Poyang Lake area pig farm manure collecting and discharging device

Abstract

The utility model discloses a feces collection and discharge device for a pig farm in a Poyang Lake region. The feces collection and discharge device for the pig farm in the Poyang Lake region comprises a film covering collection system and a pollutant treatment efficient degradation system. The covering film collecting system comprises a primary settling zone, an intermediate settling zone and an ultimate settling zone which are arranged in sequence. The efficient degradation system for pollutant treatment adopts an S-shaped treatment mode and specifically comprises three parts, namely a head section, a middle section and a tail section. According to the excrement collecting and discharging device for the pig farm in the Poyang Lake area, an anaerobic method is adopted for removing COD and SS, the primary removal effect is determined by the anaerobic depth and time, the sediment amount in the primary sedimentation area is the largest, solid sediment can be discharged in time by arranging the sediment discharging port, the effective excrement treatment capacity of the device is guaranteed, and the economic benefit is improved. Pollutants can be promoted to be degraded layer by layer, and finally the emission standard is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of aquaculture, and in particular relates to a device for collecting and discharging manure in pig farms in the Poyang Lake area. Background Art

[0002] Jiangxi is a major hog-raising province. With the rapid growth of hog production, the treatment and discharge of manure generated by this industry has become increasingly problematic. The treatment of hog manure presents challenges such as large wastewater volumes, high treatment costs, and the difficulty of pollution control. Pig farm wastewater is highly concentrated in organic matter, characterized by high levels of COD, ammonia nitrogen, TP, solid particles, and a strong odor. Direct discharge into water bodies can cause eutrophication, disrupting the ecological balance and severely impacting the environment.

[0003] Therefore, designing a pig farm manure collection and discharge device so that the sewage indicators after manure treatment meet environmental protection requirements has become a topic to be studied by technical personnel in this field. Utility Model Content

[0004] The present application provides a pig farm manure collection and discharge device in the Poyang Lake area, which is used to ensure that the indicators of sewage after manure treatment meet the requirements of the core protection zone of the lake body and the lakeside controlled development zone of the Poyang Lake Ecological and Economic Zone.

[0005] To achieve the above application objectives, the technical solutions adopted in this application are as follows:

[0006] The embodiment of the present application provides a pig farm waste collection and discharge device in the Poyang Lake area, comprising: a film-covered collection system and a pollutant treatment and efficient degradation system;

[0007] The membrane collection system includes a primary sedimentation area, an intermediate sedimentation area and a final sedimentation area which are arranged in sequence. The intermediate sedimentation area has a height difference with the primary sedimentation area, and the final sedimentation area has a height difference with the intermediate sedimentation area.

[0008] A first inlet is provided upstream of the primary sedimentation zone, and a first regulating valve is provided at the first inlet position; a second inlet is provided in the intermediate sedimentation zone, and a second regulating valve is provided at the second inlet position; a third inlet is provided in the final sedimentation zone, and a fourth inlet is provided upstream of the pollutant treatment and high-efficiency degradation system;

[0009] The first inlet and the second inlet are located on the same side of the entire device, and the second inlet, the third inlet and the fourth inlet are staggered;

[0010] The primary sedimentation zone is provided with a W-shaped flow channel, which is generally inclined toward the secondary sedimentation zone. The head end of the W-shaped flow channel is connected to the first inlet, and the tail end is connected to the second inlet.

[0011] The bottom of the primary sedimentation area is provided with a number of grids at an angle, and a solid removal device is also provided at the bottom of the primary sedimentation area;

[0012] The openings of the first regulating valve and the second regulating valve are used to adjust the residence time of feces in the primary sedimentation area.

[0013] Optionally, a sensor is provided in the primary sedimentation area for detecting the height of the bottom sediment; when the sensor detects that the height of the bottom sediment reaches a first threshold, the solid-state removal device is triggered to start to remove the bottom sediment from one side of the device to the other side.

[0014] Optionally, the pollutant treatment and high-efficiency degradation system adopts an S-type treatment method, which specifically includes three parts, namely the first section, the middle section and the tail section;

[0015] The first part, the S-shaped first section, is equipped with an anaerobic biofilm reactor;

[0016] In the second part, flocculants are added in the middle section of the S-shape;

[0017] The third part is to add a strong oxidant to the tail section of the S-type.

[0018] Optionally, functional bacteria are added to the intermediate sedimentation zone and the final sedimentation zone.

[0019] Optionally, a collection pipe is provided to collect gases generated during the anaerobic fermentation process of the film collection system, including methane, NH3, H2S, and odorous gases.

[0020] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0021] The present invention provides an integrated device for collecting and discharging pig farm waste in the Poyang Lake area. This device efficiently treats pig farm waste. Specifically, anaerobic treatment is used to remove COD and SS. The depth and duration of anaerobic treatment determine the effectiveness of the primary removal process. The primary sedimentation zone produces the most sediment, and a sediment outlet (i.e., the first outlet) ensures the timely discharge of solid sediment, ensuring the device's effective waste treatment capacity. It also promotes the gradual degradation of pollutants, ultimately achieving emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A schematic top view of a pig farm waste collection and discharge device in the Poyang Lake area provided by an embodiment of the present application is shown;

[0024] Figure 2 A control system diagram of a pig farm manure collection and discharge device in the Poyang Lake area provided by an embodiment of the present application is shown.

[0025] Illustration:

[0026] 10. Primary sedimentation zone; 11. W-shaped flow channel; 12. First inlet; 121. First regulating valve; 13. First outlet; 14. Grid; 15. Sensor; 16. Solid-state removal equipment;

[0027] 20. Intermediate sedimentation area; 21. Second inlet; 211. Second regulating valve; 22. First COD and SS measurement probe;

[0028] 30. Final sedimentation zone; 31. Third inlet; 311. First switch; 32. Second COD and SS measurement probe;

[0029] 40. Pollutant treatment and efficient degradation system; 41. S-shaped first section; 42. S-shaped middle section; 421. Sensor probe; 43. S-shaped tail section; 44. Fourth inlet; 441. Second switch; 45. Second outlet; 451. Third switch; 46. Third outlet;

[0030] 50. Film collection system;

[0031] 60. Controller. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] In order to illustrate the technical solution described in this application, specific embodiments are provided below.

[0036] See also Figure 1 and Figure 2 As shown, an embodiment of the present application provides a pig farm waste collection and discharge device in the Poyang Lake area, which includes two parts, one is a film-covered collection system 50, and the other is a pollutant treatment and efficient degradation system 40.

[0037] As an example, the capacity of the film collection system 50 is designed to store more than 120 days of manure based on the amount of manure produced. The film collection system 50 is divided into three areas according to height: the first area is the primary sedimentation area 10, which accounts for 50% of the entire film-covered area; the second area is the intermediate sedimentation area 20, which is 2 meters lower than the primary sedimentation area 10 and accounts for 30% of the entire film-covered area; and the third area is the final sedimentation area 30, which is 2 meters lower than the intermediate sedimentation area 20 and accounts for 20% of the entire film-covered area.

[0038] The primary sedimentation zone 10, the intermediate sedimentation zone 20 and the final sedimentation zone 30 are arranged in sequence. A first inlet 12 is provided upstream of the primary sedimentation zone 10 for the entry of pig farm manure. As an example, a first regulating valve 121 can be provided at the position of the first inlet 12. By setting the opening of the first regulating valve 121, the flow rate of manure entering the primary sedimentation zone 10 can be changed, and the residence time of manure in the primary sedimentation zone 10 can be indirectly controlled. The intermediate sedimentation zone 20 is provided with a second inlet 21 for receiving manure flowing out of the primary sedimentation zone 10. The final sedimentation zone 30 is provided with a third inlet 31 for receiving manure flowing out of the intermediate sedimentation zone 20. A fourth inlet 44 is provided upstream of the pollutant treatment and high-efficiency degradation system 40 for receiving manure flowing out of the final sedimentation zone 30.

[0039] It should be noted that the first inlet 12 and the second inlet 21 are located on the same side of the entire device, and the second inlet 21, the third inlet 31 and the fourth inlet 44 are staggered, so that the residence time of feces and sewage can be increased. For example, the primary sedimentation area 10 is provided with a curved flow channel, and the curved flow channel is a W-shaped flow channel 11. The head and tail ends of the W-shaped flow channel 11 are respectively connected to the first inlet 12 and the second inlet 21. The W-shaped flow channel 11 is used to extend the effective length of the flow channel between the first inlet 12 and the second inlet 21, thereby increasing the retention time and improving the fermentation effect. For another example, since the intermediate sedimentation area 20 and the ultimate sedimentation area 30 are not partitioned, the second inlet 21, the third inlet 31 and the fourth inlet 44 are staggered, so that the effective length of the flow channel between the second inlet 21 and the fourth inlet 44 can be extended, which can increase the residence time of feces and sewage in the intermediate sedimentation area 20 and the ultimate sedimentation area 30 and improve the fermentation effect.

[0040] In some embodiments of the present application, the primary sedimentation area 10 is provided with a W-shaped flow channel 11, and the whole is inclined toward the secondary sedimentation area 20. The head end of the W-shaped flow channel 11 is connected to the first inlet 12, and the tail end is connected to the second inlet 21. The W-shaped flow channel 11 can extend the residence time of feces in the primary sedimentation area 10. The purpose of being set to an inclination is to enable feces to flow automatically downstream. It should be noted that in order to ensure sufficient residence time (60 days), the inclination angle is relatively small, for example, about 5°.

[0041] In some embodiments of the present application, a plurality of grates 14 are provided at an angle at the bottom of the primary sedimentation zone 10. These grates 14 can intercept large suspended solids and the majority of the pig manure, thereby partially removing COD, ammonia nitrogen, TP, and SS. For example, the grates 14 are typically arranged at a 60° angle to the horizontal.

[0042] In some embodiments of the present application, a solid removal device 16 ( Figure 1 When the bottom sediment reaches 1 m (meter), the solid state removal device 16 is triggered to start to remove the bottom sediment from one side of the device to the other side. For example, a first outlet 13 is provided on the other side for timely removal of the bottom sediment.

[0043] As an example, in the primary sedimentation zone 10, the manure residence time is about 60 days.

[0044] It should be noted that a second regulating valve 211 can be provided at the second inlet 21, and the opening of the second regulating valve 211 can be adjusted to adjust the residence time of feces and sewage in the primary sedimentation area 10. In this manner, the openings of the first regulating valve 121 and the second regulating valve 211 can be set in combination, with one controlling the inflow and the other controlling the outflow, to comprehensively adjust the residence time of feces and sewage in the primary sedimentation area 10.

[0045] In some embodiments of the present application, a sensor 15 ( Figure 1 When the sensor 15 detects that the bottom sediment reaches 1 m (meter), the solid state cleaning device 16 is triggered to start to clean the bottom sediment from one side of the device to the other side.

[0046] In some embodiments of the present application, a first COD and SS measuring probe 22 is provided in the intermediate sedimentation zone 20. When the feces and sewage entering the intermediate sedimentation zone 20 reach the first pollutant set value, the feces and sewage enter the final sedimentation zone 30 through the third inlet 31.

[0047] In other words, if the sewage in the intermediate sedimentation zone 20 does not reach the set value for the first pollutant, the wastewater must be forced to remain in the intermediate sedimentation zone 20 for fermentation. Therefore, as an example, a first switch 311 (e.g., an on / off valve) can be provided at the third inlet 31. The first switch 311 controls whether the wastewater in the intermediate sedimentation zone 20 enters the final sedimentation zone 30. The final sedimentation zone 30 is used for further anaerobic sedimentation of the wastewater. A second COD and SS measurement probe 32 is also provided in the final sedimentation zone 30.

[0048] In some embodiments of the present application, in order to improve the efficiency of anaerobic fermentation and prevent short-circuiting and dead water zones, functional bacterial communities can be added to the intermediate sedimentation zone 20 and the final sedimentation zone 30. For example, a cake-shaped nanomaterial (8-12 cm in diameter, 2-3 cm thick) is suspended 30-80 cm below the water surface. The large specific surface area of ​​the nanomaterial provides a good and stable growth environment for EM functional bacteria, thereby resisting the impact of intense water conditions on microorganisms. EM functional bacteria are a stable bacterial community that includes nitrifying bacteria, denitrifying bacteria, nitrite bacteria, and ammonifying bacteria.

[0049] In some embodiments of the present application, a second COD and SS measuring probe 32 is provided in the final sedimentation zone 30. When the feces and sewage in the final sedimentation zone 30 reaches the second pollutant set value, the feces and sewage flow into the pollutant treatment and efficient degradation system 40 through the fourth inlet 44.

[0050] In other words, when the sewage in the final sedimentation zone 30 does not reach the second pollutant set value, the feces and sewage need to be forced to continue to ferment in the final sedimentation zone 30. Therefore, as an example, a second switch 441 (e.g., an on-off valve) can be provided at the fourth inlet 44 to control whether the feces and sewage in the final sedimentation zone 30 enters the pollutant treatment and efficient degradation system 40.

[0051] In some embodiments of the present application, the pollutant treatment and high-efficiency degradation system 40 adopts an S-type treatment method, which specifically includes three parts, namely, a first section, a middle section, and a tail section.

[0052] In the first part, the S-shaped first section 41 is provided with an anaerobic biofilm reactor, which can further efficiently degrade COD, ammonia nitrogen, TP and SS through the metabolism and adsorption of microorganisms on the biofilm.

[0053] In the second part, flocculants are added to the S-shaped middle section 42. Through flocculation and sedimentation, the content of small particles, colloids, and other suspended substances in the wastewater is further reduced, thereby reducing COD and SS concentrations. For example, flocculants include PAC and PFS, and their addition concentration is determined based on the concentration range of COD, ammonia nitrogen, TP, and SS in the wastewater.

[0054] In the third part, a strong oxidant (H2O2, NaClO, etc.) is added to the tail section 43 of the S-type to remove some of the reducing substances in the COD through oxidation. At the same time, the nitrogen in the wastewater is also removed based on the breakpoint chlorination method, so that it can be further removed until the emission standards are met.

[0055] It should be noted that induction probes 421 may be installed in the first and second sections. If, after passing through the first and second sections, the sewage meets the quality standards, i.e., if the sewage reaches the set value for the third pollutant, the sewage is discharged directly without passing through the third section. If, after passing through the first and second sections and remaining there for more than 20 days, the sewage still does not meet the quality standards, i.e., if the sewage does not reach the set value for the third pollutant, the third section is activated.

[0056] In other words, a branch flow channel can be provided between the second and third sections, with a second outlet 45 provided in the branch flow channel. If the sewage meets the quality standards after passing through the first and second sections, it is discharged directly through the second outlet 45. If the sewage remains below the quality standards after more than 20 days of retention in the first and second sections, it is discharged through the third outlet 46 after passing through the third section. Specifically, a third switch 451 can be provided to control whether the sewage is ultimately discharged through the second outlet 45 or the third outlet 46.

[0057] It should be understood that the final excrement wastewater discharged should meet the requirements of the water body around Poyang Lake (COD ≤ 150 mg / L, SS ≤ 50 mg / L, TN ≤ 20 mg / L, NH3-N ≤ 15 mg / L, TP ≤ 2.0 mg / L). For example, the concentrations of COD, SS, TN, NH3-N, TP, etc. can be tested using the sensor probe 421.

[0058] In some embodiments of the present application, during the anaerobic fermentation process, gaseous pollutants such as NH3, H2S, and odor are inevitably produced. Therefore, an underground sewage treatment system can be used to effectively remove conventional pollutants such as C, N, and P from sewage, further address the problem of large fluctuations in "anaerobic fermentation temperature" caused by temperature differences, and achieve efficient anaerobic fermentation and methane production.

[0059] As an example, you can set up a collection pipeline ( Figure 1The system (not shown) collects gases produced during anaerobic fermentation, including methane, NH3, H2S, and odor. Specifically, these gases are absorbed by alkaline solutions such as NaOH to remove acidic odors like CO2 and H2S, achieving a "carbon sequestration" effect. Alkaline odors like NH3 are absorbed by dilute acids. The remaining methane (CH4) can then be used for "liquefied fuel stoves" or centralized combustion power generation in surrounding farmers. This process prevents gas escape and reduces greenhouse gas emissions.

[0060] In other embodiments of the present application, a method for collecting and discharging pig farm manure is also provided, which is applied to the pig farm manure collection and discharge device in the Poyang Lake area provided in any of the above embodiments.

[0061] Specifically, if Figure 2 As shown, the sensor 15, the first COD and SS measuring probe 22, the second COD and SS measuring probe 32, and the sensing probe 421 are respectively connected to the controller 60. The controller 60 is also connected to the first switch 311, the second switch 441, the third switch 451, the first regulating valve 121, the second regulating valve 211, and the solid removal device 16.

[0062] The method comprises the following steps:

[0063] S110: Sensor 15 detects the height of the sediment at the bottom of primary sedimentation area 10. If the height of the sediment is greater than or equal to a first threshold (e.g., 1 meter), solid-state removal device 16 is controlled to be turned on. Otherwise, solid-state removal device 16 is controlled to be turned off. This arrangement allows for timely discharge of solid sediment.

[0064] S130, by adjusting the opening of the first regulating valve 121 and the second regulating valve 211, the retention time of feces in the primary sedimentation area 10 is controlled to reach a first preset time (set as needed, such as 60 days). This setting can ensure the primary removal effect.

[0065] S150, measuring the parameters of the intermediate sedimentation area 20 through the first COD and SS measuring probe 22, if it is detected that the feces reaches the first pollutant setting value (set as needed), control the first switch 311 to be turned on, otherwise, control the first switch 311 to be turned off.

[0066] S170, measure the parameters of the final sedimentation zone 30 through the second COD and SS measuring probe 32. If it is detected that the feces reaches the second pollutant setting value (set as needed), control the second switch 441 to be turned on; otherwise, control the second switch 441 to be turned off.

[0067] S190, measure the parameters of the middle section 42 of the S shape through the induction probe 421, if it is detected that the feces reaches the third pollutant setting value (set as needed), control the feces to flow out of the second outlet 45 by controlling the third switch 451, otherwise, control the feces to flow out of the third outlet 46 by controlling the third switch 451. Such a setting can promote the degradation of pollutants layer by layer. Specifically, due to the influence of climate and feed, especially the large difference between winter and summer in the south, changes in feed intake and feed formula affect the changes in feces content, and the difference is large. However, the embodiment of the present application provides a pig farm feces collection and discharge device in the Poyang Lake area, which is only affected by the feces content at the inlet, and timely adjusts the residence time and degradation plan according to the degradation situation of each area, scientifically and efficiently explains pollutants, and ultimately achieves emission standards.

[0068] In summary, the embodiment of the present application provides a device and method for collecting and discharging manure from pig farms in the Poyang Lake area. An anaerobic method is used to remove COD and SS. The anaerobic depth and time determine the primary removal effect. The amount of sediment in the primary sedimentation area 10 is the largest. A sediment discharge outlet (i.e., the first outlet 13) is provided to discharge solid sediment in time, thereby ensuring the effective manure treatment capacity of the device. The above-mentioned device for collecting and discharging manure from pig farms in the Poyang Lake area can promote the degradation of pollutants layer by layer. Due to the influence of climate and feed, especially the large difference between winter and summer in the south, changes in feed intake and feed formula affect changes in manure content, and the differences are relatively large. However, the device for collecting and discharging manure from pig farms in the Poyang Lake area provided by the embodiment of the present application is only affected by the manure content at the inlet. The residence time and degradation plan are adjusted in time according to the degradation situation of each area. Pollutants are explained scientifically and efficiently, and ultimately the emission standards are achieved. The above-mentioned pig farm manure collection and discharge device in the Poyang Lake area, on the basis of achieving efficient removal of traditional water pollutants such as C, N, and P in pig farm wastewater, overcomes the impact of climate temperature differences on the wastewater treatment system, and properly solves the problem of discharge of pollutants such as NH3, H2S, and odor.

[0069] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A pig farm waste collection and discharge device in the Poyang Lake area, characterized in that: include: Film collection system and pollutant treatment and efficient degradation system; The membrane collection system includes a primary sedimentation area, an intermediate sedimentation area and a final sedimentation area which are arranged in sequence. The intermediate sedimentation area has a height difference with the primary sedimentation area, and the final sedimentation area has a height difference with the intermediate sedimentation area. A first inlet is provided upstream of the primary sedimentation zone, and a first regulating valve is provided at the first inlet position; a second inlet is provided in the intermediate sedimentation zone, and a second regulating valve is provided at the second inlet position; a third inlet is provided in the final sedimentation zone, and a fourth inlet is provided upstream of the pollutant treatment and high-efficiency degradation system; The first inlet and the second inlet are located on the same side of the entire device, and the second inlet, the third inlet and the fourth inlet are staggered; The primary sedimentation zone is provided with a W-shaped flow channel, which is generally inclined toward the secondary sedimentation zone. The head end of the W-shaped flow channel is connected to the first inlet, and the tail end is connected to the second inlet. The bottom of the primary sedimentation area is provided with a number of grids at an angle, and a solid removal device is also provided at the bottom of the primary sedimentation area; The openings of the first regulating valve and the second regulating valve are used to adjust the residence time of feces in the primary sedimentation area.

2. The pig farm waste collection and discharge device in the Poyang Lake area according to claim 1 is characterized in that: A sensor is set in the primary sedimentation area to detect the height of the bottom sediment; when the sensor detects that the bottom sediment height reaches a first threshold, the solid-state removal device is triggered to start to remove the bottom sediment from one side of the device to the other side.

3. The device for collecting and discharging pig manure in the area around Poyang Lake according to claim 2, characterized in that: The pollutant treatment and high-efficiency degradation system adopts an S-type treatment method, which consists of three parts: the first section, the middle section and the tail section; The first part, the S-shaped first section, is equipped with an anaerobic biofilm reactor; In the second part, flocculants are added in the middle section of the S-shape; The third part is to add a strong oxidant to the tail section of the S-type.

4. The device for collecting and discharging pig manure in the area around Poyang Lake according to claim 3 is characterized in that: Add functional bacteria into the intermediate sedimentation area and the final sedimentation area.

5. The device for collecting and discharging pig manure in the area around Poyang Lake according to claim 4, characterized in that: A collection pipe is set up to collect the gases generated during the anaerobic fermentation process of the film collection system, including methane, NH3, H2S, and odor gas.

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