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公开(公告)号：US11820690B2
公开(公告)日：2023-11-21
申请号：US17037529
申请日：2020-09-29
发明人： Xiping Yin , Ye Li , Songyuan Gu , Zhijian Liu , Tao Wang , Jin'ai Gao , Yuhua Chen , Yan Zhou , Ling Yang , Zhiwei Yuan , Hongliang Yi , Tao An , Fuzu Liu , Zhimin Zhang , Shupeng Xu , Hongqi Guo
IPC分类号： C02F9/00 , C02F1/22 , C02F1/66 , C02F1/52 , C02F1/38 , C02F101/12 , C02F101/10 , C02F103/34 , C02F1/04 , C02F101/16 , C02F1/00 , C02F1/06
CPC分类号： C02F9/00 , C02F1/004 , C02F1/041 , C02F1/048 , C02F1/06 , C02F1/22 , C02F1/385 , C02F1/66 , C02F2001/5218 , C02F2101/101 , C02F2101/12 , C02F2101/16 , C02F2103/34 , C02F2301/046 , C02F2301/08
摘要： In a method for treating waste water containing ammonium salts, sodium sulfate crystal is obtained by freezing crystallization, then the pH value of the waste water is adjusted to a specific range, and next sodium chloride crystal and ammonia water is obtained by evaporation. Alternatively, the pH value of the waste water is adjusted to a specific range, then sodium chloride crystal and ammonia water is obtained by evaporation, and next sodium sulfate crystal is obtained by freezing crystallization. This method can recover ammonia, sodium sulfate, and sodium chloride from the waste water.
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公开(公告)号：US11572289B2
公开(公告)日：2023-02-07
申请号：US17027049
申请日：2020-09-21
发明人： Xiping Yin , Ye Li , Songyuan Gu , Zhijian Liu , Tao Wang , Jin'ai Gao , Yuhua Chen , Yan Zhou , Ling Yang , Zhiwei Yuan , Hongliang Yi , Tao An , Fuzu Liu , Zhimin Zhang , Shupeng Xu
IPC分类号： C02F1/04 , B01D1/00 , B01D1/28 , C02F101/12 , C02F101/10 , C02F101/16 , C02F103/36 , C02F1/66 , C02F1/06 , C02F1/38 , B01D3/10 , B01D3/14 , B01D1/26
摘要： Apparatus and methods are related to treating waste water containing ammonium salts, which contains NH4+, SO42−, Cl−, and Na+. In such a method, the pH value of the waste water to be treated is adjusted to a specific range in advance; sodium sulfate crystal and relatively concentrated ammonia are obtained by first evaporation, and then sodium chloride crystal and relatively dilute ammonia is obtained by second evaporation; alternatively, sodium chloride crystal and relatively concentrated ammonia is obtained by third evaporation, and then sodium sulfate crystal and relatively dilute ammonia are obtained by fourth evaporation. Ammonia, sodium sulfate, and sodium chloride from the waste water are recovered so that the resources in the waste water can be reused.
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公开(公告)号：US10815132B2
公开(公告)日：2020-10-27
申请号：US15958986
申请日：2018-04-20
发明人： Xiping Yin , Ye Li , Songyuan Gu , Zhijian Liu , Tao Wang , Jin'ai Gao , Yuhua Chen , Yan Zhou , Ling Yang , Zhiwei Yuan , Hongliang Yi , Tao An , Fuzu Liu , Zhimin Zhang , Shupeng Xu
IPC分类号： B01D1/00 , B01D1/26 , B01D1/28 , B01D3/10 , B01D3/14 , C02F1/00 , C02F1/04 , C02F1/06 , C02F1/38 , C02F1/66 , C02F9/00 , C02F101/12 , C02F101/10 , C02F101/16 , C02F103/36
摘要： The present invention relates to the waste water treatment field, and discloses apparatus and method for treating waste water containing ammonium salts, which contains NH4+, SO42−, Cl−, and Na+. In the method of the present invention, the pH value of the waste water to be treated is adjusted to a specific range in advance; sodium sulfate crystal and relatively concentrated ammonia are obtained by first evaporation, and then sodium chloride crystal and relatively dilute ammonia is obtained by second evaporation; alternatively, sodium chloride crystal and relatively concentrated ammonia is obtained by third evaporation, and then sodium sulfate crystal and relatively dilute ammonia are obtained by fourth evaporation. The method of the present invention can recover ammonia, sodium sulfate, and sodium chloride from the waste water respectively, so that the resources in the waste water can be reused as far as possible.
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公开(公告)号：US10829401B2
公开(公告)日：2020-11-10
申请号：US16115167
申请日：2018-08-28
发明人： Xiping Yin , Ye Li , Songyuan Gu , Zhijian Liu , Tao Wang , Jin'ai Gao , Yuhua Chen , Yan Zhou , Ling Yang , Zhiwei Yuan , Hongliang Yi , Tao An , Fuzu Liu , Zhimin Zhang , Shupeng Xu , Hongqi Guo
IPC分类号： C02F9/00 , C02F1/22 , C02F1/66 , C02F1/52 , C02F1/38 , C02F101/12 , C02F101/10 , C02F103/34 , C02F1/04 , C02F101/16 , C02F1/00 , C02F1/06
摘要： In a method for treating waste water containing ammonium salts, sodium sulfate crystal is obtained by freezing crystallization, then the pH value of the waste water is adjusted to a specific range, and next sodium chloride crystal and ammonia water is obtained by evaporation. Alternatively, the pH value of the waste water is adjusted to a specific range, then sodium chloride crystal and ammonia water is obtained by evaporation, and next sodium sulfate crystal is obtained by freezing crystallization. This method can recover ammonia, sodium sulfate, and sodium chloride from the waste water.
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