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Oxfam Tank Liner damaged by Insects
Hi, we constructed an Oxfam water tank, 70 and 90m3, on an elevated platform. The platform consists in a round brick wall back filled with brick chips and sand. On top of the tank platform we erected the tank. Inside there is at 4 inch sand layer to protect the tank liner. Now we discovered over 60 small holes in the tank liner caused by probably termites from the bottom into the tank. The termites must have been in the backfill material and eat the liner to reach the comfortable stable and cool temperatur of the tank. How would you get rid of the insects? Concrete layer between liner and platform as a physical barrier? What about insecticides, but that might not be the greatest option regarding the proximity of drinking water? Any advice or ideas? :-) Thanks!
Oxfam Tank Liner damaged by Insects
Hi,
Hey,
we constructed
an
several
Oxfam water
tank,
tanks,
70 and 90m3, on
an
2m and 3m
elevated
platform.
platforms.
The platform consists
in
of
a round brick wall
back filled
back-filled
with
brick chips
brick-chips
and sand. On top of the tank platform we erected the
tank.
tanks.
Inside
on top of the platform
there is at 4 inch sand layer to protect the tank liner. Now we discovered
in two tanks
over 60 small holes in the tank
liner
liner,
caused by probably
termites
termites, only
from the bottom into the
tank.
tank, no holes in the walls.
The termites must have been in the
backfill
back-fill
material and
might
eat
holes into
the liner to reach the comfortable stable and cool temperatur of the
tank.
tank.
How would you get rid of the insects? Concrete layer between liner and platform as a physical
barrier? What about
insecticides,
insecticides as a chemical measure,
but that might not be the greatest option regarding the proximity of drinking water? Any advice or
ideas?
:-)
:-)
Thanks!