Biosolids and sludge management

Abstract

The advancements in the field of sludge and biosolids have been made over the past year. This review outlines the major contributions of researchers that have been published in peer‐reviewed journals and conference proceedings throughout 2018. The review is organized in sections including regulatory developments and market analysis; analysis and quantification of characteristics including microconstituents and metals; treatment advances for the conversion of sludge to biosolids including pretreatment and sludge minimization, conditioning and dewatering, digestion, composting, and innovative technologies; product development and reuse including adsorbents and thermal products, agricultural and other uses, and innovative uses; odor and air emissions; and energy factors.Practitioner points Summary of advances in the field of residuals and biosolids research in 2018. This review outlines the major contributions of researchers that have been published in peer‐reviewed journals and conference proceedings. Topics covered range from regulation to innovation.

Sustainable faecal sludge management in Internally Displaced Persons (IDPs) settlements in tropical climate: A review

“…However, challenges arise from potential pathogen contamination in the frass and heavy metal accumulation in larvae. Thermal treatment of frass before agricultural use and the use of mature larvae in animal feed help address these concerns [98,103]. In conclusion, the Black Soldier Fly larvae's bioconversion of faecal sludge presents an innovative and sustainable approach, offering economic benefits, nutrient-rich by-products, and environmental advantages.…”

Application of Advanced Oxidation Technology in Sludge Conditioning and Dewatering: A Critical Review

“…Overall, the high energy consumption and high equipment cost of physical conditioning limit its large-scale use [ 12 ]. Microbial conditioning promotes mutual coagulation and precipitation of colloidal suspensions in water and improves sludge dewatering performance [ 13 ]. Microbial conditioning has strong advantages, such as high efficiency, non-toxicity, no secondary pollution, biodegradation, compact sludge floc, and a wide range of application [ 14 ].…”