English resumePilot study on advances phosphorus removal from WWTP effluent using Biophree® technology
This report contains the results of a pilot at the Dronten WWTP in which BiOPhree® technology was tested on a pilot scale. This is a phosphate removal technique that makes a P content of 0.1 mg P/l achievable. According to the authors of the report, the superior effluent quality at low costs and chemical use, combined with phosphate recovery, makes BiOPhree an attractive post-treatment technique for WWTPs subject to strict phosphate requirements under the Water Framework Directive.
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Publicatienummer |
2026-14 |
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Thema |
Waterkwaliteit, Realiseren van ecologische waterkwaliteitsdoelen (KRW) |
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Datum |
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Despite an average phosphorus removal efficiency of nearly 90% at Dutch wastewater treatment plants, the surface water in many water bodies still does not meet the requirements of the European Water Framework Directive. Phosphorus concentrations are frequently too high, and further phosphorus removal from wastewater will contribute to improved water quality.
The conventional solution for advanced phosphorus removal is the use of a posttreatment sand or cloth media filter combined with coagulant (iron chloride) dosing, which can achieve approximately 0.25 mg P/L. In this STOWA project, the BiOPhree® technology was tested at pilot scale — a phosphorus removal technology capable of achieving a phosphorus concentration of 0.1 mg P/L. According tot he authors of this report, The positive pilot results provide sufficient confidence to demonstrate the technology at full scale. Several Water Authorities are currently considering a demonstration project using this technology.
This report is the English translation of STOWA 2025-28 ‘Pilotonderzoek vergaande fosfaatverwijdering uit rwzi-effluent met de BiOPhree®-technologie’