Treatment of sewage sludge in a thermophilic membrane reactor (TMR) with alternate aeration cycles

Collivignarelli, Maria Cristina; Castagnola, Federico; Sordi, Marco; Bertanza, Giorgio

doi:10.1016/j.jenvman.2015.07.031

Cited by 38 publications

(19 citation statements)

References 24 publications

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“…Recently, their extension to sludge treatment has been explored [77]. In effect, an aerobic thermophilic biomass is characterized by a lower yield, hence a decrease in specific sludge production (down to 0.02 kg SSV/kg COD removed ).…”

Section: Introductionmentioning

confidence: 99%

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Abbà

Collivignarelli

Manenti

et al. 2017

Journal of Chemistry

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A thermophilic aerobic membrane reactor (TAMR) treating high-strength COD liquid wastes was submitted to an integrated investigation, with the aim of characterizing the biomass and its rheological behaviour. These processes are still scarcely adopted, also because the knowledge of their biology as well as of the physical-chemical properties of the sludge needs to be improved. In this paper, samples of mixed liquor were taken from a TAMR and submitted to fluorescent in situ hybridization for the identification and quantification of main bacterial groups. Measurements were also targeted at flocs features, filamentous bacteria, and microfauna, in order to characterize the sludge. The studied rheological properties were selected as they influence significantly the performances of membrane bioreactors (MBR) and, in particular, of the TAMR systems that operate under thermophilic conditions (i.e., around 50 ∘ C) with high MLSS concentrations (up to 200 gTS L −1 ). The proper description of the rheological behaviour of sludge represents a useful and fundamental aspect that allows characterizing the hydrodynamics of sludge suspension devoted to the optimization of the related processes. Therefore, in this study, the effects on the sludge rheology produced by the biomass concentration, pH, temperature, and aeration were analysed.

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Section: Introductionmentioning

confidence: 99%

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Abbà

Collivignarelli

Manenti

et al. 2017

Journal of Chemistry

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“…They represent proper indicators of the current scenario, although the scientific literature is proposing some promising alternatives. For instance, the authors are currently carrying out a study aimed at recovering nutrients from sludge (Collivignarelli et al, 2015a) by running a thermophilic membrane reactor; this process has led to promising results indeed in liquid wastes treatment (Bertanza et al, 2010a;Collivignarelli et al, 2015b).…”

Section: Methodsmentioning

confidence: 99%

How far are we from closing the loop of sewage resource recovery? A real picture of municipal wastewater treatment plants in Italy

Papa

Foladori

Guglielmi³

et al. 2017

Journal of Environmental Management

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“…Sewage sludge treated in a thermophilic membrane reactor at pilot scale (1 m 3 ) with alternate aeration cycles using a two-phase cycle that involved the "startup phase" and "regime phase" gave removal efficiencies of 64% for volatile solids and 57% for total COD with an average hydraulic retention time of 20 days, an organic loading rate of about 1.4-1.8 kg COD m -3/d and aeration cycles alternating every four hours (Collivignarelli et al, 2015).…”

Section: Digestionmentioning

confidence: 99%

Biosolids and Sludge Management

Brisolara

2016

Water Environment Research

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This review section covers journal articles and conference papers related to biosolids and sludge management that were published in 2015. The literature review has been divided into the following sections: • Biosolids regulations and management issues; • Biosolids characteristics, quality and measurement including microconstituents, pathogens, nanoparticles and metals; • Sludge treatment technologies including pretreatment and sludge minimization, conditioning and dewatering, digestion, composting and innovative technologies; • Disposal and reuse including combustion/incineration, agricultural uses and innovative uses; • Odor and air emissions; and • Energy issues.

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Treatment of sewage sludge in a thermophilic membrane reactor (TMR) with alternate aeration cycles

Cited by 38 publications

References 24 publications

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

How far are we from closing the loop of sewage resource recovery? A real picture of municipal wastewater treatment plants in Italy

Biosolids and Sludge Management

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