BIOSAND FILTER: AN ALTERNATIVE TO TREAT DRINKING WATER AT A
HOUSEHOLD LEVEL
Joann Marie Rodríguez PhD Student
UMass Amherst EWRE
Access to clean water
Access to clean water is “essential to the realization of all human rights”United Nations General Assembly under the Resolution 64/292
Intermittent Slow Sand Filter
!"#$%%
"&'$%%
"($%%
)"*"($%%
"($%%
)&*
)'*
)+*
)!*
,,$%%
!(#$%%'(&$%%
-&($%%
+++$%%
)!* ./0/12341 536/
)+* 7896:46; <98/1 536/
)'* =43>3;4?9> 536/
)&* @36A=43>3;4?9> 536/
)"* B192/> 536/
C9?D$3E$3FG;/6$96:$6H814/680
C9?D$3E$3FG;/6$C9?D$3E$3FG;/6$
I/?J964?9>819KK46;
=43>3;4?9>L?84248G
L:031K8436
MLN7O$I96H9>$+((-!"#$%"& '()*+,
MEDIA Drainage Gravel6 - 12mm
SeparatingGravel1- 6mm
Filtration sand< 0.7 mm
• Find the medium:• Crushed rock• River sand
• Sieve
0.1 - 0.7mm
Depth : 1” Depth : ! ” Depth : 6 ”