ACTIFLO高密度沉淀池应用于污水厂升级改造

为保障出水TP、SS含量及出水稳定性,某污水处理厂在升级改造中新增深度处理工艺——ACTIFLO高密度沉淀池,通过实验室小试和生产性实验优化运行管理,并考察了ACTIFLO高密度沉淀池突发性应急能力。结果表明,高密度沉淀池对TP和SS具有高效稳定的去除效果,出水TP的质量浓度平均达到0.2 mg/L以下,浊度达到1 NTU,出水TP和SS优于GB 18918—2002的一级A标准。对突发性进水水质突变也有较好的抗冲击能力,但整体系统对PAC和PAM的依赖性较高,任意一种药剂断药时间超过1 h,现场出水变浑浊,需密切注意出水的浊度并做好药剂保障工作。可为国内污水厂处理厂升级改造提供参考。

Application of ACTIFLO High-Density Sedimentation Tank in Upgrading of Sewage Treatment Plant

In order to ensure the TP and SS content of the effluent and the stability of the effluent,a sewage treatment plant added an advanced treatment process-ACTIFLO high-density sedimentation tank in the upgrading and transformation,optimized operation management through laboratory test and production experiment,and investigated the sudden emergency response ability of ACTIFLO high-density sedimentation tank.The results showed that,ACTIFLO high-density sedimentation tank had high and stable removal effect on total TP and SS,the average TP mass concentration in effluent reached below 0.2 mg/L,and the turbidity reached 1 NTU.The effluent TP and SS were better than the first level A standard of GB 18918-2002.And also had good resistance to sudden changes in sudden influent water quality,but the overall system had a high dependence on PAC and PAM,any medicine was stopped for more than 1 hour,the effluent on site became turbid.It is necessary to pay close attention to the turbidity of the effluent and do a good job of guaranteeing the medicine.It can provide a reference for the upgrading of the domestic sewage treatment plant.