REMOVAL OF VOLATILE ORGANIC-CHEMICALS FROM WATER USING HYDRAULIC JETS
Dempsey, BA; Lee, AP; Kim, B
| HERO ID | 3559387 |
|---|---|
| In Press | No |
| Year | 1993 |
| Title | REMOVAL OF VOLATILE ORGANIC-CHEMICALS FROM WATER USING HYDRAULIC JETS |
| Authors | Dempsey, BA; Lee, AP; Kim, B |
| Journal | Hazardous Waste and Hazardous Materials |
| Volume | 10 |
| Issue | 3 |
| Page Numbers | 323-333 |
| Abstract | Packed towers are the most widely used air-stripping technique for removal of volatile organic chemicals (VOCs) from contaminated water. Hydraulic jets are an alternative air stripping process. The jets increase the air-water surface area per volume of water to be treated by creating a high powered spray. The turbulent conditions within the jets allow the VOCs within the liquid phase to be released to the gas phase. The compounds then can be removed from the gas phase by sorption on activated carbon or by other technologies, This paper reports the results of a research project to evaluate the feasibility of using hydraulic jets to remove VOCs from water. Lumped mass transfer coefficients (k) for nine VOCs were determined experimentally. The mass transfer coefficients were plotted against their respective Henry's Law Constants (H(a)) and an equation, k = 0.506 + 0.14*Log(H(a)), was developed to estimate the mass transfer coefficient (for a specific configuration) for a VOC with a known H(a). Design equations for the removal of VOCs by hydraulic jets also were developed. The concentrations-of VOCs such as benzene and tetrachloethylene were reduced to acceptable levels using the jets. Hydraulic jets require more power than packed towers for removing benzene and tetrachloroethylene. However, hydraulic jets are resistant to fouling by waters high in iron or biological growths. |
| Wosid | WOS:A1993MD22000005 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |