磷酸铵镁结晶技术处理模拟氨氮废水

余荣台; 申亚群; 任洪强

doi:10.12030/j.cjee.20151003

环境工程学报

磷酸铵镁结晶技术处理模拟氨氮废水

, ,

余荣台, 申亚群, 任洪强. 磷酸铵镁结晶技术处理模拟氨氮废水[J]. 环境工程学报, 2015, 9(10): 4627-4631. doi: 10.12030/j.cjee.20151003

引用本文:

余荣台, 申亚群, 任洪强. 磷酸铵镁结晶技术处理模拟氨氮废水[J]. 环境工程学报, 2015, 9(10): 4627-4631. doi: 10.12030/j.cjee.20151003

Yu Rongtai, Shen Yaqun, Ren Hongqiang. Ammonium removal from simulated wastewater by struvite crystallization technology[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4627-4631. doi: 10.12030/j.cjee.20151003

Citation:

Yu Rongtai, Shen Yaqun, Ren Hongqiang. Ammonium removal from simulated wastewater by struvite crystallization technology[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4627-4631. doi: 10.12030/j.cjee.20151003

磷酸铵镁结晶技术处理模拟氨氮废水

1.
景德镇陶瓷学院材料科学与工程学院, 景德镇 333001
2.
南京大学污染控制与资源化研究国家重点实验室, 南京 210023
基金项目:
国家自然科学基金面上项目(51178216)

景德镇市科技局项目(104170301)
中图分类号: X703

Ammonium removal from simulated wastewater by struvite crystallization technology

1.
School of Materials Science and Engineering, Jingdezhen Ceramic College, Jingdezhen 333001, China
2.
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjin University, Nanjing 210023, China
Fund Project:

摘要: 从工程应用角度出发,考察了不同氨氮起始浓度、反应温度、搅拌速率及搅拌时间对磷酸铵镁化学结晶技术沉氨效果的影响。研究结果表明,当氨氮起始浓度超过200 mg/L时,氨氮去除率达到90%以上。不同温度条件下,氨氮去除率超过80%。随着温度升高,氨氮去除率明显上升,最高可达90%以上。搅拌是晶粒生长的一个重要影响因素;搅拌速率对晶粒生长作用复杂,当搅拌速率低于150 r/min时,加速了晶粒生长,达2.25 nm;提高搅拌速率,晶粒大小降至1.54 nm。而搅拌时间对晶粒生长起着非常明显的促进作用;随着搅拌时间的延长,晶粒出现明显的增长,从5 min的0.47 nm长至120 min的1.71 nm。
- 起始氨氮浓度 /
- 磷酸铵镁 /
- 反应温度 /
- 搅拌速率 /
- 搅拌时间
Abstract: The effects of initial concentration of ammonium, stirring speed, mixing time and reaction temperature on the removal of ammonium by magnesium ammonium phosphate precipitation were investigated from the aspect of engineering application. The results showed that the removal rate of ammonium was more than 90% when the initial concentration of ammonium was above 200 mg/L. An ammonium removal rate of more than 80% was achieved for all test temperatures, and the removal rate increased up to 90% with the increase of reaction temperature. As a key factor, stirring was observed to influence the grain growth in a complicated manner. A complicated effect of stirring speed on grain growth was found, a stirring speed lower than 150 rpm would accelerate the struvite crystal nucleation, with a grain size of 2.25 nm. The grain size decreased to 1.54 nm with the increase of stirring speed. Finally, the grain growth was significantly accelerated by extending the mixing time, from 0.47 nm (5min) to 1.71 nm (120 min).
- initial concentration of ammonium /
- struvite /
- reaction temperature /
- stirring speed /
- mixing time

[1]	吴彦瑜, 彭晓春, 陈志良, 等. MAP沉淀法去除渗滤液中低浓度氨氮. 环境工程学报, 2013, 7(3): 925-930 Wu Yangyu, Peng Xiaochun, Chen Zhiliang, et al. Treatment of low concentration ammonium nitrogen in landfill leachate with MAP precipitation. Chinese Journal of Environmental Engineering, 2013, 7(3), 925-930(in Chinese)
[2]	王国文, 王栋, 王明明, 等. 重金属杂质对磷酸铵镁结晶法处理制药废水的影响. 环境工程学报, 2013, 7(12): 4866-4868 Wang Guowen, Wang Dong, Wang Mingming, et al. Effect of heavy metal impurities on struvite precipitation for treatment of pharmaceutical wastewater. Chinese Journal of Environmental Engineering, 2013, 7(12): 4866-4868(in Chinese)
[3]	Zhang Tao, Ding Lili, Ren Hongqiang, et al. Ammonium nitrogen removal from coking wastewater by chemical precipitation recycle technology. Water Research, 2009, 43(20): 5209-5215
[4]	He Shilong, Zhang Yu, Yang Min, et al. Repeated use of MAP decomposition residues for the removal of high ammonium concentration from landfill leachate. Chemosphere, 2007, 66(11): 2233-2238
[5]	Kim D., Kim J., Ryu H.D., et al. Effect of mixing on spontaneous struvite precipitation from semiconductor wastewater. Bioresource Technology, 2009, 100(1): 74-78
[6]	Pakdil N. B., Filibeli A. The evaluation of pumice stone applicability at struvite crystallization by using box-benhken experimental design. Journal of Residuals Science and Technology, 2008, 5(2): 95-102
[7]	Liu Zhigang, Zhao Qingliang, Lee D.J., et al. Enhancing phosphorus recovery by a new internal recycle seeding MAP reactor. Bioresource Technology, 2008, 99(14): 6488-6493
[8]	Kim E.H., Yim S.B., Jung H. C., et al. Hydroxyapatite crystallization from a highly concentrated phosphate solution using powdered converter slag as a seed material. Journal of Hazardous Materials, 2006, 136(3): 690-697
[9]	Ohlinger K. N., Young T. M., Schroeder E. D. Postdigestion struvite precipitation using a fluidized bed reactor. Journal of Environmental Engineering, 2000, 126(4): 361-368
[10]	Wu Qingzhong, Bishop P. L. Enhancing struvite crystallization from anaerobic supernatant. Journal of Environmental Engineering and Science, 2004, 3(1): 21-29
[11]	Shimamura K., Tanaka T., Miura Y., et al. Development of a high-efficiency phosphorus recovery method using a fluidized-bed crystallized phosphorus removal system. Water Science and Technology, 2003, 48(1): 163-170
[12]	Battistoni P., Boccadoro R., Fatone F., et al. Auto-nucleation and crystal growth of struvite in a demonstrative fluidized bed reactor (FBR). Environmental Technology, 2005, 26(9): 975-982
[13]	Battistoni P., Fava G., Pavan P., et al. Phosphate removal in anaerobic liquors by struvite crystallization without addition of chemicals: Preliminary results. Water Research, 1997, 31(11): 2925-2929
[14]	Ohlinger K. N., Young T. M., Schroeder E. D. Kinetics effects on preferential struvite accumulation in wastewater. Journal of Environmental Engineering, 1999, 125(8): 730-737

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磷酸铵镁结晶技术处理模拟氨氮废水

1. 景德镇陶瓷学院材料科学与工程学院, 景德镇 333001
2. 南京大学污染控制与资源化研究国家重点实验室, 南京 210023

收稿日期: 2014-08-05

基金项目:

国家自然科学基金面上项目(51178216)

景德镇市科技局项目(104170301)

关键词:

摘要: 从工程应用角度出发,考察了不同氨氮起始浓度、反应温度、搅拌速率及搅拌时间对磷酸铵镁化学结晶技术沉氨效果的影响。研究结果表明,当氨氮起始浓度超过200 mg/L时,氨氮去除率达到90%以上。不同温度条件下,氨氮去除率超过80%。随着温度升高,氨氮去除率明显上升,最高可达90%以上。搅拌是晶粒生长的一个重要影响因素;搅拌速率对晶粒生长作用复杂,当搅拌速率低于150 r/min时,加速了晶粒生长,达2.25 nm;提高搅拌速率,晶粒大小降至1.54 nm。而搅拌时间对晶粒生长起着非常明显的促进作用;随着搅拌时间的延长,晶粒出现明显的增长,从5 min的0.47 nm长至120 min的1.71 nm。

English Abstract

Ammonium removal from simulated wastewater by struvite crystallization technology

1. School of Materials Science and Engineering, Jingdezhen Ceramic College, Jingdezhen 333001, China
2. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjin University, Nanjing 210023, China

Received Date: 2014-08-05

Fund Project:

Keywords:

Abstract: The effects of initial concentration of ammonium, stirring speed, mixing time and reaction temperature on the removal of ammonium by magnesium ammonium phosphate precipitation were investigated from the aspect of engineering application. The results showed that the removal rate of ammonium was more than 90% when the initial concentration of ammonium was above 200 mg/L. An ammonium removal rate of more than 80% was achieved for all test temperatures, and the removal rate increased up to 90% with the increase of reaction temperature. As a key factor, stirring was observed to influence the grain growth in a complicated manner. A complicated effect of stirring speed on grain growth was found, a stirring speed lower than 150 rpm would accelerate the struvite crystal nucleation, with a grain size of 2.25 nm. The grain size decreased to 1.54 nm with the increase of stirring speed. Finally, the grain growth was significantly accelerated by extending the mixing time, from 0.47 nm (5min) to 1.71 nm (120 min).

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磷酸铵镁结晶技术处理模拟氨氮废水

Ammonium removal from simulated wastewater by struvite crystallization technology

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磷酸铵镁结晶技术处理模拟氨氮废水

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Ammonium removal from simulated wastewater by struvite crystallization technology

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