Optimization of Energy Consumption and Mass Transfer Parameters in a Surface Aeration Vessel
This paper reports tests on a lab-scale surface aeration vessel was equipped with a Rushton turbine to examine its performance in terms of standard aeration efficiency (SAE), mixing time, and void fraction characteristics. These characteristics were investigated by tests using variations of rotor sp...
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| Veröffentlicht in: | Water environment research 2016-04, Vol.88 (4), p.355-366 |
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| creator | Mohammadpour, A. AkhavanBehabadi, M. A. Ebrahimzadeh, M. Raisee, M. MajdiNasab, A. R. Nosrati, M. Mousavi, S. M. |
| description | This paper reports tests on a lab-scale surface aeration vessel was equipped with a Rushton turbine to examine its performance in terms of standard aeration efficiency (SAE), mixing time, and void fraction characteristics. These characteristics were investigated by tests using variations of rotor speed, impeller immersion depth, and water level. Results showed that variation of impeller immersion depth had a greater effect on the SAE compared to variation of water level. Moreover, the SAE increased with rotor speeds up to about 150 to 200 rpm and then decreased. In addition, void fraction improved by impeller immersion depth and rotor speed enhancement; however, mixing time and power number were reduced as rotor speed increased. According to the response surface methodology statistical optimizations, optimum values for rotor speed, impeller immersion depth, and water level were 168.90 rpm, 25 mm, and 30 cm, respectively, to achieve the maximum value of SAE. |
| doi_str_mv | 10.2175/106143016X14504669768093 |
| format | Article |
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In addition, void fraction improved by impeller immersion depth and rotor speed enhancement; however, mixing time and power number were reduced as rotor speed increased. 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Moreover, the SAE increased with rotor speeds up to about 150 to 200 rpm and then decreased. In addition, void fraction improved by impeller immersion depth and rotor speed enhancement; however, mixing time and power number were reduced as rotor speed increased. 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| subjects | Bioreactors Comparative analysis Energy consumption Optimization Oxygen - chemistry response surface methodology standard aeration efficiency statistical evaluation surface aeration Turbines Velocity Waste Disposal, Fluid - instrumentation Waste Disposal, Fluid - methods Waste Water - chemistry Water Purification |
| title | Optimization of Energy Consumption and Mass Transfer Parameters in a Surface Aeration Vessel |
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