中文摘要：

以聚硅酸和硫酸钛为原料制得絮凝剂聚硅硫酸钛（PTSS）,用电子显微镜观察其形貌,发现絮凝剂PTSS呈现不同于聚硅酸球形颗粒状的分枝长链状结构,初步推测钛与聚硅酸发生了化学成键作用;通过红外光谱与X-射线衍射研究絮凝剂PTSS结构,证实钛与聚硅酸中的硅通过氧基成键.将该絮凝剂用于处理pH为8的模拟江水,在投加量（以钛离子计）为10 mg/L时,A254的去除率为70.9%,浊度去除率为99.3%,絮凝效果良好.测定不同pH下的Zeta电位,观察所形成絮体的形貌、测定絮体粒度分布以及观测红外光谱图均发现,絮凝剂PTSS特殊的长链结构通过络合成键将模拟江水中的腐殖酸官能团带入絮体中,同时也通过吸附、网捕等作用将其余胶体颗粒去除.

英文摘要：

Poly-titanic-silicic sulfate （PTSS） was prepared by water glass and titanium sulfate. Its image was observed by electronic microscope. The result indicates that the image of PTSS is a ramose long chain which is different from the granular images of polysilicic acid, thereby conjectures that titanium bonds with the polysilicic acid. The structure of PTSS was investigated using FTIR spectroscopy and X-ray diffraction （XRD）. The result confirms that titanium bond with silicon by oxygen bridge. PTSS was applied to treat simulative water sample, the pH value of which was 8. When the dosage of poly-titanic-silicie sulfate was 10 mg/L （calculated by the mass of Ti^4＋ ）, removal rate of A254 and turbidity reached 70.9% and 99.3% respectively. The results show that the flocculant effect is very excellent. The shapes, structure and particle size distribution of sample flocs were investigated and analyzed using zeta-potential measurement, microscopy, granulometer and FTIR. The results show that the special long chains of PTSS capture the functional group of humic acid by eomplexation ability, and the other colloidal particles can be removed by bridging and netting ability of PTSS.