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Assessment of Possibilities of Spreading of Bioaerosol from Different Technological Objects in Small Sewage Treatment Plants

Ewa ZABŁOCKA-GODLEWSKA

Ewa ZABŁOCKA-GODLEWSKA

Assoc. Prof.; Department of Air Protection, Faculty of Energy and Environmental Engineering, Silesian University of TechnologyGliwice, Poland
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ZABŁOCKA-GODLEWSKA, Ewa
, 
Wioletta PRZYSTAŚ

Wioletta PRZYSTAŚ

Assoc. Prof.; Department of Air Protection, Faculty of Energy and Environmental Engineering, Silesian University of TechnologyGliwice, Poland
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PRZYSTAŚ, Wioletta
 et 
Magdalena ŻAK

Magdalena ŻAK

Assoc. Prof.; Department of Air Protection, Faculty of Energy and Environmental Engineering, Silesian University of TechnologyGliwice, Poland
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ŻAK, Magdalena
  
09 août 2022
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Publié en ligne: 09 août 2022
Pages: 177 - 186
Reçu: 28 mars 2022
Accepté: 09 mai 2022
DOI: https://doi.org/10.2478/acee-2022-0025
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© 2022 Ewa ZABŁOCKA-GODLEWSKA et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

The number of mesophilic bacteria [cfu/m3] in different sampling points (average value from all STPs with SD)
The number of mesophilic bacteria [cfu/m3] in different sampling points (average value from all STPs with SD)

Figure 2.

The number of psychrophilic bacteria [cfu/m3] in different sampling points (average value from 5 STPs with SD)
The number of psychrophilic bacteria [cfu/m3] in different sampling points (average value from 5 STPs with SD)

Figure 3.

Contribution of pigmented bacteria [%] in the sum of mesophilic and psychrophilic bacteria in different sampling points (average value from 5 STPs)
Contribution of pigmented bacteria [%] in the sum of mesophilic and psychrophilic bacteria in different sampling points (average value from 5 STPs)

Figure 4.

The number of Escherichia coli and Pseudomonas fluorescens [cfu/m3] in different sampling points (average value from 5 STPs with SD)value from 5 STPs)
The number of Escherichia coli and Pseudomonas fluorescens [cfu/m3] in different sampling points (average value from 5 STPs with SD)value from 5 STPs)

Figure 5.

The number of mold fungi [cfu/m3] in different sampling points (average value from 5 STPs with SD)SD)value from 5 STPs)
The number of mold fungi [cfu/m3] in different sampling points (average value from 5 STPs with SD)SD)value from 5 STPs)

Microbiological air analysis – growth media and culture conditions

Detected microorganisms Growth media Incubation temperature [°C] Duration of incubation [h]
Mesophiles nutrient agar (BTL) 37 24-48
Psychrophiles nutrient agar (BTL) 26 48-96
pigmented bacteria (counted on psychrophiles plates) nutrient agar (BTL) 26 48-96
Escherichia coli selective agar Endo (BTL) 37 24-48
Pseudomonas fluorescens selective Pseudomonas Agar Base with supl. (Oxoid), 35 24-48
Streptococcus faecalis SF agar (Difco) 45 24-48
mold fungi Czapek agar (BTL) 26 72-96

The list of used abbreviations of monitored technological objects and background

Abbreviation Technological object
TS transfer stations
G grits
PC primary clarifiers (open)
ASC activated sludge chambers (open with turbin system of aeration)
SC secondary clarifiers (open)
OFC open fermentation chambers
STT sludge thickening tanks
SP sedimentary plots
WW windward
LW leeward

The number of different groups of bacteria (range min-max in CFU/m3)_ M – mesophiles; P – psychrophiles, PB – pigmented bacteria; E – E_ coli; Ps – P_ fluorescens; F – mold fungi (the highest microorganisms number are marked as grey cells)

Sampling point Group of microorganism
M P PB E Ps F
TS 10 393-505 428-882 445-577 0-7 0-4 806-907
TS15 66-302 459-604 223-236 0 0 486-1181
G4 229-865 446-1323 347-812 0-20 0-9 727-786
G45 118-222 530-1017 172-797 0 0 446-826
G50 66-83 144-511 39-289 0 0 275-1284
PC10 255-340 626-711 226-379 0-11 0-6 4468-5459
PC40 26-511 157-301 92-249 0 0 786-1088
PC45 59-88 164-492 59-364 0 0 275-1284
ASC10 498-806 842-1296 341-629 6-22 7-16 917-1127
ASC20 197-368 276-722 118-223 0-12 0-6 197-682
ASC25 149-265 382-828 170-181 11-42 11-12 961-2166
ASC35 13-92 105-393 26-249 0-4 0-2 459-1808
ASC75 66-83 144-511 39-289 0 0 275-1284
SC10 119-361 316-733 175-293 6-19 6-8 2002-2663
SC20 149-265 382-828 149-265 0-8 0 1561-2166
SC45 66-141 214-572 92-183 0-4 0 1023-1982
OFC5 85-212 159-828 85-212 4-12 0-4 1465-2930
OFC10 32-43 181-361 96-127 0 0 892-1051
STT5 13-92 105-393 26-249 0 0 459-1808
STT10 182-1127 223-2188 118-996 0-8 0 262-1638
SP5 74-191 149-417 64-117 0 0 4768-5579
SP15 131-276 394-983 131-353 0 0 381-1037
SP20 197-223 321-747 249-524 0 0 472-708
SP25 170-262 328-485 282-445 0-7 0 550-1212
WW 32-117 255-276 195-227 0 0 606-1280
LW 83-196 414-828 106-210 0 0 1019-2497
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