... and decoloring, fluoride, aluminum, chromium, phenol, except the oil, turbidity removal, in addition to heavy metal salt, except ... sewage. 2).Purification industrial water, industrial waste, mining, oil field back to water injection, purify the paper, metallurgy, ... bleaching, dyeing and cement herein, precision casting stiffening agent, fire-proof material adhesives, glycerin refined, sugar liquid ...