Ecological treatment system for livestock breeding wastewater

Abstract

The utility model relates to an ecological treatment system for livestock breeding wastewater, which comprises a solid-liquid separation tank, a solid waste collection tank, a secondary separation tank, an ecological treatment tank, a disinfection tank, a filter water purification pipe and a drainage ditch, the upper end of the solid-liquid separation tank is provided with a screen which is inclined downwards and faces the solid waste collection tank, and a vibrator is arranged below the screen. The secondary separation tank is connected with the solid waste collection tank through a sludge pump, the solid-liquid separation tank is connected with the secondary separation tank through a lifting pump, and the secondary separation tank, the ecological treatment tank, the disinfection tank, the filtering water purification pipe and the drainage ditch are sequentially connected. According to the livestock breeding wastewater ecological treatment system, the steps are simple, solid waste is fully recycled, and the treated wastewater easily reaches the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to an ecological treatment system for livestock breeding wastewater. Background Art

[0002] Livestock wastewater that is discharged without treatment contains a large amount of pollutants, including a large amount of suspended solids, and high concentrations of organic matter, ammonia nitrogen, and total phosphorus. It is a high-concentration organic pollution source. After being discharged into ditches, ponds, rivers, and lakes, it is easy to cause eutrophication of water bodies, causing algae and other plankton to reproduce and grow wildly, resulting in a decrease in dissolved oxygen content in the water and the production of various toxins, directly affecting fish growth and even causing death, and indirectly affecting people's health and living standards.

[0003] As the country pays more and more attention to environmental protection, the treatment of livestock and poultry wastewater has attracted great attention from relevant departments, and the requirements for effluent indicators are becoming more and more stringent. The biotechnology treatment of livestock and poultry wastewater mainly uses ecological plants for treatment, which has the advantages of low investment, low operating costs, low technical barriers and high efficiency. It is increasingly valued and promoted by breeding companies. However, the existing livestock and poultry wastewater treatment methods have problems such as cumbersome steps, inability to fully recycle solid waste, and difficulty in meeting treatment standards, which need further improvement. Utility Model Content

[0004] The utility model aims to design an ecological treatment system for livestock breeding wastewater, which has simple implementation steps, fully recycles solid wastes, and makes it easy for the treated wastewater to meet the standards.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A livestock breeding wastewater ecological treatment system comprises a solid-liquid separation tank, a solid waste collection tank, a secondary separation tank, an ecological treatment tank, a disinfection tank, a filtering water purification pipe and a drainage ditch, wherein the upper end of the solid-liquid separation tank is provided with a screen inclined downward and facing the solid waste collection tank, a vibrator is provided under the screen, the secondary separation tank is connected to the solid waste collection tank through a sludge pump, the solid-liquid separation tank is connected to the secondary separation tank through a lifting pump, and the secondary separation tank, the ecological treatment tank, the disinfection tank, the filtering water purification pipe and the drainage ditch are connected in sequence.

[0007] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the upper end of the solid-liquid separation tank is also provided with a screw conveying device for inclined upward conveying, a leakage hole is provided at the bottom of the feeding channel of the screw conveying device, and an opening is provided at the upper end of the feeding channel, and the opening is located above the upper end of the screen.

[0008] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, a feed hopper is provided at the lower end of the screw conveying device.

[0009] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the sludge pump is connected to the dry-wet separator, and the dry-wet separator is connected to the solid waste collection tank.

[0010] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, a filter is provided in the secondary separation tank, and the filter is arranged at an angle.

[0011] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the ecological treatment pool includes a first ecological treatment pool and a second ecological treatment pool, and the first ecological treatment pool and the second ecological treatment pool both include fillers located at the bottom and ecological plants located at the top.

[0012] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the filler of the first ecological treatment pool is a mixture of limestone, struvite, expanded clay, volcanic rock, coarse sand, gravel and zeolite, and the ecological plant is green foxtail algae.

[0013] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the filler of the second ecological treatment pool is honeycomb activated carbon, and the ecological plant is water hyacinth.

[0014] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the filtering water purification pipe is filled with nitrogen removal filler, activated carbon filter layer and quartz sand filter layer in sequence.

[0015] Furthermore, in the above-mentioned livestock breeding wastewater ecological treatment system, the nitrogen removal filler is a combination of one or more of shale ceramsite, oyster shell powder, diatomaceous earth or modified clay.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides an ecological treatment system for livestock breeding wastewater, in which the waste materials from the breeding farm are separated into solid and liquid materials on the screen and finally enter the solid waste collection pool for collection, and the solid materials remaining in the wastewater are separated in the secondary separation pool, and finally pumped out by the sludge pump in the secondary separation pool and discharged into the solid waste collection pool, so that the solid waste is fully recovered, and the wastewater enters the ecological treatment pool, the disinfection pool and the filtration and purification pipe in sequence through the pipeline, and when it reaches the drainage ditch, the toxic substances, impurities, etc. in the wastewater are removed, and it is easy to meet the emission standards. The utility model provides an ecological treatment system for livestock breeding wastewater, which has simple steps, and only needs to put in waste materials to purify the wastewater through various structures, and discharge the qualified wastewater at the drainage ditch, and the solid waste can be fully recovered during the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a schematic diagram of the system structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] The names of the components marked in the figure are as follows:

[0021] 1. Solid-liquid separation tank; 11. Screw conveyor; 12. Screen; 121. Vibrator; 13. Lifting pump; 14. Feed hopper; 2. Solid waste collection tank; 3. Secondary separation tank; 31. Filter; 32. Sludge pump; 321. Dry-wet separator; 4. First ecological treatment tank; 5. Second ecological treatment tank; 6. Disinfection tank; 7. Filter water purification pipe; 71. Nitrogen removal filler; 72. Activated carbon filter layer; 73. Quartz sand filter layer; 8. Drain ditch. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Example: Please refer to Figure 1-2 , an ecological treatment system for livestock breeding wastewater, including a solid-liquid separation tank 1, a solid waste collection tank 2, a secondary separation tank 3, an ecological treatment tank, a disinfection tank 6, a filtering water purification pipe 7 and a drainage ditch 8, and the ecological treatment tank includes a first ecological treatment tank 4 and a second ecological treatment tank 5.

[0024] The upper end of the solid-liquid separation tank 1 is provided with a screw conveying device 11 and a screen 12. The screw conveying device 11 conveys the material obliquely upward. The lower end of the screw conveying device 11 is provided with a feed hopper 14 for convenient feeding. A leakage hole is provided at the bottom of the feeding channel of the screw conveying device 11. During the material conveying process, waste water in the material leaks into the tank below from the leakage hole. An opening is provided at the upper end of the feeding channel, and the opening is located above the screen 12. The material after preliminary solid-liquid separation falls into the screen 12 for solid-liquid separation again. A vibrator 121 is provided below the screen 12 to provide vibration for the screen 12. The screen 12 is tilted downward and toward the solid waste collection pool 2 by the power of movement. The material that has undergone solid-liquid separation again on the screen 12 finally enters the solid waste collection pool 2 for collection. The screw conveyor 11 and the screen 12 form an inverted V shape. The opening of the leakage hole of the feeding channel of the screw conveyor 11 is located above the upper end of the screen 12. By performing solid-liquid separation once on the screw conveyor 11 and the screen 12 respectively, the water content of the material collected in the solid waste collection pool 2 is greatly reduced, which means that more wastewater is collected in the solid-liquid separation pool 1, thereby improving the wastewater recovery rate.

[0025] A filter screen 31 is provided in the secondary separation tank 3. In this embodiment, the filter screen 31 is tilted to facilitate the wastewater in the secondary separation tank 3 to enter the first ecological treatment tank 4 at a lower water level. The secondary separation tank 3 is connected to the solid waste collection tank 2 through a sludge pump 32. Specifically, the sludge pump 32 is connected to the dry-wet separator 321, and the dry-wet separator 321 is connected to the solid waste collection tank 2. The sludge pump 32 can recycle and collect the solid waste filtered in the secondary separation tank 3, and the dry-wet separator 321 removes water from the solid waste and discharges it into the solid waste collection tank 2.

[0026] A lifting pump 13 is provided in the solid-liquid separation tank 1 , and the solid-liquid separation tank 1 is connected to the secondary separation tank 3 via the lifting pump 13 .

[0027] The secondary separation tank 3, the first ecological treatment tank 4, the second ecological treatment tank 5, the disinfection tank 6, the filtering water purification pipe 7 and the drainage ditch 8 are connected in sequence through pipelines.

[0028] The first ecological treatment pool 4 and the second ecological treatment pool 5 both include fillers at the bottom and ecological plants at the top. In this embodiment, the fillers of the first ecological treatment pool 4 are a mixture of limestone, struvite, ceramsite, volcanic rock, coarse sand, gravel and zeolite, and the ecological plants of the first ecological treatment pool 4 are green foxtail algae, which has a strong nitrogen and phosphorus absorption capacity, and can be used as orchard green manure or processed into poultry feed after harvesting and drying; the fillers of the second ecological treatment pool 5 are honeycomb activated carbon, and the ecological plants of the second ecological treatment pool 5 are water hyacinth, which is an aquatic plant with strong decontamination ability.

[0029] An ultraviolet sterilization device is provided in the disinfection pool 6, and existing technology can be used.

[0030] The filtration water purification pipe 7 is sequentially filled with a denitrification filler 71, an activated carbon filter layer 72 and a quartz sand filter layer 73, which is used to perform the final supplementary treatment on the wastewater after being treated in the ecological treatment pool, remove the residual nitrogen in the wastewater, and filter and purify the residual impurities in the wastewater. Among them, the denitrification filler 71 is a combination of one or more of shale ceramsite, oyster shell powder, diatomaceous earth or modified clay. In this embodiment, the denitrification filler 71 is diatomaceous earth.

[0031] Working principle of the present embodiment: The present embodiment provides an ecological treatment system for animal husbandry wastewater. The waste materials of the breeding farm enter the screw conveyor 11 from the feed hopper 14. The screw conveyor 11 conveys the materials obliquely from bottom to top to the upper end of the screen 12. During the conveying process, the wastewater in the materials leaks into the solid-liquid separation tank 1 from the leakage hole. The materials that have undergone preliminary solid-liquid separation fall into the screen 12 for solid-liquid separation again. The materials that have undergone solid-liquid separation again on the screen 12 finally enter the solid waste collection tank 2 for collection. By performing solid-liquid separation once in the screw conveyor 11 and the screen 12 respectively, the water content of the materials collected in the solid waste collection tank 2 is greatly reduced. The wastewater in the solid-liquid separation tank 1 is transported by the lifting pump 13. Sent to the secondary separation tank 3, the solid materials remaining in the wastewater cannot pass through the filter 31, and are finally extracted by the sludge pump 32 in the secondary separation tank 3, and discharged into the solid waste collection tank 2 after being dehydrated by the dry-wet separator 321, so that the solid waste is fully recovered, and the wastewater enters the first ecological treatment tank 4, the second ecological treatment tank 5, the disinfection tank 6 and the filtration and purification pipe 7 in sequence through the pipeline, and finally discharged into the drainage ditch 8 after reaching the standard, the wastewater is filtered and purified by fillers in the first ecological treatment tank 4 and the second ecological treatment tank 5, and the ecological plants absorb organic matter, disinfected in the disinfection tank 6, and nitrogen removed and filtered and purified in the filtration and purification pipe 7, so that when it reaches the drainage ditch 8, the toxic substances, impurities, etc. in the wastewater are removed, and it is easy to meet the emission standards. A kind of animal husbandry wastewater ecological treatment system provided in this embodiment has simple steps, and only needs to put in waste materials to purify the wastewater through each structure, and the wastewater that meets the standards is discharged at the drainage ditch 8, and the solid waste can be fully recovered during the treatment process.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An ecological treatment system for livestock breeding wastewater, characterized by: The invention comprises a solid-liquid separation tank (1), a solid waste collection tank (2), a secondary separation tank (3), an ecological treatment tank, a disinfection tank (6), a filtration water purification pipe (7) and a drainage ditch (8); the upper end of the solid-liquid separation tank (1) is provided with a screen (12) which is inclined downward and faces the solid waste collection tank (2); a vibrator (121) is provided below the screen (12); the secondary separation tank (3) is connected to the solid waste collection tank (2) via a sludge pump (32); the solid-liquid separation tank (1) is connected to the secondary separation tank (3) via a lifting pump (13); the secondary separation tank (3), the ecological treatment tank, the disinfection tank (6), the filtration water purification pipe (7) and the drainage ditch (8) are connected in sequence.

2. The livestock breeding wastewater ecological treatment system according to claim 1 is characterized by: The upper end of the solid-liquid separation tank (1) is also provided with a screw conveying device (11) for conveying upward at an angle, a leakage hole is provided at the bottom of the feeding channel of the screw conveying device (11), and an opening is provided at the upper end of the feeding channel, and the opening is located above the upper end of the screen (12).

3. The livestock breeding wastewater ecological treatment system according to claim 2 is characterized by: A feed hopper (14) is provided at the lower end of the screw conveying device (11).

4. The livestock breeding wastewater ecological treatment system according to claim 1 is characterized by: The sludge pump (32) is connected to a dry-wet separator (321), and the dry-wet separator (321) is connected to the solid waste collection tank (2).

5. The livestock breeding wastewater ecological treatment system according to claim 1 is characterized by: A filter screen (31) is provided in the secondary separation tank (3), and the filter screen (31) is arranged at an angle.

6. The livestock breeding wastewater ecological treatment system according to claim 1 is characterized by: The ecological treatment pool comprises a first ecological treatment pool (4) and a second ecological treatment pool (5), and both the first ecological treatment pool (4) and the second ecological treatment pool (5) comprise fillers at the bottom and ecological plants at the top.

7. The livestock breeding wastewater ecological treatment system according to claim 6 is characterized by: The filler of the first ecological treatment pool (4) is a mixture of limestone, struvite, ceramsite, volcanic rock, coarse sand, gravel and zeolite, and the ecological plant is green foxtail algae.

8. The livestock breeding wastewater ecological treatment system according to claim 6 is characterized by: The filler of the second ecological treatment pool (5) is honeycomb activated carbon, and the ecological plant is water hyacinth.

9. The livestock breeding wastewater ecological treatment system according to claim 1, characterized in that: The filtering water purification pipe (7) is filled with a denitrification filler (71), an activated carbon filter layer (72) and a quartz sand filter layer (73) in sequence.

10. The livestock breeding wastewater ecological treatment system according to claim 9, characterized in that: The nitrogen removal filler (71) is a combination of one or more of shale ceramsite, oyster shell powder, diatomaceous earth or modified clay.

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