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首页> 外文学位 >Ferrate as a new treatment chemical for removal of effluent organic matter (EFOM) and emerging micro-pollutants in treated municipal wastewater for water reuse.
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Ferrate as a new treatment chemical for removal of effluent organic matter (EFOM) and emerging micro-pollutants in treated municipal wastewater for water reuse.

机译：高铁酸盐作为一种新的处理化学品，用于去除经过处理的市政废水中的废水有机物（EFOM）和新兴的微量污染物，以用于水的再利用。

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摘要

Rapidly expanding population, escalating water consumption, and dwindling water resources make water shortage a crisis on a global level, particularly in arid and semi-arid areas or where water sources are highly contaminated. Water reuse, accomplished by a variety of water reclamation technologies, is a strategically sound approach to this crisis. In practice, secondary effluent that is the treated wastewater discharged from municipal wastewater treatment plants (WWTPs) is a preferred reclaimed water source due to its high quality and stable quantity. However, various pollutants, effluent organic matters (EfOM) and emerging contaminants in particular, are still present in secondary effluent. They should be effectively removed before the reclaimed water is safely used.;In this dissertation study, ferrate (Fe(VI)) is proposed as a new treatment agent for treatment of secondary effluent, with an emphasis of removing EfOM and emerging contaminants. Fe(VI) is an environmentally friendly treatment agent with multiple treatment mechanisms including oxidation, coagulation, adsorption, precipitation and disinfection. Bench-scale studies were performed to investigate ferrate(VI) treatment of secondary effluent for the purpose of water reclamation. Special attention was paid to EfOM and a model emerging contaminant, i.e. mefenamic acid (MEF), which represent two challenging traditional and emerging contaminants in secondary effluent, respectively. Initial efforts were made to preliminarily evaluate the treatment performance of ferrate(VI) for the removal of different secondary effluent contaminants under different operating conditions. Thereafter, ferrate(VI) reactions with EfOM and MEF were mechanistically investigated. All the aforementioned experiments were carried out in a batch mode. Afterwards, the treatment performance of ferrate(VI) treatment of secondary effluent was studied in a continuous-flow reactor, which is more commonly selected in engineering practices. Besides removal of the common wastewater contaminant, focus would be specially on coagulative behaviors of ferrate(VI) resultant particles, which could not be studied in a batch mode due to a different hydraulic flow state. Moreover, preliminary cost analysis was made to compare ferrate(VI) treatment and ozonation (a common chemical oxidation option in water reuse) for water reclamation. Finally, implications of ferrate(VI) for environmental management were discussed and future research suggestion was identified.
机译：人口的迅速增长，用水量的增加以及水资源的减少，使缺水成为全球性的危机，特别是在干旱和半干旱地区或水源高度污染的地区。通过多种水回收技术实现的水再利用是解决这一危机的战略上合理的方法。在实践中，二次废水是从市政废水处理厂（WWTP）排放的经过处理的废水，由于其高质量和稳定的数量，因此是首选的再生水源。但是，次要废水中仍然存在各种污染物，特别是废水有机物（EfOM），尤其是新出现的污染物。在安全使用再生水之前，应将其有效去除。;在本论文研究中，提出了高铁酸盐（Fe（VI））作为处理二次废水的新处理剂，重点是去除EfOM和新出现的污染物。 Fe（VI）是一种环境友好的处理剂，具有多种处理机制，包括氧化，凝聚，吸附，沉淀和消毒。进行了基准规模研究，以研究高铁酸盐（VI）处理二次废水以实现水再生的目的。特别关注了EfOM和一种新出现的污染物模型，即甲芬那酸（MEF），它们分别代表了二级排放物中的两种具有挑战性的传统污染物和新兴污染物。进行了初步的努力，以初步评估高铁酸盐（VI）在不同操作条件下去除不同二级污水污染物的处理性能。此后，对EfOM和MEF的高铁酸盐（VI）反应进行了机理研究。所有上述实验均以间歇模式进行。之后，在连续流反应器中研究了高铁酸盐（VI）处理二次废水的处理性能，该工艺在工程实践中更常用。除了去除常见的废水污染物外，还将特别关注高铁酸盐（VI）生成的颗粒的凝结行为，由于水力流动状态不同，因此无法以批处理模式进行研究。此外，进行了初步成本分析，以比较高铁酸盐（VI）处理和臭氧化（水回用中常见的化学氧化方法）进行水回收。最后，讨论了高铁酸盐（VI）对环境管理的影响，并确定了未来的研究建议。

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  • 作者

    Li, Nanzhu.;

  • 作者单位

    Montclair State University.;

  • 授予单位 Montclair State University.;
  • 学科 Environmental science.;Environmental management.
  • 学位 Ph.D.
  • 年度 2017
  • 页码 170 p.
  • 总页数 170
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

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