M'machitidwe ochiritsira ochiritsira madzi, ma flocculants omwe amagwiritsidwa ntchito kwambiri ndi mchere wa aluminiyamu ndi mchere wachitsulo, mchere wa aluminiyumu wotsalira m'madzi osakaniza udzaika pangozi thanzi laumunthu, ndipo mchere wotsalira udzakhudza mtundu wa madzi, etc.; m'malo ambiri Pakutsuka madzi oyipa, ndi diffi...
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