A study of titanium sulfate flocculation for water treatment.
A study of titanium sulfate flocculation for water treatment.
复制标题
DOI：
10.1016/j.watres.2011.04.023
复制
发表时间：
2011-06
期刊：
影响因子：
12.8
通讯作者：
Yifan Wu;Wen Liu;N. Gao;T. Tao
中科院分区：
文献类型：
--
作者：
Yifan Wu;Wen Liu;N. Gao;T. Tao
关于钛盐絮凝的研究有限。采用蒸馏水和高岭土悬浮液对硫酸钛进行混凝试验。结果表明，硫酸钛絮凝剂在pH 4-6范围内絮凝效果最好，在絮凝效果良好的水中钛的浓度可以忽略不计。絮凝体的等电点（IEP）被发现是接近pH 5。结果表明，钛絮凝体的密度、粒径和沉降速度均大于铝絮凝体。钛絮体主要由TiO（OH）2组成，在高温下由非晶相转变为结晶态的二氧化钛。絮体图像显示钛和铝絮体的结构相似。实验室研究结果和中试试验表明，硫酸钛可以作为水和废水处理的替代混凝剂。
There are limited studies available on titanium salt flocculation. In this research, coagulation experiments of titanium sulfate were conducted using both distilled water and kaolin clay suspension. Results showed that titanium sulfate flocculation was most effective in the pH range 4–6, and negligible concentrations of titanium were found in the well-flocculated water. The floc isoelectric point (IEP) was found to be near pH 5. Measurements showed that the titanium flocs possessed greater density, diameter and settling velocity than the aluminum flocs. The titanium flocs were composed of TiO(OH)2, which would change from the amorphous phase into anatase titanium dioxide under elevated temperatures. Floc images showed the structural similarity of titanium and aluminum flocs. Laboratory results and a pilot experiment showed that titanium sulfate could be an alternative coagulant for water and wastewater treatment.