The method for immobilizing the oil degradation bacteria with the reed straw as the carrier is applied for the biological purification of oil polluted large-area wetland water body.

以芦苇秸秆为载体的石油降解菌固定化方法应用于受石油污染的大面积湿地水体的生物净化。

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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。

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In this paper, the methods of pectin extraction and purification from plant tissues, including chemical and biological methods, are introduced.

本文综述了从植物中提取果胶的各种方法，包括化学提取法和生物提取法。

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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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