Company Filing History:
Years Active: 1980-1985
Title: Innovations by Donald F Manchester in Biodegradation Technologies
Introduction
Donald F Manchester is an accomplished inventor based in Oakville, CA. He has made significant contributions to the field of biodegradation, particularly in the treatment of spent sulfite liquor (SSL). With a total of 2 patents, his work focuses on developing innovative microbial culture systems that enhance the biodegradation process.
Latest Patents
One of Manchester's notable patents is the "Microbial Culture System." This invention discloses a method for creating a mixed fungal culture that is specifically adapted to biodegrade SSL. The process involves exposing a mixed culture system, derived from sewage treatment plant sludge, to increasing concentrations of SSL until the fungi acclimatize. The resulting biotic population consists of a mixture of yeast and yeast-like cultures, including Phialophora jeanselmei, Phialophora richardsiae, Hyalodendron lignicola, Trichosporon infestans, and Candida tropicalis. The method also includes steps for adding a nutrient medium, adjusting pH, and managing the fermentation process to achieve optimal BOD removal rates of 85 to 90%.
Another significant patent is the "Foam Flotation Activated Sludge Process." This invention similarly focuses on the biodegradation of SSL using a mixed fungal culture. The method emphasizes the importance of maintaining a high mixed liquor suspended solids (MLSS) level and controlling sludge recycling to enhance the efficiency of the biodegradation process. Under optimal conditions, this process also achieves substantial BOD removal from SSL.
Career Highlights
Donald F Manchester is associated with Abitibi Paper Company, Ltd., where he has applied his expertise in developing innovative solutions for environmental challenges. His work has contributed to advancements in sustainable practices within the paper industry.
Collaborations
Manchester has collaborated with notable colleagues, including James E Zajic and Martha A Hill, who have contributed to his research and development efforts in the field of biodegradation.
Conclusion
Donald F Manchester's innovative work in microbial culture systems has significantly advanced the biodegradation of spent sulfite liquor. His patents reflect a commitment to environmental sustainability and the development of effective waste treatment solutions.