Microbes In Human Welfare Question 6
Question: Secondary sludge uses:
Options:
A) gravitational sedimentation
B) primary clarifier
C) non-biodegradable materials
D) micro-organism to consume waste organic
Show Answer
Answer:
Correct Answer: D
Solution:
Option D, micro-organism to consume waste organic, is the correct answer.
In the secondary treatment stage of wastewater treatment, microorganisms are used to consume the organic waste materials present in the sewage.
These microorganisms form clumps called flocs, which settle down to form the secondary sludge. The secondary sludge is then further treated and disposed of safely.
BETA
