State-of the-Practice for Dewatering of Thermally Hydrolyzed Digested Biosolids

Oerke, David; Higgins, Matt; Murthy, Sudhir; Kharkar, Salil; deBarbadillo, C.; Chiu, Carolyn; Tse, Rosanna; Ho, Humphrey; Panter, Keith; Fountain, Paul; Rizzi, Sam; Reistad, Brett; Campbell, Ryan

doi:10.2175/193864717822156569

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“…With respect to performance, all facilities were over 28% DS minimum, with piston presses at 30-45% DS and plate presses above 40% DS, although the use of additives which contribute to DSs needs to be considered when reviewing plate press dewatering data. There has been a trend where belt presses have been decommissioned and replaced by centrifuges (Oerke et al, 2017).…”

Section: Influence On Dewateringmentioning

confidence: 99%

Impacts of thermal hydrolysis

2020

Sludge Thermal Hydrolysis: Application and Potential

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Impacts of thermal hydrolysis INTRODUCTIONThis chapter deals with the most significant impacts of thermal hydrolysis in more detail. That is to say, its influence on rheological properties of sludge, dewatering, production of recalcitrant compounds and concerns surrounding ammonia toxicity in digestion due to higher loading rates. Treatment of emerging contaminants is also referred to. The influence of thermal hydrolysis on biogas production is presented in Chapter 5, along with other benefits. This chapter also summarizes the various studies which have been conducted on understanding the influence of thermal hydrolysis on microbial communities and their evolvement during the digestion process. INFLUENCE ON SLUDGE RHEOLOGYRheology change due to thermal hydrolysis is arguably the most important consequence of the technology on sludge treatment as it allows higher digester loading ratesdue to increased ease of downstream transportand aids in dewatering (Stickland, 2015). In the informative review by Eshtiaghi and coworkers (2013), sludge is described as a non-Newtonian shear thinning thixotropic fluid, which behaves as a thixotropic colloidal suspension at high shear rates but exhibits polymeric behavior at low shear. The flow behavior of waste-activated sludge has been successfully modelled using the

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Section: Influence On Dewateringmentioning

confidence: 99%

Impacts of thermal hydrolysis

2020

Sludge Thermal Hydrolysis: Application and Potential

View full text Add to dashboard Cite

show abstract

State-of the-Practice for Dewatering of Thermally Hydrolyzed Digested Biosolids

Cited by 1 publication

References 0 publications

Impacts of thermal hydrolysis

Impacts of thermal hydrolysis

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