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An economic evaluation of phosphorus recovery as struvite from digester [An article from: Bioresource Technology]
Description
This digital document is a journal article from Bioresource Technology, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Phosphorus can be recovered from wastewater through crystallisation of struvite, MgNH"4PO"4.6H"2O. Approximately 1kg of struvite can be crystallised from 100m^3 of wastewater. Crystallisation is profitable compared to chemical and biological removal of phosphorus due to savings from the reduction in (i) chemicals used for precipitation and sludge disposal; and (ii) downtime for cleaning unwanted struvite formed during chemical and biological removal. The struvite produced annually from a wastewater treatment plant that processed 100m^3/d, would be sufficient to apply on 2.6ha of arable land, as fertilizer. If struvite were to be recovered from wastewater treatment plants worldwide, 0.63milliontons of phosphorus (as P"2O"5) could be harvested annually, reducing phosphate rock mining by 1.6%. Therefore, this technology could provide opportunities to recover phosphorus sustainably from waste streams and preserve phosphorus reserves.
Description:
Phosphorus can be recovered from wastewater through crystallisation of struvite, MgNH"4PO"4.6H"2O. Approximately 1kg of struvite can be crystallised from 100m^3 of wastewater. Crystallisation is profitable compared to chemical and biological removal of phosphorus due to savings from the reduction in (i) chemicals used for precipitation and sludge disposal; and (ii) downtime for cleaning unwanted struvite formed during chemical and biological removal. The struvite produced annually from a wastewater treatment plant that processed 100m^3/d, would be sufficient to apply on 2.6ha of arable land, as fertilizer. If struvite were to be recovered from wastewater treatment plants worldwide, 0.63milliontons of phosphorus (as P"2O"5) could be harvested annually, reducing phosphate rock mining by 1.6%. Therefore, this technology could provide opportunities to recover phosphorus sustainably from waste streams and preserve phosphorus reserves.
