Waste water management quiz

Match the following types of pollutions with their examples

• Acid mine drainage

• Pollution by inorganic chemicals

• E.Coli

• Pollution by radioactive substances

• Erosion from construction sites

• Pollution by nurtients

• Fertiliser run-off

• Pollution by pathogens

• Nuclear plant discharge

• Pollution by sediments

Tags

NGSS.MS-ESS3-4

Reorder the following sewage treatment processes

• Primary Treatment

• Secondary Treatment

• Tertiary Treatment

The diagram shows a waste water treatment process. Select the correct process for each stage (i.e. what is removed):
​ ​ ​ (a)   : removes large debris such as plastics, rags and other solid materials.

​ (b)   : Removes small particles like sand, gravel and other inorganic materials.

​ (c)   : Introduces air into the sewage to encourage aerobic bacteria to break down organic matter.

​ (d)   : Settles out suspended solids, separating them from the liquid to form sludge.

​ (e)   : Reduces the water content of sludge, making it easier to handle and dispose of.

• Screening

• Grit removal

• Aeration

• Clarifier

• Solids De-watering

Answer explanation

The correct process for removing large debris such as plastics, rags, and other solid materials is Screening.

Tags

NGSS.MS-PS1-2

At what stage is harmful bacteria and pathogens inactivated.

Compare what happens to stormwater in a natural and in an urban environment

Evaluate responses using AI:

OFF

Answer explanation

In a natural environment, stormwater is absorbed by soil and vegetation, reducing runoff. In an urban environment, stormwater flows over impervious surfaces, leading to increased runoff and pollution.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

List 3 different design features that can improve stormwater issues in urban areas

Evaluate responses using AI:

OFF

Answer explanation

1. Green roofs can absorb rainwater. 2. Permeable pavements allow water to seep through. 3. Rain gardens help filter and store stormwater.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-4

Label the correct zones of the artificial wetland

a

b

c

d

e

f

g

h

Nurtients removed

Macrophyte Zone

Sediment removed

Inlet Zone

Cleansed water released

Outlet Zone

Open Water Zone

Large Debris removed

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3