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Waste water (sewage) treatment

Total questions: 8

Worksheet time: 8mins

Name
Class
Date
1.

What is the sewage network?

a)

The place where water is cleaned before being returned to rivers.

b)

The pipes that carry sewage (dirty water) from our houses to the sewage treatment plant.

c)

The place where all our sewage is cleaned.

d)

The place where water is cleaned before being returned to our taps.

2.

What is a sewage treatment plant?

a)

The place where water is cleaned, filtered and tested before re-entering the water cycle.

b)

The place where water is cleaned, filtered and tested before going to our houses.

c)

The network of pipes that carry sewage (dirty water) from our houses.

d)

The place where water is bottled for drinking.

3.

What type of living things eat the organic matter in the sewage?

a)

Plants

b)

Animals

c)

Bacteria

d)

Fungi

4.

What happens to the sewage at the inlet works?

a)

The organic matter is eaten by bacteria.

b)

The sludge and solids are separated from the liquid.

c)

It is screened to remove unwanted objects like baby wipes etc.

d)

It is filtered and disinfected.

5.

Where is the sludge and solids separated from the liquid?

a)

Inlet works

b)

Clarifyers

c)

Sewage treatment plant

d)

Bio reactor

6.

What happens MANY times before the water can be returned to the water cycle?

a)

It is cleaned.

b)

It is disinfected.

c)

It is filtered.

d)

It is checked.

7.

When the water is clean where is it returned to?

a)

Our taps.

b)

The sea.

c)

The river.

d)

The reservoir.

8.

Which is the correct order for these three processes of sewage treatment? (disinfection, inlet works and bio reactor)

a)
  1. inlet works, 2. disinfection 3. bio reactor
b)
  1. bio reactor, 2. disinfection 3. inlet works
c)
  1. inlet works, 2. bio reactor 3. disinfection
d)
  1. disinfection, 2. bio reactor 3. inlet works