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논문 상세정보

호기성 고정생물막반응기에서 동일 질량부하의 수리학적 및 농도충격부하시 반응의 비교

Comparison of Aerobic Fixed-film Process Response to Quantitative and Hydraulic Shock for the Same Increases in Mass Loading

Abstract

The objective of this study was to examine and compare to transient response to quantitative and hydraulic shocks which produce equal changes in mass rate of organic feed in aerobic fixed-film process. The general experimental approach was to operate the system at several growth rates under steady-state(pre-shock) conditions, then to apply step changes during day 3 in dilution rate(hydraulic shock) , or feed concentration(Quantitative shock) at the same organic mass loading rate. Performance was assessed in both the transient state and the new steady-state (post- shock). Shock load of different type did not produced equivalent disruptions of effluent quality for equal increases in mass loading rate. Based on effluent concentrations, a hydraulic and a Quantitative shock at the same mass loading caused equal increase in total effluent COD, but the increase was primarily a result of suspended solids the hydraulic shock and COD in the quantitative shock. The time which effluent COD came to peak values were about 32~48 hours at the low organic loads and 52 ~ 72 hours at the high organic loads, respectively A quantitative shock produced a much greater increase in effluent COD than did a hydraulic shock at the same mass loading. Mean and peak values of effluent concentration weve increased in 2.8~4.2 times at low organic loading rate, 5.2~6.6 times at the high organic loading rate, respectively. Key words : Aerobic fixed-film reactor, Quantitative shock, hydraulic shock, mass loading rate.

참고문헌 (14)

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  12. Development of Synthetic Media for Biological Treatment of Municipal and Industrial Wastewaters , Bryan,E.H. , Proceedings of the 1st International Conf. on Fixed-Film Biological Process / v.,pp.89-114, 1982
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