Question

What is sludge? Explain how it is treated.only right answer
with explanation pliiiiiiiiiiiiiiz
​

Answer 1

Semi-solids such as faeces that settle down during wastewater treatment are called sludge. This sludge is removed using a scraper and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.

Answer 2

Answer:

Here is your correct answer..

And if it is helpful to you so mark me as the brainliest