CN215727854U - A pH value detection device and waste liquid treatment equipment for radioactive liquid - Google Patents
A pH value detection device and waste liquid treatment equipment for radioactive liquid Download PDFInfo
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- CN215727854U CN215727854U CN202122121917.5U CN202122121917U CN215727854U CN 215727854 U CN215727854 U CN 215727854U CN 202122121917 U CN202122121917 U CN 202122121917U CN 215727854 U CN215727854 U CN 215727854U
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Abstract
The utility model discloses a pH value detection device for radioactive liquid and waste liquid treatment equipment, and belongs to the technical field of radioactive waste liquid treatment. The utility model relates to a pH value detection device for radioactive liquid and waste liquid treatment equipment, wherein the pH value detection device comprises a reaction tank, a detection box, a pH value detection piece, a sampling pipe, a flushing pipe and a return pipe, and the reaction tank is used for containing the radioactive liquid; a pH value detection piece is arranged in the detection box; one end of the sampling tube is communicated with the reaction tank, and the other end of the sampling tube is communicated with the detection box; one end of the flushing pipe is communicated with the sampling pipe; one end of the return pipe is communicated with the detection box, and the other end of the return pipe is communicated with the reaction tank. The radioactive liquid in the reaction tank is introduced into the detection box by using the sampling tube, the pH value of the radioactive liquid is detected by the pH value detection piece, and the radioactive liquid in the detection box is recycled to the reaction tank by using the return pipe, so that the pH value can be continuously monitored without polluting the environment; the flushing pipe can supply flushing liquid, so that radioactive decontamination is facilitated.
Description
Technical Field
The utility model relates to the technical field of radioactive liquid waste treatment, in particular to a pH value detection device for radioactive liquid and liquid waste treatment equipment.
Background
The ion exchange treatment method refers to a method of removing harmful ions in wastewater by exchanging ions in the wastewater with an ion exchange resin. However, for radioactive wastewater with high organic content, if the radioactive wastewater is directly treated by adopting the ion exchange technology, the organic content of the ion exchange resin is polluted, the service life of the radioactive wastewater is influenced, and meanwhile, the organic content of the discharged wastewater exceeds the national legal discharge standard.
In the prior art, a method of oxidizing organic matters and then performing coagulation filtration is mostly adopted to pretreat radioactive wastewater, a certain amount of acid or alkali needs to be added in the pretreatment process, so that the pH value of the radioactive wastewater needs to be adjusted to be neutral and then discharged after the treatment is finished, and the pH value of the treated wastewater needs to be monitored. Because the treated wastewater has radioactivity and more pollutants, if the electrode of the pH detection piece is directly inserted into the wastewater, the electrode is easily polluted and loses efficacy; if a flowing radioactive wastewater sample is adopted for monitoring, the wastewater sample is directly discharged, which can cause environmental pollution, and the problem that the electrode needs to be regularly washed after being polluted can not be solved, and radioactive decontamination is difficult when the pH value detection piece is maintained or regularly calibrated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pH value detection device for radioactive liquid and waste liquid treatment equipment, which are used for continuously monitoring the pH value of the radioactive liquid, avoiding environmental pollution and facilitating self-cleaning radioactive decontamination before calibration or maintenance of a pH detection part.
In order to realize the purpose, the following technical scheme is provided:
in one aspect, a pH detection device for radioactive liquid is provided, including:
the reaction tank is used for containing radioactive liquid;
the detection box is internally provided with a pH value detection piece;
one end of the sampling tube is communicated with the reaction tank, and the other end of the sampling tube is communicated with the detection box so as to guide the radioactive liquid in the reaction tank into the detection box; the pH value detection piece is used for detecting the pH value of the radioactive liquid in the detection box;
the washing pipe is communicated with the sampling pipe at one end, and is connected with an external washing liquid supply unit at the other end so as to supply washing liquid into the detection box through the sampling pipe;
and one end of the return pipe is communicated with the detection box, and the other end of the return pipe is communicated with the reaction tank so as to recover the radioactive liquid and/or the flushing liquid in the detection box to the reaction tank.
As an alternative of the pH detection device, one end of the sampling tube connected with the reaction tank is located below the liquid level surface of the reaction tank; and/or the presence of a gas in the gas,
and one end of the return pipe, which is connected with the reaction tank, is positioned above the liquid level surface of the reaction tank.
As an alternative to the pH detection device, the return line is provided with a circulation pump for providing power to return the radioactive liquid and/or the washing liquid in the detection tank to the reaction cell.
As an alternative to the pH detection means, the circulation pump is located below the reaction tank.
As an alternative to the pH detection device, the detection box is located below the reaction cell.
As an alternative to the pH detection device, the end of the sampling tube connected to the detection box is lower than the end of the return tube connected to the detection box.
As an alternative to the pH detection device, the sampling tube is provided with an isolation valve upstream of the junction of the flush tube and the sampling tube and the detection chamber downstream of the junction of the flush tube and the sampling tube in the flow direction of the radioactive liquid.
As an alternative to the pH detection device, the detection box is provided with a box cover that can seal the detection box.
As an alternative to the pH detection means, the flushing pipe is provided with a flushing valve.
In another aspect, there is provided a waste liquid treatment apparatus including the pH detection device for a radioactive liquid as described in any one of the above.
Compared with the prior art, the utility model has the beneficial effects that:
according to the pH value detection device for radioactive liquid and the waste liquid treatment equipment, provided by the utility model, the radioactive liquid in the reaction tank is introduced into the detection box by using the sampling tube, the pH value of the radioactive liquid is detected by using the pH value detection part, and the radioactive liquid in the detection box is recycled to the reaction tank by using the return pipe, so that the aim of continuously monitoring the pH value of the radioactive liquid is fulfilled, the recycling of the radioactive liquid is realized, and the environment is not polluted; meanwhile, the flushing pipe can supply flushing liquid, self-cleaning can be realized, so that the electrode, the detection box and part of the sampling pipe of the pH value detection piece can be flushed, and radioactive decontamination is facilitated during maintenance and periodic calibration of the pH value detection piece.
Drawings
Fig. 1 is a schematic structural diagram of a pH detection device for radioactive liquid according to an embodiment of the present invention.
Reference numerals:
1. a reaction tank;
2. a detection box;
3. a pH value detection member;
4. a sampling tube; 41. an isolation valve;
5. a flush tube; 51. a flush valve;
6. a return pipe;
7. and a circulating pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1, the present embodiment provides a pH detection device for radioactive liquid, which includes a reaction cell 1, a detection box 2, a pH detection unit 3, a sampling tube 4, a flushing tube 5 and a return tube 6, wherein the reaction cell 1 is used for containing radioactive liquid; a pH value detection piece 3 is arranged in the detection box 2; illustratively, the pH detecting member 3 is an on-line pH meter. One end of the sampling tube 4 is communicated with the reaction tank 1, and the other end is communicated with the detection box 2, so that the radioactive liquid in the reaction tank 1 is guided into the detection box 2; the pH value detection piece 3 is used for detecting the pH value of the radioactive liquid in the detection box 2; one end of the flushing pipe 5 is communicated with the sampling pipe 4, and the other end is used for being connected with an external flushing liquid supply unit so as to supply flushing liquid into the detection box 2 through the sampling pipe 4; illustratively, the flushing fluid is demineralized water. One end of the return pipe 6 is communicated with the detection box 2, and the other end is communicated with the reaction tank 1 so as to recover the radioactive liquid and/or the flushing liquid in the detection box 2 to the reaction tank 1.
The radioactive liquid in the reaction tank 1 is introduced into the detection box 2 by using the sampling tube 4, the pH value of the radioactive liquid is detected by using the pH value detection part 3, and the radioactive liquid in the detection box 2 is recovered to the reaction tank 1 by using the return tube 6, so that the aim of continuously monitoring the pH value of the radioactive liquid is fulfilled, the recovery of the radioactive liquid is realized, and the environment is not polluted; meanwhile, the flushing pipe 5 can supply flushing liquid to flush the electrodes of the pH value detecting element 3, the detecting box 2 and part of the sampling pipe 4, so that radioactive decontamination is facilitated during maintenance and periodic calibration of the pH value detecting element 3.
Optionally, the detection box 2 is located below the reaction cell 1. Optionally, one end of the sampling tube 4 connected to the reaction tank 1 is located below the liquid level surface of the reaction tank 1, so as to facilitate the outflow of the radioactive liquid in the reaction tank 1. Further, one end of the return pipe 6 connected with the reaction tank 1 is located above the liquid level of the reaction tank 1 to prevent the radioactive liquid in the reaction tank 1 from flowing back into the return pipe 6.
Optionally, the sampling tube 4 is provided with an isolation valve 41, the isolation valve 41 being located upstream of the junction of the wash tube 5 and the sampling tube 4, and the detection chamber 2 being located downstream of the junction of the wash tube 5 and the sampling tube 4, in the direction of flow of the radioactive liquid. The isolation valve 41 may be closed to isolate the radioactive liquid when the pH detection member 3 is serviced or flushed.
Optionally, the flushing pipe 5 is provided with a flushing valve 51. The flushing valve 51 is a normally closed valve, and is opened only when the isolation valve 41 is closed and it is necessary to flush the pH detection member 3, and is closed immediately after the end of the flushing.
Optionally, the return pipe 6 is provided with a circulation pump 7, and the circulation pump 7 is used for providing power to return the radioactive liquid and/or the washing liquid in the detection box 2 to the reaction tank 1. Along the flow direction of radioactive liquid, the downstream of detection case 2 is located to circulating pump 7, and rearmounted circulating pump 7 both provides circulation power, has guaranteed again not to pollute the sample, influences the sample representativeness, helps improving the detection precision of pH value. Optionally, the circulating pump 7 is located below the reaction tank 1, so that the setting position of the circulating pump 7 is lower than that of the reaction tank 1, and after the isolation valve 41 is opened, the impeller of the circulating pump 7 can be immersed by the radioactive liquid, and the circulating pump 7 does not need to be filled with water when being started, thereby achieving the effects of simplifying the operation and protecting the circulating pump 7.
Alternatively, the end of the sampling tube 4 connected to the detection box 2 is lower than the end of the return tube 6 connected to the detection box 2, so as to form a low-in high-out structure, and further to submerge the electrode of the pH detection member 3 in the radioactive liquid in the detection box 2, so as to prevent the electrode of the pH detection member 3 from losing efficacy due to long-term dehydration.
Optionally, the detection box 2 is provided with a box cover capable of sealing the detection box 2, so that the radioactive liquid in the detection box 2 can be prevented from overflowing, and the environment pollution is avoided.
Illustratively, the work flow of the pH detection apparatus for a radioactive liquid provided in this embodiment is as follows:
during normal pH value monitoring, install pH value detection piece 3 and sealed detection case 2 earlier, open isolating valve 41, and start circulating pump 7, radioactive liquid in the reaction tank 1 flows into detection case 2 through sampling tube 4, can utilize pH value detection piece 3 continuous monitoring radioactive liquid's pH value, radioactive liquid in the detection case 2 can flow back to the reaction tank 1 through back flow 6 again, both realized the continuous measurement of radioactive liquid pH value, the backward flow of radioactive liquid has been guaranteed again, can not the polluted environment. During this process, the flush valve 51 is kept closed at all times.
When the electrode of the pH value detection piece 3 is overhauled or calibrated, the circulating pump 7 and the isolating valve 41 are closed firstly, then the flushing valve 51 is opened, the circulating pump 7 is started again, flushing liquid supplied by the flushing pipe 5 flows into the detection box 2 through the sampling pipe 4, the electrode of the pH value detection piece 3, the detection box 2 and part of the sampling pipe 4 (namely, the sampling pipe 4 is positioned at a pipe section between the flushing pipe 5 and the detection box 2) can be flushed, illustratively, the flushing time is 10 minutes, then the circulating pump 7 is closed, radioactive decontamination is completed, and then the overhauling or calibration operation can be carried out.
The embodiment also provides waste liquid treatment equipment, which comprises the pH value detection device for the radioactive liquid. By applying the pH value detection device, the pH value of the radioactive liquid can be continuously monitored, the radioactive liquid is prevented from polluting the environment, and radioactive self-cleaning and decontamination before maintenance are facilitated.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A pH detection device for radioactive liquids, comprising:
the reaction tank (1), the said reaction tank (1) is used for holding the radioactive liquid;
the device comprises a detection box (2), wherein a pH value detection piece (3) is arranged in the detection box (2);
a sampling tube (4), one end of the sampling tube (4) is communicated with the reaction pool (1), and the other end of the sampling tube is communicated with the detection box (2) so as to guide the radioactive liquid in the reaction pool (1) into the detection box (2); the pH value detection piece (3) is used for detecting the pH value of the radioactive liquid in the detection box (2);
the washing pipe (5), one end of the washing pipe (5) is communicated with the sampling pipe (4), and the other end of the washing pipe is used for being connected with an external washing liquid supply unit so as to supply washing liquid into the detection box (2) through the sampling pipe (4);
the backflow pipe (6), one end of the backflow pipe (6) is communicated with the detection box (2), the other end of the backflow pipe is communicated with the reaction pool (1), and therefore the radioactive liquid and/or the flushing liquid in the detection box (2) are recycled to the reaction pool (1).
2. The pH value detection device according to claim 1, wherein one end of the sampling tube (4) connected with the reaction tank (1) is positioned below the liquid level surface of the reaction tank (1); and/or the presence of a gas in the gas,
and one end of the return pipe (6) connected with the reaction tank (1) is positioned above the liquid level surface of the reaction tank (1).
3. The pH detection device according to claim 1 or 2, wherein the return pipe (6) is provided with a circulation pump (7), the circulation pump (7) being adapted to provide power to return the radioactive liquid and/or the rinsing liquid in the detection chamber (2) to the reaction cell (1).
4. The pH detection device according to claim 3, wherein the circulation pump (7) is located below the reaction cell (1).
5. The pH detection apparatus according to claim 1 or 2, wherein the detection box (2) is located below the reaction cell (1).
6. The pH detecting device according to claim 1, wherein the end of the sampling tube (4) connected to the detection chamber (2) is lower than the end of the return tube (6) connected to the detection chamber (2).
7. The pH detection device according to claim 1, characterized in that the sampling tube (4) is provided with an isolation valve (41), the isolation valve (41) being located upstream of the connection of the flush tube (5) and the sampling tube (4) and the detection tank (2) being located downstream of the connection of the flush tube (5) and the sampling tube (4) in the flow direction of the radioactive liquid.
8. The pH detecting device according to claim 1, wherein the detecting chamber (2) is provided with a chamber cover capable of sealing the detecting chamber (2).
9. The pH detection device according to claim 1, characterized in that the flush tube (5) is provided with a flush valve (51).
10. A waste liquid treatment apparatus comprising the pH detection device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122121917.5U CN215727854U (en) | 2021-09-03 | 2021-09-03 | A pH value detection device and waste liquid treatment equipment for radioactive liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122121917.5U CN215727854U (en) | 2021-09-03 | 2021-09-03 | A pH value detection device and waste liquid treatment equipment for radioactive liquid |
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| Publication Number | Publication Date |
|---|---|
| CN215727854U true CN215727854U (en) | 2022-02-01 |
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| CN202122121917.5U Active CN215727854U (en) | 2021-09-03 | 2021-09-03 | A pH value detection device and waste liquid treatment equipment for radioactive liquid |
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- 2021-09-03 CN CN202122121917.5U patent/CN215727854U/en active Active
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