What does a biomat consist of in an onsite wastewater treatment system?

A biomat in an onsite wastewater treatment system primarily consists of a layer of microorganisms that develop in the soil absorption field. This biomat is essential for the treatment of wastewater as it plays a crucial role in the breakdown of organic matter and the removal of contaminants from effluent. The microbes present in the biomat facilitate the biological processes necessary for purifying water before it percolates into the surrounding soil.

In terms of functionality, the biomat helps in filtering and treating wastewater through various mechanisms such as adsorption, bio-degradation, and filtration, ensuring that harmful pathogens and nutrients are effectively removed. The proper formation and maintenance of this layer are vital for the system's performance and longevity. It highlights the significance of biological activity in onsite wastewater treatment and underscores the integrated nature of this approach to managing waste.