Question

Water that is returned to the environment after secondary treatment is known as _____. influent sludge effluent clarifier

Answer 1

Water that is returned to the environment after secondary treatment is known as effluent.

Answer 2

effluent

Step-by-step explanation:

Secondary treatment uses physical phase separation or biological methods to clean the waste water. Influent is the wastewater which enters the secondary treatment system. Clarifier is a huge tank where it is allowed to stand for solid waste particles to settle down. Sludge is the waste material which gets settled down in a clarifier. Effluent is the final product which exits the secondary treatment plant.