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Assessment of possibilities of spreading of bioaerosol from different technological objects in small sewage treatment plants

Zabłocka-Godlewska Ewa, Przystaś Wioletta, Żak Magdalena

Architecture Civil Engineering Environment

2022

Vol. 15, no. 2

177--186

The Covid-19 pandemia increased the attention of the world community to air biocontamination. Sewage treatment plants (STPs) generate a bioaerosol during different technological operations. Research aimed to estimate the range of bioaerosol emission from different technological objects of 5 small STPs. Such knowledge is very important for risk assessment, monitoring programs and pollution limitation. The sedimentation method was used for the detection of mesophiles, psychrophiles, Escherichia coli, pigmented bacteria, Streptococcus faecalis, Pseudomonas fluorescens, and mold fungi. The highest level of psychrophiles and mold fungi (> 1000 cfu/m3) was detected in points located near activated sludge chambers, sludge thickening tanks, and secondary clarifiers. The mesophiles (>500 cfu/m3) and E. coli aren’t a normal component of air microflora, but were detected in all measurement points, especially near a pomp station (inflow), grit, activated sludge, sludge thickening chambers. At the points located at the leeward, the number of microorganisms was higher than in the windward. The research results indicate the necessity of constant monitoring of the STP impact on the air quality.

Ocena jakości powietrza w budynkach

Basińska M, Pańczak M

Fizyka Budowli w Teorii i Praktyce

2011

T. 6, nr 4

5--8

W artykule przedstawiono analizę zmienności parametrów mikroklimatu w budynku pasywnym Politechniki Poznańskiej oraz w dwóch budynkach mieszkalnych. Pomiary przeprowadzono w miesiącu grudniu 2010 roku. Badaniom podlegały parametry fizyczne oraz mikrobiologiczne powietrza. Otrzymane wyniki porównano z obowiązującymi przepisami.

The article attempts to assess the research conducted in the experimental facility of Poznań University of Technology - the passive house and in two one - family houses. Measurement was made in December 2010. The research concerns microbiological contamination of air inside the buildings. The identified mesophilic and psychrophilic bacteria, Staphylococcus, Actinomycetales, Pseudomonas fluorescens and microscopic fungi have been compared to the statutory standards.