Off-line chemical cleaning can basically remove the pollution on the inner surface of the membrane, and also effective for removing the pollution on the outer surface of the membrane.

离线化学清洗可以基本消除膜丝内表面的污染，对于膜丝外表面的污染也具有显著效果。

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When cleaning in chemical medicament, please examine whether the clean pipe line operates normally. In addition, be careful not to mix medicament solution into production filter water.

用化学药剂进行清洗时，请仔细确认清洗管线是否正常工作。另外，请注意不要将药液混入生产过滤水中。

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The process and its result of the on-line cleaning program in the third circulating water system of Daqing Refining & Chemical Company are introduced.

介绍了大庆炼化公司第三循环水场在线清洗的方案制定过程及清洗结果。

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