4. Water Treatment to spec - Statistics

General Stats

Answer Stats

Hint	Answer	% Correct
Water treatment	10. Ion exchange	100%
Water treatment	1. Sedimentation	100%
Water treatment	2. Screens	100%
Water treatment	3. Aeration	100%
Water treatment	4. Coagulation and flocculation	100%
Water treatment	5. Clarification	100%
Water treatment	6.5 Desalination	100%
Water treatment	6. Filtration	100%
Water treatment	7. Carbon treatment	100%
Water treatment	8. Sterilisation	100%
Water treatment	9. pH adjustment	100%
Coagulant example	Aluminium sulfate	100%
Purpose of aeration	Ammonia stripping	100%
Flocculation	Binds	100%
pH adjustment	Crushed lime filter	100%
Purpose of aeration	Decarbonisation	100%
Requirement for C+F	Electrostatic charges make particles repel	100%
Reverse osmosis	Filtration through partially permeable membrane	100%
Filtration flows through (2)	Gravel, sand	100%
Screen types (2)	Grills, mesh	100%
Contaminants	Litter	100%
Contaminants	Metals	100%
Coagulation	Neutralises	100%
Contaminants	Odours	100%
Carbon treatment	Organic chemicals adsorb onto activated carbon filter	100%
Contaminants	Organic pollutants	100%
Purpose of aeration	Oxidise dissolved metals	100%
Contaminants	Pathogens	100%
Contaminants	Salts	100%
Contaminants	Suspended solids	100%
Ion exchange	Toxic ions adsorb onto polymer beads	0%

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