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15 cards from this deck
Aluminium sulfate
Larger clumps formed when particles coagulate
Sand and gravel
Kill microorganisms (bacteria and viruses)
Prevent tooth decay and strengthen enamel
Calcium hydroxide
Sulfuric acid
Activated sludge process
Decompose organic matter
Nitrates and phosphates
Tertiary treatment
Excess nutrients causing algae overgrowth and oxygen depletion
Lead (Pb2+Pb^{2+}Pb2+), mercury (Hg2+Hg^{2+}Hg2+), cadmium (Cd2+Cd^{2+}Cd2+)
Precipitation
Blue baby syndrome
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