Process, system and apparatus to control mass transfer in a membrane separation plant

摘要

1. Process to control mass transfer in a membrane separation plant equipped with industrial membranes, especially membrane modules, at the inlet port of which an aqueous feed solution, especially untreated water, is piped under pressure past the membranes with a velocity component parallel to their surface and there divided by virtue of a trans-membrane pressure difference into a concentrate stream supplemented with constituent substances and a permeate stream which passes through the membrane and has been depleted of constituent substances, and channelled to separate concentrate and permeate outlet ports, characterized in that feed solution on the inlet side and concentrate on the outlet side are diverted at the respective pressure prevailing and in each case channelled with a velocity component parallel to its surface past an inspection membrane whose retention capacity is essentially the same as that of the membranes of the plant, and in that the permeate volumetric flows passing through the inspection membranes are measured continuously or at given time intervals.