华电技术 ›› 2018, Vol. 40 ›› Issue (3): 74-76.

• 节能与环保 • 上一篇    

五段生物法工艺在城市污水厂提标改造中的应用

  

  1. 华电水务控股股份有限公司,北京〓100160
  • 出版日期:2018-03-25 发布日期:2018-06-07

Application of fivestage biological process in the upgrading of urban wastewater plant

  1. Huadian Water Holdings Company Limited, Beijing 100160, China
  • Online:2018-03-25 Published:2018-06-07

摘要:

天津市某污水厂二期设计规模为4.5万m3/d。生物处理采用A2O脱氮除磷工艺,出水执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A排放标准。本期提标改造工程将出水水质提升至天津市地方标准《城镇污水处理厂污染物排放标准》(DB 12/599—2015)中规定的A标准。总规模维持不变,改造工程将原有的A2O生物反应池改良为AAOAO(五段生物法)工艺,并新增碳源投加系统及菌种选择器。改造后脱氮除磷效果大幅提升,出水水质稳定达标。五段生物法无需新增占地、改造周期短、投资成本低、出水效果稳定,在我国城市污水厂升级改造中具有较大推广应用价值。

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Abstract:

The designed capacity of second phase project of a wastewater treatment plant in Tianjin is 4.5×104m3/d. A2O process for denitrification and desulfurization is adopted in the biological treatment process. The effluent quality meet the primary standard grade A of 〖WTBX〗Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant 〖WTBZ〗(GB 18918—2002).The upgrading and reconstruction project improves the effluent quality to meet the Tianjin local primary standard,〖WTBX〗Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant 〖WTBZ〗(DB 12/599—2015).As the capacity remains unchanged,the original A2O tank was modified to AAOAO process (fivestage biological process). Furthermore, carbon source addingand bioselectors devices were installed into the biological process. After reconstruction, denitrification and desulfurization were significantly promoted, and the effluent quality meet the discharge standard steadily. The fivestage biological process has great popularization and application value in upgrading and reconstruction of urban wastewater treatment plant due to its advantages of no additional land occupation, short reconstruction period, low investment cost and stable effluent quality.

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