A pilot-scale study of struvite precipitation in a stirred tank reactor: Conditions influencing the process

被引：165

作者：

Pastor, L. ^{[2
]}

Mangin, D. ^{[3
]}

Barat, R. ^{[2
]}

Seco, A. ^{[1
]}

机构：

[1] Univ Valencia, Dept Ingn Quim, E-46100 Valencia, Spain

[2] Univ Politecn Valencia, Dept Ingn Hidraul & Med Ambiente, Valencia 46022, Spain

[3] Univ Lyon 1, ESCPE Lyon, LAGEP, F-69622 Villeurbanne, France

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 14期

关键词：

phosphorus recovery; crystallization reactor; nutrient removal;

D O I：

10.1016/j.biortech.2007.12.003

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Currently, the two most developed techniques for recovering phosphorus from wastewater consist of the formation of calcium phosphates and struvite (MgNH(4)PO(4)center dot 6H(2)O). In this work the influence of the operational conditions on the struvite precipitation process (pH in the reactor, hydraulic retention time, and magnesium: phosphorus, nitrogen:phosphortis, and calcium: magnesium molar ratios) have been studied. Twenty-three experiments with artificial wastewater were performed in a stirred reactor. In order to obtain the pH value maintenance during the crystallization process, a fuzzy logic control has been developed. High phosphorus removal efficiencies were reliably achieved precipitating the struvite as easily dried crystals or as pellets made up of agglomerated crystals. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：6285 / 6291

页数：7

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