Opportunities and challenges in sustainable treatment and resource reuse of sewage sludge: A review

Raheem, Abdul and Sikarwar, Vineet Singh and He, Jun and Dastyar, Wafa and Dionysiou, Dionysios D. and Wang, Wei and Zhao, Ming (2018) Opportunities and challenges in sustainable treatment and resource reuse of sewage sludge: A review. Chemical Engineering Journal, 337 . pp. 616-641. ISSN 1385-8947

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Abstract

Sludge or waste activated sludge (WAS) generated from wastewater treatment plants may be considered a nuisance. It is a key source for secondary environmental contamination on account of the presence of diverse pollutants (polycyclic aromatic hydrocarbons, dioxins, furans, heavy metals, etc.). Innovative and cost-effective sludge treatment pathways are a prerequisite for the safe and environment-friendly disposal of WAS. This article delivers an assessment of the leading disposal (volume reduction) and energy recovery routes such as anaerobic digestion, incineration, pyrolysis, gasification and enhanced digestion using microbial fuel cell along with their comparative evaluation, to measure their suitability for different sludge compositions and resources availability. Furthermore, the authors shed light on the bio-refinery and resource recovery approaches to extract value added products and nutrients from WAS, and control options for metal elements and micro-pollutants in sewage sludge. Recovery of enzymes, bio-plastics, bio-pesticides, proteins and phosphorus are discussed as a means to visualize sludge as a potential opportunity instead of a nuisance.

Item Type: Article
Keywords: Waste activated sludge; Thermochemical treatment; Bio-energy; Resources recovery; Sustainable management
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Chemical and Environmental Engineering
Identification Number: https://doi.org/10.1016/j.cej.2017.12.149
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Depositing User: Yu, Tiffany
Date Deposited: 24 Jan 2019 06:27
Last Modified: 30 Dec 2019 04:33
URI: http://eprints.nottingham.ac.uk/id/eprint/55936

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