BEER CLARIFICATION PROCESS BY CROSSFLOW-MICROFILTRATION

摘要

A beer crossflow-microfiltration process is disclosed. In order to avoid fouling of the filter module membrane by the ingredients of the non-clarified beer to be filtered out and that form a covering layer on the membrane, filtration is interrupted from time to time. During a following short pause, the covering layer on the membrane is chemically dissolved with lye, and the covering layer is removed by backflushing the membrane with water. In order to improve filtration, the transmembrane differential pressure (p) is controlled during the filtration phase according to a substantially periodical time function and the flow velocity (v) of the beer through the membrane is substantially continuously increased.