取某氯碱厂正常回流的活性污泥对余氯及五种有机氯化物进行急性生物毒性试验。
The acute biological toxicity of residual chlorine and five organic chlorides against normal backflow activated sludge in a CHLOR-ALKALI factory was examined.
当回流比、 溢流率和絮体沉降特性处于变化中时，可用“状态点”的概念对活性污泥— 沉淀系统进行设计工作和系统分析。
The state point analysis can be used in the design and operation analysis of the activated sludge system as the RAS ratio, overflow rate and settling characteristics of flocci are varying.
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