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1

Sanitary and bacteriological evaluation of the Southern part of Leginski Lake for recreational purposes

100%
Lewandowska D., Zmyslowska I., Filipkowska Z.
Polish Journal of Environmental Studies
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2000
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tom 09
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nr 4
Evaluation of water in the southern part of Leginski Lake and its usefulness for recreation was carried out on the basis of the following criteria: Kohl 1975 and Kavka 1987 in Albinger's modification; U.S Department of the Interior, Federal Water Pollution Control Administration; and the European Committee for the Quality of Water for Bathing Purposes. Research work was aimed at determining the number of bacteria indicatory of pollution (Total Viable Count 20°C) and sanitary state (FC and FS). Samples of water and bottom sediments were examined at three different sites. The results revealed that water in the southern part of Leginski Lake can be used for recreational purposes. The majority of samples examined was classi­fied as clean or little polluted. A higher degree of water loading was found only at the outlet of the stream coming from biological ponds of the local water-treatment plant.
2

Effectivenes of indicatory microorganism removal on trickling filter with biofilm in magnetic field

100%
Filipkowska Z., Krzemieniewski M.
Polish Journal of Environmental Studies
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1998
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tom 07
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nr 4
The objective of study was to define the removal rate of the indicator microorganisms on various types of trickling filters with regard to the influence of: magnetic stream and electric current passage, on the effectiveness of microorganisms adsorption onto the media. The hydraulic loading in the first eight variants were changing, variants 9-14 were peformed at a constant loading. The study results have indicated a positive influence of the extra energy sources i. e. a magnetic stream and electric current on the process of indicatory microorganisms removal from the waste water.
3

Total viable count and concentration of enteric bacteria in bottom sediments from the Czarna Hancza River, Northeast Poland

84%
Niewolak S.
Polish Journal of Environmental Studies
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1998
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tom 07
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nr 5
Studies were carried out to determine counts of TVC 20oC, TVC 37oC, TC, FC, FS and Clustridium perfringens in bottom sediments of the Czarna Hancza River, from about 1 cm layer, at 10 stations located in Suwalki region (stations 1 and 2), in the villages Sobolewo (stations 3 and 4), the old river bed of the Czarna Hancza and its intlow to Lake Wigry (stations 5 and 6), and in the villages Czerwony Folwark, Mackowa Ruda, Buda Ruska and Wysoki Most (stations 7-10) east of Lake Wigry. Bottom sediments from stations 1-4 and 7-l0 were mostly sandy, while at stations 5 and 6 they dominated by silty clay. Studies were carried out in 1995 and 1996, at monthly intervals with the exception of winter. Water was examined at the same time. All groups of indicatory bacteria were l00-1000 times more numerous in the bottom sediments than in water. They were usually least numerous in sandy bottom sediments, especially in the villages Buda Ruska and Wysoki Most (stations 9 and 10), and the highest in silty clay sediments in the region of the old Czarna Hancza bed and its inflow to Lake Wigry (stations 5 and 6). Minimal and maximal counts of indicatory bacteria were noted in different months upon particular sampling stations. Only sometimes curves of their numbers corresponded to the respective curves of bacteria counts in water. It is suggested that sanitary and bacteriological studies of water should be supplemented by respective studies of the surface layer of bottom sediments.
4

The avaluation of the contamination degree and the sanitary and bacteriological state of the waters in the Czarna Hancza River in the Region of Suwalki and Wigry National Park

84%
Niewolak S.
Polish Journal of Environmental Studies
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1998
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tom 07
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nr 4
This paper evaluates contamination and sanitary and bacteriological states of the waters in the Czarna Hancza River in the region of Suwalki and Wigry National Park, and treated wastes coming from an urban sewage treatment plant. Microbiological examinations were carried out every month, in three annual cycles, in 1994-1996. Water samples were taken at 11 stations situated in the most characteristic places above Suwalki, below Suwalki, before inflow of treated wastes coming from the sewage treatment plant, in Sobolewo and at the mouth of the Czarna Hancza River to Wigry Lake, besides the tract from Czerwony Folwark to Wysoki Most towards the east of Wigry Lake. The following microbiological indices were examined: TVC 20oC, TVC 37oC, TC, FC, FS, Clostridium perfringens as well as numerical ratio FC:FS. The results of the examination of the number of respective indicator bacteria were compared with the purity criteria, organic substance loading and excrement material and water usefulness for recreation. Unsignificant contamination of the Czarna Hancza River was observed in Stary Brod not far from Suwalki and in Czerwony Folwark, Mackowa Ruda and Buda Ruska in the eastern part of Lake Wigry, significant and/or strong water contamination of this river was noticed on the track from Suwalki to its mouth to Wigry Lake. The sources of the contamination were shown: point (sewages) and spacious (catchment) and leakage from cesspools in Sobolewo. A significant decrease of the number of the examined indicator bacteria of the contamination degree (TVC 20oC, TVC 37oC) of this part of the river in 1995 and 1996 was observed. The usefulness for bathing the examined fragment of the River Czarna Hancza above Suwalki and the fragment from Czerwony Folwark to Wysoki Most towards the east from Wigry Lake was presented.
5

Aktywnosc antagonistyczna bakterii fermentacji mlekowej z gatunku Lactobacillus plantarum

67%
Kraszewska J., Wzorek W., Sztando E., Raczynska-Cabaj A.
Acta Scientiarum Polonorum. Technologia Alimentaria
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2005
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tom 04
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nr 1
Celem pracy było określenie antagonlstycznych właściwości 6 szczepów z gatunku Lactobacillus plantarum, używanych przez autorów w badaniach nad bioaktywnym napojem słodowym. Zastosowano metodę studzienkową i słupkową oraz zbadano możliwość produkcji przez badane szczepy nadtlenku wodoru. Antagonizm bakteryjny określano w stosunku do wybranych bakterii gram-dodatnich i gram-ujemnych oraz drożdży. Stwierdzono, że badane szczepy nie mają zdolności produkcji nadtlenku wodoru. Wszystkie szczepy L. plantarum hamują wzrost stosowanych bakterii wskaźnikowych, a powstałe strefy zahamowania wzrostu są prawdopodobnie wynikiem produkcji kwasu mlekowego przez bakterie antagonistyczne. Badane bakterie mlekowe nie wykazują inhibicji wzrostu drożdży. Zaobserwowano również zróżnicowany poziom wrażliwości wśród mikroorganizmów wskaźnikowych należących do tego samego rodzaju lub gatunku. W metodzie słupkowej stwierdzano większe strefy zahamowania wzrostu niż w metodzie studzienkowej.
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