Control of scum accumulation in a double stage biogas collection (DSBC) UASB reactor treating domestic wastewater.
This paper presents an innovative reactor concept which is based on a double-stage biogas collection (DSBC) device aimed at controlling scum formation and accumulation in UASB reactors treating municipal wastewater. Scum production inside a control reactor and a DSBC-UASB reactor was compared and much lower scum yield coefficients were observed for the DSBC-UASB reactor. However, the mass balance indicated that the dominant control mechanism was scum disaggregation and exit to settler zone rather than scum degradation.
Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
J O
JO
Pereira
J S S
JS
Celani
C A L
CA
Chernicharo
D019149:Bioreactors; D005740:Gases / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods*
D005740:Gases