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논문 기본 정보

자료유형
학술저널
저자정보
정병길 (동의대학교) 장성호 (부산대학교)
저널정보
한국환경기술학회 한국환경기술학회지 한국환경기술학회지 제21권 제1호
발행연도
2020.1
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1 - 6 (6page)

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초록· 키워드

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The purpose of this study was to evaluate the field applicability of UF-NF(Ultrafiltration-Nanofiltration) membrane process as an alternative technology of evaporator in the industrial wastewater treatment system of consigned wastewater management companies. Raw water was used the wastewater before entering the evaporator. The pilot-scale UF-NF process for consigned wastewater treatment was produced with a treatment capacity of 100 m3/d and three UF and five NF membranes were installed, respectively. As a result of water quality analysis before and after UF-NF membrane treatment, the average concentrations of raw water was TDS 31,200 mg/L, Cl- 16,500 mg/L, BOD5 7,080 mg/L, CODCr 26,200 mg/L, TOC 6,650 mg/L, T-N 1,852 mg/L, T-P 6.93 mg/L, SS 35 mg/L, respectively. For UF treated water, the average concentrations were TDS 30,900 mg/L, Cl- 15,800 mg/L, BOD5 6,900 mg/L, CODCr 23,900 mg/L, TOC 6,640 mg/L, T-N 1,530 mg/L, T-P 6.81 mg/L and SS undetected, respectively. For NF(70) treated water, the average concentrations are TDS 25,700 mg/L, Cl- 14,100 mg/L, BOD5 6,810 mg/L, CODCr 22,800 mg/L, TOC 5,850 mg/L, T-N 1,370 mg/L, T-P 5.34 mg/L and SS undetected, respectively. Also for NF(90) treated water, the average concentrations are TDS 21,360 mg/L, Cl- 12,600 mg/L, BOD5 6,020 mg/L, CODCr 21,000 mg/L, TOC 4,840 mg/L, T-N 1,360 mg/L, T-P 5.19 mg/L, SS undetected, respectively. Therefore, it is difficult to satisfy the effluent quality standards in the treatment of consigned wastewater using the UF-NF process. When a filtration process was installed for meeting or better the standard water quality, RO membrane must be installed and run.

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