SciELO - Scientific Electronic Library Online

 
vol.35 número5Biological sulphate reduction with primary sewage sludge in an upflow anaerobic sludge bed (UASB) reactor -Part 4: Bed settling characteristicsEvaluation of modifications to a physicochemical method for determination of readily biodegradable COD índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google

Compartir


Water SA

versión On-line ISSN 1816-7950
versión impresa ISSN 0378-4738

Resumen

TODOROVA, Yovana; BELEV, Rumen; TOPALOVA, Yana  y  RIBAROVA, Irina. Analogous simulation of nutrient transformation processes in stream sediments. Water SA [online]. 2009, vol.35, n.5, pp.561-566. ISSN 1816-7950.

The main transformation processes effected by the natural microbial consortium of upper Iskar River with predominant participation of sediment biofilm were simulated in the laboratory by the use of portable devices (chambers). The dynamics of real heterotrophic respiration, organic matter oxidation, denitrification and ammonification were analysed by oxygen depletion, reduction of chemical oxygen demand, nitrate uptake and ammonium accumulation, under the conditions prevailing during high and low flow periods. The experimental results showed fast oxygen consumption and high process rates - indicators for intensive respiration by a heterotrophic microbial consortium and good functioning of the ecosystem component studied. The nitrogen transformations occurred at slower rates but in mutual dynamic balance and their simultaneous realisation was due to precise, adaptive division in time and space.

Palabras clave : respiration; COD-oxidation and nitrogen transformation (RONT) processes; analogous simulation; chambers; river sediments.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons