Warianty tytułu
Języki publikacji
Abstrakty
Przeprowadzono bakteriologiczne badania ścieków komunalnych z Gdańska i Gdyni przed i po ich biologicznym oczyszczeniu. Określono poziom zanieczyszczenia bakteryjnego (w odniesieniu do bakterii coli i coli typu kałowego, paciorkowców kałowych, gronkowców i pałeczek Salmonella) ścieków surowych i oczyszczonych oraz stopień redukcji zanieczyszczeń uzyskany w procesie oczyszczania ścieków.
The highest possible effectiveness of sewage treatment is of particular significance when the sewage is discharged into surface waters used for recreational purposes. The Gulf of Gdańsk, with its much frequented beaches along the shore, is the disposal reservoir for the wastewater from two large biological treatment plants collecting the sewage from Gdańsk and Gdynia. The purpose of this work was to perform bacteriological examination of the communal sewage from these two large agglomerations before and after their biological treatment. On that basis the degree of reduction of bacteriological contamination of sewage as a result of biological treatment was determined. The examination included determining of coliform and faecal coliform bacteria MPN (Most Probably Number), faecal streptococci index as well as Salmonella sp. and coagulase positive staphylococci. An extremely high level of bacterial contamination of raw sewage was found amounting from 9,3x1018 (Gdańsk) to 1,8x1020 (Gdynia) faecal coliform bacteria in 100cm3 of sewage and respectively from 5,6.105 to 1,8.106 faecal streptococci in 100 cm3 of sewage on average. It was also observed that the effectiveness of the sewage treatment plants is so high that it assures the level of reduction of bacterial contamination within the limits of 92% for staphylococci and streptococci to 99,999% for coliform bacteria. It was also pointed out that despite a very effective work of sewage treatment stations the level of contamination of treated sewage discharged into the surface waters is often high. Hence the necessity of verification of data concerning level of sewage contamination which are usually assumed in the project documentation.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Numer
Strony
155-164
Opis fizyczny
s.155-164,rys.,wykr.,tab.,bibliogr.
Twórcy
autor
- Instytut Medycyny Morskiej i Tropikalnej, 81-519 Gdynia, ul.Powstania Styczniowego 9B
autor
autor
Bibliografia
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-article-db2ae87f-4416-4cb3-af5f-569f0511bd62
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