Biological treatment of milk processing wastewater in a sequencing batch flexible fibre biofilm reactor

Biological treatment of dairy wastewater was investigated using a laboratory scale aerobic sequencing batch flexible fibre biofilm reactor (SBFFBR). The SBFFBR system was modified from a typical sequencing batch reactor system by using eight flexible fibre bundles with a very high specific surface area, which served as support for microorganisms. The reactor was operated under different influent chemical oxygen demand (COD) concentrations (610, 2041 and 4382 mg l-1) and constant hydraulic retention times of 1.6 days. The results have shown successful applicability of the SBFFBR system to treat this dairy wastewater. High COD removal efficiencies between 89.7 and 97% were achieved at average organic loading rates of 0.4 and 2.74 kg COD m-3 d-1, respectively.

[1]  Armando C. Duarte,et al.  Laboratory study of dairy effluent treatment by the rotating biological disc system , 1984 .

[2]  J. Keller,et al.  Full-scale demonstration of biological nutrient removal in a single tank SBR process. , 2001, Water science and technology : a journal of the International Association on Water Pollution Research.

[3]  M. Gavrilescu,et al.  Process engineering in biological aerobic waste‐water treatment , 1999 .

[4]  F. Omil,et al.  Carbon and nitrogen removal from a wastewater of an industrial dairy laboratory with a coupled anaerobic filter-sequencing batch reactor system. , 2001, Water science and technology : a journal of the International Association on Water Pollution Research.

[5]  P. Williams,et al.  A review of the performance of aerobic bioreactors for treatment of food processing wastewater , 2007 .

[6]  G. Najafpour,et al.  Performance of a three-stage aerobic RBC reactor in food canning wastewater treatment , 2006 .

[7]  B. Glennon,et al.  Oxygen mass transfer characteristics in a membrane-aerated biofilm reactor. , 1999, Biotechnology and bioengineering.

[8]  M. Sobhey,et al.  Treatment of a combined dairy and domestic wastewater in an up-flow anaerobic sludge blanket (UASB) reactor followed by activated sludge (AS system) , 2008 .

[9]  X. Zhan,et al.  Nutrient removal in a sequencing batch biofilm reactor (SBBR) using a vertically moving biofilm system , 2004, Environmental technology.

[10]  H. D. Stensel,et al.  Wastewater Engineering: Treatment and Reuse , 2002 .

[11]  Q. Yu,et al.  Development of a two-stage flexible fibre biofilm reactor for treatment of food processing wastewater. , 2003, Water science and technology : a journal of the International Association on Water Pollution Research.

[12]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[13]  Suntud Sirianuntapiboon,et al.  Sequencing batch reactor biofilm system for treatment of milk industry wastewater. , 2005, Journal of environmental management.

[14]  S. Venkata Mohan,et al.  Treatment of complex chemical wastewater in a sequencing batch reactor (SBR) with an aerobic suspended growth configuration , 2005 .

[15]  A. Mohseni-Bandpi,et al.  Biological Treatment of Dairy Wastewater by Sequencing Batch Reactor , 2004 .