Water Treatment (Leaving Cert Chemistry): Flashcards
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Practise the cards
15 cards from this deck
Flocculating agent in water treatment
Flocculating agent in water treatment
Aluminium sulfate
What are flocs?
What are flocs?
Larger clumps formed when particles coagulate
Materials used in filtration stage
Materials used in filtration stage
Sand and gravel
Purpose of chlorination in water treatment
Purpose of chlorination in water treatment
Kill microorganisms (bacteria and viruses)
Purpose of fluoridation
Purpose of fluoridation
Prevent tooth decay and strengthen enamel
Chemical to raise pH in water treatment
Chemical to raise pH in water treatment
Calcium hydroxide
Chemical to lower pH in water treatment
Chemical to lower pH in water treatment
Sulfuric acid
Name of secondary sewage treatment process
Name of secondary sewage treatment process
Activated sludge process
Role of bacteria in secondary sewage treatment
Role of bacteria in secondary sewage treatment
Decompose organic matter
What tertiary treatment removes
What tertiary treatment removes
Nitrates and phosphates
Most expensive sewage treatment stage
Most expensive sewage treatment stage
Tertiary treatment
Definition of eutrophication
Definition of eutrophication
Excess nutrients causing algae overgrowth and oxygen depletion
Examples of heavy metal ion pollutants
Examples of heavy metal ion pollutants
Lead (), mercury (), cadmium ()
Method to remove heavy metals from water
Method to remove heavy metals from water
Precipitation
Health problem caused by excess nitrates
Health problem caused by excess nitrates
Blue baby syndrome