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Zero Fenton sludge discharge: a review on reuse approach during wastewater treatment by the advanced oxidation process
International Journal of Environmental Science and Technology ( IF 3.1 ) Pub Date : 2021-01-13 , DOI: 10.1007/s13762-020-03121-0
Mohd Salim Mahtab , Izharul Haq Farooqi , Anwar Khursheed

Abstract

The substantial growth of industrial development and challenging regulations associated with environmental protection demands new and advanced technologies for the effective treatment of the effluents. The applications of the classical Fenton process are versatile and effective particularly for the treatment of recalcitrant compounds among advanced oxidation processes. However, the classical Fenton process possesses some shortcomings like the requirement of a narrow pH range, production of a high amount of iron sludge, and high chemical involvement. These drawbacks are the environmental barriers that restricted its widespread application. Several modifications have been adopted by many researchers as possible solutions to overcome these restrictions. Although several types of research and reviews have been reported in the literature on Fenton’s types and applications, nevertheless, a review with emphasis on the restrictions of the Fenton process and their possible solutions is lacking. The present review delineates the restrictions of the classical Fenton process and recent approaches to overcome these limitations with a special focus on Fenton sludge reuse systems as a sustainable approach. The Fenton sludge reuse systems for various wastewater treatment are also highlighted. The sludge reuse systems without regeneration, with optimized addition of reagents dosage, are the most effective method for treatment. To the best of our knowledge, this is the first review article focusing Fenton sludge reuse system for wastewater treatment. The review also addresses the possible areas for future research as reported in the literature, to make the process cost-effective, environmentally friendly, and its feasibility for large-scale applications.

Graphical abstract



中文翻译:

芬顿污泥为零排放:高级氧化工艺在废水处理过程中的再利用方法综述

摘要

工业发展的迅猛发展和与环境保护相关的具有挑战性的法规要求对污水进行有效处理的新的和先进的技术。经典的Fenton工艺的应用广泛且有效,特别是对于高级氧化工艺中难处理的化合物的处理。然而,经典的芬顿法具有一些缺点,例如要求pH值范围狭窄,产生大量的铁污泥以及化学物质含量高。这些缺点是限制其广泛应用的环境障碍。许多研究人员已经采用了几种修改方法来克服这些限制。尽管在文献中已经报道了有关Fenton类型和应用的几种类型的研究和评论,但是,仍然缺少强调Fenton过程的局限性及其可能解决方案的评论。本综述描述了经典的Fenton工艺的局限性以及克服这些局限性的最新方法,特别关注Fenton污泥再利用系统作为一种可持续的方法。还强调了用于各种废水处理的芬顿污泥再利用系统。最有效的处理方法是无需再生的污泥再利用系统,并优化了试剂用量。据我们所知,这是第一篇针对芬顿污泥再利用系统处理废水的综述文章。

图形概要

更新日期:2021-01-14
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