E3S Web Conf.
Volume 136, 20192019 International Conference on Building Energy Conservation, Thermal Safety and Environmental Pollution Control (ICBTE 2019)
|Number of page(s)||5|
|Section||Monitoring and Treatment of Water Pollution|
|Published online||10 December 2019|
MBBR+two-stage AO in upgrading and rebuilding project Of a sewage treatment plant in north China
1 West Anhui University, Architecture and Civil Engineering Department, 237012 Lu’an, China
2 Planning and Architectural Design Research Institute of Hunan City University, Beijing Haidian Branch, 100089, Beijing, China
* Corresponding author: email@example.com
A sewage treatment plant is located in the middle of Inner Mongolia. There is a large amount of slaughtering wastewater in the influent with high COD, SS, low annual temperature, poor nitrogen removal effect, and the effluent quality is only grade B. In order to solve the above problems, A\A\O-MBBR + high efficiency sedimentation tank continuous sand filter process was adopted to establish a new anaerobic tank and a first stage AO-MBBR bioreactor. The selection tank and partial oxidation ditch were transformed into the second stage A pool (anoxic pool), and the remaining part of the existing oxidation ditch was transformed into the second stage O pond (aerobic pool), which further removed phosphorus and reduced the SS in the sewage, and solved the problem of low temperature biological treatment in winter in the north of China. The quality of the effluent reached level A after the upgrading.
© The Authors, published by EDP Sciences, 2019
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