The flocculant produced by AY11 has an excellent effect in purifying and decoloring various kind of wastewater, such as urban living sewage, daily chemical plant wastewater and dye wastewater, etc.

AY 11所产絮凝剂对城市生活污水、日用化工厂废水、染料废水等多种废水均有很好的净化、脱色效果。

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The technology of molecular-distillation(MD) for purifying star anise essential oil was researched, and chemical constitutions of essential oil and distilled substance were analyzed by GC-MS.

研究分子蒸馏技术纯化八角精油的工艺条件，利用GC-MS对精油及分离纯化的馏分进行化学组成分析。

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Physical, chemical and biological control methods in the purifying water process and the secondary water supply system in Chinese water supply industry are discussed.

重点介绍了目前国内供水行业所采用物理、化学以及生物的方法在水厂净水处理及二次供水过程防除摇蚊污染的研究；

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Titan Resources, a firm based in Perth, Australia, believes it can manage to do both, without using any of the physical and chemical processes traditionally involved in purifying ores.

ECONOMIST: A cleaner and cheaper way of refining ore is to use bacteria