Search results for "Salinity shock"

showing 2 items of 2 documents

A comprehensive comparison between halophilic granular and flocculent sludge in withstanding short and long-term salinity fluctuations

2018

The effects of salinity fluctuations on the activity of autochthonous halophilic bacteria in aerobic granular sludge (AGS) and flocculent activated sludge (FAS) reactors were investigated. The response of nitrifiers and denitrifiers activity to drastic and moderate salinity shocks in the short-term (ST) and long-term (LT) was examined. The BOD5removal efficiency decreased only in the reactors subjected to the drastic LT salinity increase. Nevertheless, stable performances were achieved 18 days after the shock in the AGS-R1 (90%), whereas after 27 days in the FAS-R1 (82%). The loss in nitritation efficiency was higher in the FAS reactors and was proportional to the shock intensity. Nitritati…

0208 environmental biotechnology02 engineering and technology010501 environmental sciencesSalinity shockFish-canning wastewater01 natural sciencesAnimal scienceShortcut nitrification/denitrificationmedicineHalophilic bacteriaSafety Risk Reliability and QualityAmmonium oxidationWaste Management and Disposal0105 earth and related environmental sciencesSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleChemistryProcess Chemistry and TechnologyFASHalophile020801 environmental engineeringSalinityActivated sludgeAerobic granular sludgeShock (circulatory)Steady state (chemistry)medicine.symptomShock intensityBiotechnologyJournal of Water Process Engineering
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Effect of long-term salinity increase on nitritation and denitritation kinetics in activated sludge and granular sludge reactors

2017

The aim of this work was to investigate the effects of moderate and drastic long-termincrease of salinity.Particularly, the study was aimed at assessing the shock effecton nitritationand denitritation kineticsof halophilic biomass inboth forms:flocculent activated sludge and granular sludge.

halophilic biomass industrial wastewater salinity shocks sequencing batch reactorsSettore ICAR/03 - Ingegneria Sanitaria-Ambientale
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