The important function of the ventilation system of a nuclear power plant is to remove radioactive substances from the exhaust gas by filtering, adsorbing and other means before it is discharged, thereby protecting the public environment from pollution and providing a suitable temperature and humidity environment for workers and equipment.

As the last barrier before gas emissions from nuclear power plants, the purification effect of the ventilation system will directly affect the safe operation of the power plant and the air quality of the surrounding environment.

The ventilation system of a nuclear power plant mainly consists of two parts: the air intake system and the exhaust system. An air filter is installed in the air intake system to reduce dust entering the plant and avoid aerosol formation;

The system is equipped with a primary filter, a high-efficiency filter and an iodine adsorber to filter and adsorb harmful substances such as aerosols and radioactive iodine in the air.

With the development of nuclear industry, the purification of radioactive waste has become a very important and prominent issue. The radioactive oxygen waste and radioactive iodine waste gas of nuclear power plants have become the key research topics.