CN110898780A - Experimental device and testing method for photolysis of substances in soil - Google Patents
Experimental device and testing method for photolysis of substances in soil Download PDFInfo
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- CN110898780A CN110898780A CN201911160264.2A CN201911160264A CN110898780A CN 110898780 A CN110898780 A CN 110898780A CN 201911160264 A CN201911160264 A CN 201911160264A CN 110898780 A CN110898780 A CN 110898780A
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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Abstract
The invention relates to an experimental device and a testing method for photolysis of substances in soil, which comprises a box body with a door at the front end, wherein a lifting table is arranged at the bottom of the box body, a soil photolysis pool is arranged at the upper end of the lifting table, the soil photolysis pool is of a double-layer structure, the upper part of the soil photolysis pool is an open slot structure for accommodating a soil groove, and the lower part of the soil photolysis pool is a water circulation temperature control bin; the water circulation temperature control bin is connected with an external water circulation temperature control mechanism and is used for controlling the temperature of the soil photolysis pool; and a light source irradiation unit with adjustable distance is arranged above the soil photolysis pool. The soil photolysis experiment temperature and light intensity monitoring device is simple in structure, economical, practical and convenient to operate, can adjust and monitor the temperature and light intensity in a soil photolysis experiment according to the experiment condition control requirement, can achieve accurate adjustment of the temperature, is accurate in experiment test structure, and meets the requirement of long-time experiment test.
Description
Technical Field
The invention belongs to the field of photolysis experiments, and particularly relates to an experimental device and a testing method for photolysis of substances in soil.
Background
The photolysis of chemical substances on the soil surface determines important ways for the chemical substances to be transferred and disappear in the environment. In the fields of chemical pesticide toxicity test, drug safety evaluation and the like, the photolysis behavior of a substance in soil needs to be evaluated in the experimental process. In the field of environmental science research, many researchers also conduct basic research on the environmental behavior of some substances in soil, including the photolytic behavior of the substances in soil. When carrying out such experiments or researches, a soil photolysis device meeting the requirements of experimental technical parameters is needed.
Some photolysis devices are mainly used for photolysis experiments of substances in water bodies, and are short of photolysis experimental devices in soil. For example, chinese utility model patent application No. 201110206890.8 discloses a photolysis experimental apparatus, the power distribution box comprises a box body, arrange two at least fluorescent tubes on box upper portion, arrange radiator fan on box upper portion both sides wall, arrange the five magnetic stirring device of bottom in the box, place the basin in five magnetic stirring device heating plates/agitator disk top, place the household utensils that are used for placing the test sample in the basin, the position of placing of household utensils and five magnetic stirring device's sample point position are corresponding, be provided with the inlet outlet that extends to outside the box on the basin. The technical scheme that above-mentioned patent was published is mainly used for aquatic material photolysis experiment, nevertheless to material photolysis experiment in the soil, but few have simple structure, convenient operation, economy effective, can stabilize the device of accuse light accuse temperature and monitoring light intensity and temperature at present. Especially, the current device can't realize accurate temperature regulation, and the problem that the light source generates heat after long-time irradiation is more serious, easily causes the temperature fluctuation great in the test box, causes great experimental error.
Disclosure of Invention
The invention aims to solve the problems and provide an experimental device and a testing method for photolysis of a substance in soil, wherein the experimental device can realize accurate adjustment of temperature, has an accurate test structure and can meet the test requirement of a long-time test.
The purpose of the invention is realized by the following technical scheme:
the experimental device for photolysis of substances in soil comprises a box body with a door at the front end, wherein a lifting table is arranged at the bottom of the box body, a soil photolysis tank is arranged at the upper end of the lifting table and is of a double-layer structure, the upper part of the soil photolysis tank is of an open slot structure for accommodating a soil groove, and the lower part of the soil photolysis tank is of a water circulation temperature control bin; the water circulation temperature control bin is connected with an external water circulation temperature control mechanism and is used for controlling the temperature of the soil photolysis pool; and a light source irradiation unit with adjustable distance is arranged above the soil photolysis pool.
Furthermore, a support is arranged in the box body, a supporting plate with adjustable height is arranged on the support, and the light source irradiation unit is arranged on the supporting plate.
Further, a height adjusting knob is arranged between the two ends of the supporting plate and the support, and the height of the light source is adjusted by loosening and tightening the fixing knobs on the two sides.
Furthermore, the light source irradiation unit comprises a light emitting piece emitting a light source, a water circulation cooling sleeve used for cooling the light emitting piece is arranged outside the light emitting piece, and the water circulation cooling sleeve is connected with an external water circulation cooling mechanism.
Furthermore, the back of the box body is provided with two cooling fans, the door at the front end is provided with an observation window, and dark glass is installed on the observation window.
Furthermore, an optical filter or a quartz glass cover for covering the soil photolysis cell is also arranged above the soil photolysis cell.
Furthermore, a door lock handle is arranged on the door opening at the front end of the box body.
Further, the device is in the upper end of box is equipped with the controller of controlling means operation be equipped with light intensity sensor in the soil photolysis pond and be used for monitoring the temperature sensor of temperature in the soil photolysis pond and light source irradiation unit temperature, light intensity sensor and temperature sensor all are connected with the controller.
The method for performing photolysis experiment on the substances in the soil by adopting the device comprises the following steps:
(1) paving soil containing substances in a soil tank, and dividing the soil in advance according to the experimental sampling requirement;
(2) adjusting the lifting table to a proper height, then placing the soil tank in a soil photolysis pool, and covering an optical filter or a quartz glass cover according to the experimental requirement;
(3) opening a water circulation temperature control mechanism to control the temperature in the soil photolysis tank, so that the temperature is stabilized at the set temperature required by the experiment;
(4) and adjusting the power of the light source irradiation unit and the height of the light source irradiation unit according to the experiment requirements, and performing the experiment after the temperature and the light intensity meet the requirements.
Compared with the prior art, the invention has the following characteristics:
1. the soil photolysis tank is of a double-layer structure, the lower part of the soil photolysis tank is provided with the water circulation temperature control bin, the water circulation temperature control bin is connected with the external water circulation temperature control mechanism, and the temperature can be controlled through water circulation, so that the temperature of the soil photolysis tank can be controlled more effectively and timely.
The existing equipment mostly adopts heaters, cold pressing equipment and the like to control the temperature of the box body integrally, main temperature parameters in the box body require the temperature in the soil photolysis tank, a main heat source is a high-power light source, the temperature fluctuation in the soil photolysis tank is large due to the integral temperature control of the box body, and even the temperature can not be reduced to the range of experimental requirements. According to the invention, two water circulation temperature control mechanisms are adopted to respectively control the temperature of the light source and the soil photolysis pool, on one hand, the temperature of the soil photolysis pool is independently controlled under the condition of reducing the influence of the light source on the box body temperature to the maximum extent, and on the other hand, a small amount of water is added in the soil photolysis of the pool for heat transfer, so that the temperature control is more accurate and stable.
2. The light source irradiation unit comprises a light emitting piece emitting a light source, a water circulation cooling sleeve used for cooling the light emitting piece is arranged outside the light emitting piece, and the water circulation cooling sleeve is connected with an external water circulation cooling mechanism. The light source of the soil photolysis experiment mostly adopts a high-power (at least 1000W) xenon lamp, and the light source is very close to the soil, so as to meet the requirements of experiment parameters, and the light control and the temperature control are two contradictory difficulties in the experiment process.
3. The invention has the functions of lamp source power regulation, light source and photolysis cell distance regulation and light intensity monitoring, is more beneficial to the control of light intensity in the experimental process and prevents the influence of light attenuation on the experiment.
4. The invention has simple structure, economy and practicality, and quick and convenient operation, and can meet the requirements of photolysis experiments in basic research of photolysis experiments and chemical substance environmental safety evaluation.
Drawings
FIG. 1 is a schematic view of a photolysis apparatus according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the internal structure of the photolysis device housing according to an embodiment of the invention;
in the figure: 1-a box body; 2-a controller; 3-water circulation temperature control mechanism; 4-observation window; 5-box door lock handle; 6-cooling water pipeline; 7-a scaffold; 8-water circulation cooling sleeve; 9-a light source; 10-height adjustment knob; 11-soil photolysis pool; 12-a soil tank; 13-water circulation temperature control cabin; 14-optical filters or quartz glass covers; 15-a lifting platform; 16-water circulation cooling mechanism.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in figures 1 and 2, the device for photolysis experiment of substances in soil comprises a box body 1, a controller 2, a water circulation temperature control mechanism 3, a bracket 7, a light source 9, a soil photolysis tank 11 and a lifting platform 15. The back of the box body 1 is provided with two cooling fans, and the front of the box body is provided with an observation window 4 for containing dark glass. The controller 2 comprises a lamp source power adjusting function, a timing function and a light intensity monitoring function probe and is placed in the photolysis pool, and the two temperature probes with the temperature monitoring function are respectively placed beside the light source 9 and in the soil photolysis pool 11. The soil photolysis tank 11 is divided into an upper layer and a lower layer, the upper layer is provided with the soil tank 12, the upper layer can be covered with an optical filter or a quartz glass cover 14 according to the experimental requirements, and the lower layer is provided with a water circulation temperature control bin 13 for controlling the temperature of the photolysis tank.
The water circulation temperature control mechanism 3 is connected with a water circulation temperature control bin 13 to control the temperature of the soil photolysis pool 11, the water circulation cooling mechanism 16 is connected with a water circulation cooling sleeve 8 to cool the light source lamp, the water circulation temperature control mechanism 3 can specifically adopt a commercialized cooling water circulating pump with the temperature stability within +/-2 ℃ and the power not lower than 2kW, and the water circulation cooling mechanism 16 can specifically adopt a commercialized low-temperature cooling water circulating pump with the power not lower than 5 kW. The bracket 7 is used for fixing the water circulation cooling sleeve 8 and the light source 9, and the height of the light source can be adjusted by loosening and tightening the two-side height adjusting knob 10.
During the photolysis experiment of the substances in the soil, the soil containing the substances is flatly paved in a soil groove 12 and is divided according to the experiment sampling requirement in advance, a lifting platform 15 is lowered, then the soil groove is placed in a soil photolysis tank 11, a small amount of water is added in the tank for heat transfer, the soil groove is not submerged, and an optical filter or a quartz glass cover 14 is covered according to the experiment requirement.
And (3) turning on the water circulation temperature control mechanism 3 and the water circulation cooling mechanism 16, controlling the temperature of the photolysis tank at a set temperature according to the experimental requirements, and cooling the light source lamp. And (3) turning on a switch of the controller 2, adjusting a power knob of the lamp source to reach a set value range according to the light intensity display value and the experimental requirement, and if the set value cannot be reached, adjusting the distance between the lamp source and the photolysis pool by using a height adjusting knob 10 and a lifting platform 15, or replacing the lamp source 9. And observing the temperature of the photolysis cell, and setting a water circulation temperature control mechanism according to experimental requirements and display values. And starting an experiment after the temperature and the light intensity meet the requirements, observing the display value every day, and correspondingly adjusting the display value according to the requirements. The elevating platform is lowered during sampling, the optical filter or the quartz glass cover is taken out, then the soil tank is taken out, part of the divided soil is taken out according to the experiment requirement, the soil tank is put back into the photolysis tank, and the operation is repeated until the experiment is finished.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (9)
1. An experimental device for photolysis of substances in soil, which comprises a box body with a door at the front end and is characterized in that,
the box body is characterized in that a lifting platform is arranged at the bottom of the box body, a soil photolysis pool is arranged at the upper end of the lifting platform, the soil photolysis pool is of a double-layer structure, the upper part of the soil photolysis pool is of an open slot structure for accommodating a soil groove, and the lower part of the soil photolysis pool is a water circulation temperature control bin;
the water circulation temperature control bin is connected with an external water circulation temperature control mechanism and is used for controlling the temperature of the soil photolysis pool;
and a light source irradiation unit with adjustable distance is arranged above the soil photolysis pool.
2. The experimental device for photolysis of a substance in soil according to claim 1, wherein a support is disposed in the box, a support plate with adjustable height is disposed on the support, and the light source irradiation unit is disposed on the support plate.
3. The device for photolysis experiment of substances in soil according to claim 2, wherein a height adjusting knob is provided between the two ends of the supporting plate and the bracket, and the light source height is adjusted by loosening and tightening the two side fixing knobs.
4. The device for photolysis of a substance in soil according to claim 2, wherein the light source irradiation unit includes a light emitting member for emitting light, a water circulation cooling sleeve is disposed outside the light emitting member for cooling the light emitting member, and the water circulation cooling sleeve is connected to an external water circulation cooling mechanism.
5. The experimental device for photolysis of a substance in soil according to claim 1, wherein the back of the box body has two heat dissipation fans, the door at the front end is provided with an observation window, and the observation window is provided with dark glass.
6. The soil photolysis experimental apparatus as claimed in claim 1, wherein a filter or a quartz glass cover is further disposed above the soil photolysis cell.
7. The experimental device for photolysis of substances in soil according to claim 1, wherein a door lock handle is arranged on the door opening at the front end of the box body.
8. The device for photolysis of a substance in soil according to any one of claims 1-7, wherein the device is provided with a controller at the upper end of the box for controlling the operation of the device, and a light intensity sensor and a temperature sensor for monitoring the temperature of the soil photolysis tank and the temperature of the light source irradiation unit are provided in the soil photolysis tank, and both the light intensity sensor and the temperature sensor are connected to the controller.
9. A method for photolytic experiments of substances in soil using the device of claim 1, comprising the steps of:
(1) paving soil containing substances in a soil tank, and dividing the soil in advance according to the experimental sampling requirement;
(2) adjusting the lifting table to a proper height, then placing the soil tank in a soil photolysis pool, and covering an optical filter or a quartz glass cover according to the experimental requirement;
(3) opening a water circulation temperature control mechanism to control the temperature in the soil photolysis tank, so that the temperature is stabilized at the set temperature required by the experiment;
(4) and adjusting the power of the light source irradiation unit and the height of the light source irradiation unit according to the experiment requirements, and performing the experiment after the temperature and the light intensity meet the requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911160264.2A CN110898780A (en) | 2019-11-23 | 2019-11-23 | Experimental device and testing method for photolysis of substances in soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911160264.2A CN110898780A (en) | 2019-11-23 | 2019-11-23 | Experimental device and testing method for photolysis of substances in soil |
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| CN110898780A true CN110898780A (en) | 2020-03-24 |
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| CN201911160264.2A Pending CN110898780A (en) | 2019-11-23 | 2019-11-23 | Experimental device and testing method for photolysis of substances in soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976617A (en) * | 2021-11-08 | 2022-01-28 | 中国科学院沈阳应用生态研究所 | Device and method for degrading petroleum hydrocarbon in soil by simulating sunlight irradiation |
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| WO2003051463A1 (en) * | 2001-12-15 | 2003-06-26 | The Secretary Of State For Defence | Apparatus and method for the continuous photolytic treatment of an effluent |
| CN102247784A (en) * | 2011-07-22 | 2011-11-23 | 北京交通大学 | Photolytic experimental apparatus |
| CN203587486U (en) * | 2013-10-18 | 2014-05-07 | 环境保护部南京环境科学研究所 | Multifunctional photolysis experiment device |
| CN205095777U (en) * | 2015-11-02 | 2016-03-23 | 北京师范大学 | Multi -functional photochemical reaction ware based on solid surface catalysis |
| CN206597526U (en) * | 2017-03-13 | 2017-10-31 | 山东农业大学 | The analogue means of Pesticide Residue in Soil photodissociation |
| CN206731144U (en) * | 2016-12-27 | 2017-12-12 | 广东中科英海科技有限公司 | A kind of reaction vessels for soil surface photodissociation test |
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2019
- 2019-11-23 CN CN201911160264.2A patent/CN110898780A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003051463A1 (en) * | 2001-12-15 | 2003-06-26 | The Secretary Of State For Defence | Apparatus and method for the continuous photolytic treatment of an effluent |
| CN102247784A (en) * | 2011-07-22 | 2011-11-23 | 北京交通大学 | Photolytic experimental apparatus |
| CN203587486U (en) * | 2013-10-18 | 2014-05-07 | 环境保护部南京环境科学研究所 | Multifunctional photolysis experiment device |
| CN205095777U (en) * | 2015-11-02 | 2016-03-23 | 北京师范大学 | Multi -functional photochemical reaction ware based on solid surface catalysis |
| CN206731144U (en) * | 2016-12-27 | 2017-12-12 | 广东中科英海科技有限公司 | A kind of reaction vessels for soil surface photodissociation test |
| CN206597526U (en) * | 2017-03-13 | 2017-10-31 | 山东农业大学 | The analogue means of Pesticide Residue in Soil photodissociation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113976617A (en) * | 2021-11-08 | 2022-01-28 | 中国科学院沈阳应用生态研究所 | Device and method for degrading petroleum hydrocarbon in soil by simulating sunlight irradiation |
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