| Autor: |
James K. Smith, Ramon G. Lee, Kevin L. Dixon, Paul Zielinski |
| Rok vydání: |
1991 |
| Předmět: |
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| Zdroj: |
Journal - American Water Works Association. 83:141-148 |
| ISSN: |
0003-150X |
| DOI: |
10.1002/j.1551-8833.1991.tb07132.x |
| Popis: |
Spray jet aeration, packed-tower aeration, and multistaged bubble aeration were evaluated for gas bubbles into a column or tank of removal of radon from water. It was found that spray jet aeration was limited to 175 percent water (e.g., diffused aeration) to produce radon removal, but packed-tower aeration and multistaged bubble aeration were observed to intense mixing. This creates contact be very effective and flexible for removing this radioactive gas. Removal efficiency of the packed between the bulk liquid and air-water tower was largely a function of packing height. The current design of multistaged bubble interface at the bubble surface. The aeration probably limits the system to wells with capacities of 800 gpm or less. second category of equipment is designed to produce thin films or small droplets of Removal of dissolved gases by aeration water that will yield rapid mass transfer Radon is a naturally occurring, watersoluble radioactive gas. Its distribution in groundwater is dictated by the types of rock and parent material constituting aquifer deposits. Radon concentrations as a function of geographic location are highly variable, a fact supported by the 1986-87 radon survey of the American Water System.’ The removal of gas& (such-as radon) from water requires a transfer from the water phase to thegas phase. This mass transfer occurs across a gas-liquid interface in the direction of decreasing concentration. Gas-liquid contacting systems (aeration systems) are designed to create and continuously renew the interface between the two phases.3 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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