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dc.contributor.authorWang, Qilin
dc.contributor.authorWei, Wei
dc.contributor.authorGong, Yanyan
dc.contributor.authorYu, Qiming
dc.contributor.authorLi, Qin
dc.contributor.authorSun, Jing
dc.contributor.authorYuan, Zhiguo
dc.description.abstractThis review presents the state-of-the-art sludge reduction technologies applied in both wastewater and sludge treatment lines. They include chemical, mechanical, thermal, electrical treatment, addition of chemical un-coupler, and predation of protozoa/metazoa in wastewater treatment line, and physical, chemical and biological pretreatment in sludge treatment line. Emphasis was put on their effect on sludge reduction performance, with 10% sludge reduction to zero sludge production in wastewater treatment line and enhanced TS (total solids) or volatile solids removal of 5–40% in sludge treatment line. Free nitrous acid (FNA) technology seems good in wastewater treatment line but it is only under the lab-scale trial. In sludge treatment line, thermal, ultrasonic (< 4400 kJ/kg TS), FNA pretreatment and temperature-phased anaerobic digestion (TPAD) are promising if pathogen inactivation is not a concern. However, thermal pretreatment and TPAD are superior to other pretreatment technologies when pathogen inactivation is required. The new wastewater treatment processes including SANI®, high-rate activated sludge coupled autotrophic nitrogen removal and anaerobic membrane bioreactor coupled autotrophic nitrogen removal also have a great potential to reduce sludge production. In the future, an effort should be put on the effect of sludge reduction technologies on the removal of organic micropollutants and heavy metals.
dc.relation.ispartofjournalScience of the Total Environment
dc.subject.fieldofresearchEnvironmental Biotechnology not elsewhere classified
dc.titleTechnologies for reducing sludge production in wastewater treatment plants: State of the art
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Engineering
gro.hasfulltextNo Full Text
gro.griffith.authorYu, Jimmy J.
gro.griffith.authorLi, Qin
gro.griffith.authorWang, Qilin

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