工业园区典型行业废水的理化性质及急性毒性

发布时间：2018-02-25 21:22

本文关键词： 企业废水发光细菌理化性质急性毒性　出处：《环境化学》2016年12期 　论文类型：期刊论文

【摘要】：利用理化检测和发光细菌法对天津市某工业园区内16家行业典型企业的进出水进行理化分析和急性毒性试验.结果表明,16家企业原水水质较差,且废水的污染特征差异明显.发光细菌毒性试验表明,16家企业原水对发光细菌的急性毒性等级在重毒以上的比例占到81.25%.预处理后,废水的常规指标基本上满足园区污水处理厂收水标准,但部分企业出水中仍能检出一定浓度的非常规污染物.预处理后,企业废水的整体毒性得到有效削减,低毒和中毒的比例分别达到了25%和37.5%.相关性分析实验表明,企业原水急性毒性与各化学参数间均无相关性,企业出水的急性毒性则与化学需氧量(r=-0.589,P0.05)、总磷(r=-0.566,P0.05)、镍(r=-0.670,P0.01)、铊(r=-0.659,P0.01)、铅(r=-0.684,P0.01)、镉(r=-0.678,P0.01)、六价铬(r=-0.682,P0.01)具有显著相关性.将理化性质与急性毒性指标有机结合起来,能够更加全面、准确的判断工业废水水质状况.建议在制订工业园区纳管标准时设置急性毒性指标.
[Abstract]:The physical and chemical analysis and acute toxicity test of 16 typical enterprises in Tianjin Industrial Park were carried out by physicochemical detection and luminescent bacteria method. The results showed that the raw water quality of 16 enterprises was poor. The toxicity test of luminescent bacteria showed that the proportion of acute toxicity of raw water to luminescent bacteria was 81.250.After pretreatment, the ratio of acute toxicity of raw water to luminescent bacteria was more than 81.250.After pretreatment, the ratio of acute toxicity of raw water to luminescent bacteria was 81.25%. The conventional index of wastewater basically meets the standard of wastewater treatment plant, but some enterprises can still detect a certain concentration of unconventional pollutants in the effluent. After pretreatment, the overall toxicity of the wastewater is effectively reduced. The ratio of low toxicity and poisoning reached 25% and 37.5 respectively. Correlation analysis showed that there was no correlation between acute toxicity of raw water and chemical parameters. The acute toxicity of effluent from enterprises was significantly correlated with chemical oxygen demand (COD) -0.589n (P0.05N), total phosphorus (r-0.566N) P0.05N, nickel r-0.670 (P0.01C), thallium r-0.659m (P0.01N), lead r-0.684P0.01( P0.01), cadmium r-0.678n (P0.01N), hexavalent chromium (r-0.682ng) (0.01g), and the combination of physical and chemical properties with acute organic indexes. It is suggested that the acute toxicity index should be set up in the formulation of industrial park standards for industrial waste water quality.
【作者单位】：天津市环境保护科学研究院;
【基金】：国家“十二五”水体污染控制与治理科技重大专项“重点流域典型工业园区水污染防治技术评估和管理制度研究”(2014ZX07504-005)资助~~
【分类号】：X703;X171.5

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