Siphon filter assessment for Northern Ghana

[摘要] (cont.) If the siphon filter recontamination issue were resolved, the siphon filter would be recommended for households drinking low turbidity water in Northern Ghana over the other treatment options considered. The siphon filter is recommended over chlorine for low turbidity water because chlorine is consumable and requires a substantial wait for treated water, while the siphon filter is more permanent and requires little wait for treated water. Alum plus chlorine treatment is recommended for most households drinking turbid water, with the siphon filter as an alternative treatment method for households desiring a more permanent treatment technology, again if the siphon filter recontamination issue were resolved. The siphon filter is preferred over the Kosim filter because while the Kosim filter can only be cleaned by scrubbing and features a slow flow rate, the siphon filter can be kept clean by other methods (e.g. backwashing) before scrubbing is needed, and has a considerably faster flow rate. Keywords siphon filter, household water treatment and safe storage, safe drinking water, water quality.

[发布机构] Massachusetts Institute of Technology