In what stage of wastewater treatment is 90 percent of the oxygen-demanding substances removed from the waste by microbes? prima

Question

Marrrta [24]

3 years ago

12

In what stage of wastewater treatment is 90 percent of the oxygen-demanding substances removed from the waste by microbes? prima

ry treatment. secondary treatment. tertiary treatment. septic tank treatment.

Chemistry

2 answers:

Gelneren [198K] · Answer 1 · 2022-04-16T11:19:37+03:00

Gelneren [198K]3 years ago

4 0

I think the correct answer would be secondary treatment. Oftentimes at this stage, microbes are being used to treat the wastewater. It is the heart of the process since a big part of the harmful substances are lowered at this stage. Hope this helps.

Kamila [148] · Answer 2 · 2022-04-16T13:26:12+03:00

Kamila [148]3 years ago

4 0

I need an answer for this question. here are the choices

primary treatmentsecondary treatmenttertiary treatment<span>septic tank treatment</span>