Treatment and Reuse of Dairy Waste Water by Membrane ...

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GRØN DYST 2014 Technical University of Denmark

Treatment and Reuse of Dairy Waste Water by Membrane Technology
Paper
Author:H. Teglborg (Sino-Danish Center for Education and Research, China)
Y. Wang (Sino-Danish Center for Education and Research, China)
L. Zhao (Sino-Danish Center for Education and Research, China)
G. Chen (Sino-Danish Center for Education and Research, China)
Date: 2014-06-27     Track: Main     Session: 1

From all dairy productions there is a lot of waste water which contains lipids, proteins and lactose remains. By filtering the waste water it is possible to reuse the clean water and to convert the other compounds into useful bio-products. For example, through acid treatment, the sediment (Casein) will be used as additive for animal feed. Through ultrafiltration, the filtrated lactalbumin can be used as additive for food. After nano-filtration, the remained solution, which contains a large amount of lactose and lipids, can be transformed into biogas by fermentation.