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发明公开
CN1970463A 一种聚硅酸－壳聚糖复合絮凝剂及其酸式制备方法 失效 - 权利终止 转让

一种聚硅酸－壳聚糖复合絮凝剂及其酸式制备方法
摘要：
本发明公开了一种聚硅酸－壳聚糖复合絮凝剂，其组成为：壳聚糖0.1～15g/l，聚硅酸以SiO2计为2～30g/l，壳聚糖/聚硅酸(以SiO2计)为0.01－2。本发明还公开了该复合絮凝剂的制备方法，将水玻璃稀释后滴加到盐酸溶液中，酸性条件下20～80℃下恒pH反应2小时以上，用盐酸调节pH至0.5～2，充分搅拌，同时缓慢滴加壳聚糖－乙酸溶液，使得CTS/SiO2的质量比为0.01～2，在40～80℃下熟化制得复合絮凝剂。本发明絮凝剂兼具聚硅酸和壳聚糖两者特性，同时具备静电中和、吸附架桥及网捕功能，对水中悬浮物具有良好的絮凝效果，能处理水中铜、锌、镍、锰，并对Ca2+有一定的抗干扰能力，能作为絮凝剂和重金属处理剂应用于水处理中。
摘要（英）：

The invention discloses a polysilicic acid-chitosan composite flocculant, which comprises the following parts: 0.1-15g/l chitosan, 2-30g/l polysilicic acid with the rate of chitosan/polysilicic acid (SiO2) at 0.01-2. The making method comprises the following steps: diluting water glass to drip in the alcaine solution; insulating at 20-80 deg.c under acid condition to react over 2h; adjusting pH value of alcaine to 0.5-2; stirring completely; dripping chitosan-acetate solution; setting the quality rate of CTS and SiO2 at 0.01-2; maturing under 40-80 deg.c to obtain the product. The flocculant is compatible with the property of polysilicic acid and chitosan, which possesses certain anti-interference ability for Ca2+.

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