Sequential batch membrane bio-reactor for wastewater treatment: The effect of increased salinity

Nitrous oxide emissions in a membrane bioreactor treating saline wastewater contaminated by hydrocarbons

“…This result is in good agreement with previous studies that outlined the high sensitivity of autotrophic species to salt variations (Mannina et al, 2016d). For further details on the respirometric results as well as on biokinetic/stoichiometric parameters, the reader is addressed to literature (Mannina et al, 2016b).…”

“…The pilot plant was started up with activated sludge inoculum at a Mixed Liquor Suspended Solids (MLSS) concentration of 4 g L À1 acclimated at a feeding salt rate of 10 g NaCl L À1 . The acclimation period (from 0 to 10 gNaCl L À1 ) had an overall duration of 85 days (Mannina et al, 2016d). The MBR pilot plant was operated with hydraulic retention time (HRT) of 16 h.…”

Carbon and nutrient biological removal in a University of Cape Town membrane bioreactor: Analysis of a pilot plant operated under two different C/N ratios

“…The SOUR trend was also confirmed by the decay rate b H , which also showed a decreasing trend (Fig. 4b), thus confirming its usefulness as direct indicator of biomass viability [34]. Moreover, it was observed a storage phenomenon, likely due to dynamic conditions related to the alternation of anaerobic, anoxic and aerobic conditions, typical of UCT systems.…”

Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study

“…The main aim of the study was to gain insight about the short term effect of this gradual salinity increase on N 2 O emission both from oxic and anoxic tanks. The present study is part of a wider research project focused on the use of a non-specialized bacterial consortium for the treatment of saline wastewater contaminated by hydrocarbons [32,33]. The present paper reports the results of a part of the study aimed at analyzing the effect of salinity up to 10 g NaCl L −1 , that was recognized to represent a sort of threshold value, beyond which a significant impact on bacteria might occur [27].…”