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자료유형
학술저널
저자정보
저널정보
한국환경보건학회 한국환경보건학회지 한국환경보건학회지 제36권 제6호
발행연도
2010.1
수록면
502 - 509 (8page)

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초록· 키워드

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In this study, the characteristics of phosphorous removal due to iron compound precipitation by iron electrolysis in anoxic and oxic processes in an iron precipitation device were analyzed. During the device operation period, the average concentration of BOD, T-N, and T-P were 219.9 mg/l, 54.6 mg/l and 6.71 mg/l, respectively. The BOD/CODCr ratio was 0.74, and the BOD/T-N and BOD/T-P ratios were 4.0 and 32.8, respectively. The removal rate of organic matter was very high at 91.6% or higher, and that of nitrogen was 80.5%. The phosphorous concentration in the treated water was 0.43 mg/l (0.05-0.74 mg/l) on average, and the removal efficiency was high at 90.8%. The soluble T-P concentrations in the anoxic reactor, oxic reactor (II) and final treated water were 1.99 mg/l, 0.79 mg/l and 0.43 mg/l, respectively,which indicated that the phosphorous concentration in the treated water was very low. Regardless of the changes in the concentrations of organic matter, nitrogen and phosphorous in the influent, the quality of the treated water was relatively stable and high. The removal rate of T-P somewhat increased with the increase in the F/M ratio in the influent, and it also linearly increased in proportion to the T-P loading rate in the influent. In the treatment process used in this study,phosphorous was removed by the precipitated iron oxide. Therefore, the consumption of organic matter for biological phosphorus removal was minimized and was mostly used as the organic carbon source for the denitrification in the anoxic reactor. This treatment process is economic and does not require the supply of additional organic matter.

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