阅读说明：本技术 一种医用放射性废水实时监测及控制的系统和方法 (System and method for monitoring and controlling medical radioactive wastewater in real time ) 是由 杨升富 列润洪 李雨鹏 欧伟光 徐浩 于 2020-07-22 设计创作，主要内容包括：本发明公开了一种医用放射性废水实时监测及控制的系统和方法,该系统包括依次连接的核辐射探头、核辐射检测仪、微控制器和上位机终端；所述核辐射检测仪、微控制器和上位机终端均安装于医生工作站处,核辐射探头安装于衰变池、集水井的内侧顶端。本发明保证放射性废水达标排放,且使衰变池废水自动控制。(The invention discloses a system and a method for monitoring and controlling medical radioactive wastewater in real time, wherein the system comprises a nuclear radiation probe, a nuclear radiation detector, a microcontroller and an upper computer terminal which are sequentially connected; the nuclear radiation detector, the microcontroller and the upper computer terminal are all installed at a doctor workstation, and the nuclear radiation probe is installed at the top end of the inner side of the decay pool and the water collecting well. The invention ensures that the radioactive wastewater reaches the standard and is discharged, and the wastewater of the decay tank is automatically controlled.)

1. The utility model provides a system for medical radioactive wastewater real-time supervision and control, uses at medical radioactive wastewater treatment center, its characterized in that includes: the nuclear radiation detector comprises a nuclear radiation probe, a nuclear radiation detector, a microcontroller and an upper computer terminal which are connected in sequence; the medical radioactive wastewater treatment center comprises a decay tank and a water collecting well which are connected in sequence; the water inlet of the decay tank is used for connecting a waste water discharge end, and the water outlet of the water collecting well is used for connecting a hospital sewage treatment center; a submersible sewage pump is arranged in each of the decay tank and the water collecting well and is connected to the microcontroller through a circuit; a gate valve is arranged on a pipeline connected with the water inlet of the decay tank, a pipeline connected between the water outlet of the decay tank and the water inlet of the water collecting well, and a pipeline connected with the water outlet of the water collecting well, and the gate valve is connected to the microcontroller through a circuit;

the nuclear radiation detector, the microcontroller and the upper computer terminal are all installed at a doctor workstation, and the nuclear radiation probe is installed at the top end of the inner side of the decay pool and the water collecting well.

2. The system for real-time monitoring and controlling of radioactive medical wastewater according to claim 1, further comprising: radar liquid level detector, radar liquid level detector installs in the side top position of decay pond and water-collecting well, radar liquid level detector, microcontroller and host computer terminal connect gradually, microcontroller still all connects with gate valve controlling means, water pump controlling means.

3. The system for monitoring and controlling medical radioactive wastewater in real time according to claim 1, wherein two slag sinks are further arranged between the decay tank and the wastewater discharge end, and the two slag sinks are a first slag sink and a second slag sink respectively; the decay pond has threely, and three decay pond is first decay pond, second decay pond, third decay pond respectively, and first detritus pond, second detritus pond, first decay pond, second decay pond, third decay pond set up side by side in proper order.

4. The system for real-time monitoring and controlling of medical radioactive wastewater according to claim 1, wherein the upper computer terminal is installed with a monitoring and controlling application program, and is used for dynamically displaying the activity information, the start and stop of the submersible sewage pump, the water inlet gate valve and the water outlet gate valve.

5. A medical radioactive wastewater real-time monitoring and control method is characterized by comprising the following steps:

s1, the radioactive wastewater discharged from the wastewater discharge end enters a slag settling tank, and the radioactive wastewater is subjected to slag settling treatment in the slag settling tank;

s2, after the sediment treatment, radioactive waste water is discharged from the sediment tank to the decay tank, the radioactive waste water is decayed in the decay tank, after the radar liquid level detector detects that the decay tank is filled with the radioactive waste water, the microcontroller starts to time the half-life period of the isotope, and after the half-life period of the isotope is 80d, the microcontroller controls a gate valve control device and a water pump control device to enable the decayed radioactive waste water to be poured into a water collecting well from the decay tank;

s3, detecting the radioactivity of the radioactive wastewater in the water collecting well by the nuclear radiation probe and the nuclear radiation detector, and if the radioactivity of the radioactive wastewater in the water collecting well meets a preset standard, controlling the opening of a drainage gate valve of the water collecting well by the microcontroller, and filling the wastewater into a sewage pipe network of a hospital.

6. The method of claim 5, wherein the predetermined standard is DB44/26-2001 Water pollution emission Limit.

7. The method according to claim 5, wherein step S1 includes: and the radioactive wastewater discharged from the wastewater discharge end enters the first slag settling tank or the second slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used.

8. The method of claim 7, wherein the radioactive waste water is discharged into the decay tank every six months of use of the first or second grit chamber.

9. The method according to claim 7, wherein step S2 includes: the first slag settling tank and the second slag settling tank alternately discharge radioactive wastewater into the first decay tank, the second decay tank or the third decay tank, the first decay tank, the second decay tank and the third decay tank are alternately used, and after the radar liquid level detector detects that one decay tank is filled with the radioactive wastewater, the next decay tank is used for containing the radioactive wastewater.

Technical Field

The invention relates to the technical field of medical sewage treatment, in particular to a system and a method for monitoring and controlling medical radioactive wastewater in real time.

Background

The nuclear medicine department of hospitals uses isotopes to perform imaging diagnosis and treatment, but the excrement generated after patients take and inject radioactive isotopes in the diagnosis and treatment processes carries radioactive wastewater, and the radioactive wastewater needs to be properly treated so that the radioactive wastewater can be discharged into water or urban sewers after the radioactive wastewater is reduced below the safety value regulated by the state. The isotope decay tank monitoring method of hospital at present is that professional gets the water sample from decay pond water collection well head, then determines the radioactivity of water sample with the water sample, decides to operate 3 discrepancy of decay pond waste water according to the measuring result at last, and such monitoring method wastes time and energy, has not satisfied the demand of hospital development yet.

Therefore, there is a need in the industry to develop a system or method for real-time monitoring and discharge control of medical radioactive isotope decay tank wastewater, so as to realize automatic control of decay tank wastewater.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a system and a method for monitoring and controlling medical radioactive wastewater in real time, which are used for monitoring and controlling automatic discharge in real time.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a system for medical radioactive wastewater real-time supervision and control, uses at medical radioactive wastewater treatment center, its characterized in that includes: the nuclear radiation detector comprises a nuclear radiation probe, a nuclear radiation detector, a microcontroller and an upper computer terminal which are connected in sequence; the medical radioactive wastewater treatment center comprises a decay tank and a water collecting well which are connected in sequence; the water inlet of the decay tank is used for connecting a waste water discharge end, and the water outlet of the water collecting well is used for connecting a hospital sewage treatment center; a submersible sewage pump is arranged in each of the decay tank and the water collecting well and is connected to the microcontroller through a circuit; a gate valve is arranged on a pipeline connected with the water inlet of the decay tank, a pipeline connected between the water outlet of the decay tank and the water inlet of the water collecting well, and a pipeline connected with the water outlet of the water collecting well, and the gate valve is connected to the microcontroller through a circuit;

the nuclear radiation detector, the microcontroller and the upper computer terminal are all installed at a doctor workstation, and the nuclear radiation probe is installed at the top end of the inner side of the decay pool and the water collecting well.

Preferably, the system further comprises: radar liquid level detector, radar liquid level detector installs in the side top position of decay pond and water-collecting well, radar liquid level detector, microcontroller and host computer terminal connect gradually, microcontroller still all connects with gate valve controlling means, water pump controlling means.

Preferably, two slag sinks are arranged between the decay tank and the waste water discharge end, and the two slag sinks are respectively a first slag sink and a second slag sink; the decay pond has threely, and three decay pond is first decay pond, second decay pond, third decay pond respectively, and first detritus pond, second detritus pond, first decay pond, second decay pond, third decay pond set up side by side in proper order.

Preferably, the upper computer terminal is provided with a monitoring control application program and is used for dynamically displaying the start and stop of the radioactivity information, the submersible sewage pump, the water inlet gate valve and the water outlet gate valve.

A method for real-time monitoring of medical radioisotope decay tank wastewater, comprising:

s1, the radioactive wastewater discharged from the wastewater discharge end enters a slag settling tank, and the radioactive wastewater is subjected to slag settling treatment in the slag settling tank;

s2, after the sediment treatment, radioactive waste water is discharged from the sediment tank to the decay tank, the radioactive waste water is decayed in the decay tank, after the radar liquid level detector detects that the decay tank is filled with the radioactive waste water, the microcontroller starts to time the half-life period of the isotope, and after the half-life period of the isotope is 80d, the microcontroller controls a gate valve control device and a water pump control device to enable the decayed radioactive waste water to be poured into a water collecting well from the decay tank;

s3, detecting the radioactivity of the radioactive wastewater in the water collecting well by the nuclear radiation probe and the nuclear radiation detector, and if the radioactivity of the radioactive wastewater in the water collecting well meets a preset standard, controlling the opening of a drainage gate valve of the water collecting well by the microcontroller, and filling the wastewater into a sewage pipe network of a hospital.

Preferably, the predetermined standard is DB44/26-2001 Water pollution emission Limit.

Preferably, step S1 includes: and the radioactive wastewater discharged from the wastewater discharge end enters the first slag settling tank or the second slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used.

Preferably, the radioactive waste water is discharged into the decay tank every six months of use of the first or second grit chamber.

Preferably, step S2 includes: the first slag settling tank and the second slag settling tank alternately discharge radioactive wastewater into the first decay tank, the second decay tank or the third decay tank, the first decay tank, the second decay tank and the third decay tank are alternately used, and after the radar liquid level detector detects that one decay tank is filled with the radioactive wastewater, the next decay tank is used for containing the radioactive wastewater.

Compared with the prior art, the invention has the following advantages:

the invention relates to a microcontroller for controlling a sediment tank to discharge radioactive wastewater to a decay tank, wherein the radioactive wastewater is decayed in the decay tank, after a radar liquid level detector detects that the decay tank is filled with the radioactive wastewater, the microcontroller starts to time the half-life period of isotope, after the half-life period of the isotope is 80d, the microcontroller controls a gate valve control device and a water pump control device to ensure that the decayed radioactive wastewater is poured into a water collecting well from the decay tank, a nuclear radiation detector detects the radioactivity of the radioactive wastewater in the water collecting well, if the radioactivity of the radioactive wastewater in the water collecting well meets a preset standard, the microcontroller controls a water collecting well drain gate valve to be opened, the wastewater is poured into a hospital sewage pipe network, thereby realizing the real-time monitoring and discharge control of the medical radioactive isotope decay tank wastewater, ensuring that the radioactive wastewater reaches the standard to be discharged, and automatically controlling the decay tank wastewater, and solving the difficulty of the hospital nuclear medicine decay tank management, bringing considerable social and economic benefits.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the structure of a radioactive wastewater treatment center for medical use according to the present invention.

Fig. 2 is a schematic structural diagram of a system for real-time monitoring and control of radioactive medical wastewater according to the present invention.

Wherein: 1 is first detritus pond, 2 is the second detritus pond, and 3 is first decay pond, and 4 are the second decay pond, and 5 is the third decay pond, and 6 are the sump pit, and 7 are hospital sewage treatment center, and 8 are the waste water discharge end, and 9 are stealthily dirty pump, and 10 are the gate valve.

Detailed Description

The invention is further illustrated by the following figures and examples.

Referring to fig. 1-2, a system for real-time monitoring and controlling medical radioactive wastewater, applied to a medical radioactive wastewater treatment center, comprises: the nuclear radiation detector comprises a nuclear radiation probe, a nuclear radiation detector, a microcontroller and an upper computer terminal which are connected in sequence; the medical radioactive wastewater treatment center comprises at least two sediment tanks, at least two decay tanks and a water collecting well 6; the slag basin is provided with a slag basin water inlet and a slag basin water outlet, the decay basin is provided with a decay basin water inlet and a decay basin water outlet, the water collecting well 6 is provided with a water collecting well 6 water inlet and a water collecting well 6 water outlet, the slag basin water inlet is used for connecting a waste water discharge end 8, the slag basin water outlet is connected with the decay basin water inlet through a pipeline, the decay basin water outlet is connected with the water collecting well 6 water inlet through a pipeline, and the water collecting well 6 water outlet is used for connecting a hospital sewage treatment center 7; the sludge basin, the decay basin and the water collecting well 6 are all provided with a submersible sewage pump 9, and the submersible sewage pump 9 is connected to the microcontroller through a circuit; a gate valve 10 is arranged on a pipeline connected with a water inlet of the slag settling tank, a pipeline connected between a water outlet of the slag settling tank and a water inlet of the decay tank, a pipeline connected between a water outlet of the decay tank and a water inlet of the water collecting well 6, and a pipeline connected with a water outlet of the water collecting well 6, and the gate valve 10 is connected to the microcontroller through a circuit; the nuclear radiation detector, the microcontroller and the upper computer terminal are all installed at a doctor workstation, and the nuclear radiation probe is installed at the top end of the inner side of the decay pool and the water collecting well 6.

In this embodiment, the monitoring system further includes: radar liquid level detector, radar liquid level detector installs in the side top position of detritus pond, decay pond and collector well 6, radar liquid level detector, microcontroller and host computer terminal connect gradually, microcontroller still all connects with gate valve 10 controlling means, water pump control device.

In this embodiment, there are two slag sinks, which are a first slag sink 1 and a second slag sink 2 respectively; the decay pond has threely, and three decay pond is first decay pond 3, second decay pond 4, third decay pond 5 respectively, and first detritus pond 1, second detritus pond 2, first decay pond 3, second decay pond 4, third decay pond 5 set up side by side in proper order.

In this embodiment, the upper computer terminal is installed with a monitoring control application program, and the upper computer terminal is used for dynamically displaying the start and stop of the radioactivity information, the submersible sewage pump 9, the water inlet gate valve 10 and the water outlet gate valve 10.

A method for monitoring the wastewater of the medical radioactive isotope decay tank in real time, which is suitable for the system for monitoring and controlling the medical radioactive wastewater in real time, comprises the following steps:

s1, the radioactive wastewater discharged from the wastewater discharge end 8 enters a slag settling tank, and the radioactive wastewater is subjected to slag settling treatment in the slag settling tank; further, step S1 includes: the radioactive wastewater discharged from the wastewater discharge end 8 enters the first slag settling tank 1 or the second slag settling tank 2, and the first slag settling tank 1 and the second slag settling tank 2 are alternately used.

Further, the radioactive waste water is discharged into the decay tank every six months of use of the first or second slag trap 1 or 2.

S2, after the sediment treatment, radioactive waste water is discharged from the sediment tank to the decay tank, the radioactive waste water is decayed in the decay tank, after the radar liquid level detector detects that the decay tank is filled with the radioactive waste water, the microcontroller starts to time the half-life period of the isotope, and after the half-life period of the isotope is 80d, the microcontroller controls the gate valve 10 control device and the water pump control device to enable the decayed radioactive waste water to be poured into the water collecting well 6 from the decay tank;

in the present embodiment, step S2 includes: the first slag trap 1 and the second slag trap 2 alternately discharge radioactive waste water into the first decay trap 3, the second decay trap 4 or the third decay trap 5, the first decay trap 3, the second decay trap 4 and the third decay trap 5 are alternately used, and after the radar liquid level detector detects that one of the decay traps is filled with the radioactive waste water, the next decay trap is used for containing the radioactive waste water. The decay time of the first decay pool 3, the second decay pool 4 and the third decay pool 5 is 80 d.

S3, detecting the radioactivity of the radioactive wastewater in the water collecting well 6 by the nuclear radiation probe and the nuclear radiation detector, and if the radioactivity of the radioactive wastewater in the water collecting well 6 meets a preset standard, controlling the drainage gate valve 10 of the water collecting well 6 to open by the microcontroller, and filling the wastewater into a hospital sewage pipe network. In this embodiment, the preset standard is DB44/26-2001 Water pollution emission Limit (maximum allowable emission concentration of pollutants in the first class: total alpha is less than or equal to 1.0Bq/L, total beta is less than or equal to 10 Bq/L).

When the device is used, a worker of a doctor workstation clicks a button for starting a water inlet gate valve 10 of a first sediment tank 1 on an upper computer terminal, a microcontroller controls the water inlet gate valve 10 of the first sediment tank 1 to be opened, radioactive wastewater discharged from a wastewater discharge end 8 enters the first sediment tank 1, the radioactive wastewater is subjected to sediment treatment in the first sediment tank 1, after the first sediment tank 1 is used for six months, the microcontroller controls the water inlet gate valve 10 of the first sediment tank 1 to be closed, the water inlet gate valve 10 of a second sediment tank 2 to be opened, the radioactive wastewater discharged from the wastewater discharge end 8 enters a second sediment tank 2, and the radioactive wastewater is subjected to sediment treatment in the second sediment tank 2; after the first slag settling tank 1 is used for six months, the outlet gate valve 10 of the first slag settling tank 1 is opened, the inlet gate valve 10 of the first decay tank 3 is controlled to be opened, radioactive wastewater in the first slag settling tank 1 is discharged into the first decay tank 3 through the submersible sewage pump 9 in the first slag settling tank 1 and is decayed in the first decay tank 3, when the radar liquid level detector detects that the first decay tank 3 is filled with the radioactive wastewater, the inlet gate valve 10 of the first decay tank 3 is closed, the inlet gate valve 10 of the second decay tank 4 is opened, the radioactive wastewater in the first slag settling tank 1 enters the second decay tank 4, and when the second decay tank 4 is filled with the radioactive wastewater, the inlet gate valve 10 of the second decay tank 4 is closed, the inlet gate valve 10 of the third decay tank 5 is opened, and the radioactive wastewater in the first slag settling tank 1 enters the third decay tank 5 for decay; when the radar liquid level detector detects that the first decay tank 3 is filled with radioactive wastewater, the microcontroller starts to time the half-life of the isotope, after the half-life of 80d, the water outlet gate valve 10 of the first decay tank 3 is opened, the water inlet gate valve 10 of the water collecting well 6 is opened, the wastewater in the first decay tank 3 is discharged into the water collecting well 6 through the submersible sewage pump 9 in the first decay tank 3, the nuclear radiation probe in the water collecting well 6 acquires the radioactive activity data of the radioactive wastewater in the water collecting well 6, and if the nuclear radiation detector detects that the radioactive activity of the radioactive wastewater in the water collecting well 6 meets the water pollution discharge limit DB44/26-2001 (the highest allowable discharge concentration of the first type pollutant: total alpha is less than or equal to 1.0Bq/L, and total beta is less than or equal to 10 Bq/L). The water outlet gate valve 10 of the water collecting well 6 is opened, and the wastewater in the water collecting well 6 is discharged to the hospital wastewater treatment center 7 through the submersible sewage pump 9 in the water collecting well 6 for medical wastewater treatment, wherein the direction shown by the arrow in fig. 1 is the flow direction of the wastewater.

The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.