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Analysis of the Substrate Removal Characteristics of TPA Using OUR and NUR Tests, and Simulation with ASM1  

Jung, In-Chul (Busan Metropolitan City Environmental Installations Corporation)
Lee, Sung-Hak (Enverionsoft co. ltd.)
Sung, Nak-Chang (Department of Earth & Environmental Engineering, Dong-A University)
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Abstract
In this study, nitrate uptake rate(NUR) and oxygen uptake rate(OUR) tests were conducted for the assessment of application of Terephtalic acid(TPA) by-product as an alternative external carbon source for sewage treatment plant(STP). With the ASM1 installed in GPS-X the substrate removal characteristic was investigated with simulation by obtained data from NUR and OUR test. As a result, the fraction of RBDCOD(readily biodegradable COD) was mort than 90% and specific denitrification rate was observed about 8.00 mg $NO_3^-$-N/g VSS/hr that was similar to conventional external carbon source. In the next step, sensitivity analysis for heterotrophic biomass in ASM1 was conducted. Optimized parameters of ${\mu}_{max,H}$, $K_s$, ${\eta}_g$, and $b_H$ were 6.60/day, 23.3 mg/L, 0.88, and 0.54/day, respectively. Then, relative mean squared error(RMSE) was reduced to about 40%. Optimized parameters value were well corresponded with the substrate removal characteristics of high maximum and final endogenous specific OUR and high specific NUR.
Keywords
TPA By-product; Alternative Carbon Source; Substrate Removal Characteristics; Simulation; Sensitivity Analysis; Parameter Estimation;
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Times Cited By KSCI : 4  (Citation Analysis)
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