CN211595453U

CN211595453U - Kitchen garbage biological treatment system of prepareeing material

Info

Publication number: CN211595453U
Application number: CN201922444025.1U
Authority: CN
Inventors: 张太平; 王昭月; 喻乔; 郝莺飞; 李彦培
Original assignee: Guangzhou Yilufeng Ecological Environmental Protection Technology Co ltd; South China University of Technology SCUT
Current assignee: Guangzhou Yilufeng Ecological Environmental Protection Technology Co ltd; South China University of Technology SCUT
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-29
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a kitchen waste biological treatment material preparation system, which comprises a filtrate separation and filtrate oil-water separation system, a feed crushing system and an automatic feeding system; the filtrate separation and filtrate oil-water separation system comprises a raw material bin, a filter layer, a percolate discharge pipe and an air-floating oil-water separator; the feeding and crushing system comprises a conveying belt, a crusher, a feeding hopper outlet, an electric valve, a moisture sensor, a pressure sensor, a spiral propeller, a material inlet and a material outlet; the automatic feeding system comprises an auxiliary material bin, a quantitative feeder is arranged below the auxiliary material bin, and an outlet of the quantitative feeder is arranged above a material inlet. The utility model discloses a filtrating separation and filtrating oil-water separation system, the broken system of feeding and automatic feed system handle kitchen garbage, can process kitchen garbage into heisui river horsefly's foodstuff, and the biotransformation through heisui river horsefly changes high quality insect protein and worm excrement fertilizer at last to it can obtain fine processing to be kitchen garbage.

Description

Kitchen garbage biological treatment system of prepareeing material

Technical Field

The utility model relates to a kitchen garbage handles technical field, in particular to kitchen garbage biological treatment system of prepareeing material.

Background

The kitchen waste generally refers to raw materials and finished products or residues required in the daily diet, such as perishable waste like leftovers, fruit peels, eggshells, etc. In recent years, with the increasing living standard of people and the increase of population in China, the yield of the kitchen waste shows a remarkable growth trend. It is mainly composed of starch, cellulose, protein, lipid and other organic matters and inorganic salt, and has the characteristics of high water content (up to 80-95%), high salt content, easy decay, odor generation, more nutrient substances and the like. In 2018, the amount of kitchen garbage produced in China reaches 1.022 hundred million tons, the daily average waste yield is 28 ten thousand tons, and the daily output per capita is about 0.20 kg.

The kitchen waste contains more organic components and water, so the kitchen waste is easy to react with microorganisms to cause rottenness and deterioration, and the longer the storage time is, the more serious the rottenness is. Particularly in summer, the decay and deterioration of the artificial wetland are accelerated due to over-high temperature, and a large amount of leachate and odor are easy to breed, so that the artificial wetland brings harm to the environment and the sanitation. Secondly, meat protein and animal fat substances contained in the kitchen waste mainly come from livestock and poultry providing meat food, and after the livestock directly eat food waste which is not effectively treated, the livestock easily generates a 'similar stage', so that the potential risk of homologous protein pollution is brought; as well as cross-infection of diseases between humans and animals, endangering human health, and possibly promoting the spread of certain fatal diseases, thereby causing large-scale infection of the disease. Therefore, how to treat the kitchen garbage in a recycling, harmless and reducing way becomes a problem which is urgently needed to be solved at present.

At present, a sound kitchen waste treatment management system is not established, and a corresponding management policy and a proper treatment technology are lacked. The traditional treatment mode of the kitchen waste mainly comprises incineration and landfill, and the incineration treatment is adopted, so that harmful gas is easily generated, and the landfill mode easily causes soil and underground water pollution. The most common treatment mode is to mix the domestic garbage into the domestic garbage and directly mix the domestic garbage for landfill or directly transport the domestic garbage to a farm for pig feeding, so that the difficulty of domestic garbage treatment is increased, and a large amount of available resources are wasted. With the improvement of knowledge on kitchen waste, classification and individual treatment of kitchen waste are gradually realized, landfill treatment methods are eliminated, and resource treatment replaces the traditional treatment methods, wherein composting, feed treatment and energy treatment are receiving more attention.

The aerobic composting generally requires that the initial water content is optimized to be between 40% and 60%, and the void ratio is more than 40%; organic content > 30%; the carbon-nitrogen ratio (C/N) is 20-35: 1, excessive ammonia loss can be caused by too low carbon-nitrogen ratio, and the temperature rise is not suitable (the low efficiency of N energy metabolism); the C/N is too high, the cell synthesis is delayed, the degradation is incomplete, and the finished product enters the soil and then nitrogen starvation occurs to compete for soil nutrients. The initial composition of the composting material is critical to the composting process and the quality of the compost product. The carbon-nitrogen ratio of the initial raw materials in the kitchen waste is generally higher than the optimal value, and regulators such as nitrogen fertilizer aqueous solution, excrement, sludge and the like are usually added to be regulated to be below 30. Therefore, the kitchen waste and the livestock and poultry breeding waste are subjected to combined treatment to produce the organic fertilizer or the soil conditioner, the method is an innovative idea for realizing the resource utilization of the waste, and has obvious advantages and potentials.

Compared with the traditional landfill treatment, the cost for treating the kitchen waste by breeding the hermetia illucens, the yellow mealworms and the like is low, and the economic benefit is high. The black soldier fly is a saprophytic soldier fly, can eat livestock and poultry excrement and domestic garbage, has the characteristics of rapid propagation, large biomass, wide feeding property, high absorption and conversion rate, easy management, low feeding cost and good animal palatability, and is harmless to human, livestock, animals and plants. The life cycle of the hermetia illucens is 40-45 days, and 4 stages of eggs, larvae, pupae and adults are needed. The 10 days after the hermetia illucens are just hatched into larvae from eggs is the period with the strongest capability of treating the kitchen waste, and the larvae grow into pupae, mate and lay eggs after the pupae are broken, and then survive for about several days and die. The kitchen waste is crushed and then mixed with bran, sawdust, straw powder and the like, and the water content is adjusted to be about 70-86%. In the process of eating the garbage, the hermetia illucens can change 80% of the kitchen garbage into self high-quality insect protein and 20% of the kitchen garbage into nutrient-rich insect manure organic fertilizer through the biotransformation of the hermetia illucens and kinetic energy consumption.

By analyzing and monitoring main components and water contents of kitchen waste and other agricultural and forestry wastes, researching and developing a composting and material preparing system, optimizing and intelligently adjusting and controlling conditions such as initial water content, porosity, organic matter content, carbon-nitrogen ratio (C/N) and the like required by aerobic fast composting or insect feed in feeding; constructing a co-substrate synergistic fermentation or insect treatment system by using kitchen waste rich in carbohydrate and lipid and agricultural and forestry wastes such as livestock, poultry, excrement and the like rich in nitrogen and phosphorus according to a metabolism synergistic theory to produce a humic soil fertilizer with a soil conditioning function and a fertilizing function; the adoption of the biological filter bed in combination with the ecological soil purification technology, the realization of aspects such as odor pollution control in the whole fermentation process at low cost and the like are all aspects which are urgently needed to be researched, developed and perfected in the technical route and process for treating kitchen waste and agricultural and forestry waste in China at present.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a kitchen garbage biological treatment system of prepareeing material, solved the not good problem of kitchen garbage processing.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a kitchen waste biological treatment material preparation system comprises a filtrate separation and filtrate oil-water separation system, a feed crushing system and an automatic feeding system;

the filtrate separation and filtrate oil-water separation system comprises a raw material bin, a filter layer is arranged in the raw material bin, a percolate discharge pipe is arranged at the lower end of the raw material bin, and the percolate discharge pipe is connected with an air-floating oil-water separator;

the feeding and crushing system comprises a conveying belt and a crusher, one end of the conveying belt is arranged in the raw material bin above the filter layer, the other end of the conveying belt is arranged above the crusher, the lower end of the crusher is connected with a feeding hopper, a feeding hopper outlet is arranged below the feeding hopper, an electric valve is arranged on the feeding hopper outlet, a moisture sensor and a pressure sensor are arranged at the lower end of the feeding hopper, a spiral propeller is connected below the feeding hopper outlet, one end of the spiral propeller is provided with a material inlet matched with the feeding hopper outlet, and a material outlet is arranged at the other end of the spiral propeller;

the automatic feeding system comprises an auxiliary material bin, a quantitative feeder is arranged below the auxiliary material bin, and an outlet of the quantitative feeder is arranged above the material inlet.

Further, still include PLC control system, host computer and converter, PLC control system respectively with moisture sensor, pressure sensor, the host computer with the converter is connected, the converter with the constant feeder is connected.

Furthermore, the PLC control system is also connected with an audible and visual alarm.

Further, a material sensor is arranged on one side of the material inlet.

Further, the conveyer belt comprises a horizontal part arranged in the raw material bin and an inclined part arranged at the right end of the horizontal part.

Further, the feeder hopper lower extreme is the inclined plane, electric valve locates the lower extreme of inclined plane.

By adopting the technical scheme, as the kitchen waste is treated by the filtrate separation and filtrate oil-water separation system, the feeding crushing system and the automatic feeding system, the kitchen waste can be processed into food of hermetia illucens, and finally, the hermetia illucens are biologically converted into high-quality insect protein and insect manure organic fertilizer, so that the kitchen waste can be well treated.

Drawings

FIG. 1 is a schematic plane structure diagram of a kitchen waste biological treatment material preparation system of the present invention;

fig. 2 is the utility model discloses a planar structure schematic diagram of air-floating oil-water separator in kitchen garbage biological treatment feed preparation system.

Figures and their description:

1. an air-floating oil-water separator; 2. a percolate discharge pipe; 3. a filter layer; 4. a raw material bin; 5. a conveyor belt; 6. an upper computer; 7. a crusher; 8. an audible and visual alarm; 9. a PLC control system; 10. a frequency converter; 11. an auxiliary material bin; 12. a constant feeder; 13. a material sensor; 14. a material outlet; 15. a screw propeller; 16. a material inlet; 17. a pressure sensor; 18. an electrically operated valve; 19. a moisture sensor; 20. a feed hopper; 21. a device housing; 22. a hydraulic screen; 23. a water pump; 24. a water inlet pipeline of the dissolved air tank; 25. a return flow pipe; 26. an air inlet pipe; 27. an air compressor; 28. a pressure dissolved air tank; 29. an air floatation tank; 30. a dissolved air releaser; 31. installing a water inlet pipeline; 32. a water inlet pipeline of the air flotation tank; 33. a thermal resistor; 34. heating a tube; 35. a capacitive liquid level gauge; 36. an oil wiper; 37. an oil discharge groove; 38. and a water discharge pipe.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-2, the utility model provides a kitchen waste biological treatment material preparation system, which comprises a filtrate separation and filtrate oil-water separation system, a feed crushing system and an automatic feeding system;

the filtrate separation and filtrate oil-water separation system comprises a raw material bin 4, a filter layer 3 is arranged in the raw material bin 4, a percolate discharge pipe 2 is arranged at the lower end of the raw material bin 4, and the percolate discharge pipe 2 is connected with an air-flotation oil-water separator 1;

the feeding and crushing system comprises a conveying belt 5 and a crusher 7, one end of the conveying belt 5 is arranged in the raw material bin 4 above the filter layer 3, the other end of the conveying belt 5 is arranged above the crusher 7, the lower end of the crusher 7 is connected with a feeding hopper 20, a feeding hopper outlet is arranged below the feeding hopper 20, an electric valve 18 is arranged on the feeding hopper outlet, a moisture sensor 19 and a pressure sensor 17 are arranged at the lower end of the feeding hopper 20, a spiral propeller 15 is connected below the feeding hopper outlet, a material inlet 16 matched with the feeding hopper outlet is arranged at one end of the spiral propeller 15, and a material outlet 14 is arranged at the other end of the spiral propeller 15;

the automatic feeding system comprises an auxiliary material bin 11, a quantitative feeder 12 is arranged below the auxiliary material bin 11, and an outlet of the quantitative feeder 12 is arranged above a material inlet 16.

The air-floating oil-water separator 1 of the technical scheme comprises a device shell 21, wherein a hydraulic sieve 22, a water pump 23, a dissolved air tank water inlet pipeline 24, a return water pipe 25, an air inlet pipe 26, an air compressor 27, a pressure dissolved air tank 28, an air flotation tank 29, a dissolved air releaser 30, a device water inlet pipeline 31, an air flotation tank 29 water inlet pipeline, a thermal resistor 33, a heating pipe 34, a capacitor liquid level device 35, an oil scraper 36, an oil discharge tank 37 and a water discharge pipe 38 are arranged in the device shell 21. The hydraulic screen 22 is connected with the percolate discharge pipe 2 by means of the device water inlet conduit 31, the air floatation tank 29 is connected with the pressure dissolved air tank 28 through the return water pipe 25, the water pump 23 and the dissolved air tank water inlet pipe 24 in sequence, the air compressor 27 is connected with the pressure dissolved air tank 28 through the air inlet pipe 26, the dissolved air releaser 30 is connected with the pressure dissolved air tank 28, the dissolved air releaser 30 is arranged in the air floatation tank 29, the hydraulic screen 22 is connected with the air floatation tank 29 through an inlet pipeline of the air floatation tank 29, the thermal resistor 33, the heating pipe 34 and the capacitor liquid level device 35 are arranged in the air floatation tank 29, the oil wiper 36 is arranged at the upper end of the air flotation tank 29, the oil discharge groove 37 is arranged at one side of the upper end of the air flotation tank 29, and the water discharge pipe 38 is arranged at one side of the lower end of the air flotation tank 29.

The air-float type oil-water separator 1 pumps the filtrate from the water storage tank into the pressure dissolved air tank 28 through the water pump 23, and the pressure filtrate in the pressure dissolved air tank 28 is fully contacted with the air through the air compressor 27 to promote the dissolution of the air; the dissolved air is released as micro bubbles by the dissolved air releaser 30, and the water containing dissolved air is decompressed. In the air flotation tank 29, a capacitance liquid level device 35 automatically detects whether the liquid level height meets the effective separation height, and a thermal resistor 33 and a heating pipe 34 maintain the temperature within a certain range. The oil particles in the press filtrate adhere to the gas bubbles and coalesce at the liquid surface. The oil wiper 36 automatically controls oil wiping at regular time, when water inflow is stable for a period of time, the oil wiper 36 starts to operate, oil stains on the surface are automatically wiped off, and the oil stains enter a waste oil collecting tank to wait for collection; the water is discharged in two parts, one part is discharged from the water discharge pipe 38, and the other part is introduced into the pressure dissolved air tank 28 through the return water pipe 25 and the water pump 23.

In order to solve the problem of granularity control required by feeding and composting of larvae, a proper crusher 7 is selected to be connected into a system to receive the sorted kitchen waste conveyed by the conveyer belt 5 and crush the kitchen waste; the broken material gets into feeder hopper 20, sets up moisture sensor and pressure sensor 17 in the feeder hopper 20, and on-line monitoring material moisture content and total weight of material are with survey data access PLC control system 9 to according to material kind, total material amount and the requirement of later stage biological treatment moisture content, CN value, calculate the auxiliary material addition.

The auxiliary materials in the auxiliary material bin 11 comprise chaff, sawdust, crushed straw and the like, are firstly mixed uniformly according to a certain proportion, the water content and the C/N value are preset, the auxiliary material bin 11 is filled, and the PLC control system 9 is used for controlling the constant feeder 12 to realize automatic metering and adding. The proper quantitative feeder 12 is selected to be connected into a system, is mechanical equipment for continuously weighing, metering and quantitatively conveying solid bulk materials (such as blocks, particles and powder), is widely applied to the industries of cement, mines, building materials, grains, chemical engineering and the like, has advanced, stable and reliable technology, high cost performance and durability, and is an integrated system integrating conveying, weighing and metering and quantitative control. The constant feeder 12 is provided with a reliable variable frequency speed regulation technology, and runs at a wide belt, a thick material layer and a low speed, so that the metering precision is stable in operation and close to static. The dynamic metering precision is better than 1.0%; the static metering precision is better than 0.5 percent. The constant feeder 12 has high automatic quantitative adjustment precision and wide adjustment range (the speed adjustment ratio is more than or equal to 20:1, and the belt speed is 5 cm/min-15 m/min). The linear speed regulation device still has good linear speed regulation performance at low speed, can greatly reduce the abrasion of the belt and avoid the damage of blocking of large materials.

The main material is crushed and automatically mixed with the added auxiliary material, and then is conveyed to a material outlet 14 through a screw propeller 15, so that the material preparation is completed. And integrating the filtrate separation and filtrate oil-water separation system, the feed crushing system and the automatic feeding system into a kitchen waste biological treatment and material preparation integrated system.

The technical scheme also comprises a PLC control system 9, an upper computer 6 and a frequency converter 10, wherein the PLC control system 9 is respectively connected with the moisture sensor 19, the pressure sensor 17, the upper computer 6 and the frequency converter 10, and the frequency converter 10 is connected with the quantitative feeder 12. The PLC control system 9 is also connected with an audible and visual alarm 8. And a material sensor 13 is arranged on one side of the material inlet 16. Thus, automatic induction control, alarm and the like can be realized.

The conveyor belt 5 includes a horizontal portion provided in the raw material bin 4 and an inclined portion provided at a right end of the horizontal portion. Thus facilitating the filter residue to be conveyed into the crusher 7 for crushing.

The lower end of the feed hopper 20 is an inclined plane, and the electric valve 18 is arranged at the lower end of the inclined plane. Thus facilitating the discharge of the broken filter residue.

To sum up, the utility model discloses a filtrating separation and filtrating oil-water separation system, the broken system of feeding and automatic feed system handle kitchen garbage, can process kitchen garbage into heisui river horsefly's foodstuff, and the biology of at last through heisui river horsefly changes into high-quality insect protein and worm excrement fertilizer to it can obtain fine processing to be kitchen garbage.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A kitchen waste biological treatment material preparation system is characterized by comprising a filtrate separation and filtrate oil-water separation system, a feed crushing system and an automatic feeding system;

2. The kitchen waste biological treatment material preparation system according to claim 1, further comprising a PLC control system, an upper computer and a frequency converter, wherein the PLC control system is respectively connected with the moisture sensor, the pressure sensor, the upper computer and the frequency converter, and the frequency converter is connected with the constant feeder.

3. The kitchen waste biological treatment material preparation system according to claim 2, wherein the PLC control system is further connected with an audible and visual alarm.

4. The kitchen waste biological treatment preparation system according to claim 2, wherein a material sensor is arranged on one side of the material inlet.

5. The kitchen waste biological treatment preparation system according to claim 1, wherein the conveyor belt comprises a horizontal portion disposed in the raw material bin and an inclined portion disposed at a right end of the horizontal portion.

6. The kitchen waste biological treatment material preparation system as recited in claim 1, wherein the lower end of the feed hopper is an inclined surface, and the electric valve is arranged at the lower end of the inclined surface.