Refixation of phosphates released during bio-P sludge handling as struvite or aluminium phosphate

被引：14

作者：

Jardin, N ^{[1
]}

Pöpel, HJ ^{[1
]}

机构：

[1] Ruhrverband, D-45128 Essen, Germany

来源：

ENVIRONMENTAL TECHNOLOGY | 2001年 / 22卷 / 11期

关键词：

enhanced biological phosphorus removal; sludge treatment; polyphosphate; struvite;

D O I：

10.1080/09593332208618193

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Phosphate release and phosphate fixation during sludge treatment of waste activated sludge was investigated with a pilot plant for enhanced biological phosphorus removal, complemented by laboratory investigations of sludge samples from different large enhanced biological phosphorus removal plants. The major part of the eliminated phosphorus in the pilot plant was due to the storage of polyphosphate in the waste activated sludge and was accompanied by an uptake of magnesium and potassium. Stabilising waste activated sludge from the enhanced biological phosphorus removal pilot plant results in a hydrolysis of polyphosphate. As a result of polyphosphate hydrolysis in stabilising systems, phosphate, magnesium and potassium are released, but only potassium remains in solution whereas magnesium and a part of the released phosphate was precipitated as struvite. Another large fraction of the released phosphate was fixed by participation of aluminium.

引用

页码：1253 / 1262

页数：10

共 17 条

[1] EXCHANGE OF ORGANICS, PHOSPHATE AND CATIONS BETWEEN SLUDGE AND WATER IN BIOLOGICAL PHOSPHORUS AND NITROGEN REMOVAL PROCESSES [J].