Investigation of the emission of monocyclic aromatic hydrocarbons from a wastewater treatment plant at Lausanne (Switzerland) by differential optical absorption spectroscopy (DOAS)
| Autor: | Jimenez, Rodrigo, Iannone, Tiziana, van den Bergh, Hubert, Calpini, Bertrand, Kita, Dieter |
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| Předmět: |
103-65-1 (Benzene
5 100-42-5 (Benzene 3-dimethyl-) ethenyl-) 106-42-3 (Benzene arom compd monocyclic emission wastewater treatment plant Lausanne Switzerland 108-67-8 (Benzene 108-38-3 (Benzene 4-trimethyl-) air pollution monocyclic arom wastewater treatment plant Lausanne Switzerland ethyl-) 4-dimethyl-) 2-dimethyl-) 95-47-6 (Benzene 95-63-6 (Benzene propyl-) 100-41-4 (Benzene sewage sludge treatment arom compd monocyclic emission Lausanne Switzerland |
| Popis: | Recent research works show that wastewater treatment plants may contribute significantly to the total emission of volatile org. compds. (VOCs) in urban areas. In order to investigate this contribution, a measurement campaign was carried out during Sept., 1999, in the Lausanne, Switzerland, area. The concns. of monocyclic arom. hydrocarbons (MAHs) over a wastewater treatment plant at Lausanne were monitored by differential optical absorption spectroscopy (DOAS) and gas chromatog. with a flame ionization detector (GC-FID). An FID was used for monitoring the overall concn. of nonmethane hydrocarbons (NMHCs). The local meteorol. conditions were also measured. The concns. of benzene, toluene, ethylbenzene, xylenes, 1,2,4-trimethylbenzene, and phenol over the wastewater treatment plant as measured by DOAS and GC-FID are compared. In addn., based upon the results of a recent field expt., the impact of the oxygen interference on DOAS measurements of arom. compds. is addressed. The MAH concn. time series and its relation to that of NMHCs, as well as to the meteorol. conditions, are presented. The VOC release and prodn. phenomena involved in the wastewater and sludge treatment processes are analyzed using complementary measurements of arom. compds. in wastewater and gas processing streams. |
| Databáze: | OpenAIRE |
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