Chapter 29: Waste Water Treatment

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Sedimentation

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14 Terms

1

Sedimentation

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

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2

Microbes

________ can cause illnesses.

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3

fresh water

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

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4

sewage sludge

The ________ is digested anaerobically by specific bacteria.

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5

Waste water

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

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6

aerobic bacteria

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

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7

Agricultural waste water

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

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8

Industrial waste water

________ may contain harmful chemicals such as toxic metal compounds.

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9

waste water sources

agricultural systems, organic matter and sewage

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10

the why potable water is produced

_____depends on where you are

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11

desalination

the process of removing salt from seawater.

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12

wet countries

fresh water sources

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13

dry countries

sea water treated by desalination

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14

waste water

water that needs to be disposed of

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