Application of Modified MSBR and Denitrifying Deep Bed Filter Processes in Upgrading and Reconstruction of WWTPs in Northwest Region
The final discharge water body of M urban wastewater treatment plant(WWTP)in northwest China takes the Yellow River as its main tributary.In order to actively respond to the requirements of the state council on ecological protection in the yellow river basin,the WWTP had been upgraded and reconstruted to address issues such as low effluent quality standards,poor adaptability to changes in water quality and quantity of the original biological treatment unit,and large amount of effluent floating slag.On the basis of the reconstruction and improvement of the original equipment,the use of urban sewage → coarse grid → sump → lifting pump→ fine grid → aeration grit tank(new)→ improved MSBR tank(transformation of the original CAST tank)→ intermediate lifting pump room(new)→ high-efficiency sedimentation tank(new)→ denitrification deep bed filter(new)→ contact disinfection tank → level A standard was discharged to the Weihe River process technology,the effluent standard of the WWTP is increased from class B to class A,and the treatment capacity of the WWTP is expanded from 60 000 m3/d to 100 000 m3/d.Through the analysis of the economic indices in the continuous and stable operation of the system for one year,it can be seen that the scheme has good economic benefits and can be used as a reference scheme for the upgrading and reconstruction of WWTP in Northwest China.
northwest regionYellow River Basinupgrading and reconstructionMSBRdenitrified deep bed filter(DDBF)
万方数据
维普
