[1]沈春花,曾庆玲,李飞,等.以鸟粪石形式从剩余污泥中回收氮和磷[J].华侨大学学报(自然科学版),2013,34(4):429-433.[doi:10.11830/ISSN.1000-5013.2013.04.0429]
　SHEN Chun-hua,ZENG Qing-ling,LI Fei,et al.Study of Recovery of Nitrogen and Phosphorus from Excess Sludge in the Form of Struvite[J].Journal of Huaqiao University(Natural Science),2013,34(4):429-433.[doi:10.11830/ISSN.1000-5013.2013.04.0429]
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以鸟粪石形式从剩余污泥中回收氮和磷()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第34卷
期数:
2013年第4期
页码:
429-433
栏目:
出版日期:
2013-07-20

文章信息/Info

Title:
Study of Recovery of Nitrogen and Phosphorus from Excess Sludge in the Form of Struvite
文章编号:
1000-5013(2013)04-0429-05
作者:
沈春花;  曾庆玲;  李飞;  周真明;  邓知雨;  何强
华侨大学 土木工程学院, 福建 厦门 361021
Author(s):
SHEN Chun-hua;  ZENG Qing-ling;  LI Fei;  ZHOU Zhen-ming;  DENG Zhi-yu;  HE Qiang
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
关键词:
污泥;  厌氧发酵;  氨氮;  正磷酸盐;  鸟粪石
Keywords:
sludge;  anaerobic fermentation;  ammonia-nitrogen;  orthophosphate;  struvite
分类号:
X703
DOI:
10.11830/ISSN.1000-5013.2013.04.0429
文献标志码:
A
摘要:
以鸟粪石形式从固体废弃物——剩余污泥中回收氮磷,探讨pH值和发酵时间对污泥发酵溶出氮和磷的影响,以及Mg和P摩尔比对回收磷的影响.结果表明:在强酸或强碱条件下,溶出的氮、磷的质量浓度较高,而且随着发酵时间延长,发酵液中氨氮与正磷酸盐质量浓度增加,其最佳发酵时间为2 d.此外,随着投加镁的增加,氮磷回收率增加,当发酵液中Mg和P的摩尔比为1.2∶1时,磷的回收率最高.对回收产物进行组分分析、电镜扫描与X射线衍射分析,证明沉淀主要成分为鸟粪石.
Abstract:
The recovery of nitrogen and phosphorus from solid waste-excess sludge by the form of struvite was studied. The effect of pH and fermentation time on the concentrations of ammonia-nitrogen and orthophosphate were investigated. The effect of molar ratio of n(Mg)∶n(P)on the recovery rate of phosphorus was also investigated. The results indicated that higher concentrations of ammonia-nitrogen and orthophosphate were observed when sludge fermented at strong acid or base conditions, respectively. With fermentation time prolonged, the mass concentrations of ammonia-nitrogen and orthophosphate increased. The optimum fermentation time was 2 d. In addition, the recovery rate of nitrogen and phosphorus increased with the increasing magnesium. The phosphorus recovery rate was highest when the molar ratio of n(Mg)∶n(P)was 1.2∶1.Component analysis, scanning electron microscope and X-ray diffraction results showed that the recovered product mainly composed of struvite.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2012-10-25
通信作者: 曾庆玲(1975-),女,副研究员,主要从事污水处理与资源化技术的研究.E-mail:zerozql@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51208215, 51108197); 福建省自然科学基金资助项目(2011J01318, 2011J05135); 中央高校基本科研业务费专项资金资助项目(11QZR08, 11QZR07)
更新日期/Last Update: 2013-07-20