Chapter 29: Waste Water Treatment

Sedimentation

________ allows tiny particles to settle out from still water, which produces sewage sludge and effluent (the liquid which remains on top)

Microbes

________ can cause illnesses.

fresh water

In the UK, rain provides enough_______to meet the needs of the population.

sewage sludge

The ________ is digested anaerobically by specific bacteria.

Waste water

________ from homes, industry and agriculture must be treated before being released into the environment.

aerobic bacteria

The effluent is treated with ________ to reduce the volume of solid waste.

Agricultural waste water

________ may contain fertilisers or pesticides which can disrupt sensitive ecosystems.

Industrial waste water

________ may contain harmful chemicals such as toxic metal compounds.

waste water sources

agricultural systems, organic matter and sewage

the why potable water is produced

_____depends on where you are

desalination

the process of removing salt from seawater.

wet countries

fresh water sources

dry countries

sea water treated by desalination

waste water

water that needs to be disposed of