Letter Re: Seeking Advice on Rainwater Catchment and Filtration
Sir: I am an environmental engineer. You posted a letter that inquired as to whether a ceramic water filter was capable of removing chemicals that leach from plastic containers. The answer is no, a ceramic microfilter will not remove the chemicals. Aside from reverse osmosis, which requires pressures that are too high [for treating large volumes of water] in a survival situation, the best choice for treating water with chemical contaminants is to use activated carbon. Activated carbon is very cheap, widely used by municipal water treatment plants, and is highly effective at removing many organic contaminants (through adsorption). I …