呼和浩特市某污水处理扩建提标改造工程设计

Design of Expansion and Upgrading Project of a Wastewater Treatment Plant in Hohhot City

呼和浩特市某污水处理工程规模较大,分四期扩建提标改造。污水处理采用A^2/O、MBBR工艺,深度处理采用硝化反硝化生物滤池、浸没式超滤膜工艺,出水水质需达到地表水Ⅴ类水质标准;污泥采用浓缩、厌氧消化及脱水处理工艺,以实现减量化、稳定化、无害化及资源化。该工程对当前污水处理项目扩建提标改造的工艺选用具有指导意义。

The capacity of a wastewater treatment plant in Hohhot was large, and the expansion and upgrading were performed in four phases. A^2/O process and MBBR were used for wastewater treatment. The nitrification and denitrification filter and immersed ultrafiltration membrane were used for advanced treatment, and the effluent quality could meet the class V criteria in the surface water standard.The concentration, anaerobic digestion and dewatering processes were used for sludge treatment, and sludge reduction, stabilization, harmless and resource utilization were achieved. It could be a guidance for the process selection for expansion and upgrading of the current wastewater treatment projects.