A coffered pond fecal ecological closed-loop processing system with a conical bottom
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU WUHUSIDANG AQUATIC TECHNOLOGY CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-07
AI Technical Summary
[0002]传统甲鱼养殖塘普遍存在以下缺陷：塘底粪便堆积导致水质恶化，需频繁换水，水资源浪费严重；人工清污效率低且扰动养殖生物；粪污直接排放造成环境污染；未实现养分资源化利用
[0014]The beneficial effects of this utility model are as follows: (1) High efficiency in sewage collection: By combining the gradient slope structure of the pond bottom with the design of the central sewage collection tank, the automatic collection of aquaculture waste is realized, reducing the risk of manure accumulation at the bottom of the pond. (2) Dual-mode sewage discharge and precise diversion: It provides two sewage discharge modes: single pump (controlled by a three-way valve) or dual pump independent operation; in the single pump mode, the drainage/sewage discharge path is flexibly switched through a three-way ball valve, reducing equipment costs; in the dual pump mode, the suction pipe and the sewage suction pipe operate separately, realizing the separation and directional transportation of sewage (low concentration) and manure (high concentration). (3) Resource recycling treatment of manure: The three-compartment septic tank performs anaerobic fermentation and sedimentation grading of manure, greatly reducing the organic load; the series-connected duckweed pond purifies the water quality through plant absorption; the screw press performs efficient solid-liquid separation of the sediment in the septic tank, and the manure cake can be used to make organic fertilizer. The filtrate is treated by EM bacteria in the intensified treatment and then flows into the duckweed pond to realize nutrient recycling. (4) Water resource recycling and discharge: The purified water from the duckweed pond is reused in the aquaculture pond, reducing the need for external water replenishment; the sewage treatment unit absorbs the sewage discharged from the pond through the planting area (such as paddy fields, fruit trees, and wetland plants), thereby significantly reducing the system's discharge. (5) Significantly reduced operation and maintenance costs: The modular design integrates the functions of sewage collection, solid-liquid separation, biological purification, and water resource recycling, saving labor costs for cleaning compared to the traditional "aquaculture pond + independent sewage treatment" model; reducing energy consumption and water resource costs for water exchange; and the manure residue can be used to make organic fertilizer, creating additional income. (6) Ecological synergy and efficiency enhancement: The products from the duckweed pond can be used as feed for turtles or poultry, and the economic crops in the planting area achieve "fish-farm symbiosis"; the EM bacteria continuously enhance the biological activity of the system, forming a disease-resistant microecology, which helps maintain good water quality, may reduce the incidence of turtle diseases, and improve the aquaculture environment.
Smart Images
Figure CN224597352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture facilities technology, specifically to an ecological closed-loop treatment system for turtle pond manure with a cone-bottomed sewage collection system, which is particularly suitable for manure treatment and water resource recycling systems in large-scale turtle farming. Background Technology
[0002] Traditional turtle farming ponds generally suffer from the following drawbacks: accumulation of feces at the bottom leads to water quality deterioration, requiring frequent water changes and resulting in significant water waste; manual cleaning is inefficient and disturbs the farmed organisms; direct discharge of feces causes environmental pollution; and nutrient resources are not utilized effectively. Although some farms use independent wastewater treatment equipment, these systems suffer from low integration, relatively high energy consumption, and complex operation and maintenance. Therefore, there is an urgent need to develop a compact, efficient, and ecologically sustainable integrated farming system. Utility Model Content
[0003] The purpose of this invention is to provide an ecological closed-loop treatment system for turtle pond manure with a cone-bottom collection type. Through modular design, it realizes automatic collection, graded treatment and water resource recycling of manure, which significantly improves the quality of the breeding environment and reduces operation and maintenance costs.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: an ecological closed-loop treatment system for turtle pond manure and sewage with a cone-bottom sludge collection system, comprising a pond body, a sludge suction device, a manure and sewage treatment unit, a feces treatment unit, and a sewage treatment unit.
[0005] Pond Body: The pond body includes the pond itself, a collection tank, and a screen. The pond bottom is designed with a gradient slope, with the collection tank located at the lowest point in the center of the pond bottom. A screen is installed at the upper end of the collection tank. The pond adopts a conical bottom structure to achieve self-collection of waste, which is then gathered in the collection tank for convenient subsequent treatment.
[0006] Sewage suction device: The sewage suction device includes a suction pipe and a suction pump. The suction pipe extends from the sewage collection tank to the outside of the pond. One end of the suction pipe passes through the side wall of the sewage collection tank and extends to the bottom of the tank, while the other end is connected to the inlet of the suction pump on the pond bank. It also includes one of the following two optional structures: (a) further including a three-way ball valve, a drain pipe, and a sewage discharge pipe, with the outlet of the suction pump connected to the inlet of the three-way ball valve, and the two outlets of the three-way ball valve connected to the drain pipe and the sewage discharge pipe respectively; or (b) further including a suction pipe, a suction pump, a drain pipe, and a sewage discharge pipe, with one end of the suction pipe connected to the upper middle part of the side wall of the sewage collection tank, and the other end connected to the inlet of the suction pump on the pond bank, with the outlet of the suction pump connected to the drain pipe; and the outlet of the sewage suction pump connected to the sewage discharge pipe. The sewage suction device provides a single-pump or dual-pump dual-mode sewage discharge scheme, enabling dual-path discharge of fecal waste and sewage, facilitating subsequent separate treatment and improving treatment efficiency.
[0007] The wastewater treatment unit includes a three-compartment septic tank, an outlet pipe, a duckweed pond, and a return pipe. The first compartment of the three-compartment septic tank is connected to the sewage pipe, and the upper part of the last compartment is connected to the duckweed pond via the outlet pipe. The duckweed ponds are connected in series, and the final duckweed pond is connected to the pond via the return pipe. The three-compartment septic tank performs primary sedimentation and degradation of wastewater, while the multi-stage duckweed ponds purify ammonia nitrogen, nitrite, and nitrate. The treated aquaculture water flows back to the pond.
[0008] The fecal treatment unit includes a suction pipe, suction valves, a suction pump, a screw press, a filtrate discharge pipe, a return water pipe, and an EM (Effective Microorganisms) purification tank. The suction pipe consists of three branch pipes and one main pipe. Suction valves are installed on the branch pipes. The ends of the three branch pipes extend to the bottom of the three compartments of the three-compartment septic tank. The end of the main pipe is connected to the inlet of the suction pump, and the outlet of the suction pump is connected to the inlet of the screw press. The return water inlet of the screw press is connected to the first compartment of the three-compartment septic tank via a return water pipe. The filtrate outlet of the screw press is connected to the front end of the EM purification tank via a filtrate discharge pipe, and the rear end of the EM purification tank is connected to a duckweed pond. The screw press performs solid-liquid separation on the thick feces settled in the three-compartment septic tank, and the EM bacteria deeply purify the filtrate separated by the screw press.
[0009] Wastewater treatment unit: The wastewater treatment unit includes a planting area connected to a drainage pipe. The planting area utilizes plants for end-of-pipe purification of pond wastewater.
[0010] Furthermore, the slope of the pond bottom near the sewage collection tank is greater than the slope of the surrounding area.
[0011] Furthermore, the slope of the pond bottom near the sewage collection tank area is 15°-25°, preferably 18°, and the slope of the outer area is 8°-15°, preferably 12°.
[0012] Furthermore, the duckweed pond has at least two stages connected in series.
[0013] Furthermore, the planting area is a paddy field, orchard, or artificial wetland.
[0014] The beneficial effects of this utility model are as follows: (1) High efficiency in sewage collection: By combining the gradient slope structure of the pond bottom with the design of the central sewage collection tank, the automatic collection of aquaculture waste is realized, reducing the risk of manure accumulation at the bottom of the pond. (2) Dual-mode sewage discharge and precise diversion: It provides two sewage discharge modes: single pump (controlled by a three-way valve) or dual pump independent operation; in the single pump mode, the drainage / sewage discharge path is flexibly switched through a three-way ball valve, reducing equipment costs; in the dual pump mode, the suction pipe and the sewage suction pipe operate separately, realizing the separation and directional transportation of sewage (low concentration) and manure (high concentration). (3) Resource recycling treatment of manure: The three-compartment septic tank performs anaerobic fermentation and sedimentation grading of manure, greatly reducing the organic load; the series-connected duckweed pond purifies the water quality through plant absorption; the screw press performs efficient solid-liquid separation of the sediment in the septic tank, and the manure cake can be used to make organic fertilizer. The filtrate is treated by EM bacteria in the intensified treatment and then flows into the duckweed pond to realize nutrient recycling. (4) Water resource recycling and discharge: The purified water from the duckweed pond is reused in the aquaculture pond, reducing the need for external water replenishment; the sewage treatment unit absorbs the sewage discharged from the pond through the planting area (such as paddy fields, fruit trees, and wetland plants), thereby significantly reducing the system's discharge. (5) Significantly reduced operation and maintenance costs: The modular design integrates the functions of sewage collection, solid-liquid separation, biological purification, and water resource recycling, saving labor costs for cleaning compared to the traditional "aquaculture pond + independent sewage treatment" model; reducing energy consumption and water resource costs for water exchange; and the manure residue can be used to make organic fertilizer, creating additional income. (6) Ecological synergy and efficiency enhancement: The products from the duckweed pond can be used as feed for turtles or poultry, and the economic crops in the planting area achieve "fish-farm symbiosis"; the EM bacteria continuously enhance the biological activity of the system, forming a disease-resistant microecology, which helps maintain good water quality, may reduce the incidence of turtle diseases, and improve the aquaculture environment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall system structure of this utility model (single pump three-way type).
[0016] Figure 2 This is a cross-sectional view of the structure of this utility model (single pump three-way type).
[0017] Figure 3 This is a schematic diagram of the overall system structure of this utility model (independent dual-pump type).
[0018] Figure 4 This is a cross-sectional view of the structure of this utility model (independent dual-pump type).
[0019] Figure 5 for Figure 1 A magnified view of a portion of the image.
[0020] Figure 6 for Figure 3 A magnified view of a portion of the image.
[0021] The diagram is labeled as follows: 1. Main pond, 11. Pond, 12. Sewage collection pond, 13. Netting; 2. Sewage suction device: 21. Sewage suction pipe, 22. Water suction pipe, 23. Sewage suction pump, 24. Water suction pump, 25. Three-way ball valve, 26. Drainage pipe, 27. Sewage discharge pipe; 3. Manure and sewage treatment unit: 31. Three-compartment septic tank, 32. Water outlet pipe, 33. Duckweed pond, 34. Return pipe; 4. Manure treatment unit: 41. Manure suction pipe, 42. Manure suction valve, 43. Manure suction pump, 44. Screw press, 45. Filtrate discharge pipe, 46. Return water pipe, 47. EM bacteria purification pond; 5. Sewage treatment unit: 51. Planting area. Detailed Implementation
[0022] Example 1: Cone-bottom sludge collection type turtle pond manure ecological closed-loop treatment system (single pump three-way type).
[0023] like Figure 1 , Figure 2 , Figure 5 As shown, an ecological closed-loop treatment system for turtle pond manure and sewage with cone-bottom sludge collection includes a pond body 1, a sludge suction device 2, a manure and sewage treatment unit 3, a feces treatment unit 4, and a sewage treatment unit 5.
[0024] Pond Body 1: The bottom of the pond 11 is designed with a gradient slope. The slope of the bottom of the pond 11 near the sewage collection pond 12 is 18°, and the slope of the outer area is 12°. The entire pond can be covered with a seepage-proof membrane. The sewage collection pond 12 is set at the lowest point in the center of the bottom of the pond 11. A net 13 is set at the upper end of the sewage collection pond 12. The net 13 is made of 304 stainless steel mesh to prevent turtles from entering the sewage collection pond. A water-pushing aerator can be set up around the pond 11 to increase oxygen and assist in sewage collection.
[0025] Sewage suction device 2: One end of the sewage suction pipe 21 passes through the side wall of the sewage collection tank 12 and extends into the bottom of the sewage collection tank 12. The sewage suction pipe 21 is made of PE pipe (DN50). The end of the pipe is 5-10cm away from the bottom of the sewage collection tank. The other end is connected to the inlet of the sewage suction pump 23 on the bank of the pond 11. The outlet of the sewage suction pump 23 is connected to the drain pipe 26 and the sewage discharge pipe 27 respectively through the three-way ball valve 25. The three-way ball valve 25 is electrically controlled.
[0026] Fecal waste treatment unit 3: The first compartment of the three-compartment septic tank 31 is connected to the sewage pipe 27. The volume ratio of the three-compartment septic tank 31 is 2:1:3, and the hydraulic retention time is ≥72 hours. The upper part of the last compartment of the three-compartment septic tank 31 is connected to the duckweed pond 33 through the outlet pipe 32. The multi-stage duckweed ponds 33 (such as 6 stages) are set in series, with a single pond depth of 0.6m. The duckweed in the duckweed pond 33 is regularly harvested to control the duckweed coverage rate to 60-70%. The harvested duckweed can be used to mix with feed to feed turtles in the pond 11, or it can be used to feed poultry. The final duckweed pond 33 is connected to the pond 11 through the return pipe 34.
[0027] Fecal treatment unit 4: The sewage suction pipe 41 consists of three branch pipes and one main pipe. The main pipe is DN75, and the branch pipes are DN50. A sewage suction valve 42 is installed on each branch pipe. The ends of the three branch pipes extend into the bottom of the three compartments of the three-compartment septic tank 31. The end of the main pipe of the sewage suction pipe 41 is connected to the inlet of the sewage pump 43. The outlet of the sewage pump 43 is connected to the inlet of the screw press 44. The return water inlet of the screw press 44 is connected to the first compartment of the three-compartment septic tank 31 via a return water pipe 46. The filtrate outlet of the screw press 44 is connected to the front end of the EM purification tank 47 via a filtrate discharge pipe 45. The EM purification tank 47 is filled with volcanic rock packing and inoculated with EM bacteria (effective viable bacteria count ≥1×10⁻⁶). 8 (CFU / mL, replenished weekly), the rear end of EM purification tank 47 is connected to duckweed tank 33.
[0028] Wastewater treatment unit 5: Planting area 51 is connected to drainage pipe 26. Planting area 51 is used to grow rice or fruit trees. Livestock wastewater can be used for rice flood irrigation or fruit tree drip irrigation.
[0029] Workflow: (a) Fecal waste in the cone-bottom pond 11 is collected in the sludge collection tank 12. (b) The sludge suction device 2 is activated periodically, first pumping the high-concentration sludge settled in the sludge collection tank 12 into the first compartment of the three-compartment septic tank 31; after the settled sludge is removed, the three-way ball valve 25 is switched to pump the sewage in the sludge collection tank 12 into the planting area 51. (c) The supernatant from the last compartment of the three-compartment septic tank 31 flows into the duckweed pond 33 for purification and then flows back to the pond 11. (d) The fecal sludge at the bottom of the three-compartment septic tank 31 is dewatered by the screw press 44 to become organic fertilizer raw material, and the filtrate is purified by the EM bacteria purification tank 47 and then added to the duckweed pond. The return water pipe 46 guides the fecal sludge liquid overflowing from the screw press back to the first compartment of the three-compartment septic tank 31 for secondary treatment.
[0030] Example 2: Cone-bottom sludge collection type turtle pond manure ecological closed-loop treatment system (dual pump independent type).
[0031] like Figure 3 , Figure 4 , Figure 6 As shown, the main body of the pond 1, the manure treatment unit 3, the feces treatment unit 4, and the sewage treatment unit 5 are the same as in Example 1. Suction device 2: One end of the suction pipe 22 is connected to the side wall of the sludge collection tank 12. The suction pipe 22 is a PE pipe (DN50). The inlet is located in the upper middle part of the side wall of the sludge collection tank. The other end is connected to the inlet of the suction pump 24 on the bank of the pond 11. The outlet of the suction pump 24 is connected to the drain pipe 26. One end of the suction pipe 21 passes through the side wall of the sludge collection tank 12 and extends to the bottom of the sludge collection tank 12. The suction pipe 21 is a PE pipe (DN50). The end is 5-10cm from the bottom of the sludge collection tank. The other end is connected to the inlet of the suction pump 23 on the bank of the pond 11. The outlet of the suction pump 23 is connected to the sewage pipe 27.
[0032] Work process: (a), (c), and (d) are the same as in Example 1. (b) The sludge suction device 2 is started at regular intervals, and the sludge suction pump 23 is started to pump the high-concentration sludge settled at the bottom of the sludge collection tank 12 into the first compartment of the three-compartment septic tank 31 through the sludge suction pipe 21 and the sewage discharge pipe 27; the water suction pump 24 is started to pump the sewage in the middle and upper layers of the sludge collection tank 12 into the planting area 51 through the water suction pipe 22 and the drainage pipe 26.
[0033] The above description is only a specific embodiment of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
Claims
1. A closed-loop ecological treatment system for turtle pond manure and wastewater with a cone-bottom sludge collection system, comprising a pond body (1), a sludge suction device (2), a manure and wastewater treatment unit (3), a feces treatment unit (4), and a sewage treatment unit (5), characterized in that:
1. The main body of the pond (1) includes a pond (11), a sewage collection pond (12), and a net (13). The bottom of the pond (11) is designed with a gradient slope. The sewage collection pond (12) is set at the lowest point in the center of the bottom of the pond (11). The net (13) is set at the upper end of the sewage collection pond (12).
2. The suction device (2) includes a suction pipe (21) and a suction pump (23). The suction pipe (21) extends from the sludge collection tank (12) to the outside of the pond (11). One end of the suction pipe (21) passes through the side wall of the sludge collection tank (12) and extends into the bottom of the sludge collection tank (12). The other end is connected to the inlet of the suction pump (23) on the bank of the pond (11). and one of the following two optional structures: (a) also includes a three-way ball valve (25), a drain pipe (26), and a sewage pipe (27). The outlet of the suction pump (23) is connected to the inlet of the three-way ball valve (25), and the two outlets of the three-way ball valve (25) are connected to the drain pipe (26) and the sewage pipe (27) respectively. or (b) also includes a suction pipe (22), a suction pump (24), a drain pipe (26), and a sewage pipe (27). One end of the suction pipe (22) is connected to the upper middle part of the side wall of the sludge collection tank (12), and the other end is connected to the inlet of the suction pump (24) on the bank of the pond (11). The outlet of the suction pump (24) is connected to the drain pipe (26). The outlet of the sewage pump (23) is connected to the sewage pipe (27).
3. The sewage treatment unit (3) includes a three-compartment septic tank (31), an outlet pipe (32), a duckweed pond (33), and a return pipe (34). The first compartment of the three-compartment septic tank (31) is connected to the sewage pipe (27), and the upper part of the last compartment of the three-compartment septic tank (31) is connected to the duckweed pond (33) through the outlet pipe (32). The duckweed ponds (33) are connected in series, and the last duckweed pond (33) is connected to the pond (11) through the return pipe (34). IV. The fecal treatment unit (4) includes a suction pipe (41), a suction valve (42), a suction pump (43), a screw press (44), a filtrate discharge pipe (45), a return water pipe (46), and an EM bacteria purification tank (47). The suction pipe (41) consists of three branch pipes and one main pipe. The branch pipes are equipped with suction valves (42). The ends of the three branch pipes are respectively inserted into the bottom of the three compartments of the three-compartment septic tank (31). The end of the main pipe of the suction pipe (41) is connected to the inlet of the suction pump (43). The outlet of the suction pump (43) is connected to the inlet of the screw press (44). The return water port of the screw press (44) is connected to the first compartment of the three-compartment septic tank (31) through the return water pipe (46). The filtrate outlet of the screw press (44) is connected to the front end of the EM bacteria purification tank (47) through the filtrate discharge pipe (45). The rear end of the EM bacteria purification tank (47) is connected to the duckweed pond (33).
5. The wastewater treatment unit (5) includes a planting area (51), which is connected to a drainage pipe (26).
2. The closed-loop ecological treatment system for turtle pond manure with cone-bottom collection as described in claim 1, characterized in that: The slope of the bottom of the pond (11) near the sewage collection pond (12) is greater than the slope of the surrounding area.
3. The closed-loop ecological treatment system for turtle pond manure with cone-bottom collection as described in claim 2, characterized in that: The slope of the bottom of the pond (11) near the sewage collection pond (12) is 15°-25°, and the slope of the outer area is 8°-15°.
4. The closed-loop ecological treatment system for turtle pond manure with cone-bottom collection as described in claim 1, characterized in that: The duckweed pond (33) consists of at least two stages connected in series.
5. The ecological closed-loop treatment system for turtle pond manure with cone-bottom collection as described in claim 1, characterized in that: The planting area (51) is a paddy field, orchard or artificial wetland.