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KMID : 1024520140230071269
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Journal of the Environmental Sciences
2014 Volume.23 No. 7 p.1269 ~ p.1275
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Comparison between Ecotoxicity using Daphnia magna and Physiochemical Analyses of Industrial Effluent
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Lee Sun-Hee
Lee Hak-Sung
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Abstract
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Ecotoxicity assessments with the physiochemical water quality items and the bioassay test using Daphnia magna
were conducted for 18 selected effluents of 6 industrial types (metal processing, petroleum refining, synthetic textile
manufacturing, plating, alcohol beverage manufacturing, inorganic compound manufacturing) being detected toxicity
from industrial effluent in Ulsan city, and the interrelationship between total toxic unit (∑TU) and concentrations of
Water Quality Conservation Act in Korea were investigated. The average toxic unit(TU) of effluents for 6 industrial
types displayed the following ascending order: petroleum refining (0.2) < synthetic textile manufacturing (0.6) <
alcohol beverage manufacturing (0.9) < metal processing (1.3) ≤ inorganic compound manufacturing (1.3) < plating
(3.0). These values were less than effluent permission standard. Based on the result of substances causing ecotoxicity,
the correlation analysis was not easy because most of heavy metals were not detected or were less than effluent
permission standard. Toxicological assessment of industrial effluent was suitable for the evaluation of the mixture
toxicity for pollutant. The whole effluent toxicity test using a variety of species was needed for the evaluation of
industrial wastewater
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KEYWORD
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WET(whole effluent toxicity), Daphnia magna, Toxic unit(TU), Industrial effluent
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