Industrial aquaculture water environment on-line monitoring station

Abstract

The utility model belongs to the field of water environment monitoring, and relates to a factory aquaculture water environment on-line monitoring station, which comprises a water sampling unit, a pretreatment unit, a detection unit and a floating platform, a rolling motor (2) and an air pump (5) are fixed on the floating platform (1), the rolling motor (2) is connected with a sinking block (3), a depth sensor is fixed on the sinking block (3), the air pump (5) is connected with a cross-shaped air distribution pipe (4), and the cross-shaped air distribution pipe (4) is connected with the detection unit. A five-way reversing valve is fixed to the center of the cross-shaped gas distributing pipe (4), and the cross-shaped gas distributing pipe (4) is fixed to the lower surface of the floating platform (1) and immersed in water. According to the utility model, water samples at different positions and at different depths in a water collection environment can be collected, and different pretreatment processes are adopted according to different monitoring parameters at different depths, so that the influence of excessive pretreatment on the accuracy of a monitoring result is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of aquaculture water environment monitoring, specifically involving an online monitoring station for the water environment of factory-scale aquaculture. Background Technology

[0002] The online monitoring station for the water environment of factory-scale aquaculture is a comprehensive online automatic monitoring system that uses online automatic analysis instruments as its core and modern sensor technology, automatic control technology, computer application technology, dedicated system management software, and communication networks. It can monitor the water quality parameters of the target water area around the clock and automatically, analyze and process the data, and generate analysis reports online, providing data support for environmental protection management departments and aquaculture enterprises to monitor changes in water environmental factors and water pollution in real time.

[0003] Patent CN112730772A discloses an online monitoring station for the aquatic environment in factory-scale aquaculture. This station can collect water samples at depth and incorporates filtration and rinsing devices to keep the sensors clean, ensuring high accuracy even after prolonged use. Furthermore, the sampling device in this invention can determine whether to retain samples based on water quality test results, providing a basis for subsequent analysis and problem-solving.

[0004] While the above method can achieve sampling at different depths, it is difficult to grasp the water quality at other locations and different depths. Furthermore, the impurity content of water at different depths varies, resulting in different levels of interference with the sensors. Therefore, different water sample pretreatment methods should be adopted. Summary of the Invention

[0005] To address the problems in the background technology, this utility model provides an online monitoring station for the water environment in factory-scale aquaculture, capable of collecting water samples from different locations and depths in the environment. Furthermore, the water samples can be pretreated in different ways depending on their depth.

[0006] The technical solution of this utility model is:

[0007] An online monitoring station for the water environment of factory-scale aquaculture includes a water sampling unit, a pretreatment unit, a detection unit, and a main control unit. The station is characterized by the following: a floating platform 1 is further included, on which a winding motor 2 and an air pump 5 are fixed. The winding motor 2 is connected to a sinking block 3, and a depth sensor is fixed to the sinking block 3. The air pump 5 is connected to a cross-shaped air distribution pipe 4, and a five-way reversing valve is fixed at the center of the cross-shaped air distribution pipe 4. The cross-shaped air distribution pipe 4 is fixed to the lower surface of the floating platform 1 and submerged in water.

[0008] By outputting gas to one or two of the cross-shaped air distribution pipes 4 through the air pump 5, thrust can be generated in different directions in the water, propelling the floating platform 1 to move in different directions, thereby collecting water samples from different locations in the aquatic environment; at different locations, through the cooperation of the winding motor 2, the sinking block 3 and the depth sensor, the sinking block 3 can be lowered to any height, thereby collecting water samples from different depths.

[0009] In one embodiment of this utility model, the water sampling unit includes a water sampling head, a water sampling pipe, and a water sampling pump 6. The water sampling head is fixed on the sinking block 3, and the water sampling head is connected to the water sampling pump 6 through the water sampling pipe.

[0010] In one embodiment of this utility model, the pretreatment unit includes a first filter 7, a first pretreatment module 9, a second pretreatment module 10, and a sedimentation tank 8. The water pump 6 is connected to the sedimentation tank 8 and the detection unit through the first filter 7, respectively. The sedimentation tank 8 is connected to the detection unit through the first pretreatment module 9 and the second pretreatment module 10, respectively. The sedimentation tank 8 is also directly connected to the detection unit.

[0011] As one embodiment of this utility model, the detection unit includes a dissolved oxygen sensor, a pH value detection sensor, a salinity measurement sensor, an ammonia nitrogen measurement sensor, a total phosphorus measurement sensor, a turbidity measurement sensor, etc. To ensure the accuracy of different sensor measurements, different pretreatments are required for the water sample.

[0012] As one embodiment of this utility model, the dissolved oxygen sensor, pH value detection sensor, salinity measurement sensor, and turbidity measurement sensor only require simple coarse filtration of the water sample, that is, after coarse filtration through the first filter 7, it can be sent to the detection unit for detection.

[0013] As one embodiment of this utility model, a temperature measuring sensor is fixed on the sinking block 3.

[0014] In one embodiment of this invention, a first pretreatment module pretreats the water sample to improve the accuracy of the ammonia nitrogen measurement sensor. The first pretreatment module includes a first reaction vessel, a first dosing unit, and a second filter. The water sample drawn from the sedimentation tank 8 enters the first reaction vessel. The first dosing unit adds a masking agent to the first reaction vessel. The second filter filters the water sample after the masking agent has been added, and then the sample is sent to the ammonia nitrogen measurement sensor for detection.

[0015] In one embodiment of this invention, the second pretreatment module pretreats the water sample to improve the accuracy of the total phosphorus measurement sensor. The second pretreatment module includes a second reaction vessel and a second dosing unit. The water sample drawn from the sedimentation tank 8 enters the second reaction vessel, and the second dosing unit adds an acidic solution such as concentrated sulfuric acid or hydrochloric acid to the second reaction vessel. The reaction generates a measurable compound, which is then delivered to the total phosphorus measurement sensor for detection.

[0016] As one embodiment of this utility model, a portion of the water sample collected by the water pump 6 is sent directly to the dissolved oxygen sensor, pH value detection sensor, salinity measurement sensor, and turbidity measurement sensor after passing through the first filter 7; a portion is sent to the ammonia nitrogen measurement sensor for detection through the first pretreatment module 9; and a portion is sent to the total phosphorus measurement sensor for detection through the second pretreatment module 10.

[0017] The water sample collected by the water pump 6 is further clarified by sedimentation in the sedimentation tank 8. Part of the sample is sent to the ammonia nitrogen measurement sensor for detection via the first pretreatment module 9, part of the sample is sent to the total phosphorus measurement sensor via the second pretreatment module 10, and part of the sample is sent to the dissolved oxygen sensor, pH value detection sensor, salinity measurement sensor, and turbidity measurement sensor.

[0018] As one embodiment of this utility model, the surface of the water intake head and / or water intake pipe is coated with an anti-biofouling coating to delay the occurrence of biofouling problems and reduce the frequency of maintenance.

[0019] As one embodiment of this utility model, the system pipeline cleaning adopts a compressed air backwashing unit to prevent pipeline blockage, biological adhesion, and other situations that may affect the monitoring effect.

[0020] In one embodiment of this utility model, the detection unit is connected to the waste liquid collection unit.

[0021] As one embodiment of this utility model, a video monitoring unit is also provided on the floating platform 1 and / or the sinking block 3.

[0022] In one embodiment of this invention, the pretreatment unit and the detection unit are housed within a cabinet. A constant-temperature refrigerator is also installed within the cabinet for storing perishable reagents. An access control system is installed on the cabinet, which can effectively manage all operators and allows for remote control.

[0023] The advantages of this invention are: it can collect water samples at different locations and depths in the water collection environment, and adopt different pretreatment processes for different monitoring parameters at different depths to prevent excessive pretreatment from affecting the accuracy of the monitoring results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the floating platform and its auxiliary structures of this utility model;

[0025] Figure 2 This is a schematic diagram of the preprocessing unit of this utility model;

[0026] Figure 3 This is the circuit control diagram of this utility model.

[0027] The components include: 1. Floating platform; 2. Winding motor; 3. Sinking block; 4. Cross-shaped air distribution pipe; 5. Air pump; 6. Water pump; 7. First filter; 8. Sedimentation tank; 9. First pretreatment module; 10. Second pretreatment module. Detailed Implementation

[0028] like Figure 1-3 An online monitoring station for the water environment of factory-scale aquaculture includes a water sampling unit, a pretreatment unit, a detection unit, and a main control unit. The station is characterized by the following: it further includes a floating platform 1, on which a winding motor 2 and an air pump 5 are fixed. The winding motor 2 is connected to a sinking block 3, and a depth sensor is fixed to the sinking block 3. The air pump 5 is connected to a cross-shaped air distribution pipe 4, and a five-way reversing valve is fixed at the center of the cross-shaped air distribution pipe 4. The cross-shaped air distribution pipe 4 is fixed to the lower surface of the floating platform 1 and submerged in water.

[0029] By outputting gas to one or two of the cross-shaped air distribution pipes 4 through the air pump 5, thrust can be generated in different directions in the water, propelling the floating platform 1 to move in different directions, thereby collecting water samples from different locations in the aquatic environment; at different locations, through the cooperation of the winding motor 2, the sinking block 3 and the depth sensor, the sinking block 3 can be lowered to any height, thereby collecting water samples from different depths.

[0030] The water sampling unit includes a water sampling head, a water sampling pipe, and a water sampling pump 6. The water sampling head is fixed on the sinking block 3 and is connected to the water sampling pump 6 through the water sampling pipe.

[0031] The pretreatment unit includes a first filter 7, a first pretreatment module 9, a second pretreatment module 10, and a sedimentation tank 8. The water pump 6 is connected to the sedimentation tank 8 and the detection unit through the first filter 7, respectively. The sedimentation tank 8 is connected to the detection unit through the first pretreatment module 9 and the second pretreatment module 10, respectively.

[0032] The detection unit includes various sensors, such as dissolved oxygen sensors, pH sensors, salinity sensors, ammonia nitrogen sensors, total phosphorus sensors, and turbidity sensors. To ensure the accuracy of different sensors, different pretreatments are required for the water samples.

[0033] Dissolved oxygen sensors are primarily used to measure the dissolved oxygen content in water samples. Typically, simple filtration to remove suspended solids is sufficient; no complex pretreatment is required.

[0034] A pH sensor is used to measure the acidity or alkalinity of a water sample. During pretreatment, the water sample needs to be simply filtered to avoid measurement errors.

[0035] Salinity sensors are used to measure the salt content in water samples. During pretreatment, the water sample can be simply filtered.

[0036] Turbidity sensors are used to measure the suspended solids content in water samples. During pretreatment, the removal of suspended solids from the water sample should be avoided, as this will directly affect the turbidity measurement results. Typically, simple filtration of the water sample to remove large particulate impurities is sufficient.

[0037] Therefore, the dissolved oxygen sensor, pH value sensor, salinity measurement sensor, and turbidity measurement sensor only require simple coarse filtration of the water sample, that is, after coarse filtration through the first filter 7, it can be sent to the detection unit for detection.

[0038] The temperature measurement sensor is used to measure the temperature of the water sample. Since temperature is an important factor that directly affects a variety of water quality parameters, it is necessary to measure the original temperature of the water sample. Therefore, the temperature measurement sensor is fixed on the sinking block 3.

[0039] Ammonia nitrogen measurement sensors are used to measure the ammonia nitrogen content in water samples. During pretreatment, interfering substances need to be removed, while excessive pretreatment should be avoided as it may lead to ammonia nitrogen loss. If metal ions are present in the water sample, an appropriate amount of masking agent, such as potassium sodium tartrate, can be added to form complexes with calcium, magnesium, and other metal ions in the water, thereby preventing them from interfering with the measurement results. Therefore, a first pretreatment module is designed to pretreat the water sample to improve the accuracy of the ammonia nitrogen measurement sensor. The first pretreatment module includes a first reaction vessel, a first dosing unit, and a second filter. The water sample drawn from the sedimentation tank 8 enters the first reaction vessel. The first dosing unit adds the masking agent to the first reaction vessel, and the second filter filters the water sample after the masking agent has been added.

[0040] The total phosphorus measurement sensor is used to measure the total phosphorus content in water samples. For total phosphorus measurement, the main purpose of water sample pretreatment is to remove suspended solids and sediments, and to release phosphorus from the water sample. Suspended solids and sediments can be removed by filtration or centrifugation. Filtration typically uses filter paper or membranes; centrifugation uses a centrifuge to separate suspended solids and sediments from the water sample. To release phosphorus from the water sample, acid digestion is required, generally using acidic solutions such as concentrated sulfuric acid or hydrochloric acid, and digestion is carried out in a well-ventilated environment. Therefore, a second pretreatment module is designed to pretreatment the water sample to improve the accuracy of the total phosphorus measurement sensor. The second pretreatment module includes a second reaction vessel and a second dosing unit. The water sample drawn from the sedimentation tank 8 enters the second reaction vessel, and the second dosing unit adds acidic solutions such as concentrated sulfuric acid or hydrochloric acid to the second reaction vessel. The reaction produces measurable compounds, which are then delivered to the total phosphorus measurement sensor for detection.

[0041] As one embodiment of this utility model, the surface of the water intake head and / or water intake pipe is coated with an anti-biofouling coating to delay the occurrence of biofouling problems and reduce the frequency of maintenance.

[0042] In one embodiment of this invention, the pretreatment unit and the detection unit are housed within a cabinet. A constant-temperature refrigerator is also installed within the cabinet for storing perishable reagents. An access control system is installed on the cabinet, which can effectively manage all operators and allows for remote control.

[0043] As one embodiment of this utility model, the system pipeline cleaning adopts a compressed air backwashing unit to prevent pipeline blockage, biological adhesion, and other situations that may affect the monitoring effect.

[0044] As one embodiment of this utility model, it also includes a waste liquid collection unit connected to the detection unit.

[0045] As one embodiment of this utility model, a video monitoring unit is also installed on the floating platform 1 and / or the sinking block 3. This unit effectively tracks the behavior and habits of underwater fish, providing original video data for scientific aquaculture; on the other hand, it effectively manages aquaculture operations and the environment, avoiding production accidents and reducing aquaculture risks.

[0046] The principle of this invention is that the surface control unit is connected to the main control unit via a communication unit. The surface control unit is sealed and fixed on the floating platform 1. Data measured by the depth sensor and temperature sensor is sent to the surface control unit. The surface control unit also controls the air pump 5 and the five-way reversing valve, thereby controlling the movement of the floating platform 1. The surface control unit also controls the movement of the winding motor, adjusting the sampling depth based on the depth feedback from the depth sensor. The surface control unit is also connected to the water sampling pump; once the submerged block reaches the designated depth, the water sampling pump is activated for sampling. The communication unit can be wired or wirelessly connected. The main control unit automatically extracts water samples for testing according to the set detection process, and collects and processes information such as monitoring data and equipment status. Specifically, the main control unit determines what kind of pretreatment the water sample should undergo based on the depth data and location information sent by the water control unit, obtained indirectly through air pump operation data or through infrared measurement. For deeper water samples, there are more sedimented impurities, so these water samples need to be coarsely filtered and precipitated before being sent to the detection unit to ensure that the water sample meets the detection requirements. For water samples at other depths, only coarse filtration is required. Part of the sample is sent to the dissolved oxygen sensor, pH value sensor, salinity sensor, and turbidity sensor, while the rest is sent to the ammonia nitrogen sensor and total phosphorus sensor after pretreatment by the first pretreatment module 9 and the second pretreatment module 10, respectively.

Claims

1. An online monitoring station for the water environment of factory-scale aquaculture, comprising a water sampling unit, a pretreatment unit, and a detection unit, characterized in that: The online monitoring station for the water environment of the factory-scale aquaculture also includes a floating platform (1). A winding motor (2) and an air pump (5) are fixed on the floating platform (1). The winding motor (2) is connected to a sinking block (3). A depth sensor is fixed on the sinking block (3). The air pump (5) is connected to a cross-shaped air distribution pipe (4). A five-way reversing valve is fixed at the center of the cross-shaped air distribution pipe (4). The cross-shaped air distribution pipe (4) is fixed to the lower surface of the floating platform (1) and submerged in water.

2. The online monitoring station for the water environment of factory-scale aquaculture according to claim 1, characterized in that: The water sampling unit includes a water sampling head, a water sampling pipe and a water sampling pump (6). The water sampling head is fixed on the sinking block (3) and the water sampling head is connected to the water sampling pipe and the water sampling pump (6).

3. The online monitoring station for the aquatic environment of factory-scale aquaculture according to claim 1 or 2, characterized in that: The detection unit includes a dissolved oxygen sensor, a pH sensor, a salinity sensor, an ammonia nitrogen sensor, a total phosphorus sensor, and a turbidity sensor.

4. The online monitoring station for the water environment of factory-scale aquaculture according to claim 3, characterized in that: The pretreatment unit includes a first filter (7), a first pretreatment module (9), a second pretreatment module (10), and a sedimentation tank (8). The water pump (6) is connected to the sedimentation tank (8) and the detection unit through the first filter (7). The sedimentation tank (8) is connected to the detection unit through the first pretreatment module (9) and the second pretreatment module (10). The sedimentation tank (8) is also directly connected to the detection unit.

5. The online monitoring station for the water environment of factory-scale aquaculture according to claim 4, characterized in that: The first pretreatment module includes a first reaction container, a first dosing unit, and a second filter. Water samples drawn from the sedimentation tank (8) enter the first reaction container. The first dosing unit is used to add a masking agent to the first reaction container. The second filter is used to filter the water sample after the masking agent has been added and then transport it to the ammonia nitrogen measuring sensor for detection.

6. The online monitoring station for the water environment of factory-scale aquaculture according to claim 5, characterized in that: The second pretreatment module includes a second reaction vessel and a second dosing unit. Water samples drawn from the sedimentation tank (8) enter the second reaction vessel. The second dosing unit is used to add an acidic solution to the second reaction vessel. The reaction generates a measurable compound, which is then transported to the total phosphorus measurement sensor for detection.

7. The online monitoring station for water environment in factory-scale aquaculture according to claim 6, characterized in that: The water sample collected by the water pump (6) is sent directly to the dissolved oxygen sensor, pH value detection sensor, salinity measurement sensor and turbidity measurement sensor after passing through the first filter (7), a portion is sent to the ammonia nitrogen measurement sensor for detection through the first pretreatment module (9), and a portion is sent to the total phosphorus measurement sensor for detection through the second pretreatment module (10). The water sample collected by the water pump (6) is also settled and clarified in the sedimentation tank (8). Part of it is sent to the ammonia nitrogen measurement sensor for detection through the first pretreatment module (9), part of it is sent to the total phosphorus measurement sensor for detection through the second pretreatment module (10), and part of it is sent to the dissolved oxygen sensor, pH value detection sensor, salinity measurement sensor and turbidity measurement sensor.

8. The online monitoring station for the water environment of factory-scale aquaculture according to claim 7, characterized in that: A temperature measuring sensor is fixed on the sinking block (3).

9. The online monitoring station for the water environment of factory-scale aquaculture according to claim 8, characterized in that: A video monitoring unit is also installed on the floating platform (1) and / or the sinking block (3).

10. The online monitoring station for the water environment of factory-scale aquaculture according to claim 9, characterized in that: The surface of the water intake head and / or water intake pipe is coated with an anti-bioadhesion coating.

11. The online monitoring station for the water environment of factory-scale aquaculture according to claim 10, characterized in that: The detection unit is also connected to the waste liquid collection unit.

12. The online monitoring station for water environment in factory-scale aquaculture according to claim 11, characterized in that: The pretreatment unit and the detection unit are located inside the box, which also contains a constant temperature refrigerator for storing perishable reagents.

13. The online monitoring station for the water environment of factory-scale aquaculture according to claim 12, characterized in that: The enclosure is equipped with an access control system.

14. The online monitoring station for the water environment of factory-scale aquaculture according to claim 13, characterized in that: The online monitoring station for the water environment of factory-scale aquaculture also includes a compressed air backwashing unit connected to the system pipeline.

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