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Phosphorus recovery from wastewater through microbial processes.
Yuan, Zhiguo; Pratt, Steven; Batstone, Damien J.
Afiliação
  • Yuan Z; Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Australia. z.yuan@awmc.uq.edu.au
Curr Opin Biotechnol ; 23(6): 878-83, 2012 Dec.
Article em En | MEDLINE | ID: mdl-22922003
ABSTRACT
Waste streams offer a compelling opportunity to recover phosphorus (P). 15-20% of world demand for phosphate rock could theoretically be satisfied by recovering phosphorus from domestic waste streams alone. For very dilute streams (<10 mg PL(-1)), including domestic wastewater, it is necessary to concentrate phosphorus in order to make recovery and reuse feasible. This review discusses enhanced biological phosphorus removal (EBPR) as a key technology to achieve this. EBPR relies on polyphosphate accumulating organisms (PAOs) to take up phosphorus from waste streams, so concentrating phosphorus in biomass. The P-rich biosolids can be either directly applied to land, or solubilized and phosphorus recovered as a mineral product. Direct application is effective, but the product is bulky and carries contaminant risks that need to be managed. Phosphorus release can be achieved using either thermochemical or biochemical methods, while recovery is generally by precipitation as struvite. We conclude that while EBPR technology is mature, the subsequent phosphorus release and recovery technologies need additional development.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Técnicas Microbiológicas / Purificação da Água / Águas Residuárias Idioma: En Revista: Curr Opin Biotechnol Ano de publicação: 2012 Tipo de documento: Article País de afiliação: Austrália

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Técnicas Microbiológicas / Purificação da Água / Águas Residuárias Idioma: En Revista: Curr Opin Biotechnol Ano de publicação: 2012 Tipo de documento: Article País de afiliação: Austrália