阅读说明：本技术 一种医用放射性废水衰变池及处理方法 (Medical radioactive wastewater decay pool and treatment method ) 是由 杨升富 李莉 吕明月 欧伟光 徐浩 于 2020-06-08 设计创作，主要内容包括：本发明涉及一种医用放射性废水衰变池,包括至少两个沉渣池、至少两个衰变池、集水井、信号报警装置、闸阀控制装置、水泵控制装置；沉渣池、衰变池、集水井上均设有进水口和出水口,沉渣池进水口用于连接废水排放端,沉渣池出水口通过管道连接衰变池进水口,衰变池出水口通过管道连接集水井进水口,集水井出水口用于连接医院污水处理中心；沉渣池、衰变池、集水井上均设有浮球液位控制器和潜污泵,浮球液位控制器连接信号报警装置,潜污泵连接水泵控制装置；各连接管道上均设有闸阀,闸阀连接闸阀控制装置。本发明还涉及一种医用放射性废水衰变池的处理方法,本发明能确保放射性废水中的同位素到达半衰期,确保放射性废水达标排放,减少污染。(The invention relates to a medical radioactive wastewater decay tank, which comprises at least two sediment tanks, at least two decay tanks, a water collecting well, a signal alarm device, a gate valve control device and a water pump control device; the water inlet and the water outlet are arranged on the slag basin, the decay basin and the water collecting well, the water inlet of the slag basin is connected with the waste water discharging end, the water outlet of the slag basin is connected with the water inlet of the decay basin through a pipeline, the water outlet of the decay basin is connected with the water inlet of the water collecting well through a pipeline, and the water outlet of the water collecting well is connected with the hospital sewage treatment center; the slag basin, the decay basin and the water collecting well are all provided with a floating ball liquid level controller and a submersible sewage pump, the floating ball liquid level controller is connected with a signal alarm device, and the submersible sewage pump is connected with a water pump control device; and each connecting pipeline is provided with a gate valve which is connected with a gate valve control device. The invention also relates to a treatment method of the medical radioactive wastewater decay tank, which can ensure that the isotope in the radioactive wastewater reaches the half-life period, ensure that the radioactive wastewater reaches the standard and is discharged, and reduce pollution.)

1. A radioactive waste water decay pond for medical use, which is characterized in that: comprises at least two sediment pools, at least two decay pools, a water collecting well and an electric control system; 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 is provided with a water collecting well water inlet and a water collecting well water outlet, the slag basin water inlet is connected with a waste water discharge end, 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 water inlet through a pipeline, and the water collecting well water outlet is connected with a hospital sewage treatment center; the electric control system comprises a signal alarm device, a gate valve control device and a water pump control device, floating ball liquid level controllers are arranged on the slag settling tank, the decay tank and the water collecting well, and the floating ball liquid level controllers are connected to the signal alarm device through a circuit; the sludge basin, the decay basin and the water collecting well are all provided with submersible sewage pumps which are connected to a water pump control device through circuits; and the pipeline connected with the water inlet of the sediment tank, the pipeline connected between the water outlet of the sediment tank and the water inlet of the decay tank, the pipeline connected between the water outlet of the decay tank and the water inlet of the water collecting well and the pipeline connected with the water outlet of the water collecting well are all provided with gate valves, and the gate valves are connected to a gate valve control device through circuits.

2. The radioactive waste water decay tank for medical use of claim 1, wherein: the two slag settling tanks are respectively a first slag settling tank and a second slag settling tank; the number of the decay ponds is three, and the three decay ponds are respectively a first decay pond, a second decay pond and a third decay pond.

3. The radioactive waste water decay tank for medical use of claim 2, wherein: the first slag settling tank, the second slag settling tank, the first decay tank, the second decay tank and the third decay tank are sequentially arranged side by side.

4. The radioactive waste water decay tank for medical use of claim 1, wherein: a stainless steel slag separation net is arranged in the slag settling tank.

5. A method for treating radioactive medical wastewater decay ponds according to any one of claims 1 to 4, wherein the method comprises the following steps: the method comprises the following steps:

(1) radioactive wastewater discharged from a wastewater discharge end enters a first slag settling tank or a second slag settling tank, the radioactive wastewater is subjected to slag settling treatment in the slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used;

(2) the radioactive waste water is discharged from the first decay tank, the second decay tank or the third decay tank alternatively, the radioactive waste water is decayed in the decay tanks, the first decay tank, the second decay tank and the third decay tank are used alternatively, when one decay tank is filled with the radioactive waste water, the next decay tank is used for containing the radioactive waste water, the decay tank filled with the radioactive waste water is discharged into the water collecting well after reaching the decay period, a waste water sample is extracted from the water collecting well for detection, the waste water is discharged into a hospital sewage treatment center from the water collecting well after the detection is qualified, and if the detection is unqualified, the waste water is continuously remained in the water collecting well for decay until the waste water is discharged into the hospital sewage treatment center after the detection is qualified.

6. The method for treating the radioactive waste water decay pond for medical use according to claim 5, wherein: the first slag settling tank and the second slag settling tank are used alternately once every six months.

7. The method for treating the radioactive waste water decay pond for medical use according to claim 6, wherein: and discharging radioactive wastewater into the decay tank every six months of use of the first slag settling tank or the second slag settling tank.

8. The method for treating the radioactive waste water decay pond for medical use according to claim 5, wherein: the decay time of the first decay tank, the second decay tank and the third decay tank is two months.

Technical Field

The invention relates to the technical field of medical sewage treatment, in particular to a medical radioactive wastewater decay tank and a treatment method.

Background

At present, the nuclear medicine department of the medical institution widely uses isotopes to carry out development diagnosis and treatment, such as SPECT and PET-CT diagnosis and examination by using radioactive isotopes, carrying out isotope A cancer treatment, bone metastasis treatment and the like, and simultaneously uses the isotopes to carry out animal experimental research on animals, thereby bringing a new diagnosis and treatment method for the medical institution.

With the continuous development of nuclear medicine technology in China, the number of hospitals developing nuclear medicine diagnosis and treatment projects in China is gradually increased year by year, and the amount of radioactive waste water is increased continuously. The wide variety of radioactive isotopes used in nuclear medicine brings great difficulty to the treatment of radioactive medical wastewater. The unqualified discharge of the radioactive medical wastewater can not only cause serious environmental pollution, but also threaten the life health and safety of people.

The hospital generally adopts a decay method to treat the wastewater containing the radioactive isotope, and the application of a decay tank can realize the effective treatment of the radioactive medical wastewater and the discharge of the radioactive medical wastewater after reaching the standard, wherein the decay tank is continuous and intermittent, and is most commonly continuous. At present, the self-flowing three-stage series decay tank is commonly used by medical institutions, and due to the mobility of radioactive waste water of the three decay tanks, the radioactive waste water can be discharged from a sewage port without completely reaching the half-life period of isotopes, so that water pollution is caused.

Disclosure of Invention

In view of the technical problems in the prior art, the first object of the present invention is to: provides a medical radioactive waste water decay pool, which enables the isotope in the radioactive waste water to reach the half-life period, the waste water to reach the discharge standard and the pollution to be reduced.

The second object of the present invention is: the treatment method of the medical radioactive waste water decay tank enables radioactive waste water discharged from hospitals to decay effectively, and the radioactive waste water reaches the standard and is discharged, so that pollution is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

a medical radioactive wastewater decay pool comprises at least two sediment pools, at least two decay pools, a water collecting well and an electric control system; 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 is provided with a water collecting well water inlet and a water collecting well water outlet, the slag basin water inlet is connected with a waste water discharge end, 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 water inlet through a pipeline, and the water collecting well water outlet is connected with a hospital sewage treatment center; the electric control system comprises a signal alarm device, a gate valve control device and a water pump control device, floating ball liquid level controllers are arranged on the slag settling tank, the decay tank and the water collecting well, and the floating ball liquid level controllers are connected to the signal alarm device through a circuit; the sludge basin, the decay basin and the water collecting well are all provided with submersible sewage pumps which are connected to a water pump control device through circuits; and the pipeline connected with the water inlet of the sediment tank, the pipeline connected between the water outlet of the sediment tank and the water inlet of the decay tank, the pipeline connected between the water outlet of the decay tank and the water inlet of the water collecting well and the pipeline connected with the water outlet of the water collecting well are all provided with gate valves, and the gate valves are connected to a gate valve control device through circuits.

Furthermore, two slag settling tanks are provided, and the two slag settling tanks are respectively a first slag settling tank and a second slag settling tank; the number of the decay ponds is three, and the three decay ponds are respectively a first decay pond, a second decay pond and a third decay pond.

Furthermore, the first slag settling tank, the second slag settling tank, the first decay tank, the second decay tank and the third decay tank are sequentially arranged side by side.

Furthermore, a stainless steel slag separation net is arranged in the slag settling tank.

A treatment method of a medical radioactive wastewater decay pond comprises the following steps:

(1) radioactive wastewater discharged from a wastewater discharge end enters a first slag settling tank or a second slag settling tank, the radioactive wastewater is subjected to slag settling treatment in the slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used;

(2) the radioactive waste water is discharged from the first decay tank, the second decay tank or the third decay tank alternatively, the radioactive waste water is decayed in the decay tanks, the first decay tank, the second decay tank and the third decay tank are used alternatively, when one decay tank is filled with the radioactive waste water, the next decay tank is used for containing the radioactive waste water, the decay tank filled with the radioactive waste water is discharged into the water collecting well after reaching the decay period, a waste water sample is extracted from the water collecting well for detection, the waste water is discharged into a hospital sewage treatment center from the water collecting well after the detection is qualified, and if the detection is unqualified, the waste water is continuously remained in the water collecting well for decay until the waste water is discharged into the hospital sewage treatment center after the detection is qualified.

Further, the first slag settling tank and the second slag settling tank are used alternately once every six months.

And further, the radioactive waste water is discharged into the decay tank every six months of use of the first slag settling tank or the second slag settling tank.

Furthermore, the decay time of the first decay tank, the second decay tank and the third decay tank is two months.

In summary, the present invention has the following advantages:

1. according to the invention, the slag settling tank is additionally arranged, the radioactive wastewater is subjected to slag settling treatment before entering the decay tank, so that the decay time of the radioactive wastewater is prolonged, and the isotope in the radioactive wastewater reaches the half-life period through the decay treatment of the decay tank, so that the radioactive wastewater is ensured to be discharged after reaching the standard, and the pollution is reduced.

2. The invention is provided with an electrical control system which comprises a signal alarm device, a gate valve control device and a water pump control device, can effectively monitor and control the treatment process of radioactive wastewater, and is convenient and practical.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Wherein: 1 is first detritus pond, 2 is the second detritus pond, 3 is first decay pond, 4 is the second decay pond, 5 is the third decay pond, 6 is the sump pit, 7 is hospital sewage treatment center, 8 is the waste water discharge end, 9 is stealthily dirty pump, 10 is the gate valve, 11 are floater liquid level controller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and detailed description.

A medical radioactive wastewater decay pool comprises at least two sediment pools, at least two decay pools, a water collecting well and an electric control system; 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 is provided with a water collecting well water inlet and a water collecting well water outlet, the slag basin water inlet is connected with a waste water discharge end, 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 water inlet through a pipeline, and the water collecting well water outlet is connected with a hospital sewage treatment center; the electric control system comprises a signal alarm device, a gate valve control device and a water pump control device, floating ball liquid level controllers are arranged on the slag settling tank, the decay tank and the water collecting well, and the floating ball liquid level controllers are connected to the signal alarm device through a circuit; the sludge basin, the decay basin and the water collecting well are all provided with submersible sewage pumps which are connected to a water pump control device through circuits; and the pipeline connected with the water inlet of the sediment tank, the pipeline connected between the water outlet of the sediment tank and the water inlet of the decay tank, the pipeline connected between the water outlet of the decay tank and the water inlet of the water collecting well and the pipeline connected with the water outlet of the water collecting well are all provided with gate valves, and the gate valves are connected to a gate valve control device through circuits. A stainless steel slag separation net is arranged in the slag settling tank.

As shown in fig. 1, in the present embodiment, there are two slag settling tanks, and the two slag settling tanks are a first slag settling tank and a second slag settling tank, respectively; the number of the decay ponds is three, and the three decay ponds are respectively a first decay pond, a second decay pond and a third decay pond. The first slag settling tank, the second slag settling tank, the first decay tank, the second decay tank and the third decay tank are sequentially arranged side by side.

As shown in figure 1, the water outlet of the waste water discharging end is connected with the water inlet of the first slag trap and the water inlet of the second slag trap through pipelines respectively, the water outlet of the first slag trap is connected with the water inlets of the first decay pool, the second decay pool and the third decay pool through pipelines respectively, the water outlet of the second slag trap is connected with the first decay pool, the water inlets of the second decay pool and the third decay pool through pipelines respectively, the water outlet of the first decay pool is connected with the water inlet of the water collecting well through a pipeline, the water outlet of the second decay pool is connected with the water inlet of the water collecting well through a pipeline, the water outlet of the third decay pool is connected with the water inlet of the water collecting well through a pipeline, and the water outlet of the water collecting well is connected with the hospital sewage treatment center. The first slag settling tank, the second slag settling tank, the first decay tank, the second decay tank, the third decay tank and the water collecting well are all provided with floating ball liquid level controllers which are connected to the signal alarm device through circuits. And a submersible sewage pump is arranged in the first slag settling tank, the second slag settling tank, the first decay tank, the second decay tank, the third decay tank and the water collecting well and is connected to the water pump control device through a circuit. The pipeline of being connected between the delivery port of waste water discharge end and the water inlet of first detritus pond and the water inlet of second detritus pond, the delivery port and the first decay pond of first detritus pond, the pipeline of being connected between the water inlet of second decay pond and third decay pond, the delivery port and the first decay pond of second detritus pond, the pipeline of being connected between the water inlet of second decay pond and third decay pond, the pipeline of being connected between the delivery port of first decay pond and the water inlet of sump pit, the pipeline of being connected between the delivery port of second decay pond and the water inlet of sump pit, the pipeline of being connected between the delivery port of third decay pond and the water inlet of sump pit, the pipeline of being connected between the delivery port of sump pit and the hospital sewage treatment center, all be equipped with the gate valve on these pipelines, the gate valve is connected to the gate valve controlling means through the circuit.

A treatment method of a medical radioactive wastewater decay pond comprises the following steps:

(1) radioactive wastewater discharged from a wastewater discharge end enters a first slag settling tank or a second slag settling tank, the radioactive wastewater is subjected to slag settling treatment in the slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used;

(2) the radioactive waste water is discharged from the first decay tank, the second decay tank or the third decay tank alternatively, the radioactive waste water is decayed in the decay tanks, the first decay tank, the second decay tank and the third decay tank are used alternatively, when one decay tank is filled with the radioactive waste water, the next decay tank is used for containing the radioactive waste water, the decay tank filled with the radioactive waste water is discharged into the water collecting well after reaching the decay period, a waste water sample is extracted from the water collecting well for detection, the waste water is discharged into a hospital sewage treatment center from the water collecting well after the detection is qualified, and if the detection is unqualified, the waste water is continuously remained in the water collecting well for decay until the waste water is discharged into the hospital sewage treatment center after the detection is qualified.

In this embodiment, the first and second slag settling tanks alternate once every six months of use. And discharging radioactive wastewater into the decay tank every six months of use of the first slag settling tank or the second slag settling tank. The decay time of the first decay tank, the second decay tank and the third decay tank is two months.

When the device is used, the water inlet gate valve of the first sediment tank is opened, radioactive wastewater discharged from the wastewater discharge end enters the first sediment tank, the radioactive wastewater is subjected to sediment treatment in the first sediment tank, after the first sediment tank is used for six months, the water inlet gate valve of the first sediment tank is closed, the water inlet gate valve of the second sediment tank is opened, the radioactive wastewater discharged from the wastewater discharge end enters the second sediment tank, and the radioactive wastewater is subjected to sediment treatment in the second sediment tank; after the first slag settling tank is used for six months, opening a water outlet gate valve of the first slag settling tank, opening a water inlet gate valve of the first decay tank, discharging radioactive wastewater in the first slag settling tank into the first decay tank through a submersible sewage pump in the first slag settling tank, carrying out decay treatment on the radioactive wastewater in the first decay tank, closing the water inlet gate valve of the first decay tank and opening a water inlet gate valve of the second decay tank when the first decay tank is filled with the radioactive wastewater, allowing the radioactive wastewater in the first slag settling tank to enter the second decay tank, closing the water inlet gate valve of the second decay tank and opening a water inlet gate valve of the third decay tank when the second decay tank is filled with the radioactive wastewater, and allowing the radioactive wastewater in the first slag settling tank to enter the third decay tank; when the first decay tank is filled with radioactive wastewater, beginning to record decay time of the first decay tank, opening a water outlet gate valve of the first decay tank after two months, opening a water inlet gate valve of the water collecting well, discharging the wastewater in the first decay tank into the water collecting well through a submersible sewage pump in the first decay tank, extracting a wastewater sample from the water collecting well for detection, opening the water outlet gate valve of the water collecting well after the detection is qualified, discharging the wastewater in the water collecting well into a hospital wastewater treatment center through the submersible sewage pump in the water collecting well, performing ordinary wastewater treatment, if the wastewater sample extracted from the water collecting well is unqualified, continuously remaining the wastewater in the water collecting well for decay, and discharging the wastewater into the hospital wastewater treatment center after the detection is qualified, wherein the direction shown by an arrow in figure 1 is the flow direction of the wastewater. The qualified standard of detection is that the total alpha value in the wastewater is less than or equal to 1.0Bq/L, and the total beta value is less than or equal to 10 Bq/L.

After the radioactive wastewater in the first slag settling tank is discharged, the slag in the first slag settling tank is placed for six months, so that the slag decays, the slag is cleaned after six months, the slag is treated as radioactive waste, and the first slag settling tank is continuously used after the cleaning is finished. The second slag settling tank circulates the flow of the first slag settling tank, and the first slag settling tank and the second slag settling tank are alternately used. After the waste water in the first decay pond is discharged, the first decay pond needs to be cleaned, the first decay pond continues to be used after the cleaning is finished, the second decay pond and the third decay pond circulate the flow of the first decay pond, and the first decay pond, the second decay pond and the third decay pond are alternately used. When the water level in the first sediment tank, the second sediment tank, the first decay tank, the second decay tank, the third decay tank or the water collecting well reaches a set water level line, the floating ball liquid level controller can transmit signals to the signal alarm device to send alarm signals to a user, and the user can conveniently monitor and control the water level.

According to the invention, the slag settling tank is additionally arranged, the radioactive wastewater is subjected to slag settling treatment before entering the decay tank, so that the decay time of the radioactive wastewater is prolonged, and the isotope in the radioactive wastewater reaches the half-life period through the decay treatment of the decay tank, so that the radioactive wastewater is ensured to be discharged after reaching the standard, and the pollution is reduced. The invention is provided with an electrical control system which comprises a signal alarm device, a gate valve control device and a water pump control device, can effectively monitor and control the treatment process of radioactive wastewater, and is convenient and practical.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.