CN105602844B - Kitchen castoff high temperature combined anaerobic digestion equipment and anaerobic digestion process - Google Patents
Kitchen castoff high temperature combined anaerobic digestion equipment and anaerobic digestion process Download PDFInfo
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/20—Heat exchange systems, e.g. heat jackets or outer envelopes the heat transfer medium being a gas
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
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- C12M43/00—Combinations of bioreactors or fermenters with other apparatus
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- C12M45/00—Means for pre-treatment of biological substances
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- C12M45/00—Means for pre-treatment of biological substances
- C12M45/20—Heating; Cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
Present invention is disclosed a kind of kitchen castoff high temperature combined anaerobic digestion equipment and anaerobic digestion process, the equipment includes charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system, vacuum drier, methane boiler.Charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank connect methane boiler respectively, centrifugal dehydrator connects vacuum drier, vacuum drier connection methane boiler；Sewage purification system connection splicing pond.Kitchen castoff high temperature combined anaerobic digestion equipment and anaerobic digestion process proposed by the present invention, can improve biogas yield, improve the stability of system operation, be easy to recycling.
Description
Technical field
The invention belongs to kitchen castoff processing technology field, is related to a kind of kitchen castoff processing equipment, more particularly to
A kind of kitchen castoff high temperature combined anaerobic digestion equipment；Meanwhile the invention further relates to a kind of above-mentioned anaerobic digestion facility
Anaerobic digestion process.
Background technology
Kitchen castoff is the main source of organic phase in domestic waste, typically result from enterprises and institutions, school,
The market of farm produce, supermarket, and food service industry.By taking the big cities such as Beijing, Shanghai, Guangzhou as an example, the daily output of its kitchen castoff
Amount has exceeded 1000 tons.Kitchen castoff using the organic substances such as starch, food fiber class, animal tallow class as mainly into
Point, there is high-moisture, high grease, high salinity and perishable smelly, easily biological-degradable.The kitchen castoff in China except
Outside as raising live pig, the overwhelming majority is all the formal layout with landfill, not only occupies the land resource of a large amount of preciousnesses, and
Pollute surrounding enviroment.
The anaerobic ferment process of kitchen castoff comes from the Anaerobic Methods in Treating of trade effluent, sludge, is a kind of more ripe
Application technology.The advantages of kitchen castoff anaerobic bio-treated, is the high organic loading ability to bear of anaerobe, entirely
The bioreactor of closing reduces secondary pollution of the processing procedure to environment, and what is more important is while discarded object is handled
Biomass energy (hydrogen, methane) is reclaimed, this has even more important realistic meaning for the society now of energy growing tension.
Application No. CN201410787679.3, it is entitled《Rubbish from cooking and dirt based on high temperature combined anaerobic digestion
Mud is jointly processed by method》Patent application, its method are using mesophilic anaerobic digestion, ozone oxidation and thermophilic digestion combination skill
Art is handled the mixture of rubbish from cooking and sludge, including rubbish from cooking is subjected to break process, mixed with dewatered sludge,
Hydrolysis acidification processing, mesophilic anaerobic digestion, ozone Oxidation Treatment, thermophilic digestion, dewater treatment, dehydration liquid and dehydration is made
Mud cake, dehydration liquid are transported to liquid storage tank, and dehydrated sludge cake is used as organic fertilizer.
Application No. CN200710029440.X, it is entitled《A kind of kitchen garbage diphasic anaerobic fermentation producing hydrogen and methane
Method》Patent, its method are to be thoroughly mixed formula cylindrical reactor (CSTR) using 2 medium temperatures to realize production hydrogen and methane phase,
Biogas residue is used to make fertilizer.
Existing kitchen castoff anaerobic digestion process and equipment, usually using single-phase or two-phase equality of temperature, that is, in being
Warm anaerobic digestion (30-40 DEG C) is thermophilic digestion (50-60 DEG C), or needs common point after being mixed with sludge
Reason, causes that kitchen castoff treating capacity is small, the stability of a system is poor, the problems such as biogas conversion ratio is low, and the biogas residue after fermenting is biochemical
Property it is poor, make fertilizer and be but restricted because easily containing reason, the market such as heavy metal.Therefore, these factors all constrain kitchen and given up
The recycling and zero discharge treatment of gurry.
The content of the invention
The technical problems to be solved by the invention are：A kind of kitchen castoff high temperature combined anaerobic digestion equipment is provided,
Biogas yield can be improved, while improves the stability of system operation, is easy to recycling, zero release of pollutant.
In addition, the present invention also provides a kind of anaerobic digestion process of kitchen castoff high temperature combined anaerobic digestion equipment,
Biogas yield can be improved, while improves the stability of system operation, is easy to recycling, zero release of pollutant.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of kitchen castoff high temperature combined anaerobic digestion equipment, the equipment include：Charger, rotary drum coarse rack,
Disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugation
Dewaterer, sewage purification system, vacuum drier, methane boiler；
The charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, medium temperature
Anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high temperature
Anaerobic fermentation tank connects methane boiler, centrifugal dehydrator connection vacuum drier, vacuum drier connection methane boiler respectively；It is dirty
Water purification system connection splicing pond, sewage are used as recycle-water after sewage purification system, and splicing pond is connected by reuse water pipe,
Charge dilution for kitchen castoff；
The charger is used to receive kitchen garbage；Delivery pump and rotary drum coarse rack, rotary drum thick lattice are installed at charger
The grizzly bar spacing of grid is 60mm；The component that size is more than grizzly bar spacing is separated, and this part large particulate matter will be by centralized collection
After being discharged afterwards by Residue extraction pipeline, it is sent into landfill yard and carries out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing passes through
Coarse rack enters disintegrating machine；
Pulp after kitchen waste crusher in crushing and extruder extruding, splicing pond and recycle-water are sent into by conveyance conduit
Dilution, splicing are provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage stirs in splicing pond
After mixing, discharged in pulpous state from splicing bottom of pond portion；Kitchen castoff and recycle-water dilution ratio, it is 1 by weight:8~1:
10；
The pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, hydraulic detention time 50s；The heavy substance isolated
Be sent into landfill yard landfill after being discharged by sediment outflow pipeline, after centralized collection, remainder be transported to feed surge pond heat it is pre-
Processing；
Mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；Medium temperature
Anaerobic reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, and feeds TS (total solids
Content) for concentration 10%, reactor hydraulic detention time is 21 days, control fermentation pH value as 7.5~8.5；To compensate heat loss
With the heating of feed liquid in reactor, internal thermocirculator is installed in reactor on two-way airflow pipe, to keep handling
Temperature is at 36 DEG C；
Residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；High temperature is detested
Oxygen reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~55 DEG C, and charging TS concentration is entered 8%
Expect organic loading：4~5kg VS/m3D, it is 6.5~7.5 to control fermentation pH value；Wherein upflow velocity is controlled in 0.5m/h, is
Ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is filled with reactor bottom by compressor；
Will caused biogas is after simple purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as biogas
The fuel of boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is net by sewage
Recycle-water is used as after change system, splicing pond is connected to by reuse water pipe, the charge dilution for kitchen castoff；Sewage purification
System uses membrane bioreactor MBR, and membrane flux is controlled at 18L/ (m2h)；
It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam by biogas pot
Stove provides, and puts into methane boiler and burn as supplement fuel by dried over dry mud；Steamed needed for vacuum drier
Steam pressure is 0.2MPa, material water ratio≤10% after drying.
A kind of kitchen castoff high temperature combined anaerobic digestion equipment, the equipment include：Charger, rotary drum coarse rack,
Disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugation
Dewaterer, sewage purification system, vacuum drier, methane boiler；
The charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, medium temperature
Anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high temperature
Anaerobic fermentation tank connects methane boiler, centrifugal dehydrator connection vacuum drier, vacuum drier connection methane boiler respectively；It is dirty
Water purification system connection splicing pond, sewage are used as recycle-water after sewage purification system, and splicing pond is connected by reuse water pipe,
Charge dilution for kitchen castoff.
As a preferred embodiment of the present invention, the charger is used to receive kitchen garbage；It is provided with charger defeated
Pump and rotary drum coarse rack are sent, the component that size is more than grizzly bar spacing is separated, and this part large particulate matter will be by after centralized collection
After being discharged by Residue extraction pipeline, it is sent into landfill yard and carries out landfill stabilization；And size is less than the kitchen garbage of grizzly bar spacing through slightly
Grid enters disintegrating machine.
As a preferred embodiment of the present invention, pulp after kitchen waste crusher in crushing and extruder extruding, by
Conveyance conduit is sent into splicing pond and recycle-water dilution, and splicing is provided with agitator in pond, to ensure that the rubbish in splicing pond mixes
Uniformly, after kitchen garbage is stirred in splicing pond, discharged in pulpous state from splicing bottom of pond portion.
As a preferred embodiment of the present invention, separated from the pulpous state rubbish of splicing bottom of pond portion discharge into hydrocyclone
Heavy substance, is sent into landfill yard landfill after the heavy substance isolated is discharged by sediment outflow pipeline, after centralized collection, remainder is transported to
Feed surge pond carries out heat pre-treatment.
As a preferred embodiment of the present invention, the mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor
Middle carry out producing methane through anaerobic fermentation；Residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation life
Produce biogas；
Will caused biogas is after simple purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as biogas
The fuel of boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is net by sewage
Recycle-water is used as after change system, splicing pond is connected to by reuse water pipe, the charge dilution for kitchen castoff；
It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam by biogas pot
Stove provides, and puts into methane boiler and burn as supplement fuel by dried over dry mud.
A kind of anaerobic digestion process using above-mentioned kitchen castoff high temperature combined anaerobic digestion equipment, methods described
Specifically comprise the following steps：
Step S1, kitchen garbage is poured into charger；Delivery pump and rotary drum coarse rack are installed, size is big at charger
It is separated in the component of grizzly bar spacing, after this part large particulate matter will be discharged after centralized collection by Residue extraction pipeline, is sent into
Landfill yard carries out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing enters disintegrating machine through coarse rack；The thick lattice of rotary drum
The grizzly bar spacing of grid is 60mm；
Step S2, pulp after kitchen waste crusher in crushing and extruder extrude, then splicing is sent into by conveyance conduit
Pond and recycle-water dilution, splicing are provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage is connecing
After being stirred in material pond, discharged in pulpous state from splicing bottom of pond portion；Kitchen castoff and recycle-water dilution ratio, by weight,
For 1:8~1:10；
Step S3, the pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, hydraulic detention time 50s；Isolate
Heavy substance discharged by sediment outflow pipeline after, landfill yard landfill is sent into after centralized collection, remainder is transported to feed surge pond and enters
Row heat pre-treatment；
Step S4, the mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out anaerobic fermentation production natural pond
Gas；Anaeration in normal temperature reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, and feeds TS
For concentration 10%, reactor hydraulic detention time is 21 days, control fermentation pH value as 7.5~8.5；For compensation heat loss and reaction
The heating of feed liquid in device, is provided with internal thermocirculator in reactor on two-way airflow pipe, to keep treatment temperature to exist
36℃；
Step S5, the residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；
High temperature anaerobic reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~55 DEG C, and charging TS concentration exists
8%, feed organic loading：4~5kg VS/m3D, it is 6.5~7.5 to control fermentation pH value；Wherein upflow velocity control exists
0.5m/h, to ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is filled with reactor bottom by compressor；
Step S6, will in anaeration in normal temperature reactor and high temperature anaerobic reactor caused biogas after purification, as
The fuel of methane boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is by dirty
Recycle-water is used as after water purification system, the charge dilution of kitchen castoff is used for by recycle-water pipe；Sewage purification system uses
Membrane bioreactor MBR, membrane flux are controlled at 18L/ (m2h)；
Step S7, it is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam
There is provided by methane boiler, and put into methane boiler and burn as supplement fuel by dried over dry mud；Vacuum drying
Steam pressure needed for machine is 0.2MPa, material water ratio≤10% after drying.
A kind of anaerobic digestion process using above-mentioned kitchen castoff high temperature combined anaerobic digestion equipment, methods described tool
Body comprises the following steps：
Step S1, kitchen garbage is poured into charger；Delivery pump and rotary drum coarse rack are installed, size is big at charger
It is separated in the component of grizzly bar spacing, this part large particulate matter will carry out landfill stabilization by landfill yard is sent into after centralized collection；
And the kitchen garbage that size is less than grizzly bar spacing enters disintegrating machine through coarse rack；
Step S2, pulp after kitchen waste crusher in crushing and extruder extrude, is re-fed into splicing pond and recycle-water
Dilution, splicing are provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage stirs in splicing pond
After mixing, discharged in pulpous state from splicing bottom of pond portion；
Step S3, the pulpous state rubbish of discharge enters desander separation heavy substance, and the heavy substance isolated is by after centralized collection
Landfill yard landfill is sent into, remainder is transported to feed surge pond and carries out heat pre-treatment.
Step S4, the mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out anaerobic fermentation production natural pond
Gas；
Step S5, residues are gone successively in high temperature anaerobic reactor, further fermentation and biogas production；
Step S6, biogas uses after purification as boiler oil caused by upper two step, the fermentation of high temperature anaerobic reactor
After biogas residue afterwards is dehydrated by centrifugal dehydrator, sewage is after sewage purification system as recycle-water for the dilute of step S2
Release；
Step S7, it is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam
There is provided by the methane boiler in step S6, and put into methane boiler and fire as supplement fuel by dried over dry mud
Burn.
As a preferred embodiment of the present invention, the grizzly bar spacing of rotary drum coarse rack is 40~60mm in the step S1；
Kitchen castoff and recycle-water dilution ratio in the step S2, by weight：For 1:8~1:10；Desanding in the step S3
Device uses spiral-flow type desanding device, 30~80s of hydraulic detention time；
In the step S6, sewage purification system uses membrane bioreactor MBR, and membrane flux is controlled in 15~25L/
(m2h)；
In the step S7, steam pressure needed for vacuum drier is 0.2MPa, material water ratio≤10% after drying.
As a preferred embodiment of the present invention, in the step S4, anaeration in normal temperature reactor is justified using the formula that is thoroughly mixed
Column type reactor CSTR, temperature controlling range are 35~38 DEG C, and charging TS concentration is at 8%~12%, reactor hydraulic retention
Between be 15~30 days, control fermentation pH value as 7.5~8.5；To compensate the heating of feed liquid in heat loss and reactor, in reactor
Internal thermocirculator is installed on interior two-way airflow pipe, to keep treatment temperature at 34~38 DEG C；
In the step S5, high temperature anaerobic reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is
52~55 DEG C, charging TS concentration feeds organic loading 6%~10%：4~5kg VS/m3D, it is 6.5 to control fermentation pH value
~7.5；Wherein upflow velocity is controlled in 0.3~0.8m/h, and to ensure upflow velocity, biogas caused by step S4 is passed through into compression
Machine is filled with reactor bottom.
The beneficial effects of the present invention are：Kitchen castoff high temperature combined anaerobic digestion equipment proposed by the present invention and detest
Oxygen digestion method, biogas yield can be improved, while improve the stability of system operation, be easy to recycling, pollutant zero-emission
Put.
Gentle high temperature and CSTR and UASB anaerobic fermentation technologies are combined in present invention utilization, device systems stability
Good, biogas yield is also higher.Single intermediate temperature anaerobic fermentation technology biogas yield is than relatively low, and system is relatively stable, and high temperature anaerobic
Although factor of created gase is increased, system is unstable relatively to be controlled, and needs that material disposably is heated into more than 50 DEG C.Utilize medium temperature
Combined with high-temperature-phase and the anaerobic fermentation method that is combined of CSTR and UASB, the advantages of each side can be made full use of, by medium temperature
Fermentation realizes system stable operation while obtains higher factor of created gase as hot fermentation is carried out again after pretreatment.
The present invention is easily achieved recycling and the zero-emission of kitchen castoff.Kitchen castoff produces natural pond by fermenting
Gas uses after purification as boiler oil；After biogas residue after fermentation is dehydrated and is dried in vacuo by centrifugal dehydrator, as
Supplement fuel, which is put into methane boiler, to burn；System sewage is discarded after sewage purification system as recycle-water for dinner cost
The charge dilution of thing；The steam that thermal source needed for vacuum drying is manufactured by methane boiler provides.Therefore, whole system can accomplish
Biogas, waste residue, sewage zero-discharge, resource make full use of.
Brief description of the drawings
Fig. 1 is the flow chart of anaerobic digestion process of the present invention.
Fig. 2 is the composition schematic diagram of anaerobic digestion facility of the present invention.
Reference is as follows：
1st, charger, 2, feed pump, 3, conveyance conduit
4th, rotary drum coarse rack, 5, disintegrating machine, 6, extruder
7th, Residue extraction pipeline, 8, splicing pond, 9, hydrocyclone
10th, sediment outflow pipeline, 11, feed surge pond, 12, intermediate temperature anaerobic fermentation tank
13rd, high-temperature anaerobic fermentation tank, 14, centrifugal dehydrator, 15, methane boiler
16th, vacuum drier, 17, sewage purification system, 18, reuse water pipe
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment one
Referring to Fig. 2, present invention is disclosed a kind of kitchen castoff high temperature combined anaerobic digestion equipment, the equipment bag
Include：Charger 1, rotary drum coarse rack 4, disintegrating machine 5, extruder 6, splicing pond 8, hydrocyclone 9, feed surge pond 11, medium temperature
Anaerobic fermentation tank 12, high-temperature anaerobic fermentation tank 13, centrifugal dehydrator 14, sewage purification system 17, vacuum drier 16, biogas pot
Stove 15.
The charger 1, rotary drum coarse rack 4, disintegrating machine 5, extruder 6, splicing pond 8, hydrocyclone 9, feed surge
Pond 11, intermediate temperature anaerobic fermentation tank 12, high-temperature anaerobic fermentation tank 13, centrifugal dehydrator 14, sewage purification system 17 are sequentially connected, in
Warm anaerobic fermentation tank 12, high-temperature anaerobic fermentation tank 13 connect methane boiler 15 respectively, and centrifugal dehydrator 14 connects vacuum drier
16, vacuum drier 16 connects methane boiler 15；Sewage purification system 17 connects splicing pond 8, and sewage passes through sewage purification system
Recycle-water is used as after 17, splicing pond 8, the charge dilution for kitchen castoff are connected by reuse water pipe 18.
The charger 1 is used to receive kitchen garbage；Delivery pump 2 and rotary drum coarse rack 4, rotary drum are installed at charger 1
The grizzly bar spacing of coarse rack 4 is 60mm；The component that size is more than grizzly bar spacing is separated, and this part large particulate matter will be concentrated
After being discharged after collection by Residue extraction pipeline, it is sent into landfill yard and carries out landfill stabilization；And size is less than the kitchen garbage of grizzly bar spacing
Enter disintegrating machine through coarse rack.
Pulp after kitchen waste crusher in crushing 5 and extruder 6 extrude, splicing pond 8 is sent into by conveyance conduit 3, is led to
Recycle-water dilution is crossed, splicing is provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage is in splicing
After being stirred in pond, discharged in pulpous state from splicing bottom of pond portion；Kitchen castoff and recycle-water dilution ratio, by weight, it is
1:8~1:10.
The pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, hydraulic detention time 50s；The heavy substance isolated
Be sent into landfill yard landfill after being discharged by sediment outflow pipeline, after centralized collection, remainder be transported to feed surge pond heat it is pre-
Processing.
Mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；Medium temperature
Anaerobic reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, and charging TS concentration exists
10%, reactor hydraulic detention time is 21 days, and it is 7.5~8.5 to control fermentation pH value；To expect in compensation heat loss and reactor
The heating of liquid, internal thermocirculator is installed in reactor on two-way airflow pipe, to keep treatment temperature at 36 DEG C.
Residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；High temperature is detested
Oxygen reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~55 DEG C, and charging TS concentration is entered 8%
Expect organic loading：4~5kg VS/m3D, it is 6.5~7.5 to control fermentation pH value；Wherein upflow velocity is controlled in 0.5m/h, is
Ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is filled with reactor bottom by compressor.
Will caused biogas is after simple purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as biogas
The fuel of boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is net by sewage
Recycle-water is used as after change system, splicing pond is connected to by reuse water pipe, the charge dilution for kitchen castoff；Sewage purification
System uses membrane bioreactor MBR, and membrane flux is controlled at 18L/ (m2h).
It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam by biogas pot
Stove provides, and puts into methane boiler and burn as supplement fuel by dried over dry mud；Steamed needed for vacuum drier
Steam pressure is 0.2MPa, material water ratio≤10% after drying.
The present invention also discloses a kind of anaerobic digestion using above-mentioned kitchen castoff high temperature combined anaerobic digestion equipment
Method, referring to Fig. 1, methods described specifically comprises the following steps：
【Step S1】Kitchen garbage is poured into charger；Delivery pump and rotary drum coarse rack, size are installed at charger
Component more than grizzly bar spacing is separated, and after this part large particulate matter will be discharged after centralized collection by Residue extraction pipeline, send
Enter landfill yard and carry out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing enters disintegrating machine through coarse rack；Rotary drum is thick
The grizzly bar spacing of grid is 60mm (can also be 50~70mm)；
【Step S2】Pulp after kitchen waste crusher in crushing and extruder extruding, then splicing is sent into by conveyance conduit
Pond and recycle-water dilution, splicing are provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage is connecing
After being stirred in material pond, discharged in pulpous state from splicing bottom of pond portion；Kitchen castoff and recycle-water dilution ratio, by weight,
For 1:8~1:10；
【Step S3】The pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, and hydraulic detention time 50s (can also
For other times)；Landfill yard landfill, remainder are sent into after the heavy substance isolated is discharged by sediment outflow pipeline, after centralized collection
It is transported to feed surge pond and carries out heat pre-treatment；
【Step S4】Mixture after above-mentioned heat pre-treatment is placed in progress anaerobic fermentation production in anaeration in normal temperature reactor
Biogas；Anaeration in normal temperature reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, charging
TS concentration (such as can be 8%~12%) 10% or so, reactor hydraulic detention time is 21 days, control the pH value of fermenting to be
7.5~8.5；For the heating of feed liquid in compensation heat loss and reactor, internal heat is installed in reactor on two-way airflow pipe
EGR, to keep treatment temperature 36 DEG C or so (such as can be 34~38 DEG C).
【Step S5】Residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermenting and producing natural pond
Gas；High temperature anaerobic reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~55 DEG C, feeds TS concentration
In 8% or so (such as can be 6%~10%), organic loading is fed：4~5kg VS/m3D, control fermentation pH value be 6.5~
7.5；Wherein upflow velocity is controlled in 0.5m/h, and to ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is passed through
Compressor is filled with reactor bottom；
【Step S6】Will in anaeration in normal temperature reactor and high temperature anaerobic reactor caused biogas after purification, as
The fuel of methane boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is by dirty
Recycle-water is used as after water purification system, the charge dilution of kitchen castoff is used for by recycle-water pipe；Sewage purification system uses
Membrane bioreactor MBR, membrane flux are controlled at 18L/ (m2h)；
【Step S7】It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam
There is provided by methane boiler, and put into methane boiler and burn as supplement fuel by dried over dry mud；Vacuum drying
Steam pressure needed for machine is 0.2MPa, material water ratio≤10% after drying.
Embodiment two
A kind of kitchen castoff high temperature combined anaerobic digestion equipment, the equipment include：Charger, rotary drum coarse rack,
Disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugation
Dewaterer, sewage purification system, vacuum drier, methane boiler.
The charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, medium temperature
Anaerobic fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high temperature
Anaerobic fermentation tank connects methane boiler, centrifugal dehydrator connection vacuum drier, vacuum drier connection methane boiler respectively；It is dirty
Water purification system connection splicing pond, sewage are used as recycle-water after sewage purification system, and splicing pond is connected by reuse water pipe,
Charge dilution for kitchen castoff.
In summary, kitchen castoff high temperature combined anaerobic digestion equipment and anaerobic digestion process proposed by the present invention,
Biogas yield can be improved, while improves the stability of system operation, is easy to recycling, zero release of pollutant.
Here description of the invention and application are illustrative, are not wishing to limit the scope of the invention to above-described embodiment
In.The deformation and change of embodiments disclosed herein are possible, real for those skilled in the art
The replacement and equivalent various parts for applying example are known.It should be appreciated by the person skilled in the art that the present invention is not being departed from
Spirit or essential characteristics in the case of, the present invention can in other forms, structure, arrangement, ratio, and with other components,
Material and part are realized.In the case where not departing from scope and spirit of the present invention, embodiments disclosed herein can be entered
The other deformations of row and change.
Claims (10)
1. a kind of kitchen castoff high temperature combined anaerobic digestion equipment, it is characterised in that the equipment includes：Charger, turn
Drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high temperature anaerobic hair
Fermentation tank, centrifugal dehydrator, sewage purification system, vacuum drier, methane boiler；
The charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, anaeration in normal temperature
Fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high temperature anaerobic
Fermentation tank connects methane boiler, centrifugal dehydrator connection vacuum drier, vacuum drier connection methane boiler respectively；Sewage is net
Change system connection splicing pond, sewage are used as recycle-water after sewage purification system, connect splicing pond by reuse water pipe, are used for
The charge dilution of kitchen castoff；
The charger is used to receive kitchen garbage；Delivery pump and rotary drum coarse rack are installed at charger, rotary drum coarse rack
Grizzly bar spacing is 60mm；The component that size is more than grizzly bar spacing is separated, and this part large particulate matter will be led to after centralized collection
After crossing Residue extraction pipeline discharge, it is sent into landfill yard and carries out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing passes through thick lattice
Grid enter disintegrating machine；
Pulp after kitchen waste crusher in crushing and extruder extruding, is sent into splicing pond by conveyance conduit and recycle-water is dilute
Release, splicing is provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage stirs mixed in splicing pond
After conjunction, discharged in pulpous state from splicing bottom of pond portion；Kitchen castoff and recycle-water dilution ratio, it is 1 by weight:8~1:10；
The pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, hydraulic detention time 50s；The heavy substance isolated is arranged
Landfill yard landfill is sent into after sand pipeline discharge, after centralized collection, remainder is transported to feed surge pond and carries out heat pre-treatment；
Mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；Anaeration in normal temperature
Reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, charging total solids content TS
For concentration 10%, reactor hydraulic detention time is 21 days, control fermentation pH value as 7.5~8.5；For compensation heat loss and medium temperature
The heating of feed liquid in anaerobic reactor, internal thermocirculator is installed in anaeration in normal temperature reactor on two-way airflow pipe, used
To keep treatment temperature at 36 DEG C；
Residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；High temperature anaerobic is anti-
Device is answered to use up-flow sludge bed reactor UASB, temperature controlling range is 52~55 DEG C, and charging total solids content TS concentration exists
8%, feed organic loading：4~5kg VS/m3D, it is 6.5~7.5 to control fermentation pH value；Wherein upflow velocity control exists
0.5m/h, to ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is filled with high temperature anaerobic by compressor and reacted
Device bottom；
Will caused biogas is after simple purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as methane boiler
Fuel use, high temperature anaerobic reactor fermentation after biogas residue be dehydrated by centrifugal dehydrator after, sewage passes through sewage purification system
Recycle-water is used as after system, splicing pond is connected to by reuse water pipe, the charge dilution for kitchen castoff；Sewage purification system
Using membrane bioreactor MBR, membrane flux is controlled at 18L/ (m2h)；
It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam and carried by methane boiler
For, and put into methane boiler and burn as supplement fuel by dried over dry mud；Vapour pressure needed for vacuum drier
Power is 0.2MPa, material water ratio≤10% after drying.
2. a kind of kitchen castoff high temperature combined anaerobic digestion equipment, it is characterised in that the equipment includes：Charger, turn
Drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, intermediate temperature anaerobic fermentation tank, high temperature anaerobic hair
Fermentation tank, centrifugal dehydrator, sewage purification system, vacuum drier, methane boiler；
The charger, rotary drum coarse rack, disintegrating machine, extruder, splicing pond, hydrocyclone, feed surge pond, anaeration in normal temperature
Fermentation tank, high-temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system are sequentially connected, intermediate temperature anaerobic fermentation tank, high temperature anaerobic
Fermentation tank connects methane boiler, centrifugal dehydrator connection vacuum drier, vacuum drier connection methane boiler respectively；Sewage is net
Change system connection splicing pond, sewage are used as recycle-water after sewage purification system, connect splicing pond by reuse water pipe, are used for
The charge dilution of kitchen castoff.
3. kitchen castoff high temperature combined anaerobic digestion equipment according to claim 2, it is characterised in that：
The charger is used to receive kitchen garbage；Delivery pump and rotary drum coarse rack are installed, size is more than grizzly bar at charger
The component of spacing is separated, and after this part large particulate matter will be discharged after centralized collection by Residue extraction pipeline, is sent into landfill yard
Carry out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing enters disintegrating machine through coarse rack.
4. kitchen castoff high temperature combined anaerobic digestion equipment according to claim 2, it is characterised in that：
Pulp after kitchen waste crusher in crushing and extruder extruding, is sent into splicing pond by conveyance conduit and recycle-water is dilute
Release, splicing is provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage stirs mixed in splicing pond
After conjunction, discharged in pulpous state from splicing bottom of pond portion.
5. kitchen castoff high temperature combined anaerobic digestion equipment according to claim 2, it is characterised in that：
Enter hydrocyclone separation heavy substance from the pulpous state rubbish of splicing bottom of pond portion discharge, the heavy substance isolated is by sediment outflow pipe
Landfill yard landfill is sent into after road discharge, after centralized collection, remainder is transported to feed surge pond and carries out heat pre-treatment.
6. kitchen castoff high temperature combined anaerobic digestion equipment according to claim 5, it is characterised in that：
Mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；Mesophilic digestion
Residue afterwards is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；
Will caused biogas is after simple purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as methane boiler
Fuel use, high temperature anaerobic reactor fermentation after biogas residue be dehydrated by centrifugal dehydrator after, sewage passes through sewage purification system
Recycle-water is used as after system, splicing pond is connected to by reuse water pipe, the charge dilution for kitchen castoff；
It is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam and carried by methane boiler
For, and put into methane boiler and burn as supplement fuel by dried over dry mud.
7. a kind of anaerobic digestion process of kitchen castoff high temperature combined anaerobic digestion equipment using described in claim 1,
Characterized in that, methods described specifically comprises the following steps：
Step S1, kitchen garbage is poured into charger；Delivery pump and rotary drum coarse rack are installed, size is more than grid at charger
The component of stripe pitch is separated, and after this part large particulate matter will be discharged after centralized collection by Residue extraction pipeline, is sent into landfill
Field carries out landfill stabilization；And the kitchen garbage that size is less than grizzly bar spacing enters disintegrating machine through coarse rack；Rotary drum coarse rack
Grizzly bar spacing is 60mm；
Step S2, kitchen waste crusher in crushing and extruder extruding after pulp, then by conveyance conduit be sent into splicing pond and
Recycle-water dilutes, and splicing is provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage is in splicing pond
In be stirred after, in pulpous state from splicing bottom of pond portion discharge；Kitchen castoff and recycle-water dilution ratio, it is 1 by weight:8
~1:10；
Step S3, the pulpous state rubbish of discharge enters hydrocyclone separation heavy substance, hydraulic detention time 50s；The weight isolated
Landfill yard landfill is sent into after material is discharged by sediment outflow pipeline, after centralized collection, remainder is transported to feed surge pond and added
Grape berry；
Step S4, the mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；
Anaeration in normal temperature reactor is 35~38 DEG C using formula cylindrical reactor CSTR, temperature controlling range is thoroughly mixed, and is fed total solid
For body content TS concentration 10%, reactor hydraulic detention time is 21 days, control fermentation pH value as 7.5~8.5；To compensate heat waste
The heating for the feed liquid in reactor of becoming estranged, is provided with internal thermocirculator, to keep locating in reactor on two-way airflow pipe
Temperature is managed at 36 DEG C；
Step S5, the residue after mesophilic digestion is gone successively in high temperature anaerobic reactor, further fermentation and biogas production；High temperature
Anaerobic reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~55 DEG C, charging total solids content TS
Concentration feeds organic loading 8%：4~5kg VS/m3D, it is 6.5~7.5 to control fermentation pH value；Wherein upflow velocity control
Make in 0.5m/h, to ensure upflow velocity, caused biogas in anaeration in normal temperature reactor is filled with reactor bottom by compressor
Portion；
Step S6, will caused biogas is after purification in anaeration in normal temperature reactor and high temperature anaerobic reactor, as biogas
The fuel of boiler uses, and after the biogas residue after the fermentation of high temperature anaerobic reactor is dehydrated by centrifugal dehydrator, sewage is net by sewage
Recycle-water is used as after change system, the charge dilution of kitchen castoff is used for by recycle-water pipe；Sewage purification system is given birth to using film
Thing reactor MBR, membrane flux are controlled at 18L/ (m2h)；
Step S7, it is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam by natural pond
Gas boiler provides, and puts into methane boiler and burn as supplement fuel by dried over dry mud；Vacuum drier institute
It is 0.2MPa to need steam pressure, material water ratio≤10% after drying.
A kind of 8. anaerobic digestion using one of claim 2 to 6 kitchen castoff high temperature combined anaerobic digestion equipment
Method, it is characterised in that methods described specifically comprises the following steps：
Step S1, kitchen garbage is poured into charger；Delivery pump and rotary drum coarse rack are installed, size is more than grid at charger
The component of stripe pitch is separated, and this part large particulate matter will carry out landfill stabilization by landfill yard is sent into after centralized collection；And chi
The very little kitchen garbage less than grizzly bar spacing enters disintegrating machine through coarse rack；
Step S2, pulp after kitchen waste crusher in crushing and extruder extrude, splicing pond and recycle-water dilution are re-fed into,
Splicing is provided with agitator in pond, and to ensure that the rubbish in splicing pond is well mixed, kitchen garbage is stirred in splicing pond
Afterwards, discharged in pulpous state from splicing bottom of pond portion；
Step S3, the pulpous state rubbish of discharge enters desander separation heavy substance, and the heavy substance isolated is sent into after centralized collection
Landfill yard fills, and remainder is transported to feed surge pond and carries out heat pre-treatment；
Step S4, the mixture after above-mentioned heat pre-treatment is placed in anaeration in normal temperature reactor and carries out producing methane through anaerobic fermentation；
Step S5, residues are gone successively in high temperature anaerobic reactor, further fermentation and biogas production；
Step S6, biogas uses after purification as boiler oil caused by upper two step, after the fermentation of high temperature anaerobic reactor
After biogas residue is dehydrated by centrifugal dehydrator, sewage is used for step S2 dilution after sewage purification system as recycle-water；
Step S7, it is dried in vacuo by the mud cake after centrifugal dehydration into vacuum drier, dries required steam by step
Methane boiler in rapid S6 provides, and puts into methane boiler and burn as supplement fuel by dried over dry mud.
9. anaerobic digestion process according to claim 7, it is characterised in that：
The grizzly bar spacing of rotary drum coarse rack is 40~60mm in the step S1；Kitchen castoff and recycle-water in the step S2
Dilution ratio, by weight：For 1:8~1:10；Desander uses spiral-flow type desanding device, hydraulic detention time in the step S3
30~80s；
In the step S6, sewage purification system uses membrane bioreactor MBR, and membrane flux is controlled at 15~25L/ (m2h)；
In the step S7, steam pressure needed for vacuum drier is 0.2MPa, material water ratio≤10% after drying.
10. anaerobic digestion process according to claim 7, it is characterised in that：
In the step S4, using formula cylindrical reactor CSTR is thoroughly mixed, temperature controlling range is anaeration in normal temperature reactor
35~38 DEG C, for charging total solids content TS concentration 8%~12%, reactor hydraulic detention time is 15~30 days, control hair
Ferment pH value is 7.5~8.5；For the heating of feed liquid in compensation heat loss and reactor, installed in reactor on two-way airflow pipe
There is internal thermocirculator, to keep treatment temperature at 34~38 DEG C；
In the step S5, high temperature anaerobic reactor uses up-flow sludge bed reactor UASB, and temperature controlling range is 52~
55 DEG C, charging total solids content TS concentration feeds organic loading 6%~10%：4~5kg VS/m3D, control fermentation pH
It is worth for 6.5~7.5；Wherein upflow velocity is controlled in 0.3~0.8m/h, to ensure upflow velocity, by biogas caused by step S4
Reactor bottom is filled with by compressor.
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| CN109081551A (en) * | 2018-09-25 | 2018-12-25 | 成都熠铭机械设备制造有限公司 | A kind of dry fertilizer manufacture of septic tank sludge cryogenic condensation |
| CN109593638B (en) * | 2019-01-02 | 2021-09-24 | 大连理工大学 | System and method for promoting degradation and methanation utilization of polylactic acid plastic through hydrothermal pretreatment |
| CN111454833A (en) * | 2020-03-11 | 2020-07-28 | 上海交通大学 | System and method for recycling distributed biological waste |
| CN111439906A (en) * | 2020-03-17 | 2020-07-24 | 四川深蓝环保科技有限公司 | Biogas residue circulating hydrothermal reduction system and technology |
| DE102021004122A1 (en) * | 2021-08-11 | 2023-02-16 | Bta International Gmbh | Process and device for hydrodynamic heavy matter separation with high efficiency |
| CN114342880B (en) * | 2021-11-12 | 2023-09-12 | 源创环境科技有限公司 | System and method for comprehensively treating classified wet garbage through biological recycling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080104A (en) * | 2010-07-09 | 2011-06-01 | 深圳市东江环保股份有限公司 | Comprehensive treatment method for preparing gas and fertilizer by utilizing kitchen waste |
| CN102527701A (en) * | 2012-01-06 | 2012-07-04 | 北京昊海天际科技有限公司 | Comprehensive treating system for domestic wastes |
| CN102688881A (en) * | 2011-03-24 | 2012-09-26 | 上海万帝环境技术有限公司 | Urban kitchen waste recycling utilization and harmless treatment technology |
| CN102836863A (en) * | 2012-08-30 | 2012-12-26 | 北京世纪国瑞环境工程技术有限公司 | Comprehensive treatment method for kitchen waste, town excrement and municipal sludge |
| CN205501316U (en) * | 2016-03-28 | 2016-08-24 | 上海万帝环境技术有限公司 | Anaerobic digestion equipment is united to high temperature in discarded object of meal kitchen |
-
2016
- 2016-03-28 CN CN201610182035.0A patent/CN105602844B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080104A (en) * | 2010-07-09 | 2011-06-01 | 深圳市东江环保股份有限公司 | Comprehensive treatment method for preparing gas and fertilizer by utilizing kitchen waste |
| CN102688881A (en) * | 2011-03-24 | 2012-09-26 | 上海万帝环境技术有限公司 | Urban kitchen waste recycling utilization and harmless treatment technology |
| CN102527701A (en) * | 2012-01-06 | 2012-07-04 | 北京昊海天际科技有限公司 | Comprehensive treating system for domestic wastes |
| CN102836863A (en) * | 2012-08-30 | 2012-12-26 | 北京世纪国瑞环境工程技术有限公司 | Comprehensive treatment method for kitchen waste, town excrement and municipal sludge |
| CN205501316U (en) * | 2016-03-28 | 2016-08-24 | 上海万帝环境技术有限公司 | Anaerobic digestion equipment is united to high temperature in discarded object of meal kitchen |
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