Company Filing History:
Years Active: 1995-1999
Title: Innovations by Robert E. Fergen in Wastewater Treatment
Introduction
Robert E. Fergen is an accomplished inventor based in Raleigh, NC, known for his significant contributions to wastewater treatment technologies. With a total of two patents to his name, Fergen has developed innovative methods that enhance the dewatering and pathogen reduction of wastewater biosolids.
Latest Patents
Fergen's latest patents include a method for the chemical conditioning of liquid and semi-liquid sludge for dewatering. This method improves the dewatering and odor reduction characteristics of wastewater sludge, sediments, or soils. It ultimately forms a dewatered solid residual that is suitable for distribution and marketing, particularly in fertilizer blends. The process meets Class A pathogen reduction standards by achieving disinfecting conditions through the addition of selective acids and bases, which form insoluble precipitates and enmesh solids to create a granular product. The applicability of this method spans municipal, agricultural, food processing, and industrial sludges.
Another notable patent is a method of treating wastewater biosolids that effectively destroys pathogens and indicator organisms. This method adheres to the USEPA Process to Further Reduce Pathogens standards. It involves initially depressing the pH to below 5, followed by an increase to 12 or higher, which generates an exothermic reaction. The mixture is maintained at a temperature of at least 55 degrees Celsius for a minimum of two hours. The resulting biosolid materials are suitable for general nutrient values with minimal regulatory restrictions.
Career Highlights
Robert E. Fergen is associated with Hazen & Sawyer, P.C., where he applies his expertise in environmental engineering and wastewater treatment. His work focuses on developing innovative solutions that address the challenges of wastewater management and sustainability.
Conclusion
Robert E. Fergen's contributions to wastewater treatment through his innovative patents demonstrate his commitment to improving environmental practices. His methods not only enhance the efficiency of wastewater treatment processes but also promote sustainability in the management of biosolids.