Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low carbon operation strategies and cases of sewage treatment plants
The difference between the design parameters such as water quantity, water quality and temperature and the actual operation situation of sewage treatment plants leads to excessive carbon emission. Based on the energy consumption composition data of the Class A effluent standard of sewage treatment plants, the main influencing factors of indirect carbon emissions were analyzed, and low-carbon operation strategies such as improving link flow and lift management, aeration flow and intensity management, mixing intensity management were proposed. Practical cases demonstrated that the adoption of low-carbon operational strategies in 8 sewage treatment plants had achieved significant cost savings and improved operational efficiency, as well as a notable reduction in indirect carbon emissions. Power consumption had decreased from 3.837 7×107 kW·h/a to 3.348 5×107 kW·h/a, the indirect carbon(calculated by CO2) emissions had decreased from 3 424.0 t/a to 2 987.5 t/a, with a decrease of 12.7%. The dosage of phosphorus removal agents had decreased from 4 491.1 t/a to 3 751.9 t/a, and the dosage of carbon source agents had decreased from 5 145.6 t/a to 2 013.4 t/a, the indirect carbon emissions from drug consumption had decreased from 5 084.9 t/a to 2 488.3 t/a, with a decrease of 51.1%, resulting in significant emission reduction effects and significant increase of project revenue. In addition, the evaluation of low-carbon operation for sewage treatment plants with low-concentration influent water had been upgraded to level 3, but the improvement was not significant for sewage treatment plants with high total nitrogen in the influent, high energy-consuming process equipment, and high industrial water content. Carbon capture, anaerobic digestion-cogeneration, autotrophic denitrification, phosphorus removal by denitrification, sewage latent heat recovery and utilization technologies were necessary to achieve low-carbon operation.
Low carbon operation strategies and cases of sewage treatment plants
The difference between the design parameters such as water quantity, water quality and temperature and the actual operation situation of sewage treatment plants leads to excessive carbon emission. Based on the energy consumption composition data of the Class A effluent standard of sewage treatment plants, the main influencing factors of indirect carbon emissions were analyzed, and low-carbon operation strategies such as improving link flow and lift management, aeration flow and intensity management, mixing intensity management were proposed. Practical cases demonstrated that the adoption of low-carbon operational strategies in 8 sewage treatment plants had achieved significant cost savings and improved operational efficiency, as well as a notable reduction in indirect carbon emissions. Power consumption had decreased from 3.837 7×107 kW·h/a to 3.348 5×107 kW·h/a, the indirect carbon(calculated by CO2) emissions had decreased from 3 424.0 t/a to 2 987.5 t/a, with a decrease of 12.7%. The dosage of phosphorus removal agents had decreased from 4 491.1 t/a to 3 751.9 t/a, and the dosage of carbon source agents had decreased from 5 145.6 t/a to 2 013.4 t/a, the indirect carbon emissions from drug consumption had decreased from 5 084.9 t/a to 2 488.3 t/a, with a decrease of 51.1%, resulting in significant emission reduction effects and significant increase of project revenue. In addition, the evaluation of low-carbon operation for sewage treatment plants with low-concentration influent water had been upgraded to level 3, but the improvement was not significant for sewage treatment plants with high total nitrogen in the influent, high energy-consuming process equipment, and high industrial water content. Carbon capture, anaerobic digestion-cogeneration, autotrophic denitrification, phosphorus removal by denitrification, sewage latent heat recovery and utilization technologies were necessary to achieve low-carbon operation.
Low carbon operation strategies and cases of sewage treatment plants
YANG Xiongqiang (Autor:in) / WANG Haoyu (Autor:in)
2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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