Electrodialytic recovery of phosphorus from chemically precipitated sewage sludge ashes

Raimon Parés Viader, Pernille Erland Jensen, Lisbeth M. Ottosen, Jesper Ahrenfeldt, Henrik Hauggaard-Nielsen

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Abstract

Phosphorus scarcity requires improved recover and reuse of urban sources; the recycling of this nutrient from sewage sludge has become increasingly important in the last years. Using an innovative electrodialytic process, the present study shows the potential for P separation from Fe and Al precipitated sewage sludge ash using this technique, with a recovery rate of around 70%. Furthermore, heavy metals were removed from the phosphorous fraction, producing a pure and safe phosphorus source in the end.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
Event1st IWA Resource Recovery Conference: Bridging towards the chemical industry - Ghent, Belgium
Duration: 30 Aug 20152 Sep 2015
Conference number: 1

Conference

Conference1st IWA Resource Recovery Conference
Number1
CountryBelgium
CityGhent
Period30/08/201502/09/2015

Keywords

  • Phosphorus
  • Electrodialysis
  • Sewage sludge ash

Cite this

Parés Viader, R., Jensen, P. E., Ottosen, L. M., Ahrenfeldt, J., & Hauggaard-Nielsen, H. (2016). Electrodialytic recovery of phosphorus from chemically precipitated sewage sludge ashes. Abstract from 1st IWA Resource Recovery Conference, Ghent, Belgium.