... Mainly used on various industrial wastewater treatment,such as paper-making wastewater, municipal wastewater,oily wastewater,beneficiation ... harmless: Doesn't contain any harmful substances such as aluminum, chlorine, heavy metal ions, and water phase ... used in discolouring, dehydrating, deodorizing, degreasing, sterilizing as well as discarding heavy metal iron, radioactive substance and carcinogens ...