The City of Richland Wastewater Treatment Facility (WWTF) is a conventional secondary activated treatment facility permitted for 11.4 million gallons flow per day. The current flow into the WWTF averages about 6 million gallons per day, and mainly serves Richland’s 50,000 residents and 11 significant industrial users. The WWTF discharges treated effluent to the Columbia River. The Facility recently completed a $3 million dollar solids upgrade which included new belt filter presses for solids dewatering of anaerobic digested biosolids, and a rotary drum thickener to thicken secondary waste activated sludge.
The WWTF generally produces 650 dry tons of Class B biosolids which is combined with over 5000 dry tons of yard waste and composted.
The compost facility is located at the City of Richland Horn Rapids Landfill, within the Quad-Cities area which includes the Cities of Richland, Kennewick, Pasco, and West Richland with a total population of nearly 300,000 residents. The compost facility receives mostly yard waste from City of Richland residents which is either picked up at curbside by the City’s Solid Waste Collection Division, or is self hauled to the landfill by residents. Yard waste is also brought in by non- Richland residents, and from landscaping businesses located area wide.