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Nutrient Removal Hybrid Process to Use Suspended and Attached Growth Microorganisms and Apply the Contact and Stabilization Process  

Kim, Man-Soo (Environmental Technology Institute, Dae-Yang Bio Tech Co., LTD.)
Park, Jong-Woon (Environmental Technology Institute, Dae-Yang Bio Tech Co., LTD.)
Lee, Sang-Ill (Department of Environment Engineering, Chungbuk National University)
Park, Chul-Whi (Department of Environment Engineering, University of Seoul)
Publication Information
Abstract
Nutrient removal hybrid process to use suspended and attached growth microorganisms and apply the contact and stabilization process was process obtaining good results to HRT within 6 hours to dominate nitrifier and to promote separation and growth of autotrophs and heterotrophs to pack with EPS(Expanded Poly-Styrene) media in nitrification reactor. An average effluent quality of this process was below 5.2 mg/L, 7.3 mg/L, 4.9 mg/L as $BOD_5,\;COD_{Mn}$, SS concentration and 6.8 mg/L, 0.6 mg/L as T-N, T-P concentration. Also, An average removal efficiency of this process was 94.6%, 79.8%, 94.9% as $BOD_5,\;COD_{Mn}$, SS and 70.8%, 76.9% as T-N, T-P. 16S-rRNA analysis result of microorganisms attached to EPS media was researched Nitrosomonas and Nitrosococcus blown to ammonia-oxidizing bacteria cluster to include Gallionella and these microorganisms were researched to involve about 6% of biofilm attached EPS media. Consequently, this process was treated below 10 mg/L and 1.0mg/L as T-N, T-P concentration at short hydraulic retention time(about 6 hr) to dominate nitrifier.
Keywords
Nitrification; Denitrification; Dephanox; EPS(Expanded Poly Styrene); Hybride;
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