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CE 530: Reverse Osmosis

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Reverse Osmosis

Reverse Osmosis Reverse Osmosis Reverse Osmosis

Product Details


Technical Description
This experimental unit has been developed in conjunction with the Institute for Thermal Process Engineering at the TU Hamburg-Harburg. A Sodium chloride (NaCl) solution is delivered from a tank to the membrane module using a pump. The pump generates the necessary osmotic pressure for separation. The semi-permeable membrane is permeable for water but not for the dissolved NaCl. This causes the solution to separate out into retentate (concentrated solution) and permeate (water). The retentate and permeate are fed back to the solution tank but can also be collected separately. In order to check the success of the separation, salt concentrations in the feed, retentate and permeate are recorded by measuring the respective conductivity values. A further tank containing distilled water is available for flushing the system at low pressures and high flow rates. To prevent the pump from running dry, both tanks are fitted with low water protection.

Learning Objectives / Experiments
- Determination of the membrane constants and the retention capacity  at  different feed concentrations and pressures

Features
* Membrane separation process for obtaining solvent from a salt solution
* Example application: sea water desalination
Specification
[1] Removal of solvent from a salt solution using reverse osmosis
[2] 3-way valve for selecting “separation” and “flushing” modes
[3] 2 pressure maintaining valves for adjusting the pressure for separation and flushing
[4] Flow rate adjustable using piston pump
[5] 2 tanks for salt solution and distilled water
[6] Recording of flow rate, pressure, conductivity and temperature at all relevant positions

Technical Data
Adjusting range of pressure maintaining valves:
- flushing: approx. 10bar
- separation: approx. 10...60bar
Pump: approx. 0...200L/h
2 tanks: approx. 100L each

Dimensions and Weight
Space required: l x w x h : 3000 x 1000 x 1900 mm
Weight : approx. 110 kg

Connections
230V, 50Hz, 1 phase
Distilled water and drain required

Scope of Delivery
1 experimental unit, 5kg NaCl, 1 set of instructional material

Order Details
083.53000  CE 530  Reverse Osmosis

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
E-Mail:
info@selkagmbh.com   |  Internet: http://www.selkagmbh.com

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