| Title |
Comparative Study on Acute Toxicity of Treated Effluent Containing Salt using Daphnia magna and Vibrio fischeri |
| Authors |
김종민 ( Jongmin Kim ) ; 신기식 ( Kisik Shin ) ; 유순주 ( Soonju Yu ) ; 이정서 ( Jungseo Lee ) ; 김웅기 ( Woongki Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.5.453 |
| Keywords |
acute toxicity; Daphnia magna; effluent; salt; ionic substance; Vibrio fischeri |
| Abstract |
This paper aims to evaluate the results of acute toxicity testing with Daphnia magna and Vibrio fischeri and characteristics of ionic substance of treated effluent which contained salt. Acute toxicity with Daphnia magna and Vibrio fischeri and salinity of 19 samples (4 business categories) were analysed. Salinity of effluent could explain the fluctuation of toxicity with D. magna about 66% ~ 91% (r2 = 0.66 ~ 0.91). The results of acute toxicity testing with V. fischeri of treated effluent (aggregate manufacture facilities) did not indicate toxicity (TU = 0), whereas that of chemical manufacture facilities indicated toxicity. V. fischeri, a candidate test organism, seemed suitable test organism for acute toxicity testing of effluent except high salinity (above 65‰ ~ 70‰) in aggregate manufacture facilities (nonmetalic minerals facilities). The performance of ion composition about treated effluent of surveyed facilities indicated that ion concentration of Na+ (5,740 mg/L) and Cl- (9,727 mg/L) showed high level among 6 major ions (Na+, K+, Ca2+, Mg2+, SO4 2-, Cl-) in effluent of nonmetalic minerals facilities. In addition, Clion seemed to influence the D. magna survival rather than Na+ ion. |