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Biological and physico-chemical removal of iron from potable waters: Redox potential as an indicator of treatment effectiveness.

机译：从饮用水中生物和物理化学去除铁：氧化还原电位可作为治疗效果的指标。

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摘要

The first objective of this research was to evaluate oxidation-reduction potential (ORP) as an indicator of effective iron removal in a biological process and to determine its relationship to dissolved oxygen (DO) and residual iron in the filtered water. Biological removal of iron to produce drinking water was established on one full-scale and two pilot-scale plants at two sites in France. Results show that below a minimum DO concentration of approximately 0.3 mg/L, residual iron concentration was related to ORP in the filtered water. Above the minimum DO requirement, ORP on the order of approximately 500 mV consistently reflected effective iron treatment and residual iron concentrations less than the French norm for potable water of 0.2 mg/L.;Secondly, two catalytic materials of filtration known as Ferrolite MC2 and Purolite were investigated on pilot-scale for their capacity to oxidize iron and manganese. Results showed that both materials eliminated dissolved iron to below detection levels regardless of DO or filtration rates up to 15 m/h (Ferrolite MC2) and 20 m/h (Purolite). During the trial period where no filter regeneration was carried out, the elimination of dissolved iron and dissolved manganese, respectively, were 100% and 77% for Purolite and 100% and 65% for Ferrolite MC2 for a raw water with 3.47 mg/L of dissolved iron and 0.317 of dissolved manganese. Purolite filtered a total volume of 1127 L or 137 L/kg of catalytic material and Ferrolite MC2 filtered a total of 1457 L or 217 L/kg.
机译：这项研究的第一个目标是评估氧化还原电位（ORP）作为生物过程中有效铁去除的指标，并确定其与过滤水中溶解氧（DO）和残留铁的关系。在法国两个地点的一个大型工厂和两个中试工厂建立了生物除铁以生产饮用水的方法。结果表明，最低溶解氧浓度低于约0.3 mg / L时，残留铁浓度与过滤水中的ORP有关。高于最低溶解氧要求，约500 mV的ORP始终反映出有效的铁处理和残留铁浓度低于0.2 mg / L饮用水的法国标准。第二，两种催化过滤材料称为Ferrolite MC2和以中试规模研究了堇青石氧化铁和锰的能力。结果表明，无论溶解氧或高达15 m / h（Ferrolite MC2）和20 m / h（Purolite）的过滤速率如何，两种材料都能将溶解的铁消除到检测水平以下。在不进行过滤器再生的试验期内，对于原水（含3.47 mg / L），Purolite的溶解铁和溶解锰的消除分别为100％和77％，Ferrolite MC2的消除率为100％和65％。溶解铁和0.317溶解锰。 Purolite过滤的催化物质总量为1127 L或137 L / kg，Ferrolite MC2过滤的总量为1457 L或217 L / kg。

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  • 作者

    Tremblay, Catherine Valerie Marguerite.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Engineering Sanitary and Municipal.
  • 学位 M.Eng.
  • 年度 1998
  • 页码 95 p.
  • 总页数 95
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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