poly aluminium ferrous chloride (pafc) (general type) in netherlands

poly aluminium ferrous chloride (pafc) (general type) in netherlands
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  • Is polyaluminum ferric chloride an inorganic coagulant?
  • 1. Introduction Polyaluminum ferric chloride (PAFC) is an efficient inorganic polymeric coagulant [1], [2]. Many studies [3], [4], [5] have demonstrated that inorganic polymeric coagulants were more effective than conventional inorganic coagulating salts in coagulation due to their resistances to the influence of wastewater initial pH.
  • Are PAFC flocs kept by chemical bonding?
  • In this study, the Rf values of all the PAFC flocs were less than 40%, indicating weak floc regrowth capacity, which was considered to be the evidence that the flocs were kept by chemical bonding rather than physical force and bridging and sweep mechanisms were involved besides charge neutralization.
  • Do surface characteristics of PAFC and flocs affect coagulation mechanisms?
  • However, there was lack of systematic research on the surface characteristics of PAFC and the flocs generated in water treating process and their effect on the coagulation mechanisms.