摘要
研究了造纸废水处理系统对邻苯二甲酸二丁酯(DBP)的去除特性。在厌氧-缺氧-好氧(A2/O)条件下,进行了相应的序批式试验,确定了水相和泥相中DBP降解的动力学参数,建立了去除动力学模型(考虑吸附作用),并对模型预测的结果与实际测量值进行了比较。结果表明,在不同的HRT下,DBP去除率达到94%,出水中只含微量的DBP(0～7μg·L-1);厌氧、缺氧、好氧的去除速率常数分别为0.56、0.85、1.00,均高于ASM2的推荐值,说明在同一污泥系统的厌氧和缺氧条件下,DBP也能被较好的降解;模型得到的各池混合液出水中DBP的质量浓度模拟结果与实测结果符合较好(误差<10%)。
The removal characteristics of Di-n-Butyl Phthalate（DBP） was studied in anaerobic/anoxic/oxic （A^2/O） wastewater treatment processes. A removal （biological degradation and sorption） model was formulated, and kinetic parameters were evaluated with batch experiments under anaerobic, anoxic, oxic conditions. The resulting model calculations were then compared with sampling campaigns performed on A^2/O process. The results showed that the removal efficiency of DBP in the A^2/O activated sludge processes is more than 94%. Effluent concentrations vary between 0-7 μg·L^-1. From the result ofbiodegradation kinetic tests, it can be concluded that DBP is well biodegraded under anaerobic/anoxic/oxic conditions, and the removal rate of DBP in anaerobic and anoxic conditions accounts for respectively 56% and 85% of that in oxic condition. The model can well forecast the effluent quality of anaerobic/anoxic/oxic tank of the A^2/O process, and the relative error is less than 10%.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第6期34-37,68,共5页
Technology of Water Treatment
基金
广东省节能减排重大专项(2008A080800003)
关键词
邻苯二甲酸二丁酯
厌氧-缺氧-好氧
迁移转化
生物降解
动力学
Di-n-butyl phthalate （DBP）
anaerobic-anoxic-oxie system
transformation
biodegradation
biodegradation kinetics
