Apparatus and method for treating waste water containing ammonium salts

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11572289
APP PUB NO 20210002147A1
SERIAL NO

17027049

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • CHINA PETROLEUM & CHEMICAL CORPORATION; SINOPEC CATALYST CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Tao Shandong, CN 5 1
Chen, Yuhua Shandong, CN 116 1486
Gao, Jin'ai Shandong, CN 4 0
Gu, Songyuan Beijing, CN 15 10
Li, Ye Beijing, CN 176 1795
Liu, Fuzu Shandong, CN 4 0
Liu, Zhijian Beijing, CN 24 69
Wang, Tao Beijing, CN 1319 8648
Xu, Shupeng Shandong, CN 4 0
Yang, Ling Shandong, CN 168 1076
Yi, Hongliang Beijing, CN 18 20
Yin, Xiping Beijing, CN 4 0
Yuan, Zhiwei Beijing, CN 7 0
Zhang, Zhimin Shandong, CN 36 368
Zhou, Yan Shandong, CN 1779 8074

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 7, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 7, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 7, 2034
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00