Project #4863

Hybrid Anaerobic Primary and Secondary Treatment with Energy Recovery

$621,446
In Progress
Principle Investigator
Linda
Figueroa
Research Manager
Mr. Walter Graf
Contractor
Colorado School of Mines
Treatment
Resource Recovery
Energy Optimization

Abstract

The goal of this project is to demonstrate the efficacy of a low complexity mainstream anaerobic wastewater treatment system for energy generation and increase process understanding. The researchers posit that a hybrid system of anaerobic baffled reactors (ABRs) followed by expanded granular sludge bed (EGSB) reactors and microscreen (ABR-EGSB-MS) can achieve stoichiometric methane production for energy generation with operational simplicity. The ABR system provides treatment with higher removal than conventional primary treatment. The EGSB provides effluent of secondary treatment quality using an expanded bed approach to provide efficient organic (BOD) degradation. The MS removes residual total suspended solids and particulate BOD, and provides stripping of dissolved methane. This approach significantly reduces the number of unit processes and the footprint compared to conventional wastewater treatment.

 Originally funded as WERF project TIRR2R15.