Abstract: A system includes a first fluid inlet and a single reverse osmosis membrane module having a permeate outlet and a first inlet/outlet channel and a second fluid inlet/outlet channel in fluid communication with the first fluid inlet. An energy transfer system has a second fluid inlet, a brine outlet, a first energy exchanging module and a second energy exchanging module. The first and second energy exchanging modules are adapted to reversibly operate in opposite flow phases where a flow direction for the expulsion flow phase in each energy exchanging module is constant and where a flow direction for the energy recover flow phase in each energy exchanging module is constant. The single reverse osmosis membrane module is adapted to reversibly receive a feed flow through one of the first and second fluid inlet/outlet channels and produce a brine outflow through the other of the first and second inlet/outlet channels.

Abstract: A system includes a first fluid inlet and a single reverse osmosis membrane module having a permeate outlet and a first inlet/outlet channel and a second fluid inlet/outlet channel in fluid communication with the first fluid inlet. An energy transfer system has a second fluid inlet, a brine outlet, a first energy exchanging module and a second energy exchanging module. The first and second energy exchanging modules are adapted to reversibly operate in opposite flow phases where a flow direction for the expulsion flow phase in each energy exchanging module is constant and where a flow direction for the energy recover flow phase in each energy exchanging module is constant. The single reverse osmosis membrane module is adapted to reversibly receive a feed flow through one of the first and second fluid inlet/outlet channels and produce a brine outflow through the other of the first and second inlet/outlet channels.

Abstract: The present invention refers to a flow distribution measuring system comprising a sensor matrix adapted to measure the flow distribution of permeate passing through a membrane filtration arrangement and also refers to a cap comprising such a sensor matrix; wherein the cap is adapted to be affixed to a membrane filtration arrangement. The present invention further refers to methods of using the flow distribution measuring system and the cap.

Abstract: The present invention refers to a flow distribution measuring system comprising a sensor matrix adapted to measure the flow distribution of permeate passing through a membrane filtration arrangement and also refers to a cap comprising such a sensor matrix; wherein the cap is adapted to be affixed to a membrane filtration arrangement. The present invention further refers to methods of using the flow distribution measuring system and the cap.