Published by Salamatu Bashir
We have used biosand filters in groundwater remediation and one of the critical dimensions for consideration is pore size and to have the sand that is being used to be pre-washed so that fines are eliminated otherwise they are not backwashable and the fines will blind the filter.
Published by John Salonich, Vice President / Managing Director
We have been building them with local supplies for over a decade now. CAWST is a great source and has helped along the way https://aquaclara.org/what-we-do/water-purifiers/bio-sand-filter/
Published by Jay VandenBrink