염 함유 폐수처리수에 대한 Daphnia magna 및 Vibrio fischeri 급성독성 비교연구

Abstract

This paper aims to evaluate the results of acute toxicity testing with Daphnia mag<TEX>$Na^+$</TEX> and Vibrio fischeri and characteristics of ionic substance of treated effluent which contained salt. Acute toxicity with Daphnia mag<TEX>$Na^+$</TEX> and Vibrio fischeri and salinity of 19 samples (4 business categories) were a<TEX>$Na^+$</TEX>lysed. Salinity of effluent could explain the fluctuation of toxicity with D. mag<TEX>$Na^+$</TEX> about 66% ~ 91% (<TEX>$r^2=0.66{\sim}0.91$</TEX>). 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 <TEX>$Na^+$</TEX> (5,740 mg/L) and <TEX>$Cl^-$</TEX> (9,727 mg/L) showed high level among 6 major ions (<TEX>$Na^+$</TEX>, <TEX>$K^+$</TEX>, <TEX>$Ca^{2+}$</TEX>, <TEX>$Mg^{2+}$</TEX>, <TEX>$SO_4{^{2-}}$</TEX>, <TEX>$Cl^-$</TEX>) in effluent of nonmetalic minerals facilities. In addition, Clion seemed to influence the D. magna survival rather than <TEX>$Na^+$</TEX> ion.