SciELO - Scientific Electronic Library Online

 
vol.41 número3Yield-reliability analysis and operating rules for run-of-river abstractions for typical rural water supply: Siloam Village case studyPerformance of regional flood frequency analysis methods in KwaZulu-Natal, South Africa 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

GRAU, Maximilian GP; RHOTON, Sara L; BROUCKAERT, Chris J  y  BUCKLEY, Chris A. Evaluation of an automated struvite reactor to recover phosphorus from source-separated urine collected at urine diversion toilets in eThekwini. Water SA [online]. 2015, vol.41, n.3, pp.383-389. ISSN 1816-7950.  http://dx.doi.org/10.4314/wsa.v41i3.10.

In the present study we attempted to develop a reactor system to recover phosphorus by struvite precipitation, and which can be installed anywhere in the field without access to a laboratory. A reactor was developed that can run fully automated and recover up to 93% of total phosphorus (total P). Turbidity and conductivity signals were investigated as automation proxies for magnesium dosage, thus making laboratory phosphate measurements to determine the exact magnesium dosage unnecessary. Conductivity is highly influenced by the dosing parameters (molarity and pump speed) and turbidity is affected by particle size distribution issues. Algorithms based on both conductivity and turbidity signals were not able to detect the precipitation endpoint in real time. However it proved possible to identify the endpoint retrospectively from the conductivity signal, and thereafter to dose an algorithm-calculated volume of urine to use up the excess magnesium dosed.

Palabras clave : struvite precipitation; human urine; turbidity; conductivity; automation; magnesium dose; VUNA.

        · texto en Inglés     · Inglés ( pdf )

 

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