... original technology, low price, as the flocculant, ferrous sulfate could replace polyaluminium, alkali, polyblend of iron and aluminium ... of sulfide, phosphate deposits, thus removing sulfide, phosphate, sulfate, with examples of sulfur wastewater treatment textiles. 3, a ... optimal amount) dosage. 3 dosing: will melt into ferrous sulfate solution, and according to the proportion of dosage, can cast ...