High saline concentration in water may extricate uranium from ion exchange resin. The one exception is the so called tap filter, the removal efficiency of which depends on uranium concentration in raw water and the rate of water flow. Typically, the removal efficiencies are nearly 100%. It is recommended that uranium be removed from drinking water by anion exchange, which is the most efficient removal method for this purpose. Since activated carbon filters emit gamma radiation while in use, they should not be installed inside the dwelling but in a separate building or by the well. Depending on the water quality and usage, the carbon batch inside the filter needs to be changed every 2 - 3 years. The removal efficiencies have been over 90%, often nearly 100%. Also, activated carbon filtration removes radon efficiently. However, setting up an aeration system requires thorough planning. The best aerators have achieved removal efficiencies that are nearly 100%.
Aerators that are well designed and set up can remove over 90% of waterborne radon. Radon can be removed from household water by aeration and by activated carbon filtration. One of the main objectives of the research was to compose a guidebook for consumers and water treatment companies. Three research projects, of which two were carried out with National Technology Agency of Finland and one with CEC, have been completed by the end of 2002. Research upon methods for removing radionuclides from household water was initiated in Finland in 1995. Removal of radionuclides from household water Metoder foer avlaegsnande av radionuklider fraan hushaallsvattenĮnergy Technology Data Exchange (ETDEWEB)
0 kommentar(er)
