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Flashcards in Pollution Deck (11)
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1

What is meant by relative pollution?

The amount of pollution in a body of water, relative to the amount of water.

2

What are the three main pollution groups?

Physical

Chemical

Biological

(tip: think of the 3 main sciences; physics, chemistry, biology)

3

Where is most (up to 75%) of the pollution in a swimming pool?

In the top 150mm of water.

4

Which of the pollution groups does urine belong in?

Chemical

5

Which of the pollution groups does bacteria belong in?

Biological

6

Which of the pollution groups does algae belong in?

Biological

7

Which of the pollution groups does grit belong in?

Physical

8

How do you control physical pollution

By mechanical/physical means (netting, scooping, skimming, filtering etc.)

9

How do you control chemical pollution?

Dilution (introducing fresh water into the pool).

10

What is the recommended rate of dilution?

30 litres of fresh water per bather, per day.

11

How do you control biological pollution?

Disinfection