CN202754991U - Kitchen waste anaerobic digestion disposal system - Google Patents

Kitchen waste anaerobic digestion disposal system Download PDF

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Publication number
CN202754991U
CN202754991U CN 201220330323 CN201220330323U CN202754991U CN 202754991 U CN202754991 U CN 202754991U CN 201220330323 CN201220330323 CN 201220330323 CN 201220330323 U CN201220330323 U CN 201220330323U CN 202754991 U CN202754991 U CN 202754991U
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reactor
bio
digestion
digestive system
anaerobic digestion
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徐期勇
马泽宇
金潇
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Peking University Shenzhen Graduate School
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    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/36—Means for collection or storage of gas; Gas holders
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    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/58—Reaction vessels connected in series or in parallel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/02—Percolation

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Abstract

The utility model provides a kitchen waste anaerobic digestion disposal system. The system comprises a first bioreactor in a start period, a second bioreactor in an active period, a third bioreactor in a decomposed period, a first digestive juice tank, a second digestive juice tank, a third digestive juice tank, a first pump, a second pimp, and a third pump. A digestive juice outlet of the bottom of the first bioreactor is connected with a digestive juice inlet and outlet of the upper end of the first digestive juice tank. A digestive juice outlet of the bottom of the second bioreactor is connected with a digestive juice inlet and outlet of the upper end of the second digestive juice tank. Digestive juice inside the second digestive juice tank passes the second pump to the second bioreactor. A digestive juice outlet of the bottom of the second bioreactor is connected with a digestive juice inlet and outlet of the upper end of the third digestive juice tank. Digestive juice inside the third digestive juice inside the third digestive juice tank passes the third pump to the first bioreactor. The kitchen waste anaerobic digestion disposal system can resolves the technical problems that the cycle is long, gas production rate is low, salinity is high, volatile fatty acid (VFA) accumulation and ammonia nitrogen accumulation restrain the gas production rate and the like in a normal kitchen waste anaerobic digestion disposal system.

Description

A kind of anaerobic digestion of kitchen wastes treatment system
Technical field
The utility model relates to a kind of environmental technology field and new energy development utilizes the field, relates in particular to a kind of anaerobic digestion of kitchen wastes treatment system.
Background technology
Changing food waste has the characteristics such as moisture, organism, grease and salt content are high, perishable, and nutritive element is abundant, is the chief component composition in China's domestic waste.Statistic data shows, the annual changing food waste in the whole nation was about 9,000 ten thousand tons in 2007, accounted for 31% of China's domestic waste total amount, and the metropolitan changing food waste day output such as Beijing, Shanghai are all above 1000 tons.The plant that the changing food waste major part that produces is peddled outskirts of a town directly raises live pig, and remainder is undertaken take landfill or burning processing as main end by relevant unit, and the changing food waste into resources degree is very low.
The organic matter of high-content is containing a large amount of biomass energies in the changing food waste, improves the study hotspot that its recycling rate becomes solid waste disposal and management domain gradually.Wherein, it is unique that anaerobic digestion techniques is processed the changing food waste advantage, can utilize the high organic loading ability to bear of anaerobion, in decomposing organic waste, produce green energy resource " biogas ", residue also can be made fertilizer after treatment, not only effectively reduce pollution, and can produce renewable energy source, realized to greatest extent the changing food waste resource reutilization.Therefore anaerobic digestion techniques becomes the important development direction that changing food waste is processed gradually.
But some bottleneck problems that anaerobic digestion techniques exists are limiting factors of its Popularization And Development, the intermediate product that for example produces in the garbage degradation process: VFA(volatile fatty acid, voltaile fatty acid) and ammonia nitrogen, easily follow-up methanogen is produced restraining effect.Changing food waste contains a large amount of easily biodegradable organicses, and the generation speed of VFA is very easily fast than the generation speed of methane, thereby causes Digestive system VFA accumulation and pH to reduce, and follow-up product methane process is produced suppress.Contain the nitrogenous substancess such as a large amount of protein in the changing food waste, can make that ammonia nitrogen concentration reaches thousands of even several thousand milligrams every liter in the Digestive system, and numerous risings that studies show that along with ammonia nitrogen concentration, the activity of methanogen can obviously reduce, when ammonia nitrogen concentration surpassed 6000 mg/L, the activity of methanogen will be suppressed fully.In addition, the high salt branch of changing food waste self causes that moisture oozes out in the microbe, so that methanogen activity decreased even death, salt concentration is higher, and toxicity is stronger.There are some researches show methanogen to Na +Very responsive, work as Na +Concentration during greater than 5000 mg/L, final methane conversion is had disadvantageous effect.In addition, because the characteristic of anaerobion flora, so that anaerobic biological reactor is longer start time, even reaches more than half a year, this phenomenon has had a strong impact on the recycling of changing food waste.
Therefore, how developing cover degradation rate changing food waste treatment technology fast, that running cost is low, biogas energy recycles has great significance.
The utility model content
The technical problems such as the digestion period that exists in the anaerobic digestion of kitchen wastes process at present is long, gas production rate is low in order to solve for the utility model, high salinity, VFA accumulation and the caused aerogenesis inhibition of ammonia nitrogen accumulation provide a kind of anaerobic digestion of kitchen wastes treatment system.
A kind of anaerobic digestion of kitchen wastes treatment system that the utility model provides comprises:
Be used for Anaerobic Digestion the first bio-reactor that is in the starting period, be in the active phase the second bio-reactor, be in the 3rd biological reactor of the phase of becoming thoroughly decomposed; The first digestion flow container, the second digestion flow container, the 3rd digestion flow container; The first pump, the second pump, the 3rd pump; A plurality of liquid connecting tubes connect each bio-reactor and digestion flow container, and described anaerobic digestion of kitchen wastes treatment system also comprises for the gas collector of collecting gas;
Each described bio-reactor upper end is provided for the second import and export that first of Digestive system backflow is imported and exported and is connected with described gas collector; Each described bio-reactor bottom arranges a Digestive system outlet;
Each described digestion flow container top and bottom is respectively arranged with Digestive system and imports and exports, and the liquid inlet that is used for adding the water quality regulation material;
The described Digestive system outlet that is in the first bio-reactor bottom of starting period is imported and exported with described the first digestion flow container upper end Digestive system and is connected, and is used for collecting storage starting period Digestive system;
The described Digestive system outlet that is in the second bio-reactor bottom of active phase is imported and exported with described the second digestion flow container upper end Digestive system and is connected, Digestive system in described the second digestion flow container is realized self refluxing of active phase Digestive system by the second pump delivery to the second bio-reactor; Described the 3rd biological reactor bottom Digestive system outlet that is in the phase of becoming thoroughly decomposed is filled with upper end Digestive system import and export with the 3rd Digestive system and is linked to each other, be used for collecting the starting period Digestive system that stores through the phase waste layer adjusting of becoming thoroughly decomposed, Digestive system in described the 3rd digestion flow container to described the first bio-reactor that is in the starting period, is realized the liquor recycling cross flow by the 3rd pump reflux.
Wherein, described anaerobic digestion of kitchen wastes treatment system also comprises: the 4th bio-reactor that is in pre-treatment period;
Described the 4th bio-reactor that is in pre-treatment period is used for filling enters the digestion process stage through pre-treatment, preparation new refuse.
Wherein, described anaerobic digestion of kitchen wastes treatment system also comprises: the 5th bio-reactor that is in the aerobic phase.
Wherein, the bottom of described the first bio-reactor, the second bio-reactor, the 3rd biological reactor, the 4th bio-reactor, the 5th bio-reactor is provided with aeration opening, this aeration opening links to each other with blast apparatus, is used for ventilating to the waste layer oxygen supply of bio-reactor.
Changing food waste organism anaerobic digestion process is divided into product acid and produces two stages of methane.Producing acid phase, the hydrolysed ferment bacterium is hydrolyzed complicated organism and ferments, and produces a large amount of lipid acid; Produce methane phase and then be converted into CH by some tunnings that methane-producing bacteria will produce acid phase 4And CO 2The utility model adopts the mode of multi-stage, efficient bio-reactor coupling, to produce acid and produce two stages separations of methane and in two independent reactors, carry out, for acid-producing bacteria and methanogen provide living environment separately, to bring into play maximum separately activity, and the mode by pre-treatment and cross backflow before the Digestive system backflow, reduce salinity, ammonia nitrogen, the VFA isoconcentration, effectively hydrolysis rate is slow in the alleviation digestive process, the acid of producing in the methane process suppresses, the problems such as ammonia inhibition and high salinity inhibition, accelerate garbage degradation speed, shorten the anaerobic digestion cycle, improve the output of methane as clean energy source, stability and the digestive efficiency of whole system have been improved, realize the effective, harmless of changing food waste, recycling treatment has huge social benefit, environmental benefit and economic benefit.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of anaerobic digestion of kitchen wastes treatment system embodiment one that Fig. 1 provides for the utility model.
The structural representation of a kind of anaerobic digestion of kitchen wastes treatment system embodiment two that Fig. 2 provides for the utility model.
A kind of anaerobic digestion of kitchen wastes treatment system that Fig. 3 provides for the utility model is carried out the schematic flow sheet of the embodiment of the method one of anaerobic digestion of kitchen wastes processing.
A kind of anaerobic digestion of kitchen wastes that Fig. 4 provides for the utility model is processed the schematic flow sheet of the embodiment of the method two of carrying out the anaerobic digestion of kitchen wastes processing.
The application schematic diagram of a kind of anaerobic digestion of kitchen wastes treatment system that Fig. 5 provides for the utility model.
Embodiment
The utility model provides a kind of anaerobic digestion of kitchen wastes treatment system for solving that the digestion period that exists at present is long, gas production rate is low and the technical problem such as the caused aerogenesis inhibition of high salinity, VFA and ammonia nitrogen accumulation in the anaerobic digestion of kitchen wastes process.
Referring to Fig. 1, the structural representation of a kind of anaerobic digestion of kitchen wastes treatment system embodiment one that provides for the utility model.
The system that the present embodiment one provides comprises:
Be used for Anaerobic Digestion the first bio-reactor 11 that is in the starting period, be in the active phase the second bio-reactor 12, be in the 3rd biological reactor 13 of the phase of becoming thoroughly decomposed; The first digestion flow container 21, the second digestion flow container 22, the 3rd digestion flow container 23; The first pump 31, the second pump 32, the 3rd pump 33; A plurality of liquid connecting tubes connect each bio-reactor and digestion flow container, and described anaerobic digestion of kitchen wastes treatment system also comprises for the gas collector 4 of collecting gas;
Each described bio-reactor upper end is provided for the second import and export that first of Digestive system backflow is imported and exported and is connected with described gas collector; Each described bio-reactor bottom arranges a Digestive system outlet;
Each described digestion flow container top and bottom is respectively arranged with Digestive system and imports and exports, and the liquid inlet that is used for adding the water quality regulation material;
The described Digestive system outlet that is in the first bio-reactor 11 bottoms of starting period is imported and exported with described the first digestion flow container 21 upper end Digestive systems and is connected, and is used for collecting storage starting period Digestive system;
The described Digestive system outlet that is in the second bio-reactor 12 bottoms of active phase is imported and exported with described the second digestion flow container 22 upper end Digestive systems and is connected, Digestive system in described the second digestion flow container 22 is delivered to the second bio-reactor 12 by the second pump 32, realizes self refluxing of active phase Digestive system; Described the 3rd biological reactor 13 bottom Digestive system outlets that are in the phase of becoming thoroughly decomposed are filled with 23 upper end Digestive systems import and export with the 3rd Digestive system and are linked to each other, be used for collecting the starting period Digestive system that stores through the phase waste layer adjusting of becoming thoroughly decomposed, Digestive system in described the 3rd digestion flow container 23 is back to described the first bio-reactor 11 that is in the starting period by the 3rd pump 33, realizes the liquor recycling cross flow.
Referring to Fig. 2, the structural representation of a kind of anaerobic digestion of kitchen wastes treatment system embodiment two that provides for the utility model.
The parts such as the system that the present embodiment two provides each bio-reactor in comprising embodiment one and digestion flow container and pump, also comprise:
Be in the 4th bio-reactor 14 of pre-treatment period;
Described the 4th bio-reactor 14 that is in pre-treatment period is used for filling enters the digestion process stage through pre-treatment, preparation new refuse.
Wherein, described anaerobic digestion of kitchen wastes treatment system also comprises: the 5th bio-reactor 15 that is in the aerobic phase.
Wherein, the bottom of described the first bio-reactor 11, the second bio-reactor 12, the 3rd biological reactor 13, the 4th bio-reactor 14, the 5th bio-reactor 15 is provided with aeration opening, this aeration opening links to each other with blast apparatus, is used for ventilating to the waste layer oxygen supply of bio-reactor.
Need to prove, each bio-reactor in above-mentioned the first bio-reactor 11, the second bio-reactor 12, the 3rd biological reactor 13, the 4th bio-reactor 14, the 5th bio-reactor 15, all may be in the different steps of Anaerobic Digestion, pretreatment stage for example, the starting period of Anaerobic Digestion, active phase, the phase of becoming thoroughly decomposed and aerobic aftertreatment phase.This system comprises that at least three bio-reactors can realize that anaerobic digestion of kitchen wastes of the present utility model processes.
A kind of anaerobic digestion of kitchen wastes treatment system that the utility model provides, adopt the mode of multi-stage, efficient bio-reactor coupling, to produce acid and produce two stages separations of methane and in two independent reactors, carry out, for acid-producing bacteria and methanogen provide living environment separately, to bring into play maximum separately activity, and the mode by pre-treatment and cross backflow before the Digestive system backflow, reduce salinity, ammonia nitrogen, the VFA isoconcentration, effectively hydrolysis rate is slow in the alleviation digestive process, the acid of producing in the methane process suppresses, the problems such as ammonia inhibition and high salinity inhibition, accelerate garbage degradation speed, shorten the anaerobic digestion cycle, improve the output of methane as clean energy source, stability and the digestive efficiency of whole system have been improved, realize the effective, harmless of changing food waste, recycling treatment has huge social benefit, environmental benefit and economic benefit.
Referring to Fig. 3, a kind of anaerobic digestion of kitchen wastes treatment system that provides for the utility model is carried out the schematic flow sheet of the embodiment of the method one that anaerobic digestion of kitchen wastes processes.
The method flow that the present embodiment one provides comprises:
Step 100 is filled to the first bio-reactor with changing food waste through after the pre-treatment, makes this first bio-reactor enter the starting period of Anaerobic Digestion;
Step 101 through after the scheduled time, is filled to the second bio-reactor with new changing food waste through after the pre-treatment, makes this second bio-reactor enter the starting period of Anaerobic Digestion;
Step 102, pass through the scheduled time again after, through being filled to the 3rd biological reactor after the pre-treatment, make the 3rd biological reactor enter the starting period of Anaerobic Digestion changing food waste;
The above-mentioned scheduled time can arrange as requested.
Wherein, changing food waste is carried out pre-treatment, comprising:
Reject the throwaway chopsticks in the changing food waste of getting, plastics composition, and changing food waste is carried out broken mixing operation.
Step 103, when the first bio-reactor or the second bio-reactor or the 3rd biological reactor enter the active phase of Anaerobic Digestion, the Digestive system outlet of Digestive system through its bottom that this bio-reactor that enters the active phase is produced is collected into the digestion flow container that is attached thereto, and then imports and exports through pump reflux to this bio-reactor top Digestive system after treatment;
Step 104, when the first bio-reactor or the second bio-reactor or the 3rd biological reactor enter the phase of becoming thoroughly decomposed of Anaerobic Digestion, the acid digestion liquid that this bio-reactor that enters the phase of becoming thoroughly decomposed is produced is collected into the digestion flow container that is attached thereto through its bottom Digestive system outlet, carry out microbionation by pump reflux to corresponding bio-reactor top Digestive system after treatment, be back to the described bio-reactor that enters this phase of becoming thoroughly decomposed after being regulated through the digestion flow container that is attached thereto by the bottom Digestive system outlet of the bio-reactor that is in the starting period again.
Wherein, the Digestive system that described each bio-reactor produces is collected into the digestion flow container that is attached thereto through the Digestive system outlet of its bottom, undertaken in the step of microbionation by pump reflux to corresponding bio-reactor top Digestive system after treatment, this processing comprises:
Adding buffered soln regulates pH value, ion-exchange desalting treatment, reduces ammonia nitrogen concentration.
Referring to Fig. 4, a kind of anaerobic digestion of kitchen wastes treatment system that provides for the utility model is carried out the schematic flow sheet of the embodiment of the method two that anaerobic digestion of kitchen wastes processes.
The method flow that the present embodiment two provides except each step that comprises embodiment one, also comprises:
Step 105 to carrying out the aerobic aeration aftertreatment through become thoroughly decomposed the first bio-reactor of phase or the second bio-reactor or the 3rd biological reactor, is removed pathogenic agent and reductibility foul smell in the residue.
The below specifies the concrete application process of a kind of anaerobic digestion of kitchen wastes treatment system that the utility model provides again in conjunction with Fig. 5.
Whole anaerobic digestion process of the present utility model is divided into pre-treatment, bio-reactor digestion and aerobic aftertreatment three phases.In the bio-reactor digestion phase, each bio-reactor will experience " starting period-activity phase-become thoroughly decomposed the phase " three phases, and each stage all monitors Digestive system and gaseous fraction that bio-reactor produces.
Step 1 at 1-5 days, is carried out being filled to after the pre-treatment 1# bio-reactor with changing food waste and is entered the digestion starting period.It is to reject the composition such as throwaway chopsticks, plastics in the changing food waste of getting that pretreatment stage mainly operates, and rubbish is carried out the operation such as broken mixing.
Step 2, at 6-10 days, the 2# bio-reactor new a collection of pretreated changing food waste of packing into entered the starting period; The 1# bio-reactor enters the active phase of digestion.The Digestive system that the 1# bio-reactor produces is collected into the digestion flow container through outlet at bottom, and pre-treatment to the import of reactor head Digestive system, realizes that self refluxes by pump reflux.Pre-treatment comprises that adding buffered soln regulates pH, ion-exchange desalting treatment, reduces ammonia nitrogen concentration etc. before refluxing.
Step 3, at 11-15 days, the 3# bio-reactor new a collection of pretreated changing food waste of packing into entered the starting period; The 2# bio-reactor enters the active phase; The 1# bio-reactor enters the phase of becoming thoroughly decomposed.The acid digestion liquid that the 3# bio-reactor produces is collected into the digestion flow container through outlet at bottom, pre-treatment is filled with to the Digestive system import of 1# bio-reactor top by blowback, be back to the 3# bio-reactor by the outlet of 1# bio-reactor bottom Digestive system after the digestion flow container is regulated again, the mode of recharging of intersecting realizes pH regulator, reduce the purpose of fatty acid concentration and inoculation methanogen in the Digestive system.The Digestive system that the 2# bio-reactor produces is undertaken self recharging by pump after digester stores, processes.
Step 4, at 16-20 days, the 4# bio-reactor new a collection of pretreated changing food waste of packing into entered the starting period; The 3# bio-reactor enters the active phase; The 2# bio-reactor enters the phase of becoming thoroughly decomposed.The acid digestion liquid that the 4# bio-reactor produces is collected into the digestion flow container through outlet at bottom, pre-treatment is filled with to 2# bio-reactor top Digestive system by blowback and is imported and exported, and the Digestive system outlet by 2# bio-reactor bottom is back to the 4# bio-reactor after the digestion flow container is regulated again.The Digestive system that the 3# bio-reactor produces is undertaken self recharging by pump after digester stores, processes.The 1# bio-reactor enters the post-processed stage by the mode of aerobic aeration, removes pathogenic agent and reductibility foul smell in the residue.
Changing food waste organism anaerobic digestion process is divided into product acid and produces two stages of methane.Producing acid phase, the hydrolysed ferment bacterium is hydrolyzed complicated organism and ferments, and produces a large amount of lipid acid; Produce methane phase and then be converted into CH by some tunnings that methane-producing bacteria will produce acid phase 4And CO 2The utility model adopts the mode of multi-stage, efficient bio-reactor coupling, to produce acid and produce two stages separations of methane and in two independent reactors, carry out, for acid-producing bacteria and methanogen provide living environment separately, to bring into play maximum separately activity, and the mode by pre-treatment and cross backflow before the Digestive system backflow, reduce salinity, ammonia nitrogen, the VFA isoconcentration, effectively hydrolysis rate is slow in the alleviation digestive process, the acid of producing in the methane process suppresses, the problems such as ammonia inhibition and high salinity inhibition, accelerate garbage degradation speed, shorten the anaerobic digestion cycle, improve the output of methane as clean energy source, stability and the digestive efficiency of whole system have been improved, realize the effective, harmless of changing food waste, recycling treatment has huge social benefit, environmental benefit and economic benefit.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (4)

1. an anaerobic digestion of kitchen wastes treatment system is characterized in that, comprising:
Be used for Anaerobic Digestion the first bio-reactor that is in the starting period, be in the active phase the second bio-reactor, be in the 3rd biological reactor of the phase of becoming thoroughly decomposed; The first digestion flow container, the second digestion flow container, the 3rd digestion flow container; The first pump, the second pump, the 3rd pump; A plurality of liquid connecting tubes connect each bio-reactor and digestion flow container, and described anaerobic digestion of kitchen wastes treatment system also comprises for the gas collector of collecting gas;
Each described bio-reactor upper end is provided for the second import and export that first of Digestive system backflow is imported and exported and is connected with described gas collector; Each described bio-reactor bottom arranges a Digestive system outlet;
Each described digestion flow container top and bottom is respectively arranged with Digestive system and imports and exports, and the liquid inlet that is used for adding the water quality regulation material;
The described Digestive system outlet that is in the first bio-reactor bottom of starting period is imported and exported with described the first digestion flow container upper end Digestive system and is connected, and is used for collecting storage starting period Digestive system;
The described Digestive system outlet that is in the second bio-reactor bottom of active phase is imported and exported with described the second digestion flow container upper end Digestive system and is connected, Digestive system in described the second digestion flow container to the second bio-reactor that is in the active phase, is realized self refluxing of active phase Digestive system by the second pump delivery; Described the 3rd biological reactor bottom Digestive system outlet that is in the phase of becoming thoroughly decomposed is filled with upper end Digestive system import and export with the 3rd Digestive system and is linked to each other, be used for collecting the starting period Digestive system that stores through the phase waste layer adjusting of becoming thoroughly decomposed, Digestive system in described the 3rd digestion flow container to described the first bio-reactor that is in the starting period, is realized the liquor recycling cross flow by the 3rd pump reflux.
2. anaerobic digestion of kitchen wastes treatment system as claimed in claim 1 is characterized in that, described anaerobic digestion of kitchen wastes treatment system also comprises: the 4th bio-reactor that is in pre-treatment period;
Described the 4th bio-reactor that is in pre-treatment period is used for filling enters the digestion process stage through pre-treatment, preparation new refuse.
3. anaerobic digestion of kitchen wastes treatment system as claimed in claim 2 is characterized in that, described anaerobic digestion of kitchen wastes treatment system also comprises: the 5th bio-reactor that is in the aerobic phase.
4. such as each described anaerobic digestion of kitchen wastes treatment system in the claims 1 to 3, it is characterized in that, the bottom of described the first bio-reactor, the second bio-reactor, the 3rd biological reactor, the 4th bio-reactor, the 5th bio-reactor is provided with aeration opening, this aeration opening links to each other with blast apparatus, is used for ventilating to the waste layer oxygen supply of bio-reactor.
CN 201220330323 2012-07-10 2012-07-10 Kitchen waste anaerobic digestion disposal system Expired - Fee Related CN202754991U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757890A (en) * 2012-07-10 2012-10-31 北京大学深圳研究生院 Anaerobic digestion treatment method and system of kitchen waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757890A (en) * 2012-07-10 2012-10-31 北京大学深圳研究生院 Anaerobic digestion treatment method and system of kitchen waste
CN102757890B (en) * 2012-07-10 2015-04-22 北京大学深圳研究生院 Anaerobic digestion treatment method and system of kitchen waste

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