Development of Practical Advanced Oxidation Treatment System for Decontamination of Soil and Groundwater Contaminated with Chlorinated Solvents (TCE, PCE): Phase II

염소계 화합물(TCE, PCE)로 오염된 토양 및 지하수 처리를 위한 실용적 고도산화처리시스템 개발 (II)

  • Kim, Sang-Yeek (Department of Chemical Engineering, Hanyang University) ;
  • Sohn, Seok-Gyu (Department of Chemical Engineering, Hanyang University) ;
  • Kong, Sung-Ho (Department of Chemical Engineering, Hanyang University)
  • Received : 2009.07.11
  • Accepted : 2009.11.23
  • Published : 2010.04.30

Abstract

Advanced oxidation processes (AOPs) have advantages to reduce the processing time and mineralize contaminants dissolved in groundwater. Recently, remediation techniques for organic contamination in groundwater have been studied, and technology using $UV/H_2O_2$ is generally accepted as one of the most powerful and reliable alternative for the remediation of groundwater contamination. In this study, $UV/H_2O_2$ technology, which generates hydroxyl radical ($\cdot$ OH) as known for strong non-selective oxidant, was used to degrade chlorinated solvents (TCE and PCE), and it was expanded to apply continuous stirred tank reactor (CSTR) system (i.e. combinations of three CSTR). The tested parameters for CSTR system were retention time and groundwater/$H_2O_2$ injection volume ratio. To find optimum parameters for CSTR system, various retention time (6 min ~ 90 min) and groundwater/$H_2O_2$ injection volume ratio (5/1 ~ 119/1) were tested. Other conditions for CSTR were adapted from the batch test results, which concentration of $H_2O_2$ and UV dose were 29.4 mM (0.1%) and 4.3 kWh/L, respectively. Based on the experimental results, the optimum parameters for CSTR system were 20 min for retention time and 119/1 for groundwater/$H_2O_2$ injection volume ratio. Applying these optimum conditions, chlorinated solvents (TCE and PCE) were removed at 99.9% and 99.6%. Moreover, the effluent concentrations of TCE and PCE are 0.036 mg/L and 0.087 mg/L, respectively, which are satisfied the regulatory level (TCE 0.3 mg/L, PCE 0.1 mg/L). Consequently, the CSTR system using $UV/H_2O_2$ technology can achieve high removal efficiency in the event of treatment of groundwater contaminated by chlorinated solvents (TCE and PCE).

Acknowledgement

Supported by : 한국환경산업기술원(KIETI)

References

  1. Alibegic, D., Tsuneda, S., and Hirata, A., 2001, Kinetics of tetrachloroethylene (PCE) gas degradation and byproducts formation during $UV/H_2O_2$ treatment in UV-bubble column reactor, Chem. Eng. Sci., 56, 6195-6203. https://doi.org/10.1016/S0009-2509(01)00217-2
  2. Anderson, M.R., Johnson, R.L., and Pankow, J.F., 1992, Dissolution of dense chlorinated solvents into groundwater. I. Dissociation from a well-defined residual source, Ground Water, 30, 250-256. https://doi.org/10.1111/j.1745-6584.1992.tb01797.x
  3. Bedient, P.B., Rifai, H.S., and Newell, C.J, 1994, Ground water contamination: Transport and remediation, Prentice-Hall, Englewood Cliffs, NJ.
  4. Belhateche, D. and Simons, J.M., 1991, Using cobalt-ultraviolet spectrophoto-metry to measure hydrogen peroxide concentration in organically laden groundwater, J. Am. Water Works Assoc., 83(8), 70.
  5. Buxton, G.V., Greenstock, C.L., Helman, W.P., and Ross, A.B., 1988, Critical review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals(.OH/.O-) in aqueous solution, J. Phys. Chem. Ref. Date, 17, 752-755.
  6. Chen, G, Hoag, G.E., Chedda, P., Nadim, F., Woody B.A., and Dobbs, G.M., 2001, The mechanism and applicability of in situ oxidation of trichloroethylene with Fenton's reagent, J. Hazard Mar., B87, 171-186.
  7. Den, W., Ravindran, V., and Pirbazari, M., 2006, Photooxidation and biotrickling filtration for controlling industrial emissions of trichloroetylene and perchloroethylene, Chem. Eng. Sci., 61, 7909-7923. https://doi.org/10.1016/j.ces.2006.09.015
  8. Gehringer, P., Proksch, E., Szinovatz, W., and Eschweiler, H., 1988, Decomposition of trichloroethylene and tetrachloroethylene in drinking water by a combined radiation/ozone treatment, Water Res., 22(5), 645-646. https://doi.org/10.1016/0043-1354(88)90067-X
  9. Hood, E.D., Thomson, N.R., Grossi, D., and Farquhar, G.J., 2000, Experimental determination of the kinetic rate law for the oxidation of perchloroethylene by potassitun permanganate, Chemosphere, 40, 1383. https://doi.org/10.1016/S0045-6535(99)00278-7
  10. Huang, K.C., Hoag, G.E., Chheda, P., Woody. B.A., and Dobbs, G.M., 2001, Oxidation of chlorinated ethenes by potassium permanganate: a kinetic study, J. Hazard Mar., B87, 155-169.
  11. Kang, N., Hua, I., and Rao, P.S.C., 2006, Enhanced Fenton's destruction of non-aqueous phase perchloroethylene in soil system, Chemosphere, 63, 1685-1698. https://doi.org/10.1016/j.chemosphere.2005.10.011
  12. Kueper, B.H., Redman, D., Starr, R.C., Reitsma, S., and Mah, M., 1993, A field experiment to study the behavior or tetrachloroethylene below the water-table spatial distribution of residual and pooled DNAPL, Ground Water, 31(5), 756-766. https://doi.org/10.1111/j.1745-6584.1993.tb00848.x
  13. Laat, J., Tace, E., and Dore, M., 1994, Degradation of chloroethanes in dilute aqueous solutions by $H_2O_2/UV$, Water Res., 56, 6195-6203.
  14. Lerini, O., Oliveros, E., and Bralm, A.M., 1993, Photochemical processes for water treatment. Chemical Reviews, 93, 671-698. https://doi.org/10.1021/cr00018a003
  15. Li, K., Stefan, M.I., and Crittenden, J.C., 2007, Trichloroethylene degradation by $UV/H_2O_2$ Advanced Oxidation Process: Product Study and Kinetic Modeling, Environ. Sci. Technol., 41, 1696-1703. https://doi.org/10.1021/es0607638
  16. Liang, C., Bruell, C.J., Marley, M.C., and Sperry, K.L., 2004a, Persulfate oxidation for in situ remediation of TCE. I. Activated by Ferrous ion with and without a persulfate-thiosulfate redox couple, Chemosphere, 55, 1213-1223. https://doi.org/10.1016/j.chemosphere.2004.01.029
  17. Liang, C., Bruell, C.J., Marley, M.C., and Sperry, K.L., 2004b, Persulfate oxidation for in situ remediation of TCE. II. Activated by chelated ferrous ion, Chemosphere, 55, 1225-1233. https://doi.org/10.1016/j.chemosphere.2004.01.030
  18. Liang, C., Wang, Z.S., and Bruell, C.J., 2007, Influence of pH on persulfate oxidation of TCE at ambient temperatures, Chemosphere, 66, 106-113. https://doi.org/10.1016/j.chemosphere.2006.05.026
  19. Liang, C., Lee, I., Hsu, Y., Liang, C.P., and Lin, Y, 2008, Persulfate oxidation of trichloroethy lene with and without iron activation in porous media, Chemosphere, 70, 426-435. https://doi.org/10.1016/j.chemosphere.2007.06.077
  20. Mauk, C.E., Prengle, H.W. Jr., and Legan, RW., 1976, Chemical oxidation of cyanide species by ozone with irradiation from ultraviolet light, Trans. Soc. Mining Engineers AIME, 20, 297-300.
  21. Prengle, H.W. Jr., Nall, A.E., and Jodhi, D.S., 1980, Oxidation of Water Supply Refractory Species by Ozone with Ultraviolet Radiation, EPA-600/2-80-110. U.S. Environmental Protection Agency, Cincinnati, OH.
  22. Prengle, H. W. Jr., 1983, Experimental rate constants and reactor considerations for the destruction of micropollutants and trihalomethane precursors by ozone with UV radiation, Environ. Sci. Technol., 17, 743-747. https://doi.org/10.1021/es00118a010
  23. Salari, D., Daneshvar, N., Aghazadeh, F., and Khataee, A.R, 2005, Application of artificial neural networks for modeling of the treatment of wastewater contaminated with methyl tert-butyl ether (MTBE) by $UV/H_2O_2$ process, J. Hazard Mar., 125, 205-210. https://doi.org/10.1016/j.jhazmat.2005.05.030
  24. Shimoda, S., Prengle, H.W. Jr., and Symons, J.M., 1997, $H_2O_2/VISUV$ photo-oxidation process for treatment of waterborne hazardous substances - Reaction mechanism, rate model, and data for tubular flow and flow stirred tank reactors, Waste Management, 17(8), 507-515. https://doi.org/10.1016/S0956-053X(97)10059-9
  25. Zhang, H., Choi, H.J., and Huang, C.P., 2006, Treatment of landfill leachate by Fenton's reagent in a continuous stirred tank reactor, J. Hazard Mar., 136, 618-623. https://doi.org/10.1016/j.jhazmat.2005.12.040
  26. 손석규, 이종열, 정재성, 이홍균, 공성호, 2007, 염소계 화합물(TCE, PCE)로 오염된 토양 및 지하수 처리를 위한 실용적 고도 산화처리시스템 개발 (I), 지하수토양환경, 12(5), 105-114.