Sewage-water treatment with bio-energy production and carbon capture and storage

Poblete, Israel Bernardo S.; Araújo, Ofélia de Queiroz Fernandes; Medeiros, José Luiz de

doi:10.1016/j.chemosphere.2021.131763

Cited by 13 publications

(8 citation statements)

References 46 publications

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“…In the A/O process, the aeration concentration at the front end of the aeration tank can be improved without changing the aeration mode by adjusting the ventilation layout in each area of the aeration tank [47][48][49]. Maintaining the original aeration rate in the middle and later stages of sewage treatment can ensure the effluent quality of the sewage treatment plant [50,51].…”

Section: Discussionmentioning

confidence: 99%

Research on Greenhouse Gas Emission Reduction Methods of SBR and Anoxic Oxic Urban Sewage Treatment System

Bai

Wen

2023

Sustainability

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With the rising awareness of environmental protection, more sewage treatment plants have been built. However, this is also one of the main sources of greenhouse gas emissions. This study carried out a series of sewage treatment experiments to analyze the factors affecting the greenhouse gas emissions of the two commonly used treatment processes in the current urban sewage treatment: the A/O and SBR methods. The experimental results showed that the total amount of greenhouse gases emitted by the A/O method was 415.63 gCO2-eq/m3, and the total amount of greenhouse gases emitted by the SBR method was 879.51 gCO2-eq/m3. The N2O emission factor in the A/O method experimental group was 0.76% of the nitrogen content in the influent. In the aerobic section, when the content of dissolved oxygen was in the range of 1.30~2.10 mg/L, and the content of dissolved oxygen was 1.90 mg/L, the minimum N2O emission factor was reduced to 0.29% of the nitrogen content of the influent. In the SBR experimental group, the ammonia oxidation rate of sewage decreased rapidly as the temperature decreased, thus affecting the discharge rate of N2O. At 25 °C, the biological enzyme activity of nitrifying bacteria was higher, thus promoting denitrification and generating more greenhouse gases. The research results provide reference for strengthening the management of sewage treatment plants and reducing greenhouse gas emissions from sewage treatment plants.

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Section: Discussionmentioning

confidence: 99%

Research on Greenhouse Gas Emission Reduction Methods of SBR and Anoxic Oxic Urban Sewage Treatment System

Bai

Wen

2023

Sustainability

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“…Movahed and Avami (2020) [101] also employed ADM-1 to calculate the biogas produced from the primary and secondary sewage-sludge processing. However, differently from Poblete et al (2022) [100], this study did not consider treating the flue gas for CCS and also did not consider the more efficient Combined Cycles, i.e., the biogas was fired in eight Micro-GTs with 100 kW power output instead of using large GTs coupled with HRSG and Rankine cycle.…”

Section: Biogas Gas Turbine Cycles and Biogas Combined Cyclesmentioning

confidence: 98%

“…The power generated in the optimized system supplied 47% of the SWTP's power demand and 100% of its heat demand. Differently from Lee et al (2017) [20], Poblete et al (2022) [100] designed and simulated a large-scale-GHG negative emission-SWTP in Figure 3, with optimized bioenergy production via Biogas Combined Cycle, integrating GT Cycles via HRSG to Rankine cycle running steam turbines, wherein the GTs were fed with the biogas production modeled via ADM-1 simulation. In this study, two GTs fired 205,600 m 3 /d of biogas, providing 14044 kW of power and an additional 8227 kW from the Rankine cycle, assuming no CCS in the flue gas.…”

Section: Biogas Gas Turbine Cycles and Biogas Combined Cyclesmentioning

confidence: 99%

“…In this study, two GTs fired 205,600 m 3 /d of biogas, providing 14044 kW of power and an additional 8227 kW from the Rankine cycle, assuming no CCS in the flue gas. In the negative-emission case, Poblete et al (2022) [100] showed that the Rankine cycle produced only 1928 kW due to the energy penalty of post-combustion CCS treating flue gas, but the captured CO 2 can generate auxiliary revenues if exported as a dense enhanced oil recovery agent (Figure 3). Despite the impressive reduction in power brought by CCS, this study demonstrated that a SWTP operating as a Bioenergy with CCS (BECCS) system still has the potential to reach economic feasibility while promoting negative emissions, which is helpful in the climatechange scenario.…”

Section: Biogas Gas Turbine Cycles and Biogas Combined Cyclesmentioning

confidence: 99%

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Sewage-Water Treatment and Sewage-Sludge Management with Power Production as Bioenergy with Carbon Capture System: A Review

2022

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Sewage-water treatment comprehends primary, secondary, and tertiary steps to produce reusable water after removing sewage contaminants. However, a sewage-water treatment plant is typically a power and energy consumer and produces high volumes of sewage sludge mainly generated in the primary and secondary steps. The use of more efficient anaerobic digestion of sewage water with sewage sludge can produce reasonable flowrates of biogas, which is shown to be a consolidated strategy towards the energy self-sufficiency and economic feasibility of sewage-water treatment plants. Anaerobic digestion can also reduce the carbon footprint of energy sources since the biogas produced can replace fossil fuels for electricity generation. In summary, since the socio-economic importance of sewage treatment is high, this review examined works that contemplate: (i) improvements of sewage-water treatment plant bioenergy production and economic performances; (ii) the exploitation of technology alternatives for the energy self-sufficiency of sewage-water treatment plants; (iii) the implementation of new techniques for sewage-sludge management aiming at bioenergy production; and (iv) the implementation of sewage-water treatment with bioenergy production and carbon capture and storage.

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“…14 Wastewater carbon pretreatment involves the flocculation, adsorption, and degradation of organics. 20,21 The organic carbon should be captured or transferred as much as possible to reduce its impact on autotrophic nitrogen removal in the case of ensuring the carbon demand of subsequent biochemical processes. 22,23 Maximizing carbon pretreatment was also conducive to resource recovery 24 and energy conversion.…”

Section: Introductionmentioning

confidence: 99%

Partial nitrification/ANAMMOX (PN/A) membrane aerated biofilm reactor (MABR) under a low C/N ratio and metagenomics identification

Sun

et al. 2023

Environ. Sci.: Water Res. Technol.

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Sewage-water treatment with bio-energy production and carbon capture and storage

Cited by 13 publications

References 46 publications

Research on Greenhouse Gas Emission Reduction Methods of SBR and Anoxic Oxic Urban Sewage Treatment System

Research on Greenhouse Gas Emission Reduction Methods of SBR and Anoxic Oxic Urban Sewage Treatment System

Sewage-Water Treatment and Sewage-Sludge Management with Power Production as Bioenergy with Carbon Capture System: A Review

Partial nitrification/ANAMMOX (PN/A) membrane aerated biofilm reactor (MABR) under a low C/N ratio and metagenomics identification

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