Materials for phosphorous remediation: a review

Patyal, Vandana; Jaspal, Dipika; Khare, Kanchan

doi:10.1080/10426507.2021.1989683

Cited by 2 publications

(1 citation statement)

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“…The application of RFM in full-scale systems to trap P as well as the use of P-saturated media in agriculture is proven in research, e.g., [16]. Many granulated filter media have been suggested to be used for P removal in wastewater treatment [17]; however, only a few have achieved high Technology Readiness Level (TRL) and have become products on the market [18]. In stratified lakes with spring and autumn circulation, oxygen deficit can occur in the deeper parts during summer and winter.…”

Section: Introductionmentioning

confidence: 99%

Removal of Phosphorus from Hypolimnetic Lake Water by Reactive Filter Material in a Recirculating System—Laboratory Trial

Renman

2022

Water

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A toolbox of methods must be available for the remediation of lakes and water bodies suffering from eutrophication. One method suggested is hypolimnetic withdrawal based on a closed-circuit system. Prior to the start of a pilot-scale test at Lake Hönsan, Sweden, a laboratory trial with containers filled with water and bottom sediment from this lake was performed. A peristaltic pump distributed equal bottom water volume to four columns, two filled with glass beads and two with the filter material Polonite, and then back to the surface of the containers. The reactive filter medium (RFM) removed phosphate (PO4-P) efficiently (98.6%), despite the relatively low influent concentration (390 µg L−1). The control column filled with glass beads, removed 2.9% of the PO4-P. The anoxic sediment, containing 2.47 mg P g−1, released PO4-P, which was indicated by the increased concentration in near-bottom water. The redirected water after RFM filtration had high pH (x¯=11.1); however, an equalization took place in the water mass to a lower but still increased pH value (x¯=8.7) compared to the control (x¯=7.02). This article reports the pros and cons of a full-scale system using the proposed method.

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Section: Introductionmentioning

confidence: 99%