C10 Flashcards

1
Q

What is portable water ?

A

Water safe to drink

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2
Q

Best way to collect water ?

A

In the ground , lakes and rivers

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3
Q

Process of collecting water ?

A

Collect water

storage

screening

remove particles

final treatment

water received

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4
Q

How can water be purified ?

A

Reverse osmosis or evaporation

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5
Q

What is reverse osmosis ?

A

Passes impure water through a semi - permeable membrane at a high pressure to remove infirmities

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6
Q

Sewage ?

A

require removal of organic matter and harmful microbes

Industrial waste can produce harmful chemicals

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7
Q

How people remove waste ?

A

Screening and grit removal

Sedimentation to produce sewage sludge and effluent

Anaerobic digestion of sewage sludge

Aerobic biological treatment of effluent

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8
Q

What is bioteaching ?

A

Uses bacteria to produce leachate solutions that contain metal compounds

Processed to obtain the metal

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9
Q

How do you recycle Metals ?

A

Melting and recasting

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10
Q

How to recycle glass ?

A

Crush , melt , reform

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11
Q

How to recycle steel ?

A

added to blast furnace

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12
Q

How to recycle plastic ?

A

Recycled not very easily

often recycled into lower grade plastics

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13
Q

What is the life cycle assessment ?

A

The environmental impact of products in each of the stages

Extracting and processing

Manufacturing and packaging

use and operation

Disposal

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