Apparatus and method for treating waste water containing ammonium salts

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United States of America Patent

PATENT NO 11572289
APP PUB NO 20210002147A1
SERIAL NO

17027049

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
CHINA PETROLEUM & CHEMICAL CORPORATIONBEIJING
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
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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