推流式渐减曝气-多段沉淀工艺在排口水体治理中的应用

Application of push-flow decreasing aeration-multi-stage sedimentation process in treatment of discharge outlet water

以河道水环境治理项目为例,介绍推流式渐减曝气-多段沉淀工艺在排口水体治理中的应用,详细介绍了工艺流程、主要构筑物及参数。运行数据分析结果表明,该工艺对CODCr、NH3-N、TP的平均去除率分别为87.85%、99.63%、97.32%,优于GB 3838—2002《地表水环境质量标准》中的V类水标准。该工艺具有运行稳定,出水效果好,建设周期短,占地面积小的特点。

Taking riverway water environment treatment as an example,the application of push-flow decreasing aeration-multi-stage sedimentation process in treatment of discharge outlet water was introduced.The process flow as well as the main structures and relevant parameters were introduced in detail.The operating data analysis results showed that,the average removal rates of CODCr,NH3-N and TP were 87.85%,99.63%,97.32%respectively,which superior to the requirement of class V standards of GB 3838—2002 Environmental quality standard for surface water.The said process has advantages of stable operation,good effluent water quality,short construction period,small floor area and so on.