Accession Number : ADP000794

Title :   Energy Recovery from Pretreatment of Industrial Wastes in the Anaerobic Fluidized Bed Process,

Corporate Author : DORR-OLIVER INC STAMFORD CONN

Personal Author(s) : Li,Alan ; Sutton,Paul M. ; Corrado,Joseph J.

Report Date : 1982

Pagination or Media Count : 21

Abstract : The conclusions derived from the results presented in this paper include the following: (1) High strength industrial wastewaters, such as whey permeate, can be effectively treated by the anaerobic fluidized bed process and the energy generated, recovered. COD and BOD5 removals of over 80% can be obtained at volumetric loading rates over 24 kg COD/cu m 3 -day (1.5 lb COD/sq ft 3 -day). The observed methane production will be approximately 0.3 cu m 3/kg COD at STP. (2) Parallel operation of two Anitron System reactors at two different levels of feed concentration revealed that there appears to exist a maximum system hydraulic retention time beyond which microbial solids begin to proliferate in the liquid phase of the system. In the treatment of whey permeate at a volumetric loading rate of 16 kg COD/cu m 3 -day, the maximum system HRT corresponds to a maximum system HRT corresponds to a maximum feed COD concentration of approximately 15,000 mg/1. (3) Results to date indicate the superior performance of the two-phase operation over the single phase system at a volumetric loading of 10 kg COD/m3 -day. Studies are under way to evaluate the two-phase performance at higher loading rates.

Descriptors :   *Waste water, *Waste treatment, *Water treatment, *Wastes(Industrial), Fluidized bed processes, Anaerobic processes, Facilities, Energy, Recovery, Pilot plants, Organic materials, Removal, Methane, Operation, Production, Two phase flow

Distribution Statement : APPROVED FOR PUBLIC RELEASE