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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Toxicity identification and evaluation (TIE) of a petroleum refinery wastewater
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Toxicity identification and evaluation (TIE) of a petroleum refinery wastewater

机译：炼油废水的毒性鉴定与评估（TIE）

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摘要

Petroleum refineries generate large amounts of wastewaters, which can have acute/chronic toxicity toward aquatic organisms. Previous studies have shown that many contaminants can be responsible for this toxicity, among them ammonia, sulfide, cyanide, phenols and hydrocarbons. In the study reported herein, the cause of the chronic toxicity of a biotreated petroleum refinery wastewater was investigated by applying the TIE methodology using the microcrustacean Ceriodaphnia dubia. Five samples were analyzed, and the results suggest that copper is the primary toxicant, showing a strong correlation with wastewater toxicity in Phase III. Other metal contaminants, such as zinc and nickel, are present in the samples at toxic concentrations and these may also contribute (to a lesser degree) toward the toxicity. In the case of one sample, the toxicity was attributed to polycyclic aromatic hydrocarbons (PAHs), possibly benzo(a)pyrene, which was present at a concentration toxic to C. dubia. Although the values for the physicochemical parameters of the samples were below Brazilian environmental regulation limits (CONAMA 430), this was not sufficient to prevent chronic toxicity toward aquatic life, indicating that these limits are relatively high.
机译：石油精炼厂会产生大量废水，这些废水会对水生生物产生急性/慢性毒性。先前的研究表明，许多污染物可能是造成这种毒性的原因，其中包括氨，硫化物，氰化物，酚和碳氢化合物。在本文报道的研究中，通过使用微甲壳动物杜鹃Ceriodaphnia dubia的TIE方法研究了生物处理的石油精炼厂废水的慢性毒性的原因。对五个样品进行了分析，结果表明铜是主要的有毒物质，与第三阶段的废水毒性有很强的相关性。样品中的其他金属污染物（例如锌和镍）以有毒浓度存在，它们也可能（以较小的程度）促进了毒性。在一个样品的情况下，毒性归因于多环芳烃（PAH），可能是苯并（a）re，其浓度对杜鹃梭菌有毒。尽管样品的理化参数值低于巴西环境法规限值（CONAMA 430），但这不足以防止对水生生物的慢性毒性，表明这些限值相对较高。

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