sorry guys, i forgot to add the water output valve.
i understand that a big bubble will form at the inverted V.
what about i change that to a V shape? i just want the bubbles to swirl in the tube and then mix around with the water outside the tube for maximum contact time.
btw, TL what is the buffer you have added in the diagram? i do not seem to understand it.
AT, you mentioned about thick foam and swirling water will make a good skimmer. will it help if i enlarge the tube? i have this idea of modifying a venturi valve to have two air input tubes . will that increase the number of bubbles made? FYI, i am intending to blast the skimmer with a 5000l/h pump. is it enough to generate a thick froth?
If anyone has any better ideas, please feel free to use my diagram or explain it in your post.