Low-pressure　carbon　nanotube　membranes　(CNT　membranes)　was　prepared　with　multi-walled　carbon　nanotubes　(MWCNTs),　carboxyl　functionalized　MWCNTs　(COOH-MWCNTs)　and　single-walled　carbon　nanotubes　(SWCNTs).　Surface　properties　of　MWCNTs　and　SWCNTs　were　further　altered　by　their　non-covalent　functionalization　with　Humic　acid　(HA),　Sodium　dodecyl　sulfate　(SDS),　Sodium　alginate　(SA)　and　Polyethylene　glycol　(PEG).　The　CNT　membranes　with　different　surface　properties　were　then　used　for　the　removal　of　organic　dyes　and　pharmaceuticals　and　personal　care　products　(PPCPs).　The　results　revealed　that　HA/SDS/SA　non-covalent　functionalized　MWCNTs　membrane　significantly　promoted　the　removal　of　cationic　dye　MB,　while　it　slightly　interfered　the　removal　of　anionic　dye　RB19.　During　the　dynamic　filtration　process,　a　20∼30%　increase　of　MB　removal　was　promoted　by　HA/SDS/SA-MWCNTs　membrane　compared　with　the　MWCNTs　membrane,　while　the　HA/SDS/SA-MWCNTs　membrane　significantly　deteriorated　the　removal　of　PPCPs.　The　specific　surface　area　of　CNTs　played　a　very　important　role　in　the　dynamic　filtration　process　of　CNT　membranes.　The　removal　rate　of　PPCPs　by　SWCNTs　membranes　was　almost　all　above　70%　after　120　min＇s　filtration,　and　a　further　10%　increase　was　promoted　by　SA-SWCNTs　membrane.　HA　and　SDS　non-covalent　functionalization　only　slightly　deteriorate　the　removal　of　PPCPs,　and　the　removal　rate　of　majority　of　PPCPs　by　HA-SWCNTs　membrane　and　SDS-SWCNTs　membrane　remained　over　60%　and　30%.　This　work　present　new　insight　for　the　effectiveness　of　low-pressure　CNT　membranes　in　actual　application,　where　the　impact　of　competitive　background　organic　materials　on　the　removal　of　Low-MW　organic　pollutants　were　sometimes　overestimated.　©　2023　Elsevier　Ltd