Zastosowanie prądów wysokiej częstotliwości i mikrofal do oczyszczania gruntów z substancji ropopochodnych

• Autorzy: Kawala Z. , Atamańczuk T.

Warianty tytułu

EN

On the application of high-frequency electric currents and microwaves to the cleanup of soils from petroleum derivatives

• Języki publikacji: PL

Abstrakty

EN

The paper concentrates on three major items: it gives a review of in situ remediation methods using low-or high-freguency electric currents for heat transmission into the soil,present examples of pilot-scale applications of 60Hz current and radio-frequency radiation to soil cleanup, and discusses the results of laboratory investigations into the remediation of contaminated sand and soil.In the laboratory experiments,electric or electromagnetic energy was supplied to the soil through antennas or electrodes located at the contaminated place.The quantity of the energy absorbed by the soil depended strongly on the dielectric parameters of the aqueous medium,on the mineral components of the sil,and on the contaminants present there.Conversion of radiation of electricity into heat was concomitant with a rise in temperature.When power-line-frequency currents were applied,the process unitized the mechanism of the Joule effect and the principle of ohmic heating. When radiowaves and microwaves were involed,the process followed the mechanism of dielectric heating-simular to the one occuring in microwave ovens.The rise in soil temperature resulted in the desorption or evoporation of organic contaminants into the soil air at a rate which depended on the temperature of the soil.Laboratiry experiments substantiated the utility of microwave heating in the redendiation of contaminated soil.Compared to other remediating methods,microwave heating runs at a very fast rate,yielding high removal of volatile and semi-volatile organics,especially polar contaminants. In the presence of water,the removal of polar and non-polar substances can be described in terms of the steam distillation principle.The cleanup process then runs under steady styate conditions,at a temperature which does not exceed 100 o C. The is of particular importance of the cleanup of organic soil,because overly high temperature may burn the humic substances up.

Słowa kluczowe

PL

prądy wysokiej częstotliwości; substancje ropopochodne

• Wydawca: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski
• Czasopismo: Ochrona Środowiska
• Rocznik: 1998
• Tom: nr 1
• Strony: 43--47
• Opis fizyczny: Bibliogr.17 poz.,rys.

Twórcy

autor

Kawala Z.

• Politechnika Wrocławska

autor

Atamańczuk T.

• Politechnika Wrocławska

Bibliografia

• 1. W. ADAMSKI: Nowoczesne technologie rekultywacji skażonych gleb. Ochrona Środowiska, 1990, nr 1-2(48-49), ss. 7-17.
• 2. G. FURDYN, Z. KAWAŁA: Odnowa zanieczyszczonych gruntów metodami in situ. Ochrona Środowiska, 1996, nr 2(61), ss. 27-37.
• 3. M. STREICH, G. LAUERMANN, K. MEISTER: Special requirements for calculation methods for soil decontamination processes. Fluid Phase Equilibria, 1991, No. 70, pp. 165-173.
• 4. F.S. CHUTE, F.E. VERMEULEN: Present and potential applications of electromagnetic heating in the insitu recovery of oil. AOSTRA J. Res., 1988, Vol. 4, No. 1, pp. 19-33.
• 5. G.C. SRESTY, H. DEV, R.H. SNOW, J.E. BRIDGES: Recovery of bitumen from tar sand deposits with the radio frequency process. SPE Reservoir Engineering, 1986, No. 1, pp. 85-94.
• 6. P. JUTTERSCHENKE: Thermische Insitu-Bodensanierung mit Hochfrequenzenergie. Terra-Tech, 1994, Vol. 3, No. 2, pp. 57-59.
• 7. C.D. DOWNEY, M.G. ELLIOTT: Performance of selected in situ soil decontamination technologies: An Air Force perspective. Environmental Progress, 1990, Vol. 9, No. 3, pp. 169-173.
• 8. H.M. BUETTNER, W.D. DAILY: Cleaning contaminated soil using electrical heating and air stripping. Journal of Environmental Engineering, 1995, Vol. 121, No. 8, pp. 580-588.
• 9. J. THUERY: Microwaves. Artech House Inc., 1992.
• 10. H. PUSHNER: Heating with microwaves. Cleaver-Hume Press Ltd., 1966.
• 11. A.C. METAXAS, R.J. MEREDITH: Industrial microwave heating. Peter Peregrinus Ltd., 1983.
• 12. H. DEV, G.C. SRESTY, J. BRIDGES, D. DOWNEY: Field test of the radio frequency insitu soil decontamination process. Proc. at Superfund 88 National Conference in Washington D.C., 1988.
• 13. W.A. EDELSTEIN, I.E.T. IBEN, O.M. MUELLER, E.E. UZGIRIS, H.R. PHILIPP, P.B. ROEMER: Radiofrequency ground heating for soil remediation: Science and Engineering. Environmental Progress, 1994, Vol. 13, No. 4, pp. 247-252.
• 14. H. DEV, P. CONDORELLI, J. BRIDGES, C. ROGERS, G. DOWNEY: In situ radio frequency heating process for decontamination of soil. Proc. at 191 Meeting of the American Society on Solving Hazardous Waste Problems, 1986, pp. 332-339.
• 15. R.F. SCHIFFMANN: Microwave and dielectric drying in: Handbook of industrial drying. A.S. Mujumdar [Ed.], Marcel Dekker Inc., New York, pp. 327-356.
• 16. Z. KAWAŁA, T. ATAMAŃCZUK: Application of microwave heating for the remediation of soil contaminated with hydrocarbons and fuels. Proc. "Third International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe”, Warsaw 1996, pp. 302-304.
• 17. Z. KAWAŁA, T. ATAMAŃCZUK: Microwave heating for remediation of soil contaminated with hazardous wastes and oils. Proc. "Analysis and Utilization of Oily Wastes", Gdańsk 1996, pp. 346-351.