Function
In the water quality pretreatment system, after before the activated charcoal filter can adsorb, in the level filtration to be unable Yu Lvyi who removes to prevent, the level counter-seepage membrane its oxidative degradation, meanwhile adsorbs small molecular organic matter which and so on pollutional formerly the level divulged the materials, in adding water the unusual smell, the colloid and the pigment, the heavy metal ion and so on has the obvious adsorption elimination function, but also had reduces COD the function