Apparatus and method for treating waste water containing ammonium salts

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United States of America Patent

PATENT NO 11820690
APP PUB NO 20210017059A1
SERIAL NO

17037529

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
CHINA PETROLEUM & CHEMICAL CORPORATIONBEIJING 100728
SINOPEC CATALYST CO LTDNO 6A HUIXIN EAST STREET CHAOYANG DISTRICT BEIJING

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Tao Shandong, CN 5 1
Chen, Yuhua Shandong, CN 132 1656
Gao, Jin'ai Shandong, CN 4 0
Gu, Songyuan Beijing, CN 15 10
Guo, Hongqi Shandong, CN 3 0
Li, Ye Beijing, CN 192 1854
Liu, Fuzu Shandong, CN 4 0
Liu, Zhijian Beijing, CN 31 78
Wang, Tao Beijing, CN 1447 9693
Xu, Shupeng Shandong, CN 4 0
Yang, Ling Shandong, CN 192 1346
Yi, Hongliang Beijing, CN 19 26
Yin, Xiping Beijing, CN 4 0
Yuan, Zhiwei Beijing, CN 8 0
Zhang, Zhimin Shandong, CN 44 425
Zhou, Yan Shandong, CN 2120 9767

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