富铁污泥资源化利用综述：净化、上循环及其在污水处理中的应用

IF 4.3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Environmental Reviews Pub Date : 2022-07-19 DOI:10.1139/er-2021-0038

C. Yu, Liang Dongxu, Chen Hongyu, Zhu Suiyi, Wang Xianze, Yang Jiakuan, Xie Xinfeng, Joseph Eskola, Bian Dejun

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引用次数: 11

摘要

本文讨论了水处理、湿法冶金、表面处理和染料化学工业产生的富铁污泥的资源化利用。除了传统的污泥填埋处理外，这项工作还侧重于新商业产品的污泥净化，包括铁红/黑色染料、铁精矿粉末、聚铁絮凝剂、催化剂和磁性吸附剂。在这些纯化中，开发了一种新的策略来回收富含铁的污泥，以生产一种新型的含铁/硫絮凝剂。鉴于富含铁的污泥可能含有稀有和/或重金属，将污泥纯化为高纯度赤铁矿纳米颗粒和其他有价值的产品是一个新的见解。因此，深入考虑了含铁矿物的相变机制和有价值的铁氧化物的提纯机制。该工作总结了富铁污泥回收的中试和/或现场应用，并提出了开发一种新的Fe/S絮凝剂和高纯度赤铁矿产品的建议。

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Review of resource utilization of Fe-rich sludges: purification, upcycling, and application in wastewater treatment

This paper discusses the resource utilization of Fe-rich sludges generated as waste products from water treatment, hydrometallurgy, surface finishing, and dye chemical industries. Apart from the conventional landfill disposal of such sludges, the work focuses on sludge purification for new commercial products, including iron red/black dyes, an iron concentrate powder, a polyferric flocculant, a catalyst, and a magnetic adsorbent. Among such purifications, a new strategy was developed to recycle Fe-rich sludges for a new Fe/S-bearing flocculant. Given that Fe-rich sludges may contain rare and/or heavy metals, the purification of sludges as high-purity hematite nanoparticles and other valuable products is detailed as a new insight. Accordingly, the mechanisms for the phase transformation of Fe-bearing minerals and the purification of valuable Fe oxides are deeply considered. The work summarizes the pilot- and/or field-scale application for recycling of Fe-rich sludge and proposes the development of a new Fe/S flocculant and a high-purity hematite product.

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来源期刊

Environmental Reviews 环境科学-环境科学

自引率

3.50%

发文量

期刊介绍： Published since 1993, Environmental Reviews is a quarterly journal that presents authoritative literature reviews on a wide range of environmental science and associated environmental studies topics, with emphasis on the effects on and response of both natural and manmade ecosystems to anthropogenic stress. The authorship and scope are international, with critical literature reviews submitted and invited on such topics as sustainability, water supply management, climate change, harvesting impacts, acid rain, pesticide use, lake acidification, air and marine pollution, oil and gas development, biological control, food chain biomagnification, rehabilitation of polluted aquatic systems, erosion, forestry, bio-indicators of environmental stress, conservation of biodiversity, and many other environmental issues.