The coagulant etc are removed ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
The coagulant etc are removed in the flocculation and sedimentation process before the final filter. There is not a lot of biological activity on a rapid sand filter. There is a lot of removal on a slow sand filter, but you would not have one after coagulation.
1 Comment
So ,.can be concluded that mainly all positive charge and neutral NOM are removed before filtration step? We have seen no more of 50% removal of TOC, so the other 50% portion escapes coagulation - flocculation- sedimentation . How to explain this?
Published by CARLOS GONZALEZ, CTO at Carlos Gonzalez