Multi-component liquid micro-filtration apparatus with surface cleaning - has vertical skeins formed of a number of equal length hollow fibres each end held in headers where air discharged at skein base produces bubbles in quantity large enough to scrub the fibres.

摘要

A micro-filtration appts. has first and second headers vertically spaced apart at a fixed distance, the lower within the liq. substrate. Each header securely holds one end of a number of hollow fibre membranes each of equal length which is 0.1 to 5% greater than the length between the headers permitting restricted movement of the central fibre portion independent of the movement of another fibre which are subjected to transmembrane pressure differential in the range 0.1 to 50 psi. Also claimed are: (i) permeate collecting means sealing connected in fluid communication with permeate discharge face of each header and a means to withdraw the permeate; (ii) gas scrubbing assembly; (iii) process for maintaining the outer surfaces of the membranes free from build-up; (iv) method of forming a skein; and (v) a header having potted hollow fibre membranes.