With high mortality rates from inadequate water sanitation in developing countries, the promise of inexpensive and effective water purification methods holds end¬less opportunities to improve public health and living standards. For more than a billion people forced to use con¬taminated water, diseases such as chol¬era, typhoid, chronic dysentery and rotavirus diarrhea are constant prob¬lems that debilitate economic develop¬ment and quality of life.
The enormous cost of implement¬ing municipal water purification and dis¬tribution systems consistently hampers efforts to provide clean drinking water, and the lack of safe supplies perpetuates and aggravates the relentless cycle of poverty and disease. To truly advance the crusade to provide clean, potable water, a solution that's effective, inex¬pensive and simple to operate is neces¬sary.
The solution may reside in a novel use of N-halamine technology. N-halamine chlorinated resin beads, an emerging water purification application, use antimicrobial properties of chlorine to safely purify drinking water supplies at the point-of-use (POU) without elec¬trical power. N-halamine compounds harness chlorine atoms by linking them covalently onto polymeric water filtra¬tion beads with halogen receptors. Wash¬ing the beads periodically with chlorine bleach recharges and greatly prolongs the antimicrobial power, even in a heavily contaminated water source.
The N-halainine chlorinated beads kill the same broad spectrum of patho¬genic microorganisms without adding high concentrations of free chlorine to water flow, maintaining quality and taste while decreasing the generation of trihalomethane (THM) by-products from organics in water. As a result, it's become possible and affordable to bring safe, clean water to impoverished con¬sumers throughout the world.