Synergistic aerobic composting device for livestock and poultry breeding wastewater and excrement

Abstract

The utility model discloses a livestock and poultry breeding wastewater and excrement synergistic aerobic composting device which comprises an aerobic fermentation tank, a humidification pipe is arranged in a tank body of the fermentation tank, a distribution pipe of the humidification pipe is connected with the tank body through a pipe support, one end of the distribution pipe is connected with a header, the other end of the distribution pipe is connected with a pipe seal, and a plurality of nozzles are connected to the distribution pipe. The header extends out of the tank body and then is connected with a water supply pipeline which is connected with a water outlet of a water pump, and a water inlet of the water pump is connected with a water inlet pipeline. The water supply pipeline comprises a heating pipeline and a heat preservation pipeline, a heating pipe is arranged in the heating pipeline, a heat preservation layer wraps the heat preservation pipeline, and an electric valve is installed on the heat preservation pipeline. Aerobic fermentation composting is carried out by comprehensively utilizing breeding wastewater and excrement resources, organic waste is reduced and harmlessness is achieved, meanwhile, the wastewater treatment load is reduced, and water can be added in composting so that the proper water content of a compost body can be guaranteed, and composting can be carried out smoothly.

Description

TECHNICAL FIELD

[0001] The utility model relates to livestock and poultry manure resource utilization technical field, concretely relates to a livestock and poultry breeding wastewater and excrement cooperates aerobic composting device. BACKGROUND

[0002] Livestock and poultry manure includes livestock and poultry breeding wastewater and solid livestock and poultry excrement, wherein breeding wastewater contains high concentration of nitrogen, phosphorus and organic nutrient substance, and livestock and poultry excrement also contains a large amount of organic matter and rich nitrogen, phosphorus, potassium and other nutrient substances. Livestock reduces the total amount of pollutant discharge through fertilizerization, energy and feed, and so on, and makes livestock and poultry breeding industry waste reduction. For example, livestock and poultry excrement is treated by using high-temperature aerobic composting technology, through raw material regulation, microbial fermentation and decomposition degree detection, finally high-quality compost product is obtained, and the goal of waste reduction, harmlessness and resource utilization is realized.

[0003] The aerobic composting is the process of using microorganisms to degrade organic matter in the heap, livestock and poultry excrement and filler are mixed in a certain proportion, carbon-nitrogen ratio, moisture and pH are adjusted, so that microorganisms can rapidly reproduce and degrade organic matter, and the temperature of material is increased to 60 DEG C to 65 DEG C and lasts for 5 to 7 days, and high-temperature composting can kill pathogenic microorganisms, parasitic worm eggs and spores in livestock and poultry excrement, so that livestock and poultry excrement is harmless. In aerobic composting, microorganisms convert carbohydrates into inorganic salts by using organic matter in the heap through their own life activities, and suitable carbon-nitrogen ratio is beneficial to the smooth progress of the heap reaction, and the inhibition reaction will be generated to the heap when the carbon-nitrogen ratio is out of adjustment. The basic material of the heap is solid excrement and auxiliary material, and breeding wastewater is introduced into the basic material of the heap for wet mixing, and the proportion of the three is adjusted to ensure the carbon-nitrogen ratio and the water content.

[0004] The aerobic composting is generally divided into three stages, temperature rising period, high temperature period and decomposition stage. When the temperature in the composting fermentation process exceeds 65 DEG C, a large number of microorganisms will be inactivated or even killed, and the composting effect is reduced. Water in the composting mainly participates in the metabolism of microorganisms, but water evaporation will occur with the increase of temperature, and part of heat will be taken away with water evaporation, so as to adjust the temperature of the heap. The demand of microorganisms for water and the loss of water at high temperature make it necessary to have enough water in the composting to maintain dynamic balance, but when the initial water content of the heap is too high, the void ratio of the heap material is reduced, which hinders ventilation and leads to anaerobic environment. Therefore, adding water to the tank during the high temperature period in the composting process is an important way to meet the water demand of the heap in the high temperature period. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose at providing a kind of livestock and poultry breeding wastewater and excrement synergic aerobic composting device, can utilize breeding wastewater and excrement resources to carry out aerobic fermentation composting comprehensively, reduce wastewater treatment load, reduce and harmless organic waste, can realize moisture addition in composting to guarantee that composting is smoothly carried out with the appropriate moisture content of pile body.

[0006] To achieve the above object, the technical scheme of the present application is as follows: a livestock and poultry breeding wastewater and excrement synergic aerobic composting device, comprising an aerobic fermentation tank, a humidification pipe is arranged in the tank body of the fermentation tank, the distribution pipe of the humidification pipe is connected with the tank body through a pipe support, one end of the distribution pipe is connected with a collector pipe, the other end of the distribution pipe is connected with a pipe seal, a plurality of nozzles are connected to the distribution pipe, the collector pipe extends to the outside of the tank body and is then connected with a water delivery pipeline, the water delivery pipeline is connected with the water outlet of a water pump, and the water inlet of the water pump is connected with a water inlet pipeline.

[0007] The water delivery pipeline comprises a heating pipeline and a heat preservation pipeline, a heating pipe is arranged in the heating pipeline, the heat preservation pipeline is wrapped with a heat preservation layer, and an electric valve is installed on the heat preservation pipeline.

[0008] The water inlet pipeline is connected with a water tank, a drainage pipe is connected to the heating pipeline, and the lower end of the drainage pipe is connected with a liquid collector.

[0009] The distribution pipe and the collector pipe are connected perpendicularly through a bent joint, and the plurality of nozzles are screw-connected to the distribution pipe.

[0010] A stirring shaft and three-layer stirrers installed on the stirring shaft are arranged in the tank body, the upper stirrer and the middle stirrer of the three-layer stirrers are axial flow type stirrers, the lower stirrer is a radial flow type stirrer, and a stirring motor connected with the stirring shaft is installed at the upper part of the tank body.

[0011] An air inlet pipe and an air distributor are arranged in the tank body, the air distributor is located below the lower stirrer, one end of the air inlet pipe extends to the outside of the tank body, and the other end of the air inlet pipe is connected with the air distributor.

[0012] A heat exchange jacket is arranged outside the tank body, and a medium inlet and a medium outlet are arranged on the jacket.

[0013] Compared with the prior art, the livestock and poultry breeding wastewater and excrement synergic aerobic composting device has the following beneficial effects:

[0014] The livestock and poultry breeding wastewater and excrement synergic aerobic composting device adjusts the initial moisture content and the carbon-nitrogen ratio of the composting raw materials by adjusting livestock and poultry breeding wastewater, realizes the resource utilization of part of the wastewater, ferments the livestock and poultry excrement by a microbial method to obtain a harmless composting product, comprehensively utilizes the breeding wastewater and excrement resources to reduce the wastewater treatment load, and helps to reduce organic waste.

[0015] The utility model discloses a livestock and poultry breeding wastewater and excrement synergic aerobic composting device, tank body is equipped with humidification pipe, tank body is equipped with water pump and water supply pipeline outside, is used for carrying out moisture supplement to the heap in the tank. The distribution pipe in the tank is near circular, and the nozzle is connected on the distribution pipe, compared with directly spraying water from the water inlet of the tank body, the utility model has higher water mist distribution uniformity, can meet the demand of microbial metabolism to moisture, can also supplement the loss of high-temperature moisture evaporation, makes the moisture content of the heap in the suitable range, guarantees the smooth progress of composting process, and further guarantees the quality and stability of the final product.

[0016] The utility model discloses a livestock and poultry breeding wastewater and excrement synergic aerobic composting device, water supply pipeline sets up heating pipeline and heat preservation pipeline, and the water that passes through heating pipeline is warmed through heating pipe, and the water in heat preservation pipeline is kept warm, compared with directly spraying water from the water inlet of the tank body, the utility model uses warm water mist to carry out moisture supplement to the heap, avoids the surface temperature of the heap sudden drop and leads to the crack of the internal structure change of the heap even the stratification, also can avoid the local impact of water flow to the heap and leads to the local porosity reduction of the heap, too high humidity, thereby avoiding the adverse effect of organic matter degradation caused by poor ventilation, limiting oxygen permeation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the front view of the aerobic composting device of this embodiment.

[0018] Figure 2 It is the top view of the aerobic composting device of this embodiment

[0019] Figure 3 It is Figure 1 It is the schematic diagram of the part structure of the fermentation tank.

[0020] Figure 4 It is the right view of the fermentation tank of the aerobic composting device of this embodiment.

[0021] Figure 5 It is the structural schematic diagram of humidification pipe in the aerobic composting device of this embodiment.

[0022] Fig. 1. tank, 2. water supply pipeline, 3. heating pipeline, 4. heat preservation pipeline, 5. electric valve, 6. water inlet pipeline, 7. water pump, 8. water tank, 9. liquid discharge pipe, 10. liquid collecting tank, 11. stirring motor, 12. medium outlet, 13. manifold, 14. air inlet pipe, 15. jacket, 16. manhole, 17. heating pipe, 18. medium inlet, 19. distribution pipe, 20. pipe support, 21. nozzle, 22. stirring shaft, 23. upper layer stirrer, 24. middle layer stirrer, 25. lower layer stirrer, 26. air distributor, 27. discharge port, 28. exhaust port, 29. pipe seal. DETAILED DESCRIPTION

[0023] The utility model is further described below in combination with embodiments. These embodiments are only used to illustrate the utility model and not used to limit the scope of the utility model. Any non-essential changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the scope of the utility model claimed for protection.

[0024] The livestock and poultry manure generated in livestock and poultry scale farming mainly consists of livestock and poultry urine, feces, shed flushing water, feed residues and the like. Due to the solid-liquid mixing, the livestock and poultry manure needs to be treated after being separated into solid and liquid for resource utilization. The organic matter and ammonia nitrogen content in the separated livestock and poultry breeding wastewater is high, and the biodegradability is good. The organic solid waste mainly composed of feces after separation is fermented by microorganisms to promote material curing and water reduction, and the heat generated can kill harmful substances, and the compost product is obtained after the cured material is crushed, screened and packaged. For small and medium-sized farms, the organic solid waste can be treated on site by using the aerobic fermentation equipment, and the fermentation period is short and the land occupation area is small. The fermentation equipment must have the function of improving and promoting microbial metabolism, and stirring, mixing, aeration, assisting ventilation and other operations are operated in the fermentation process to control the temperature and moisture content of the pile in the equipment to ensure smooth composting. When preparing the compost raw material, the wastewater after solid-liquid separation can be directly used to adjust the initial moisture content and carbon-nitrogen ratio of the compost raw material to realize the resource utilization of part of the wastewater. Since the moisture content of the pile is reduced during the high-temperature stage of the pile, the present embodiment provides a livestock and poultry breeding wastewater and feces cooperative aerobic composting device, which comprises a function of supplementing water to the pile in the fermentation equipment.

[0025] As shown in Figure 1 and Figure 2 , the aerobic composting device of the present embodiment comprises an aerobic fermentation tank. The fermentation tank is a cylindrical structure, the outer surface is frosted, and the inner surface is mirror polished. A humidifying pipe is arranged in the tank body 1 of the fermentation tank. One end of the humidifying pipe extends out of the tank body 1 and is connected to a water supply pipeline 2. The water supply pipeline 2 is connected to the water outlet of a water pump 7. The water inlet of the water pump 7 is connected to a water inlet pipeline 6. The water inlet pipeline 6 is connected to a water tank 8. The wastewater after purification treatment can be used to supplement the water tank 8 after reaching the standard.

[0026] As shown in Figure 3As shown, the water supply pipeline 2 includes a heating pipe 3 and a heat preservation pipe 4, the heating pipe 3 is provided with a heating pipe 17, and the heat preservation pipe 4 is wrapped with a heat preservation layer. The heating pipe 3 is connected with a liquid discharge pipe 9, and the lower end of the liquid discharge pipe 9 is connected with a liquid collecting tank 10. The liquid discharge pipe 9 can discharge the accumulated water in the heating pipe 3, so as to ensure the normal operation of the pipeline. When the pile is replenished with water, in order to reduce the temperature difference between the newly entered water mist and the tank, avoid the surface temperature of the pile from suddenly dropping, reduce the influence on the activity of aerobic microorganisms, and avoid cracks or even stratification due to the change of the internal structure of the pile caused by the large temperature difference, the heating pipe 17 is used to heat the liquid in the water supply pipeline 2, and the heat preservation layer is used to heat the heat preservation pipe 4, so as to ensure that the temperature difference between the water mist entering the tank 1 and the temperature in the tank 1 is small. An electric valve 5 is installed on the heat preservation pipe 4, the electric valve 5 is opened when water is added to the tank 1, and the water supply pipeline 2 outside the tank 1 is communicated with the humidifying pipe in the tank 1. After the water is added, the electric valve 5 is closed, and the fermentation tank becomes a closed space.

[0027] As shown in Figure 4 The upper part of the tank 1 of the fermentation tank of the embodiment is provided with a double-speed stirring motor 11, the double-speed stirring motor 11 is connected with a stirring shaft 22, and the connection between the stirring shaft 22 and the tank 1 is sealed. In order to ensure the stirring effect of the pile, three layers of stirrers are arranged on the stirring shaft 22 in the tank 1. The lower stirrer 25 of the three layers of stirrers is a radial flow type stirrer, which is used to control the dispersion of gas and improve the oxygen transmission characteristics. The upper stirrer 23 and the middle stirrer 24 are axial flow type stirrers, which are used to stir and make the material mixed with gas periodically. The combination of different types of stirrers on the same stirring shaft 22 can achieve good mixing effect and reduce power consumption. An air inlet pipe 14 and an air distributor 26 are arranged in the tank 1, the air distributor 26 is located below the lower stirrer 25, one end of the air inlet pipe 14 extends to the outside of the tank 1 and is connected with an air inlet pipeline and a blower. The other end of the air inlet pipe 14 is connected with the air distributor 26. The embodiment adopts an intermittent ventilation mode during composting, an exhaust port 28 is arranged on the tank 1, sufficient oxygen content is provided for the microorganisms in the tank 1 during the temperature rising stage, and excess moisture is removed through ventilation. During the high temperature stage, the ventilation is matched with the stirring of the material to reduce the temperature of the pile. A large amount of water is consumed during this stage, and water needs to be added to the pile to increase the moisture content. A heat exchange jacket 15 is arranged outside the tank 1, a medium inlet 18 and a medium outlet 12 are arranged on the jacket 15, hot medium is introduced into the tank 1 from the medium inlet 18 during the initial composting, the hot medium is collected after being cooled from the medium outlet 12, is heated by a water circulation heater, and then is introduced into the medium inlet 18, so as to complete the circulation heating action, and the medium temperature is adjusted to adapt to the temperature of the pile in different composting periods. The fermentation tank of the embodiment is also provided with a manhole 16 and a discharge port 27, the manhole 16 is used for feeding and maintenance, and the discharge port 27 is used for discharging the composting products.

[0028] As shown in Figure 4 and Figure 5As shown, the distribution pipe 19 of the humidifying pipe in the embodiment is connected with the tank body 1 through the pipe support 20, one end of the distribution pipe 19 is connected with the collecting pipe 13, the other end of the distribution pipe 19 is connected with the pipe seal 29, a plurality of nozzles 21 are connected on the distribution pipe 19, the collecting pipe 13 is extended to the outside of the tank body 1 and then connected with the water delivery pipeline 2, the distribution pipe 19 is connected with the collecting pipe 13 perpendicularly through a bent joint, and the plurality of nozzles 21 are screwed with the distribution pipe 19. In the embodiment, the distribution pipe 19 is nearly circular, and a plurality of nozzles 21 are arranged on the distribution pipe 19 to ensure that sufficient and uniform water mist is generated. In the second half of the composting process, with the increase of the temperature of the composting body and the factors such as stirring and ventilation, the water content of the composting body is continuously reduced. In order to ensure that the water content is within the appropriate range, the water pump 7 pumps the water in the water tank 8 into the water delivery pipeline 2, the water is heated by the heating pipe 17 when flowing through the heating pipeline 3, and then enters the distribution pipe 19 through the heat preservation pipeline 4 and the collecting pipe 13. The water mist sprayed through the plurality of nozzles 21 has high and uniform distribution efficiency, so that the water consumed by the microbial metabolic process and the water evaporated at high temperature can be replenished in time, and a relatively balanced state is achieved.

[0029] The livestock and poultry breeding wastewater and excrement synergistic aerobic composting device provided in the embodiment is used to mix and aerobically compost the livestock and poultry breeding wastewater and excrement, comprehensively utilize the livestock and poultry breeding excrement and pollution to convert carbon and nitrogen and fix and maintain organic nutrient elements, can not only harmlessly treat the waste of the livestock and poultry breeding industry and reduce the breeding excrement and water treatment load, but also can increase economic benefits and social and ecological benefits through recycling of the manure.

Claims

1. An aerobic composting device for livestock and poultry breeding wastewater and manure, comprising an aerobic fermentation tank, characterized in that: The humidifying pipe is arranged in the tank body of the fermenter, the distribution pipe of the humidifying pipe is connected with the tank body through a pipe support, one end of the distribution pipe is connected with a header, the other end of the distribution pipe is connected with a pipe seal, a plurality of nozzles are connected on the distribution pipe, the header extends to the outside of the tank body and is then connected with a water feeding pipeline, the water feeding pipeline is connected with the water outlet of a water pump, and the water inlet of the water pump is connected with a water inlet pipeline.

2. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to claim 1, characterized in that: The water feeding pipeline comprises a heating pipeline and a heat preservation pipeline, the heating pipeline is provided with a heating pipe, the heat preservation pipeline is wrapped with a heat preservation layer, and an electric valve is installed on the heat preservation pipeline.

3. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to claim 2, characterized in that: The water inlet pipeline is connected with a water tank, a liquid discharge pipe is connected on the heating pipeline, and the lower end of the liquid discharge pipe is connected with a liquid collecting tank.

4. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to any one of claims 1 to 3, characterized in that: The distribution pipe and the header are connected through a bent joint, and the plurality of nozzles are screwed with the distribution pipe.

5. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to claim 1, characterized in that: A stirring shaft and three-layer stirrers installed on the stirring shaft are arranged in the tank body, the upper stirrer and the middle stirrer of the three-layer stirrers are axial flow type stirrers, the lower stirrer is a radial flow type stirrer, and a stirring motor connected with the stirring shaft is installed on the upper part of the tank body.

6. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to claim 5, characterized in that: An air inlet pipe and an air distributor are arranged in the tank body, the air distributor is located below the lower stirrer, one end of the air inlet pipe extends to the outside of the tank body, and the other end of the air inlet pipe is connected with the air distributor.

7. The livestock and poultry breeding wastewater and manure synergic aerobic composting device according to claim 1, characterized in that: A heat exchange jacket is arranged outside the tank body, and a medium inlet and a medium outlet are arranged on the jacket.

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