. . . . . . is the first step of sewage treatment.

Which process is used to remove floating debris from sewage?

Sewage or municipal waste should not be directly passed into rivers,streams and other water bodies because
$I.$ it contains human excreta and other organic waste
$II.$ it contains a number of pathogenic microbes
Which of the statement given above is/are correct?

Secondary treatment of sewage

What is the composition of flocs?

During which process are flocs formed?