Double　layers　low　pressure　carbon　nanotubes　(CNTs)　membrane　was　prepared　by　predepositing　CNTs　on　the　Polyethersulfone　(PES)　flat　membrane　by　pressure-assisted　membrane　filtration　technology.　Ethanol　and　Triton　X-100　(TX-100)　were　used　as　dispersant　to　disperse　two　kinds　of　CNTs.　By　filtering　two　kind　of　CNTs　dispersions　in　sequence,　double　layers　CNTs　were　distributed　on　the　surface　of　a　PES　membrane.　With　the　proportion　of　the　CNTs　using　TX-100　as　dispersant　increasing,　the　pure　water　flux　of　the　double　layers　CNTs　membrane　will　decrease.　Normally,　a　membrane＇s　upper　layer　using　ethanol　as　CNTs＇　dispersant　have　higher　pure　water　flux.　Overall,　almost　all　the　double　layers　low　pressure　CNTs　membrane　realized　the　higher　HA　removal　rate　than　single　layer.　By　using　CNTs　with　a　diameter　of　10-20　nm　and　length　of　10-30　μm,　the　membrane　with　upper　layer　of　70%　CNTs　using　ethanol　as　dispersant　and　30%　CNTs　using　TX-100　as　dispersant　can　removal　over　95%　HA.　©　Content　from　this　work　may　be　used　under　the　terms　of　the　Creative　Commons　Attribution　3.0　licence.