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首页> 外文会议>55th Appita Annual Conference Apr 30-May 2, 2001 Hobart, Australia >Effect of anionic components in the feed water of cationic flocculants
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Effect of anionic components in the feed water of cationic flocculants

机译：阳离子絮凝剂进水中阴离子组分的影响

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The trend towards lower fresh water consumption and effluent minimization has been an important topic in recent years. The stringent closure of the water circuits in the paper making process will make it necessary to consider the use of circulation water also for the feed of paper chemicals, such as retention aids. However, the impurities in the circulation water can interfere with the retention aids causing a substantial decrease in the efficiency of the retention aid or even make them completely ineffective. The most detrimental impurities for cationic polyelectrolytes are anionic polyelectrolytes. They can form complexes, thereby cause deposits, and make these chemicals completely ineffective. The aim of this study was to find out the needs for purification of circulation water containing anionic substances in case it is used as flocculant's feed water. It was also investigated if the formation of polyanion-polycation complexes could be utilized in the treatment of circulation water used for the dilution of cationic retention aid.
机译：近年来，减少淡水消耗和减少废水的趋势一直是重要的话题。造纸过程中水回路的严格关闭将使得有必要考虑将循环水也用于进纸化学品（例如助留剂）的进料。然而，循环水中的杂质会干扰助留剂，导致助留剂的效率大大降低，甚至使其完全失效。阳离子聚电解质最有害的杂质是阴离子聚电解质。它们会形成络合物，从而导致沉积，并使这些化学物质完全无效。这项研究的目的是要找出含有阴离子物质的循环水用作絮凝剂给水时的净化需求。还研究了聚阴离子-聚阳离子络合物的形成是否可用于处理用于稀释阳离子助留剂的循环水。

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