氧化铁红生产中氨的回收及循环利用

刘昭成; 郑雅杰

环境工程学报

氧化铁红生产中氨的回收及循环利用

刘昭成, 郑雅杰. 氧化铁红生产中氨的回收及循环利用[J]. 环境工程学报, 2009, 3(10): 1800-1803.

引用本文:

刘昭成, 郑雅杰. 氧化铁红生产中氨的回收及循环利用[J]. 环境工程学报, 2009, 3(10): 1800-1803.

Liu Zhaocheng, Zheng Yajie. Recovery and recycling of ammonia in iron oxide red preparing processes[J]. Chinese Journal of Environmental Engineering, 2009, 3(10): 1800-1803.

Citation:

Liu Zhaocheng, Zheng Yajie. Recovery and recycling of ammonia in iron oxide red preparing processes[J]. Chinese Journal of Environmental Engineering, 2009, 3(10): 1800-1803.

氧化铁红生产中氨的回收及循环利用

刘昭成¹,
郑雅杰¹

1.
中南大学冶金科学与工程学院，长沙 410083
基金项目:
广东省创新基金项目（200501045）
中图分类号: X781

Recovery and recycling of ammonia in iron oxide red preparing processes

Liu Zhaocheng¹,
Zheng Yajie¹

1.
School of Metallurgical Science and Engineering, Central South University, Changsha 410083,China
Fund Project:

摘要: 利用吹脱工艺处理水热法制备氧化铁红产生的高浓度氨氮废水。经试验所得最佳的吹脱工艺参数为pH=12、CaO浓度30%、吹脱温度100℃和负压吹脱30 min。在此条件下，氨的回收利用率可达97.40%。用硫酸铁溶液吸收吹脱后氨水，使得氨得到了循环利用。水热实验证明回收的氨水并不影响氧化铁红产品的质量。
- 吹脱法 /
- 氨氮 /
- 回收及循环
Abstract: Blow-off method was employed to study the treatment of high concentration ammonianitrogen wastewater from iron oxide red prepared by hydrothermal method. The optimal process parameters achieved in the experiment included a pH value of 12, CaO concentration of 30%, blow-off temperature of 100℃ and blowoff time with negative pressure of 3 h. Under these conditions, an ammonianitrogen recovery rate of 97.40% could be obtained. Ammonia of blowoff reacted with ferric sulfate solution and was recycled completely. It is verified in a lab experiment that the reused ammonia doesn’t lower the quality of the iron oxide red prepared by hydrothermal method.
- blow-off method /
- ammonianitrogen /
- recovery and recycling

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刘昭成, 郑雅杰. 氧化铁红生产中氨的回收及循环利用[J]. 环境工程学报, 2009, 3(10): 1800-1803.

引用本文:

刘昭成, 郑雅杰. 氧化铁红生产中氨的回收及循环利用[J]. 环境工程学报, 2009, 3(10): 1800-1803.

Liu Zhaocheng, Zheng Yajie. Recovery and recycling of ammonia in iron oxide red preparing processes[J]. Chinese Journal of Environmental Engineering, 2009, 3(10): 1800-1803.

Citation:

Liu Zhaocheng, Zheng Yajie. Recovery and recycling of ammonia in iron oxide red preparing processes[J]. Chinese Journal of Environmental Engineering, 2009, 3(10): 1800-1803.

氧化铁红生产中氨的回收及循环利用

刘昭成¹,
郑雅杰¹

1. 中南大学冶金科学与工程学院，长沙 410083

收稿日期: 2009-01-05

基金项目:

广东省创新基金项目（200501045）

关键词:

吹脱法 /
氨氮 /
回收及循环

摘要: 利用吹脱工艺处理水热法制备氧化铁红产生的高浓度氨氮废水。经试验所得最佳的吹脱工艺参数为pH=12、CaO浓度30%、吹脱温度100℃和负压吹脱30 min。在此条件下，氨的回收利用率可达97.40%。用硫酸铁溶液吸收吹脱后氨水，使得氨得到了循环利用。水热实验证明回收的氨水并不影响氧化铁红产品的质量。

English Abstract

Recovery and recycling of ammonia in iron oxide red preparing processes

Liu Zhaocheng¹,
Zheng Yajie¹

1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083,China

Received Date: 2009-01-05

Fund Project:

Keywords:

Abstract: Blow-off method was employed to study the treatment of high concentration ammonianitrogen wastewater from iron oxide red prepared by hydrothermal method. The optimal process parameters achieved in the experiment included a pH value of 12, CaO concentration of 30%, blow-off temperature of 100℃ and blowoff time with negative pressure of 3 h. Under these conditions, an ammonianitrogen recovery rate of 97.40% could be obtained. Ammonia of blowoff reacted with ferric sulfate solution and was recycled completely. It is verified in a lab experiment that the reused ammonia doesn’t lower the quality of the iron oxide red prepared by hydrothermal method.

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氧化铁红生产中氨的回收及循环利用

Recovery and recycling of ammonia in iron oxide red preparing processes

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氧化铁红生产中氨的回收及循环利用

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Recovery and recycling of ammonia in iron oxide red preparing processes

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