Biological slow-sand filtration

out-of-sequence; upcoming book section

This section provides a basic overview for using biologically active slow-sand filtration (BSSF) as a low-cost, scalable method for controlling harmful pathogenic microorganisms in drinking water that can be paired with biochar adsorption for removal of chemical contaminants.

The primary purpose of BSSF is to remove pathogenic microbes that cause intesti…