MBBR工艺中流化推流器的选用案例分析

Selection Case Analysis of Flow Thruster in MBBR Process

锡林浩特污水处理厂因实际进水中纳入大量屠宰废水而致出水水质不达标,故进行提标改造。提标改造工程采用了流化床生物膜+活性污泥相结合工艺,悬浮填料采用机械搅拌流化推流,具有用地面积节省、土建投资少、投入成本低等特点。该厂整套系统于2016年12月15日启动调试,迄今已进入稳定运行期。填料流化的好坏直接影响到整套系统的正常运行,因此填料流化推流器的设计是MBBR工艺中非常关键的一点。着重介绍了生物池使用填料流化推流器的前期设计、调试安装、试运行期间的工程应用经验,可供其他类似污水处理厂MBBR工艺中生物池系统设计和运行管理参考。

In Xilinhaote wastewater treatment plant, the effluent quality could not meet the required standard after a large amount of slaughterhouse wastewater flowed into the plant. So it is necessary to upgrade the treatment process. Since the suspended filler with mechanical flow thruster agitation has advantages such as land saving, less construction investment, low cost etc., the combination process of fluidized bed biofilm and activated sludge was adopted in the upgrading project. The start and operation of the whole treatment process of this plant was on 15 December in 2016. Now, the process is in the sta- ble operation period. Packing fluidization quality directly affects the performance of the treatment process, so the design of flow thruster is the key point in MBBR process. This paper introduces the appli- cation experience of the preliminary design of biological tank with packing and flow inverter, debugging, installation and commissioning of the project, which could be used as a reference for the design and operation management of biological tank in the MBBR process of other similar wastewater treatment plants management.