Effects of temperature, salinity, and carbon: nitrogen ratio on sequencing batch reactor treating shrimp aquaculture wastewater

Nitrification in fixed-bed reactors treating saline wastewater

“…With increasing temperature nitrification rates increase to an apparent maximum at 30-37.5°C whereas beyond 37.5°C the overall rates decrease (Fontenot et al 2007). …”

“…Conventional nitrogen removal processes for protein or ammonia containing saline wastewater are conducted by nitrification, followed by anoxic denitrification with addition of an external carbon source, e.g., in sequencing batch reactors (Fontenot et al 2007). …”

“…Nitrogen removal in real or artificial wastewater in the presence of 0-6% NaCl in lab-or full-scale sequencing batch reactor (SBR) systems has been investigated (Campos et al 2002, Fontenot et al 2007, Huilinir et al 2008). …”

“…With increasing salt concentrations up to 6% removal efficiencies decreased drastically in lab scale SBRs inoculated with salt-adapted, but non-34 | L i t e r a t u r e r e v i e w halophilic, microorganisms (Intrasungkha et al 1999, Uygur andKargi 2004), whereas the highest nitrifying activity of a halophilic bacterial population was obtained for an in situ NaCl concentration of 28 g L -1 (Fontenot et al 2007).…”

Efecto de cuatro pretratamientos en la digestion anaerobica y la remocion de nutrientes de efluentes, de un sistema de recirculacion acuicola

“…La temperatura también tuvo un papel importante en la tasa de desnitrificación en los reactores anaeróbicos, el cambio de temperatura de 10 a 35°C, incidió en un aumento de la tasa de desnitrificación, de 1,5 a 3 veces (Dawson & Murphy, 1972;Bailey & Beauchamp, 1973;Stanford et al, 1975). Estos resultados coinciden con los reportado por Fontenot et al (2007) quienes observaron tasas de remoción de 100% del NO3-N cuando la temperatura del efluente fue de 22ºC.…”