Phosphate Recovery by Reactive Crystallization of Magnesium Ammonium Phosphate: Application to Wastewater
Phosphate Recovery by Reactive Crystallization of Magnesium Ammonium Phosphate: Application to Wastewater
复制标题
磷酸镁铵反应结晶回收磷酸盐：在废水中的应用
DOI：
10.1021/bk-1997-0667.ch022
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
M. Itoh
中科院分区：
文献类型：
--
作者：
I. Hirasawa;H. Nakagawa;Osamu Yosikawa;M. Itoh
在间歇搅拌结晶器中对磷酸铵镁(MAP)的反应结晶进行了实验研究。得到了MAP选择性结晶的操作条件。在此条件下，通过改变初始的镁磷比，进行了间歇结晶实验，得到了磷酸盐和镁离子的浓度降低行为。人们认识到，浓度下降模式影响所产生的晶体的性质。提出了一种结晶法去除氨氮和磷酸盐的新工艺，并将其应用于污泥处理废水中。
In this study, reactive crystallization of magnesium ammonium phosphate (MAP) has been studied experimentally in a batch agitated crystallizer. Operating conditions for selective crystallization of MAP were obtained. Under these conditions, batch crystallization experiments were performed, to obtain the behavior of concentration decrease in phosphate and magnesium ions, by changing the initial Mg/P ratio. It was recognized that the concentration decrease pattern affected the properties of produced crystals. A new process for removing ammonium and phosphate ions using a crystallization process was proposed for application to wastewater from sludge treatment processes.