The conventional sulfur removal process for desulfurizing crude ammonia from wastewater stripping can not meet the demand of chemically clean ammonia.

炼油厂合硫污水经汽提获得的粗氨经常规的氨精制工序达不到化工用氨的要求。

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The result shows that tubular ultrafiltration membrane is able to remove crude oil, suspended substances, and polymer from the wastewater and ensures the reliable operation of electrodialysis device.

结果表明，管式超滤膜能有效去除水中的原油、悬浮物和聚合物等杂质，保证了电渗析装置的平稳运行，而电渗析是一种经济有效的降矿化度技术；

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Based on the idea of classifying and then disposing impurities in the crude lanolin recovered from wastewater of wool-washing, three steps to refine lanolin are presented.

从对回收所得的粗羊毛脂中所含杂质进行分类处理的思路出发，得出对羊毛脂进行精制的三个步骤。

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