Reputable suppliers: N/A HQ Instruction of use advantages Bring water to a rolling boil for 1 minute ⦁ Effectively kills most pathogens ⦁ Simple and widely and allow to cool. At altitudes greater accepted than 2,000 m, boil water for 3 minutes. () disadvantages Add salt to improve taste. ⦁ Taste may become flat – salt can be added ⦁Time consuming ⦁contributes to deforestation problems in many countries If water is cloudy or muddy, water can be Flow rate: N/A pre-treated. Shelf life/Life span: N/A Steps in operating: Simple Maintenance: N/A Household storage precautions: N/A Authorisation: N/A Weight and volume: N/A Location to ship from: N/A Stock capacity: N/A Cost estimation: US$ 0.272 per month for wood collectors and US$ 1.68 per month for wood purchasers, representing approximately0.48%to1.04%, respectively, of the average monthly income of participating households in Vietnam 2008. () Litres treated: N/A Cost per 1000 litre ratio: N/A Ensure available safe water storage for collecting, treating and storing water (see Annex 3). References Chemicals for Chemicals with Disinfection by Ceramic and Bio Sand Filtration disinfection combined treatment UV/heat ultra filters SODIS For clear water Health aspects: Disinfection If cloudypre-treatment Bacteria: Protective Viruses: Less protective Protozoa: Protective Description HQ ⦿ Confined storage can prevent recontamination A simple and low cost technology using solar radiation from the sun to kill % Requires strong sunlight during the whole day. bacteria and viruses. The heating of the % Oversimplification can affect users not to treat water (pasteurisation) can kill protozoa. () water correctly.
Instruction of use Bring water to a rolling boil for 1 minute and allow to cool. At altitudes greater than 2,000 m, boil water for 3 minutes. () Add salt to improve taste. If water is cloudy or muddy, water can be pre-treated. HQ Reputable suppliers: N/A advantages ⦁ Effectively kills most pathogens ⦁ Simple and widely accepted disadvantages ⦁ Taste may become flat – salt can be added ⦁Time consuming ⦁contributes to deforestation problems in many countries Flow rate: N/A Shelf life/Life span: N/A Steps in operating: Simple Maintenance: N/A Household storage precautions: N/A Authorisation: N/A Weight and volume: N/A Location to ship from: N/A Stock capacity: N/A Cost estimation: US$ 0.272 per month for wood collectors and US$ 1.68 per month for wood purchasers, representing approximately0.48%to1.04%, respectively, of the average monthly income of participating households in Vietnam 2008. () Litres treated: N/A Cost per 1000 litre ratio: N/A Ensure available safe water storage for collecting, treating and storing water (see Annex 3). References Chemicals for disinfection Chemicals with combined treatment Disinfection by UV/heat Ceramic and ultra filters Bio Sand Filtration SODIS For clear water If cloudypre-treatment Disinfection HQ Health aspects: Bacteria: Protective Viruses: Less protective Protozoa: Protective ⦿ Confined storage can prevent recontamination % Requires strong sunlight during the whole day. % Oversimplification can affect users not to treat water correctly. Description A simple and low cost technology using solar radiation from the sun to kill bacteria and viruses. The heating of the water (pasteurisation) can kill protozoa. ()
Household-Water-Treatment-and-Safe-Storage-in-Refugee-Situations-UNHCR.docx