polyaluminium chloride for pool water treatment in france

polyaluminium chloride for pool water treatment in france
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  • Does polyaluminium chloride coagulation reduce water pollution?
  • The aim of this study was to evaluate the effectiveness of the coagulation process using highly polymerised polyaluminium chlorides in reducing the level of pollution of water in a mixture of groundwater and surface water.
  • What is the coagulation removal rate of polyaluminium chloride (PAC)?
  • Without coagulation removal rates in a single pass of a medium-rate filter were about 50%. This was dramatically improved, to over 90%, by dosing polyaluminium chloride. PAC is directly and continuously dosed from the containers in which it is delivered at a rate of about 0.1ml/m 3 of the circulation flow.
  • How is polyaluminium chloride dosed?
  • This was dramatically improved, to over 90%, by dosing polyaluminium chloride. PAC is directly and continuously dosed from the containers in which it is delivered at a rate of about 0.1ml/m 3 of the circulation flow. (It is very important that it is not diluted with water as it will form a gel.)
  • Does polyaluminium chloride coagulate with non-prehydrolysed aluminium salts?
  • Although the mechanism of coagulation with non-prehydrolysed and prehydrolysed aluminium salts is the same, the presence of polymeric forms of aluminium in polyaluminium chloride solutions makes them more stable in water, providing more effective removal of impurities and lower concentrations of aluminium remaining in the treated water.