Sludge treatment: Current research trends
Journal
Bioresource Technology
Journal Volume
243
Pages
1159-1172
Date Issued
2017
Author(s)
Abstract
Sludge is produced during wastewater treatment as a residue containing most insoluble and adsorbed soluble impurities in wastewaters. This paper summarized the currently available review papers on sludge treatments and proposed the research trends based on the points raised therein. On partition aspect, sludge production rate and the reduction of production rate and the fate and transformation of involved emergent contaminants including endocrine disrupting chemicals and pharmaceuticals and personal care products are widely studied. On release aspect, development of thermal processes on sludge with migration and transformation of heavy metals in sludge during treatment is a research focus. The use of detailed fluid and biological reaction models and advanced instrumentation and control systems is studied to optimize treatment performances. On recovery part, co-digestion of sludge with co-substrates at mesophilic and hyperthermophilic conditions and the recovery of phosphorus at low costs are research highlights. ? 2017 Elsevier Ltd
Subjects
Co-digestion
Contaminants
Phosphorus
Production
Recovery
Sludge
Thermal treatment
Description
Article type: review
Type
review