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Article

Modelling Phosphorus Sorption Kinetics and the Longevity of Reactive Filter Materials Used for On-Site Wastewater Treatment

Department of Sustainable Development, Environmental Science and Engineering, Division of Water and Environmental Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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Received: 19 March 2019 / Revised: 12 April 2019 / Accepted: 16 April 2019 / Published: 18 April 2019
(This article belongs to the Section Wastewater Treatment and Reuse)
Use of reactive filter media (RFM) is an emerging technology in small-scale wastewater treatment to improve phosphorus (P) removal and filter material longevity for making this technology sustainable. In this study, long-term sorption kinetics and the spatial dynamics of sorbed P distribution were simulated in replaceable P-filter bags filled with 700 L of reactive material and used in real on-site treatment systems. The input data for model calibration were obtained in laboratory trials with Filtralite P®, Polonite® and Top16. The P concentration breakthrough threshold value was set at an effluent/influent (C/C0) ratio of 1 and simulations were performed with P concentrations varying from 1 to 25 mg L−1. The simulation results showed that influent P concentration was important for the breakthrough and longevity, and that Polonite performed best, followed by Top16 and Filtralite P. A 100-day break in simulated intermittent flow allowed the materials to recover, which for Polonite involved slight retardation of P saturation. The simulated spatial distribution of P accumulated in the filter bags showed large differences between the filter materials. The modelling insights from this study can be applied in design and operation of on-site treatment systems using reactive filter materials. View Full-Text
Keywords: COMSOL modelling; phosphorus saturation; breakthrough; P-filter bags; solute transport COMSOL modelling; phosphorus saturation; breakthrough; P-filter bags; solute transport
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MDPI and ACS Style

Hamisi, R.; Renman, G.; Renman, A.; Wörman, A. Modelling Phosphorus Sorption Kinetics and the Longevity of Reactive Filter Materials Used for On-Site Wastewater Treatment. Water 2019, 11, 811. https://0-doi-org.brum.beds.ac.uk/10.3390/w11040811

AMA Style

Hamisi R, Renman G, Renman A, Wörman A. Modelling Phosphorus Sorption Kinetics and the Longevity of Reactive Filter Materials Used for On-Site Wastewater Treatment. Water. 2019; 11(4):811. https://0-doi-org.brum.beds.ac.uk/10.3390/w11040811

Chicago/Turabian Style

Hamisi, Rajabu, Gunno Renman, Agnieszka Renman, and Anders Wörman. 2019. "Modelling Phosphorus Sorption Kinetics and the Longevity of Reactive Filter Materials Used for On-Site Wastewater Treatment" Water 11, no. 4: 811. https://0-doi-org.brum.beds.ac.uk/10.3390/w11040811

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