申请人:DAIKIN INDUSTRIES, LTD.
公开号:EP3862324A1
公开(公告)日:2021-08-11
Provided is a method for removing a fluorine-containing compound from discharge water including bringing discharge water containing two or more fluorine-containing compounds represented by the following general formula (1) or (2) into contact with an adsorbent to allow the adsorbent to adsorb the two or more fluorine-containing compounds:
General Formula (1): (H-(CF2)m-COO)pM1
wherein m is 3 to 19, M1 is H, a metal atom, NRb4, where Rb is the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and p is 1 or 2,
General Formula (2) : (H-(CF2)n-SO3)qM2
wherein n is 4 to 20; M2 is H, a metal atom, NRb4, where Rb is the same as above, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
本发明提供了一种从排放水中去除含氟化合物的方法,包括将含有两种或两种以上由以下通式(1)或(2)表示的含氟化合物的排放水与吸附剂接触,使吸附剂吸附两种或两种以上含氟化合物:
通式 (1):(H-(CF2)m-COO)pM1
其中 m 为 3 至 19,M1 为 H、金属原子、NRb4(其中 Rb 相同或不同,且为 H 或具有 1 至 10 个碳原子的有机基团)、可选具有取代基的咪唑鎓、可选具有取代基的吡啶鎓或可选具有取代基的膦;p 为 1 或 2、
通式(2):(H-(CF2)n-SO3)qM2
其中 n 为 4 至 20;M2 为 H、金属原子、NRb4(其中 Rb 与上述相同)、任选具有取代基的咪唑鎓、任选具有取代基的吡啶鎓或任选具有取代基的膦;以及 q 为 1 或 2。