Which loading rate is used to calculate the total area of the absorption bed within the mound?

The basal loading rate is the crucial metric used to determine the total area of the absorption bed within a mound system. This approach focuses on evaluating the volume of effluent that is applied to the ground in relation to the available soil area beneath the mound. It essentially reflects the amount of wastewater that can be managed on a per-square-foot basis. By using the basal loading rate, designers ensure that the absorption area is adequately sized to prevent overloading of the soil and to promote effective treatment as wastewater infiltrates and interacts with the soil matrix.

The correct application of the basal loading rate contributes to sustainable management of onsite wastewater treatment systems, supporting environmental protection by reducing the potential for contamination of groundwater and surface water. Understanding and applying this concept accurately is essential in the design and implementation of mound systems to ensure their efficacy and longevity.