The effect of the composting time on the gaseous emissions and the compost stability in a full-scale sewage sludge composting plant

González, Daniel; Colón, Joan; Gabriel, David; Sánchez, Antoni

doi:10.1016/j.scitotenv.2018.11.081

Cited by 64 publications

(23 citation statements)

References 37 publications

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“…To evaluate the final biological stability of the composted material, the dynamic respiration index (DRI) was used. The determination of the DRI was done using a dynamic respirometer [23] as explained in [10].…”

Section: Analytical Methodologymentioning

confidence: 99%

“…Diatomaceous earth (DE) was obtained from the organic fraction of municipal solid wastes (OFMSW) biomethanization plant of Can Barba in Terrassa, Barcelona, and pruning waste (PW), used as bulking agent, was obtained from the composting plant of Manresa, Barcelona. The mixing ratio of the three feedstocks was 1:0.25:3 (SS:DE:PW) on a volume basis (1:0.15:0.48 w/w basis), which is a typical mixing ratio used in SS composting [10]. Table 1 shows the physical-chemical characteristics of each material and mixture.…”

Section: Characteristics Of the Feedstocksmentioning

confidence: 99%

“…According to the temperature and OUR profiles and the DRI value of the final material (1.2 ± 0.2 g O2•h −1 •kg −1 VS), which was reduced an 81% with respect to the mixture's initial DRI, the composting was performed properly and the material was stabilized. The SS composting process time was fixed at 20 days on the basis of following similar procedures that have been generally described by the GICOM research group in different SS composting studies [6,10,22]. Moreover, the fact that non-digested SS was used, which is a waste that presents higher biological activity, was a reason to establish this duration in order to ensure a proper biological stabilization of the treated mixture.…”

Section: Greenhouse Gases Emissionmentioning

confidence: 99%

“…Researchers in [6] reported NH 3 and tVOCs emission factors in the range of 1.33-4.12 kg NH 3 •Mg −1 DM-SS and 0.66-1.00 kg C-VOC•Mg −1 DM-SS, respectively, during composting of raw sludge in a 50 L aerated pilot-scale reactor. González et al [10] studied the emission of NH 3 and tVOCs in a full-scale sewage sludge composting plant, reporting emission factors of 25.32 kg NH 3 •Mg −1 DM-SS and 6.17 kg C-VOC•Mg −1 DM-SS. Maximum concentrations measured during SS composting were 2600 ppm v of NH 3 , 66 ppm v of H 2 S, and 1650 ppm v of tVOCs, which were observed during the peak of maximum temperature of the reactor.…”

Section: Nh 3 H 2 S Tvocs and Odour Emissionmentioning

confidence: 99%

“…Due to its importance in environmental impact assessment and the valuable information that it represents when it comes to proposing mitigation strategies and avoiding population nuisance, gaseous emission of GHG and odorant compounds has been widely reported for SS composting in pilot-scale [6,9], and some studies have been conducted in full-scale facilities [10,11]. Emission factors referring to specific pollutants are a useful tool for environmental impact assessment and for estimating the overall emission rate of a treatment process based on a specific activity index, which should represent the process evaluated [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the Gaseous and Odour Emissions from the Composting of Conventional Sewage Sludge

et al. 2020

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Many different alternatives exist to manage and treat sewage sludge, all with the common drawback of causing environmental and odour impacts. The main objective of this work is to present a full inventory of the gaseous and odorous emissions generated during the bench-scale composting of conventional sewage sludge, aiming at assessing the process performance and providing global valuable information of the different gaseous emission patterns and emission factors found for greenhouse gases (GHG) and odorant pollutants during the conventional sewage sludge composting process. The main process parameters evaluated were the temperature of the material, specific airflow, average oxygen uptake rate (OUR), and final dynamic respiration index (DRI), resulting in a proper performance of the sewage sludge composting process and obtaining the expected final product. The obtained material was properly stabilized, presenting a final DRI of 1.2 ± 0.2 g O2·h−1·kg−1 Volatile Solids (VS). GHGs emission factor, in terms of kg CO2eq·Mg−1 dry matter of sewage sludge (DM–SS), was found to be 2.30 × 102. On the other hand, the sewage sludge composting odour emission factor (OEF) was 2.68 × 107ou·Mg−1 DM–SS. Finally, the most abundant volatile organic compounds (VOC) species found in the composting gaseous emissions were terpenes, sulphur compounds, ketones, and aromatic hydrocarbons, whereas the major odour contributors identified were dimethyldisulphide, eucalyptol, and α-pinene.

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Section: Analytical Methodologymentioning

confidence: 99%

Section: Characteristics Of the Feedstocksmentioning

confidence: 99%

Section: Greenhouse Gases Emissionmentioning

confidence: 99%

Section: Nh 3 H 2 S Tvocs and Odour Emissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of the Gaseous and Odour Emissions from the Composting of Conventional Sewage Sludge

et al. 2020

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Wastewater Treatment Sludge and Agricultural Wastes: Management by Composting Process

Ucaroglu,

Atalay

2024

Water Air Soil Pollut

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This study aimed to investigate the compostability of wastewater treatment sludge and evaluate the effects on compost quality of adding cotton gin waste and peanut shell. For this purpose, treatment sludge was mixed with cotton gin waste in the ratios of 60:40 in M1 reactor and 80:20 in M2 reactor, while in M3 and M4 reactors, treatment sludge was mixed with peanut shell in the same proportions. The highest temperatures were reached in reactors M2 (65.2 °C) and M4 (68.7 °C) where 80% treatment sludge was added. These reactors also experienced the highest organic matter losses of 42.2% and 31.5%, respectively. It can be stated that a faster microbial decomposition and stabilization occurred in these reactors. It can be said that the composting process may be a preferable method for the management of treatment sludge and agricultural wastes. Furthermore, the outcomes of the study can serve the food industry and agriculture sector through effective bioconversion of organic waste. Graphical Abstract

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Biochemical changes, metal content, and spectroscopic analysis in sewage sludge composted with lignocellulosic residue using FTIR-MIR and FTIR-NIR

Bicalho,

Pegoraro,

Almeida Neta

et al. 2024

Environ Sci Pollut Res

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The effect of the composting time on the gaseous emissions and the compost stability in a full-scale sewage sludge composting plant

Cited by 64 publications

References 37 publications

Characterization of the Gaseous and Odour Emissions from the Composting of Conventional Sewage Sludge

Characterization of the Gaseous and Odour Emissions from the Composting of Conventional Sewage Sludge

Wastewater Treatment Sludge and Agricultural Wastes: Management by Composting Process

Biochemical changes, metal content, and spectroscopic analysis in sewage sludge composted with lignocellulosic residue using FTIR-MIR and FTIR-NIR

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