biological purification

基本解释

It is great important to research and apply biological purification of natural water body for protecting and using water resources.
叙述水环境容量基本概念，明确调查、研究和应用自然水体的生物净化作用对于保护和利用水资源的重大意义。
A deep treatment on purification of effluent of biological purification tank for rural domestic sewage in Chongming-Island by using enhanced ecological floating raft was performed.
利用强化生态浮床技术对生物净化槽处理后的崇明岛农村生活污水进行深度处理。
The biological purification tank combined of artificial wetland technique and the bio-contact oxidation method was applied for malodorous river water in central urban region of Shanghai City.
将人工湿地技术与生物接触氧化法相组合的生物净化槽应用于上海市中心城区黑臭河水净化。

The FDA has long considered that even minor changes in the production of biological drugs--including exactly the same isolation and purification procedures applied at significantly larger scale than previously--yield a distinct and new drug that must undergo an independent demonstration of safety and efficacy.
FORBES: Commentary