CN215449162U - In-situ sediment biotoxicity testing device - Google Patents
In-situ sediment biotoxicity testing device Download PDFInfo
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- CN215449162U CN215449162U CN202120825297.0U CN202120825297U CN215449162U CN 215449162 U CN215449162 U CN 215449162U CN 202120825297 U CN202120825297 U CN 202120825297U CN 215449162 U CN215449162 U CN 215449162U
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Abstract
The utility model provides an in-situ sediment biotoxicity testing device, which comprises: the testing box body is provided with a mesh structure on the side wall and the bottom surface; a metal apron plate is arranged at the bottom of the test box body and surrounds the outer wall surface of the test box body, and the metal apron plate is gradually inclined downwards in the direction extending outwards from the outer wall surface; one end of the operating rope is connected with the top surface of the test box body, and the other end of the operating rope is connected with the floating device; the test box body can have a large culture space and is suitable for culturing large-scale freshwater mussels and other benthonic animals, and the metal apron plate plays a supporting role and prevents the test box body from sinking too much.
Description
Technical Field
The utility model belongs to the field of in-situ test experiments of bottom sediment, and particularly relates to an in-situ bottom sediment biotoxicity testing device.
Background
In the case of polluted water, a great amount of nutrient salts and pollutants are stored in sediment of the bottom sediment. Nutritive salts and pollutants in the sediments can be released into the upper water body again when the overlying water environment changes, so that endogenous pollution is formed, and the water quality of the water body is seriously influenced. And because pollutants are stored in the bottom mud, the pollutants are gradually accumulated after being absorbed by aquatic organisms, toxic effects can also be generated, and the physiological functions of the organisms are influenced.
With the increasingly deep research on the bottom sludge pollutants, the biological toxicity exposure experiment aiming at the bottom sludge is also carried out more widely. In most cases, biotoxicity is carried out in laboratories. The collected sediment is sent to a laboratory, and sediment animals are cultured in a test box body, so that the biological toxicity simulation test can be completed. However, the sample is taken back to the laboratory for simulation test, on one hand, the time and the labor are consumed, and on the other hand, the laboratory is often difficult to completely simulate the environmental conditions of the water body, so that the test deviation occurs. In order to solve this problem, chinese patent document CN209624096U discloses a culture apparatus for in situ determination of biological toxicity of sediments, which comprises: the biological filter comprises a support base body, a group of exposure chambers and containing chambers, wherein the exposure chambers are fixed on the upper surface of the support base body and used for containing various types of organisms, the containing chambers are fixed on the support base body, correspond to the exposure chambers one by one and are used for being embedded into sediments, the exposure chambers are communicated with the corresponding containing chambers up and down, the exposure chambers are cylindrical and are formed by surrounding screens, screen separation layers are additionally arranged between part of the exposure chambers and the corresponding containing chambers, PVC plugs are arranged above the exposure chambers, and openings are formed in the lower portions of the containing chambers.
The above-mentioned culture apparatus of the prior art can culture organisms in situ on the sediment to allow benthonic animals to grow on the sediment, thereby completing the in situ toxicity test of the sediment organisms, but has a problem in that the culture apparatus using a cylindrical exposure chamber and a conical receiving chamber into which the sediment is inserted has a limited number of organisms that can be accommodated, and is generally applicable only to the culture of small benthonic organisms, and is difficult to accommodate organisms such as relatively large mussels; meanwhile, the method lacks a detection means for water and sediment, so that the test lacks the support of water and sediment detection data.
Disclosure of Invention
Therefore, the technical problems to be solved by the utility model are that the culture device for testing the toxicity of the sediment in the prior art can only be used for culturing small benthonic organisms and a detection means for water and sediment is lacked, and further an in-situ sediment biotoxicity testing device which is large in space and can be used for detecting and sampling the water and the sediment is provided.
The technical scheme for solving the technical problems and sampling in the utility model is as follows:
an in situ sludge biotoxicity testing device, comprising: the testing box body is provided with a mesh structure on the side wall and the bottom surface; a metal apron plate is arranged at the lower part of the test box body and surrounds the outer wall surface of the test box body, and the metal apron plate is gradually inclined downwards in the direction extending outwards from the outer wall surface; one end of the operating rope is connected with the top surface of the test box body, and the other end of the operating rope is connected with the floating device; the water quality detection device is positioned below the floating device and connected with the floating device.
The testing box body is characterized by further comprising a mounting plate, the mounting plate is connected with the testing box body, mounting holes are formed in the mounting plate, and bottom mud sampling devices are inserted into the mounting holes.
The test box body is a rectangular box body, the cross section of the rectangular box body is rectangular, and two longer parallel sides of the rectangular box body are perpendicular to the flow direction of the water body.
The cross section of the test box body is in a ring shape, and a hollow cavity is arranged at the central position of the test box body.
The utility model discloses a gravity sampling device, including cavity, mounting panel is provided with in the cavity be provided with the mounting hole on the mounting panel the gravity sampling pipe has been put to the mounting hole interpolation, the axial of gravity sampling pipe sets up along vertical direction, the top of gravity sampling pipe is connected with the lifting rope.
The mounting panel in vertical direction with the bottom surface looks parallel and level of experimental box.
An annular bulge is arranged on the outer wall surface of the gravity sampling pipe and clamped above the mounting hole.
And a water outlet is arranged at the top end of the gravity sampling pipe.
The water outlet is provided with a cover plate, and the cover plate is installed at the water outlet through a link.
The in-situ bottom mud biotoxicity testing device has the advantages that:
according to the in-situ sediment biotoxicity testing device, the mesh structures are arranged on the side wall and the bottom surface of the testing box body, after the testing box body is placed in a water body, the bottom surface of the testing box body sinks into sediment, aquatic organisms in the box body can be in contact with the sediment, the volume of the testing box body is not limited, and therefore the device can have a large breeding space and is suitable for culturing large-scale freshwater mussels and other benthonic animals. Meanwhile, a metal apron board is arranged around the outer wall surface of the test box body, and the metal apron board plays a supporting role to prevent the test box body from sinking too much. The in-situ sediment biotoxicity testing device is connected with the floating device through an operation rope, the operation rope is used for operating the testing device to sink and rise, and the buoy plays a role in indicating the direction and fixing the operation rope.
The in-situ sediment biotoxicity testing device is preferably provided with a water quality detection device, wherein the water quality detection device is positioned below the floating device and is connected with the floating device, so that the water quality detection of an upper water body can be realized.
The in-situ sediment biotoxicity testing device is further preferably provided with an installation plate, the installation plate is connected with the test box body, an installation hole is formed in the installation plate, and a sediment sampling device is inserted into the installation hole. Therefore, when the testing device is put down, the sediment sampling device can enter sediment at the same time, and the sediment sampling device is lifted through the lifting rope, so that the sediment sampling of the point position for carrying out the in-situ test can be completed.
In order to make the technical scheme of the in-situ sediment biotoxicity testing device more clearly understood, the utility model is further described with reference to the specific drawings and specific examples.
Drawings
Fig. 1 is a schematic structural diagram of a test box of the in-situ sediment biotoxicity testing device of the utility model;
fig. 2 is a top view of a test box of the in-situ sediment biotoxicity testing device of the utility model;
fig. 3 is a schematic structural diagram of a floating device of the in-situ sediment biotoxicity testing device of the utility model;
fig. 4 is a schematic structural diagram of the sediment sampling device according to the utility model;
wherein the reference numerals are:
1-test box body; 2-metal skirting boards; 3-a sediment sampling device; 31-a sludge inlet; 32-a water outlet; 4-mounting a plate; 41-mounting holes; 5-operating a rope; 6-lifting a rope; 7-a hollow cavity; 8-a floatation device; 9-water quality detection device.
Detailed Description
It should be noted that "up", "down", "inside" and "outside" in the directions referred to are relative to the state of use of the test apparatus, the test chamber 1 of which is placed on the deposit, and the vertical direction is "up" and the reverse direction is "down". When the inside and the outside are involved, the central axis of the test box body 1 points to the outside of the test box body 1 from inside to outside.
This embodiment provides an in situ sediment biotoxicity testing device, as shown in fig. 1, the testing device includes: the cross section of the test box body 1 is in a circular ring shape in the test box body 1, and a hollow cavity 7 is arranged at the central position of the test box body 1. A metal apron board 2 is arranged around the outer wall surface of the test box body 1 at a position close to the bottom of the lower part of the test box body 1, and the metal apron board 2 is gradually inclined downwards in a direction extending outwards from the outer wall surface along the radial direction of the test box body 1; in the present embodiment, the vertical distance between the upper edge of the skirt 2 and the bottom surface of the test case 1 is 10 cm. The included angle between the metal apron board 2 and the outer wall surface of the test box body 1 is 80-85 degrees, and the ratio of the projection length of the metal apron board 2 in the horizontal direction to the outer diameter of the test box body 1 is 1: (3-4). The side wall and the bottom surface of the test box body 1 are provided with mesh structures, and the size of each mesh structure is smaller than that of a tested organism, so that escape is avoided. In this embodiment, the inner ring wall surface and the outer ring wall surface corresponding to the hollow cavity 7 of the circular ring-shaped test box body 1 are both integrally provided with mesh structures. An openable door is arranged on the outer wall surface of the experimental box body, so that benthonic organisms can be prevented conveniently.
The testing device is provided with an operating rope 5, one end of the operating rope 5 is connected with the top surface of the testing box body 1, and the other end of the operating rope 5 is connected with a floating device 8, as shown in fig. 2; in this embodiment, the operation rope 5 is connected to the test box 1 through three branch ropes, one end of each branch rope is connected to the top surface of the test box 1, and the other end of each branch rope converges on the central axis of the test box 1 and is connected to the end point of the operation rope 5, and the floating device 8 is suitable for floating on the water surface, such as a floating platform and a buoy. The testing device is further provided with a water quality detection device 9, and the water quality detection device 9 is located below the floating device 8 and connected with the floating device 8. In this embodiment, the water quality detector 9 and the floating device 8 are connected by a connecting rod.
As a preferred embodiment, the in-situ bottom sediment biotoxicity testing device in the embodiment further comprises a mounting plate 4, as shown in fig. 1 and 3, the mounting plate 4 is connected to the test box 1, a mounting hole 41 is formed in the mounting plate 4, and the bottom sediment sampling device 3 is inserted into the mounting hole 41. As a preferred embodiment, in the embodiment of this year, a mounting plate 4 is arranged in the hollow cavity 7, a mounting hole 41 is arranged on the mounting plate 4, a gravity sampling pipe is inserted into the mounting hole 41, as shown in fig. 4, the gravity sampling pipe is arranged in the vertical direction along the axial direction, and a lifting rope 6 is connected to the top end of the gravity sampling pipe. Wherein, the mounting plate 4 is parallel and level with the bottom surface of the test box body 1 in the vertical direction, so that the gravity sampling pipe can extend to the lower part of the test box body 1 after being inserted into the mounting hole 41, thereby facilitating the completion of sampling. As shown in fig. 1, an annular protrusion is disposed on an outer wall surface of the gravity sampling pipe, and the annular protrusion is located at an upper portion of the gravity sampling pipe. The annular projection is caught above the mounting hole 41. The bottom of gravity sampling pipe is provided with into mud mouth 31, and the top is provided with outlet 32, outlet 32 department is provided with the apron, the apron is installed through linking outlet 32 department. The axis of the mounting hole 41 in this embodiment is offset from the axis of the hollow cavity 7 of the test case 1, so that the lifting rope 6 and the operation rope 5 do not interfere with each other.
In-situ test experiments are carried out by using the in-situ sediment biotoxicity testing device in the embodiment, and taking mussel culture as an example, the operation method comprises the following steps:
and opening a door on the side wall of the test box body 1, and putting the freshwater mussel into the test box body 1. The test box body 1 is sunk to the bottom of the water body by using the operating rope 5, and in the process, the gravity sampling tube firstly contacts the sediment and inserts the sediment under the action of self gravity. When test box 1 touches the end after, pulling lifting rope 6 will the gravity sampling pipe takes out, the gravity sampling pipe is at the whereabouts in-process, and its apron is opened under water conservancy promotes, accomplishes the drainage function, and at the lift in-process, the apron then is encapsulated situation under water conservancy promotes, realizes sealed to the sampling pipe, can prevent the landing of bed mud sample. One end of the operation rope 5 is connected with the test box body 1, the other end is connected on the floating device 8, the water quality detection device 9 below the floating device 8 can detect water quality, and the collected sediment sample is sent to a laboratory, so that the analysis of the sediment sample can be completed. When the test box body 1 is placed above the sediment, the metal apron board 2 plays a supporting role, and the test box body 1 can be prevented from sinking too much. Since the bottom surface of the test box 1 is also of a grid structure, the test box can sink into the sediment, so that a complete sediment section is formed inside the test box 1, and benthic organisms can move and feed on the sediment conveniently.
For the culture of the freshwater mussels, in addition to placing the freshwater mussels in the test box body 1, a lifting rope may be arranged in the test box body 1, the lifting rope is bound on the top surface of the test box body 1, and the freshwater mussels may be bound on the lifting rope at intervals for culture.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (9)
1. An in-situ sediment biotoxicity testing device, comprising:
the testing box body is provided with a mesh structure on the side wall and the bottom surface; a metal apron plate is arranged at the lower part of the test box body and surrounds the outer wall surface of the test box body, and the metal apron plate is gradually inclined downwards in the direction extending outwards from the outer wall surface;
one end of the operating rope is connected with the top surface of the test box body, and the other end of the operating rope is connected with the floating device;
the water quality detection device is positioned below the floating device and connected with the floating device.
2. The in-situ sediment biotoxicity testing device according to claim 1, further comprising a mounting plate, wherein the mounting plate is connected with the test box body, a mounting hole is formed in the mounting plate, and a sediment sampling device is inserted into the mounting hole.
3. The in-situ sediment biotoxicity testing device as claimed in claim 1 or 2, wherein the testing box body is a rectangular box body, the cross section of the rectangular box body is rectangular, and two longer parallel sides of the rectangular box body are perpendicular to the flow direction of the water body.
4. The in-situ sediment biotoxicity testing device as claimed in claim 1 or 2, wherein the cross section of the test box body is circular, and a hollow cavity is arranged at the central position of the test box body.
5. The in-situ sediment biotoxicity testing device according to claim 4, wherein a mounting plate is arranged in the hollow cavity, a mounting hole is formed in the mounting plate, a gravity sampling pipe is inserted into the mounting hole, the axial direction of the gravity sampling pipe is arranged along the vertical direction, and a lifting rope is connected to the top end of the gravity sampling pipe.
6. The in situ sediment biotoxicity testing device of claim 5, wherein the mounting plate is flush with the bottom surface of the test box in the vertical direction.
7. The in-situ sediment biotoxicity testing device as claimed in claim 6, wherein an annular bulge is arranged on the outer wall surface of the gravity sampling pipe, and the annular bulge is clamped above the mounting hole.
8. The in situ sediment biotoxicity testing device of claim 7, wherein a water outlet is arranged at the top end of the gravity sampling pipe.
9. The in situ sediment biotoxicity testing device of claim 8, wherein a cover plate is arranged at the water drainage port, and the cover plate is installed at the water drainage port through a chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120825297.0U CN215449162U (en) | 2021-04-21 | 2021-04-21 | In-situ sediment biotoxicity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120825297.0U CN215449162U (en) | 2021-04-21 | 2021-04-21 | In-situ sediment biotoxicity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215449162U true CN215449162U (en) | 2022-01-07 |
Family
ID=79705128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120825297.0U Expired - Fee Related CN215449162U (en) | 2021-04-21 | 2021-04-21 | In-situ sediment biotoxicity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215449162U (en) |
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2021
- 2021-04-21 CN CN202120825297.0U patent/CN215449162U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |