JIPMER 2009
- Exam
- JIPMER
- Year
- 2009
- Subject
- Zoology
- Chapter
- Microbes in Human Welfare
JIPMER 2009 · Zoology · Microbes in Human Welfare
In the treatment of waste water discharge, which treatment stage...
In the treatment of waste water discharge, which treatment stage involves biological treatment?
Options
- APrimary treatment
- BSecondary treatment
- CTertiary treatment
- DReverse osmosis stage
Correct answer
B. Secondary treatment
Step-by-step solution
During waste water treatment :
(a) Primary treatment involves physical process of removing the suspended matters.
(b) Secondary treatment involves biological treatment.
(c) Tertiary treatment involves the removal of phosphate, nitrate and sulphate.