Removal and recovery of fluoride from wastewater by crystallization: effect of aluminum

被引：12

作者：

Jiang, Ke ^{[1
]}

Zhou, Kanggen ^{[2
]}

机构：

[1] Changsha Environm Protect Vocat Coll, Dept Environm Engn, Changsha, Hunan, Peoples R China

[2] Cent S Univ, Sch Met & Environm, Changsha, Hunan, Peoples R China

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2019年 / 54卷 / 07期

关键词：

Equilibrium; fluidized bed reactor; zeta potential; calcium fluoride; seed; FLUIDIZED-BED; CALCIUM-FLUORIDE; SEMICONDUCTOR INDUSTRY; AQUEOUS-SOLUTIONS; WASTEWATERS; ELECTROCOAGULATION; PHOSPHATE;

D O I：

10.1080/01496395.2018.1529794

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of aluminum on the treatment of fluorine-containing synthetic wastewater by crystallization was investigated. The results showed that the optimal conditions for fluoride removal were found at pH 7.2-10.5, and at an aluminum concentration of 80-700 mg/L. During operation of the fluidized bed reactor, the effluent fluoride concentration was 13-25 mg/L at an influent aluminum concentration of 80-150 mg/L. The recovered pellets matched well with the national standard of fluorspar in China (GB19321-88). It was feasible to recover calcium fluoride from fluorine and aluminum-containing wastewater by crystallization.

引用

页码：1241 / 1246

页数：6

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