Question

Bacteria are important in sewage disposal because they _____.

neutralize sewage.
form vacuoles in sewage.
digest sewage.
form membranes around toxins in sewage.

Answer 1

Bacteria are used in sewage for decomposition, in other words, to digest sewage.

In the sewage you can find different materials, such as human waste and greywater in general, all good for bacteria.

Hope it helped,

BioTeacher101

Answer 2

The right answer is digest sewage.

They are called anaerobic membrane bio-reactors. Their principle is simple: Bacteria are placed in the water to be cleaned and they feed on the polluting elements; it is then sufficient to recover the water leaving the bacteria aside.

Anaerobic bacteria can do without the oxygen in the air, but the water should be heated to about 37 ° C. The necessary energy being freely supplied by the sun, the operation is perfectly ecological.