Quiz

2. Which is better? ‘Reduce’ or ‘Recycle’?

‘Recycle’ is better than ‘Reduce’ since we are treating wastewater and recovering it.
‘Reduce’ is better since we can try to prevent or reduce water contamination.

3. How does one reuse wastewater?

4. What do we mean when we say ‘treating wastewater’?

Treating wastewater is to remove contaminants so it can be discharged safely into the environment
Adding chemicals to the wastewater to make it acidic
To discharge wastewater into the environment

5. In a planted gravel filter, how are some of the chemical compounds removed?

The pipes pump out the chemical compounds
The chemical compounds settle to the bottom
Since the chemical compounds act as nutrients for the plants, they get absorbed through the roots

6. What happens to the solids in a septic tank or twin leach pit?

The solids seep into the aquifer
The solids decompose into humanure which can be used as a fertilizer in the fields
These solidify into a rock

7. Where should the sewage go before being released into the environment?

Sewage should always be treated in a Sewage Treatment Plant before being released into the environment
Into the stormwater drain
Into the river

8. Is it ok to release sewage into a stormwater drain?

No, stormwater drains are not meant for sewage since stormwater drains may connect directly to water bodies and not to an STP
Yes, sewage can be released into stormwater drains

9. Is it ok to release industrial effluents into the pipes meant for domestic sewage?

Yes, domestic sewage and industrial effluents can be released into the same pipes
No, industrial effluents should be released into separate pipes connected to a customized effluent treatment plant