CN212039794U - Combined equipment for three-waste co-treatment in process of treating kitchen waste by hermetia illucens - Google Patents
Combined equipment for three-waste co-treatment in process of treating kitchen waste by hermetia illucens Download PDFInfo
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- CN212039794U CN212039794U CN202020550266.4U CN202020550266U CN212039794U CN 212039794 U CN212039794 U CN 212039794U CN 202020550266 U CN202020550266 U CN 202020550266U CN 212039794 U CN212039794 U CN 212039794U
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Abstract
The utility model discloses a heisui river horsefly handles kitchen garbage process three wastes and handles combination equipment altogether, this equipment include closed breed factory building, aerobic reaction ware, fenton oxidation pond, kitchen garbage storage chamber, anaerobic reactor, two heavy ponds and ozone disinfection ponds, and the screen cloth is installed to the lower part in the kitchen garbage storage chamber, for depositing the kitchen garbage chamber above the screen cloth, is the swill pond below. The utility model discloses can improve the foul smell degradation rate in the breed process and reduce treatment cost by a wide margin.
Description
Technical Field
The utility model belongs to environmental protection resource regeneration field discloses a kitchen garbage feeds coprocessing combined equipment of "three wastes" that heisui river horsefly process produced, realizes that the process of breeding foul smell degradation rate 100%, reaches the technical target of useless emission and waste water cyclic utilization of nothing.
Background
The population of China accounts for 21.0 percent of the total population of the world, and the domestic garbage yield of China is at the head of the world. In Guangzhou, for example, 2800 tons of kitchen waste are generated per day, which amounts to 90 ten thousand tons per year. After the 'notice of the house and urban and rural construction department and other departments of China about the comprehensive development of the domestic garbage classification work in the nationwide grade and above cities' is released in 2221 year and 6 months, the domestic garbage recycling rate is required to reach more than 37 percent. The proportion of the municipal solid waste to the Chinese food and kitchen waste exceeds 2/3 meshesThe kitchen waste is treated in the manner of breeding the hermetia illucens to become a hotspot technology in the field of environmental protection, but odor generated in the breeding process of the hermetia illucens is greatly enriched in a breeding area and is diffused to the surrounding space along a concentration gradient. The odor component is mainly inorganic molecule NH3、H2S, organic molecule CH3SH 、CH3NH2Indole, and the like. The odor generated by the aquaculture seriously affects the quality of surrounding living environment, and the odor control of the aquaculture is a key field of future atmospheric control from the environmental protection development trend of China, the promise of carbon emission reduction of the international society and the observation of economic development strategy. At present, no targeted treatment technology is provided for the odor generated in the black soldier fly breeding process. Therefore, the treatment of the odor becomes a bottleneck problem of recycling kitchen waste resources in the future.
The current treatment technology for odor mainly comprises the following steps: physical adsorption, chemical oxidation, incineration, traditional biological methods, plant liquid spraying, plasma decomposition, photocatalytic oxidation, and the like, which have been newly developed in recent years. The incineration method, the plasma decomposition method and the photocatalytic oxidation method have high treatment efficiency, but have large equipment investment, high operation cost and complex maintenance, and finally, a chimney with the length of 15m for high-altitude discharge of the treated gas is still required. In contrast, the biological treatment method, which has the lowest investment and operation cost, is gradually paid attention and becomes one of the main methods for treating malodorous gases, but the method is limited in practical application because the water-gas contact time is difficult to control, and particularly, some macromolecular odor components which are not easy to dissolve in water are difficult to directly remove. Therefore, it is necessary to develop new processes to overcome the above technical defects.
The process of breeding the hermetia illucens by utilizing the kitchen waste has the following main sources of odor: the organic matter is decayed in the garbage placing or fermenting process to generate odor; the black soldier fly produces odor in the metabolic process; and the kitchen waste swill and the domestic sewage generate odor during treatment, wherein the feeding process, namely the odor in the cultivation factory occupies the largest proportion, and is the key of odor treatment. Therefore, the utility model discloses at first to breed the bed and inject the foul smell in minimum scope with the printing opacity sealed cowling, plant again in the sealed cowling and climb rattan plant or turf, play the effect that absorbs and purifies a small amount of remaining foul smell and improve the breed environment, traditional big-arch shelter formula is compared to this mode and the room foul smell degree descends more than 95%. Secondly, the utility model discloses according to the foul smell nature with the stink in the micromolecule such as ammonia, hydrogen sulfide easily soluble in water and the gas composition of slightly soluble in water utilize the waste water treatment facility to adsorb earlier out, carry out biochemical treatment through the nitrification and the assimilation of microorganism, medicament quantity when then follow-up other stink material fenton oxidation of significantly reducing makes the degradation more thorough. In addition, a venturi tube is designed in the Fenton oxidation pond to improve a gas-water mixing mode, so that the technical goals of 100% degradation rate of odor substances and zero emission of waste gas are achieved, and the odor treatment cost is reduced by over 30%.
Disclosure of Invention
The utility model aims at providing a heisui river horsefly handles kitchen garbage process three wastes and handles combination equipment altogether, it can improve the foul smell degradation rate in the breed process and reduce treatment cost by a wide margin.
The utility model provides a pair of heisui river horsefly handles kitchen garbage process three wastes and handles combination equipment altogether, this equipment includes closed breed factory building, aerobic reactor, fenton oxidation pond, kitchen garbage storage chamber, anaerobic reactor, two heavy ponds and ozone disinfection pond, the screen cloth is installed to the lower part in the kitchen garbage storage chamber, for depositing kitchen garbage room above the screen cloth, following swill pond, wherein, closed breed factory building's gas transmission pipeline connects the aerobic reactor, install centrifugal fan on the gas transmission pipeline, aerobic reactor top gas outlet is through the second valve, the fan connects the gas inlet in airtight fenton oxidation pond, the reaction liquid export of fenton oxidation pond bottom connects the venturi inlet tube in the fenton oxidation pond through circulating pump and third valve all the way, another way passes through the circulating pump, the fourth valve connects the swill pond in the kitchen garbage storage chamber, the gas outlet of depositing kitchen garbage room top in the kitchen garbage storage chamber connects the fifth valve through, The fan is connected with the gas inlet of the Fenton oxidation tank, one path of the water outlet of the aerobic reactor is connected with the secondary sedimentation tank through the ninth valve and the fourth water pump, the water outlet of the secondary sedimentation tank is connected with the water inlet of the ozone disinfection tank, the other path of the water outlet of the aerobic reactor is connected with the water inlet of the anaerobic reactor through the first valve, the first water pump, the sixth valve and the second water pump, the water outlet of the swill tank is connected with the water inlet of the anaerobic reactor through the sixth valve and the second water pump, the water outlet of the anaerobic reactor is connected with the water inlet of the aerobic reactor through the eighth valve and the third water pump, and the gas outlet at the top of the anaerobic reactor is connected with the gas inlet of the.
In the aforesaid, the breed area of closed breed factory building is provided with a plurality of beds of breeding, and every is bred the bed and is provided with the gas collection cover, and every gas collection cover top has the bucket type inlet scoop that leaks down, and all leak down bucket type inlet scoops pass through the air duct and are connected with gas transmission pipeline.
In the above, the gas collecting cover is made of a light-transmitting material.
In the aerobic reactor, the bottom of the aerobic reactor is provided with a gas distribution pipe, the middle part of the aerobic reactor is provided with a packing layer, and the gas distribution pipe is communicated with a gas transmission pipeline.
In the above, the top of the Fenton oxidation tank is provided with a hydrogen peroxide dosing pipe, an iron salt dosing pipe and an acid dosing pipe, and the interior of the Fenton oxidation tank is provided with a first pH detector.
In the above, set up between swill pond outlet and sixth valve and add alkali pipe, set up the second pH detector before the pump of second water pump.
In the above, the inside of the ozone disinfection tank is provided with the ultraviolet sterilization lamp, the bottom of the ozone disinfection tank is provided with the ozone distribution pipe, and the ozone distribution pipe is connected with the ozone generator.
The utility model discloses following beneficial effect has:
1. in the existing odor treatment technology, the Fenton oxidation method has the characteristics of thorough degradation of odor substances, low treatment cost, easiness in control of operation and the like, but the existing method of mixing air and water by using an air spray type reverse flow air suction mode causes short retention time of waste gas of a reactor, is difficult to eliminate invalid contact phenomenon, causes technical bottleneck in improvement of waste gas degradation rate, and finally still discharges part of waste gas. The utility model greatly improves the dissolving rate and the reaction rate of the odor substance and the volume load of the odor substance treatment by designing the air-water mixing mode of the Venturi tube, so that the volume of the reactor is reduced by more than 2 times, and the occupied area and the equipment cost are greatly reduced; and through the closed design of the reactor, on one hand, the negative pressure is more favorably formed, the contact power of gas molecules and Fenton reaction liquid is increased, and the degradation rate of odor substances reaches 100 percent; on the other hand, the odor in each structure is automatically brought into the pool under the action of negative pressure, and a low-power fan is not needed or only needed to transmit gas, so that the power consumption is greatly reduced, and no waste gas is discharged thoroughly.
2. According to the characteristics that the ammonia accounts for than high in the foul smell that the process of breeding produced, the utility model discloses utilize the characteristic that the ammonia is easily soluble in water, at first with the ammonia through aerobic biofilm reactor, the micromolecule such as hydrogen sulfide is easily soluble in water and the gas composition of slightly soluble in water adsorbs out, through biomembrane extension aqueous vapor contact time, make ammonia clearance more than 99%, the nitrification and the assimilation of recycling microorganism handle the ammonia, micromolecule water-soluble gas composition such as hydrogen sulfide, on the one hand the at utmost reduces the treatment cost of this type of foul smell material, on the other hand the medicament quantity in follow-up fenton oxidation pond that can significantly reduce, make other foul smell material degradation more thorough.
3. The utility model discloses carry out system design with "three wastes" that kitchen garbage breeds heisui river horsefly process produced, arrange into kitchen garbage storage room swill pond with fenton solution, utilize the swill to adjust the fenton solution pH value after the reaction and flow back again in the waste water biochemical treatment pond, the alkali dosage that can significantly reduce is more than 60%. With CO as an end product of molecular degradation of organic odors2Mainly, the inorganic carbon source required by denitrification is greatly supplemented after the inorganic carbon source is refluxed to the anaerobic reactor. In addition, after each waste water and odor treatment facility is covered and sealed, the waste water and the odor are discharged into the Fenton oxidation pond through the gas transmission pipeline, and the top of the oxidation pond generates negative pressure to mix gas and water, so that the odor is more favorably discharged and subjected to oxidation reaction, and the technical aim of no exhaust gas discharge is achieved. Compared with the prior art, the total cost of odor treatment is reduced by more than 30 percent.
Drawings
FIG. 1 is a process flow diagram of the present invention.
In the figure, 1-an anaerobic reactor, 2-an aerobic reactor, 3-a secondary sedimentation tank, 4-an ozone disinfection tank, 5-a closed cultivation factory, 6-a kitchen waste storage chamber, 7-a Fenton oxidation tank, 8-an air guide pipe, 9-a centrifugal fan, 10-an air transmission pipeline, 11-a first water pump, 12-a first valve, 13-an air distribution pipe, 14-a packing layer, 15-a second valve, 16-a fan, 17-an acid adding pipe, 18-a first pH detector, 19-a hydrogen peroxide dosing pipe, 20-an iron salt dosing pipe, 21-a venturi water inlet pipe, 22-a third valve, 23-a circulating pump, 24-a fourth valve, 25-a fifth valve, 26-a kitchen waste storage chamber and 27-a screen, 28-swill pool, 29-alkali adding pipe, 30-sixth valve, 31-second water pump, 32-second pH detector, 33-seventh valve, 34-eighth valve, 35-third water pump, 36-ninth valve, 37-fourth water pump, 38-ultraviolet sterilizing lamp, 39-ozone distributing pipe, 40-ozone generator, 41-tenth valve, 42-fifth water pump and 43-gas collecting cover.
Detailed Description
Referring to fig. 1, the utility model provides a heisui river horsefly handles kitchen garbage process three wastes and handles combination equipment altogether, this equipment includes closed breed factory building 5, aerobic reactor 2, fenton oxidation pond 7, kitchen garbage storage chamber 6, anaerobic reactor 1, two heavy ponds 3 and ozone disinfection pond 4, screen cloth 27 is installed to kitchen garbage storage chamber 6 middle and lower part, screen cloth 27 is above for depositing kitchen garbage chamber 26, below is swill pool 28, wherein, the breed area of closed breed factory building 5 is provided with a plurality of breed beds, each breed bed is provided with gas collection cover 43, gas collection cover 43 is made by printing opacity material, there is the bucket formula inlet scoop of falling hourglass in every gas collection cover 43 top, all the bucket formula inlet scoop of falling hourglass pass through air duct 8 and are connected with gas pipeline 10, gas pipeline 10 is last to install centrifugal fan 9, gas pipeline 10 connects aerobic reactor 2, the bottom of the aerobic reactor 2 is provided with a gas distribution pipe 13, the middle part is provided with a packing layer 14, and the gas distribution pipe 13 is communicated with the gas transmission pipeline 10. The top gas outlet of the aerobic reactor 2 is connected with the gas inlet of the closed Fenton oxidation tank 7 through a second valve 15 and a fan 16, the top of the Fenton oxidation tank 7 is provided with a hydrogen peroxide dosing pipe 19, an iron salt dosing pipe 20 and an acid dosing pipe 17, and the interior of the Fenton oxidation tank is provided with a first pH detector 18. One path of a reaction liquid outlet at the bottom of the Fenton oxidation pond 7 is connected with a Venturi water inlet pipe 21 in the Fenton oxidation pond 7 through a circulating pump 23 and a third valve 22, the other path of the reaction liquid outlet is connected with a swill pond 28 in a kitchen waste storage chamber 6 through the circulating pump 23 and a fourth valve 24, a gas outlet at the top of a kitchen waste storage chamber 26 in the kitchen waste storage chamber 6 is connected with a gas inlet of the Fenton oxidation pond 7 through a fifth valve 25 and a fan 16, one path of a water outlet of the aerobic reactor 2 is connected with a secondary sedimentation tank 3 through a ninth valve 36 and a fourth water pump 37, a water outlet of the secondary sedimentation tank 3 is connected with a water inlet of an ozone disinfection tank 4, an ultraviolet sterilization lamp 38 is arranged in the ozone disinfection tank 4, an ozone distributing pipe 39 is arranged at the bottom, the ozone distributing pipe 39 is connected with an ozone generator 40, and a water outlet of the ozone generator 40 is connected with a water inlet. The other path of the water inlet of the aerobic reactor 2 is connected with the water outlet of the anaerobic reactor 1 through an eighth valve 34 and a third water pump 35, the other path of the water outlet of the aerobic reactor 2 is connected with the water inlet of the anaerobic reactor 1 through a first valve 12, a first water pump 11, a sixth valve 30 and a second water pump 31, the water outlet of the swill pool 28 is connected with the water inlet of the anaerobic reactor 1 through the sixth valve 30 and the second water pump 31, an alkali adding pipe 29 is arranged between the outlet of the swill pool and the sixth valve 30, and a second pH detector 32 is arranged in front of the pump of the second water pump 31. The water outlet of the anaerobic reactor 1 is connected with the water inlet of the aerobic reactor 2 through an eighth valve 34 and a third water pump 35, and the gas outlet at the top of the anaerobic reactor 1 is connected with the gas inlet of the Fenton oxidation tank 7 through a seventh valve 33 and a fan 16.
Application example:
100 tons of kitchen waste are treated in a certain market of Guangdong province as an implementation object, the black soldier fly cultivation factory 5 is a closed cultivation room 5, a cultivation area is provided with 3 layers of three-dimensional cultivation beds, the length is 3 meters and the width is 1.5 meters, odor generated is collected through a box-type gas collection cover 43, the top of the cover is provided with inverted funnel-type air suction openings, all the inverted funnel-type air suction openings are connected with a gas pipeline 10 through gas guide pipes 8, and the amount of the conveyed odor is about 126 ten thousand meters3/d。
The calculation of the amount of the odor of the sewage plant can determine the amount of the odor according to the area of water, the integral capping of the structure can determine the amount of the odor according to the volume of space, the partial capping of the pool surface can determine the amount of the odor according to the opening area and the wind speed, and the amount of the odor can also be determined according to the number of devices.
The commonly used odor quantity calculation method is that the air exchange quantity is calculated according to the ventilation quantity, the air exchange quantity is 2-3 times/h in places where people do not enter or generally do not enter, the air exchange quantity is 2-3.5 times/h in the space where people enter but the working time is not long, and the odor quantity is equal to the sum of the product of the volume of the space above the water surface of each structure and the ventilation quantity.
According to the odor generation rule and characteristics, the centrifugal fan 9 is started to start the ventilation system for ventilation 1 hour after feeding every time, and the centrifugal fan 9 is closed after continuously sucking for 2 hours. After stopping working for 1 hour, starting again, and entering an intermittent working mode, namely starting to ventilate once every 10 minutes for 3 hours after starting every 40 minutes.
The box-type gas collection cover 43 is made of light-transmitting materials such as organic glass, fixing frames are arranged at intervals of 40-50 cm along the long side direction of the culture bed, and are used for climbing vine plants such as brocade vines to attach.
The model of a centrifugal fan 9 connected with the gas transmission pipeline 10 is 10D, the power is 39kw, and the exhaust volume is 21000m3Setting 2 sets of each fan with working frequency of 5 times/h and working time of 6 min/time, sending odor into an aerobic reactor 2 with air inflow of 5000m3The bottom of the aerobic reactor 2 is provided with an air distribution pipe 13 and covers a pebble layer, the height of the pebbles is about 1/10 of the well depth, the middle part of the well is provided with a packing layer 14, the height of the packing layer 14 is about 1/5 of the well depth, the packing layer can be formed by packing materials such as plastic wave plates or polystyrene fiber balls, the retention time of odor is more than 5-15s, the ammonia in the odor can be fully dissolved in water, and the ammonia removal rate is more than 99%. After ammonia removal, odor is discharged from the top air duct 8, the pressure drop of air flow is 1.0-1.7 cm of water column, and the odor enters the closed Fenton oxidation pond 7.
The top of the sealed Fenton oxidation pond 7 is provided with an acid adding pipe 17, a first pH detector 18, a hydrogen peroxide dosing pipe 19, an iron salt dosing pipe 20 and a Venturi water inlet pipe 21. A hydrogen peroxide solution with the content of 21 percent is added into a hydrogen peroxide dosing tube 19, and a ferric salt dosing tube 20 is saturated FeSO4Adding sulfuric acid or hydrochloric acid solution into the solution via an acid adding pipe 17, and adjusting pH value to 4.0-5.0 via a first pH detector 18. Fenton oxygenReaction liquid in the pond 7 gets into venturi inlet tube 21 through bottom outlet pipe, circulating pump 23 and third valve 22, gets back to the fenton oxidation pond 7 again and carries out cyclic utilization, forms the negative pressure through this mode in the fenton oxidation pond 7 and makes odor and fenton reaction liquid fully mix and by thorough oxidative degradation in each gas transmission pipeline, does not have exhaust emission.
The Fenton oxidation pond 7 is configured with 2, alternately operates, stops air inlet at certain time intervals, discharges the air into the swill pool 28 of the kitchen waste storage chamber 6 through the circulating pump 23 and the fourth valve 24, and stays for more than 1h to eliminate the influence of possibly residual hydrogen peroxide on the activated sludge in the anaerobic reactor 1.
The effluent of the swill pool 28 at the lower part of the kitchen waste storage chamber 6 enters the anaerobic reactor 1 through the sixth valve 30 and the second water pump 31 for treatment. The gas outlet at the top of the kitchen waste storage chamber 26 in the kitchen waste storage chamber 6 enters the Fenton oxidation pond 7 through the fifth valve 25 and the fan 16 to completely oxidize and decompose the odor.
Effluent of the aerobic reactor 2 enters the secondary sedimentation tank 3 through the ninth valve 36 and the fourth water pump 37, the top of the secondary sedimentation tank is closed, a small amount of odorous gas at the top of the secondary sedimentation tank enters the Fenton oxidation tank 7 through the second valve 15 and the fan 16, and the air and water are mixed by utilizing the principle that the top of the secondary sedimentation tank generates negative pressure, so that the time of oxidative degradation of the odor in the reaction tank is not limited, and the mode ensures that the odor generated in the black soldier fly breeding process reaches zero emission.
The present invention is not limited to the above embodiments, and the embodiments and the description only describe the main features and advantages of the present invention, and any other products can be obtained by the teaching of the present invention, regardless of any changes in the shape or structure, and all the same or similar technical solutions as the present invention are within the protection scope.
Claims (7)
1. The three-waste co-treatment combined equipment in the process of treating kitchen waste by using hermetia illucens is characterized by comprising a closed cultivation factory building, an aerobic reactor, a fenton oxidation pond, a kitchen waste storage chamber, an anaerobic reactor, a secondary sedimentation pond and an ozone disinfection pond, wherein a screen mesh is arranged at the middle lower part of the kitchen waste storage chamber, a kitchen waste storage chamber is arranged above the screen mesh, and a swill pond is arranged below the screen mesh, wherein a gas pipeline of the closed cultivation factory building is connected with the aerobic reactor, a centrifugal fan is arranged on the gas pipeline, a gas outlet at the top of the aerobic reactor is connected with a gas inlet of the closed fenton oxidation pond through a second valve and the fan, one path of a reaction liquid outlet at the bottom of the fenton oxidation pond is connected with a venturi water inlet pipe in the fenton oxidation pond through a circulating pump and a valve, the other path of the reaction liquid outlet is connected with the swill pond in the kitchen waste storage chamber through the circulating pump and a fourth valve, The fan is connected with the gas inlet of the Fenton oxidation tank, one path of the water outlet of the aerobic reactor is connected with the secondary sedimentation tank through the ninth valve and the fourth water pump, the water outlet of the secondary sedimentation tank is connected with the water inlet of the ozone disinfection tank, the other path of the water outlet of the aerobic reactor is connected with the water inlet of the anaerobic reactor through the first valve, the first water pump, the sixth valve and the second water pump, the water outlet of the swill tank is connected with the water inlet of the anaerobic reactor through the sixth valve and the second water pump, the water outlet of the anaerobic reactor is connected with the water inlet of the aerobic reactor through the eighth valve and the third water pump, and the gas outlet at the top of the anaerobic reactor is connected with the gas inlet of the.
2. The heisui river horsefly kitchen waste treatment process three wastes combined treatment combined equipment as claimed in claim 1, wherein a plurality of culture beds are arranged in a culture area of the closed culture plant, each culture bed is provided with a gas collection cover, a reversed-leakage bucket type air suction opening is arranged at the top of each gas collection cover, and all the reversed-leakage bucket type air suction openings are connected with a gas pipeline through gas guide pipes.
3. The heisui river fly kitchen waste treatment process three wastes combined treatment equipment as claimed in claim 2, characterized in that the gas collection cover is made of light-transmitting material.
4. The heisui river horsefly kitchen waste treatment process three-waste co-treatment combined equipment as claimed in claim 1, is characterized in that an air distribution pipe is arranged at the bottom of the aerobic reactor, a packing layer is arranged in the middle of the aerobic reactor, and the air distribution pipe is communicated with an air conveying pipeline.
5. The heisui river horsefly kitchen waste treatment process three-waste co-treatment combination equipment as claimed in claim 1, is characterized in that a hydrogen peroxide dosing pipe, an iron salt dosing pipe and an acid dosing pipe are arranged at the top of the Fenton oxidation pond, and a first pH detector is arranged inside the Fenton oxidation pond.
6. The combined device for co-processing the three wastes in the process of treating the kitchen waste by the black soldier flies according to claim 1, wherein an alkali adding pipe is arranged between the outlet of the swill pool and the sixth valve, and a second pH detector is arranged behind a pump of the second water pump.
7. The combined equipment for the three-waste co-treatment in the process of treating the kitchen waste by the hermetia illucens according to claim 1, wherein an ultraviolet sterilizing lamp is arranged in the ozone disinfection pool, an ozone distributing pipe is arranged at the bottom of the ozone disinfection pool, and the ozone distributing pipe is connected with an ozone generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020550266.4U CN212039794U (en) | 2020-04-15 | 2020-04-15 | Combined equipment for three-waste co-treatment in process of treating kitchen waste by hermetia illucens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020550266.4U CN212039794U (en) | 2020-04-15 | 2020-04-15 | Combined equipment for three-waste co-treatment in process of treating kitchen waste by hermetia illucens |
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| Publication Number | Publication Date |
|---|---|
| CN212039794U true CN212039794U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020550266.4U Expired - Fee Related CN212039794U (en) | 2020-04-15 | 2020-04-15 | Combined equipment for three-waste co-treatment in process of treating kitchen waste by hermetia illucens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212039794U (en) |
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2020
- 2020-04-15 CN CN202020550266.4U patent/CN212039794U/en not_active Expired - Fee Related
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