Phosphorus removal in a vertical upflow constructed wetland system
2003 (English)In: Water Science and Technology, ISSN 0273-1223, Vol. 48, no 5, 43-50 p.Conference paper (Refereed)
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.
effluent recirculation, intermittent loading, phosphorus adsorption, plant uptake, vertical flow, wetland system, macrophyte system, water
IdentifiersURN: urn:nbn:se:kth:diva-22993ISI: 000186849300007OAI: oai:DiVA.org:kth-22993DiVA: diva2:341691
QC 201005252010-08-102010-08-10Bibliographically approved