CN114002392A - Novel continuous water radon degassing measurement device and method - Google Patents
Novel continuous water radon degassing measurement device and method Download PDFInfo
- Publication number
- CN114002392A CN114002392A CN202111389968.4A CN202111389968A CN114002392A CN 114002392 A CN114002392 A CN 114002392A CN 202111389968 A CN202111389968 A CN 202111389968A CN 114002392 A CN114002392 A CN 114002392A
- Authority
- CN
- China
- Prior art keywords
- radon
- degassing
- water sample
- water
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007872 degassing Methods 0.000 title claims abstract description 162
- BWJGGLDSZPWFHM-UHFFFAOYSA-N radon hydrate Chemical compound O.[Rn] BWJGGLDSZPWFHM-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 title description 26
- 229910052704 radon Inorganic materials 0.000 claims abstract description 150
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims abstract description 147
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 142
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000741 silica gel Substances 0.000 claims abstract description 19
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 19
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 239000006199 nebulizer Substances 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 abstract description 24
- 238000000889 atomisation Methods 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 41
- 238000012544 monitoring process Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000002243 precursor Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000002663 nebulization Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 101100032908 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RAD7 gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000005258 radioactive decay Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0055—Specially adapted to detect a particular component for radionuclides
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4094—Concentrating samples by other techniques involving separation of suspended solids using ultrasound
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Measurement Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a novel continuous water radon degassing measuring device and a method, wherein the measuring device comprises a degassing container, an ultrasonic atomizer, a water sample uniform stirrer, a radon-containing water sample, a filter, an inverted U-shaped communicating vessel, a radon gas circulating gas inlet, a radon gas circulating gas outlet, an upper flange plate of the degassing container, a lower flange plate of the degassing container, a submersible pump, a waste water outlet, a cable joint of the degassing container, a silica gel hose, a dryer, a radon measuring instrument and a controller. According to the invention, the active ultrasonic atomization method is adopted to replace the traditional passive bubbling method, so that the contact surface of the radon-containing water sample and the air is greatly increased, and the radon degassing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water radon degassing measurement, in particular to a novel continuous water radon degassing measurement device and method.
Background
Radon is inert gas with inactive chemical property and radioactive decay characteristic, is ubiquitous in nature, and is mainly influenced by distribution of parent nuclide, geological structure of stratum (temperature, porosity, water content and the like) and geological activity (earthquake and the like) and other complex factors. Radon is one of seven major earthquake precursors generally accepted internationally as an underground fluid earthquake sensitive component, and from 1966 times of the chen table earthquake, China vigorously develops the research work of the earthquake precursors mainly based on radon gas measurement. In the field of earthquake precursor fluid observation, the method of adopting an earthquake observation well at home and abroad to observe fluid temperature, components, radon concentration in water, flow velocity/flow and the like for a long time at present, and preliminarily establishing the correlation between the information change and earthquake disasters.
Radon, in addition to migrating in the gas phase in the pores of the dry pore medium, is primarily dissolved in water in the pores or crevices containing water with a consequent degree of migration. In addition, radon in water bodies such as surface seepage water, artesian well water, river water and the like has great influence and harm on the natural environment and human health. Whether the monitoring is carried out in surface water, well water or deep underground water, the accuracy and the stable measurement of radon gas in water are the primary prerequisites for ensuring the monitoring of the abnormal radon information before earthquake and the evaluation of the radon concentration in environmental water, in the aspect of the radon degassing measuring device, a constant-temperature water bath is adopted by a Zhu-inheriting et al (2015) to control the temperature of a water sample for carrying out bubbling degassing radon monitoring, the temperature of the water sample is controlled to carry out bubbling degassing at a relatively constant temperature (25 ℃) so as to reduce or avoid the interference influence on the change of the water radon measuring value due to the difference of the bubbling water temperature of the water sample. Cheonghua et al (2015) make preliminary experiments on the water radon simulation observation automatic degassing device, and the bubbling time and the bubbling mode of the device are relatively fixed, so that the degassing efficiency is improved, and the obvious influence on the degassing efficiency caused by uncertainty of the bubbling time and the bubbling mode is reduced. Zhang Hui et al (2016) proposed a method and apparatus for measuring the water radon concentration of an overflow electret, which adopts an E-perm electret and an ion cavity combined to form an ionization cavity as a radon detector to measure the average radon concentration of continuous water flow, and the measurement result is basically consistent with that of a RAD7 radon measuring instrument in the water radon concentration range of 4-97 Bq/L. Wu Qing Rong (2016) developed an underground radon monitoring system for monitoring earthquake precursors, which mainly adopts the modes of dynamic splashing, static bubbling, high-pressure injection and the like to degas, realizes the continuous and stable water-gas separation of dynamic and static underground water, and then monitors the concentration change of radon by utilizing the strength of current signals of an ionization chamber. The automatic water radon exhaust system developed by the Litai rock et al (2017) simplifies the manual operation process, and the exhaust process is more accurate and reliable. Li Lianghui et al (2017) design and manufacture the automatic water pumping and automatic degassing device automatically, and control the automatic water pumping timing and the automatic degassing device quantitatively, so that the interference of unfixed water pumping time on data is reduced to a certain extent, the bubbling time and the bubbling mode are relatively fixed, the degassing efficiency is improved, and the obvious influence on the degassing efficiency caused by the uncertainty of the bubbling time and the bubbling mode is reduced. The log manifold (2018) develops an earthquake water radon observation diffuser, an atomizing core is used for spraying and degassing a radon-containing water sample, and a dryer is used for drying degassed radon gas, so that the continuous observation of the water radon in the water sample by a water sample sampler is realized, and the observation data level of the water radon is improved. Liuli et al (2019) developed a jet negative pressure type degasser, which carries out three times of desorption on a water sample, improves the degassing efficiency of radon in water and the stability of the device, effectively reduces interference factors in daily observation of radon,
in the aspect of water radon measurement, domestic scholars and enterprise units also develop and improve corresponding degassing devices and measuring devices in many aspects aiming at the characteristics of earthquake water radon observation, but according to the current research results and development devices, the following problems and disadvantages mainly exist:
(1) the method basically adopts a bubbling method, a dripping and splashing method, a spraying method and other passive degassing methods, and the water radon degassing efficiency of a degassing device is not high;
(2) in passive degassing methods such as a bubbling method, a dripping and splashing method, a spraying method and the like, the stability of controlling the air inflow and the water inflow of a degassing device is not high, so that the degassing stability is insufficient;
(3) in passive degassing methods such as a bubbling method, a dripping and splashing method, a spraying method and the like, monitoring of key parameters is lacked.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a novel continuous water radon degassing measuring device,
the measuring device comprises a degassing container, an ultrasonic atomizer, a water sample uniform stirrer, a radon-containing water sample, a filter, an inverted U-shaped communicating vessel, a radon gas circulation gas inlet, a radon gas circulation gas outlet, an upper flange plate of the degassing container, a lower flange plate of the degassing container, a submersible pump, a wastewater outlet, a cable joint of the degassing container, a silica gel hose, a dryer, a radon measuring instrument and a controller;
the degassing container consists of an upper part and a lower part, the upper part of the degassing container is connected with the lower part of the degassing container through an upper flange plate of the degassing container and a lower flange plate of the degassing container, a sealed chamber is formed between the upper part of the degassing container and the lower part of the degassing container, the water sample uniform stirrer is vertically fixed on the lower surface of the lower flange plate of the degassing container, a water sample containing radon is arranged in the sealed chamber, a stirring propeller of the water sample uniform stirrer is immersed in the water sample containing radon, the ultrasonic atomizer is immersed in the water sample containing radon, and an inverted U-shaped communicating vessel is arranged at the bottom of the degassing container,
the submersible pump is connected with the water inlet of the filter through the silica gel hose, the water outlet of the filter is communicated with the lower part of the degassing container through the silica gel hose,
the upper part of the degassing container is provided with the radon gas circulation gas inlet and the radon gas circulation gas outlet, and the gas outlet of the radon measuring instrument is connected with the radon gas circulation gas inlet through the silica gel hose; the air inlet of the radon measuring instrument is connected with the air outlet of the dryer through the silica gel hose, the air inlet of the dryer is connected with the radon gas circulating air outlet through the silica gel hose,
the upper portion of degasification container is provided with degasification container cable joint, inside the degasification container the even agitator of water sample with ultrasonic nebulizer pass through the cable with degasification container cable joint connects, degasification container cable joint is in the degasification container outside pass through the cable with the controller is connected.
Optionally, the distance between the liquid level of the radon-containing water sample and the upper surface of the ultrasonic atomizer is set to be 1-3 cm.
Optionally, the upper height and the lower height of the inverted U-shaped communicating vessel are at least set to be 4cm, and the inverted U-shaped communicating vessels with different heights are used for controlling the height of the liquid level of the radon-containing water sample in the degassing container.
Optionally, the controller can control simultaneously the ultrasonic atomizer with the operation process of the water sample uniform stirrer, the outer surface of the controller is provided with a display screen, and the display screen is used for displaying data in real time.
Optionally, a novel continuous water radon degassing measurement method,
the measuring method comprises the measuring device, and comprises the following steps:
s1: opening the submersible pump to enable an environment or a water sample to be detected to enter the degassing container through the submersible pump and the filter to form the radon-containing water sample;
s2: the radon-containing water sample in the degassing container can reach a balanced and stable liquid level, and then the redundant water sample is discharged through the waste water discharge port of the inverted U-shaped communicating vessel;
s3: continuously pumping in the water containing radon from the degassing container and continuously discharging the water from the waste water outlet by the submersible pump so that the radon water sample in the degassing container is continuously replaced by an environment or a water sample to be detected to form continuous sampling;
s4: after the liquid level of the radon-containing water sample in the degassing container is balanced and stable, opening the water sample homogenizing stirrer, then opening the ultrasonic atomizer, and continuously atomizing and degassing the radon-containing water sample;
s5: and opening the radon detector after the ultrasonic atomizer is opened, and measuring the concentration of radon gas coming out from the radon-containing water sample in the degassing container so as to calculate the radon concentration in the water of the radon-containing water sample.
Optionally, the radon concentration in water is calculated according to the following formula:
in the formula, CwThe radon concentration is the original radon concentration in the water sample and the unit is Bq/m3；VwIs the volume of the water sample, which is expressed in L; vaThe space volume of the gas phase part at the upper part of the liquid surface of the degassing device is expressed by L; vdAnd VTAre respectively emanometerThe unit of the sensitive volume of the detector and the effective volume of a gas circuit connecting pipeline of a measuring system is L; cmMeasuring radon concentration for a radon measuring instrument in Bq/m3(ii) a Eta is degassing efficiency; cBThe unit is Bq/m for the background radon concentration3。
The invention has the beneficial effects
(1) According to the invention, the active ultrasonic atomization method is adopted to replace the traditional passive bubbling method, so that the contact surface of the radon-containing water sample and the air is greatly increased, and the radon degassing efficiency is improved.
(2) The method adopts the controllable submersible pump to sample the radon-containing water body, and the radon-containing water sample in the degassing container is kept at a certain liquid level height at a constant and controllable flow rate to carry out continuous sampling replacement, so that the influence of the continuous sampling flow rate on the degassing efficiency is quantitatively controlled.
(3) The invention adopts the inverted U-shaped communicating vessel to isolate the radon-containing gas in the degassing container from the outside air, thereby avoiding the influence of the outside air on the measurement result of the radon water degassing.
(4) The invention adopts the controller to quantitatively control the injection power of the ultrasonic atomizer, realizes the quantitative control of the atomization amount of the ultrasonic atomizer, and finally realizes the quantitative control of the degassing efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the measuring device of the present invention.
FIG. 2 shows the result of measuring the radon outgassing of a water sample containing radon by a conventional bubbling method.
FIG. 3 is a water radon degassing measurement result of the water sample containing radon used in the measurement of FIG. 2 by the ultrasonic atomization method.
FIG. 4 shows the measurement result of water radon degassing of 2 water samples taken from a certain location in the Ganjiang by the conventional bubbling method.
FIG. 5 shows the results of continuous water radon degassing measurements by ultrasonic atomization at the same location as the measurements of FIG. 4.
Description of reference numerals: 1-a degassing vessel; 2-ultrasonic atomizer; 3-water sample uniform stirrer; 4-radon-containing water sample; 5-a filter; 6-inverting the U-shaped communicating vessel; 7-radon gas circulation inlet; 8-radon gas circulation gas outlet; 9-upper flange of degassing container; 10-lower flange of degassing container; 11-a submersible pump; 12-a waste water discharge port; 13-degassing vessel cable joint; 14-a silicone hose; 15-a dryer; 16-emanometer; 17-a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1-5, the present invention provides a novel continuous water radon degassing measuring device,
the measuring device comprises a degassing container 1, an ultrasonic atomizer 2, a water sample uniform stirrer 3, a radon-containing water sample 4, a filter 5, an inverted U-shaped communicating vessel 6, a radon gas circulation gas inlet 7, a radon gas circulation gas outlet 8, a degassing container upper flange plate 9, a degassing container lower flange plate 10, a submersible pump 11, a waste water outlet 12, a degassing container cable joint 13, a silica gel hose 14, a dryer 15, a radon detector 16 and a controller 17;
the degassing container 1 is composed of an upper part and a lower part, the upper part of the degassing container 1 is connected with the lower part of the degassing container 1 through an upper degassing container flange plate 9 and a lower degassing container flange plate 10, a sealed chamber is formed between the upper part of the degassing container 1 and the lower part of the degassing container 1, the water sample uniform stirrer 3 is vertically fixed on the lower surface of the lower degassing container flange plate 10, a radon-containing water sample 4 is arranged in the sealed chamber, a stirring screw of the water sample uniform stirrer 3 is immersed in the radon-containing water sample 4, the ultrasonic atomizer 2 is immersed in the radon-containing water sample 4, the distance from the liquid level of the radon-containing water sample 4 to the upper surface of the ultrasonic atomizer 2 is set to be 1-3 cm, the bottom of the degassing container 1 is provided with an inverted U-shaped communicating vessel 6, and the vertical height of the inverted U-shaped communicating vessel 6 is at least set to be 4cm, the inverted U-shaped communicating vessels 6 with different heights are used for controlling the liquid level height of the radon-containing water sample 4 in the degassing container 1,
the submersible pump 11 is connected with the water inlet of the filter 5 through the silica gel hose 14, the water outlet of the filter 5 is communicated with the lower part of the degassing container 1 through the silica gel hose 14,
the upper part of the degassing container 1 is provided with the radon gas circulation gas inlet 7 and the radon gas circulation gas outlet 8, and the gas outlet of the radon measuring instrument 16 is connected with the radon gas circulation gas inlet 7 through the silica gel hose 14; the air inlet of the radon measuring instrument 16 is connected with the air outlet of the dryer 15 through the silica gel hose 14, the air inlet of the dryer 15 is connected with the radon gas circulating air outlet 8 through the silica gel hose 14,
the upper portion of degassing container 1 is provided with degassing container cable joint 13, the inside even agitator 3 of water sample of degassing container 1 with ultrasonic nebulizer 2 pass through the cable with degassing container cable joint 13 is connected, degassing container cable joint 13 in degassing container 1 outside pass through the cable with controller 17 is connected, controller 17 can the simultaneous control ultrasonic nebulizer 2 with the operation process of even agitator 3 of water sample, the surface of controller 17 is provided with the display screen, the display screen is used for real-time display data,
a novel continuous water radon degassing measurement method,
the measuring method comprises the measuring device, and comprises the following steps:
s1: opening the submersible pump 11 to enable an environment or a water sample to be detected to enter the degassing container 1 through the submersible pump 11 and the filter 5 to form the radon-containing water sample 4;
s2: the radon-containing water sample 4 in the degassing container 1 reaches an equilibrium stable liquid level, and then the surplus water is discharged through the waste water discharge port 12 of the inverted U-shaped communicating vessel 6;
s3: the water sample 4 containing radon in the degassing container 1 is continuously replaced by the environment or the water sample to be tested by continuously pumping in the submersible pump 11 and continuously discharging from the waste water discharge port 12, so as to form continuous sampling;
s4: after the liquid level of the radon-containing water sample 4 in the degassing container 1 is balanced and stable, opening the water sample homogenizing stirrer 3, then opening the ultrasonic atomizer 2, and continuously atomizing and degassing the radon-containing water sample 4;
s5: and opening the radon detector 16 after the ultrasonic atomizer 2 is opened, and measuring the concentration of radon gas coming out from the radon-containing water sample 4 in the degassing container 1, thereby calculating the water radon concentration of the radon-containing water sample 4.
The radon concentration in water is calculated according to the following formula:
in the formula, CwThe radon concentration is the original radon concentration in the water sample and the unit is Bq/m3；VwIs the volume of the water sample, which is expressed in L; vaThe space volume of the gas phase part at the upper part of the liquid surface of the degassing device is expressed by L; vdAnd VTThe radon measuring instrument is characterized by comprising a radon measuring instrument detector sensitive volume and a measuring system gas circuit connecting pipeline effective volume, wherein the unit of the radon measuring instrument detector sensitive volume and the measuring system gas circuit connecting pipeline effective volume is L; cmMeasuring radon concentration for a radon measuring instrument in Bq/m3(ii) a Eta is degassing efficiency; cBThe unit is Bq/m for the background radon concentration3；
The method for deairing water radon provided by the invention adopts an active ultrasonic atomization method, and has the main principle that: the method comprises the following steps of converting electric energy into ultrasonic waves by using an ultrasonic wave energy conversion sheet, atomizing a water sample into mist water drops with small diameters by using the generated ultrasonic waves, suspending the mist water drops in a water radon degassing device, and generating a large gas-liquid two-phase contact interface between a large amount of mist water drops and air in the degassing device, so that radon gas in the mist water drops is separated out and enters the air in the degassing device, and finally the radon-containing air is circularly introduced into a radon measuring instrument 16 to measure the radon concentration and calculate the radon concentration in water, wherein the technical problems to be solved by the method comprise the following steps:
1) the ultrasonic atomization active degassing method is adopted to degas the water radon, so that the degassing efficiency in the water radon degassing measurement process is further improved;
2) the water inflow rate and the injection power of the ultrasonic atomizer in the continuous water radon degassing link are quantitatively controlled in a controllable mode, so that the influence of external factors on degassing stability is reduced;
3) the parameters of the water inlet flow, the injection power of the ultrasonic atomizer 2, the water temperature and the like are monitored, thereby reducing the influence of external factors on the degassing efficiency as much as possible,
compared with the results shown in fig. 2 and fig. 3, the radon water degassing measurement result obtained by the traditional bubbling method is gradually reduced along with the extension of the measurement time, and the radon water degassing measurement result obtained by the ultrasonic atomization method is more stable; the coefficient of variation of the measurement result of the bubbling method is 31.4%, and the coefficient of variation of the measurement result of the ultrasonic atomization method is 16.5%, namely the water radon degassing stability of the ultrasonic atomization method is far higher than that of the water radon degassing stability of the traditional bubbling method;
comparing the results shown in fig. 4 and fig. 5, it can be seen that there is a rising step of the concentration of degassed radon in the continuous ultrasonic nebulization method water radon degassing measurement (the sampling measurement is basically absent), and then the measurement gradually tends to be balanced and stable (the change in the latter half of the measurement result of water radon in Ganjiang ultrasonic nebulization method water radon is mainly due to the influence of the water radon content in the open water area by the factors such as the wind speed, the air pressure, and the air temperature of the water surface). Secondly, for the same water source sample, the water radon measurement result of the ultrasonic atomization method is several times higher than that of the traditional bubbling method, namely the water radon degassing efficiency of the former is much higher than that of the latter.
In conclusion, according to the comparison measurement results, the degassing stability and the degassing efficiency of the ultrasonic atomization water radon degassing measurement method adopted by the invention are superior to those of the traditional bubbling method.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A novel continuous water radon degassing measuring device, which is characterized in that,
the measuring device comprises a degassing container, an ultrasonic atomizer, a water sample uniform stirrer, a radon-containing water sample, a filter, an inverted U-shaped communicating vessel, a radon gas circulation gas inlet, a radon gas circulation gas outlet, an upper flange plate of the degassing container, a lower flange plate of the degassing container, a submersible pump, a wastewater outlet, a cable joint of the degassing container, a silica gel hose, a dryer, a radon measuring instrument and a controller;
the degassing container consists of an upper part and a lower part, the upper part of the degassing container is connected with the lower part of the degassing container through an upper flange plate of the degassing container and a lower flange plate of the degassing container, a sealed chamber is formed between the upper part of the degassing container and the lower part of the degassing container, the water sample uniform stirrer is vertically fixed on the lower surface of the lower flange plate of the degassing container, a water sample containing radon is arranged in the sealed chamber, a stirring propeller of the water sample uniform stirrer is immersed in the water sample containing radon, the ultrasonic atomizer is immersed in the water sample containing radon, and an inverted U-shaped communicating vessel is arranged at the bottom of the degassing container,
the submersible pump is connected with the water inlet of the filter through the silica gel hose, the water outlet of the filter is communicated with the lower part of the degassing container through the silica gel hose,
the upper part of the degassing container is provided with the radon gas circulation gas inlet and the radon gas circulation gas outlet, and the gas outlet of the radon measuring instrument is connected with the radon gas circulation gas inlet through the silica gel hose; the air inlet of the radon measuring instrument is connected with the air outlet of the dryer through the silica gel hose, the air inlet of the dryer is connected with the radon gas circulating air outlet through the silica gel hose,
the upper portion of degasification container is provided with degasification container cable joint, inside the degasification container the even agitator of water sample with ultrasonic nebulizer pass through the cable with degasification container cable joint connects, degasification container cable joint is in the degasification container outside pass through the cable with the controller is connected.
2. The novel continuous radon water degassing measuring device as claimed in claim 1,
the liquid level distance of the radon-containing water sample is 1-3 cm from the upper surface of the ultrasonic atomizer.
3. The novel continuous radon water degassing measuring device as claimed in claim 1,
the upper height and the lower height of the inverted U-shaped communicating vessel are at least set to be 4cm, and the inverted U-shaped communicating vessels with different heights are used for controlling the height of the liquid level of the radon-containing water sample in the degassing container.
4. The novel continuous radon water degassing measuring device as claimed in claim 1,
the controller can simultaneous control the ultrasonic nebulizer with the operation process of the water sample uniform stirrer, the surface of the controller is provided with a display screen, and the display screen is used for displaying data in real time.
5. A novel continuous water radon degassing measurement method is characterized in that,
the measuring method comprises the measuring device, and comprises the following steps:
s1: opening the submersible pump to enable an environment or a water sample to be detected to enter the degassing container through the submersible pump and the filter to form the radon-containing water sample;
s2: the radon-containing water sample in the degassing container can reach a balanced and stable liquid level, and then the redundant water sample is discharged through the waste water discharge port of the inverted U-shaped communicating vessel;
s3: continuously pumping in the water containing radon from the degassing container and continuously discharging the water from the waste water outlet by the submersible pump so that the radon water sample in the degassing container is continuously replaced by an environment or a water sample to be detected to form continuous sampling;
s4: after the liquid level of the radon-containing water sample in the degassing container is balanced and stable, opening the water sample homogenizing stirrer, then opening the ultrasonic atomizer, and continuously atomizing and degassing the radon-containing water sample;
s5: and opening the radon detector after the ultrasonic atomizer is opened, and measuring the concentration of radon gas coming out from the radon-containing water sample in the degassing container so as to calculate the radon concentration in the water of the radon-containing water sample.
6. The novel continuous radon exhalation measuring method as claimed in claim 5,
the radon concentration in water is calculated according to the following formula:
in the formula, CwThe radon concentration is the original radon concentration in the water sample and the unit is Bq/m3；VwIs the volume of the water sample, which is expressed in L; vaThe space volume of the gas phase part at the upper part of the liquid surface of the degassing device is expressed by L; vdAnd VTThe radon measuring instrument is characterized by comprising a radon measuring instrument detector sensitive volume and a measuring system gas circuit connecting pipeline effective volume, wherein the unit of the radon measuring instrument detector sensitive volume and the measuring system gas circuit connecting pipeline effective volume is L; cmMeasuring radon concentration for a radon measuring instrument in Bq/m3(ii) a Eta is degassing efficiency; cBThe unit is Bq/m for the background radon concentration3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389968.4A CN114002392A (en) | 2021-11-22 | 2021-11-22 | Novel continuous water radon degassing measurement device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389968.4A CN114002392A (en) | 2021-11-22 | 2021-11-22 | Novel continuous water radon degassing measurement device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114002392A true CN114002392A (en) | 2022-02-01 |
Family
ID=79929840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111389968.4A Pending CN114002392A (en) | 2021-11-22 | 2021-11-22 | Novel continuous water radon degassing measurement device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114002392A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839318A (en) * | 2022-03-01 | 2022-08-02 | 中国海洋大学 | High-efficient degasification detecting system suitable for high pressure sea water underwater operation |
| CN115015503A (en) * | 2022-05-30 | 2022-09-06 | 中国海洋大学 | Ocean radon in-situ measurement device and measurement method |
| CN115753263A (en) * | 2022-11-22 | 2023-03-07 | 张家口地震监测中心站 | Gas collection device for continuously measuring chemical quantity of non-flowing well |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566177A (en) * | 1979-06-27 | 1981-01-22 | Aloka Co Ltd | Method and device for continuous measurement of underwater radon |
| US4755195A (en) * | 1985-11-12 | 1988-07-05 | Pennwalt Corporation | Method of continuously degassifying water |
| US5980613A (en) * | 1996-02-20 | 1999-11-09 | Hdr Engineering, Inc. | Pressurized radon stripper |
| CN2517732Y (en) * | 2001-12-28 | 2002-10-23 | 宝山钢铁股份有限公司 | Supersonic coupled water feeding and degasifying processing plant |
| CN203191565U (en) * | 2013-05-03 | 2013-09-11 | 贝谷科技股份有限公司 | Device for monitoring radon gas in underground water |
| WO2017080950A1 (en) * | 2015-11-09 | 2017-05-18 | Corosys Prozesssysteme Und Sensoren Gmbh | Method for degassing water, and degassing device |
| CN106959464A (en) * | 2017-03-29 | 2017-07-18 | 南华大学 | The measurement apparatus and measuring method of a kind of precipitation rate of radon |
| CN108519492A (en) * | 2018-04-24 | 2018-09-11 | 中广核贝谷科技股份有限公司 | A kind of continous way water radon method for automatic measurement and device |
| CN213652067U (en) * | 2020-11-23 | 2021-07-09 | 奥顿(杭州)工业设备有限公司 | Intelligent efficient circulating water atomization degassing device |
| CN217981381U (en) * | 2021-11-22 | 2022-12-06 | 东华理工大学 | Novel continuous type water radon degassing measurement device |
-
2021
- 2021-11-22 CN CN202111389968.4A patent/CN114002392A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566177A (en) * | 1979-06-27 | 1981-01-22 | Aloka Co Ltd | Method and device for continuous measurement of underwater radon |
| US4755195A (en) * | 1985-11-12 | 1988-07-05 | Pennwalt Corporation | Method of continuously degassifying water |
| US5980613A (en) * | 1996-02-20 | 1999-11-09 | Hdr Engineering, Inc. | Pressurized radon stripper |
| CN2517732Y (en) * | 2001-12-28 | 2002-10-23 | 宝山钢铁股份有限公司 | Supersonic coupled water feeding and degasifying processing plant |
| CN203191565U (en) * | 2013-05-03 | 2013-09-11 | 贝谷科技股份有限公司 | Device for monitoring radon gas in underground water |
| WO2017080950A1 (en) * | 2015-11-09 | 2017-05-18 | Corosys Prozesssysteme Und Sensoren Gmbh | Method for degassing water, and degassing device |
| CN106959464A (en) * | 2017-03-29 | 2017-07-18 | 南华大学 | The measurement apparatus and measuring method of a kind of precipitation rate of radon |
| CN108519492A (en) * | 2018-04-24 | 2018-09-11 | 中广核贝谷科技股份有限公司 | A kind of continous way water radon method for automatic measurement and device |
| CN213652067U (en) * | 2020-11-23 | 2021-07-09 | 奥顿(杭州)工业设备有限公司 | Intelligent efficient circulating water atomization degassing device |
| CN217981381U (en) * | 2021-11-22 | 2022-12-06 | 东华理工大学 | Novel continuous type water radon degassing measurement device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839318A (en) * | 2022-03-01 | 2022-08-02 | 中国海洋大学 | High-efficient degasification detecting system suitable for high pressure sea water underwater operation |
| CN115015503A (en) * | 2022-05-30 | 2022-09-06 | 中国海洋大学 | Ocean radon in-situ measurement device and measurement method |
| GB2619362A (en) * | 2022-05-30 | 2023-12-06 | Ocean Univ Of China Cn | In-situ measurement device for marine radon and measurement method thereof |
| CN115753263A (en) * | 2022-11-22 | 2023-03-07 | 张家口地震监测中心站 | Gas collection device for continuously measuring chemical quantity of non-flowing well |
| CN115753263B (en) * | 2022-11-22 | 2024-02-02 | 张家口地震监测中心站 | Gas collecting device for continuous measurement of chemical quantity of non-self-flowing well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114002392A (en) | Novel continuous water radon degassing measurement device and method | |
| CN103293094B (en) | A kind of electro-chemical measuring apparatus and using method thereof that quantitatively can change thickness of liquid film | |
| Fulton et al. | Distribution of surface shear forces and bubble characteristics in full-scale gas sparged submerged hollow fiber membrane modules | |
| CN210465220U (en) | Water chemistry measurement circulation loop and experimental kettle | |
| CN217981381U (en) | Novel continuous type water radon degassing measurement device | |
| CN105116131B (en) | Research device and method for displacing hydrates in deposited layer to form anisotropism | |
| CN203310734U (en) | Electrochemical measurement device capable of quantitatively changing thickness of liquid membrane | |
| CN203455192U (en) | Online discharge hole analyzing-sampling device | |
| Alvarez-Cuenca et al. | Oxygen mass transfer in bubble columns | |
| US20150276680A1 (en) | Method for assessing bioaffinity of organic biocarrier for wastewater treatment | |
| CN115753263B (en) | Gas collecting device for continuous measurement of chemical quantity of non-self-flowing well | |
| CN109669027A (en) | A kind of detection device and detection method of for transformer oil vacuum antifoam property | |
| CN106680225A (en) | Sample reaction detection device used for multi-parameter water quality detector | |
| CN111157423A (en) | In-situ real-time representation device and method for liquid holdup of ore heap | |
| CN112255385B (en) | System and method for in-situ continuous long-term determination of greenhouse gas concentration in high-turbidity water body and application | |
| CN114184757B (en) | Method for measuring denitrification rate of suspended matters in water body | |
| CN214289720U (en) | Ultrasonic cleaning device for medical treatment | |
| GB2619362A (en) | In-situ measurement device for marine radon and measurement method thereof | |
| Weng et al. | An ultrasound‐conductivity method for measuring gas holdup in a microbubble‐based gas‐liquid system | |
| CN208969078U (en) | A kind of food inspection device | |
| CN208420512U (en) | A kind of device of rapid-digestion soil | |
| CN111650342A (en) | Scale formation and descaling test platform for pressure-equalizing electrode of cold water system in converter valve | |
| CN217005912U (en) | Small-size fluid instrument testing arrangement | |
| CN213686207U (en) | Underground fluid gas mercury precursor monitoring and gas storage device for earthquake | |
| CN217443104U (en) | Integrative detector of oil viscosity density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |