High flow-through gravity purification system for water

摘要

Disclosed herein is a purification material for a gravity-fed purification system, that provides a high rate of water flow through the material, requires minimal head of water to effect a flow rate and purification rate acceptable to consumers, and provides good removal of contaminants from water, rendering it purified and potable. The purification material is in the form of a flat layer of low ash catalytic carbon having a nominal particle size range of 20 mesh to 50 mesh. The catalytic carbon may be acid-washed and heat-treated with ammonia gas.