Simplest to more challenging, ...

Simplest to more challenging, combinations always a consideration for pH, charge and settling or flotation; acid- HCl, H2SO4, FeCl, AlSO4,FeSO4, Lime- CaO, Caustic - NaOH, CaOH, KOH, inorganic salts mentioned with Polyamines: DADDMAC & Epiamines, blended with inorganic 5-20℅ blends should be sufficient, all are Cationic except sodium alumina the which is snionic, other inorganic a are aluminum chloride, polyaluminum chloride and polyaluminum sulfate, once a pepper sized floc is formed and pH.is less than 7.0 add a Cationic Flocculant to make a large Flickr, when pH is over 8.0 use an Anionic flocculant to form a large Floc. Higher pH's tend to float where lower pH's tend to settle. Selecting the equipment to match the chemistry correctly reduces operational and capital costs.