Wastewater toxicity testing device

Abstract

The utility model provides a wastewater toxicity testing device which comprises a water inlet tank, a detection tank, an oxygen source and a controller, the water inlet end of the detection tank is connected with the water inlet tank through a water inlet pipe network, and the detection tank is further connected with the oxygen source through a gas inlet pipe network; the detection pool comprises at least two reaction pool bodies which are sequentially arranged in a stacked mode, and the top and the bottom of each reaction pool body are movably connected with a movable cover plate and a supporting base respectively; detection assemblies are independently arranged in the at least two reaction tank bodies, the detection assemblies are electrically connected with the controller, a filtering assembly is further arranged in the supporting base, the water inlet end of the filtering assembly is connected with the water inlet tank through the water inlet pipe network, and the water outlet end of the filtering assembly is connected with the reaction tank bodies through the water outlet pipe network. According to the utility model, the space utilization rate is effectively improved, and the accuracy of detection results is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment and relates to a wastewater toxicity testing device. Background Art

[0002] The toxicity detection of wastewater is an important means to evaluate the impact of wastewater on the environment and human health. Especially for some wastewater with complex components and containing low-concentration, highly toxic pollutants, it is very important to conduct wastewater toxicity detection. Traditional indicators such as chemical oxygen demand, total nitrogen, and total phosphorus cannot accurately evaluate its harmfulness, and detection methods such as spectrophotometry, chromatography, and mass spectrometry are difficult to accurately determine the concentration of specific pollutants in a complex environment. Therefore, it can only be evaluated through toxicity testing.

[0003] Using fish to evaluate the toxicity of wastewater is a very important toxicity evaluation method. For example, a device for measuring the acute toxicity of substances to freshwater fish disclosed in CN206725548U includes a water inlet and outlet unit, a test unit for testing the dissolved oxygen and pH value of the water body, and a control unit. The water inlet and outlet unit is connected to the test unit; the test unit includes a test reaction tank, an on-line dissolved oxygen detector, and an on-line pH detector, and the on-line dissolved oxygen detector and the on-line pH detector are connected to the control unit; the control unit includes a power switch control, a temperature controller, an on-line monitoring digital display, and a control panel. The on-line dissolved oxygen detector and the on-line pH detector are connected to the on-line monitoring digital display and the control panel, and the temperature controller is connected to the heating tube. However, there are problems such as the feces of fish during operation may affect the experimental results, and the use of aeration equipment may affect the test results of volatile pollutants.

[0004] Therefore, it is necessary to provide a wastewater testing device that can eliminate the above adverse effects. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a wastewater toxicity testing device, which effectively improves the space utilization rate, does not require aeration operation, can filter suspended substances such as fish feces, and improves the accuracy of the detection results.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The present utility model provides a wastewater toxicity testing device, which includes a water inlet tank, a detection tank, an oxygen source and a controller. The water inlet end of the detection tank is connected to the water inlet tank through a water inlet pipe network, and the detection tank is also connected to the oxygen source through an air inlet pipe network. The detection tank includes at least two reaction cell bodies stacked in sequence. An activity cover plate and a support base are movably connected to the top and bottom of the reaction cell body respectively. Detection components are independently arranged in at least two of the reaction cell bodies, and the detection components are electrically connected to the controller. A filtering component is further arranged in the support base. The water inlet end of the filtering component is connected to the water inlet tank through the water inlet pipe network, and the water outlet end of the filtering component is connected to the reaction cell body through a water outlet pipe network.

[0008] In the present utility model, the reaction cell body adopted by the detection tank is of a fully sealed structure, which ensures the accuracy of the detection results of volatile pollutants. And with a longitudinal stacking design, it effectively improves the space utilization efficiency, and can also use its own gravity to compact the joints, improving the sealing effect of the detection tank. The oxygen consumed by organisms in the reaction cell body is supplemented through the oxygen source to maintain the oxygen concentration in the reaction cell body. The arranged filtering component can filter and intercept suspended substances without opening the reaction cell body, further improving the accuracy of the experimental results.

[0009] In the present utility model, the activity cover plate is opened to add test fish, and the reaction cell body is cleaned. During application, the wastewater to be detected in the water inlet tank is sent into the reaction cell body, so that the water depth in the reaction cell body does not exceed 75% of the total height of the reaction cell body. Then, test fish such as fish are added to the reaction cell body, and the toxicity of the wastewater is detected by observing the situation of the test fish.

[0010] It should be noted that a circulating component for pumping water is further arranged in the support base of the present utility model, which is configured to provide power for the filtering component. The structure and setting method of the circulating component in the present utility model are not specifically limited, and any circulating component well-known to those skilled in the art can be adopted, as long as it can realize the same or similar functions, it can be used in the present utility model.

[0011] It should also be noted that the layout position of the water inlet tank in the present utility model is not specifically limited. The water inlet tank and the detection tank can be of an integrated structure or can be separately arranged.

[0012] As a preferred technical solution of the present utility model, a plurality of clamping grooves are arranged on the surface of the support base along the circumferential direction, and a plurality of limiting protrusions are arranged on the surface of the reaction cell body along the circumferential direction, and part of the limiting protrusions are located in the clamping grooves.

[0013] In the present utility model, adjacent reaction cell bodies are longitudinally stacked, and the reaction cell bodies are connected to the support base. The gravity of the reaction cell bodies is utilized to compact the joints, improving the sealing effect of the detection cell.

[0014] As a preferred technical solution of the present utility model, the depth of the card slot is greater than the height of the limit protrusion, and a sealing component is further arranged in the card slot. The sealing component is used to block the card slot.

[0015] The detection cell of the present utility model is integrally designed to be sealed. After connecting the protrusion and the card slot, the sealing component is utilized to ensure no gap between the reaction cell body and the support base.

[0016] As a preferred technical solution of the present utility model, a purification tank body is also suspended in the reaction cell body. The purification tank body is communicated with the reaction cell body, and an absorption liquid for purifying air is contained in the purification tank body.

[0017] In the present utility model, the purification tank body is communicated with the reaction cell body, allowing gas phase to flow through. The filled absorption liquid is used to absorb the carbon dioxide generated by the respiration of the test fish to ensure the pressure stability in the reaction cell body.

[0018] As a preferred technical solution of the present utility model, the detection assembly includes a pressure sensing component and a multi-functional sensing component. The pressure sensing component is used to detect the pressure in the reaction cell body, and the multi-functional sensing component is used to detect the waste water temperature, pH, and dissolved oxygen concentration. The pressure sensing component and the multi-functional sensing component are independently connected to the controller through connecting wires, and a hollow protective shell is also sleeved on the outer periphery of the multi-functional sensing component.

[0019] The present utility model provides oxygen to the reaction cell body by using an oxygen source, and the pressure in the reaction cell body is detected in real time through the pressure sensing component to ensure the pressure in the cell body; the temperature, pH, dissolved oxygen and other data of the waste water in the reaction cell body are detected by using the multi-functional sensing component to ensure that the environment in the reaction cell body is suitable. The controller is used to read, display, and store data.

[0020] As a preferred technical solution of the present utility model, a heating component is further arranged in the support base, and the heating component is also electrically connected to the controller.

[0021] The heating component of the present utility model is used to heat the reaction cell body to ensure that the environmental temperature in the reaction cell body is suitable for the growth of the test fish.

[0022] As a preferred technical solution of the present utility model, an oxygen regulator is further arranged on the intake pipe network, and the oxygen regulator is electrically connected to the controller.

[0023] The oxygen regulator in the present utility model is used to regulate the oxygen introduced from the oxygen source and can also adjust the amount of oxygen introduced.

[0024] As a preferred technical solution of the present utility model, the ratio of the height of the reaction tank body to the bottom area of the reaction tank body < 0.2 dm -1 .

[0025] The present utility model controls the ratio of the height of the reaction tank to the bottom area of the reaction tank body, as well as the water depth of the wastewater in the reaction tank body, to ensure that the ratio of the water volume to the gas-liquid interface meets the requirements.

[0026] As a preferred technical solution of the present utility model, an auxiliary handle is further provided on the side wall of the reaction tank body.

[0027] An auxiliary handle is provided on the reaction tank body of the present utility model for the convenience of staff handling.

[0028] As a preferred technical solution of the present utility model, the water inlet pipe network includes a water inlet main pipe, at least one water inlet pipe and at least one water inlet branch pipe. The two ends of the water inlet main pipe are respectively connected to the water inlet tank and the water inlet pipe. The water inlet pipe is connected to the filtration component through the water inlet branch pipe. A first driving pump is provided on the water inlet main pipe or the water inlet pipe.

[0029] The water outlet pipe network includes at least one water outlet pipe and at least one water outlet branch pipe. The water outlet pipe is connected to the reaction tank body. The water outlet pipe is connected to the filtration component through the water outlet branch pipe. A second driving pump is provided on the water outlet pipe.

[0030] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0031] A wastewater toxicity testing device provided by the present utility model. The reaction tank body used in the detection tank is of a fully sealed structure, which ensures the accuracy of the experimental results for volatile pollutants. And it adopts a longitudinal stacking design, effectively improving the space utilization efficiency. It can also use its own gravity to compact the connection part, improving the sealing effect of the detection tank. And the oxygen consumed by organisms in the reaction tank body is supplemented through the oxygen source to maintain the oxygen concentration in the reaction tank body. The provided filtration component can filter and intercept suspended substances without opening the reaction tank body, further improving the accuracy of the experimental results. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of the wastewater toxicity testing device provided in Embodiment 1 of the present utility model;

[0033] Figure 2 It is a schematic structural diagram of the wastewater toxicity testing device provided in Embodiment 2 of the present utility model.

[0034] Among them, 1 - reaction tank body; 2 - support base; 3 - controller; 4 - inlet water tank; 5 - oxygen regulator; 6 - oxygen source; 7 - first driving pump; 8 - second driving pump; 9 - purification tank body; 10 - pressure sensing component; 11 - multi-functional sensing component; 12 - auxiliary handle; 13 - heating component; 14 - filtering component; 15 - main inlet pipe; 16 - inlet pipe; 17 - inlet branch pipe; 18 - outlet pipe; 19 - outlet branch pipe. Specific implementation mode

[0035] It should be understood that in the description of the present invention, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] It should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "set", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0037] Those skilled in the art should understand that the present invention necessarily includes the necessary pipelines, conventional valves and general pump equipment for realizing the complete process, but the above contents do not belong to the main improvement points of the present invention. Those skilled in the art can add and arrange them by themselves based on the process flow and equipment structure selection, and the present invention does not make special requirements and specific limitations on this.

[0038] The technical solution of the present invention will be further described below with reference to the drawings and through specific implementation modes.

[0039] In a specific embodiment, the present utility model provides a wastewater toxicity testing device, which includes an inlet water tank, a detection tank, an oxygen source and a controller. The inlet end of the detection tank is connected to the inlet water tank through a water inlet pipe network, and the detection tank is also connected to the oxygen source through an air inlet pipe network. The detection tank includes at least two reaction tank bodies stacked in sequence. An activity cover plate and a support base are movably connected to the top and bottom of the reaction tank body respectively. Detection components are independently arranged in at least two of the reaction tank bodies, and the detection components are electrically connected to the controller. A filtering component is also arranged in the support base. The water inlet end of the filtering component is connected to the inlet water tank through the water inlet pipe network, and the water outlet end of the filtering component is connected to the reaction tank body through a water outlet pipe network. The present utility model uses the activity cover plate to add test fish and clean the reaction tank body. During application, the wastewater to be detected in the inlet water tank is sent into the reaction tank body, so that the water depth in the reaction tank body does not exceed 75% of the total height of the reaction tank body. Then, test fish such as fish are added to the reaction tank body, and the toxicity of the wastewater is detected by observing the situation of the test fish. A circulation component for pumping water is also arranged in the support base of the present utility model, which is configured to provide power for the filtering component.

[0040] Preferably, the number of the reaction tank bodies is 2 to 6.

[0041] In some embodiments, a plurality of card slots are arranged on the surface of the support base along the circumferential direction, and a plurality of limit protrusions are arranged on the surface of the reaction tank body along the circumferential direction. Part of the limit protrusions are located in the card slots. Adjacent reaction tank bodies are stacked longitudinally, and the reaction tank body is connected to the support base, and the joint is compacted by its own gravity, improving the sealing effect of the detection tank.

[0042] In some embodiments, the depth of the card slot is greater than the height of the limit protrusion, and a sealing component is also arranged in the card slot. The sealing component is used to block the card slot. The detection tank of the present utility model is integrally designed to be sealed. After connecting the protrusion and the card slot, the sealing component is used to ensure that there is no gap between the reaction tank body and the support base. Specifically, the sealing component can be a rubber pad.

[0043] In some embodiments, a purification tank body is also suspended in the reaction tank body. The purification tank body is communicated with the reaction tank body, and an absorption liquid for purifying air is contained in the purification tank body. The purification tank body is communicated with the reaction tank body to allow gas phase circulation. The filled absorption liquid is used to absorb the carbon dioxide generated by the respiration of the test fish, and then oxygen is used for supplementation to ensure the stability of the oxygen concentration and pressure in the reaction tank body. Among them, the absorption liquid can adopt an alkaline solution well-known to those skilled in the art for absorbing carbon dioxide. Specifically, it can be sodium hydroxide.

[0044] In some embodiments, the detection component includes a pressure sensing component and a multi-functional sensing component. The pressure sensing component is used to detect the pressure inside the reaction tank body, and the multi-functional sensing component is used to detect the wastewater temperature, pH, and dissolved oxygen concentration. The pressure sensing component and the multi-functional sensing component are independently connected to the controller through connecting wires. A hollow protective shell is also sleeved on the outer periphery of the multi-functional sensing component. Oxygen is provided to the reaction tank body by an oxygen source, and the pressure inside the reaction tank body is detected in real time by the pressure sensing component to ensure the pressure and temperature inside the tank body. The multi-functional sensing component is used to detect data such as the temperature, pH, and dissolved oxygen of the wastewater inside the reaction tank body to ensure that the environment inside the reaction tank body is suitable. The controller is used to read, display, and store data.

[0045] In some embodiments, a heating component is further provided inside the support base. The heating component is also electrically connected to the controller to control the opening and closing and temperature of the heating component. The heating component is used to heat the reaction tank body to ensure that the environmental temperature inside the reaction tank body is suitable for the growth of test fish.

[0046] In some embodiments, an oxygen regulator is further provided on the inlet pipe network. The oxygen regulator is electrically connected to the controller. The controller controls the oxygen regulator to adjust the oxygen introduced from the oxygen source and can also adjust the amount of oxygen introduced.

[0047] In some embodiments, the controller controls the oxygen regulator to adjust the oxygen introduction and oxygen concentration according to the stored data, and can also control the opening and closing and heating temperature of the heating component.

[0048] In some embodiments, the ratio of the height of the reaction tank body to the bottom area of the reaction tank body < 0.2 dm -1 , and the water depth inside the reaction tank body does not exceed 75% of the total height of the reaction tank body. That is, by controlling the ratio of the height of the reaction tank (in decimeters) to the bottom area of the reaction tank body (in square decimeters), and the water depth of the wastewater inside the reaction tank body, the ratio of the water volume to the gas-liquid interface is ensured to meet the requirements.

[0049] In some embodiments, auxiliary handles are further provided on the side wall of the reaction tank body to facilitate the handling by the staff.

[0050] In some embodiments, the inlet pipe network includes an inlet main pipe, at least one inlet pipe, and at least one inlet branch pipe. Both ends of the inlet main pipe are respectively connected to the inlet tank and the inlet pipe. The inlet pipe is connected to the filtration component through the inlet branch pipe. A first driving pump is provided on the inlet main pipe or the inlet pipe. Specifically, a three-way valve can be provided at the connection between the inlet pipe and the inlet branch pipe to control whether the wastewater directly enters the reaction tank body or first enters the filtration component for filtration and then enters the reaction tank body.

[0051] The effluent pipe network includes at least one effluent pipe and at least one effluent branch pipe. The effluent pipe is connected to the reaction tank body, and the effluent pipe is connected to the filtration assembly through the effluent branch pipe. A second driving pump is provided on the effluent pipe. Specifically, a three-way valve can be provided at the connection between the effluent pipe and the effluent branch pipe to control the direct discharge of wastewater from the reaction tank body or the discharge of the water sample filtered by the filtration assembly into the reaction tank body.

[0052] Example 1

[0053] This example provides a wastewater toxicity testing device, as Figure 1 shown, including a water inlet tank 4, a detection tank, an oxygen source 6 and a controller 3. The water inlet tank 4 is located outside the detection tank, and the water inlet end of the detection tank is connected to the water inlet tank 4 through a water inlet pipe network. The detection tank is also connected to the oxygen source 6 through an air inlet pipe network, and an oxygen regulator 5 is provided on the air inlet pipe network. The oxygen regulator 5 is also electrically connected to the controller 3.

[0054] Among them, the detection tank includes six reaction tank bodies 1 stacked in sequence from top to bottom. The top and bottom of the reaction tank body 1 are respectively movably connected with a movable cover plate and a support base 2. The ratio of the height of the reaction tank body 1 to the bottom area of the reaction tank body 1 < 0.2 dm -1 . An auxiliary handle 12 is also provided on the side wall of the reaction tank body 1. A pressure sensing component 10 and a multi-functional sensing component 11 are provided in each reaction tank body 1. The pressure sensing component 10 is used to detect the pressure in the reaction tank body 1, and the multi-functional sensing component 11 is used to detect the wastewater temperature, pH and dissolved oxygen concentration. The pressure sensing component 10 and the multi-functional sensing component 11 are independently connected to the controller 3 through connecting wires. The multi-functional sensing component 11 is used to detect the dissolved oxygen concentration, temperature and pH. A hollow protective shell is sleeved on the outer periphery of the multi-functional sensing component 11. A purification tank body 9 is also suspended in the reaction tank body 1. The purification tank body 9 is gas-connected to the reaction tank body 1, and an absorbent liquid for purifying air is accommodated in the purification tank body 9.

[0055] A plurality of card slots are provided on the surface of the support base 2 along the circumferential direction, and a plurality of limiting protrusions are provided on the surface of the reaction tank body 1 along the circumferential direction. The limiting protrusions are partially located in the card slots for connection. The depth of the card slot is greater than the height of the limiting protrusion, and a rubber pad is also provided in the card slot for sealing. A filtration assembly 14 is also provided in the support base 2. The water inlet end of the filtration assembly 14 is connected to the water inlet tank 4 through a water inlet pipe network, and the water outlet end of the filtration assembly 14 is connected to the reaction tank body 1 through a water outlet pipe network. A heating assembly 13 is also provided in the support base 2 for heating the reaction tank body 1, and the heating assembly 13 is also electrically connected to the controller 3.

[0056] The inlet water pipe network includes a main inlet pipe 15, six inlet pipes 16 and six inlet branch pipes 17. One inlet end of the main inlet pipe 15 is connected to the inlet water tank 4, and the other outlet end is respectively connected to the inlets of the six inlet pipes 16. The outlets of the inlet pipes 16 are connected to the reaction tank body 1, and the inlet pipes 16 are connected to the outlets of the inlet branch pipes 17 through three-way valves. The inlets of the inlet branch pipes 17 are connected to the filtration assembly 14. A first driving pump 7 is arranged on the main inlet pipe 15 to provide power for the flow of wastewater. The outlet water pipe network includes six outlet pipes 18 and six outlet branch pipes 19. The inlets of the outlet pipes 18 are connected to the reaction tank body 1, and the outlets of the outlet pipes 18 are externally connected. The outlet pipes 18 are also connected to the inlets of the outlet branch pipes 19 through three-way valves. The outlets of the outlet branch pipes 19 are connected to the filtration assembly 14, and a second driving pump 8 is arranged on each of the outlet pipes 18 to provide power for the flow of wastewater.

[0057] Example 2

[0058] This embodiment provides a wastewater toxicity testing device, which is different from that of Example 1 in that: as Figure 2 shown, the inlet water tank 4 is arranged on the reaction tank body 1 at the top of the detection tank, and a first driving pump 7 is independently arranged on each of the six inlet pipes 16 connecting the inlet water tank 4 and the reaction tank body 1. The remaining structures are the same as those of Example 1.

[0059] Application Example 1

[0060] This application example uses a wastewater toxicity testing device provided in Example 1 to detect the toxicity of petrochemical wastewater. Oxygen is provided by the cylinder oxygen source 6, and the lye used is sodium hydroxide. The specific steps are as follows:

[0061] (1) Prepare experimental water with different concentrations according to requirements and inject them into the reaction tank body 1 respectively. From top to bottom, they are the blank group and experimental groups 1-5, and the wastewater content in experimental groups 1-5 increases sequentially from top to bottom;

[0062] (2) Put the prepared test fish into each reaction tank body 1 and cover it with a movable cover plate;

[0063] (3) Open the valve of the oxygen source 6, and the oxygen regulator 5 controls the oxygen input. At the same time, the controller 3 controls the heating component 13 to heat the reaction tank body 1, and monitors the pressure in the reaction tank body 1, as well as data such as the temperature, pH, and dissolved oxygen of the wastewater sample;

[0064] (4) After the values are stable, stack the six reaction tank bodies 1 in sequence;

[0065] (5) Open the first driving pump 7 and the second driving pump 8 to conduct a flowing water experiment;

[0066] (6) Observe and record the state of the test fish. If it is found that there is a lot of suspended matter such as fish feces, the filter assembly 14 can be opened for filtering;

[0067] (7) After the experiment, the number of dead test fish was counted.

[0068] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A wastewater toxicity testing device, characterized in that: The wastewater toxicity testing device comprises an inlet pool, a detection pool, an oxygen source and a controller. The water inlet end of the detection pool is connected to the inlet pool via an inlet pipe network, and the detection pool is also connected to the oxygen source via an air inlet pipe network. The detection pool comprises at least two reaction pool bodies stacked in sequence, and the top and bottom of the reaction pool bodies are respectively movably connected with a movable cover plate and a support base. At least two of the reaction pool bodies are independently provided with detection components, and the detection components are electrically connected to the controller. A filter component is also provided in the support base, and the water inlet end of the filter component is connected to the inlet pool via the inlet pipe network, and the water outlet end of the filter component is connected to the reaction pool body via the outlet pipe network.

2. The wastewater toxicity testing device according to claim 1, characterized in that: The surface of the support base is provided with a plurality of slots along the circumferential direction, and the surface of the reaction pool body is provided with a plurality of limiting protrusions along the circumferential direction, and the limiting protrusions are partially located in the slots.

3. The wastewater toxicity testing device according to claim 2, characterized in that: The depth of the card slot is greater than the height of the limiting protrusion. A sealing component is also arranged in the card slot, and the sealing component is used to seal the card slot.

4. The wastewater toxicity testing device according to claim 1, characterized in that: A purification tank body is also suspended in the reaction tank body, the purification tank body is communicated with the reaction tank body, and the purification tank body contains an absorption liquid for purifying air.

5. The wastewater toxicity testing device according to claim 1, characterized in that: The detection component includes a pressure sensing component and a multifunctional sensing component. The pressure sensing component is used to detect the pressure in the reaction tank body, and the multifunctional sensing component is used to detect the wastewater temperature, pH and dissolved oxygen concentration. The pressure sensing component and the multifunctional sensing component are independently connected to the controller through connecting wires, and the outer periphery of the multifunctional sensing component is also provided with a hollow protective shell.

6. The wastewater toxicity testing device according to claim 1, characterized in that: A heating component is also arranged in the support base, and the heating component is also electrically connected to the controller.

7. The wastewater toxicity testing device according to claim 1, characterized in that: The air intake pipe network is also provided with an oxygen regulator, and the oxygen regulator is electrically connected to the controller.

8. The wastewater toxicity testing device according to claim 1, characterized in that: The ratio of the height of the reaction tank body to the bottom area of ​​the reaction tank body is less than 0.2dm -1 .

9. The wastewater toxicity testing device according to claim 1, characterized in that: The side wall of the reaction cell body is also provided with an auxiliary handle.

10. The wastewater toxicity testing device according to claim 1, characterized in that: The water inlet network includes a water inlet main pipe, at least one water inlet pipe and at least one water inlet branch pipe, the two ends of the water inlet main pipe are respectively connected to the water inlet pool and the water inlet pipe, the water inlet pipe is connected to the filter assembly through the water inlet branch pipe, and a first driving pump is provided on the water inlet main pipe or the water inlet pipe; The outlet pipe network includes at least one outlet pipe and at least one outlet branch pipe, the outlet pipe is connected to the reaction tank body, the outlet pipe is connected to the filter assembly through the outlet branch pipe, and a second driving pump is arranged on the outlet pipe.

Images