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1. 发明申请

WO2003040240A1 METHOD OF REDUCING THE ORGANIC CARBON CONTENT OF PRODUCTION WASTE WATER IN THE COURSE OF THE PREPARATION OF CONCENTRATED SOLUTIONS OF ANIONIC ORGANIC COMPOUNDS 审中-公开
标题翻译：减少生产废水的有机碳含量的方法在制备有机化合物浓缩溶液的过程中
公开(公告)号：WO2003040240A1
公开(公告)日：2003-05-15
申请号：PCT/EP2002/012161
申请日：2002-10-31
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , HUBER, Kurt , LUCAS, Rolf , MALISZ, Jacek , WAGNER, Ernst
发明人： HUBER, Kurt , LUCAS, Rolf , MALISZ, Jacek , WAGNER, Ernst
IPC分类号： C09B67/54
CPC分类号： C09B67/0096 , C02F1/442 , C02F1/444 , C02F2101/30 , C02F2101/308 , C02F2103/28 , C09B67/0073
摘要： The present invention relates to a method of reducing the total organic carbon (TOC) content of waste water in the course of the preparation of concentrated solutions or suspensions of anionic organic compounds, which method comprises increasing the concentration of an aqueous solution or suspension of an anionic organic compound in the form of its free acid or its alkali metal salt, having a salt content of less than 5% of extraneous salt by weight based on the total solution or suspension, by microfiltration, ultrafiltration and/or nanofiltration, a) the membrane pore size being so selected that compounds having molecular weights in the range from 300 to 1000 Daltons or higher are retained, and b) the content of anionic compound in the concentrate being so adjusted to from 10 to 50% by weight that the total organic carbon (TOC) content of the permeate is less than 0.5% by weight, based on the total permeate, and c) optionally, after increasing the concentration of a suspension, dissolving the anionic organic compound by adding a suitable base. The invention relates also to the solutions and suspensions prepared by that means and to the use of such solutions or suspensions in dyeing or optically whitening paper or textile materials.
摘要翻译：本发明涉及一种在制备阴离子有机化合物的浓缩溶液或悬浮液的过程中降低废水总有机碳（TOC）含量的方法，该方法包括增加阴离子有机化合物的水溶液或悬浮液的浓度其游离酸或其碱金属盐形式的阴离子有机化合物，其盐含量基于总溶液或悬浮液，通过微量过滤，超滤和/或纳滤，重量小于外来盐的5％，a）膜孔径选择为保留分子量在300至1000道尔顿或更高范围内的化合物，和b）将浓缩物中阴离子化合物的含量调节至10至50重量％，使总有机物基于总渗透物，渗透物的碳（TOC）含量小于0.5重量％，c）任选地，在增加悬浮液的浓度后，通过加入合适的碱来洗涤阴离子有机化合物。本发明还涉及通过这种方法制备的溶液和悬浮液以及这种溶液或悬浮液在染色或光学增白纸或纺织材料中的用途。

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