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Phosphorus removal in a vertical upflow constructed wetland system
2003 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 48, no 5, 43-50 p.Conference paper, Published paper (Refereed)
Abstract [en]

Mechanisms for P removal in a vertical upflow macrophyte system were studied in controlled laboratory columns filled with sand and planted with Phragmites australis. Substrate P removal was shown to increase with flow rate, a parameter which can be enhanced through effluent recirculation. An alternative substrate (leca, light expanded clay aggregate) provided improved equilibrium adsorption characteristics, but uncrushed and within the kinetic constraints of a macrophyte system gave no improvement for P adsorption over sand. Intermittent loading of the sand based macrophyte system permitted control of the P concentration, with lower effluent peak concentrations for increased resting interval (no P inflow). Where P loading was targeted, continuous flow provided the optimum mass removal conditions.

Place, publisher, year, edition, pages
2003. Vol. 48, no 5, 43-50 p.
Keyword [en]
effluent recirculation, intermittent loading, phosphorus adsorption, plant uptake, vertical flow, wetland system, macrophyte system, water
Identifiers
URN: urn:nbn:se:kth:diva-22993ISI: 000186849300007OAI: oai:DiVA.org:kth-22993DiVA: diva2:341691
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Farahbakhshazad, Neda
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