Breeding wastewater treatment system

Abstract

The utility model discloses an aquaculture wastewater treatment system, which belongs to the technical field of sewage treatment and is characterized in that a pretreatment line for pretreating sewage, a filter line for filtering the sewage and a disinfection line for disinfecting the treated sewage are sequentially connected along the sewage inlet direction; the pretreatment line comprises a grating lifting well, a regulating tank, an anoxic tank, an aerobic tank and an MBR (Membrane Bioreactor) membrane tank; the filter line comprises a carbon filter tank; the disinfection line comprises an ultraviolet disinfector, and the system can effectively treat sewage generated by the domestication center, reduce emission of harmful substances and reduce pollution to the environment. And through deep treatment, the sewage can be converted into reclaimed water, so that the use of fresh water resources is reduced, and the water resources are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a breeding wastewater treatment system. Background Art

[0002] The breeding wastewater treatment system is an efficient and environmentally friendly water treatment system. This system is specifically designed according to the characteristics of the sewage generated by the breeding center, aiming to convert the sewage into reusable reclaimed water through a series of treatment steps. The sewage first undergoes pretreatment to remove large particulate matter and suspended solids, and then enters the biological treatment stage, where microorganisms are used to degrade organic matter. Next, advanced treatment further removes pollutants to ensure that the water quality meets the standards. Finally, disinfection is carried out to ensure the safety and harmlessness of the effluent. The treated reclaimed water can be used for non-drinking water needs in the breeding center, such as site flushing, green plant irrigation, etc., to achieve the recycling of water resources. This system not only helps to save fresh water resources, reduce operating costs, but also reduces the environmental impact of sewage discharge. The entire system is easy to operate and maintain, and meets the requirements of environmental protection regulations. Through this sewage and reclaimed water reuse treatment system, the working dog breeding center not only ensures the health of working dogs, but also actively fulfills its environmental protection responsibilities and makes contributions to sustainable development.

[0003] The prior art, such as the Chinese patent with the publication number CN101712517A, discloses a sewage treatment and recycling method and filter tank for animal breeding bases. The sewage treatment and recycling method for animal breeding bases includes the following steps: Step 1) Input the sewage mixed with animal feces into a grille tank for pretreatment, separate the feces from the water, and filter out the pretreated sewage with high organic matter and bacteria content; Step 2) Place the pretreated sewage processed in Step 1) into a filter tank filled with multiple layers of mineral materials for secondary sewage treatment; Step 3) Discharge the secondary treated sewage processed in Step 2) into a clear water sedimentation tank; Step 4) Reuse the clear water processed in Step 3) as animal washing water or drinking water for recycling.

[0004] The above patent has too few sewage treatment processes and the treatment is not thorough enough. Summary of the Utility Model

[0005] The utility model aims to provide a breeding wastewater treatment system that can treat the sewage of the breeding center and use the treated reclaimed water.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A breeding wastewater treatment system is successively connected, along the sewage inlet direction, with a pretreatment line for pretreating sewage, a filtration line for filtering sewage, and a disinfection line for disinfecting the treated sewage; the pretreatment line includes a grille lift well, an adjustment tank, an anoxic tank, an aerobic tank, and an MBR membrane tank; the filtration line includes a carbon filter tank; the disinfection line includes an ultraviolet disinfection device.

[0008] The preferred technical solution of the present utility model is that an intermediate water tank is arranged between the filtration line and the pretreatment line. The intermediate water tank includes a feed water pump and a self-priming pump. The feed water pump is connected to the carbon filter tank, and the self-priming pump is connected to the MBR membrane tank.

[0009] The preferred technical solution of the present utility model is that blowers are arranged in the anoxic tank, the MBR membrane tank, and the aerobic tank.

[0010] The preferred technical solution of the present utility model is that an anaerobic tank is arranged between the anoxic tank and the aerobic tank.

[0011] The preferred technical solution of the present utility model is that the filtration line further includes a plurality of ultrafiltration columns, a chemical cleaning pump, and a chemical cleaning water tank. The chemical cleaning pump is connected to the chemical cleaning water tank and the carbon filter tank, and the plurality of ultrafiltration columns are located between the carbon filter tank and the chemical cleaning water tank.

[0012] The preferred technical solution of the present utility model is that a water production line is further included. The water production line is connected to the disinfection line; the water production line includes a water production tank, and a constant pressure water supply pump and a backwashing pump are arranged in the water production tank.

[0013] The preferred technical solution of the present utility model is that an irrigation and flushing line is further included. The irrigation and flushing line is connected to the disinfection line.

[0014] The preferred technical solution of the present utility model is that the intermediate water tank is further provided with an overflow drain port.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model aims to provide a breeding wastewater treatment system. Through multiple treatment processes, the system can effectively treat the sewage generated by the breeding center, reduce the emission of harmful substances, and reduce environmental pollution. Through in-depth treatment, the sewage can be converted into reclaimed water, reducing the use of fresh water resources, which is beneficial to protecting water resources. Then, through the flushing and irrigation line, the treated water can be used for non-drinking purposes such as flushing toilets and greening, thereby reducing the demand for tap water. This can not only save a large amount of water resources but also help relieve the urban water supply pressure. Description of the Drawings

[0017] Figure 1It is a schematic flow diagram of the overall structure of the aquaculture wastewater treatment system provided in the specific embodiment of the present utility model;

[0018] Figure 2 It is a specific schematic flow diagram of the overall structure of the aquaculture wastewater treatment system provided in the specific embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the overall structure of the pretreatment line of the aquaculture wastewater treatment system provided in the specific embodiment of the present utility model;

[0020] Figure 4 It is a schematic diagram of a partial structure of the aquaculture wastewater treatment system provided in the specific embodiment of the present utility model;

[0021] In the figure:

[0022] 1. Grid lifting well; 2. Regulation tank; 3. Anoxic tank; 4. Aerobic tank; 5. MBR membrane tank; 6. Carbon filter tank; 7. Intermediate water tank; 8. Feed pump; 9. Self-priming pump; 10. Blower; 11. Anaerobic tank; 12. Ultrafiltration column; 13. Chemical cleaning pump; 14. Chemical cleaning water tank. Specific embodiment

[0023] The technical solution of the present utility model will be further described below in conjunction with the drawings and through specific embodiments.

[0024] As Figures 1-4 shown, an aquaculture wastewater treatment system provided by the present utility model includes a pretreatment line, a filtration line for filtering sewage, and a disinfection line for disinfecting the treated sewage. By treating the sewage generated by the breeding center through multiple processes, the pretreatment mainly removes large particulate matter and suspended solids in the sewage through facilities such as grids, and biological treatments such as the anaerobic tank 11, anoxic tank 3, and aerobic tank 4 utilize the metabolic functions of microorganisms to convert the organic matter in the sewage into stable inorganic substances; the filtration line further removes pollutants such as nutrient salts and heavy metals in the sewage through in-depth treatment; finally, the disinfection line ensures that the effluent meets relevant standards, and then the reclaimed water is reused, such as being used through the irrigation and flushing line to improve the quality of the reclaimed water.

[0025] The pretreatment line includes a grille lift well 1, an adjustment tank 2, an anoxic tank 3, an anaerobic tank 11, an aerobic tank 4, and an MBR membrane tank 5. Cable floating liquid level switches are installed in the grille lift well 1, the adjustment tank 2, and the MBR membrane tank 5. Sewage is conveyed through the lift well, and the adjustment tank 2 makes adjustments. The main function of the anoxic tank 3 is to create an anoxic environment (dissolved oxygen less than 0.5), which is conducive to the growth of anoxic microorganisms. In this environment, anoxic microorganisms can adsorb and degrade organic matter with activated sludge. A key function of the anoxic tank 3 is to treat the mixed liquid refluxed from the aerobic tank 4. The nitrite nitrogen and nitrate nitrogen in it are converted into nitrogen gas under the action of denitrifying bacteria and released into the water, and finally enter the atmosphere. This reaction in the anoxic tank 3 not only helps to remove nitrogen elements from the sewage but also reduces the load of subsequent treatment steps. The aerobic tank 4 mainly creates an aerobic environment (dissolved oxygen between 2 and 4), which is conducive to the growth of aerobic microorganisms. The aerobic microorganisms in the aerobic tank 4 adsorb and degrade organic matter with activated sludge to further purify the sewage. In this process, the carbon element in the organic matter is oxidized into compounds such as carbon dioxide and water; the nitrogen element is oxidized into nitrite nitrogen and nitrate nitrogen; the phosphorus element is oxidized into phosphate radicals. In addition, under aerobic conditions, polyphosphate-accumulating bacteria can absorb several times more phosphate radicals than under anaerobic conditions, which helps to further reduce the phosphorus content in the sewage. Finally, it enters the filtration line after being re-treated in the MBR membrane tank 5.

[0026] Moreover, the aerobic tank 4, the anoxic tank 3, and the MBR membrane tank 5 are equipped with a blower 10. Through the conversion of mechanical energy, the blower 10 compresses the gas and sprays it into the tank, so that the microorganisms in the tank can obtain sufficient oxygen supply, thereby promoting the growth and metabolism of the biological flora.

[0027] The filtration line includes a carbon filter tank 6, an ultrafiltration column 12, a chemical cleaning pump 13, and a chemical cleaning water tank 14. The ultrafiltration column 12 is a device that uses an ultrafiltration membrane to filter macromolecular substances in liquids or gases, and its working principle is mainly based on the sieving effect of the membrane. The ultrafiltration column 12 can separate macromolecular substances and colloidal particles from the sample, while smaller molecules can enter the collection liquid through the membrane pores. The chemical cleaning pump 13 is respectively connected to the chemical cleaning water tank 14 and the carbon filter tank 6. Several ultrafiltration columns 12 are located between the carbon filter tank 6 and the chemical cleaning water tank 14, that is, the carbon filter tank 6 is connected to the ultrafiltration column 12, the ultrafiltration column 12 is connected to the chemical cleaning water tank 14, then the chemical cleaning water tank 14 is connected to the chemical cleaning pump 13, and the other end of the chemical cleaning pump 13 is connected to a filter, and the filter is connected to the carbon filter tank 6.

[0028] It also includes a water production line. The water production line includes a water production tank, in which a constant pressure water supply pump and a backwashing pump are installed. The water production tank is located between the disinfection line and the filtration line. The disinfection line includes an ultraviolet disinfection device, and the disinfection line is connected to an irrigation and flushing line for the purpose of irrigating and flushing the treated reclaimed water.

[0029] An intermediate water tank 7 is provided between the pretreatment line and the filtration line. The intermediate water tank 7 is also provided with an overflow drain port, and its main function is to guide the excess liquid to a predetermined area when the drainage volume exceeds the system processing capacity, so as to avoid waterlogging discharge or liquid overflow.

[0030] The treatment process is as Figures 1-2 shown. It passes through the grille lifting well 1, the regulating tank 2, the anaerobic / anoxic tank 11, the aerobic tank 4 and the MBR membrane tank 5, and then is transported to the intermediate water tank 7 through the self-priming pump 9. The intermediate water tank 7 is then transported to the carbon filter tank 6 and the ultrafiltration column 12 through the feed pump 8 and then reaches the product water tank. The product water tank has a constant pressure water pump to supply water to the disinfection line at a constant pressure, and after passing through the ultraviolet disinfection device, processes such as flushing or irrigation are carried out.

[0031] The present utility model is described by preferred embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. The present utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of the present utility model.

Claims

1. A breeding wastewater treatment system, characterized in that: It is successively connected with a pretreatment line for pretreating sewage, a filtration line for filtering sewage, and a disinfection line for disinfecting the treated sewage along the sewage inlet direction; The pretreatment line includes a grille lifting well (1), an adjustment tank (2), an anoxic tank (3), an aerobic tank (4), and an MBR membrane tank (5); The filtration line includes a carbon filter tank (6), several ultrafiltration columns (12), a chemical cleaning pump (13), and a chemical cleaning water tank (14). The chemical cleaning pump (13) is connected to the chemical cleaning water tank (14) and the carbon filter tank (6), and several of the ultrafiltration columns (12) are located between the carbon filter tank (6) and the chemical cleaning water tank (14); An intermediate water tank (7) is arranged between the filtration line and the pretreatment line. The intermediate water tank (7) includes a water inlet pump (8) and a self-priming pump (9). The water inlet pump (8) is connected to the carbon filter tank (6), and the self-priming pump (9) is connected to the MBR membrane tank (5); The intermediate water tank (7) is also provided with an overflow drain port; The disinfection line includes an ultraviolet disinfection device.

2. The breeding wastewater treatment system according to claim 1, characterized in that: The anoxic tank (3), the MBR membrane tank (5), and the aerobic tank (4) are provided with a blower (10).

3. The breeding wastewater treatment system according to claim 1, characterized in that: An anaerobic tank (11) is arranged between the anoxic tank (3) and the aerobic tank (4).

4. The breeding wastewater treatment system according to claim 1, characterized in that: It further includes a water production line, and the water production line is connected to the disinfection line; The water production line includes a water production tank, and a constant pressure water supply pump and a backwashing pump are arranged in the water production tank.

5. The breeding wastewater treatment system according to claim 1, characterized in that: It further includes an irrigation and flushing line, and the irrigation and flushing line is connected to the disinfection line.

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