What is the name of the high-density layer that supports the fine media in filters?

The high-density layer that supports the fine media in filters is known as a "barrier." In filtration systems, particularly in water treatment or wastewater processes, the barrier serves a crucial role. It provides structural stability to the filter media, ensuring that the finer materials remain in place while still allowing water to flow through.

Having a high-density barrier beneath the fine media helps prevent issues such as channeling, where water finds a path of least resistance and flows unevenly through the filter, potentially leading to reduced efficiency and increased maintenance needs. The barrier also aids in the overall filtration effectiveness, as it contributes to a well-distributed flow and ensures that sediment and unwanted particles are captured efficiently. This concept is fundamental in understanding how layered filtration structures function in various applications, emphasizing the significance of each layer's material properties and placement in the filtration process. The importance of the barrier is foundational in designing effective filter systems.