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PHYSICO-CHEMICAL THEORY OF CLEANING WATER ALUMINUM SULFATE KOAHULYUVANNYAM (POST 1)

A. Zapolzkiy

Zhitomir National Agroecomomic University, Zhitomir

e-mail: tnrtazht@xtf.kpi.ua

The authors suggest a new physical-chemical theory of water treatment coagulants (eg aluminum sulfate). For the first time expressed the opinion that the hydrated aluminum ion in the solid crystalline sulphate (Al2(SO4)3*24H2O) is in the form of dimer [Al2(H2O)24]6+. Last ochyschayemiy water in the presence of sufficient alkaline reserve undergo hydrolytic polymerization of the scheme:

[Al2(H2O)24]6+ → [Al2(H2O)24(OH)2]4+ → [Al4(H2O)36(OH)6]6+

→ [Al6(H2O)36(OH)12]6+ → { [Al2(OH)6]3 [Al6(H2O)36(OH)12]2}6+micelles
aggregation of micelles in Globular aggregates and chain structure → flakes.

Key words: coagulation, aluminium sulfate, aqua systems, aluminium hydroxide.

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06.07.2012 at 12:57 pm