Wastewater filtering treatment system for aquaculture

Abstract

The utility model relates to a wastewater treatment technology, and discloses a wastewater filtration treatment system for aquaculture, which comprises an aquaculture pond, a coarse filtration structure, a fine filtration structure, a sterilization and disinfection structure, a purified water storage pond and a PLC (Programmable Logic Controller), a hair filter of the coarse filtering structure is connected with an automatic backwashing device, and a first water quality monitoring sensor is arranged on the coarse filtering structure; the fine filtration structure comprises an upper activated carbon adsorption layer, an anthracite filter material layer, a quartz sand filter material layer and a cobblestone filter material layer, a second water quality monitoring sensor is mounted on the fine filtration structure, the fine filtration structure is connected with the sedimentation tank, a third water quality monitoring sensor and a lifting water pump, and the fine filtration structure is connected with an ozone generator. The ozone generator is provided with an aeration head, the aeration head is connected with the purified water storage pool, the ozone generator is provided with a fifth water quality monitoring sensor, the purified water storage pool is provided with a sixth water quality monitoring sensor and a recycling pump, and the recycling pump is connected with the aquaculture pond.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a wastewater filtration and treatment system for aquaculture. Background Technology

[0002] With the rapid development of the aquaculture industry, the discharge of aquaculture wastewater is increasing daily. If this wastewater is discharged directly without effective treatment, it will cause serious pollution to the surrounding aquatic environment and disrupt the ecological balance. At the same time, aquaculture wastewater contains large amounts of organic matter, nitrogen, phosphorus, and other nutrients. Effective treatment and recycling of these nutrients are crucial for the sustainable development of the aquaculture industry. Traditional wastewater treatment devices suffer from poor treatment efficiency, limited filtration precision, and inconvenient maintenance, making it difficult to meet the requirements of modern aquaculture for efficient wastewater treatment and resource recycling. Utility Model Content

[0003] This application provides a wastewater filtration and treatment system for aquaculture, which solves the problems of poor treatment effect, limited filtration accuracy, and inconvenient maintenance of traditional wastewater treatment devices.

[0004] This application provides a wastewater filtration and treatment system for aquaculture, including an aquaculture pond, a coarse filtration structure, a fine filtration structure, a sterilization and disinfection structure and a purified water storage tank connected in sequence, and also includes a PLC controller.

[0005] The coarse filtration structure includes an inlet, a bar filter, and a hair filter. The hair filter is connected to an automatic backwashing device, and a first water quality monitoring sensor is installed at the outlet of the coarse filtration structure.

[0006] The fine filtration structure includes an upper activated carbon adsorption layer and a lower multi-media filtration layer. The multi-media filtration layer consists of an anthracite filter media layer, a quartz sand filter media layer, and a pebble filter media layer from top to bottom. The bottom of the coarse filtration structure and the fine filtration structure are equipped with an automatic backwashing device. A second water quality monitoring sensor is installed at the outlet of the fine filtration structure. The outlet of the fine filtration structure is connected to a sedimentation tank through a pipe. A third water quality monitoring sensor and a booster pump are installed on the pipe.

[0007] The sterilization and disinfection structure, which is an ozone generator, is installed at the outlet of the fine filter structure. An aeration head is connected to the outlet of the ozone generator, and the aeration head is connected to the purified water storage tank. A fifth water quality monitoring sensor is installed at the outlet of the ozone generator. A sixth water quality monitoring sensor and a reuse pump are installed at the outlet of the purified water storage tank. The reuse pump is connected to the aquaculture pond through a pipeline.

[0008] Preferably, the automatic backwashing device includes a flushing water pump, a flushing port, and a sludge collection tank. A sludge pump is installed at the bottom of the sludge collection tank. The sludge pump is connected to a sludge dewatering machine through a pipeline. The sludge dewatering machine is connected to a sludge collection box.

[0009] Preferably, the sedimentation tank is provided with a sludge discharge port at the bottom, which is connected to a sludge return pump through a pipe. The sludge return pump is connected to the front end of the coarse filter structure through a pipe. A fourth water quality monitoring sensor is provided at the outlet of the sedimentation tank, and the outlet of the sedimentation tank is connected to the ozone generator through a pipe.

[0010] Preferably, the top of the fine filter structure is provided with an inspection cover and a transparent observation window.

[0011] Preferably, the backwashing pipe connected to the fine filter structure on the automatic backwashing device is equipped with a flushing water pump and a flow regulating valve.

[0012] Preferably, a level gauge is installed inside the purified water storage tank.

[0013] Preferably, the PLC controller is electrically connected to various water quality monitoring sensors, the flushing water pump, the sludge pump, the lift water pump, the sludge return pump, the ozone generator, the level gauge, the reuse pump, and other equipment.

[0014] As can be seen from the above technical solution, this application provides a wastewater filtration and treatment system for aquaculture. In use, aquaculture wastewater first enters the coarse filtration structure through the inlet, and then passes through the bar screen filter and hair filter in sequence to remove large particulate suspended solids, hair and other impurities from the wastewater. The first water quality monitoring sensor monitors the water quality after coarse filtration in real time. When the impurities on the filter screen surface accumulate to a certain extent, the automatic backwashing device is activated to backwash the filter screen. The impurities and sludge washed off are collected in the sludge collection tank. The sludge pump transports the sludge to the sludge dewatering machine for dewatering treatment. The dewatered sludge is automatically collected in the sludge collection box.

[0015] After coarse filtration, the wastewater enters the fine filtration structure. First, it passes through an activated carbon adsorption layer to adsorb organic matter, odors, and some heavy metal ions from the wastewater. Then, it passes through a multi-media filtration layer for multi-stage filtration to further remove fine particles and impurities from the wastewater. A second water quality monitoring sensor monitors the water quality after fine filtration in real time. A transparent observation window facilitates observation of the internal filtration process. When the filter media of the multi-media filtration layer needs backwashing, a backwashing pump sends water through the backwashing pipe from the backwashing port to backwash the filter media and restore its filtration performance. The backwash water flows back to the front end of the coarse filtration structure. A third water quality monitoring sensor monitors the water quality after fine filtration, and a lift pump lifts the wastewater after fine filtration to a sedimentation tank. A fourth water quality monitoring sensor monitors the water quality after sedimentation in real time. The sludge at the bottom of the sedimentation tank is discharged through the sludge discharge port, and some of the sludge is returned to the front end of the coarse filtration structure through a sludge return pump, realizing the recycling of sludge.

[0016] After sedimentation, the wastewater enters the sterilization and disinfection structure. The ozone generated by the ozone generator is evenly dispersed in the water through the aeration head to sterilize and disinfect the wastewater. The fifth water quality monitoring sensor monitors the water quality after sterilization and disinfection. The sterilized and disinfected water enters the purified water storage tank. The level gauge monitors the water level in real time. The sixth water quality monitoring sensor monitors the water quality of the purified water. The reuse pump transports the purified water back to the aquaculture pond.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, by setting up a multi-stage filtration structure, including a coarse filtration structure and a fine filtration structure, can effectively remove impurities such as suspended solids, hair, and organic matter from aquaculture wastewater. It has high filtration accuracy and good effect, effectively solving the problem of poor filtration effect of traditional devices.

[0019] 2. The hair filter and automatic backwashing device in the coarse filtration structure of this utility model can automatically remove impurities on the filter screen, reduce the amount and frequency of manual maintenance, and automatically collect the sludge after dewatering, which is convenient for subsequent treatment or resource recycling, thus improving the operating efficiency and environmental friendliness of the device.

[0020] 3. The fine filtration structure of this utility model adopts a combination of activated carbon adsorption layer and multi-media filtration layer, which can adsorb organic matter, odor and some heavy metal ions in wastewater, and achieve multi-stage filtration through filter media of different particle sizes, thereby improving filtration accuracy and interception capacity. In addition, the backwashing design is reasonable, which can effectively restore the filtration performance of the filter media and reduce operating costs.

[0021] 4. The sludge return pump of the sedimentation tank designed in this utility model returns part of the sludge to the front end of the coarse filtration mechanism, realizing the recycling of sludge and further improving the wastewater treatment efficiency and resource utilization rate.

[0022] 5. The operating parameters of the sterilization and disinfection structure of this utility model can be automatically adjusted, which can not only ensure the sterilization effect, but also reduce energy consumption and operating costs, and ensure that the exhaust gas emissions meet environmental protection standards.

[0023] 6. This utility model realizes the automated operation and remote monitoring of the entire wastewater filtration and treatment system. Through the connection of the PLC controller with various sensors and equipment, it can monitor water quality changes, equipment operating status and other information in real time, and automatically adjust operating parameters to ensure stable and reliable treatment effect, while reducing the complexity and error rate of manual operation.

[0024] In summary, an aquaculture wastewater filtration system, through its multi-stage filtration structure including coarse and fine filtration, effectively removes impurities such as suspended solids, hair, and organic matter from aquaculture wastewater. It boasts high filtration precision and excellent performance, effectively solving the problem of poor filtration efficiency in traditional devices. The fine filtration structure combines an activated carbon adsorption layer with a multi-media filtration layer, adsorbing organic matter, odors, and some heavy metal ions from the wastewater. Furthermore, it achieves multi-stage filtration through filter media of different particle sizes, improving filtration precision and interception capacity. The rationally designed backwashing mechanism effectively restores the filtration performance of the filter media, reducing operating costs. The sterilization and disinfection structure's operating parameters are automatically adjustable, ensuring sterilization effectiveness while reducing energy consumption and operating costs, and ensuring that exhaust emissions meet environmental standards. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0026] Figure 1 A schematic diagram of a wastewater filtration and treatment system for aquaculture provided by this utility model;

[0027] Figure 2 A schematic diagram of the fine filtration structure of a wastewater filtration system for aquaculture provided by this utility model;

[0028] Figure 3 This is a partial schematic diagram of a wastewater filtration and treatment system for aquaculture provided by this utility model.

[0029] The reference numerals in the detailed embodiments are as follows:

[0030] 1. Inlet; 2. Bar screen filter; 3. Hair filter; 4. Automatic backwashing device; 401. Backwash pump; 402. Backwash port; 403. Sludge collection tank; 5. Sludge pump; 6. Sludge dewatering machine; 7. Sludge collection box; 8. First water quality monitoring sensor; 9. Activated carbon adsorption layer; 10. Multi-media filter layer; 1001. Anthracite filter media layer; 1002. Quartz sand filter media layer; 1003. Pebble filter media layer; 11. Inspection cover; 12. Second water quality monitoring sensor; 3. Transparent observation window; 14. Backwash pipe; 15. Flow regulating valve; 16. Aquaculture pond; 17. PLC controller; 18. Third water quality monitoring sensor; 19. Booster pump; 20. Sedimentation tank; 21. Sludge discharge port; 22. Sludge return pump; 23. Fourth water quality monitoring sensor; 24. Ozone generator; 25. Aeration head; 26. Fifth water quality monitoring sensor; 27. Purified water storage tank; 28. Level gauge; 29. ​​Sixth water quality monitoring sensor; 30. Reuse pump. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] See Figure 1-3 This application discloses a wastewater filtration and treatment system for aquaculture. To address the problems of poor treatment effect, limited filtration accuracy, and inconvenient maintenance in traditional wastewater treatment devices, this system proposes a multi-stage filtration structure, including coarse and fine filtration, which effectively removes impurities such as suspended solids, hair, and organic matter from aquaculture wastewater. It achieves high filtration accuracy and good effect, effectively solving the problem of poor filtration performance in traditional devices. The fine filtration structure combines an activated carbon adsorption layer and a multi-media filtration layer, which can adsorb organic matter, odors, and some heavy metal ions in the wastewater. It also achieves multi-stage filtration through filter media of different particle sizes, improving filtration accuracy and interception capacity. Furthermore, the backwashing design is reasonable, effectively restoring the filtration performance of the filter media and reducing operating costs. The sterilization and disinfection structure's operating parameters can be automatically adjusted, ensuring sterilization effect while reducing energy consumption and operating costs, and ensuring that exhaust emissions meet environmental standards.

[0033] Specifically, a wastewater filtration and treatment system for aquaculture includes an aquaculture pond 16, a coarse filtration structure, a fine filtration structure, a sterilization and disinfection structure, and a purified water storage pond 27 connected in sequence, and also includes a PLC controller 17.

[0034] The coarse filtration structure includes an inlet 1, a bar screen filter 2, and a hair filter 3. Both the bar screen filter 2 and the hair filter 3 are equipped with removable filter screens, and the pore size of the filter screens gradually decreases along the water flow direction. The filter screens of the bar screen filter 2 and the hair filter 3 are made of stainless steel or high-strength engineering plastic, which are corrosion-resistant, high-strength, and have a long service life. The surface of the filter screen is specially treated to reduce the adhesion of impurities and improve the filtration efficiency and backwashing effect. The hair filter is connected to an automatic backwashing device 4. A first water quality monitoring sensor 8 is installed at the outlet of the coarse filtration structure. Aquaculture wastewater first enters the coarse filtration structure through the inlet 1, and then passes through the bar screen filter 2 and the hair filter 3 in sequence to remove large particulate suspended solids, hair, and other impurities from the wastewater. The first water quality monitoring sensor 8 monitors the water quality after coarse filtration in real time.

[0035] The fine filtration structure includes an upper activated carbon adsorption layer 9 and a lower multi-media filter layer 10. The multi-media filter layer 10, from top to bottom, consists of an anthracite filter media layer 1001, a quartz sand filter media layer 1002, and a pebble filter media layer 1003. Both the coarse and fine filtration structures are equipped with an automatic backwashing device 4 at the bottom. The activated carbon adsorption layer 9 uses high-quality activated carbon with a high specific surface area and high adsorption capacity, effectively adsorbing organic matter, odors, and some heavy metal ions from wastewater. The multi-media filter layer 10 is smokeless... The coal filter media, quartz sand filter media, and pebble filter media have particle sizes of 0.5-1.0mm, 0.3-0.8mm, and 2-5mm, respectively. They have good filtration performance and interception capacity, and are easy to backwash and replace. The automatic backwashing device 4 includes a flushing water pump 401, a flushing port 402, and a sludge collection tank 403. A sludge pump 5 is installed at the bottom of the sludge collection tank 403. The sludge pump 5 is connected to a sludge dewatering machine 6 through a pipeline. The sludge dewatering machine 6 is connected to a sludge collection box 7. The automatic backwashing device 4 is connected to the fine filter media. The backwashing pipe 14 connected to the filter structure is equipped with a flushing water pump 401 and a flow regulating valve 15. Multi-stage filtration is achieved through filter media of different particle sizes, which improves filtration accuracy and interception capacity. The backwashing design is reasonable and can effectively restore the filtration performance of the filter media and reduce operating costs. A second water quality monitoring sensor 12 is installed at the outlet of the fine filter structure. The outlet of the fine filter structure is connected to the sedimentation tank 20 through a pipe. A third water quality monitoring sensor 18 and a lift pump 19 are installed on the pipe. The top of the fine filter structure is equipped with an inspection cover 11 and a transparent observation window 13. The second water quality monitoring sensor 12 monitors the water quality after fine filtration in real time. The transparent observation window 13 facilitates observation of the internal filtration. When the filter media of the multi-media filter layer 10 needs backwashing, the flushing water pump 401 sends water from the backwashing port 402 through the backwashing pipe 14 to backwash the filter media and restore its filtration performance. The backwash water flows back to the front end of the coarse filter structure. The third water quality monitoring sensor 18 monitors the water quality after fine filtration.

[0036] The sedimentation tank 20 is equipped with a sludge discharge port 21 at the bottom. The sludge discharge port 21 is connected to the sludge return pump 22 through a pipe. The sludge return pump 22 is connected to the front end of the coarse filter structure through a pipe. A fourth water quality monitoring sensor 23 is installed at the outlet of the sedimentation tank 20. The outlet of the sedimentation tank 20 is connected to the ozone generator 24 through a pipe. The lift pump 19 lifts the finely filtered wastewater to the sedimentation tank 20. The fourth water quality monitoring sensor 23 monitors the water quality after sedimentation in real time. The sludge at the bottom of the sedimentation tank 20 is discharged through the sludge discharge port 21. Some of the sludge is returned to the front end of the coarse filter structure through the sludge return pump 22, realizing the recycling of sludge.

[0037] The outlet of the fine filter structure is equipped with a sterilization and disinfection structure, namely an ozone generator 24. The ozone generator 24 employs advanced discharge tube technology, ensuring stable ozone production and concentration, and features a highly efficient ozone decomposition device to ensure that ozone emissions in the exhaust gas meet environmental standards. An aeration head 25 is connected to the outlet of the ozone generator 24 to evenly disperse ozone in the water. The aeration head 25 is connected to a purified water storage tank 27, which contains a level gauge 28. A fifth water quality monitoring sensor 26 is installed at the outlet of the ozone generator 24. At the outlet of 7, a sixth water quality monitoring sensor 29 and a reuse pump 30 are installed. The reuse pump 30 is connected to the aquaculture pond 16 through a pipeline. The settled wastewater enters the sterilization and disinfection structure. The ozone generated by the ozone generator 24 is evenly dispersed in the water through the aeration head 25 to sterilize and disinfect the wastewater. The fifth water quality monitoring sensor 26 monitors the water quality after sterilization and disinfection. The sterilized and disinfected purified water enters the purified water storage tank 27. The level gauge 28 monitors the water level in real time. The sixth water quality monitoring sensor 29 monitors the water quality of the purified water. The reuse pump 30 transports the purified water back to the aquaculture pond 16.

[0038] The PLC controller 17 is electrically connected to various water quality monitoring sensors, flushing water pump 401, sludge pump 5, lift water pump 19, sludge return pump 22, ozone generator 24, level gauge 28, reuse pump 30, and other equipment. The PLC controller 17 adopts a modular design, has good expandability and compatibility, and can be easily integrated with other equipment or systems to realize automatic control and monitoring of equipment operating status, water quality data, fault alarms, and other information. It can also perform parameter setting and manual control operations.

[0039] As can be seen from the above technical solution, when a wastewater filtration and treatment system for aquaculture is in use, the aquaculture wastewater first enters the coarse filtration structure through the inlet 1, and then passes through the bar screen filter 2 and the hair filter 3 in sequence to remove large particulate suspended solids, hair and other impurities from the wastewater. The first water quality monitoring sensor 8 monitors the water quality after coarse filtration in real time. When the impurities on the filter screen surface accumulate to a certain extent, the automatic backwashing device 4 is activated to backwash the filter screen. The impurities and sludge washed off are collected in the sludge collection tank 403. The sludge pump 5 transports the sludge to the sludge dewatering machine 6 for dewatering treatment. The dewatered sludge is automatically collected in the sludge collection box 7.

[0040] After coarse filtration, the wastewater enters the fine filtration structure. It first passes through the activated carbon adsorption layer 9 to adsorb organic matter, odors, and some heavy metal ions in the wastewater. Then, it passes through the multi-media filter layer 10 for multi-stage filtration to further remove fine particles and impurities in the wastewater. The second water quality monitoring sensor 12 monitors the water quality after fine filtration in real time. The transparent observation window 13 facilitates observation of the internal filtration process. When the filter media of the multi-media filter layer 10 needs backwashing, the backwash water pump 401 sends water through the backwash pipe 14 from the backwash port 402 to backwash the filter media and restore its filtration performance. The backwash water flows back to the front end of the coarse filtration structure. The third water quality monitoring sensor 18 monitors the water quality after fine filtration. The lift water pump 19 lifts the wastewater after fine filtration to the sedimentation tank 20. The fourth water quality monitoring sensor 23 monitors the water quality after sedimentation in real time. The sludge at the bottom of the sedimentation tank 20 is discharged through the sludge discharge port 21. Some of the sludge is returned to the front end of the coarse filtration structure through the sludge return pump 22 to realize the recycling of sludge.

[0041] After sedimentation, the wastewater enters the sterilization and disinfection structure. The ozone generated by the ozone generator 24 is evenly dispersed in the water through the aeration head 25 to sterilize and disinfect the wastewater. The fifth water quality monitoring sensor 26 monitors the water quality after sterilization and disinfection. The sterilized and disinfected purified water enters the purified water storage tank 27. The level gauge 28 monitors the water level in real time. The sixth water quality monitoring sensor 29 monitors the water quality of the purified water. The reuse pump 30 transports the purified water back to the aquaculture pond 16.

[0042] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the applications disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0043] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A wastewater filtration and treatment system for aquaculture, characterized in that: It includes a sequentially connected aquaculture pond (16), a coarse filtration structure, a fine filtration structure, a sterilization and disinfection structure, and a purified water storage pond (27), and also includes a PLC controller (17). The coarse filtration structure includes an inlet (1), a bar screen filter (2) and a hair filter (3). The hair filter is connected to an automatic backwashing device (4). A first water quality monitoring sensor (8) is installed at the outlet of the coarse filtration structure. The fine filtration structure includes an upper activated carbon adsorption layer (9) and a lower multi-media filtration layer (10). The multi-media filtration layer (10) consists of an anthracite filter media layer (1001), a quartz sand filter media layer (1002), and a pebble filter media layer (1003) from top to bottom. An automatic backwashing device (4) is provided at the bottom of the coarse filtration structure and the fine filtration structure. A second water quality monitoring sensor (12) is installed at the outlet of the fine filtration structure. The outlet of the fine filtration structure is connected to the sedimentation tank (20) through a pipe. A third water quality monitoring sensor (18) and a booster pump (19) are provided on the pipe. The sterilization and disinfection structure is installed at the outlet of the fine filter structure. The sterilization and disinfection structure is an ozone generator (24). An aeration head (25) is connected to the outlet of the ozone generator (24). The aeration head (25) is connected to the purified water storage tank (27). A fifth water quality monitoring sensor (26) is installed at the outlet of the ozone generator (24). A sixth water quality monitoring sensor (29) and a reuse pump (30) are installed at the outlet of the purified water storage tank (27). The reuse pump (30) is connected to the aquaculture pond (16) through a pipeline.

2. The wastewater filtration and treatment system for aquaculture according to claim 1, characterized in that: The automatic backwashing device (4) includes a flushing water pump (401), a flushing port (402) and a sludge collection tank (403). A sludge pump (5) is installed at the bottom of the sludge collection tank (403). The sludge pump (5) is connected to a sludge dewatering machine (6) through a pipe. The sludge dewatering machine (6) is connected to a sludge collection box (7).

3. The wastewater filtration and treatment system for aquaculture according to claim 2, characterized in that: The sedimentation tank (20) is provided with a sludge discharge port (21) at the bottom. The sludge discharge port (21) is connected to the sludge return pump (22) through a pipe. The sludge return pump (22) is connected to the front end of the coarse filter structure through a pipe. A fourth water quality monitoring sensor (23) is provided at the outlet of the sedimentation tank (20). The outlet of the sedimentation tank (20) is connected to the ozone generator (24) through a pipe.

4. The wastewater filtration and treatment system for aquaculture according to claim 3, characterized in that: The top of the fine filter structure is provided with an inspection cover (11) and a transparent observation window (13).

5. The wastewater filtration and treatment system for aquaculture according to claim 4, characterized in that: The automatic backwashing device (4) is connected to the fine filter structure via a backwashing pipe (14) equipped with a flushing water pump (401) and a flow regulating valve (15).

6. The wastewater filtration and treatment system for aquaculture according to claim 5, characterized in that: The purified water storage tank (27) is equipped with a level gauge (28).

7. The wastewater filtration and treatment system for aquaculture according to claim 6, characterized in that: The PLC controller (17) is electrically connected to each water quality monitoring sensor, the flushing water pump (401), the sludge pump (5), the lift water pump (19), the sludge return pump (22), the ozone generator (24), the level gauge (28), and the reuse pump (30).

Images