Question

Which of the following steps in wastewater treatment is an example of biotechnology?

Pumping systems push residential water to the treatment facility.
Grit screening helps separate sand from water to prevent clogging.
Specialized bacteria are used to breakdown harmful substances.
The sewer conveyance system removes sewage from buildings.

Answer 1

Specialized bacteria are used to breakdown harmful substances.

Answer 2

In wastewater treatment, the use of specialized bacteria to breakdown harmful substances is an example of biotechnology. This step is known as secondary treatment.

Step-by-step explanation:

One of the steps in wastewater treatment that is an example of biotechnology is the use of specialized bacteria to breakdown harmful substances. This step is known as secondary treatment. In secondary treatment, aerobic bacteria are utilized in a controlled environment to consume the organic components of the sewage. This process helps to remove dissolved and suspended biological matter from the wastewater.