Kwiinkqubo eziqhelekileyo zokunyanga amanzi, i-flocculants esetyenziswa kakhulu i-aluminium ityuwa kunye neetyuwa zensimbi, iityuwa ze-aluminium ezisele emanzini ahlambulukileyo ziya kubeka engozini impilo yabantu, kunye neetyuwa zetsimbi eziseleyo ziya kuchaphazela umbala wamanzi, njl.; kuninzi Ekucocweni kwamanzi amdaka, kuba diffi...
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