Methodology for Energy Optimization in Wastewater Treatment Plants. Phase II: Reduction of Air Requirements and Redesign of the Biological Aeration Installation
| Autor: | Mercedes Lloréns Pascual del Riquelme, Francisco del Cerro Velázquez, Ana Belén Lozano Avilés |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
Geography Planning and Development Airflow 02 engineering and technology air transfer efficiency 010501 environmental sciences Aquatic Science Flow modeling Energy minimization 01 natural sciences Biochemistry Reduction (complexity) pressure losses lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Phase (matter) Process engineering 0105 earth and related environmental sciences Water Science and Technology WWTP aeration system redesign lcsh:TD201-500 business.industry Energy consumption oxygen requirements 021001 nanoscience & nanotechnology control strategy Environmental science flow modeling Sewage treatment Aeration 0210 nano-technology business |
| Zdroj: | Water, Vol 12, Iss 1143, p 1143 (2020) Water Volume 12 Issue 4 |
| ISSN: | 2073-4441 |
| Popis: | Phase I of the proposed energy optimization methodology showed how the selection of best management criteria for the biological aeration process, and the guarantee of its control at the wastewater treatment plant (WWTP) in San Pedro del Pinatar (Murcia, Spain) produced reductions of around 20% in energy consumption by considerably reducing the oxygen needs of the microorganisms in the biological system. This manuscript focused on phase II of this methodology, which describes the tools that can be used to detect and correct deviations in the optimal operating points of the aeration equipment and the intrinsic deficiencies in the installation, in order to achieve optimization of the oxygen needs by the microorganisms and improve the efficiency of their transfer from the gas phase to the liquid phase. The objectives pursued were: (i) to minimize the need for aeration, (ii) to reduce the pressure losses in the installation, (iii) to optimize the air supply pressures to avoid excessive energy consumption for the same airflow, and (iv) to optimize the control strategy for the actual working conditions. The use of flow modeling and simulation techniques, the measurement and calculation of air transfer efficiency through the use of off-gas hoods, and the redesign of the aeration facility at the San Pedro del Pinatar WWTP were crucial, and allowed for reductions in energy consumption in Phase II of more than 20%. |
| Databáze: | OpenAIRE |
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