Easy
1 point
ID: #19434
Question
Which one of the following is used in trickling filter?
Options
1
filtration process
Correct Answer
2
biological action
Correct Answer
3
none of a or b
Correct Answer
4
both a and b
Correct Answer
Explanation
A trickling filter uses biological action where sewage trickles over a media (stones/plastic). It acts as a biological reactor, but the trickling also implies a filtration-like process.