SBR法处理合成洗涤剂生产废水的动力学分析

Kinetic Analysis for SBR Treatment of Wastewater from Synthetic Detergent Production

考察了合成洗涤剂生产废水中十二烷基苯磺酸钠(LAS)在SBR法反应期的降解规律,并对其生物降解动力学进行了初步分析。结果表明:在(23.0±0.5)℃范围内,LAS浓度≤90 mg/L的合成洗涤剂生产废水,在SBR反应器内经过6 h左右的曝气反应,其LAS浓度就可以达到国家排放标准。在低基质浓度条件下,Monod方程和一级反应动力学方程都能很好地模拟LAS的生物降解过程,并求定了相应的动力学参数。

Degradation regularity of Linear Alkylbenzene Sulfonates（LAS） was studied in the reaction stage during the treatment wastewater from synthetic detergent production by SBR process, and the primary analysis of bio-degradation kinetics of LAS was reported. The results showed that after aerating for about 6 hours, the concentration of LAS in the wastewater can reach national effluent standard under such experimental conditions （initial concentration of LAS ≤ 90 mg/L;temperature range： （23.0 ± 0.5） ℃）. Bio-degradafion process of LAS can be simulated well by beth Monod model and the first order reaction equation under the condition of low substrate concentration. The corresponding kinetic parameters were determined.