Removal of phosphate from municipal sewage by high gradient magnetic separation

被引：0

作者：

Zi-li Huang

Yue-hua Hu

Jing Xu

Chun-hua Zheng

机构：

[1] Central South University,School of Resources Processing and Bioengineering

[2] Wuhan University of Science and Technology,College of Chemical Engineering, Resources and Environment

来源：

Journal of Central South University of Technology | 2004年 / 11卷

关键词：

removal; phosphate; municipal sewage; high gradient magnetic separation; X 703. 1;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The removal of phosphate from municipal sewage by high gradient magnetic separation using aluminium sulphate as precipitating agent and Fe3O4 as seeding material was studied. The effects of aluminium sulphate, Fe3O4, magnetic field intensity, pH value and flow-rate of sewage on phosphorus removal rate were investigated. The results show that addition of 200 mg/L Al2(SO4)3 · 18H2O and 300 mg/L Fe3O4, magnetic field intensity of 200 kA/m, pH value of 4.5 – 7.0 and flow-rate of 6.15 cm/s are both efficient and economic technical parameters for removal of phosphate. The pH value has a tremendous effect on the removal of phosphate. In the pH range of 4.5–7.0, more than 95% phosphate can be removed. Theoretical analysis indicates that the solubility of AIPO4 is minimum at pH 4.0 – 7.0 and the electrostatic attractive force between AIPO4 and Fe3O4 is maximum at pH 4.5 – 6.5.

引用

页码：391 / 394

页数：3

共 28 条

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