Question

Trickling filters are called precolating or ....
Filters.
Options
sprinkling
oxidative
reductive
neutralization​

Answer 1

Explanation:

Trickling Filter also known as percolating or sprinkling filter is like a well having depth up to about 2m and filled with some granular media. The sewage is sprinkled over the media which percolates through filter media and is collected through the under-drainage system.