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Sustainable Dewatering of Industrial Sludges in Sludge Treatment Reed Beds: Experiences from Pilot and Full-Scale Studies under Different Climates

Steen Nielsen, Alexandros I. Stefanakis
Published: 23 October 2020
 by  MDPI
Applied Sciences , Volume 10; doi:10.3390/app10217446

Abstract: Sludge treatment reed beds (STRBs) are an established sludge treatment technology with multiple environmental and economic advantages in dewatering sludge generated during domestic wastewater treatment. However, little is reported regarding their appropriateness and efficiency for the treatment of sludge produced during industrial wastewater treatment and from water works. These sludge types may have significantly different quality characteristics than typical domestic sludge and may contain constituents that could affect their dewaterability. Therefore, the dewatering of these industrial sludge types is usually tested in small-scale pilot STRBs before the construction of full-scale systems. This paper presents and summarizes the state-of-the-art experience from existing pilot and full-scale STRB systems from various countries and climates treating sludge from various industrial sources, evaluates the suitability and the advantages of this sustainable treatment technology, and proposes the required dimensioning for efficient full-scale STRB operation and performance.
Keywords: Heavy metals / stability / reuse / Nature-based Solutions / Sludge Dewatering / Ferric Sludge / Water Works / Hazardous Organic Compounds / Sludge Treatment Wetland / Sludge Treatment Reed Bed

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