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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 305 - 313 (9page)
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Objectives: The objective of this study is to identify toxicants causing acute toxicity in effluents from thealuminum rolling industry that violate the discharge limits in Korea.
Methods: Whole effluent toxicity tests (WET) were conducted on effluent discharged from the aluminum rollingindustry following the US EPA WET test methods. We collected effluent samples three times and evaluatedacute toxicity by using Daphnia magna. We employed toxicity identification evaluation (TIE) procedures toidentify toxicants causing toxicity in the effluent.
Results: No specific chemical groups were identified in the seven different manipulations applied to the ofwastewater effluent samples showing 1.3 toxic units (TU) according to the TIE phase I procedures. Waterquality parameters for water hardness, electric conductivity and heavy metals (Mn) were 4,322 mg/l asCaCO3, 11.39 mS/cm, and 5,551 μg/l, respectively. Considering water hardness and reference toxicity, highconcentrations of Mn can be disqualified from the causative toxicants. Consequently, high ionicconcentrations of Na+(1,648 mg/l), Ca2+(1,048 mg/l), Mg2+(1,428 mg/l) and SO42-(7,472 mg/l) were identifiedto be causative toxicants. Water hardness and electric conductivity exceed the EC50 value obtained bybiological toxicity tests using Daphnia magna.
Conclusion: According to TIE procedures, high salt concentration is determined to be a major toxicant in theeffluent of agro-industrial wastewater treatment plants receiving wastewater from the aluminum rolling industry.
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참고문헌 (15)
참고문헌 신청
/ / Standard Methods for the Examination of Water and Wastewater, Acute toxicity test method of the Daphnia magna Straus (Cladocera, Crustacea), ES 04751.1 / Ministry of Environment
/ / Water Quality and Ecosystem conservation Act / Ministry of Environment
/ 1991 / Methods for aquatic toxicity identification evaluation, Phase I toxicity characterization procedure / EPA/600/6-91/003
/ 1993 / Methods for aquatic toxicity identification evaluation, Phase III toxicity confirmation procedures for samples exhibiting acute and chronic toxicity / EPA/600/R-92/081
Burgess RM / 2013 / Effectdirected analysis (EDA) and toxicity identification evaluation (TIE): complementary but different approaches for diagnosing causes of environmental
/ / Water Quality and Ecosystem conservation Act / Ministry of Environment
/ 1991 / Methods for aquatic toxicity identification evaluation, Phase I toxicity characterization procedure / EPA/600/6-91/003
/ 1993 / Methods for aquatic toxicity identification evaluation, Phase III toxicity confirmation procedures for samples exhibiting acute and chronic toxicity / EPA/600/R-92/081
Burgess RM / 2013 / Effectdirected analysis (EDA) and toxicity identification evaluation (TIE): complementary but different approaches for diagnosing causes of environmental
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