Sustainable approaches for minimizing biosolids production and maximizing reuse options in sludge management: A review

Sung Hee Joo, Francesca Dello Monaco, Eric Antmann, Philip Chorath

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Sludge generation during wastewater treatment is inevitable even with proper management and treatment. Yet proper handling and disposal of sludge are still challenging in terms of treatment cost, presence of recalcitrant contaminants of concern, sanitary issues, and public acceptance. Conventional disposal methods (i.e. landfilling, incineration) have created concerns in terms of legislative restrictions and community perception, incentivizing consideration of substitute sludge management options. Furthermore, with proper treatment, biosolids from sludge, rich in organic materials and nutrients, could be utilizable as fertilizer. Despite the challenges of dealing with sludge, no review has dealt with integrated source reduction and reuse as the best sustainable management practices for sludge treatment. In this review, we present two main approaches as potentially sustainable controls: (i) pretreatment for minimizing extensive sludge treatment, and (ii) recycling and reuse of residual sludge. Drawing on these approaches, we also suggest strategies for efficient pretreatment mechanisms and residual reuse, presenting ideas for prospective future research.

Original languageEnglish (US)
Pages (from-to)133-145
Number of pages13
JournalJournal of Environmental Management
Volume158
DOIs
StatePublished - Aug 1 2015

Keywords

  • Beneficial reuse
  • Biosolid
  • Chemical pretreatment
  • Composting
  • Disintegration
  • Electromagnetic pretreatment
  • Nutrient recycling
  • Source reduction
  • Thermal pretreatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

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