In a physico-chemical water treatment, the objective is often to precipitate the contaminating components to form a sludge which can be easily separated.
Detoxication can cover multiple different subjects. Removing pesticides and other toxic organic compounds can be done in an SBR or MBR by means of biological digestion.
Flotation is an alternative to a settling tank. During flotation the sludge will float on top of the water surface, while in a settler the sludge will settle.
