Design of Upgrading and Reconstruction of Large Biological Aerated Filter in Wastewater Treatment Plant
Shenyang Xiannv River Wastewater Treatment Plant(WWTP)is a large-scale WWTP using the biological aerated filter.Its treatment scale is 400 000 m3/d.In the upgrading and reconstruction project,the existing secondary biological aerated filter is reconstructed into tertiary biological filter with denitrification function.And the settling tank with sand is used as advanced treatment unit,which makes the effluent quality is improved from the Class Ⅱ standard to the Class Ⅰ A standard specified in Discharge Standard of Pollutants from Municipal Wastewater Treatment Plant(GB 18918-2002).At the same time,through the construction of emergency treatment system,the expected goal of not stopping construction and not lowering emission standards has been achieved.
biological aerated filterupgrading and reconstructionnot stopping construction
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