Microorganisms in the air over wastewater treatment plants

• Autorzy: Kruczalak K , Olanczuk-Neyman K.
• Języki publikacji: EN

Abstrakty

EN

We present the results of investigations of microorganisms present in aerosol emitted by selected devices of two mechanical-biological wastewater treatment plants (“Debogorze” and “Gdańsk-Wschód”). In 2002, 5 series of measurements were conducted at each of the plants. The samples of air were collected by means of sedimentation method (PN-89/Z-04008/08) and by means of filtration method, using an air sampler produced by Merck. Apart from measurements of microbiological analyses, consisting of determinations of the total number of psychrophillic and mezophillic bacteria, manitol-positive and manitol-negative staphylococcus, hemolysing staphylococcus, Pseudomonas fluorescens, coliform bacteria and the number of spores of phycomycetes, weather conditions were also monitored. The most numerous microorganisms in the monitored air were psychrophillic bacteria and spores of phycomycetes. The number of psychrophillic bacteria varied in the wide range from 14 to 5255 CFU/m3, the number of mezophillic bacteria changed from 1 to 1324 CFU/m3, the number of staphylococcus – from 1 to 150 CFU/m3, the numbers of Pseudomonas fluorescens and the coliforms varied from a few to 50 CFU/m3 and the spores of phycomycetes varied from a few to 5,250 CFU/m3 of air (collected by means of Merck air sampler). It was found out that in both plants the main sources of microorganisms were sludge recirculation chambers and sand traps. The air around aeration chambers of activated sludge contained similar numbers of microorganisms as the background. It was proved that the sampling method is of critical effect on measurement results. The number of microorganisms detected in the samples collected by means of sedimentation method was by one order of magnitude higher than in the samples collected by means of filtration method (using air sampler), allowing for strict control of the filtered air volume.

Słowa kluczowe

EN

aerosol; air; microorganism; waste water treatment plant

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2004
• Tom: 13
• Numer: 5
• Opis fizyczny: p.537-542,fig.,ref.

Twórcy

autor

Kruczalak K

• Technical University of Gdansk, Narutowicza 11-12, 80-952 Gdansk, Poland

autor

Olanczuk-Neyman K.

Bibliografia

• 1. KRZYSZTOFIK B. Microbiology of the air (in Polish). Warszawa PWN, 1977.
• 2. BAUER H., FUERHACKER M., ZIBUSCHKA F., SCHMID H., PUXBAUM H. Bacteria and fungi in aerosols generated by two different types of wastewater treatment plants Water Research 36 (16), 3965, 2002.
• 3. ORSIN M., LAURENTI P., BONNTI F., ARZAN D., IANNf A., ROMANO-SPICA V.A molecular typing ap­proach for evaluating bioaerosol exposure in wastewater treatment plant workers Water Research 36 (5), 1375, 2002.
• 4. CARDUCCI A., TOZZI E., RUBULOTTA E., CASIN B., CANTIAN L., ROVIN E., MUSCILLO M., PACINI R. Assessing airborne biological hazard from urban wastewater treatment Water Research 34 (4), 1173, 2000.
• 5. PETRYCKA H., GODLEWSKA-ZABLOCKA E., KOLASA M. Microorganisms in the atmospheric air in the wastewater treatment plant area in Tychy-Urbanowice (in Polish). Gaz, woda i technika sanitarna 8, pp. 272-74, 1995.
• 6. MELBOSTAD E., EDUARD W., SKOGSTAD A., SAND- VEN P., LASSEN J., SOSTRAND P., HELDEL K. Ex­posure to bacterial aerosols and work-related symtoms in sewage workers. Ind. Med 2, 59, 1994.
• 7. WOODCOCK A. Brusting bubbles and air pollution. Sew­age Ind Wastes 27, 1189, 1955.
• 8. BLANCHARD D. C., SYZDEK L. Water-to-air transfer and enrichment of bacteria in drops from bursting bubbles. Appl. Environ. Microbiol., 43, 1001, 1982.
• 9. OLANCZUK-NEYMAN K., JANKOWSKA K., KRUCZA­LAK K. Indicatior bacteria sources and marine coastal water quality of the Puck Bay VII Intern. Symposium on 'Water Management and Hydraulic Engineering', pp. 349-355, 2001.
• 10. OLAŃCZUK-NEYMAN K., STOSIK-FLESZAR H., MIKOŁAJSKI S. Evaluation of Indicator Bacteria Removal in Wastewater Treatment Processes Polish. Jour. of Environm. Stud. 10 (6), 457, 2001.
• 11. POLISH REGULATION
• 12. OSSOWSKA-CYPRYK K. Evaluation of the atmospheric air pollution in the area of industrial wastewater treatment plant using indicator microorganisms (in Polish). Gaz, woda i technika sanitarna nr 5, 105, 1991.
• 13. KRUCZALAK K., OLAŃCZUK-NEYMAN K, MARKS R. Airborne microorganisms fluctuations over the Gulf of Gdańsk coastal zone (Southern Baltic) Polish. Jour. of Environm. Stud. 11, (5), 531, 2002.