Accession Number : ADP000788

Title :   Application of Packed-Bed Upflow Towers in Two-Phase Anaerobic Digestion,


Personal Author(s) : Ghosh,Sambhunath ; Henry,Michael P.

Report Date : 1982

Pagination or Media Count : 22

Abstract : The purpose of this research was to investigate the applicability of anaerobic upflow packed beds to serve as the methane-phase digester of an overall two-phase digestion system. In the two-phase anaerobic digestion process, the sequential acid and methane fermentation steps of the overall digestion process are optimized in separate reactors (8). Acidic end-products emanating from the first-stage acid-phase digester are ultimately converted to methane in a second-stage methane-phase digester. In this research, laboratory-scale upflow anaerobic filters were operated with acidic effluents from complete-mix acid-phase digesters fed with particulate and soluble feeds. Specifically, the objectives of the work were: (1) to ascertain whether upflow anaerobic filters can be operated with feeds containing high concentrations of volatile acids (VA), and (2) to evaluate the effects of such operating factors as loading rate, HRT, effluent recirculation ratio, and digester temperature on the conversion of volatile acids and other products of acid-phase digestion to methane.

Descriptors :   *Waste water, *Waste treatment, *Water treatment, *Beds(Process engineering), *Filters, Towers, Anaerobic processes, Acids, Effluents, Methane, Fermentation, Solubility

Distribution Statement : APPROVED FOR PUBLIC RELEASE