Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines
Ammonium sulfate is a commonly used leaching agent in the mining process of southern ion-type rare earth mines, which causes large quantities of mine ammonia-nitrogen wastewater under the leaching action of rainwater even after stopping mining for a long time. The typical characteristics of ion-type...
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Editorial Office of Industrial Water Treatment
2025-01-01
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| Series: | Gongye shui chuli |
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| Online Access: | https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2024-0059 |
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| author | FAN Cunwen GUO Peijie HU Yujia LIU Xinfu QIU Qingrong SU Hao ZHANG Dachao |
| author_facet | FAN Cunwen GUO Peijie HU Yujia LIU Xinfu QIU Qingrong SU Hao ZHANG Dachao |
| author_sort | FAN Cunwen |
| collection | DOAJ |
| description | Ammonium sulfate is a commonly used leaching agent in the mining process of southern ion-type rare earth mines, which causes large quantities of mine ammonia-nitrogen wastewater under the leaching action of rainwater even after stopping mining for a long time. The typical characteristics of ion-type rare earth mine ammonia-nitrogen wastewater are extreme low C/N, coexistence of ammonia and nitrate, which increased the cost and difficulty of nitrogen removal. Taking Ganzhou rare earth mining area, which had the largest amount of ionic rare earth resources in China, as an example, the water quantity and quality characteristics of ammonia-nitrogen wastewater from ion-type rare earth mines were analyzed. The process technology characteristics of existing ion-type rare earth mine wastewater treatment engineering practices were compared, and theoretical cost analysis was conducted. Based on the analysis of the advantages and disadvantages of new biological nitrogen removal technologies such as Anammox in the treatment of ammonia-nitrogen wastewater from rare earth mines, a combined process of partial denitrification-partial nitrification-Anammox was proposed to improve the effluent quality and reduce energy, which was proved to be the best process for removing nitrogen from ammonia-nitrogen wastewater of ionic rare earth mines. |
| format | Article |
| id | doaj-art-3fabf240633f4d1283dc43949fd2ef82 |
| institution | Kabale University |
| issn | 1005-829X |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Industrial Water Treatment |
| record_format | Article |
| series | Gongye shui chuli |
| spelling | doaj-art-3fabf240633f4d1283dc43949fd2ef822025-01-24T07:59:03ZzhoEditorial Office of Industrial Water TreatmentGongye shui chuli1005-829X2025-01-0145191610.19965/j.cnki.iwt.2024-00591005-829X（2025）01-0009-08Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth minesFAN Cunwen0GUO Peijie1HU Yujia2LIU Xinfu3QIU Qingrong4SU Hao5ZHANG Dachao6College of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou341000, ChinaGanzhou Ecological Environment Engineering Investment Co., Ganzhou341000, ChinaGanzhou Ecological Environment Engineering Investment Co., Ganzhou341000, ChinaGanzhou Ecological Environment Engineering Investment Co., Ganzhou341000, ChinaCollege of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou341000, ChinaCollege of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou341000, ChinaCollege of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou341000, ChinaAmmonium sulfate is a commonly used leaching agent in the mining process of southern ion-type rare earth mines, which causes large quantities of mine ammonia-nitrogen wastewater under the leaching action of rainwater even after stopping mining for a long time. The typical characteristics of ion-type rare earth mine ammonia-nitrogen wastewater are extreme low C/N, coexistence of ammonia and nitrate, which increased the cost and difficulty of nitrogen removal. Taking Ganzhou rare earth mining area, which had the largest amount of ionic rare earth resources in China, as an example, the water quantity and quality characteristics of ammonia-nitrogen wastewater from ion-type rare earth mines were analyzed. The process technology characteristics of existing ion-type rare earth mine wastewater treatment engineering practices were compared, and theoretical cost analysis was conducted. Based on the analysis of the advantages and disadvantages of new biological nitrogen removal technologies such as Anammox in the treatment of ammonia-nitrogen wastewater from rare earth mines, a combined process of partial denitrification-partial nitrification-Anammox was proposed to improve the effluent quality and reduce energy, which was proved to be the best process for removing nitrogen from ammonia-nitrogen wastewater of ionic rare earth mines.https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2024-0059ion-type rare earth mineammonia-nitrogen wastewaterpartial denitrificationpartial nitrificationanammox |
| spellingShingle | FAN Cunwen GUO Peijie HU Yujia LIU Xinfu QIU Qingrong SU Hao ZHANG Dachao Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines Gongye shui chuli ion-type rare earth mine ammonia-nitrogen wastewater partial denitrification partial nitrification anammox |
| title | Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines |
| title_full | Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines |
| title_fullStr | Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines |
| title_full_unstemmed | Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines |
| title_short | Process on biological nitrogen removal technology of ammonia- nitrogen wastewater from ion-type rare earth mines |
| title_sort | process on biological nitrogen removal technology of ammonia nitrogen wastewater from ion type rare earth mines |
| topic | ion-type rare earth mine ammonia-nitrogen wastewater partial denitrification partial nitrification anammox |
| url | https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2024-0059 |
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