Small and medium-sized sewage treatment device for pig farm
By designing the sewage treatment device for small and medium-sized pig farms, and using three-stage precipitation and grille filtration technology, the problems of high cost and poor effect of sewage treatment in small and medium-sized pig farms are solved, and low-cost and efficient sewage treatment and recycling are achieved.
Patent Information
- Application Number
- CN202420973251.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing technology is difficult to effectively deal with sewage pollution in small and medium-sized pig farms, resulting in environmental pollution problems, and the investment and treatment costs are high, making it difficult to promote and apply.
A small and medium-sized sewage treatment device was designed, including two sets of sewage treatment systems. Each set of systems was equipped with a three-stage sedimentation tank and a grid tank. The sewage was treated through three-stage sedimentation and grid filtration to meet the irrigation water quality standards.
It realizes continuous and uninterrupted sewage treatment, reduces the investment and treatment costs of sewage treatment systems, is suitable for small and medium-sized pig farms, can effectively solve the problem of sewage pollution, and use the treated sewage for farmland irrigation.
Smart Images
Figure CN222623930U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to sewage treatment, and specifically relates to a small and medium-sized sewage treatment device used in a pig farm. Background Art
[0002] The sewage, ammonia nitrogen pollutants and heavy metal residues from livestock and poultry farms are the main sources of pollution to the surrounding environment. At present, domestic farms mainly use the following measures to deal with pollutants:
[0003] 1. Anaerobic digester pig manure and urine treatment system (Shengli Oilfield). The principle is: pig manure and urine sewage is introduced into a high-pressure tank through a sewage pipe, and the pathogens and eggs are killed by high-temperature treatment for harmless treatment. The treated solid waste is used to make fertilizer for the fields, and the separated liquid is used for farmland irrigation. The technical principle is feasible, but the disadvantage is that the investment is large and the treatment cost is high, which is difficult for general small and medium-sized pig farms to adopt.
[0004] 2. Pig slaughterhouse sewage treatment system (Sichuan Wuyou). Through aeration and three-stage sedimentation, sewage is treated to meet the standards of agricultural irrigation or livestock and poultry drinking water. The treated sewage can be recycled. The disadvantage is also that the investment is large and the treatment cost is high. The improvement of a complete sewage treatment system requires an infrastructure investment of three to four million yuan, which is difficult for general enterprises to do.
[0005] 3. Use a biogas digester to treat pig manure. The method is: build a closed biogas digester, pour the collected pig manure into the digester, and the pig manure can kill harmful bacteria and insect eggs through anaerobic fermentation. The pig manure can produce biogas - methane gas after fermentation. Collect and use biogas for heating, boiling water and cooking. The disadvantages are: time-consuming and labor-intensive, poor effect, few successes, and many formalities.
[0006] 4. Dry manure cleaning process with urine and feces separation. Most pig farms in China use dry manure cleaning process with urine and feces separation, combined with biofertilizer production, to achieve ecological farming and value-added benefits. The construction layout of the farm takes into account measures such as manure storage field, manure storage tank, sewage tank, closed sewage ditch, and organic fertilizer production, so that the solid pollutants in the farm are effectively treated, and the effect is relatively ideal. The disadvantage is that the polluted water is not purified, and the environmental pollution problem of livestock and poultry farms is not fundamentally solved.
[0007] 5. Fermentation bed farming combined with micro-fertilizer production. Pig manure and urine are excreted in the fermentation bed, which does not pollute the environment. Manure is spread in time to supplement the bedding and maintain the fermentation bed. A well-managed microbial fermentation bed can be used for more than one year. Fermentation bed farming can save investment in the construction of sewage ditches in pig farms, and the management of fermentation beds is labor-saving. The fermentation bed bedding can finally be used as raw materials for making micro-fertilizers, achieving secondary value-added. Some breeding units are often hindered by the fact that the pens have been formed. In the process of renovating the pens, purchasing expensive raw materials for fermentation beds, fermenting bedding is troublesome, and the production and sales of micro-fertilizers require market operations, they are too lazy to do anything, and are unwilling to invest more or spend more time and effort, which leads to the slow development of fermentation bed ecological breeding technology.
[0008] In view of this, the present utility model is proposed. Utility Model Content
[0009] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a small and medium-sized sewage treatment device for pig farms. To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:
[0010] A small and medium-sized sewage treatment device for a pig farm includes a sewage treatment system 1 and a sewage treatment system 2. Both the sewage treatment system 1 and the sewage treatment system 2 are provided with three-stage sedimentation tanks, namely a primary sedimentation tank, a secondary sedimentation tank and a tertiary sedimentation tank. The sewage treatment system also includes a sewage sedimentation well and a self-priming pump. The tertiary sedimentation tank is extended backward with a grille tank.
[0011] As a further solution of the utility model: the water pumping end of the self-priming pump extends to the sewage sedimentation well through a pipeline, and the water outlet end of the self-priming pump is connected to the primary sedimentation tanks of the sewage treatment system 1 and the sewage treatment system 2 through pipelines to supply sewage treatment.
[0012] As a further solution of the utility model: the length and width dimensions of the primary sedimentation tank, the secondary sedimentation tank, and the tertiary sedimentation tank are consistent, and the height dimensions of the primary sedimentation tank, the secondary sedimentation tank, and the tertiary sedimentation tank decrease successively.
[0013] As a further solution of the utility model: gates are arranged between the primary sedimentation tank and the secondary sedimentation tank, between the secondary sedimentation tank and the tertiary sedimentation tank, and between the tertiary sedimentation tank and the grille tank to facilitate the discharge of sewage to the lower level.
[0014] As a further solution of the utility model: the outer sides of the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are all provided with manure outlets, the grid pool includes a coarse grid area and a fine grid area, and the purified water in the fine grid area is directly used for farmland irrigation.
[0015] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.
[0016] The utility model is provided with two sets of sewage treatment systems, each of which is provided with a three-stage sedimentation tank. The two sets of sewage treatment systems are circulated and can realize continuous and uninterrupted sewage treatment. The setting of the grid tank can further purify the sewage and discharge the purified sewage to the corresponding area.
[0017] The sewage treatment system of the utility model has the advantages of small investment, low cost, simple design, economy and practicality, and is easy to promote and apply, and is especially suitable for the construction of small and medium-sized pig farms.
[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] In the figure:
[0021] Figure 1 This is a rendering of the sewage treatment system of the utility model;
[0022] Figure 2 This is a elevation view of the sewage treatment system of the utility model;
[0023] Figure 3 This is a plan view of the sewage treatment system of the utility model;
[0024] Figure 4 This is a process flow chart of the sewage treatment system of the utility model.
[0025] In the figure: 1. Sewage sedimentation well; 2. Self-priming pump; 3. Sewage treatment system one; 4. Sewage treatment system two; 5. Primary sedimentation tank; 6. Secondary sedimentation tank; 7. Tertiary sedimentation tank; 8. Gate; 9. Screen pool; 10. Manure outlet; 11. Coarse screen area; 12. Fine screen area.
[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0028] like Figures 1 to 4 As shown, a small and medium-sized sewage treatment device for a pig farm includes a sewage treatment system 1 3 and a sewage treatment system 2 4. Both the sewage treatment system 1 3 and the sewage treatment system 2 4 are provided with three-stage sedimentation tanks 7, which are respectively a primary sedimentation tank 5, a secondary sedimentation tank 6 and a tertiary sedimentation tank 7. The sewage treatment system also includes a sewage sedimentation well 1 and a self-priming pump 2. The tertiary sedimentation tank 7 is extended backward with a grille tank 9.
[0029] Among them, the pumping end of the self-priming pump 2 extends to the sewage sedimentation well 1 through a pipeline, and the water outlet end of the self-priming pump 2 is connected to the primary sedimentation tank 5 of the sewage treatment system 1 3 and the sewage treatment system 2 4 through pipelines for sewage treatment supply.
[0030] The length and width of the primary sedimentation tank 5, the secondary sedimentation tank 6, and the tertiary sedimentation tank 7 are consistent, and the heights of the primary sedimentation tank 5, the secondary sedimentation tank 6, and the tertiary sedimentation tank 7 decrease in sequence.
[0031] Gates 8 are provided between the primary sedimentation tank 5 and the secondary sedimentation tank 6, between the secondary sedimentation tank 6 and the tertiary sedimentation tank 7, and between the tertiary sedimentation tank 7 and the grid tank 9 to facilitate the discharge of sewage to the lower level.
[0032] The outer sides of the primary sedimentation tank 5, the secondary sedimentation tank 6 and the tertiary sedimentation tank 7 are all provided with manure outlets 10. The grid tank 9 includes a coarse grid area 11 and a fine grid area 12. The purified water in the fine grid area 12 is directly used for farmland irrigation.
[0033] The working principle of the utility model is as follows: the sewage generated by the pig farm is discharged into the sewage sedimentation well 1, and the sewage is pumped out by the self-priming pump 2 and supplied to the primary sedimentation tank 5 of the sewage treatment system 1 3 and the sewage treatment system 2 4, and after primary sedimentation and aeration, it is sequentially supplied to the secondary sedimentation tank 6 and the tertiary sedimentation tank 7 for treatment. The sewage treated by the tertiary sedimentation basically reaches the irrigation water quality, and is further purified by the grille tank 9. The water flowing out from the fine grille area 12 can be used for farmland irrigation;
[0034] The length of the primary sedimentation tank 5, the secondary sedimentation tank 6, and the tertiary sedimentation tank 7 is 3M, the width is 2M, and the footprint is small. The size of the manure outlet 10 is 0.8m*1.2m, which is convenient for manure discharge operation;
[0035] This system is mainly suitable for pig farms that implement dry manure cleaning, have manure collection fields, sewage ditches, and realize feces and urine separation. The main features of this system are: it mainly treats sewage pollution in pig farms and solves the environmental pollution of sewage discharged from pig farms to the surrounding areas; secondly, the construction of this system does not require an investment of millions of yuan, which can save the construction investment of sewage treatment systems. To build and improve a set of small and medium-sized sewage purification systems, an investment of 200,000 yuan is enough, which can be done by general small and medium-sized pig farms. If the investment in micro-fertilizer production equipment and facilities is added, 500,000 yuan is enough. The treated feces solids can be used to make micro-fertilizers to achieve secondary value-added. Based on pig farms, it can drive the development of the secondary industry of organic fertilizer production; the treated sewage meets the standards of farmland irrigation water and can be recycled and used for farmland irrigation or for flushing pens;
[0036] The principle of the small and medium-sized sewage treatment system of the pig farm is basically the same as that of the large-scale farm (or slaughterhouse) to purify water quality, but it has small investment, low cost, simple design, economical and practical, and is easy to promote and apply. It only needs an investment of 300,000 to 500,000 yuan, which is only 1 / 10 of the investment of Sichuan Wuyou. It can be done by general small and medium-sized pig farms. The system is suitable for the construction of small and medium-sized pig farms and is easy to promote and apply in the society.
[0037] The sewage treatment system is combined with organic fertilizer production to effectively treat solid and liquid pollutants. Compared with solid-liquid mixing and dry manure cleaning processes, it has low investment and a single solid-liquid treatment process system. It is a beneficial attempt and technological innovation in the construction of ecological pig farms and comprehensive technical measures to solve the pollution of solid and liquid pollutants in pig farms.
[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.
Claims
1. A small and medium-sized sewage treatment device for a pig farm, comprising a sewage treatment system 1 (3) and a sewage treatment system 2 (4), characterized in that: The sewage treatment system 1 (3) and the sewage treatment system 2 (4) are both provided with three-stage sedimentation tanks (7), namely a primary sedimentation tank (5), a secondary sedimentation tank (6) and a tertiary sedimentation tank (7). The sewage treatment system also includes a sewage sedimentation well (1) and a self-priming pump (2). The tertiary sedimentation tank (7) is provided with a grille tank (9) extending backward.
2. The small and medium-sized sewage treatment device for pig farms according to claim 1 is characterized in that: The water pumping end of the self-priming pump (2) extends into the sewage sedimentation well (1) through a pipeline, and the water outlet end of the self-priming pump (2) is connected to the primary sedimentation tank (5) of the sewage treatment system 1 (3) and the sewage treatment system 2 (4) through pipelines.
3. The small and medium-sized sewage treatment device for pig farms according to claim 2 is characterized in that: The length and width of the primary sedimentation tank (5), the secondary sedimentation tank (6), and the tertiary sedimentation tank (7) are consistent, and the heights of the primary sedimentation tank (5), the secondary sedimentation tank (6), and the tertiary sedimentation tank (7) decrease in sequence.
4. The small and medium-sized sewage treatment device for pig farms according to claim 3 is characterized in that: Gates (8) are provided between the primary sedimentation tank (5) and the secondary sedimentation tank (6), between the secondary sedimentation tank (6) and the tertiary sedimentation tank (7), and between the tertiary sedimentation tank (7) and the grid tank (9).
5. The small and medium-sized sewage treatment device for pig farms according to claim 4 is characterized in that: The outer sides of the primary sedimentation tank (5), the secondary sedimentation tank (6) and the tertiary sedimentation tank (7) are all provided with feces outlets (10), and the grid tank (9) comprises a coarse grid area (11) and a fine grid area (12).