DEGRADATION OF PCDD, PCDF, PAH, PCB AND CHLORINATED PHENOLS DURING THE DESTRUCTION TREATMENT OF LANDFILL SEEPAGE WATER IN LABORATORY MODEL REACTOR (UV, OZONE, AND UV OZONE)/
S. Vollmuth et R. Niessner, DEGRADATION OF PCDD, PCDF, PAH, PCB AND CHLORINATED PHENOLS DURING THE DESTRUCTION TREATMENT OF LANDFILL SEEPAGE WATER IN LABORATORY MODEL REACTOR (UV, OZONE, AND UV OZONE)/, Chemosphere, 30(12), 1995, pp. 2317-2331
Seepage water of toxic waste landfills is polluted with high concentra
tions of toxic organic compounds. The concentrations in the seepage wa
ter we applied for chlorinated phenols are between 2 mu g/l and 1 mg/l
, for PCB between 800 pg/l and 250 ng/l, for PAH between 200 ng/l and
12 mu g/l and for PCDD and PCDF between 20 pg/l and 1 ng/l. Usual puri
fication methods produce highly contaminated residues, which have to b
e treated by pyrolysis or are deposited again at a landfill. A better
way is to destruct these contaminants by UV/ozone treatment. The treat
ment of seepage water by UV-irradiation, ozone and UV/ozone is compare
d. Results show no significant effect during all treatments for PCB an
d PCDD/PCDF. The chlorinated phenols and PAH were mostly destroyed by
UV/ozone treatment more than 90 %. The pH value has no influence on th
e UV/ozone treatment of seepage water.