Sludge into Biosolids - Processing, Disposal, Utilization

Spinosa, L.; Vesilind, P. Aarne

doi:10.2166/9781780402215

Cited by 33 publications

(35 citation statements)

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“…r c0 is the value of specific cake resistance at zero pressure and is assumed to vary between typical values of 3 × 10 12 m/kg to 3 × 10 14 m/kg for averagely dewaterable sludge [27]. A midrange value of 5 × 10 13 m/kg was adopted in this study.…”

Section: Model Parametersmentioning

confidence: 99%

Dynamic multidimensional modelling of submerged membrane bioreactor fouling

Boyle-Gotla

Jensen

Yap

et al. 2014

Journal of Membrane Science

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Section: Model Parametersmentioning

confidence: 99%

Dynamic multidimensional modelling of submerged membrane bioreactor fouling

Boyle-Gotla

Jensen

Yap

et al. 2014

Journal of Membrane Science

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“…ane of the most developed reusing methods is thermal drying. Ihis is an attractive alternative and it also provides the opportunity for an economical resource recovery [4]. Actually, thermal drying of sewage sludge is the most common method used in 2 countries of the 27 forming the EU members, a common method on 12 countries and arare method in 1 country [5].…”

Section: Introduetionmentioning

confidence: 99%

Flammability properties of thermally dried sewage sludge

Fernandez-Añez

Torrent

Pejić

2014

Fuel

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HIGHLIGHTS• Flammability parameters of sludge are presented.• Relationships between chemical and flammability properties of sludge are analyzed.• Physical and chemical properties of sludge dusts affects their explosibility.• Seasons and origins of sludge should lead to a differentiation among samples. ABSTRACTThe treatment and disposal of sewage sludge is becoming an urgent need whereby different technologies were developed and integrated into the waste cycle all over the world. One ofthe most used technologies is the thermal drying ofthe sludge. Thermally dried sewage sludge has interesting properties that allow its use as an alternative fue!, but also needs some consideration from the point of view of its safe operation.The aim ofthis study was the research on the flammability properties of sewage sludge, including ignition sensitivity, explosion severity, thermal sensitivity and thermal stability. Furthermore relationships among those properties and composition parameters have been determined, added to the study of their variation depending on their origin or season. Finally, properties related to spontaneous combustion were determined. To study these relationships and characteristics sludge samples were selected from different locations in Spain and taken during different seasons.

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“…Thus waste sludge treatment/disposal has now become a solid waste management challenge. In Canada, more than 0.66 million dry metric tonnes of sludge is produced per year and about 6.5 million dry metric tonnes of sludge per year is generated in the United States (Ludovico Spinosa 2001), whereas annual sludge generation in the European Union is about 10.0 million dry metric tonnes (Pe´rez-Elvira et al 2006). Anaerobic digestion is the most common process exercised for sludge treatment as it not only offers stabilization and volume reduction of sludge for disposal, but also causes the reduction of pathogen and odor potential.…”

Section: Introductionmentioning

confidence: 99%

High pressure homogenization and temperature phased anaerobic digestion for enhanced biogas conversion from municipal waste sludge

Wahidunnabi¹,

Eskicioğlu²

2014

proc water environ fed

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This study, for the first time, compared advanced anaerobic digestion combining temperaturephased anaerobic digestion (TPAD) with high pressure homogenization (HPH) pretreatment to conventional anaerobic digestion of municipal sludge at laboratory scale.The study began with examination of thickened waste activated sludge (TWAS) solubilization due to HPH pretreatment at different pressure (0 to 12,000 psi) and chemical dose (0.009 to 0.036 g NaOH/g total solids). Homogenizing pressure was found as the most significant factor (p-value < 0.05) for increasing solubilization of particulate chemical oxygen demand (COD) and biopolymers in TWAS. Based on the preliminary results, a pretreatment with chemical dose of 0.009 g NaOH/g total solids and pressure of 12,000 psi was selected for digester studies.Upon acclimation of anaerobic inocula to pretreatments, a total number of twelve lab-scale digesters were operated under scenarios including single-stage (control), TPAD, and HPH coupled with TPAD (HPH+TPAD) at sludge retention times (SRTs) of 20, 14 and 7 days. Between mesophilic and thermophilic temperatures, mesophilic digestion was found to benefmore from pretreatments. Relative (to control) improvements in methane yield and volatile solids (VS) removals increased noticeably as SRT was shortened from 20 to 14 and 7 days. HPH+TPAD system was found to achieve maximum methane production and VS removals. Methane production from HPH+TPAD system ranged between 0.20 to 0.25 m 3 CH 4 /kg COD added at different SRTs whereas, VS removals ranged between 43.3 to 64%. Both TPAD and HPH+TPAD systems produced nearly Class A biosolids according to Organic Matter Recycling Regulations (OMRR) of British Columbia (BC), while control digestates were qualified as Class B biosolids only. Energy analysis indicated that all the digestion scenarios attained positive energy balance with HPH+TPAD system operated at 20 d SRT producing maximum net energy of 72.4 to 79.2 GJ/d.

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Sludge into Biosolids - Processing, Disposal, Utilization

Cited by 33 publications

References 0 publications

Dynamic multidimensional modelling of submerged membrane bioreactor fouling

Dynamic multidimensional modelling of submerged membrane bioreactor fouling

Flammability properties of thermally dried sewage sludge

High pressure homogenization and temperature phased anaerobic digestion for enhanced biogas conversion from municipal waste sludge

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