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The Wastewater Treatment Facility...
The Aspen Consolidated Sanitation District Advanced Wastewater Treatment Facility, located in Aspen, Colorado, is a 3.0 MGD Conventional Activated Sludge Facility utilizing Preliminary Treatment (Automatic Bar Screen and Aerated Grit Removal), Secondary Treatment (Fine Bubble Diffusion), Secondary Clarification (Square-circles), Aerobic Digestion with Centrifuges for solids removal, Tertiary Treatment (Nitrification Towers, Polishing Ponds and Rapid Sand Filtration), Chlorination (Hypo) and Dechlorination (Sulfur Dioxide). The facility receives its influent from the City of Aspen, an old mining town of the 1800's turned skiing mecca of the 1990's. The effluent is discharged into the Roaring Fork River, a Class I, Cold Water Recreational Fishery (a tributary to the Colorado River System). Wastewater influent flows have long been used as a valuable measurement of the population of tourists, locals and transient workforce in Aspen at any given month. For purposes of calculation, we use 90 gallons per capita per day as the population equivalent. The national average is approximately 125 gallons per captia per day. The smaller number we use takes into account that tourists and transient workers may use less water than they would at home because of the numerous resort activities available to them or that they are just here to work for the day. For flows and loads data from 1992 to present click here. Please see the footnote for a more detailed description of how to interpret the data presented in the table. Updates will be done every six months, so if you require more up-to-date information, just call or E-mail Tracy Dillingham.
