Membrane crystallization for phosphorus recovery and ammonia stripping from reject water from sludge dewatering process

被引：47

作者：

Quist-Jensen, C. A. ^{[1
]}

Sorensen, J. M. ^{[1
]}

Svenstrup, A. ^{[1
]}

Scarpa, L. ^{[1
]}

Carlsen, T. S. ^{[1
]}

Jensen, H. C. ^{[1
]}

Wybrandt, L. ^{[1
]}

Christensen, M. L. ^{[1
]}

机构：

[1] Aalborg Univ, Dept Chem & Biosci, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark

来源：

DESALINATION | 2018年 / 440卷

关键词：

Membrane crystallization; Membrane distillation; Phosphorus; Struvite; Ammonia; MUNICIPAL WASTE-WATER; PROCESS INTENSIFICATION; RESOURCE RECOVERY; SODIUM-SULFATE; DISTILLATION; OSMOSIS; REMOVAL; INTEGRATION; STRUVITE; NITROGEN;

D O I：

10.1016/j.desal.2017.11.034

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Membrane crystallization (MCr) have been applied on real wastewater to study the potential of recovering phosphorus as struvite (MgNH4PO4 center dot H2O). The performance of MCr shows a stable flux at recovery factor of 70%. To facilitate struvite precipitation, magnesium has been added in the molar ratio of 1:1.3 of P:Mg. A recovery of 60% phosphorus have been obtained at pH of 8.3 and at recovery factor of 70%. Furthermore, the MCr process allows to produce an ammonia-rich stream on the permeate side, due to the hydrophobic nature of the membrane and the transport of volatile compounds through the membrane. This liquid stream can be considered to be used directly as a fertilizer product.

引用

页码：156 / 160

页数：5

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