CN105624034A - Method for processing organic trash through dry type anaerobic fermentation equipment - Google Patents
Method for processing organic trash through dry type anaerobic fermentation equipment Download PDFInfo
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Abstract
The invention discloses a method for processing organic trash through dry type anaerobic fermentation equipment. The dry type anaerobic fermentation equipment comprises a feed device, a fermenting device and a discharge device. The fermenting device comprises a fermenting tank, a plurality of stirrers, a hot water circulating heating coiled pipe and an integral biogas collecting device. The discharge device comprises a vacuum tank, an air compressor and a vacuum pump. The method includes the following specific steps of firstly, conducting feeding, wherein organic trash materials are input into the fermenting tank through the feed device; secondly, conducting fermenting to produce gas, wherein the fermenting tank is heated through the hot water circulating heating coiled pipe, stirring and fermenting are conducted, and biogas is produced and collected through the integral biogas collecting device; thirdly, vacuum discharge is conducted through the discharge device. The method is high in biogas yield, low in biogas slurry yield and low in water consumption, can automatically and continuously produce biogas through organic materials with solid content larger than 20%, and is particularly suitable for anaerobic fermentation production of organic materials with low water content and high impurity content.
Description
Technical field
The invention belongs to organic garbage treatment technical field, it relates to the treatment process of a kind of organic waste, it is specifically related to a kind of method adopting dry-type anaerobic fermentation device process organic waste.
Background technology
Organic waste of the present invention comprises food garbage, rubbish from cooking, fruit vegetables rubbish, food market garbage, classification domestic refuse, fowl and animal excrement, agriculture and animal husbandry stalk, straw, municipal sludge, organic matter solid waste such as poultry of dying of illness. Owing to classification mechanism is not perfect in China, tradition organic waste usually adopts landfill, burns or aerobic compost processing mode. Owing to can utilize the restriction in soil, landfill faces more and more difficult addressing problem in China; Although burning and can obtaining good reduction, but the higher organic waste of water ratio often makes burning cost greatly increase; Organic waste compost is one-hundred-year history on China is existing, but it exists some row problems such as odor pollution, product outlet, causes aerobic compost thoroughly cannot effectively solve extensive organic waste and centrally disposes problem.
And organic waste can be turned waste into wealth by anaerobically fermenting product natural pond technology, its biogas produced belongs to renewable biomass energy, belongs to the new forms of energy of the replacement fossil oil of country's encourage growth, and in the epoch of world's energy scarcity, this point is particularly important. Anaerobic fermentation technology can be divided into dry type (solid content 20-40%) and wet type (solid content < 15%) to ferment two classes according to the difference of charging solid content.
In recent years, wet type anaerobic fermentation technology obtains more application in the food garbage that process water ratio is higher, major cause is that input and output material and fermentation equipment are required relatively low by wet type anaerobically fermenting, but it brings simultaneously water loss is big, fermentor tank interior laminate layer causes scum silica frost and heavy sand accumulation problem, cause producing natural pond to be interrupted, and high consumption water causes natural pond liquid measure to increase, cost of sewage disposal significantly increases.
Dry-type anaerobic fermentation is intended to keep the original solid content state of organic waste to carry out fermentation gas, and the material (solid content > 60%) that only concentration is high especially just needs thin up. Therefore, adopting dry anaerobic fermentation process, do not need to add water, the follow-up natural pond fluid dewatering of reduction and cost of sewage disposal, anaerobic jar adopts high loading fermentation simultaneously, and its fermentor tank volume is little compared with wet type anaerobic fermentation tank.
But, dry-type anaerobic fermentation is relatively high to equipment requirements such as input and output material and fermentation stirrings, and this core technology is substantially based on external import at present, mainly contains French VALORGA, the DRANCO of Belgium, the KOMPOGAS of Switzerland and Germany's BTV technique. The domestic company that can independently build and run dry type anaerobism technology is few, and correlation technique is still in the starting stage, causes applying of this technology to be extremely restricted.
Summary of the invention
It is an object of the invention to according to above-mentioned the deficiencies in the prior art part, a kind of organic waste dry-type anaerobic fermentation device and method are provided, by having, axle spiral or ram pump mode realize charging to this fermentation unit, material stirring is realized by horizontal agitator, and heavy material is pushed into discharge end by feed end by the movable floor arranged by bottom, discharging adopts vacuum interval discharge method, and above-mentioned technology can effectively solve dry-type anaerobic fermentation tank input and output material and stir the difficult problems such as homogeneous.
For achieving the above object, the present invention provides a kind of method adopting dry-type anaerobic fermentation device process organic waste, and this dry-type anaerobic fermentation device comprises: feeding unit, fermentation unit and drawing mechanism; Described feeding unit comprises feed auger and material inlet valve; Described fermentation unit comprises:
Fermentation tank;
The some agitators being arranged in fermentation tank, this agitator comprises agitating vane and stir shaft;
It is arranged on the hot water circulation heated coil pipe of fermentation tank outer wall; And
It is arranged on the integral type sludge gas collecting device at fermentation tank top;
Described drawing mechanism comprises:
Vacuum tank, it controls the slag material in fermentation tank to the transfer of vacuum tank by top row slag tube valve, bottom row slag tube valve and vacuum tank material inlet valve; The bottom of this vacuum tank is also provided with vacuum tank discharging tube valve, to control the discharge of slag material in vacuum tank;
The air compressor machine being connected with vacuum tank by pipeline, this air compressor machine passes through air compressor machine air outlet valve gate control air to the input of vacuum tank; And
The vacuum pump being connected with vacuum tank by pipeline, this vacuum pump controls vacuum pump from vacuum tank sucking-off air by vacuum pump admission air valve;
The method comprises following concrete steps:
Step 1, charging: organic waste material is input in fermentation tank by feeding unit;
Step 2, fermentation gas: heat fermentation tank by hot water circulation heated coil pipe, is adopted agitator to stir, fermentation, produces biogas, collected the biogas produced by integral type sludge gas collecting device;
Step 3, adopts drawing mechanism Vacuum discharge.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, the feed process of described step 1 is: opens feed auger and material inlet valve, is squeezed in fermentation tank by organic waste material.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, described feeding unit also comprises high-pressure washing water interface, when material water ratio is too low, utilizes this high-pressure washing water interface high-pressure flush to assist charging.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, in step 2, fermentation time is 20-25 days, and temperature is 55 �� 2 DEG C.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, in step 2, agitator speed is at 2-3 rev/min.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, described fermentation unit also comprises the movable floor being arranged on bottom fermentation tank, and this movable floor is driven by hydraulic efficiency plant; In fermentation step, the movable floor bottom this is driven back and forth by hydraulic efficiency plant, makes bottom heavy substance progressively be pushed into end by front end, then pushes back to front end by end, and reciprocating frequence is 1-2 time/5 minutes.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, described fermentation unit also comprises: the some stragith edges being disposed on movable floor, the angle between stragith edge and movable floor is 20-30 ��.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, described fermentation unit also comprises: the coated rock wool heat-preservation layer being arranged on heating coil; Fermentation tank is rectangular parallelepiped, adopt Reinforced Concrete Structure or steel construction, fermentation tank outer wall circulating hot water coil pipe is arranged from dense to sparse along fermentation tank length direction, heating coil calculates according to local climate condition to be determined, to compensate the tank body calorific loss that charging and fermentor tank dispel the heat and bring, circulating hot water coil pipe, by automatic temp Controlling System, makes tank body temperature degree remain constant.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, described fermentation unit comprises 1-10 group agitator, often organizes agitator and drives by motor independent separately; The stirrer shaft often organizing agitator is vertical with fermentation tank length direction; Agitating vane is door case type, and horizontal interval is arranged on the sidepiece of stir shaft.
The method of above-mentioned employing dry-type anaerobic fermentation device process organic waste, wherein, in step 3, discharging flow process comprises:
Step 3.1, closes vacuum tank material inlet valve, vacuum tank discharge valve and air compressor machine give vent to anger valve, open vacuum pump admission air valve, opens vacuum pump, pressure in vacuum tank is evacuated to-2000��-4000Pa;
Step 3.2, close vacuum pump admission air valve and vacuum pump, open vacuum tank material inlet valve, and according to concrete discharge demand, select open top part scum pipe valve or bottom row slag tube valve, material in fermentation tank, under suction function, is sucked up in vacuum tank, closes rapidly vacuum tank material inlet valve;
Step 3.3, open discharge valve bottom vacuum tank, open air compressor machine simultaneously and give vent to anger valve and start air compressor machine so that air injects in vacuum tank from vacuum tank top, the discharge valve bottom vacuum tank of material in tank is discharged, thus completes the discharging flow process of whole anaerobic jar.
Method biogas output height, the natural pond output of fluid of employing dry-type anaerobic fermentation device provided by the invention process organic waste are low, water consumes the plurality of advantages such as low, solid content > 20% organic materials Automatic continuous can be realized and produce natural pond, especially be applicable to the organic materials anaerobically fermenting that water ratio is low, foreign matter content is high and produce.
Accompanying drawing explanation
Fig. 1 is the schematic cross section of a kind of organic waste dry-type anaerobic fermentation device of the present invention.
Fig. 2 is the longitudinal section schematic diagram of a kind of organic waste dry-type anaerobic fermentation device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the invention will be further described, and these embodiments, only for illustration of the present invention, are not limiting the scope of the invention.
As shown in Figure 1 and Figure 2, a kind of organic waste dry-type anaerobic fermentation device that the present invention adopts, it comprises: feeding unit, fermentation unit and drawing mechanism.
Described feeding unit comprises charging driving 1 and the preferred pneumatic knife plate valve of material inlet valve 3(); Preferably, also comprise high-pressure washing water interface 2, can pressure-bearing 1.6MPa. Described charging drives 1 can select feed auger or ram pump, it is preferable that feed auger, it is more preferable to ground is for there being axle spiral. Feed auger end adopts angle-inserting type enter material way, and feed auger end is provided with tiltedly plugs in feed-pipe, and itself and fermentor walls connection section are to running the not little 500mm of liquid level.
Described fermentation unit comprises:
Fermentation tank 23, it is preferable to rectangular parallelepiped, can adopt Reinforced Concrete Structure or steel construction;
Some (the preferred 1-10 group) agitator 20 being arranged in fermentation tank, this agitator comprises agitating vane 21 and stir shaft 22; Preferably, often organize agitator to drive by motor independent separately; The stirrer shaft 22 often organizing agitator is vertical with fermentation tank length direction; Agitating vane 21 is in door case type, and horizontal interval is arranged on the sidepiece of stir shaft;
It is arranged on the hot water circulation heated coil pipe 17 of fermentation tank outer wall, it is arranged from dense to sparse along fermentation tank 23 length direction, heating coil 17 calculates according to local climate condition to be determined, to compensate the tank body calorific loss that charging and fermentor tank dispel the heat and bring, circulating hot water coil pipe, by automatic temp Controlling System, makes tank body moderate temperature maintain 55 �� 2 DEG C; And
It is arranged on the integral type sludge gas collecting device 19 at fermentation tank top.
More preferably, described fermentation unit also comprises: being arranged on the movable floor 6 bottom fermentation tank 23, this movable floor is driven by hydraulic efficiency plant 5.
More preferably, described fermentation unit also comprises: the some stragith edges 7 being disposed on movable floor 6.
More preferably, described fermentation unit also comprises: the coated rock wool heat-preservation layer 18 being arranged on heating coil 17.
Described drawing mechanism comprises:
Vacuum tank 13, it controls the transfer of the slag material in fermentation tank to vacuum tank 13 by top row slag tube valve 8, bottom row slag tube valve 9 and vacuum tank material inlet valve 12; The bottom of this vacuum tank 13 is also provided with vacuum tank discharging tube valve 14, to control the discharge of slag material in vacuum tank;
The air compressor machine 10 being connected with vacuum tank 13 by pipeline, this air compressor machine 10 controls the input of air to vacuum tank 13 by air compressor machine valve 15 of giving vent to anger; And
The vacuum pump 11 being connected with vacuum tank 13 by pipeline, this vacuum pump 11 controls vacuum pump from vacuum tank 13 sucking-off air by vacuum pump admission air valve 16.
The method of employing dry-type anaerobic fermentation device provided by the invention process organic waste comprises following concrete steps:
Step 1, charging: organic waste material is input in fermentation tank by feeding unit;
Step 2, fermentation gas: heat fermentation tank by hot water circulation heated coil pipe, is adopted agitator to stir, fermentation, produces biogas, collected the biogas produced by integral type sludge gas collecting device;
Step 3, adopts drawing mechanism Vacuum discharge.
Wherein, in step 3, discharging flow process specifically comprises:
Step 3.1, closes vacuum tank material inlet valve, vacuum tank discharge valve and air compressor machine give vent to anger valve, open vacuum pump admission air valve, opens vacuum pump, pressure in vacuum tank is evacuated to-2000��-4000Pa;
Step 3.2, close vacuum pump admission air valve and vacuum pump, open vacuum tank material inlet valve, and according to concrete discharge demand, select open top part scum pipe valve or bottom row slag tube valve, material in fermentation tank, under suction function, is sucked up in vacuum tank, closes rapidly vacuum tank material inlet valve;
Step 3.3, open discharge valve bottom vacuum tank, open air compressor machine simultaneously and give vent to anger valve and start air compressor machine so that air injects in vacuum tank from vacuum tank top, the discharge valve bottom vacuum tank of material in tank is discharged, thus completes the discharging flow process of whole anaerobic jar.
Embodiment
The present embodiment is specifically related to a kind of organic waste dry-type anaerobic fermentation device and method, this dry-type anaerobic fermentation device by the following method (i.e. principle) operate:
Utilize feed auger 1 to input in fermentor tank material to half tank liquid level that dehydration natural pond slag, mud, river bottom mud etc. can be used for anaerobically fermenting inoculation, start outer circulation Hot water heating coils and fermentation jar temperature is increased to 55 DEG C, debug charging amount gradually, until anaerobic fermentation tank starts to produce gas, and reach design feed loading. maintain design charging amount every day, feed process is, open feed auger 1 and spiral material inlet valve 3, organic waste material is squeezed in fermentor tank, when material water ratio is too low, high pressure water can being utilized to assist charging by high pressure water interface 2, feed auger 1 end feed-pipe and fermentor walls angle 30-45 ��, organic materials is squeezed into anaerobic fermentation tank gradually. the present invention also can adopt ram pump alternative feeds spiral to realize anaerobic jar charging. enter the 20-25 days organic materials residence time of anaerobic jar, fermentor tank can adopt Reinforced Concrete Structure or steel construction, fermentor tank is rectangular shape, rectangular parallelepiped size can be changed according to treatment scale, fermentor tank outer wall arranges external circulation heating coil pipe 17, Temperature Feedback automatic control mode can be passed through, in conjunction with outer wall (except diapire) rock wool heat-preservation layer 18(insulation layer thickness 50-100mm according to envrionment temperature and charging amount), it is achieved in fermentor tank, temperature maintains 55 �� 2 DEG C. organic materials in fermentor tank realizes material homogeneous by agitator, and accelerate biochemical reaction, fermenter stirrer 20 drives stir shaft 22, design gate frame type stirring blade 21 on stir shaft, agitating vane 21 adopts horizontal interval to be arranged symmetrically with mode (namely stir shaft both sides paddle is positioned at same plane) centered by stir shaft 22, mixing speed is at 2-3 rev/min, movable floor 6 is set bottom fermentor tank, movable floor 6 arranges stragith edge 7, stragith edge 7 and movable floor 6 level angle 20-30 ��, movable floor 6 moves reciprocatingly under movable floor hydraulic efficiency plant 5 drives, 1-2 time/5 minutes reciprocal time, bottom heavy substance is made progressively to be pushed into end by front end, the material of stirring dead angle area can be made to realize stirring by the mode landed layer by layer simultaneously, the biogas that anaerobism produces drains into biogas utilization unit through integral type sludge gas collecting device 19, integral type sludge gas collecting device 19 is positioned at fermentor tank top center position, it also comprises manhole, vision slit, biogas foam separator, high low-pressure protective valve, pressure warning unit, thermometer, the affiliated facilities such as pH meter, for ease of observing fermentation inner canister situation further, it is equipped with visor 4 in fermentor tank charging and discharge end sidewall, fermentor tank adopts interval sequence batch (discharge method, its workflow is, close vacuum tank material inlet valve 12, discharge valve 14 and air compressor machine are given vent to anger valve 15, open vacuum pump admission air valve 16 and open vacuum pump 11, pressure in vacuum tank 13 is evacuated to-2000��-4000Pa, close vacuum pump admission air valve 16 and vacuum pump 11, open vacuum tank material inlet valve 12, and according to concrete discharge demand, select open top part scum pipe valve 8 or bottom row slag tube valve 9, material in fermentor tank is under negative pressure (-2000��-4000Pa) acts on, it is sucked up in vacuum tank 13, close rapidly vacuum tank material inlet valve 12, open discharge valve 14 bottom vacuum tank, start air compressor machine to give vent to anger valve 15 and start air compressor machine 10 simultaneously, pressurized air (0.4-0.8MPa) injects in vacuum tank from vacuum tank 13 top, make outside in tank, material is exhausted from system, complete the discharging flow process of whole anaerobic jar. the continuous product natural pond being realized anaerobic jar by flow processs such as above-mentioned charging, temperature compensation, fermentation, dischargings is run.
Organic waste dry-type anaerobic fermentation device provided by the invention, adopt spiral or ram pump charging, independent horizontal formula agitator, hot water circulation is incubated, bottom movable floor shakes out and Vacuum discharge mode, greatly improves the relevant equipment of dry type anaerobic jar and technical barrier that equipment failure rate that Controlling System complexity is brought is high. Relative traditional wet anaerobically fermenting, reduces the required pond of fermentation and holds, and greatly reduce natural pond output of fluid, greatly reduce follow-up cost of sewage disposal. Therefore, no matter from the viewpoint of equipment, efficiency, natural pond output of fluid etc., this device is obtained for very big improvement compared with other anaerobic ferment devices.
Although the content of the present invention has made detail by above preferred embodiment, but it should recognize that above-mentioned description is not considered as limitation of the present invention. After those skilled in the art have read foregoing, multiple amendment for the present invention and replacement will be all apparent. Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. one kind adopts the method for dry-type anaerobic fermentation device process organic waste, it is characterised in that, this dry-type anaerobic fermentation device comprises: feeding unit, fermentation unit and drawing mechanism; Described feeding unit comprises feed auger (1) and material inlet valve (3); Described fermentation unit comprises:
Fermentation tank (23);
The some agitators (20) being arranged in fermentation tank, this agitator comprises agitating vane (21) and stir shaft (22);
It is arranged on the hot water circulation heated coil pipe (17) of fermentation tank outer wall; And
It is arranged on the integral type sludge gas collecting device (19) at fermentation tank top;
Described drawing mechanism comprises:
Vacuum tank (13), it controls the slag material in fermentation tank to the transfer of vacuum tank (13) by top row slag tube valve (8), bottom row slag tube valve (9) and vacuum tank material inlet valve (12); The bottom of this vacuum tank (13) is also provided with vacuum tank discharging tube valve (14), to control the discharge of slag material in vacuum tank;
The air compressor machine (10) being connected with vacuum tank (13) by pipeline, this air compressor machine (10) by air compressor machine give vent to anger valve (15) control the input of air to vacuum tank (13); And
The vacuum pump (11) being connected with vacuum tank (13) by pipeline, this vacuum pump (11) controls vacuum pump from vacuum tank (13) sucking-off air by vacuum pump admission air valve (16);
The method comprises following concrete steps:
Step 1, charging: organic waste material is input in fermentation tank (23) by feeding unit;
Step 2, fermentation gas: heat fermentation tank (23) by hot water circulation heated coil pipe (17), is adopted agitator (20) to stir, fermentation, produces biogas, collected the biogas produced by integral type sludge gas collecting device (19);
Step 3, adopts drawing mechanism Vacuum discharge.
2. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, the feed process of described step 1 is: opens feed auger (1) and material inlet valve (3), is squeezed in fermentation tank by organic waste material.
3. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 2, it is characterized in that, described feeding unit also comprises high-pressure washing water interface (2), when material water ratio is too low, utilizes this high-pressure washing water interface (2) high-pressure flush to assist charging.
4. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, in step 2, fermentation time is 20-25 days, and temperature is 55 �� 2 DEG C.
5. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 4, it is characterised in that, in step 2, agitator speed is at 2-3 rev/min.
6. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, described fermentation unit also comprises the movable floor (6) being arranged on fermentation tank (23) bottom, and it is driven by hydraulic efficiency plant (5); In step 2 fermenting process, the movable floor (6) bottom this is driven back and forth by hydraulic efficiency plant (5), makes bottom heavy substance progressively be pushed into end by front end, then pushes back to front end by end, and reciprocating frequence is 1-2 time/5 minutes.
7. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 6, it is characterized in that, described fermentation unit also comprises: the some stragith edges (7) being disposed on movable floor (6), the angle between this stragith edge (7) and movable floor (6) is 20-30 ��.
8. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, described fermentation unit also comprises: the coated rock wool heat-preservation layer (18) being arranged on heating coil (17); Fermentation tank is rectangular parallelepiped, adopt Reinforced Concrete Structure or steel construction, fermentation tank outer wall circulating hot water coil pipe is arranged from dense to sparse along fermentation tank length direction, heating coil calculates according to local climate condition to be determined, to compensate the tank body calorific loss that charging and fermentor tank dispel the heat and bring, circulating hot water coil pipe, by automatic temp Controlling System, makes tank body temperature degree remain constant.
9. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, described fermentation unit comprises 1-10 group agitator, often organizes agitator and drives by motor independent separately; The stirrer shaft (22) often organizing agitator is vertical with fermentation tank length direction; Agitating vane (21) is in door case type, and horizontal interval is arranged on the sidepiece of stir shaft.
10. the method adopting dry-type anaerobic fermentation device process organic waste as claimed in claim 1, it is characterised in that, in step 3, discharging flow process comprises:
Step 3.1, closes vacuum tank material inlet valve (12), vacuum tank discharge valve (14) and air compressor machine give vent to anger valve (15), open vacuum pump admission air valve (16), opens vacuum pump, pressure in vacuum tank is evacuated to-2000��-4000Pa;
Step 3.2, close vacuum pump admission air valve (16) and vacuum pump (11), open vacuum tank material inlet valve (12), and according to concrete discharge demand, selecting open top part scum pipe valve (8) or bottom row slag tube valve (9), the material in fermentation tank, under suction function, is sucked up in vacuum tank, then, close vacuum tank material inlet valve (12);
Step 3.3, open discharge valve (14) bottom vacuum tank, open air compressor machine to give vent to anger valve (15) and start air compressor machine (10) simultaneously, air is made to inject in vacuum tank from vacuum tank top, the discharge valve (14) bottom vacuum tank of material in tank is discharged, thus completes the discharging flow process of whole anaerobic jar.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111996106A (en) * | 2020-07-31 | 2020-11-27 | 宁波大学 | Dry-type two-phase anaerobic fermentation device and fermentation method for kitchen waste |
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| CN106881334A (en) * | 2017-03-23 | 2017-06-23 | 爱壹可（厦门）生物科技有限公司 | Animals and plants fermenting organic material mechanism of degradation |
| CN109136073A (en) * | 2018-10-31 | 2019-01-04 | 湖北农谷能源建设有限公司 | High concentration organic waste dry-type anaerobic system |
| CN110498698A (en) * | 2019-07-26 | 2019-11-26 | 穗农环保生物科技(深圳)有限公司 | Refuse treatment plant |
| CN111304065A (en) * | 2020-04-02 | 2020-06-19 | 上海环境工程设计研究院有限公司 | Fruit and vegetable wet anaerobic fermentation device based on gas stirring and working method thereof |
| CN111996106A (en) * | 2020-07-31 | 2020-11-27 | 宁波大学 | Dry-type two-phase anaerobic fermentation device and fermentation method for kitchen waste |
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