Treatment of the terephthalic acid-containing wastewater using a biological-aerated filter.
ENVIRONMENTAL TECHNOLOGY(2014)
Abstract
In this paper, the biological-aerated filter (BAF) was employed to treat the wastewater containing terephthalic acid (TA). Factors that affected the efficiency of TA and CODCr removal were evaluated experimetally, including pH, hydraulic loading, hydraulic retention time (HRT) and TA volume loading. At pH 7-8, hydraulic loading rate 0.067-0.48m(3)/(m(2)h), HRT more than 3.5h and TA loading 0.040.15g/(m(3)d), the TA and CODCr removal efficiency was more than 93% and 87%, respectively. The mathematical model of matrix (TA) was obtained by Monod's relation and the experimental parameters of the model were 1.972g/(m(2)d) and 9.782mg/L.
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Key words
biological-aerated filter,terephthalic acid wastewater,hydraulic loading,TA volume loading
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