ABR处理生活污水的指标沿程变化及动力学研究

试验研究中温(35℃)条件下,4隔室ABR处理生活污水时各隔室出水指标的沿程变化情况,研究结果表明:各隔室出水COD沿程递减,并且前3个隔室承担了去除COD的重要责任;各隔室的平均出水VFA沿程递减,说明ABR在处理低浓度生活污水时,存在着产酸、产甲烷相分离现象;实验结束时,发现前面隔室的污泥成灰色,泥水混合液较为粘稠,而最后2隔室中的污泥则在底部形成较稠密的污泥床。在实验结果的基础上建立了基质降解动力学模型,并对模型的计算值和实测值进行比较,误差在2%以内,说明该模型的建立是可行的,具有一定的实际意义。

Kinetics and Changes of Parameters by Anaerobic Baffled Reactor Treating Domestic Wastewater

Anaerobic baffled reactor (ABR) with four chambers was studied for treating domestic wastewater at 35℃ to evaluate change status of effluent parameters in each chamber. Results indicated that the effluent COD and voltaic fatty acid (VFA) in each chamber was descended along chambers and the most amount of COD was removed in the frontal three chambers. Acidity and methane separated was occurred when ABR treating domestic wastewater. The sludge in frontal chamber was grey with sticky compound of sludge and water while dense in the latter two chambers. The biochemical kinetics was established and mathematic model was validated with error of 2%, which indicated that the model was feasible and reasonable.