Anaerobic treatment of yeast manufacturing wastewater in UASB reactors

摘要

This paper describes the behaviour of the wastewater of a yeast manufacturing plant, treated in UASB reactors. Test runs were made in a straight UASB, an UASB with recycle and a series combination of both. Maximum load attained is 10 KgCODm#x2010;3d#x2010;1for an HRT of 36 hours. It was found out that the wastewater contains about 35 of soluble non biodegradable COD, under the study conditions imposed. The recycle reactor processed slightly higher loads, developing smaller and more even sized granules.