Enhancing struvite precipitation potential for ammonia nitrogen removal in municipal landfill leachate

被引：156

作者：

Kim, Daekeun ^{[1
]}

Ryu, Hong-Duck ^{[1
]}

Kim, Man-Soo ^{[1
]}

Kim, Jinhyeong ^{[1
]}

Lee, Sang-Ill ^{[1
]}

机构：

[1] Chungbuk Natl Univ, Dept Environm Engn, Cheongju, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2007年 / 146卷 / 1-2期

关键词：

struvite; precipitation; ammonia nitrogen; landfill leachate;

D O I：

10.1016/j.jhazmat.2006.11.054

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study was conducted to improve struvite precipitation for NH4-N removal purpose in landfill leachate. For this purpose, we evaluated the effect of the feeding sequence of precipitating reagents (magnesium, orthophosphate, and buffering reagent) on NH4-N removal by forming struvite deposits. Struvite precipitation effectively proceeded by an addition of excess magnesium and phosphate sources followed by an addition of the buffering reagent, in which condition the local formation of inappropriate deposits or the contamination of the desired struvite was minimized. We also tested the effect of struvite addition as the seeding materials on NH4-N removal. Seed addition would increase the potential for the struvite crystal growth, which enhanced NH4-N removal performance in landfill leachate treatment. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：81 / 85

页数：5

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