Around the world, household drinking water purification systems, including a reverse osmosis step, are commonly used for improving water for drinking and cooking.
Such systems typically include a number of steps:
- a sediment filter to trap particles including rust and calcium carbonate
- optionally a second sediment filter with smaller pores
- an activated carbon filter to trap organic chemicals, and chlorine which will attack and degrade TFC reverse osmosis membranes
- a reverse osmosis (RO) filter which is a thin film composite membrane (TFM or TFC)
- optionally a second carbon filter to capture those chemicals not removed by the RO membrane.
- optionally an ultra-violet lamp is used for disinfection of any microbes that may escape filtering by the reverse osmosis membrane.
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