A pig farm wastewater treatment device

Abstract

The utility model relates to related technical field of wastewater treatment especially, it is a pig farm wastewater treatment device, include: physical pretreatment module, electric control system, electric coagulation core processing module, sludge treatment module and pretreatment effluent module, the physical pretreatment module is used to carry out solid -liquid separation treatment to sewage, the application adopts electric field electric flocculation technology and pretreats the pig farm wastewater after anaerobic digestion, makes the content such as chroma, turbidity, salinity of wastewater after pretreatment satisfy the best growth need of energy microalgae, and removes big solid impurity and dung residue through grid catch basin and solid -liquid separation machine, protects subsequent equipment, and electric coagulation reactor combines flocculation and precipitation, effectively adsorbs heavy metal, colloid and so on pollutant, and cooperates sludge treater and dry outside transport and reduces sludge volume, is convenient for disposal, realizes whole process and gives consideration to pretreatment, advanced treatment and sludge disposal, realizes the efficient, stable treatment of pig farm wastewater.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device for pig farms. Background Technology

[0002] Pig farm wastewater treatment is a process for purifying high-concentration wastewater (containing large amounts of bacteria, ammonia nitrogen, and organic phosphorus) and sludge generated from livestock and poultry farming, primarily addressing wastewater treatment challenges. This process improves the farm environment and removes pollutants through equipment application. The treated water can be reused for farmland irrigation, alleviating freshwater shortages in rural areas, and the biogas produced during anaerobic decomposition can be used for power generation. Some systems incorporate constructed wetland technology for ecological restoration.

[0003] Currently, insufficient light in pig farm wastewater severely inhibits the oxygen-emitting photosynthesis of algal cells, while the high color and turbidity of the raw wastewater are the main reasons affecting the water's light transmittance. Even after pretreatment, commercially available pig farm wastewater treatment devices often fail to meet the optimal growth requirements of energy-producing microalgae in terms of color, turbidity, and salinity, thus reducing treatment efficiency and causing inconvenience to wastewater treatment operations. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater treatment device for pig farms to solve the problems mentioned in the background art.

[0005] The technical solution adopted in this utility model is: A wastewater treatment device for pig farms includes: a physical pretreatment module, an electrical control system, an electrocoagulation core treatment module, a sludge treatment module, and a pretreated effluent module. The physical pretreatment module is used for solid-liquid separation of wastewater. The electrocoagulation core treatment module includes: an electrocoagulation reactor connected to the physical pretreatment module and the electrical control system via a water pump and a cable, respectively; a flocculation reaction tank connected to the electrocoagulation reactor via a pipeline; and an inclined plate sedimentation tank connected to the flocculation reaction tank via a pump. The sludge treatment module includes: a sludge processor connected to the inclined plate sedimentation tank via a sludge conveying pipeline for treating chemical sludge and transporting the sludge to an external sludge discharge point via drying. The inclined plate sedimentation tank is connected to the pretreated effluent module.

[0006] Optionally, the electrical control system includes a DC power supply, which is electrically connected to the electro-coagulation core processing module via a power supply cable.

[0007] Optionally, the physical pretreatment module includes: a waste discharge pipe with one end connected to the bar screen collection tank; a solid-liquid separator connected to the bar screen collection tank via a booster pump; and an equalization tank connected to the discharge port of the solid-liquid separator via a pipeline.

[0008] Optionally, a base is fixedly connected to the bottom of the inclined plate sedimentation tank, a threaded rod is provided at the bottom of the base, a movable wheel is rotatably connected inside the base, a push plate is threadedly connected to the outside of the movable wheel, a motor is fixedly connected to the top of the base, and a transmission wheel is fixedly connected to both the output end of the motor and the outside of the movable wheel. The two transmission wheels are connected by a transmission belt.

[0009] Optionally, the push plate has a C-shaped cross-section.

[0010] Optionally, the movable wheel is located at the center of the base.

[0011] Optionally, the base has an internal cavity, the height of which is greater than the height of the threaded rod.

[0012] Optionally, the bottom of the threaded rod is provided with an anti-slip pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This application employs electric field electrocoagulation technology to pretreat anaerobic digested pig farm wastewater, ensuring that the pretreated wastewater meets the optimal growth requirements of energy microalgae in terms of color, turbidity, and salinity. Large solid impurities and manure are removed through a bar screen collection tank and solid-liquid separator, protecting downstream equipment. The electrocoagulation reactor, combined with flocculation sedimentation, effectively adsorbs heavy metals, colloids, and other pollutants. Furthermore, sludge treatment and drying processes reduce sludge volume for easier disposal. This overall process integrates pretreatment, advanced treatment, and sludge disposal, achieving efficient and stable treatment of pig farm wastewater. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram illustrating the steps involved in this application; Figure 3 This is a three-dimensional structural diagram of the inclined plate sedimentation tank in this application.

[0016] Figure label: 10. Physical pretreatment module; 20. Electrical control system; 30. Electrocoagulation core treatment module; 40. Sludge treatment module; 50. Pretreated effluent module; 101. Waste discharge pipe; 102. Bar screen collection tank; 103. Solid-liquid separator; 104. Equalization tank; 201. DC power supply; 301. Electrocoagulation reactor; 302. Flocculation reaction tank; 303. Inclined plate sedimentation tank; 401. Sludge treatment device; 402. Sludge off-site disposal method; 3031, base; 3032, threaded rod; 3033, caster wheel; 3034, push plate; 3035, motor; 3036, transmission wheel; 3037, transmission belt. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] Given that current technologies severely inhibit algal photosynthesis due to insufficient light in pig farm wastewater, and that the high color and turbidity of the raw wastewater are the main reasons affecting its light transmittance, existing pig farm wastewater treatment devices, even after pretreatment, fail to meet the optimal growth requirements of energy microalgae in terms of color, turbidity, and salinity, thus reducing treatment efficiency and causing inconvenience to wastewater treatment operations.

[0020] like Figure 1-3As shown in the figure, this utility model provides a pig farm wastewater treatment device, including: a physical pretreatment module 10, an electrical control system 20, an electrocoagulation core treatment module 30, a sludge treatment module 40, and a pretreated effluent module 50. The physical pretreatment module 10 is used for solid-liquid separation treatment of wastewater. The electrocoagulation core treatment module 30 includes: an electrocoagulation reactor 301 connected to the physical pretreatment module 10 and the electrical control system 20 via a water pump and a cable, respectively; a flocculation reaction tank 302 connected to the electrocoagulation reactor 301 via a pipeline; and an inclined plate sedimentation tank 303 connected to the flocculation reactor 301 via a pump. The sludge treatment module 40 is connected to the inclined plate sedimentation tank 303 via a sludge conveying pipeline. It is used to treat chemical sludge and transport the sludge to the sludge discharge outlet 402 by drying. The inclined plate sedimentation tank 303 is connected to the pretreatment effluent module 50. The physical pretreatment module 10 includes: a waste discharge pipe 101, one end of which is connected to the bar screen collection tank 102; a solid-liquid separator 103 connected to the bar screen collection tank 102 via a lift pump; and an equalization tank 104 connected to the discharge port of the solid-liquid separator 103 via a pipeline.

[0021] Before treating the pig farm wastewater, it is first transported to the grit collection tank 102 through the waste discharge pipe 101 in the physical pretreatment module 10 to intercept large solid impurities in the wastewater and prevent subsequent equipment blockage or damage. Then, the treated pig farm wastewater is transported to the solid-liquid separator 103 by a lift pump to separate the solid manure and wastewater in the pig farm wastewater. The wastewater then enters the equalization tank 104 for physical mixing and chemical adjustment to ensure the stability of the wastewater properties when it enters the next treatment stage. Finally, the wastewater in the equalization tank 104 is transported to the electrocoagulation reactor 301 by an inlet pump, where it is electrolyzed with a metal anode (such as iron or aluminum) to produce... The raw hydrogen hydroxide flocs adsorb and precipitate pollutants in the wastewater. At the same time, hydrogen bubbles generated at the cathode assist in air flotation separation. The effluent containing flocs then enters the flocculation reaction tank 302 and, after stirring, enters the inclined plate sedimentation tank 303. After being treated sequentially, the wastewater is decomposed again into chemical sludge and supernatant. At this time, the solid manure separated by the solid-liquid separator 103 and the chemical sludge discharged from the inclined plate sedimentation tank 303 are transported to the sludge discharge outlet 402 for further treatment through the sludge processor 401 and in conjunction with drying and external transportation. Meanwhile, the supernatant discharged from the inclined plate sedimentation tank 303 enters the pretreatment effluent module 50, completing the treatment of pig farm wastewater.

[0022] Furthermore, the electrical control system 20 includes a DC power supply 201, which is electrically connected to the electro-coagulation core processing module 30 via a power supply cable.

[0023] Furthermore, a base 3031 is fixedly connected to the bottom of the inclined plate sedimentation tank 303. A threaded rod 3032 is provided at the bottom of the base 3031. A movable wheel 3033 is rotatably connected inside the base 3031. A push plate 3034 is threadedly connected to the outside of the movable wheel 3033. A motor 3035 is fixedly connected to the top of the base 3031. A transmission wheel 3036 is fixedly connected to both the output end of the motor 3035 and the outside of the movable wheel 3033. The two transmission wheels 3036 are connected by a transmission belt 3037.

[0024] Before installation, the equipment can be moved directly using the casters 3033 at the bottom of the base 3031. Then, by turning on the motor 3035, its output end drives one transmission wheel 3036 to rotate. Simultaneously, through the transmission belt 3037, it drives another transmission wheel 3036 and the threaded rod 3032 to rotate. Then, through the threaded connection between the threaded rod 3032 and the push plate 3034, the push plate 3034 slides out of the base 3031 and supports the base 3031. After the casters 3033 are separated from the ground, the installation of the inclined plate sedimentation tank 303 is completed. Then, connect all the pipelines for subsequent wastewater treatment.

[0025] Furthermore, the push plate 3034 has a C-shaped cross-section, making the contact shape between the push plate 3034 and the ground rectangular, which does not affect the normal use of the moving wheel 3033.

[0026] Furthermore, the movable wheel 3033 is located at the center of the base 3031, which makes the push plate 3034 subjected to force evenly and slide more stably up and down.

[0027] Furthermore, the base 3031 has a cavity inside, the height of which is greater than the height of the threaded rod 3032, increasing the sliding range of the push plate 3034 and facilitating its support of the base 3031.

[0028] Furthermore, the bottom of the threaded rod 3032 is provided with an anti-slip pad to improve the anti-slip effect.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wastewater treatment device for pig farms, characterized in that, include: The system comprises a physical pretreatment module (10), an electrical control system (20), an electrocoagulation core treatment module (30), a sludge treatment module (40), and a pretreated effluent module (50). The physical pretreatment module (10) is used for solid-liquid separation treatment of wastewater. The electrocoagulation core treatment module (30) includes: The electrocoagulation reactor (301) is connected to the physical pretreatment module (10) and the electrical control system (20) via a water pump and a cable, respectively. The flocculation reaction tank (302) is connected to the electrocoagulation reactor (301) via a pipeline; An inclined plate sedimentation tank (303) is connected to the flocculation reaction tank (302) via a pump body. The sludge treatment module (40) includes: The sludge processor (401) is connected to the inclined plate sedimentation tank (303) through a sludge conveying pipeline. It is used to treat chemical sludge and transport the sludge to the sludge outfall (402) by drying and external transportation. The inclined plate sedimentation tank (303) is connected to the pre-treated effluent module (50).

2. The pig farm wastewater treatment device according to claim 1, characterized in that, The electrical control system (20) includes a DC power supply (201), which is electrically connected to the electro-coagulation core processing module (30) via a power supply cable.

3. The pig farm wastewater treatment device according to claim 1, characterized in that, The physical preprocessing module (10) includes: Waste discharge pipe (101), one end of which is connected to the grid collection tank (102); The solid-liquid separator (103) is connected to the grid collection tank (102) via a lift pump; The equalization tank (104) is connected to the discharge port of the solid-liquid separator (103) via a pipeline.

4. The pig farm wastewater treatment device according to claim 1, characterized in that, The inclined plate sedimentation tank (303) is fixedly connected to a base (3031) at its bottom end. A threaded rod (3032) is provided at the bottom of the base (3031). A movable wheel (3033) is rotatably connected inside the base (3031). A push plate (3034) is threadedly connected to the outside of the movable wheel (3033). A motor (3035) is fixedly connected to the top of the base (3031). A transmission wheel (3036) is fixedly connected to both the output end of the motor (3035) and the outside of the movable wheel (3033). The two transmission wheels (3036) are connected by a transmission belt (3037).

5. The pig farm wastewater treatment device according to claim 4, characterized in that, The push plate (3034) has a C-shaped cross section.

6. The pig farm wastewater treatment device according to claim 4, characterized in that, The movable wheel (3033) is located at the center of the base (3031).

7. The pig farm wastewater treatment device according to claim 4, characterized in that, The base (3031) has a cavity inside, and the height of the cavity is greater than the height of the threaded rod (3032).

8. The pig farm wastewater treatment device according to claim 4, characterized in that, The bottom of the threaded rod (3032) is provided with an anti-slip pad.

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