Where have other landfills containing water treatment residuals been created in urban settings?
One similar, nearby residuals monofill is located on the site of the Upper Occoquan Sewage Authority (UOSA) Wastewater Treatment Plant. The monofill is across the road from a residential subdivision in Centreville, Virginia. This plant treats municipal wastewater to near drinking water standards prior to discharging plant effluent into a tributary of the Occoquan Reservoir. The plant uses a treatment process known as “high lime treatment” for this. The lime residuals by-product produced by this treatment process are gravity thickened and dewatered on site and then deposited in the dedicated on-site monofill. The characteristics of the lime solids are similar to, although not precisely the same as, the Washington Aqueduct water treatment residuals.
