BSF (Bio-Sand Filter)

Tsinghua University RISE Bio-Sand Filter ProjectPresenter: Catherine Arnold

Where does water come from?

Where does clean water come from?

?45%

But what happens if you don’t have a tap?

15%

BSF filter!

How does it work?

Don’t drink!

Let’s make a filter!

Why do we still have to boil water?

Hoekstra, Arjen Y. and Ashok K. Chapagain. 2008. Globalization of Water: Sharing the Planet’s Freshwater Resources. West Sussex, UK: Wiley-Blackwell.

Wiley-BlackwellCentre for Affordable Water and Sanitation Technology (CAWST). <www.cawst.org>

Manz Water Info. <www.manzwaterinfo.ca>Vanderzwaag, J. et al. (2009) Field evaluation of long-term performance and use of

biosand filters in Posoltega, Nicaragua. Water Qual. Res. J. 44 (2).Jenkins, M. et al. (2011) Bacterial, viral and turbidity removal by intermittent slow

sand filtration for household use in developing countries: Experimental investigation and modeling. Water Research 45 (6227 – 6239).

Centre for Affordable Water and Sanitation Technology (CAWST). <www.cawst.org>Manz Water Info. <www.manzwaterinfo.ca>Vanderzwaag, J. et al. (2009) Field evaluation of long-term performance and use of

biosand filters in Posoltega, Nicaragua. Water Qual. Res. J. 44 (2).Jenkins, M. et al. (2011) Bacterial, viral and turbidity removal by intermittent slow

sand filtration for household use in developing countries: Experimental investigation and modeling. Water Research 45 (6227 – 6239).

WHO/UNICEF Joint Monitoring Program for Water Supply and Sanitation <http://www.wssinfo.org/documents/?tx_displaycontroller[type]=country_files> Accessed 28/11/14

Sources