在原普通浓缩机结构的基础上，改为两级串联旋流絮凝沉淀池。
The treating method of an ore dressing wastewater is changed to the one using a whirling coagulation sedimentation tank on the basis of the structure of the original ordinary concentrator.
在充分分析单级SBR工艺在生物除磷脱氮过程中存在的不足的基础上，提出了两种两级SBR串联运行的除磷脱氮工艺模式。
Two tandem systems of two-stage SBR process were proposed for P and N removal to improve the single stage SBR.
采用旋风除尘器和滤袋除尘器，或旋风除尘器和滤芯除尘器串联的两级闭路回收系统，可达到喷粉理想回收效果。
Two stage connected closed recycle system, such as cyclone scrubber and bag filter scrubber, or cyclone and paper filter scrubber can enhance the recycle of powder.
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