Recently, a reader in Canada asked about the beneficial characteristics of the biomat. He had read some articles or fact sheets where the author maintained the biomat has no beneficial aspects and if the total system could be oxygenated and biomat eliminated, there would be no problems in septic systems accepting effluent.
As I read an article the reader referred to, I was struck that the article referred to two different distribution methods. The biomat occurred in either of two locations — on the bottom and sidewalls of absorption trenches or beds, and/or the top surface of a pretreatment aerobic
