A device, system and method for automatically controlling the attenuation and discharge of medical radioactive wastewater

Abstract

The invention discloses an automatic control medical radioactive wastewater attenuation discharge device, system and method. The device comprises a water collecting tank and at least one attenuation tank communicated with a wastewater outlet of the water collecting tank, wherein the attenuation tank comprises a septic tank and at least two U-shaped units which are sequentially connected in series; a water inlet of the septic tank is communicated with a water inlet pipeline; an overflow port in the top part of the septic tank is communicated with a water inlet of each U-shaped unit; each U-shaped unit comprises a left tank, a right tank, and a separating wall for separating the left tank and the right tank; a circulating hole for communicating the left tank and the right tank is formed in the bottom part of the separating wall; the left tank is provided with the water inlet of the corresponding U-shaped unit in the upper side wall of a non-separating wall; the right tank is provided with a top-part overflow port of the corresponding U-shaped unit in the upper side wall of a non-separating wall; a switching valve control loop of each U-shaped unit is controlled centralizedly. According to the automatic control medical radioactive wastewater attenuation discharge device, the system and the method provided by the invention, a modularized independent unit format is adopted, each independent unit collects a half-life period of nuclide according to a principle of a fluid mechanics U-shaped pipe, and a septic tank unit and two to three U-shaped units are made, so that the aims of independent storage, discharge and cleanness are achieved.

Description

technical field [0001] The invention relates to the field of nuclear medicine wastewater treatment, in particular to an automatic control device, system and method for attenuation and discharge of medical radioactive wastewater. Background technique [0002] Nuclear medicine is also called atomic medicine. It refers to the application of radioisotopes, ray beams produced by accelerators and nuclear radiation produced by radioisotopes in medicine. In medicine, radioisotopes and nuclear radiation can be used for diagnosis, treatment and medical scientific research; in pharmacy, they can be used for research on the principle of drug action, determination of drug activity, drug analysis and radiation disinfection of drugs, etc. The nuclear medicine department of the hospital uses nuclides to carry out PET and SPECT diagnosis and treatment of hyperthyroidism and thyroid cancer. A certain amount of contaminated waste liquid is produced during the diagnosis and treatment process. ...

AI Technical Summary

Problems solved by technology

[0003] 1. The principle of fluid mechanics is not considered. When the three attenuation pools are full of water, the waste liquid that finally enters the No. 1 pool will not automatically sink to the bottom of the pool, and the water in the upper layer will ideally be squeezed into the No. 2 pool; the real situation The waste liquid that enters continuously at the end will advect to the No. 2 pool through the upper connecting pipe of the pool, and then enter the No. 3 pool in the same way. Instead, it is last in, first out, and the effect of prolonging the residence time is not achieved;

[0004] 2. The upper connecting pipe adopts a downward elbow, and the nozzle is close to the bottom of the pool. This method does not consider that the drain pipe is a non-pressure pipe. The water pressure on the waste liquid discharge port at the bottom is equal in all directions, and the waste liquid cannot be discharged. Can overflow from the upper gap;

[0005] 3. The traditional attenuation pool is a continuous method, and its capacity is the design capacity at that time. Once the number of patients increases, the waste liquid treatment unit cannot be added in a modular manner, and must be rebuilt; the detection of the discharge port must also be monitored from time to time, and regular monitoring cannot be achieved. ,reduce workload

Images