Biological filtration for removal of arsenic from drinking water

被引：32

作者：

Pokhrel, Damodar ^{[2
]}

Viraraghavan, Thiruvenkatachari ^{[1
]}

机构：

[1] Univ Regina, Fac Engn, Regina, SK S4S 0A2, Canada

[2] Stantec Consulting Ltd, Regina, SK S4P 3P1, Canada

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2009年 / 90卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Slow sand filtration; Arsenic removal; Iron removal; Drinking water; CONTAMINATED GROUNDWATERS; INTELLECTUAL FUNCTION; AS(III) OXIDATION; TREATMENT PLANT; IRON REMOVAL; MANGANESE; BANGLADESH; EXPOSURE; BACTERIA; PRECIPITATION;

D O I：

10.1016/j.jenvman.2009.01.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The main objective of the study was to find a suitable iron to arsenic ratio in water to reduce arsenic to 5 mu g/L or lower through sand filtration. Experiments were conducted by varying the quantity of iron(II) while keeping the arsenic concentration at 100 mu g/L A mixture of iron (II) and arsenic at different ratios (10:1, 20:1. 30:1 and 40:1) was pumped to the sand filters in a down flow mode and effluent arsenic and iron were analyzed. It was found that a ratio of iron to arsenic of 40:1 was necessary to ensure an effluent arsenic concentration of 5 mu g/L or lower. Iron in the filtrate was found to be below 0.1 mg/L at all times. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1956 / 1961

页数：6

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