Mixing phenomenon of Fe(OH)3 colloid and Al(OH)3 colloid: ionization
Colloidal mixing phenomenon of ferric hydroxide colloid H2SiO3: polymerization
Iron salt mainly purifies water through the hydrolysis of iron ions, while the nature of Fe(OH)3 colloid is that the colloid is not charged, but the colloidal particles are charged, and the water is purified by adsorbing the charged particles.
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