biological purification

基本解釋

It is great important to research and apply biological purification of natural water body for protecting and using water resources.
敘述水環(huán)境容量基本概念，明確調(diào)查、研究和應(yīng)用自然水體的生物凈化作用對于保護(hù)和利用水資源的重大意義。
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.
利用強(qiáng)化生態(tài)浮床技術(shù)對生物凈化槽處理后的崇明島農(nóng)村生活污水進(jìn)行深度處理。
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.
將人工濕地技術(shù)與生物接觸氧化法相組合的生物凈化槽應(yīng)用于上海市中心城區(qū)黑臭河水凈化。

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.
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