PAC is a flocculant and sometime a coagulant in vary applicates, the specific properties of which derive from the action of its basic active constituent, namely Poly Aluminium Chloride.
This is a polynuclear complex of polymerised hydro-aluminium ions, with the following general formula: { Al2 (OH)n Cl 6-n }x
PAC is supplied in form of water solution or as powder, which facilitates the transport and storage operations, and subsequent dosage of the reagent.
Technicians developed know-how and technologies for production plants of the following grades of PAC:
PAC 18%: mid-basicity liquid PAC, containing 17,5 ± 0,5% Al2O3, specific for waste waters and neutral sizing in paper making. It is used as primary coagulant aid for any clarifying/flocculation process relating to the treatment of surface or underground water and urban or industrial effluents.
PAC 18 is based on highly charged aluminium which results in lower dosage and therefore reduces sludge volume and pH adjustment demand. It also improves solids and/or phosphorous removal over conventional coagulants.
PAC 9% HB: high-basicity liquid PAC, containing 9 ± 0,5% Al2O3, specific for potable waters.
PAC 9 is based on highly charged aluminium which results in lower dosage and therefore reduces sludge volume and pH adjustment demand. It also improves solids and/or phosphorous removal over conventional coagulants.
PAC 30%: mid-basicity powder form, containing 30 ± 0,5% Al2O3.
Keywords: PAC, Poly aluminum Chloride, poly aluminium chloride, Polyaluminum Chloride, PACL, Coagulant
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