污水厂扩建及提标多段强化脱氮改良A^2/O工艺工程实例

A WWTP Expansion and Upgrading Example with Improved A^2/O Process by Multi-stage Enhanced Denitrification

针对安徽某市污水处理厂出水常有不达标现象、处理规模增加和排放标准提高等问题,采用对一期生化池改造和二期扩建并增设深度处理设施等措施,确保出水水质达标。运行结果表明,污水厂采用多段强化脱氮改良A^2/O生化+混凝沉淀过滤工艺,出水可以稳定达到城镇污水处理厂污染物排放标准(GB18918-2002)一级A标准。

Because the effluent of a city WWTP in Anhui Province often couldn’t meet the standard,the treatment capacity of this WWTP increased,and the discharge standard improved,some measures were adopted to ensure the effluent could meet the standard,such as reforming the biochemical tank in Phase I Project,expanding and adding the deep treatment facilities in Phase II Project.The operation result showed that the effluent quality could stably meet Class One-A standard in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002) by this process.