An important but brief study was published last year by individuals working with the RDIC factory in Cambodia to find what factors make a more efficient ceramic water filter. In this study several empirical tests were preformed to investigate the relationships between filter mix ratios and firing schedules. Perhaps the most relevant results demonstrated by these tests demonstrated the lack of corr...
The flow rate can be increased by:
1. increasing the porosity of the filter, by increasing the quantity of burn-out material in the clay mix; and
2. increasing the pore size, either by
changing the particle size distribution of the burnout material, or by
changing the maximum firing temperature.
The bacteria removal effectiveness is only compromised when in...
At Potters Without Borders our focus is on the transfer of skills required to manufacture strong, effective ceramic pot water filters. Manufacturing filters as an appropriate technology requires the utilization of locally sourced skills and raw materials. For technicians, the main challenge is to go through the process required to develop a working filter body within a short time, using greatly va...
The first four filters from the PWB filter press. All produced using 50-50 mix of clay and sawdust. From left to right are, numbers: 1/18/07-4, 1/18/07-1, 1/18/07-2, 1/18/07-3. Details as follows:
PWB Filter Batch Tests:
Ceramic Water Filter Test Batch No. 1
Thursday January 18, 2007
Mix Proportions @ approximately 50-50 by volume
Plainsman Red Earth Clay 44lbs.
Screened Sawdust 7lbs.
Water 21 l...