| Issue |
E3S Web Conf.
Volume 248, 2021
2021 3rd International Conference on Civil Architecture and Energy Science (CAES 2021)
|
|
|---|---|---|
| Article Number | 01037 | |
| Number of page(s) | 4 | |
| Section | Chemical Performance Structure Research and Environmental Pollution Control | |
| DOI | https://doi.org/10.1051/e3sconf/202124801037 | |
| Published online | 12 April 2021 | |
Screening and application of microbial inoculants for sludge composting in expressway service area of northwest China
1 Key Laboratory of Traffic Industry of Highway Traffic Environmental Protection Technology, Beijing, 100032, China
2 Beijing Environmental Engineering Technology Co., Ltd., Beijing 100101, China
3 Beijing Engineering Technology Research Center for Comprehensive Treatment and Recycling of Urban Solid Waste, Beijing 100101 ;
4 Shuangzhi Environment and Development Technology Co., Ltd., Beijing 102200, China
* Corresponding author: fanhua@besgrd.com
Taking sludge in northwest China’s expressway service area as the research object, four dominant strains, including Bordetella sp. M05, Ochrobactrum sp. M06, Bacillus subtilis M07 and Staphylococcus sciuri M09, were obtained through specific screening. These microbes were prepared into inoculants and effectively promoted sludge composting. The time for the fermentation temperature of the composting process to reach 50°C was 3 days earlier than that of the control group. The high temperature (>50°C) lasted for 12 days and the highest temperature reached 63.5°C. After composting, the product was dark in color, free from odor, and the contents of organic matter, nitrogen, phosphorus and potassium increased by 44.1%, 125.9%, 311.1% and 269.2%, respectively, which made the composted product meet standards of GB/T 23486–2009 Sludge for Landscaping.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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