摘要
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 mgL时,单级反应器出水CODCr均稳定在80 mgL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 mgL(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 mgL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
出处
《环境工程技术学报》
CAS
2014年第5期367-372,共6页
Journal of Environmental Engineering Technology
基金
国家水体污染控制与治理科技重大专项(2012ZX07201-005)
关键词
ABS树脂生产废水
水力停留时间
碱度
有机腈
脱氮
ABS resin wastewater
hydraulic retention time
alkalinity
organic nitrile
nitrogen removal