Water treatment processes

water remains static to let suspended solids e.g silt to settle

metal grills / meshes removes suspended solids e.g vegetation, plastics

bubbles of air / water sprays aerate the water to increase dissolved oxygen content removes odour and some insoluble metals

removes clay particles by neutralising electrostatic charge

filters used to removed remaining suspended solids and bacteria through sand and gravel layers

remove organic chemicals e.g pesticides that absorb onto carbon granules/ particles

addition of chlorine, ozone or UV light sterilises water and kills pathogens

adding crushed lime or chlorine

improves dental health

toxic metal ions adsorb onto polymer beads also produces softer water

filtered at high pressure through partially permeable membrane - spenny

water boiled, stream produced is condensed and collected