Technology for P recovery as struvite starting from wastewater sewage with "PHORWater" controlled biological processes and struvite scaling process (ID:207)

Input material
Wastewater sewage
Output product
Struvite
Processing capacity
20m3/d (recovery of 10 kg/d)
Technology Status
Prior to market introduction
Keywords
struvite
WWTP
raw material
nutrients recovery
fertilizers
Technology description

Several technologies are available for P-recovery at Waste Water Treatment Plants (WWTPs), but none before the anaerobic digestion, thinking about the WWTP as a whole, with biological processes and scaling problems. By controlling biological processes and struvite scaling we increase the phosphorus recovery rate and we avoid operational problems.

The innovation of PHORWater is that faces the problem from less to more. Moving from the optimization of the integral management to increase phosphorus availability and decrease uncontrolled precipitation of phosphorus, to a new simple-operational P-recovery reactor.

The obtained struvite (NH4MgPO4·6H2O; 29% P2O5, 15% MgO, 5% N) is a potentially marketable product for the P fertilizer industry. Its genuine slow release property avoids burning of plant roots, even when applied in excess quantities. Insoluble nature of struvite in neutral water prevents eutrophication and restricts leaching into groundwater. Regarding to impurities, the phosphorus obtained as struvite from recycling processes in WWTPs has less metal content than that of the phosphate rock, very low organic matter and less micropollutants content than an anaerobic sludge.

Linked ProductStruvite from wastewater by "PHORWater" process, ID:208

Basic information

Vendor:
  • Name: Depuración de Aguas del Mediterráneo (DAM)
  • Contact: Laura Pastor
  • Vendor website
    Country:
    Spain
    Technology main category:
    Phosphorus precipitation from liquid manure, waste water and drain water
    Technology subcategory:
    Phosphorus precipitation from wastewater/sludge

    Languages

    Summary:

    Technologie zur P-Rückgewinnung als Struvit ausgehend von Abwasser mit “PHORWater“ -gesteuerten biologischen Prozessen und Struvit-Skalierungsprozess

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    Summary:

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    Tecnologia per il recupero di P come struvite a partire da acque reflue mediante processi biologici controllati e di ridimensionamento della struvite “PHORWater”

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    Summary:

    Technologia odzyskiwania P jako struwitu, począwszy od ścieków z kontrolowanymi „PHORWater” procesami biologicznymi i procesem skalowania struwitu 

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    Szennyvízből történő struvit P extrakciós technológia, amely a "PHORWater” kontrollált biológiai folyamatokkal kerül előállításra

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