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DOI : ,    Vol.9, No.1, 33 ~ 39, 2001
Title
A Study on the Operating Characteristics of 4 Stage BNR with Media
박철휘Chul Hwi Park,정운택Woon Taeg Jung
Abstract
The objective of this study was to investigate the operating condition and the design parameter for the BNR in STP by 4 stage BNR with media. The effulent of primary settler in STP was fed to the pilot plant. The hydraulic retention time(HRT), temperature, COD/TKN ratio and COD/TP ratio were varied to examine the removal efficiency. In the HRT of 10, 8, 6 and 6hr(winter) at media reactor, the removal efficiencies of BOD, COD, SS, TN and TP were 80∼93.9%, 88∼92.7%, 86.2∼92.4%, 41.8∼62.6%, 43.3∼64.4% respectively, and showed the best efficiency at 6hr because of optimim organic loading rate. The media reactor could obtain a stable effulent quality in range of SNR of 1.5∼2.5㎎TKN/gMLVSS·hr by temperature and SDNR 2.2∼3.2㎎NO₃/gMLVSS·hr by COD/TKN ratio and COD/TP ratio due to the biomass.
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