Removal Effect of CODcr Ammonia Nitrogen and Total Nitrogen of Rural Domestic Wastewater in Southern China by A2/O2 Process

DOI

10.2991/icsd-16.2017.62How to use a DOI?

Keywords

A2/O2 process; Domestic wastewater; CODcr, ammonia nitrogen and total nitrogen; Sediments; Removal effect

Abstract

Taking rural domestic wastewater in Southern China as the experimental object, the removal efficiency of CODcr, ammonia nitrogen and total nitrogen in different stages of the biofilm reactor and aeration conditions was studied by using the experimental simulation method in the A2/O2 process. The results showed that: First, this process is fast in biofilm culturing, but the removal efficiency of ammonia nitrogen and total nitrogen removal efficiency is not high. Biofilm culturing starts 17d or so, the removal efficiency of CODcr can reach more than 80%. Second, after the normal operation process, the removal efficiency of CODcr and ammonia nitrogen was stable by this device, CODcr average removal rate was 80%, the average ammonia removal rate was 75%, this process has good anti shock loading capability, and the device good stability. Third, in the process of 6h and 2h interval aeration conditions, ammonia removal efficiency was higher and more stable, had been able to reach in the "Urban Sewage Treatment Plant Pollutant Discharge Standard" level emission B standard for first class discharge standard, the removal efficiency of CODcr was better. Fourth, comprehensive energy consumption and removal efficiency, the best aeration conditions in this process was 6h aeration and 2h interval. Operating under such conditions, the minimum cost per ton of sewage treatment. New sewage process A2/O2 biofilm reactor designed to deal with the rural domestic wastewater in Southern China, which is characterized by less land occupation, low energy consumption, high pollutant removal efficiency, nitrogen removal function very well, simple management, the effluent can meet the discharge standard.

Copyright

© 2017, 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  - Li-Qiang Xu
AU  - Hai-Xia Yu
AU  - Jiang-Hua Yu
AU  - Huan Luo
AU  - Yuan-Long Zhang
PY  - 2016/12
DA  - 2016/12
TI  - Removal Effect of CODcr Ammonia Nitrogen and Total Nitrogen of Rural Domestic Wastewater in Southern China by A2/O2 Process
BT  - Proceedings of the 2nd 2016 International Conference on Sustainable Development (ICSD 2016)
PB  - Atlantis Press
SP  - 279
EP  - 285
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsd-16.2017.62
DO  - 10.2991/icsd-16.2017.62
ID  - Xu2016/12
ER  -