技术有限公司 | Kitchen garbage recycling, hydrolyzing, acidifying and sectional fermentation process treatment technology |
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