Unit 3 - Key Area 2 (Water) Flashcards Preview

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Flashcards in Unit 3 - Key Area 2 (Water) Deck (19)
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1

The breakdown of organic waste by microorganisms in the absence of oxygen.

Anaerobic digestion

2

Is gas produced from the breakdown of organic waste by microorganisms in anaerobic conditions.

Biogas

3

Use of microorganisms to breakdown organic waste.

Biological oxidation

4

Waste water that includes water from toilets that needs to be treated extensively before it can be reused.

Blackwater

5

Method to improve water quality involving the addition of a chemical which makes smaller particles sticking together ma king them easier to remove.

Coagulation

6

A sustainable way to manage water resources involving removal of salt from water.

Desalination

7

Method to improve water quality involving killing pathogens. (different in developed and developing countries)

Disinfection

8

A method of water conservation used in agriculture

Drip irrigation

9

Liquid waste or sewage that can be released into waterways.

Effluent

10

Method to improve water quality involving the removal of bacteria, parasites and remaining suspended particles. (different in developed and developing countries)

Filtration

11

Formed when tiny particles stick together.

Floc

12

Method to improve water quality involving making smaller particles stick together as a “floc” to allow them to be removed.

Floculation

13

Waste water produced in homes that can be reused.

Greywater

14

Something that can cause disease.

Pathogen

15

A multi stage process used to improve water quality.

Purification

16

Method to improve water quality involving removing larger pieces of debris from surface water.

Screening

17

Method to improve water quality involving the settling particles as sludge.

Sedimentation

18

The liquid formed when the solids have been removed from sewage after sedimentation.

Sewage liquor

19

The solids removed from the sewage during sedimentation.

Sewage sludge