Wintgens, Thomas

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Thomas
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Wintgens, Thomas

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2015 - 20172
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Dateien dazu vorhanden?: Nein × Thema: Phosphorus recovery ×

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  • Vorschaubild nicht verfügbar
    Publikation
    Phosphorus recovery potential in Sofia WWTP in view of the national sludge management strategy
    (Elsevier, 01/2017) Ribarova, Irina; Dimitrova, Sonja; Lambeva, Ralitsa; Wintgens, Thomas; Stemann, Jan; Remmen, Kirsten [in: Resources, Conservation and Recycling]
    In view of the vital importance of phosphorus and its increasing scarcity as a natural resource, phosphorus recovery has recently gained significant scientific and technical interest. The aim of this study is to support the implementation of the Bulgarian national sludge management strategy, particularly its objective to achieve more efficient resource management of phosphorus in waste water treatment plants (WWTPs). The study estimates the potential for phosphorus recovery from the municipal WWTP at Sofia, the largest in Bulgaria, serving some 14% of the Bulgarian population. The phosphorus content of five process streams (thickener supernatant, dewatering centrate, sludge before digestion, sludge after digestion and ash) is analysed on the basis of one year of measurements. It is estimated that 170–250 t phosphorus could be recovered annually from the WWTP from digested sludge or ash, depending on the phosphorus recovery technology used.
    01A - Beitrag in wissenschaftlicher Zeitschrift
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    Publikation
    Phosphorus recovery from sewage sludge by nanofiltration in diafiltration mode
    (Elsevier, 04/2015) Schütte, Thérèse; Niewersch, Claudia; Wintgens, Thomas; Yüce, Süleyman [in: Journal of Membrane Science]
    Phosphorus containing mineral fertilizers are frequently used in agriculture. The global resources of phosphorus rock are limited, which makes the use of alternative phosphorus sources increasingly promising. In this work, a process for phosphorus recovery from sewage sludge was studied. The focus lies on a nanofiltration process for the removal of metals and heavy metals from the product stream. In all cases, it was shown that metals were almost entirely retained by the membrane, while phosphorus permeated to a high degree. The phosphorus yield could be improved significantly by approaching diafiltration conditions.
    01A - Beitrag in wissenschaftlicher Zeitschrift