Livestock and poultry breeding wastewater purification system

Abstract

The utility model relates to a livestock and poultry breeding wastewater purification system. The purification system comprises a storage tank, a primary treatment device and an advanced treatment device. The storage tank is used for storing livestock and poultry breeding wastewater and provided with a wastewater inlet pipe, a wastewater outlet pipe and a water return pipe. The primary treatment device comprises a device frame, an organic matter groove is formed in the device frame, the organic matter groove is filled with organic matter, and green plants are planted on the organic matter; a first water pump is arranged on the wastewater outlet pipe to convey wastewater to one end of the organic matter tank, and a water outlet pipe is arranged at the other end of the organic matter tank. The deep treatment device comprises a fish pond in which fish is cultivated, and aquatic plants are transplanted in the fish pond; water in the fishpond flows back to the storage tank through a water return pipe, and a water return pump is arranged on the water return pipe. An aquatic plant-microorganism-fish symbiotic ecological system is established, and multiple purposes of sewage treatment, resource utilization and the like are achieved by harvesting plant biomass and fish biomass. The method is low in cost and is more ecological and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater purification, in particular to a livestock and poultry breeding wastewater purification system. Background Art

[0002] Livestock and poultry farming wastewater refers to wastewater discharged from livestock and poultry farming. Livestock farming wastewater includes manure wastewater, industrial wastewater, domestic sewage, and rainwater. The volume of manure wastewater from livestock farms is 18-37 liters per head per day for pigs and 56-256 liters per head per day for large livestock. The suspended solids content in this wastewater is 15-30 g / L for pigs and 30-50 g / L for large livestock. COD is 15-30 g / L for pigs and 35-60 g / L for large livestock. BOD6 is 6.25-12.5 g / L for pigs and 4-6.7 g / L for large livestock. It also contains significant amounts of nitrogen, phosphorus, and potassium. Poultry farming wastewater does not produce manure wastewater, but other aspects of the wastewater are the same as those from livestock farming.

[0003] Existing livestock and poultry wastewater cannot be discharged directly and is mostly sent to fertilizer plants for treatment. At the treatment plant, large suspended solids are filtered to remove the wastewater. The wastewater then passes through a reaction sedimentation tank for precipitation. Anaerobic fermentation is then used to degrade large organic pollutants into small molecules, which are then completely degraded in a contact oxidation tank. However, this treatment method is costly and produces waste gas and other waste during the treatment process, making it environmentally unsuitable. Therefore, a low-cost and environmentally friendly wastewater purification system is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a livestock and poultry breeding wastewater purification system with low treatment cost and environmental protection.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions for a livestock and poultry breeding wastewater purification system: a livestock and poultry breeding wastewater purification system, comprising a storage tank, a primary treatment device and a deep treatment device;

[0006] The storage tank is used to store livestock and poultry breeding wastewater, and is provided with a wastewater inlet pipe, a wastewater outlet pipe and a return pipe;

[0007] The primary treatment device includes a device frame, an organic matter tank is provided on the device frame, the organic matter tank is filled with organic matter, and green plants are planted on the organic matter; a first water pump is provided on the wastewater outlet pipe to send wastewater to one end of the organic matter tank, and a water outlet pipe is provided at the other end of the organic matter tank;

[0008] The deep treatment device includes a fish pond with fish, which is used to collect wastewater discharged from the outlet pipe of the organic matter tank, and aquatic plants are transplanted in the fish pond; the water in the fish pond is returned to the storage tank through a return pipe, and a return pump is provided on the return pipe.

[0009] The organic matter tank is movably arranged on the device frame, and the organic matter tank is fixed on the device frame at an angle, or the organic matter tank can be adjusted along the water flow direction through an adjustment mechanism to adjust the water flow velocity meter residence time of the wastewater in the organic matter.

[0010] The adjustment mechanism includes at least one supporting pad disposed below the upstream end of the organic matter tank.

[0011] The device frame is provided with a baffle which cooperates with the downstream end portion of the organic matter tank to limit and stop.

[0012] The regulating mechanism comprises a hinge portion between the downstream end of the organic tank and a device frame, and the device frame is provided with a driving mechanism for driving the upstream end of the organic tank to rotate along the hinge portion.

[0013] The driving mechanism comprises a driving cylinder, one end of which is hinged to the organic matter tank, and the other end of which is hinged to the device frame.

[0014] The primary treatment device includes two device racks sequentially arranged along the water flow direction, and each device rack is provided with the organic matter tank.

[0015] The beneficial effects of the present invention are as follows: livestock and poultry breeding wastewater will first pass through the organic matter tank, and the organic matter and plant root microorganisms can degrade and prevent small impurities from flowing downward into the fish pond, making the fish pond cleaner. The organic matter (including N and P) in the breeding wastewater is decomposed and converted into inorganic nutrients that can be absorbed by plants by microorganisms in the water, and these nutrients are absorbed by aquatic plants (including algae) to obtain biological mass. Fish protein is obtained by different types of fish feeding on sludge, microorganisms and aquatic plants in the water, and the fish excrement is then decomposed and converted into inorganic nutrients by microorganisms, and the inorganic elements are then absorbed by plants, eventually establishing a symbiotic ecological system of aquatic plants, microorganisms and fish. By harvesting plant biomass and fish biomass, multiple purposes such as sewage treatment and resource utilization are achieved. Compared with the existing technology, such treatment is not only low-cost, but also more environmentally friendly and more in line with current environmental requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a livestock and poultry breeding wastewater purification system according to a first embodiment of the present invention;

[0017] Figure 2 This is a structural diagram of a primary treatment device in a second embodiment of a livestock and poultry breeding wastewater purification system of the present utility model;

[0018] Figure 3 It is a structural schematic diagram of the primary treatment device in Example 3 of a livestock and poultry breeding wastewater purification system of the present utility model. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0020] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0021] The utility model is a livestock and poultry breeding wastewater purification system embodiment 1, such as Figure 1 As shown, it includes a storage tank 1, a primary treatment device, and an advanced treatment device. The storage tank 1 is used to store livestock and poultry breeding wastewater, and is provided with a wastewater inlet pipe 2, a wastewater outlet pipe 3, and a return pipe 4. Livestock and poultry breeding wastewater is fed into the storage tank through the wastewater inlet pipe 2.

[0022] The primary treatment device includes a device frame 10, on which is mounted an organic matter tank 7. The organic matter tank is filled with organic matter 11, and green plants 12 are planted on the organic matter. A first water pump 5 is mounted on the wastewater outlet pipe 3 to deliver wastewater to one end of the organic matter tank 7. An outlet pipe 8 is mounted on the other end of the organic matter tank, and a second water pump 9 is mounted on the outlet pipe. In this embodiment, the primary treatment device is a secondary treatment device, that is, the primary treatment device includes two device frames arranged sequentially along the direction of water flow, each equipped with an organic matter tank. The organic matter tank is divided into an upstream organic matter tank and a downstream organic matter tank. The outlet of the outlet pipe on the upstream organic matter tank is located above the upstream end of the downstream organic matter tank, so that treated wastewater from the upstream organic matter tank is delivered to the downstream organic matter tank. The outlet pipe on the downstream organic matter tank is used to deliver the treated wastewater to a fish pond 15. The organic matter and plant root microorganisms can degrade fine impurities, preventing them from entering the fish pond, thereby making the fish pond cleaner. In other embodiments, the primary treatment device may also be a one-stage treatment device, that is, it only includes a device frame and an organic matter tank.

[0023] The deep treatment device includes a fish pond 15 with fish 17 to receive the wastewater discharged from the outlet pipe on the downstream organic tank. The type of fish can be selected according to demand. Upper-layer fish such as silver carp, bighead carp, black carp, and whitebait can be selected; lower-layer fish such as crucian carp, carp, black carp, and catfish can also be selected. Aquatic plants 18 are transplanted in the fish pond. The aquatic plants can be algae or other aquatic plants. The water in the fish pond is returned to the storage tank 1 through the return pipe 4. The return pipe is provided with a return pump 16 to form an ecological cycle treatment. The organic matter (including N and P) in the aquaculture wastewater is decomposed and converted into inorganic nutrients that can be absorbed by plants by microorganisms in the water. These nutrients are absorbed by aquatic plants (including algae) to obtain biological quality. Fish protein is obtained by different types of fish feeding on sludge, microorganisms and aquatic plants in the water. The fish excrement is then decomposed by microorganisms and converted into inorganic nutrients. The inorganic elements are then absorbed by plants, eventually establishing a symbiotic ecological system of aquatic plants, microorganisms and fish.

[0024] In this embodiment, the organic matter tank is movably mounted on the device frame and is fixed to the device frame at an angle to adjust the flow rate and residence time of the wastewater in the organic matter. In this embodiment, by adjusting the inclination angle of the organic matter tank, the flow rate of the water in the organic matter tank and the residence time of the water in the organic matter tank can be flexibly controlled. Furthermore, by utilizing plant treatment, the oxygen needs of the plant during its growth process can be met without the need for aeration. In this embodiment, the upper side of the device frame 10 is an inclined surface 6, and the organic matter tank can be directly fixed to this inclined surface. To prevent the organic matter tank from sliding, a baffle can be provided on the device frame to cooperate with the downstream end limit stop of the organic matter tank.

[0025] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two components or the interaction between two components. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0027] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

[0028] The second embodiment of the livestock and poultry breeding wastewater purification system of the present utility model is as follows: Figure 2 As shown, the difference from Example 1 lies in the structure of the primary treatment device. In this embodiment, the organic matter tank is adjustable along the water flow direction via an adjustment mechanism. Specifically, the adjustment mechanism includes at least one support block 19 positioned below the upstream end of the organic matter tank. The angle of the organic matter tank is adjusted by the number of stacked support blocks 19. A baffle 20 is provided on the device frame to engage with the downstream end of the organic matter tank.

[0029] The third embodiment of the livestock and poultry breeding wastewater purification system of the present utility model is as follows: Figure 3 As shown, the difference from Example 1 lies in the structure of the primary treatment device. In this embodiment, the adjustment mechanism includes a hinged portion 21 between the downstream end of the organic matter tank and the device frame. The device frame is equipped with a drive mechanism that drives the upstream end of the organic matter tank to rotate along the hinged portion. The drive mechanism includes a drive cylinder 22, which can be a hydraulic cylinder. One end of the drive cylinder is hinged to the organic matter tank and the other end is hinged to the device frame. In other embodiments, the drive mechanism can also be replaced by an electric push rod.

Claims

1. A livestock and poultry breeding wastewater purification system, characterized by: Includes storage tanks, primary treatment units, and advanced treatment units; The storage tank is used to store livestock and poultry breeding wastewater, and is provided with a wastewater inlet pipe, a wastewater outlet pipe and a return pipe; The primary treatment device includes a device frame, an organic matter tank is provided on the device frame, the organic matter tank is filled with organic matter, and green plants are planted on the organic matter; a first water pump is provided on the wastewater outlet pipe to send wastewater to one end of the organic matter tank, and a water outlet pipe is provided at the other end of the organic matter tank; The deep treatment device includes a fish pond with fish, which is used to collect wastewater discharged from the outlet pipe of the organic matter tank, and aquatic plants are transplanted in the fish pond; the water in the fish pond is returned to the storage tank through a return pipe, and a return pump is provided on the return pipe.

2. The livestock and poultry breeding wastewater purification system according to claim 1, characterized in that: The organic matter tank is movably arranged on the device frame, and the organic matter tank is fixed on the device frame at an angle, or the organic matter tank can be adjusted along the water flow direction through an adjustment mechanism to adjust the water flow velocity meter residence time of the wastewater in the organic matter.

3. The livestock and poultry breeding wastewater purification system according to claim 2, characterized in that: The adjustment mechanism includes at least one supporting pad disposed below the upstream end of the organic matter tank.

4. The livestock and poultry breeding wastewater purification system according to claim 3, characterized in that: The device frame is provided with a baffle which cooperates with the downstream end portion of the organic matter tank to limit and stop.

5. The livestock and poultry breeding wastewater purification system according to claim 2, characterized in that: The regulating mechanism comprises a hinge portion between the downstream end of the organic tank and a device frame, and the device frame is provided with a driving mechanism for driving the upstream end of the organic tank to rotate along the hinge portion.

6. The livestock and poultry breeding wastewater purification system according to claim 5, characterized in that: The driving mechanism comprises a driving cylinder, one end of which is hinged to the organic matter tank, and the other end of which is hinged to the device frame.

7. The livestock and poultry breeding wastewater purification system according to claim 1, characterized in that: The primary treatment device includes two device racks sequentially arranged along the water flow direction, and each device rack is provided with the organic matter tank.

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