A pilot plant combining dissolved air flotation, anaerobic degradation in an expanded granular sludge bed (EGSB) reactor and aerobic post-treatment in a vertical flow constructed wetland has been used to treat tapioca starch wastewater for more than 2.25 years. It is demonstrated that organic matter (chemical oxygen demand by >98%), nitrogen (Kjeldahl-N by >90%) and cyanide (total cyanide by >99%) can be removed very efficiently under stable operating conditions. The removal efficiency for phosphorus is lower (total-P by 50%). The treatment concept, which includes several sustainable aspects, e.g. production of energy to be used on-site, low operation demands and minimal use of chemicals, could be interesting for small- and middle-sized tapioca processing plants.
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Research Article|
September 01 2013
Treatment of tapioca starch wastewater by a novel combination of physical and biological processes
J. Fettig;
1University of Applied Sciences Ostwestfalen-Lippe, Campus Hoexter, D-37671 Hoexter, Germany
E-mail: joachim.fettig@hs-owl.de
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V. Pick;
V. Pick
1University of Applied Sciences Ostwestfalen-Lippe, Campus Hoexter, D-37671 Hoexter, Germany
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U. Austermann-Haun;
U. Austermann-Haun
2University of Applied Sciences Ostwestfalen-Lippe, Campus Detmold, D-32756 Detmold, Germany
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M. Blumberg;
M. Blumberg
3Blumberg Consultants, Gaensemarkt 10, D-37120 Bovenden, Germany
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N. V. Phuoc
N. V. Phuoc
4Institute for Environment and Resources, Vietnam National University, Ho Chi Minh City, 142 To Hien Thanh Street, District 10, Ho Chi Minh City, Vietnam
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Water Sci Technol (2013) 68 (6): 1264–1270.
Article history
Received:
November 25 2012
Accepted:
April 24 2013
Citation
J. Fettig, V. Pick, U. Austermann-Haun, M. Blumberg, N. V. Phuoc; Treatment of tapioca starch wastewater by a novel combination of physical and biological processes. Water Sci Technol 1 September 2013; 68 (6): 1264–1270. doi: https://doi.org/10.2166/wst.2013.354
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