| 摘要 |
Liquids which are contaminated in a production plant by filamentary molecules with molar masses of at least 10,000 daltons are purified by means of a selective diaphragm separation process before being fed back into the production plant. This concerns, for example, hemicellulose-contaminated caustic soda occurring in the production of cellulose and viscose. In the diaphragm separation process, nanofiltration is performed with a separation limit of under 1,000 daltons.
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