Handcontrolled Pilot Membrane Testunit (PSta15-2)

The PSta15-2 is a universal membrane test and small production facility for carrying out experiments in the field of nano-filtration and low-pressure reverse osmosis. The system is equipped with two 2.5 “-stainless steel pressure pipes to accommodate of different spiral-wound modules and can therefore be fitted with various commercially available membrane modules. The universal configuration of the plant and the possible use of different 2.5 ” spiral-wound modules allows test runs over a wide range of industrial membrane applications. The system is compact and transparently constructed and is equipped with an operating level. The system is controlled in manual mode. The required measured values can be read directly by the user. A powerful and robust pump with bypass allows experiments over a wide volume flow range.

The feed solution for the pressure pump is fed via an internal holding tank. This can also be used as the circuit tank and is also ideally suited for cleaning the membrane modules. The level monitoring of the holding tank serves as a run-dry protection for the pump, but also allows medium to be filled via a level-controlled, switchable outlet on the unit. A drum pump with downstream filter protects the refilling and allows flexible system connections in a wide variety of applications. The trans-membrane pressure of each membrane can be measured using the pressure measurement points before and after the membrane. The setting of the membrane overflow is done using diaphragm valves together with a suspended-body flow measurement. To monitor the filtration power, the permeate volume flow is also equipped with two suspended-body flow measurements with adjustable measuring range. In addition, concentrate can be extracted in a controlled manner using a diaphragm valve with flow meter (Feed and Bleed procedure) The piping of the system is PVC (pressure range PN16) and can therefore easily be adapted.

The plant has comprehensive safety features and switches off the system based on freely-adjustable parameters such as over-temperature, over-pressure and low level. A power outage has the consequence that the system does not automatically restart and must be started again by hand.

The system itself is constructed on a hygienic plastic pallet in a compact and user-friendly manner using a stainless tube frame which can be easily extended. In addition to the system’s control- and switching-cabinet, a second cabinet is integrated to accept membrane modules and spare parts. The complete system can be packed with folding wooden frames and therefore easily transported

Possible applications:

  • Tests for comparison of different membrane materials and/or module geometries.
  • Tests for the optimisation of process parameters in industrial applications
  • Long-term trials to check the membrane long-term behaviour
  • Processing of small quantities of raw material
  • Studying fouling tendency
  • Investigation of cleaning strategies / cleaning techniques
  • Feasibility studies
  • Concentration tests
  • Diafiltration tests
  • Feed and bleed tests