Study on Property of Gel-embedded Nitrobacteria Carrier and Its Application in Treating Urban Sewage

DOI

10.2991/icaees-15.2015.178How to use a DOI?

Keywords

property; carrier; application; urban sewage

Abstract

The diffusion behavior mechanical performance activation and biological property of gel-embedded nitrobacteria carrier LQ-1 were measured, and its application in the treatment of urban sewage was studied by pilot experiment. The results show that the interpenetrating holing-through structure (about 5 m) is formed in the immobilized nitrifying bacteria carrier. When the compression rate is 85% the compressive stress reaches 0.49 MPa. More than 95% of the diffusion process can be completed in 10 minutes. The optimal activation time of immobilized carrier is 13d under suitable temperature, and a higher biological activity can be achieved after activation at low temperature (<10 ). Reducing the microbial content, the property of carrier above can still be obtained. The activation time of gel-embedded nitrobacteria carrier in pilot experiment is no more than 11d, and the system can achieve qualified operation at low sludge concentration. The effluent concentration of NH3-N is below 1 mg/L with removal rate more than 99% by using the activated carrier under conditions as temperature 13~15 , influent loading 72.5 m3/d (1.45 times of design value), adding ratio of carrier 12%, Do about 5 mg/L, which reveal that carrier is conducive to the upgrading and reconstruction of municipal wastewater treatment plant.

Copyright

© 2015, 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/).

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TY  - CONF
AU  - Jingzhi Zhang
AU  - Xuelian Zhao
AU  - Jinquan Liu
AU  - Xiangshun Jing
AU  - Kai Wang
AU  - Jiane Zuo
PY  - 2015/07
DA  - 2015/07
TI  - Study on Property of Gel-embedded Nitrobacteria Carrier and Its Application in Treating Urban Sewage
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 962
EP  - 970
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.178
DO  - 10.2991/icaees-15.2015.178
ID  - Zhang2015/07
ER  -