Sanitary-bacteriological and parasitological estimation of sewage sludges from chosen sewage treatment plants on the Mazurian Lake District and their utilization in agriculture

• Autorzy: Niewolak S. , Szelagiewicz M.
• Języki publikacji: EN

Abstrakty

EN

This work comprises the results of investigations on the amount of heterotrophic bacteria (mesophilic), bacteria showing the sanitary state (TC,FC,FS), anaerobic spore - forming bacteria (Clostridiumperfringens), pathogenic/ potentially pathogenic bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella spp.), filamentous fungi and yeasts and parasitic worms in sewage sludge at sewage treatment plants in Olsztyn, Olsztynek and Kętrzyn in the Mazurian Lake District. The number of FC, Clostridium perfringens and Salmonella as well as parasitic worms in the soils fertilized by 6.7 and 13.4 t/ha dry wt. of sewage sludge from deposit fields at sewage treatment plant in Olsztyn was also determined. The lowest degree of bacteriological contamination was found in sewage sludge from the sediment fields at the sewage treatment plant in Olsztyn, whereas the highest degree was found in sewage sludge from lagoons at thesewage treatment plant in Kętrzyn. The soils fertilized by sewage sludges from sediment fields at the sewage -treatment plant in Olsztyn contained 100 -100,000 times fewer FC and Clostridium perfringens and parasite worms than sewage sludge. There was a lack of pathogenic bacteria from group of Salmonella. The numbers of FC and Clostridium perfringens and parasitic worms in soils depended on the amount of sewage used in fertilization.This suggests preliminary hygienization of sewage sludges before they are used in agriculture.

Słowa kluczowe

EN

parasite; fertilization; agriculture; utilization; pathogen; soil; microorganism; sewage sludge; Mazurian Lakeland; organic fertilizer

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 1997
• Tom: 06
• Numer: 3
• Opis fizyczny: p.45-51,fig.,ref.

Twórcy

autor

Niewolak S.

• Olsztyn University of Agriculture and Technology, 10-957 Olsztyn-Kortowo, Poland

autor

Szelagiewicz M.