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1

Municipal wastewater treatment plant with activated sludge tanks aerated by CELPOX devices as a source of microbiological pollution of the atmosphere

100%
Filipkowska Z., Janczukowicz W., Krzemieniewski M., Pesta J.
Polish Journal of Environmental Studies
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2002
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tom 11
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nr 6
This paper characterizes the influence of a wastewater treatment plant with activated sludge aerated by CELPOX devices on the microbiological properties of the air at the plant grounds and in the vicinity. Field studies by the sedimentation method were carried out in seven measurement series in 2001. Sampling posts were each time set with regard to the current meteorological conditions like wind speed and wind direction. Microbiological analyses were comprised of: heterotrophic bacteria at 37şC and 26şC, hemolytic bacteria at 37şC and 10şC, staphylococci mannitol-fermenting and non-fermenting, Escherichia coli, coliforms Pseudomonas, enterococci, actinomycetes, yeasts and moulds. The results indicate that generally - in accordance with the Polish Standards [1,2] the air at the plant grounds and in its vicinity was not polluted. However, few spots (mostly in some distance from the plant) were detected where a group of microorganisms was present in increased numbers which has qualified the air as polluted. Biological aerosols from the activated sludge tanks were not generated in considerable amounts, which was confirmed by the absence or small number of faecal bacteria (coliforms, enterococci), absence of mannitol-fermenting straphylococci and typical water-sewage bacteria of the Pseudomonas fluorescens. The main sources of microbiological pollution were the grit removal chamber and the secondary settlers.
2

Preharvest food safety in the XXI century

100%
Robbins K. R.
Zeszyty Naukowe. Przegląd Hodowlany
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1997
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tom 33
3

Microbiological air pollution in the surroundings of the waste water treatment plant with activated-sludge tanks aerated by horizontal rotors

84%
Filipkowska Z., Janczukowicz W., Krzemieniewski M., Pesta J.
Polish Journal of Environmental Studies
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2000
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tom 09
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nr 4
Wastewater treatment plants affect the environment in many different ways. It can be assumed that the intensity and range of microbiological emission is the crucial factor in determining the range of restricted-usage zone. This paper presents emission levels of microbiological pollutants from the wastewater treatment plant in Bartoszyce, Poland. It is a new plant with multifunctional activated-sludge tanks where wastewater is aerated by horizontal-axis aerators. The study has shown that aeration tanks constitute a significant source of biological aerosols emission. Considerably smaller amounts of microorganisms are emitted into the atmosphere from wastewater-collection posts and secondary settling tanks.
4
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Obliczeniowe prognozowanie wzrostu mikrogrzybów w budynkach mieszkalnych

67%
Radon J., Gryc A., Sadlowska A.
Acta Scientiarum Polonorum. Architectura
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2009
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tom 08
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nr 1-2
W pracy przedstawiono obliczeniowy, biohigrotermiczny model wzrostu mikrogrzybów opracowany w Instytucie Fraunhofera Fizyki Budowli w Niemczech oraz program komputerowy o nazwie WUFI+ zbudowany przy udziale autora referatu. Program ten umożliwia obliczenie niestacjonarnego przebiegu temperatury i wilgotności na powierzchni przegród oraz oszacowanie na tej podstawie zagrożenia porażenia mikrogrzybami. Wykonano przykładowe obliczenia dla typowego budynku jednorodzinnego z wymaganą i ograniczoną, w celu zaoszczędzenia energii, wentylacją. Porównano przewidywany stopień zagrożenia mikrogrzybami dla obydwu tych przypadków.
5

May a cormorant colony be a source of coliform and chemical pollution in a lake?

67%
Klimaszyk P.
Oceanological and Hydrobiological Studies
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2012
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tom 41
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nr 1
6

A pilot study on anthropogenic faecal pollution impact in Bahir Dar Gulf of Lake Tana, Northern Ethiopia

67%
Goshu G., Byamukama D., Manafi M., Kirschner A. K. T., Farnleitner A. H.
International Journal of Ecohydrology and Hydrobiology
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2010
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tom 10
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nr 2-4
The anthropogenic effect on faecal and chemical pollution at Bahir Dar Gulf of Lake Tana, Ethiopia was investigated in the period of October 2006 to February 2007. Faecal and physicochemical pollution levels were significantly increased and clearly discernible in the Bahir Dar Gulf locations as compared to presumptively anthropogenic uninfluenced reference locations near the outlet of the Blue Nile River of Lake Tana. One directly sewage influenced lake site at Bahir Dar Gulf was found to be excessively faecally polluted. The total pooled data set from the study for faecal coliforms, Escherichia coli and Clostridium perfringens spores ranged from not detectable (n.d.) to log 6.2 CFU, n.d. to log 6.1 CFU and n.d. to log 1.7 CFU per 100 ml, respectively. A high variation was also observable for the physicochemical parameters including the spectral absorption coefficient at 254 nm, ammonia, nitrite, nitrate, total dissolved solids, total suspended solids and pH values. Although the data have to be considered preliminary, it strongly points to the need for systematic water quality monitoring of Lake Tana and its potential impact sources. This is all the more important as the lake is the largest freshwater body in the country serving a multipurpose role and being identified as a growth corridor of the country.
7
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Effect of galliform birds on microbial pollution of soil and water in a chosen agro-tourist farm

67%
Jozwik M., Trawinska B., Kowaleczko M.
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
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2009
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tom 27
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nr 1
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