ANAEROBIC FERMENTATION PLANT

摘要

1522780 Anaerobic digester MARQUESS OF WILLINGDON and P F ASHWELL 18 May 1977 20943/77 Heading C1C An anaerobic digester comprises an opentopped tank across the top of which is sealed an at least slightly elastic membrane (e.g. of butyl rubber) and means for supporting the membrane to prevent it sagging into a concave form when slack.