Nano pore NaA zeolite membranes composed of a continuous intergrowth of NaA zeolite crystals had been synthesized hydrothermally on the surface of a porous tubular support (14 mm outer diameter, 25 cm length). The membrane was highly selective for permeating water preferentially with the high permeation flux in pervaporation (PV). Thus, the pilot- scale PV plant which produces 5 l/h of solvent (Ethanol) at less than 0.2 wt.% of water from 90 wt.% solvent at 75 degrees C has been put into pilot operation. The pilot plant is equipped with 1 module that consists of 14 pieces of NaA zeolite membrane tubes. The successful fabrication of the pilot plant and the high level of PV properties of the module are discussed. (C) 2010 Elsevier B.V. All rights reserved.