Open AccessTREATMENT OF TAPIOCA WASTEWATER BY USING BIOLOGICAL HYBRID SYSTEM
Author(s) -
Phuoc Van Nguyen,
Phuong Thi Thanh Nguyen,
Thi-Thu Le
Publication year - 2009
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v12i2.2204
Subject(s) - effluent , biofilter , hydraulic retention time , pollutant , wastewater , nutrient , environmental science , pulp and paper industry , vietnamese , environmental engineering , chemistry , engineering , linguistics , philosophy , organic chemistry
Tapioca processing industry discharged into environment a significant amount of pollutants. Where, organic compounds, nutrient, and toxin CN- concentration exceeded Vietnamese discharged Standard up to hundreds of times. The study on biological hybrid system, combining aerobic biofilter and aerotank attained COD, N-NH3 treatment efficiencies in range of 98%, 95%, respectively at the optimal organic loading rate of 1 kg COD/m3.day, according to hydraulic retention time of one day. Biomass of microrganism in this system can reach to the value of 10,000 mg/L. The effluent reached to Vietnamese Standard 5945-2005, column B.