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>> Overview The water pollutants
• IONS, anions and cations, calcium compounds, etc. ..electrically charged, responsible for incrustations and the aggressivity of water (according to its pH), for the change in quantitative determinations, the conductivity of the water and for the "doping" of analyses...• ORGANIC BODIES (oils, algae, detergents) creators of opacity, smells, tastes, which can clog ducts or favour a microbic development (food for the bacteria) and quickly clog sterilising microfilters. • BACTERIA AND MICRO-ORGANISMS whose living medium is constantly developed and renewed by contact with organic matter, heat, light, atmospheric pollutants, the walls or simply by stagnation. These micro-organisms, with dimensions of 0.4 to 8 microns, are a particular nuisance for the elaboration of the semiconductors, micro-analyses, ultrahigh vacuum gas extraction from the walls... • Molecular COLLOIDS or MICELLES, made up of a molecule or a protide that, emulsified in the water, repel each other (electric charge of the same sign) creating dynamic balances whose amplitude of movement depends on their surface tension. The colloids are glucides, metals, oxides, salts, metalloids, having a dimension that may only be 0.05 micron (which makes it impossible to trap them by classical filtration means at reasonable flow rates and pressures). |
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