Tertiary nutrient removal from wastewater by immobilised microalgae: impact of wastewater nutrient characteristics and hydraulic retention time (HRT)
| Autor: | Marc Pidou, Rita K. Henderson, M. Santinelli, Peter Jarvis, Felicity A. Roddick, Bruce Jefferson, Rachel Whitton, Francesco Ometto, Raffaella Villa |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Hydraulic retention time immobilised microalgae hydraulic retention time 010501 environmental sciences Management Monitoring Policy and Law Environmental Science (miscellaneous) Pulp and paper industry 01 natural sciences wastewater 03 medical and health sciences 030104 developmental biology Nutrient Wastewater Vattenbehandling Water Treatment Environmental science 0105 earth and related environmental sciences Water Science and Technology |
| Popis: | Immobilising microalgal cells has been proposed as a process solution to overcome the barriers associated with the implementation of microalgae for wastewater remediation. This work evaluated the performance and remediation mechanisms of immobilised microalgae for continuous wastewater treatment under varying hydraulic retention times (HRT). Three domestic secondary wastewaters with differing concentrations of orthophosphate (PO4-P), ammonium (NH4-N) and nitrate (NO3-N) were treated by Scenedesmus obliquus immobilised within 2% calcium alginate. Trials were run in continuous operation at HRTs of 3, 6, 12 and 20 h. Removal rates for PO4-P improved with increasing HRT, with minimum residual concentrations of 0.3-3.1 mg center dot L-1 observed at 3 h and 0.01-0.2 mg center dot L-1 at 20 h. Ammonium remediation was not linked to HRT or NH4+ concentration with minimum residual concentrations of Funding Agencies|Engineering and Physical Sciences Research Council (EPSRC) of the STREAM Industrial Doctorate Centre; Anglian Water; Severn Trent Water; Scottish Water |
| Databáze: | OpenAIRE |
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