Computer Controlled Biofilm Process Unit

Details

The Computer Controlled Biofilm Process Unit, "PPBC", has been designed by EDIBON to study the operation of a trickling filter, which removes microorganisms and filters contaminated water. The unit simulates the treatment given to water in a wastewater treatment plant. The main element of the unit is the trickling filter. To produce the biofilm, the filter must be filled with carrier material, wastewater and activated sludge before starting the process. When the process starts, the wastewater is impelled by a computer controlled pump, reaching the top of the trickling filter. Once there, it is scattered by a rotary distributor and drops down to the carrier material. A biofilm (a layer of microorganisms nourished from water organic contaminants) grows in this material. Both the breakdown of biological components and water nitrification take place in the trickling filter. Afterwards, wastewater goes to a collection tank, one part is recycled with the aid of two computer controlled pumps and returns to the trickling filter inlet. Activated sludge leaving the filter goes to a clarifier that separates it from water. Clean water goes to the collection tank and the activated sludge goes