循环流一体式生物反应器处理ABS树脂生产废水

Treatment of ABS Resin Wastewater with Integrated Cycling Bioreactor

采用气流提升-微孔曝气循环流一体式生物反应器处理ABS树脂生产废水,在水力停留时间（HRT）为24h,进水CODCr为800~1 000 mgL时,单级反应器出水CODCr均稳定在80 mgL以下,去除率达88%以上,有机氮去除率达99%以上。废水碱度达到300~450 mgL（以CaCO3计）时,反应区pH可保持在6.7~7.5,出水氨氮浓度稳定在5 mgL以下,处理负荷显著高于传统工艺。气相色谱-质谱（GC-MS）及三维荧光光谱结果表明,ABS树脂生产废水中的有机腈和芳香族有机物可得到有效去除。

An integrated cycling bioreactor with gas lift and microporrus aeration was used for the treatment of ABS resin wastewater. When the hydraulic retention time of the reactor was 24 h and the influent CODcr was 800-1 000 mg/L, the effluent CODcr was less than 80 mg/L. CODcr removal efficiency was higher than 88% and organic nitrogen removal efficiency higher than 99% by the single reactor. When the influent alkalinity was 300-450 mg/L （ as CaCO3 ）, the pH of the mixed liquid in the reactor could remain at 6.7-7.5, and the effluent NH3-N was less than 5 mg/L. The treatment load of the reactor was significantly higher than that of the traditional process. GC-MS and three-dimensional fluorescence spectrum analyses efficiently removed from ABS resin wastewater. indicated that organic nitrile and aromatic organics could be