An economic evaluation of phosphorus recovery as struvite from digester supernatant

被引：296

作者：

Shu, L.

Schneider, P.

Jegatheesan, V. ^{[1
]}

Johnson, J.

机构：

[1] James Cook Univ N Queensland, Sch Engn, Townsville, Qld 4811, Australia

[2] Great Barrier Reef Marine Pk Author, Townsville, Qld 4810, Australia

来源：

BIORESOURCE TECHNOLOGY | 2006年 / 97卷 / 17期

关键词：

crystallisation; phosphorus recovery; struvite; sustainability; wastewater treatment plant;

D O I：

10.1016/j.biortech.2005.11.005

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Phosphorus can be recovered from wastewater through crystallisation of struvite, MgNH4PO4 (.) 6HO. Approximately 1 kg of struvite can be crystallised from 100 m(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 100 m(3)/d, would be sufficient to apply on 2.6 ha of arable land, as fertilizer. If struvite were to be recovered from wastewater treatment plants worldwide, 0.63 million tons of phosphorus (as P2O5) 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. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2211 / 2216

页数：6

共 45 条

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