UASB处理甲苯氧化废水试验研究

Study on toluene-oxidized wastewater treatment with UASB reactor

采用UASB反应器处理甲苯氧化废水，接种颗粒污泥，当进水ρ（COD）为6000mg／L，运行负荷（以COD计）为6kg／（m^3·d）时，COD去除率达到84%左右，出水ρ（COD）为853～985mg／L，其适宜的运行条件为进水pH值为5～6，ρ（COD）为5000-6000mg／L，水力停留时间为24h，容积负荷（以COD计）为5～6kg／（m^3·d）。通过对污泥的培养驯化和合理的运行方式，甲苯对厌氧消化的抑制影响可以得到很好的控制。

Wastewater from oxidizing toluene is treated by using UASB reactor and seeded with granular sludge. When the UASB influentρ（COD） is 6 000 mg/L,and the volumetric COD loading rate reaches 6 kg/（m3 · d）, COD removal rate reaches 84% ,and the effluent COD is 853-985 mg/L. The optimum conditions are that the pH value of influent is 5-6, the influent ρ（COD） is 5 000-6 000 mg/L, HRT is 24 h and the volumetric COD loading rate is 5-6 kg/（m^3 · d）, The result is that through cultivating the anaerobic sludge and controlling performance parameters, inhabiting effect of toluene on anaerobic digestion is almost elimilnated.