Biological and Filtration Performance Research on Cheese Whey Treatment by Lab-scale Anaerobic Membrane Reactor (AnMBR)
Year: 2012
Type: dissertation
Abstract: Nowadays, with the development of dairy industry, the production of cheese whey has a dramatically increase as well.Even though cheese whey is the raw material of various products, small or medium cheese manufactures cannot afford the high cost of the valorization technologies.It is necessary to find a proper way to treat whey efficiently.For this kind of easily degradable wastewater with high organic load, anaerobic treatment is the optimum method.This thesis investigated the possibility of a new method, anaerobic membrane bioreactor (AnMBR), to treat cheese whey through a lab-scale reactor.For economical concern, digested municipal sludge was used as the inoculums.The highest VLR applied in this study was 4.5 kg COD/m 3 •day with a maximal flux at 18 LMH.And the average COD removal efficiency was 96%.The poor methanogenic activity of municipal sludge seemed to limit the biological performance.The addition of crushed granular sludge was proven not to be efficient in the activity improvements.The further experiment showed that nitrogen was the limiting element for biomass growth.Inorganic precipitation was the crucial cause of membrane fouling.The cleaning process with stronger acid or longer soaking time should be applied to improve the cleaning efficiency.
Author: Xiaofei Wang
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2158256674