E3S Web Conf.
Volume 44, 201810th Conference on Interdisciplinary Problems in Environmental Protection and Engineering EKO-DOK 2018
|Number of page(s)||9|
|Published online||03 July 2018|
Microbiological assessment of sewage sludge hygienization in the process of composting with the use of Salmonella Enteritidis
UTP University of Science and Technology, Faculty of Animal Breeding and Biology, Department of
Animal Hygiene and Microbiology of the Environment, Mazowiecka 28, 85-084 Bydgoszcz, Poland
* Corresponding author: email@example.com
The aim of the study is to assess effectiveness of sewage sludge composting efficiency oil the basis of survival of Salmonella Enteritidis bacteria. Carriers containing a strain of S. Enteritidis were added to three layers of a compost pile made of dehydrated sewage sludge from a mechanical-biological wastewater treatment plant and wheat straw. The maximum time of the bacteria survival was established which was found to be the longest in the bottom part of the heap and was 58 days, whereas in the top layer of the pile the survival time of the microorganisms was the shortest, which is 49 days. In the thermophilic stage the highest generated temperatures were from 66 to 73°C for a period of 7 days. It found reflection in the fastest rate of Salmonella bacilli inactivation. A thermophilic stage was also found in the middle layer of the pile which lasted for 5 days throughout which period the temperature ranged from 66 to 72°C. Temperatures in the bottom part of the pile were found to be lower, from 30 to 61°C, whereas temperature above 60°C was reported only for 2 days.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.