Continuous electric desalination (EDI - company deionization) technology is a cost in water treatment industry revolution, its biggest characteristic is to use electricity instead of acid and alkaliof resin regeneration, so it is economical and practical, can use thelimited energy consumption of the stability of pure water. Has astable water quality, using the low cost, convenient operation andmanagement, cover an area of an area small, etc, since 1986, EDItechnology industrialization, has been widely used in medicine,electronics, electric power and industrial area, such as surfacecleaning, has obtained the good economic benefits, get the favour the masses of users, make the development of water treatment technology has entered a new stage.