Stone

of stone media, including surge stone, depends on specific characteristics like size, void space, and surface area. Considerations for using surge stone in a trickling filter Size and uniformity: The rocks must be a uniform size, typically 3 inches in diameter, to create sufficient void space for v

entilation. If the stones are not uniform, smaller pieces can fill the gaps and reduce the flow of air and wastewater, leading to clogging and poor treatment.