Integrated iron(II) oxidation and limestone neutralisation of acid mine water

被引：0

作者：

Maree, JP ^{[1
]}

Strydom, WF ^{[1
]}

de Beer, M ^{[1
]}

机构：

[1] CSIR, Div Water Environm & Forestry Technol, ZA-0001 Pretoria, South Africa

来源：

WATER SCIENCE AND TECHNOLOGY | 1999年 / 39卷 / 10-11期

关键词：

acid mine water; iron(II) oxidation; limestone neutralisation; reaction kinetics; sulphate removal;

D O I：

10.2166/wst.1999.0662

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Volumetric iron(II) oxidation rates exceeding 100 g/(l.d) were achieved by dosing powdered limestone to a bio-reactor treating artificial acid mine water. Neutralisation and partial sulphate removal were achieved as well. The rate is highly dependent on the surface area exposed to the liquid (RSA) and the OH-, oxygen, CaCO3, suspended solids and iron(II) concentrations, and less dependent on specific surface area (SSA) and pressure in the pH range 5 to 6, The chemical oxidation rate (pH greater than 6) is dependent on the OH-, oxygen, and iron(II) concentrations and the reactor surface area (RSA). (C) 1999 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.

引用

页码：231 / 238

页数：8