Modelling of phosphorus removal from aqueous and wastewater samples using ferric iron

被引：191

作者：

Fytianos, K ^{[1
]}

Voudrias, E

Raikos, N

机构：

[1] Univ Thessaloniki, Dept Chem, Environm Pollut Control Lab, GR-54006 Thessalonica, Greece

[2] Democritus Univ Thrace, Dept Environm Engn, GR-67100 Xanthi, Greece

来源：

ENVIRONMENTAL POLLUTION | 1998年 / 101卷 / 01期

关键词：

phosphorus removal; iron addition; mathematical modelling; municipal wastewater;

D O I：

10.1016/S0269-7491(98)00007-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Batch laboratory scale experiments were conducted to investigate the removal of phosphate from aqueous and municipal wastewater samples by addition of FeCl3. 6H(2)O. The effect of pH, Fe-dose and initial phosphate concentration were assessed. Optimum phosphate removal, 63% for 1:1 molar addition of Fe(III) was observed at pH 4.5. However, a 155% excess of Fe-dose was necessary for complete phosphorus removal. Phosphorus removal from municipal wastewater was slightly higher than that observed for the aqueous solutions. A chemical precipitation mathematical model was developed and tested with the available experimental data. The model included a total of 15 chemical reactions and 4 solid phases with the option of single-phase precipitation or two-phase co-precipitation. The resulting system of non-linear algebraic equations was solved numerically, using the Wijngaarden-Dekker-Brent method. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：123 / 130

页数：8

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