감마선 처리를 이용한 고무공장 폐수의 생물독성 저감 : Toxicity Reduction of Wastewater from a Rubber Products Manufacturing Factory by Gamma-ray Treatment
Toxicity Reduction of Wastewater from a Rubber Products Manufacturing Factory by Gamma-ray Treatment
- 주제(키워드) Acute toxicity , Daphnia magna , Gamma-rays , Ozone , Wastewater
- 발행기관 한국물환경학회
- 발행년도 2006
- 총서유형 Journal
- UCI G704-000646.2006.22.5.001
- KCI ID ART001131488
초록/요약
Both raw wastewater and effluent from a rubber products manufacturing factory were found to be toxic to Daphnia magna though the effluent satisfied current water quality standards. Thus, in order to reduce toxicity, advanced oxidation processes (AOPs) such as gamma-ray (-ray) treatment and ozonation (O3) were applied. A combined -rays/O3 treatment at 20 kGy after coagulation significantly reduced toxicity of raw wastewater, changing 48-h toxic unit (TU) value from 201.21 to 23.92. However, toxicity of treated water was higher than that of effluent (TU = 12.15). This shows limitation of gamma-ray treatment to remove toxicity of raw wastewater. In case of effluent, the combined -rays/O3 treatment at 20 kGy efficiently decomposed toxic compounds down to non toxic level. This work strongly supports the necessity of toxicity reduction evaluation as well as toxicity-based effluent management.
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