Reverse osmosis Membrane separation process for obtaining solvent from a salt solution, system control via PLC Features - membrane separation process for obtaining solvent from a salt solution - spiral wound membrane module for separation - plant control using an integrated PLC - integrated router for operation and control via an end device and for screen mirroring on additional end devices: PC, tablet, smartphone Learning objectives/experiments - assembly, cleaning and conservation of membrane modules - fundamental principle of reverse osmosis -- Van't Hoff’s law - permeate flow rate and retention dependent on -- pressure -- salt concentration in raw water -- yield - determination of diffusion coefficients - screen mirroring: mirroring of the user interface on end devices -- menu navigation independent of the user interface shown on the touch screen -- different user levels available on the end device: for observing the experiments or for operation and control Specification [1] removal of solvent from a salt solution using reverse osmosis [2] polyamide spiral wound membrane module [3] piston pump with pulsation damper for pressure generation [4] overflow valve to adjust the pressure upstream of the membrane module [5] valve to adjust the retentate flow rate [6] safety cutout to protect the pump against dry running [7] plant control with PLC via touch screen [8] integrated router for operation and control via an end device and for screen mirroring: mirroring of the user interface on up to 5 end devices [9] data acquisition via PLC on internal memory, access to stored measured values via WLAN/LAN with integrated router/LAN connection to customer's own network or direct LAN connection without customer network [10] GUNT software for data acquisition via LAN under Windows 10 [11] separate tank containing distilled water to flush through the spiral wound membrane module Technical data PLC: Eaton XV-303 Spiral wound membrane module - active area: 1,2m2 - raw water flow rate: max. 1,4m3/h - length: approx. 533mm, Ø approx. 61mm Piston pump: max. flow rate: approx. 585L/h, max. pressure: approx. 140bar Operating pressure: max. 58bar Stirring machine - power consumption: 130W - speed: 50...1000min-1 Tanks - raw water (salt solution, 3,2% max.): approx. 110L - rinsing water (distilled water): approx. 110L - permeate: approx. 5L Measuring ranges - flow rate: 0,5...7,5L/min (retentate), 0,05...1,8L/min (permeate) - temperature: 3x 0...60°C - pressure: 4x 0...100bar (2x manometer, 2x sensor) - conductivity: 3x 0...200mS/cm 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase; UL/CSA optional LxWxH: 1250x1050x2100mm (trainer) LxWxH: 1500x1050x1400mm (supply unit) Total weight: approx. 290kg