Assessment of coagulation‐ultrafiltration performance for the treatment of primary wastewater using alum sludge

Mazari, Lilia; Abdessemed, D.; Szymczyk, Anthony; Trari, M.

doi:10.1111/wej.12359

Cited by 8 publications

(4 citation statements)

References 37 publications

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“…The sludge has also been used as a coagulant in wastewater treatment plants (WWTPs) [88][89][90]. WTS applied in the post-treatment of upflow anaerobic sludge blanket (UASB) reactor effluents provided high removal efficiencies in terms of biochemical oxygen demand (BOD) (78%), chemical oxygen demand (COD) (74%) and suspended solids (SS) (84%), suggesting that this application is a promising option [91].…”

Section: Water Treatmentmentioning

confidence: 99%

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Mattoso,

Cunha,

Aguiar

et al. 2024

Materials

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To address the growing global water demand, it is imperative to implement advanced treatment systems and sustainable alternatives for managing the large amount of waste generated during the water purification process, known as water treatment sludge (WTS). Worldwide, researchers and companies are exploring alternatives and methods for the valorization of WTS as a raw material in other processes. It is urgent that all productive sectors, which contribute significantly to greenhouse gas emissions, adopt this management principle to ensure more sustainable production, contributing to the global goal of climate neutrality. Notably, in civil construction, incorporating WTS as a supplementary cementitious material (SCM) shows great promise, considering that the industrial waste currently used for this purpose is increasingly restricted. The use of WTS as a raw material in the cement industry not only contributes to the reduction of the carbon footprint, but also reduces the high waste load still disposed of in landfills. The emerging applications for WTP sludge are reviewed, with emphasis on its valorization in the civil construction as an SCM. The main characteristics of this waste and their impacts on the environment are also addressed.

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Section: Water Treatmentmentioning

confidence: 99%

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Mattoso,

Cunha,

Aguiar

et al. 2024

Materials

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“…It has also been used as a special coagulating and flocculating agent for industrial effluent purification [32]. Hu et al [33] used liquid AlS as a coagulant for pesticide immobilization in wastewater, while Mazari et al [34] introduced liquid AlS into the pre-treatment process as the primary coagulant for the ultrafiltration (UF) membrane process of municipal wastewater treatment. Shrestha et al [35] also used waterworks AlS in pilot sewers for the first time to replace chemical coagulants.…”

Section: As Coagulant For Wastewater Treatmentmentioning

confidence: 99%

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Zhao

Xie

et al. 2021

Processes

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Alum sludge (AlS) refers to the inevitable by-product generated during the drinking water purification process, where Al-salt is used as a coagulant in the water industry. It has long been treated as “waste”, while landfill is its major final disposal destination. In fact, AlS is an underutilized material with huge potential for beneficial reuse as a raw material in various wastewater treatment processes. In the last two decades, intensive studies have been conducted worldwide to explore the “science” and practical application of AlS. This paper focuses on the recent developments in the use of AlS that show its strong potential for reuse in wastewater treatment processes. In particular, the review covers the key “science” of the nature and mechanisms of AlS, revealing why AlS has the potential to be a value-added material. In addition, the future focus of research towards the widespread application of AlS as a raw material/product in commercial markets is suggested, which expands the scope for AlS research and development.

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“…Hu et al [55] used liquid AlS as coagulant for pesticide immobilization in wastewater and found that the liquid AlS adsorbed P more rapidly than dewatered AlS cakes as well as having higher performance in comparison with other adsorbents. Mazari et al [56] introduced liquid AlS into the pre-treatment process as the primary coagulant for the ultrafiltration (UF) membrane process of municipal wastewater treatment. Shrestha et al [57] also used waterworks AlS in pilot sewers for the first time to replace the chemical coagulants.…”

Section: Wts Used As Substrate In Developing Constructed Wetland Treamentioning

confidence: 99%

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

Zhao

Nzihou

Ren

et al. 2020

Waste Biomass Valor

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Waterworks sludge refers to the inevitable suspended and dissolved solids produced during the water purification process when producing tap water where Al-salt and/or Fe-salt are used as coagulant worldwide. Waterworks sludge is dewatered and the resultant cakes have been treated as "waste" for landfill as their major final disposal solution for a long time in practice. As waterworks sludge is the residual of potable water treatment process, it is not harmful and without toxic elements such as heavy metals in most cases in comparison to sewage sludges for instance. Actually, waterworks sludge is an underrated material with huge potential for beneficial reuse as raw material in water and environmental engineering. However, little was significantly progressed on this topic until the last two decades. Research and development (R&D) with special interest and focus on waterworks sludge reuse was conducted in our group in the last 15 years and this paper reports and discusses the main work and its novel application profile. Overall, it is believed that the R&D of waterworks sludge is useful and will help to develop national strategy of the entire waterworks sludge management, allowing its transformation from a "waste" into value-added products, and thus contribute to sustainable development.

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Assessment of coagulation‐ultrafiltration performance for the treatment of primary wastewater using alum sludge

Cited by 8 publications

References 37 publications

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Application of Alum Sludge in Wastewater Treatment Processes: “Science” of Reuse and Reclamation Pathways

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

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