Efficient duck manure resource utilization system

Abstract

The utility model provides an efficient duck manure resource utilization system, and relates to the technical field of livestock and poultry environmental protection. According to the system, firstly, duck manure is subjected to solid-liquid separation twice, filtrate obtained after separation is subjected to anaerobic fermentation through the black film anaerobic tank, suspended solids and jelly are removed through the air flotation machine, then the filtrate sequentially enters the efficient anaerobic reactor, the micro-aeration tank and the liquid storage tank to be subjected to a series of process treatment, and after the filtrate enters the liquid storage tank to be naturally purified and stored, the filtrate can be returned to the field for irrigation; after being dried by a biogas drying system, manure residues after solid-liquid separation enter an aerobic composting system to be processed into organic manure, and then the organic manure is returned to the field for utilization; a large amount of biogas is generated by two times of anaerobic fermentation, and is stored and utilized after being purified, so that'gas-electricity-heat-fertilizer 'multi-energy complementary co-production is achieved, and organic internal circulation is realized. Through efficient treatment of duck manure, efficient recycling, energy utilization and agriculture and animal husbandry planting and breeding circulation are achieved, and healthy and sustainable development of the breeding industry is promoted.

Description

Technical Field

[0001] The utility model provides a duck manure efficient resource utilization system, which relates to the technical field of livestock and poultry environmental protection. Background Art

[0002] The most obvious difference between duck manure and other livestock and poultry manure is its high viscosity and high water content, which is generally above 90%. This makes duck manure difficult to treat, requires large investment in facilities and equipment, and has high operating costs, all of which seriously restrict the healthy and sustainable development of the duck farming industry. At present, the domestic treatment of duck manure has long adopted a relatively single process route, which has been unable to systematically treat and utilize duck manure, resulting in serious duck farm manure pollution and waste of resources. Therefore, duck manure treatment urgently needs a scientific, reasonable, economical, simple to operate and maintain, low-cost, green, low-carbon and sustainable resource utilization system. Utility Model Content

[0003] The purpose of the utility model is to provide a duck manure efficient resource utilization system to address the deficiencies in the above-mentioned technology. The utility model fully processes duck manure to achieve efficient resource and energy utilization of duck manure.

[0004] The utility model is realized through the following technical scheme: a duck manure efficient resource utilization system, which includes a sewage collection tank, a primary solid-liquid separator, an intermediate tank, a secondary solid-liquid separator, a black film anaerobic tank, an anaerobic discharging tank, an air flotation machine, an air flotation discharging tank, a high-efficiency anaerobic reactor, a micro-aeration tank, a liquid storage tank, an aerobic composting system, a biogas purification and storage system, a biogas power generation system, a biogas drying system and a biogas boiler system.

[0005] Preferably, the sewage collection tank is connected with the primary solid-liquid separator, and is roughly separated by the primary solid-liquid separator to obtain a liquid as a primary filtrate; the primary filtrate enters the intermediate tank, and the intermediate tank is connected with the secondary solid-liquid separator, and the primary filtrate enters the secondary solid-liquid separator, and is finely separated by the secondary solid-liquid separator to obtain a liquid as a secondary filtrate; the establishment of two solid-liquid separators can maximize the solid-liquid separation of duck manure and reduce the solid content of the filtrate, which is beneficial to improving the anaerobic fermentation treatment efficiency of the subsequent filtrate. The secondary filtrate enters the black film anaerobic tank, and after anaerobic fermentation in the black film anaerobic tank, enters the anaerobic discharge tank, the anaerobic discharge tank is connected to the flotation machine, the flotation machine is connected to the flotation discharge tank, the flotation discharge tank is connected to the high-efficiency anaerobic reactor, and after further anaerobic fermentation in the high-efficiency anaerobic reactor (the filtrate is degraded into biogas slurry after anaerobic fermentation), the biogas slurry enters the micro-aeration tank, which is equipped with a micro-aeration system. After aerobic treatment in the micro-aeration tank, it enters the liquid storage tank for natural purification and storage, and can be returned to the field for irrigation.

[0006] Preferably, after the primary solid-liquid separator performs rough separation, the solid obtained is primary manure residue; after the secondary solid-liquid separator performs fine separation, the solid obtained is secondary manure residue; the establishment of two solid-liquid separators can maximize the recovery of solid matter in duck manure, thereby increasing the yield of compost and organic manure. The black film anaerobic tank produces a small amount of biogas residue after anaerobic fermentation; a small amount of scum is produced after treatment by the flotation machine; the biogas residue and the scum are returned to the intermediate tank and re-enter the secondary solid-liquid separator for solid-liquid separation; the primary manure residue and the secondary manure residue are transported to the biogas drying system to adjust the moisture content, that is, to obtain compost raw materials, and the compost raw materials are transported to the aerobic composting system. After aerobic fermentation and decomposition, they can be processed to produce organic manure for return to the field.

[0007] Preferably, the secondary filtrate produces a large amount of biogas after anaerobic fermentation in the black film anaerobic tank, and then is transported to the biogas purification and storage system through a pipeline; a large amount of biogas is also produced after further anaerobic fermentation in the high-efficiency anaerobic reactor, and the biogas is transported to the biogas purification and storage system through a pipeline; the biogas is purified by the biogas purification and storage system and stored for stand-by use, and the biogas is used to provide fuel for the biogas power generation system, the biogas drying system, and the biogas boiler system, so that the biogas power generation system generates electricity for the plant's own use, the biogas drying system dries the biogas residue and organic fertilizer particles, and the biogas boiler system heats the high-efficiency anaerobic reactor and heats the plant, that is, achieving the "gas-electricity-heat-fertilizer" multi-energy complementary cogeneration.

[0008] The beneficial effects of the utility model are:

[0009] 1. The utility model discloses a duck manure efficient resource utilization system, which adopts two solid-liquid separations to maximize the solid-liquid separation of duck manure, reduce the solid content of the filtrate, and is conducive to improving the processing efficiency of subsequent processes, thereby reducing the processing cost. At the same time, it can also maximize the recovery of solid matter in duck manure, increase the output of compost and organic manure, and increase nutrients such as organic matter;

[0010] 2. A high-efficiency anaerobic reactor is set up after the black film anaerobic tank. The principle of graded anaerobic fermentation is adopted. According to the characteristics of different organic components in the filtrate, the treatment is carried out in stages to maintain the most stable and most suitable anaerobic conditions, promote the activity and efficiency of specific microorganisms, and not only improve the degradation efficiency of organic matter, but also greatly improve the gas production and quality;

[0011] 3. After being purified by the biogas purification and storage system, it is stored as biogas fuel, and the biogas power generation system generates electricity for the factory's own use, the biogas drying system dries the biogas residue and organic fertilizer particles, and the biogas boiler system heats the high-efficiency anaerobic reactor and heats the factory, thereby achieving the "gas-electricity-heat-fertilizer" multi-energy complementary cogeneration, thereby realizing the purpose of efficient energy utilization of duck manure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic structural diagram of the utility model. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0015] like Figure 1 As shown, in this embodiment, a duck manure efficient resource utilization system is provided, which includes a sewage collection tank, a primary solid-liquid separator, an intermediate tank, a secondary solid-liquid separator, a black film anaerobic tank, an anaerobic discharge tank, an air flotation machine, an air flotation discharge tank, a high-efficiency anaerobic reactor, a micro-aeration tank, a liquid storage tank, an aerobic composting system, a biogas purification and storage system, a biogas power generation system, a biogas drying system and a biogas boiler system.

[0016] The sewage collecting tank is connected with the primary solid-liquid separator, and the primary solid-liquid separator performs rough separation to obtain a liquid as the primary filtrate; the primary filtrate enters the intermediate tank, which is connected with the secondary solid-liquid separator, and the primary filtrate enters the secondary solid-liquid separator, and is finely separated by the secondary solid-liquid separator to obtain a liquid as the secondary filtrate; the secondary filtrate enters the black film anaerobic tank, and after anaerobic fermentation in the black film anaerobic tank, enters the anaerobic discharge tank, and the anaerobic discharge tank is connected to the air flotation machine, which is connected with the air flotation discharge tank, and the air flotation discharge tank is connected with the high-efficiency anaerobic reactor. After further anaerobic fermentation in the high-efficiency anaerobic reactor (the filtrate is degraded into biogas slurry after anaerobic fermentation), the biogas slurry enters the micro-aeration tank, which is provided with a micro-aeration system, and after aerobic treatment in the micro-aeration tank, enters the liquid storage tank for natural purification and storage, and can be returned to the field for irrigation.

[0017] After the coarse separation by the primary solid-liquid separator, the solid obtained is primary manure residue; after the fine separation by the secondary solid-liquid separator, the solid obtained is secondary manure residue; a small amount of biogas residue is produced after anaerobic fermentation in the black film anaerobic tank; a small amount of scum is produced after treatment by the flotation machine; the biogas residue and the scum are returned to the intermediate tank and re-enter the secondary solid-liquid separator for solid-liquid separation; the primary manure residue and the secondary manure residue are transported to the biogas drying system to adjust the moisture content, that is, to obtain compost raw materials, and the compost raw materials are transported to the aerobic composting system, and after aerobic fermentation and decomposition, they can be processed to produce organic manure for return to the field.

[0018] After the secondary filtrate is anaerobic fermented in the black film anaerobic tank, a large amount of biogas is produced, which is then transported to the biogas purification and storage system through a pipeline; after further anaerobic fermentation in the high-efficiency anaerobic reactor, a large amount of biogas is also produced, and the biogas is transported to the biogas purification and storage system through a pipeline; after being purified in the biogas purification and storage system, it is stored for standby use, and the biogas is used to provide fuel for the biogas power generation system, the biogas drying system, and the biogas boiler system, so that the biogas power generation system generates electricity for the plant's own use, the biogas drying system dries the biogas residue and organic fertilizer particles, and the biogas boiler system heats the high-efficiency anaerobic reactor and the plant.

[0019] The technical solution of the present utility model is not limited to the above-mentioned specific embodiments, and all technical variations made according to the technical solution of the present utility model fall within the protection scope of the present utility model.

Claims

1. A duck manure efficient resource utilization system, characterized by: It includes a sewage collection tank, a primary solid-liquid separator, an intermediate tank, a secondary solid-liquid separator, a black film anaerobic tank, an anaerobic discharge tank, an air flotation machine, an air flotation discharge tank, a high-efficiency anaerobic reactor, a micro-aeration tank, a liquid storage tank, an aerobic composting system, a biogas purification and storage system, a biogas power generation system, a biogas drying system and a biogas boiler system; The sewage collecting tank is connected with the primary solid-liquid separator, and the primary solid-liquid separator performs rough separation to obtain a liquid as a primary filtrate. The primary filtrate enters the intermediate tank, and the intermediate tank is connected with the secondary solid-liquid separator. The primary filtrate enters the secondary solid-liquid separator, and is finely separated by the secondary solid-liquid separator to obtain a liquid as a secondary filtrate. The secondary filtrate enters the black film anaerobic tank, and after anaerobic fermentation in the black film anaerobic tank, enters the anaerobic discharge tank, and the anaerobic discharge tank is connected to the air flotation machine, and the air flotation machine is connected with the air flotation discharge tank, and the air flotation discharge tank is connected with the high-efficiency anaerobic reactor. After further anaerobic fermentation in the high-efficiency anaerobic reactor, the biogas slurry enters the micro aeration tank, and a micro aeration system is arranged in the micro aeration tank. After aerobic treatment in the micro aeration tank, the biogas slurry enters the liquid storage tank for natural purification and storage, and can be returned to the field for irrigation.

2. The duck manure efficient resource utilization system according to claim 1, characterized in that: After the coarse separation by the primary solid-liquid separator, the solid obtained is primary manure residue; after the fine separation by the secondary solid-liquid separator, the solid obtained is secondary manure residue; a small amount of biogas residue is produced after anaerobic fermentation in the black film anaerobic tank; a small amount of scum is produced after treatment by the flotation machine; the biogas residue and the scum are returned to the intermediate tank and re-enter the secondary solid-liquid separator for solid-liquid separation; the primary manure residue and the secondary manure residue are transported to the biogas drying system to adjust the moisture content, that is, compost raw materials are obtained, and the compost raw materials are transported to the aerobic composting system. After aerobic fermentation and decomposition, they can be processed into organic manure for return to the field.

3. The duck manure efficient resource utilization system according to claim 1 is characterized by: After the secondary filtrate is anaerobic fermented in the black film anaerobic tank, a large amount of biogas is produced, which is then transported to the biogas purification and storage system through a pipeline; after further anaerobic fermentation in the high-efficiency anaerobic reactor, a large amount of biogas is also produced, and the biogas is transported to the biogas purification and storage system through a pipeline; after being purified in the biogas purification and storage system, it is stored for standby use, and the biogas is used to provide fuel for the biogas power generation system, the biogas drying system, and the biogas boiler system, so that the biogas power generation system generates electricity for the plant's own use, the biogas drying system dries the biogas residue and organic fertilizer particles, and the biogas boiler system heats the high-efficiency anaerobic reactor and the plant.

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