SHI Lan-lan,ZHANG Bao-lin,WU Yun-sheng,et al.Upgrading and Application of Biological Aerated Filter in Upgrading of Shenzhen Hengling Wastewater Treatment Plant[J].China Water & Wastewater,2020,36(14):104-108.
Upgrading and Application of Biological Aerated Filter in Upgrading of Shenzhen Hengling Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
14
Page:
104-108
Column:
Date of publication:
2020-07-17
- Abstract:
- The phase Ⅱ project of Shenzhen Hengling wastewater treatment plant (400 000 m3/d) adopted the enhanced pretreatment, denitrification, nitrification two-stage biological aerated filter and ultraviolet disinfection process, and the original effluent standard was required to reach the first level A. According to the request of Guangdong Provincial Environmental Protection Department, a quasi Ⅳ standard upgrading project was conducted in 2018. In order to solve the operation problems of high hydraulic and solid loading of pretreatment, filter water loss due to breakage and hardening of filter material, and uneven aeration, the upgrading project adopted the new filter backwash water treatment process to decrease the load of pretreatment. The main process included the renovation of the two-stage aeration filter and the construction of a new denitrification filter and a new high load coagulation sedimentation tank to realize the deep nitrogen and phosphorus removal requirements. The new advanced treatment section had advantages of high design load, low occupation of land, reliable treatment performance and advanced technology, which was suitable for land-restricted upgrading projects.
Last Update:
2020-07-17