The paper deals with bacteriological assessment of crude sludges and sludges deposited on a drying bed. Sludge sources from municipal sewage treatment plant appeared to contain microbiological pollutants which exclude a direct sewage sludge management. Numerous bacterial species occurred in raw sludges and deposited sludges can create risk for people and animals health. The crude sludge deposition by one year don't contribute to complete hygienization because no eliminate in satisfactory step presented microorganisms.
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