Removal of 1-hymxyethylidene-1, 1-diphosphonic Acid of Organic Phosphorus Scale Inhibitors in Circulating Water

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Ji, Ruijuan^1

Henan Technical College of Construction, Zhengzhou

450000, China^1

关键词: Chemical precipitation;    Chemical precipitation method;    Circulating waters;    Mass concentration;    Optimal conditions;    Organic phosphorus;    Relative standard deviations;    Ultraviolet spectrophotometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/5/052002/pdf
DOI  :  10.1088/1755-1315/300/5/052002

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to remove 1-hymxyethylidene-1, 1-diphosphonic acid (HEDP) of organic phosphorus scale inhibitors in circulating water effectively, a chemical precipitation method has been used. The influences of parameter on HEDP removing rate, such as species and dosege of chemical precipitation agent, reaction time, are studied, so that the optimal conditions are confirmed. The results show that the HEDP removing rate can be higher than 95% and the relative standard deviation of mesured value is less than 1%, when the mass concentration of FeSO4 is 2 g/L, the dosage of Ca (OH)2 is 0.052 g, and reaction time is 30 min. This method is simple and rapid, has high precision and good reproducibility, can be used to remove organic phosphorus by factory, with broad application prospect.