Study on Biotoxicity of Sludge Stabilized by Sludge Drying Reed Bed
- 10.2991/iceep-18.2018.81How to use a DOI?
- Sludge drying reed bed; Excess sludge; Luminescent bacteria; Biological toxicity
The sources of urban sewage are complex that lead to harmful substances such as heavy metals et al existing in the excess sludge. If the sludge is directly discharged into the environment without treatment, it will cause secondary pollution to the environment. The paper used the photogenic bacteria to test the changes of the biotoxicity of the sludge stabilized by sludge drying reed bed at different times under different drying conditions, investigated the efficacy of the toxic substances degradation and transformation in the process of sludge stabilization by reed bed comparing with the conventional drying bed. The results show that the biotoxicity of stabilized sludge in the reed bed under the condition of ventilation reduced more comparing to the other conditions; meanwhile, the biological toxicity of the sludge in the bottom layer changed from high toxicity to low toxicity. As a result, the sludge stabilized by reed bed can significantly reduce its ecological risk and improve its agricultural safety.
- © 2018, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Yao-bo Liu AU - Yu-bo Cui AU - Zhuma Luosang AU - Xin Li AU - Wen-ju Yang AU - Jun-yu Liang PY - 2018/09 DA - 2018/09 TI - Study on Biotoxicity of Sludge Stabilized by Sludge Drying Reed Bed BT - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018) PB - Atlantis Press SP - 473 EP - 477 SN - 2352-5401 UR - https://doi.org/10.2991/iceep-18.2018.81 DO - 10.2991/iceep-18.2018.81 ID - Liu2018/09 ER -