Instead Alum Use Poly Aluminium Chloride Coagulant in ...
a) .the cost of Poly Aluminium Chloride is twice/thrice of Alum ( roughly the cost of PAC/ Kg) b).One possible disadvantage in using Poly Aluminum Chloride (PAC) relates to the removal of dissolved organic carbon (DOC) from water. It is well documented that effective DOC removal is possible with alum,particularly when coagulating at lower ...