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石化废水易降解成分对活性污泥耗氧抑制毒性评价的干扰因素

王钦祥 于茵 周岳溪 杨茜 陈学民 伏小勇

王钦祥, 于茵, 周岳溪, 杨茜, 陈学民, 伏小勇. 石化废水易降解成分对活性污泥耗氧抑制毒性评价的干扰因素[J]. 环境科学研究, 2016, 29(1): 92-98.
引用本文: 王钦祥, 于茵, 周岳溪, 杨茜, 陈学民, 伏小勇. 石化废水易降解成分对活性污泥耗氧抑制毒性评价的干扰因素[J]. 环境科学研究, 2016, 29(1): 92-98.
WANG Qinxiang, YU Yin, ZHOU Yuexi, YANG Qian, CHEN Xuemin, FU Xiaoyong. Interference of Activated Sludge Oxygen Uptake Toxicity Evaluation by Readily Degradable Compositions in Petrochemical Wastewater[J]. Research of Environmental Sciences, 2016, 29(1): 92-98.
Citation: WANG Qinxiang, YU Yin, ZHOU Yuexi, YANG Qian, CHEN Xuemin, FU Xiaoyong. Interference of Activated Sludge Oxygen Uptake Toxicity Evaluation by Readily Degradable Compositions in Petrochemical Wastewater[J]. Research of Environmental Sciences, 2016, 29(1): 92-98.

石化废水易降解成分对活性污泥耗氧抑制毒性评价的干扰因素

基金项目: 国家水体污染控制与治理科技重大专项(2012ZX07201-005)

Interference of Activated Sludge Oxygen Uptake Toxicity Evaluation by Readily Degradable Compositions in Petrochemical Wastewater

  • 摘要: 为评价某石化混合废水的毒性,采用活性污泥耗氧速率抑制试验研究不同φ(石化废水)对活性污泥中不同菌群的抑制及其影响因素. 结果表明,所用石化废水对活性污泥中的硝化细菌具有明显毒性,其EC50(半抑制效应浓度,以φ计)为9%左右;同时,该废水对异养菌的耗氧具有较强的促进作用,φ(石化废水)为100%时IH(异养菌耗氧速率抑制率,131%)最高,这种促进作用对RT(总耗氧速率)测定有显著影响(R=0.991,P<0.05),因此,仅以RT评价废水毒性容易造成对废水真实毒性的低估. 5种常见易降解基质(乙酸钠、葡萄糖、甲醇、生活污水、丙酸钠)中,ρ(甲醇)为15 mg/L时对异养菌促进效果显著(P<0.05),促进率达50%以上;而在高浓度条件下,乙酸钠、葡萄糖、甲醇、丙酸钠对异养菌均有显著促进作用(P<0.05),RH(异养菌耗氧速率)最高提高了182%. 研究显示,石化废水中的乙酸盐等易降解成分是活性污泥耗氧速率抑制试验的重要干扰因素.

     

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出版历程
  • 收稿日期:  2015-07-26
  • 修回日期:  2015-10-30
  • 刊出日期:  2016-01-25

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