Study on Life Span of Ceramic Filter Colloidal Silver Pot Shaped (CSP) Model

Presented to :
Potters for Peace
August – 2005
Enrique Campbell, Consultant
Managua, Nicaragua

 

Introduction
Several studies on the ceramic filter promoted by Potters for Peace have been carried out previously. Nevertheless, since the CSP model started to be distributed it has not been defined for how much time the filter can removes bacteria and parasites effectively. An approach on this issue was conducted in 1999 by the Aquatic Resources Research Center (CIRA, in Spanish) of the Nicaragua National University (UNAN) along a research work on the CSP model. For that study a seven years old filtering element was tested for total coliform, fecal coliform an fecal streptococcus removal. The esults obtained showed that the CSP was capable of removing all the total coliform and fecal coliform organism, but also increase slightly the concentration of fecal streptococcus (see more details in Lantagne 2001). It should noted that the seven years old filtering element that was used for the test was one of the first prototypes, and it was a little bit smaller than those that exist and are distributed today which is why the mentioned results couldnÂ’t be taken as conclusive for the new type of CSP model.

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