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公开(公告)号:EP3374318A1
公开(公告)日:2018-09-19
申请号:EP16801047.8
申请日:2016-11-08
发明人: VAN LIER, Roy , HASHMI, Syed Azhar , CHAITANYA, Vadlamani Prasad Rao , MOHANDAS, Sandeep P. , AL-SUBHI, Muhammad Mosleh , SANGJOO, Lee , HANEEF, Hasan Mohammed Rashad
IPC分类号: C02F1/42 , C02F1/66 , C02F103/36 , C02F103/38
CPC分类号: C02F1/42 , B01J41/04 , B01J41/05 , B01J41/07 , B01J41/12 , B01J47/02 , B01J47/04 , B01J49/07 , B01J49/57 , C02F1/66 , C02F2001/422 , C02F2101/32 , C02F2103/36 , C02F2103/38 , C02F2209/02 , C07C51/42
摘要: A method for recovering water from purified terephthalic acid production wastewater includes: producing purified terephthalic acid comprising purified terephthalic acid feedstock and wastewater comprising impurities; separating the purified terephthalic acid feedstock from the wastewater comprising impurities; transferring the wastewater to a tank; adjusting the p H of the wastewater with a basic solution; adjusting the temperature of the wastewater; passing the wastewater to a column; contacting the wastewater with an ion exchange resin to remove the impurities; and recovering the water depleted of impurities.
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公开(公告)号:EP4110751A1
公开(公告)日:2023-01-04
申请号:EP21711648.2
申请日:2021-02-24
发明人: HASHMI, Syed Azhar , PATHATH, Prasanna Kumar , JANA, Suman Kumar , CHAITANYA, Vadlamani , SATHU, Naveen , SANGJOO, Lee , DAS, Debasish , SUBRAMANIAN, Selvakumar
IPC分类号: C07C51/265 , C07C63/26
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