Carbodiimide-assisted zwitterionic modification of poly(piperazine amide) thin-film composite membrane for enhanced separation and anti-depositing performances to cationic/anionic dye aqueous solutions.

•Carbodiimide-assisted zwitterionic modification was performed with PA TFC membrane.•Irreversible depositions by dyes CR and VBB were lowered by 68.4 and 91.8 %.•Water permeabilities to CR and VBB aqueous solutions were enhanced by 62.3 and 95.2 %.•Permselectivity property was better than most of the reported zwitterionic membranes.•Separation performance to dye aqueous solutions was better than membrane NF270.