Water for future (물과 미래)
- Volume 25 Issue 2
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- Pages.61-66
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- 1992
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- 1738-9488(pISSN)
Acute Toxicity on Daphnia Magna for Electric Cable Factory Wastewater
물벼룩에 의한 전선공장폐수의 급성독성가
- Chae, Su-Gwon (Environment, Seoul Health Junior college) ;
- Kim, Nam-Cheon ;
- Kim, Geon-Heung
- Published : 1992.03.01
Abstract
This study was to determine the static acute toxicity on Daphnia magna for the Electric cable Factory Wastewater. Activated sludge process was used to treat the wastewater with three different F/M ratios, 0.36, 0.2, 0.1 mg COD/day.mg MLSS. The results of laboratory bioassay with Daphnia magna were as follows. 1)24hr, 48hr-LC$ of the influent were 17.33% and 11.73%. 2)24hr-LC $ of effluents treated with F/M ratio 0.36,0.26 and 0.1mg COD/day.mg MLSS were 26.69% 32.70% and 38.36% respectively, 48-LC$ of these effluents were 14.48% 27.88% and 31.58% respectively. 3)According to various F/M ratios, the ratios of dffluent 48hr-LC$ to filtrated 48hr-LC$ were 1.58, 1.83 and 1.47respectively 4)Activated sludge process effluents treated with activated carbon had little toxicity on Daphnia magna.
본 실험은 3개의 F/M 비 0.36, 0.2, 0.1 mg COD/daymg MLSS로 실험실 규모의 활성슬러지법에 의해 전선공장폐수를 처리사고, 유입수와 유출수의 Daphnia magna에 대한 급성독성을 연구하였다. Daphnia Magna를 이용하여 실험실 bioassay를 수행한 결과는 다음과 같다. 1) 유입수의 24hr, 48hr-LC50은 각각 17.33%, 11.73%이었다. 2) F/M 비 0.36, 0.20, 0.10 mg COD/daymg MLSS로 운반된 유출수의 24hr-LC50은 각각 26.69%, 32.70%, 38.36%ldau, 48hr-LC50은 각각 14.58%, 27.88%, 31.58% 이었다. 3) 활성슬러지 시스템의 유출수와 그 유출수의 여과액에 대한 48hr-LC50의 비는 F/Mql 변화에 따라 각각 1.58, 1.83, 1.47로, 여과함으로써 독성이 감소하였다. 4) 활성슬러지 시스템의 유출수를 다시 활성\ulcorner으로 흡착한 처리수는 Daphnia magna에 거의 독성을 주지 않았다.
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