and save it. Add more clean water to cover 30% more sand.
•
Add back another 30% of the sand and wash it to remove
all dust. Remove all dirty water and save it. Add more clean
water to cover the remaining sand.
•
Add back the remaining sand and wash it to remove all dust.
Make sure the sand level reaches the line on the inside of the
filter.
•
Fill the filter to the rim with clean water and retest the flow
rate. Add the dirty water if the flow rate is fast. Repeat some
or all of the process if the flow rate is too slow. If still too
slow, contact Triple Quest at 616.254.4114.
•
This process destroys the biolayer, so you must wait two
weeks for layer to regrow.
Water flow rate too fast
(more than .9 liters per minute) – Cause:
Insufficient Filtration Sand or sand not settled.
1. Assure a paused water depth of about 5 cm (2 inches).
2. Rock the filter slightly to gently compact and settle the
Filtration Sand.
3. Add additional Filtration Sand into the top 10–15 cm (4–6 inches)
of the sand layer and pack it down with your hand.
Monitoring
Research shows that when a Hydraid
®
filter is used properly, it
reduces diarrhea by 47-59%. Proper usage depends on proper in-
stallation and monitoring. As part of our shared commitment to high
quality water treatment, the project implementor shall follow-up with
end-users during the first year at one month, three months, and six
months to ensure the filter is being used properly. Critical elements of
successful project implementation and monitoring include the follow-
ing elements:
1. A facilitator(s) selected from the community who attends a train-
ing course and manages a water committee.
2. Project personnel or a trained local water committee that coordi-
nates the filter delivery, installs the filters, educates the families on
use, provides followup up visits, and reports on usage and any
issues.
3. Each family receiving a filter should pay something for the filter
to demonstrate commitment and ownership investment. This
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