TIANHai-cheng,YANGXi-kai,JIAOWen-hai,et al.Application of AAOA-MBR Process in Jinan Dongkezhan Underground Wastewater Treatment Plant[J].China Water & Wastewater,2023,39(22):78-83.
Application of AAOA-MBR Process in Jinan Dongkezhan Underground Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第22期
Page:
78-83
Column:
Date of publication:
2023-11-17
- Abstract:
- The design scale of Jinan Dongkezhan wastewater treatment plant is 10×104 m3/d, and the key process is AAOA-MBR. The daily average values of BOD5, COD, NH3-N, TP and other indicators in the effluent is better than the class Ⅳ limits specified in Environmental Quality Standards for Surface Water (GB 3838-2002), and the water content of excess sludge is less than 65% after treatment by mechanical thickening and high pressure diaphragm filter press. The limitation of land use is overcome and the requirements of high standard landscape environment are achieved by adopting the high-load MBR process and overlapping the structure up and down and co-building the wall underground. The total footprint area of the project is only 2/5 of the value specified in Shandong Province Construction Land Control Standards (2019 edition), and the underground box covers an area index of only 0.2 m2/(m3·d-1), which is lower than other underground sewage treatment plants in China. The flood risk caused by excess sewage entering the box is prevented by setting the quick-closing gate and the emergency pumping house, and the underground box is free from the threat of flood by raising the floor and setting the drainage pump room. In the construction of the foundation pit, the scheme of proper slope in the upper part and pile anchor support in the lower part is adopted, open channel and well points are constructed for construction drainage while water curtain and recharge well are also set up, which jointly ensure the safe operation of the water transmission pipeline and high voltage tower around the foundation pit.
Last Update:
2023-11-17