CHED 818 |
| Katherine Rey Zodrow, Susanne Mueller, Andre Lerch, and Wolfgang Uhl. |
| Ultrafiltration with coagulation pre-treatment is an emerging water treatment technology. In order to decrease membrane fouling and increase membrane flux, air is pumped through the membrane's tank to clean the membrane. Little is known about this aeration step, especially in regard to the release of DOC from the flocs. We found that the amount of DOC released from the flocs positively correlates with the amount of energy inserted into the system (i.e. the airflow rate and aeration time). Because the use of a pilot plant for numerous tests requires both time and money, the aeration procedure was modelled using jar tests and G values that corresponded to different air flows. Tests using 0.15 mmol/L Al as Al2(SO4)3 showed that an increase in energy input (measured by the stirring time and rate) lead to an increase in the amount of DOC released. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, 27 March 2006 Georgia World Congress Center -- Ex. Hall B4, Poster
Division of Chemical Education |