Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Household</strong> <strong>Water</strong> <strong>Treatment</strong> <strong>and</strong> <strong>Safe</strong> <strong>Storage</strong><br />
Product Sheet: LifeStraw ® Family<br />
<strong>Treatment</strong> Type<br />
Product Name:<br />
Manufacturers:<br />
Product Description:<br />
LifeStraw ® Family<br />
Vestergaard-Fr<strong>and</strong>sen<br />
LifeStraw ® Family is a water filtration <strong>and</strong> disinfection system that<br />
uses gravity to move water through it. The untreated water is<br />
poured into a container at the top. <strong>Safe</strong> water comes out of the<br />
blue tap at the bottom.<br />
The inlet water is treated first by a pre-filter with a pore size of 80<br />
m, located in the upper container. This pre-filter removes large<br />
particles <strong>and</strong> sediment. <strong>Water</strong> then flows down the hose due to<br />
gravity, <strong>and</strong> into the purification cartridge. Inside the purification<br />
cartridge, the water is filtered again through a membrane with a<br />
pore size of 0.02 m (20 nm). This ultrafiltration step removes<br />
remaining pathogens <strong>and</strong> turbidity.<br />
Each time the filter is used; the user<br />
must open the red valve at the bottom<br />
of the purification cartridge <strong>and</strong> let<br />
water flow out for 5 to 30 seconds. This<br />
empties the cartridge of air <strong>and</strong> allows<br />
maximum treatment. <strong>Water</strong> from the<br />
red outlet should not be drunk.<br />
Availability:<br />
Robustness:<br />
Lifespan:<br />
Must be purchased from Vestergaard<br />
Fr<strong>and</strong>sen (regional offices located in<br />
parts of Africa <strong>and</strong> Asia) <strong>and</strong> imported.<br />
Not available on single unit basis, large<br />
quantities must be purchased.<br />
Using Lifestraw Family<br />
(Credit: Vestergaard-Fr<strong>and</strong>sen)<br />
Requires no electricity or spare parts.<br />
There is a chlorine chamber at the<br />
bottom of the upper container which adds a small amount of<br />
active chlorine to the water for the purpose of protecting the<br />
ultrafiltration membrane from fouling, extending the life of the<br />
membrane. The pre-filter <strong>and</strong> purification cartridge require daily<br />
cleaning to prevent clogging<br />
18,000 litres (about 2.5 years at 20 litres/day)