Which statement is true regarding folded-plate stainless underdrains?

Folded-plate stainless underdrains are designed to enhance the backwashing process in filtration systems by providing efficient air/water backwash capabilities. The unique design allows for improved distribution of air and water during backwashing, which helps to dislodge trapped particles and maintain optimal flow rates. This simultaneous backwash function is essential for effective filtration, as it ensures that the medium can be adequately cleaned without the need for excessive downtime or operational interruptions.

In contrast, traditional underdrains may not provide the same level of efficiency in achieving simultaneous air/water backwash, making folded-plate systems a preferred choice for many applications. This enhanced backwashing capability supports higher filtration performance and reliability, making folded-plate stainless underdrains a valuable component in modern water treatment processes.