Vivianite for Phosphorus Recovery from Digester Supernatant in Wastewater Treatment Plants

被引：1

作者：

Amjad, Salman ^{[1
]}

Christensen, Morten Lykkegaard ^{[2
]}

Reitzel, Kasper ^{[3
]}

Qu, Haiyan ^{[1
]}

机构：

[1] Univ Southern Denmark, Dept Green Technol, Campusvej 55, DK-5230 Odense M, Denmark

[2] Aalborg Univ, Dept Chem & Biosci, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark

[3] Univ Southern Denmark, Dept Biol, Campusvej 55, DK-5230 Odense M, Denmark

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2023年 / 46卷 / 11期

关键词：

Digester supernatant; Metastable zone width; Phosphorus recovery; Vivianite crystallization; CALCIUM PHOSPHATES; CRYSTALLIZATION; SOLUBILITY;

D O I：

10.1002/ceat.202300071

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Phosphorus (P) recovery by crystallization of vivianite in digester supernatant (DS) was investigated. A high recovery yield (> 90 %) was obtained with vivianite even for DS with low P concentration (74 mg L-1), as opposed to the formation of struvite and hydroxyapatite where the yield was lower than 50-60 %. Various strategies were tested to produce vivianite with large sizes and narrow size distribution, such as a controlled reagent dosing profile, self-seeded crystallization, and multistage cascade-seeded crystallization. The obtained results demonstrated that the main challenge in the development of vivianite P recovery is to promote crystal growth and to suppress secondary nucleation of vivianite during the crystallization process.

引用

页码：2321 / 2329

页数：9