求翻译：动态试验中通过的污泥回流比可行性试验、污泥回流比对涡流澄清池启动时间影响试验、污泥回流比对涡流澄清池混凝剂投加量的影响试验、污泥回流比在不同絮凝时间下对处理效果的影响试验，研究污泥回流对涡流澄清池不同工况下的运行情况，分析对比实际运行效果，确定涡流澄清池的最佳运行工况及相关试验参数。是什么意思？

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