aeration optimization Articles
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Ammonia-based aeration control with optimal SRT control: improved performance and lower energy consumption Proceedings ICA2017
Abstract: Ammonia-based aeration control (ABAC) is a cascade control concept for controlling total ammonia nitrogen (NHx-N) in the activated sludge process. Its main goals are to tailor the aeration intensity to the NHx-N loading and to maintain consistent nitrification, which meets effluent limits but minimizes energy consumption and improves nutrient removal. One limitation to ABAC is that the ...
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Analysis of energy efficiency and energy consumption costs: a case study for regional wastewater treatment plant in Malaysia
The objective of this study is to analyze the possibilities of increasing energy efficiency in the central region wastewater treatment plant by focusing on two aspects: biogas production and prediction of energy production. The analysis is based on one of the biggest central region wastewater treatment plants in Malaysia. After studying the energy efficiency, which consists of optimization of ...
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Mixing energy savings, enhanced phosphorus removal - Case study
Topics: wastewater, energy savings, sludge reduction, facultative, partial mix Overview: The municipal WWTP consists of three cells at 32.4 surface acres. Cell one is controlled discharge, partial mix, and 7.23 surface acres with an operating depth of 6.0 ft. Cell two is controlled discharge, facultative, 7.5 surface acres with an operating depth of 10.0 ft. Cell three is controlled ...
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PEWE ConAgra Foods Case Study
Case Study The ConAgra Lamb Weston Connell facility is a large potato processing plant located in the arid desert steppe plateau of Eastern Washington. And in this environment, efficient sustainable use and discharge of water is an important daily business operational concern. With production flourishing there was increased demand on the wastewater treatment system. The wastewater pretreatment ...
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Energy, cost and design aspects of coarse- and fine-bubble aeration systems in the MBBR IFAS process
With the MBBR IFAS (moving bed biofilm reactor integrated fixed-film activated sludge) process, the biomass required for biological wastewater treatment is either suspended or fixed on free-moving plastic carriers in the reactor. Coarse- or fine-bubble aeration systems are used in the MBBR IFAS process. In this study, the oxygen transfer efficiency (OTE) of a coarse-bubble aeration system was ...
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Cardiff WWTW aeration optimisation through scientific control
Aeration optimisation of a 16 basin SBR plant running in ICEAS (Intermittent Cycle Extended Aeration System) mode was under taken by changing the operating parameters from the traditional design of dissolved oxygen (DO) control to a scientific approach using respirometry. Measuring the critical oxygen point for carbonaceous and nitrification bacteria and combining this with in-situ Oxygen Uptake ...
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Eliminating sludge islands in your wastewater lagoon
Old municipal and industrial wastewater lagoons have the tendency to build islands of sludge at various locations around the lagoon. It is most common for older lagoons to build such islands wherever wastewater enters the lagoons. Of course, this is because the solids entering the lagoon have enough weight to fall out of the water as flow velocity is reduced, so the solids pile up just after ...
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Eliminating Sludge Islands in your Wastewater Lagoon
Old municipal and industrial wastewater lagoons have the tendency to build islands of sludge at various locations around the lagoon. It is most common for older lagoons to build such islands wherever wastewater enters the lagoons. Of course, this is because the solids entering the lagoon have enough weight to fall out of the water as flow velocity is reduced, so the solids pile up just after ...
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Submerged Fixed Film: Top 5 Considerations for Evaluating Different Systems
Submerged fixed-film systems are ideal for significantly increasing nitrification in existing wastewater treatment plants. A well-designed and operated system can double the nitrification capacity of an existing aeration basin. When choosing media for fixed-film applications, typical options include small, floating biomass carriers (moving bed systems) or structured-sheet PVC modules fixed in ...
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10 Questions (And Answers) That May Change the Way You Aerate
Slot Injector: How does the slot-shaped nozzle of the Slot Injector™ aeration system improve performance? The slot shaped nozzle and mixing chamber provide a larger shear surface for mass transfer than a circular jet of identical area. This unique shape results in a high percentage of gas dissolution and superior oxygen transfer rates with a 10-20% reduction in energy usage compared to ...
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Using respirometry for energy optimization in a nitrifying biological wastewater treatment system
Many wastewater treatment plants use more than 50% of their total energy budget in the aeration basin and, when nutrient removal is included in the activated sludge process, it is very common that the majority of oxygen uptake goes to the nitrification process. For that reason, in most wastewater treatment plants, energy optimization is focused on nitrification management. This information can be ...
By SURCIS, S.L.
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