Municipal sewage sludge incineration and its air pollution control

Liang, Youcai; Xu, Donghai; Feng, Peng; Hao, Botian; Guo, Yang; Wang, Shuzhong

doi:10.1016/j.jclepro.2021.126456

Cited by 189 publications

(40 citation statements)

References 101 publications

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“…Therefore, policymakers and technology providers could focus on N 2 O emission control during WWS mono-incineration. Possible solutions include flue gas treatment technologies (selective catalytic and selective non-catalytic reduction), flue gas recirculation, flame cooling, staged air combustion, and low oxygen dilution combustion ( Liang et al., 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Life cycle assessment of struvite recovery and wastewater sludge end-use: A Flemish illustration

Ravi

Beyers

Bruun

et al. 2022

Resources, Conservation and Recycling

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Section: Discussionmentioning

confidence: 99%

Life cycle assessment of struvite recovery and wastewater sludge end-use: A Flemish illustration

Ravi

Beyers

Bruun

et al. 2022

Resources, Conservation and Recycling

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“…At present, the methods of incineration are decided into separate incineration and co-incineration with other wastes. This study focused on separate incineration to compare the effects of the implementation scale on different systems in the environment and economy [5,25,26].…”

Section: Comparison Casesmentioning

confidence: 99%

“…An exchange rate of 1 USD = 6.7 CNY was used, and all financial factors in Table 2 were transformed to USD. With the introduction of the carbon emission quota (CEQ) into SRTS, the cost of the effective difference in carbon emissions should be considered in the cost accounting of the system, as presented in Equation (5). For example, GHG emissions generated during incineration can replace the carbon credit for electricity substitution [14,42].…”

Section: Total Cost Of Sewage Sludge Recycling Systemmentioning

confidence: 99%

“…In addition, soil ecosystems can be affected by the accumulation of heavy metals. Inappropriate treatment causes secondary pollution from heavy metals, organic pollutants, pathogens, and dioxins, that severely threatens human health [5,6]. Consequently, sewage sludge disposal is considered a severe problem in wastewater plants and municipal waste management for local government.…”

Section: Introductionmentioning

confidence: 99%

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Environmental and Economic Implication of Implementation Scale of Sewage Sludge Recycling Systems Considering Carbon Trading Price

et al. 2022

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With China’s ongoing economic development and increasing emphasis on environmental protection, the number and treatment capacity of sewage plants is increasing annually. Simultaneously, sludge production is increasing. In recent years, researchers have investigated various approaches to the environmental and economic analysis of sludge treatment and recycling systems (STRS). These investigations did not take the universal law of different capacities for environmental impact and STRS economics into account. The aim of this study was to analyze the scale effect of STRS with different technologies (i.e., incineration, aerobic composting, used in material (brick), anaerobic digestion) on the environment and economy. Moreover, the cost–benefit impact of introducing a carbon- trading mechanism into the STRS to achieve carbon neutrality was analyzed. After reducing carbon emissions through by-products of STRS, the carbon emission quota can be sold, which will generate income. The results show that the break-even scales for incineration, anaerobic composting, used in building material (brick), and anaerobic digestion are 54,899, 6707, 48,775, and 4425 t/y, respectively. The break-even scale of each system decreased after the introduction of the carbon trading system into the STRS. These findings could provide critical technical information for superior decision-making in sewage sludge recycling systems.

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“…The whole incineration process can be briefly described as follows: when sewage sludge particles are heated, dehydration and devolatilization occur simultaneously from the sewage sludge surface to the interior of the particle, resulting in release of steam and volatiles that pass through and react with the hot layers of char produced from devolatilization; then, the volatiles and light gases burn on the feedstock surface in the presence of oxygen, resulting in an increase of the temperature of the feedstock surface, where the ash layer would melt at a high temperature forming a covering layer of molten ash droplets on the [ 45,71] surface. Finally, combustion of the remaining char would facilitate agglomeration of the ash droplets [35].…”

Section: Incineration/combustionmentioning

confidence: 99%

Thermochemical conversion of sewage sludge for energy and resource recovery: technical challenges and prospects

Zhang

et al. 2021

Environmental Pollutants and Bioavailability

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Thermochemical processes are considered as a promising technology for sewage sludge management, which could achieve volume reduction, energy and resource recovery, and effective destruction of pathogens. However, there are still many technology limitations and challenges of the thermochemical processes toward industrialization and commercialization. This review first briefly discusses the impact of sewage sludge on environmental sustainability and its current treatment and disposal methods. Typical thermochemical conversion technologies i.e., incineration/combustion, pyrolysis, gasification, and hydrothermal liquefaction for energy and resource recovery from sewage sludge are then comprehensively summarized. Subsequently, the technical challenges of thermochemical conversion of sewage sludge and the solutions that have been and/or are being developed to address the challenges are in-depth analyzed. Meanwhile, the prospects and future directions of the thermochemical technologies are outlined. In addition, the economic analysis and life cycle assessment of thermochemical conversion technologies are evaluated. Finally, the conclusions are put forward.

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Municipal sewage sludge incineration and its air pollution control

Cited by 189 publications

References 101 publications

Life cycle assessment of struvite recovery and wastewater sludge end-use: A Flemish illustration

Life cycle assessment of struvite recovery and wastewater sludge end-use: A Flemish illustration

Environmental and Economic Implication of Implementation Scale of Sewage Sludge Recycling Systems Considering Carbon Trading Price

Thermochemical conversion of sewage sludge for energy and resource recovery: technical challenges and prospects

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