Hello Megan, The main risk ...
Published by François CORNET, CEO at SAS MAANEO
Hello Megan,
The main risk concerning the process you choose is clogging, due to biofilms and/or unsufficient SS settling in the septic tank (decantation of hair is fairly difficult).
Did you consider designing a vertical flow constructed wetland, directly fed with raw water?
It requires a higher water head than HFCW, but SS are trapped on the surface of the filter and mineralize rapidly. Together with alternate feeding of 2-3 subfilters, this totally prevents clogging.
Depending on the organic load and outlet spec, total surface area could be between 50 and 90 m², in 1 or 2 stage VFCW.
Good luck for your project!
François (France)
1 Comment
Hi Francois, I will see how the pilot study works out but yes, that makes sense. Particulary with the high volume of charcoal dust in the water. Thanks!
Published by Megan Galloway, Water consultant at Royal HaskoningDHV