Achieving biofilm control in a membrane biofilm reactor removing total nitrogen

Spectroscopic characterization of extracellular polymeric substances from a mixed culture dominated by ammonia-oxidizing bacteria

“…On the other hand, a high content of EPS could result in poor reactor performance, e.g., increased rate of membrane fouling in membrane bioreactors (MBRs) (Jiang et al, 2013;Wang et al, 2012). In addition, mass transfer could be a rate-limiting step for nitrogen removal (Hwang et al, 2010;Manz et al, 2003) due to the high density and abundance of EPS in the granules or biofilms (Sheng et al, 2010;Vlaeminck et al, 2010). Hence, the reactor performance would rely upon the amount and characteristics of the EPS in the microbial aggregates responsible for autotrophic nitrogen removal.…”

Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich wastewater

“…Their results clearly indicate that MABs have a wider application range and a better TN removal performance than conventional biofilms [28,29]. However, it was found that it is difficult to maintain a stable and high nitrogen removal performance without an effective biofilm control [27,33]. From startup to steady-state, there are changes of biofilm structure and microbial populations in membrane aerated biofilms.…”

Influence of light and temperature on the development and denitrification potential of periphytic biofilms

“…Therefore, lower PAR and moderate temperature conditions are preferred for removing nitrogen from wastewater using periphytic biofilms. Performance of biofilms in pollutant removal has been found related to their thickness in membrane biofilm reactors previously (Hwang et al, 2010). Increase of biofilm thickness overtime can reduce the mass transfer and shift microbial composition of the biofilms (Larned et al, 2004;SzabÓ et al, 2008).…”