Publications by Samuel Lochmatter

Role of ammonia-oxidizing bacteria in micropollutant removal from wastewater with aerobic granular sludge

David Andrew Barry, Christof Holliger, Jonas Margot, Samuel Lochmatter

Nitrifying wastewater treatment plants (WWTPs) are more efficient than non-nitrifying WWTPs to remove several micropollutants such as pharmaceuticals and pesticides. This may be related to the activity of nitrifying organisms, such as ammonia-oxidizing bac ...

IWA Publishing2016

Optimization of operation conditions for the startup of aerobic granular sludge reactors biologically removing carbon, nitrogen, and phosphorous

Christof Holliger, Samuel Lochmatter

The transformation of conventional flocculent sludge to aerobic granular sludge (AGS) biologically removing carbon, nitrogen and phosphorus (COD, N, P) is still a main challenge in startup of AGS sequencing batch reactors (AGS-SBRs). On the one hand a rapi ...

Elsevier2014

Nitrogen Removal over Nitrite by Aeration Control in Aerobic Granular Sludge Sequencing Batch Reactors

Christof Holliger, Julien Maillard, Samuel Lochmatter

This study investigated the potential of aeration control for the achievement of N-removal over nitrite with aerobic granular sludge in sequencing batch reactors. N-removal over nitrite requires less COD, which is particularly interesting if COD is the lim ...

Mdpi Ag2014

Optimization of Reactor Startup and Nitrogen Removal of Aerobic Granular Sludge Systems

Samuel Lochmatter

Aerobic granular sludge (AGS) in sequencing batch reactors (SBR) has recently made its proofs as full-scale technology for the biological treatment of urban wastewater. In contrast to conventional flocculent activated sludge, microorganisms aggregate to de ...

EPFL2013

Optimized aeration strategies for nitrogen and phosphorus removal with aerobic granular sludge

Christof Holliger, Samuel Lochmatter, Graciela Gonzalez Gil

Biological wastewater treatment by aerobic granular sludge biofilms offers the possibility to combine carbon (COD), nitrogen (N) and phosphorus (P) removal in a single reactor. Since denitrification can be affected by suboptimal dissolved oxygen concentrat ...

Elsevier2013

Significance of Rhodocyclaceae for the formation of aerobic granular sludge biofilms and nutrient removal from wastewater

Christof Holliger, David Gregory Weissbrodt, Samuel Lochmatter

The competition of two Rhodocyclaceae-affiliated bacterial populations was assessed during the formation and maturation of aerobic granular sludge in two different types of anaerobic-aerobic sequencing batch reactors. Zoogloea spp. (57%) were predominant i ...

Tongji University2011