IC反应器-多段式好氧组合工艺处理核黄素废水

Treatment of Riboflavin Wastewater by IC Reactor-Multi-Stage Aerobic Combination Process

为实现核黄素废水COD和NH3-N达标排放,采用IC反应器与多段式好氧组合工艺进行中试。结果表明,反应器经过50 d启动运行,进水COD和NH3-N质量浓度平均分别为20.55 g/L和1.252 g/L,IC反应器COD容积负荷为4.6 kg/(m^3·d),COD去除率高达94%,但对NH3-N去除基本没有效果;反应第12天,通过向好氧段投加碳源并调节pH,运行3 d后,NH3-N容积负荷0.3 kg/(m^3·d),NH3-N去除率可达99%。经过组合工艺处理后,出水COD和NH3-N质量浓度分别稳定在600 mg/L和5 mg/L以下。

In order to reach the standard of COD and NH3-N emission of riboflavin wastewater,a pilot test was carried out using an IC reactor and a multistage aerobic combination process.The results showed that after 50 d of start-up operation of the reactor,the average mass concentrations of COD and NH3-N in the influent were 20.55 g/L and 1.252 g/L,respectively.The COD volumetric load of the IC reactor was 4.6 kg/(m3·d),the COD removal rate was 94%,and the removal of NH3-N had little effect;on the 12th day of the reaction,by adding a carbon source to the aerobic section and adjusting the pH,after 3 d of operation,the NH3-N volumetric load was 0.3 kg/(m^3·d),and the NH3-N removal rate was 99%.After treatment by combined process,the effluent COD and NH3-N mass concentrations were stable below 600 mg/L and 5 mg/L,respectively.