Multi-barrier
Best strategy: multi-barrier
07/28/11 15:05
"I was intrigued by the efficacy of Moringa seeds in removing water turbidity. I was wondering if the quality of water treated by Moringa seeds could further be improved by application of other purification techniques say filtration?"
Response
Absolutely, a multi-barrier intervention is the best strategy for providing the safest quality of drinking water.
Education and training, emphasizing environmental awareness, hygiene, and sanitation are thus first necessities. Reduction of excessive turbidity and particulates by settlement or pre-filtration or coagulation / flocculation establishes a second barrier. Removal of parasites, protozoal cyst, bacterial pathogens, and in some situations removal of chemical contaminants (e.g. arsenic) by filtration is the third barrier. The fourth and final barrier, safe storage in a closed container and providing a disinfectant (e.g., SODIS) are all key aspects to strengthen local capacity to carry out sustainable community-based primary health care. -- Michael
