双酚A冲击对活性污泥毒性的影响研究

Effect of High Load Impact of BPA on Sludge Toxicity

在SBR系统中，控制进水COD浓度稳定在300mg／L左右，分别以初始浓度为20和40mg／L的双酚A（BPA）对其进行冲击试验，考察污泥毒性的变化规律，同时分析水相中COD以及水、泥相中BPA含量的变化规律。结果表明，BPA冲击过程会导致污泥有机毒性升高，冲击初期污泥毒性抑制率在40％～60％之间波动，后期稳定在38％～43％之间，且污泥有机毒性的上升幅度与BPA初始冲击浓度呈正相关关系。

In order to investigate the effect of BPA on sludge toxicity, synthetic wastewater containing original BPA concentrations of 20 mg/L and 40 mg/L was fed into two SBRs. The influent COD concentrations were controlled at around 300 mg/L. The COD concentrations in wastewater and BPA contents in both wastewater and sludge were analyzed. The results showed that the inhibition rate of sludge toxicity fluctuated between 40% and 60% in the beginning and maintained at 38% to 43% in the end. There was a positive correlation between sludge toxicity and initial BPA concentration.