... sulfate FeSO4 (7H2O - 90%, titanium dioxide content of p content of TiO2 than 0.75%, water content than 0.75 ... the flocculant, ferrous sulfate could replace polyaluminium, alkali, polyblend of iron and aluminium type, aluminium, hexahydrated, etc. 2, as ... phosphate deposits, thus removing sulfide, phosphate, sulfate, with examples of sulfur wastewater treatment textiles. 3, a reductant, ferrous sulfate ...