China's disposal of low- and medium-radioactive nuclear waste is handled in accordance with national standards and International Atomic Energy Agency (IAEA) requirements. Whether it is solid or liquid nuclear waste, it is solidified and then packed in 200-liter stainless steel drums and placed in repositories in shallow ground.

Currently, China has built two medium- and low-radiation nuclear waste repositories and is preparing to build two more, but does not yet have a high-radiation repository. The two repositories for low- and medium-radiation nuclear waste have been built in Yumen, Gansu province, and Beilong, near Daya Bay, Guangdong province.

The Gansu Yumen Northwest Disposal Site is located in the former Nuclear Industry 404 Plant, one of China's earliest nuclear industry bases. Guangdong Beilong disposal site was built in 1998, completed in 2000, is located in the Dapeng Peninsula, Paiya Mountain, east of a gently sloping hill beam, 5 kilometers from the Daya Bay nuclear power plant, saw Lingao nuclear power plant 4 kilometers. Covering an area of nearly 21 hectares, it is designed to have a total disposal capacity of 80,000 cubic meters, with a project cost of about RMB 80 million. It mainly receives and disposes of low to medium level radioactive solid wastes generated from nuclear power plants in Guangdong Province.

For the widely adopted pressurized water reactor nuclear power plants, the treatment processes for various types of wastewater are as follows:

(a) Process wastewater. Mainly for the coolant-related systems (equipment, piping and valves) of the hydrophobic and lead leakage water. Depending on its radioactivity level and salt content, it can be treated by pre-filtration, ion exchange and evaporation.

(ii) equipment decontamination wastewater. Mainly for radioactive equipment decontamination of decontamination wastewater, its salt content is high, generally use evaporation treatment.

(iii) Ground washing wastewater, shower water and laundry water. This type of wastewater has a very low level of radioactivity and can be discharged after filtration, or treated by evaporation or membrane filtration (reverse osmosis, nanofiltration or ultrafiltration, etc.). If the wastewater contains detergents, an antifoaming agent needs to be added during evaporation or the detergents need to be pre-decomposed. Radioactive waste generated by the nuclear power plant belongs to the medium and low discharge, after purification, concentration, the use of plastic, epoxy resin, etc. cured in metal drums; for low discharge of waste after the above purification treatment, the test meets the prescribed value of dilution discharge.