... the traditional inorganic applicability. Compared with polyferric sulphate, polymerization of alumina iron decoloring skills. Turbidity ... be treated water can recycle. Purification treatment lead, chromium, cadmium and sulphur of wastewater, sewage, water ... two kinds, namely polymerization, aluminium, aluminium polyferric sulphate, polymerization ferric chloride. And these traditional water treatment ...