A WATER FILTRATION, PURIFICATION AND STORAGE UNIT CAPABLE OF SERVING A COMMUNITY OF 2000 PEOPLE OR FOR USE IN DISASTER AND RELIEF SITUATIONS

A portable filtration and chlorinisation system intended for the purification of non-saline water drawn from a variety of sources e.g. surface water, river, borehole etc. to drinking water conditions. This is achieved by the already flocculated water passing through two primary filters. Chlorinisation takes place by the use of a water-driven dosing pump capable of dosing at the rate of 2ppm and upwards as required. The water then passes through its final stage of purification where use is made of an advanced filter media. This media is self -sterilising because of its permanent high surface catalytic properties and negative zeta potential. The negative zeta potential allows the filter media to adsorb positive charged metal ions from the water such as iron and manganese. The water having passed through this filter is of micron or sub - micron standard. The treated water is then stored in an incorporated holding tank ready for later use as and when required. This stored water is used when it becomes necessary to backwash the system. Such a high degree of efficiency has been achieved in the backwashing system that the filter media will never need to be replaced. Further polishing of the water may be achieved though the use of a specially designed activated carbon system which brings the water to bottled water standards. According to a second aspect of the present invention, this water treatment unit is carried on a trailer which incorporates its own specially designed flocculation and header tank rendering the unit of special usefulness in disaster and relief situations and also for the military on manoeuvres etc. Both systems as described produce 1000 litres per hour of good potable water meeting the needs of small communities of approximately 2000 people. L'invention porte sur un système de filtration et de chloration portable conçu pour la purification d'eau non salée extraite d'une variété de sources, par exemple de l'eau de surface, d'une rivière, d'un trou de forage, etc., à des conditions d'eau potable. Ceci est obtenu par le passage d'eau déjà floculée à travers deux filtres primaires. La chloration est effectuée à l'aide d'une pompe de dosage entraînée par l'eau, apte à effectuer un dosage à la proportion de 2 ppm et plus, selon les besoins. L'eau passe alors par son étape de purification finale, où il est fait usage d'un milieu filtrant avancé. Ce milieu est auto-stérilisant, du fait de ses propriétés catalytiques de surface élevées permanentes et d