Starting with a Product in Mind – Biosolids Design Based on Beneficial Use Goals

Biosolids generators across the United States are beginning to reevaluate their biosolids processing and management programs to consider new technologies and products. As part of this process, generators are considering new regulatory requirements, more flexible outlets, and the concept of biosolids as a product. The focus of these evaluations is no longer technology centered, but rather focused on the quality of the product and the best use for the biosolids product. As part of their Long-Term Biosolids Master Planning effort, Howard County Department of Public Works (DPW) fulfilled their goal to select a solids processing technology that reduces volume and generates a Class A Exceptional Quality biosolids product that could be use locally in both agricultural and non-agricultural markets. In this case, product quality characteristics were important in entering local markets. Key aspects of the processing technology selection process will be discussed, including establishing County goals, identifying and surveying local beneficial use markets, selecting a solids management alternative, and ultimately selecting the dryer technology which fulfills the County’s established objective.