Wastewater Treatment Video 4: Primary Treatment

[@studentine]

is it possible to have the primary treatment at the end of the tertiary treatment? since some treatment plants are designed without primary treatment, at 2:41 of the video. thanks!

[@hossainmosabber6973]

I want to know about a simple waste water treatment process from drain waste to use for agriculture production

[@phapuc7088]

"there blow- grade down at bottom of tank" What is it? thanks