Abstract:
Needless to say that water is perhaps the scarcest commodity of the 21st
century. On global scale, it is assessed that over the next two decades, water use
by human beings will increase by 40% and 7% more water will be needed to
grow more food for the increasing population. In this context, we could figure out
the need for water harvesting. There are numerous technologies developed and
adopted for rain water harvesting. But, now the innovation continues on the
filtering system. This study focused on developing an improved and simplified
rooftop rainwater filtering system. The design includes the construction of an
upward flow filter using a 100 micron mesh. The unique feature of the system is
its ease of cleaning. The filter performs more effectively in the removal of
suspended particles. The discharge rate of the filter was found to be very high.
The quality of harvested water was tested to ensure its potability standards. The
system gives a filtration rate of 3.83 m 3 /min/m 2 and efficiency of 91.5 %. It can
be concluded that the designed filter system satisfy our objectives and can be used
for household as well as community needs.
