紫外芬顿氧化法处理固定床气化生化进水的可生化性研究

Study on Biodegradability of Biochemical Influent in Fixed Bed Gasification by UV Fenton Oxidation Technology

为研究紫外芬顿氧化法处理固定床气化生化进水的可生化性,采用2 L/h废水处理量的实验装置,利用单因素及正交实验法,研究了FeSO4加入量、H2O2加入量及紫外灯功率对可生化性(B/C)的影响规律,优化得到最佳工艺参数,同时在最佳工艺参数下开展了连续可生化性的实验研究。结果表明:3个实验条件对可生化性影响的大小顺序为:H2O2加入量>紫外灯功率>FeSO4加入量;最佳工艺参数:H2O2加入量为30 mL/L,紫外灯功率为2.5 kW,FeSO4加入量3.5 g/L。最佳工艺条件下连续72 h实验结果显示,出水可生化性稳定且均高于0.3,较好地满足了生化处理进水要求。

The test device with 2 L/h wastewater treatment volume was used to study the biodegradability of the fixed bed gasification biochemical influent by the UV Fenton oxidation method.The influence of FeSO4 dosage,H2O2 dosage and UV lamp power on biodegradability(B/C)was studied with the single factor and orthogonal test method.The optimal process parameters were obtained,and the continuous biodegradability experiment was carried out under the optimal process parameters.The results showed that the influential sequence of the three experimental conditions on the biodegradability was H2O2 dosage>UV lamp power>FeSO4 dosage.The optimal process parameters:H2O2 dosage was 30 mL/L,UV lamp power was 2.5 kW,and FeSO4 dosage was 3.5 g/L.Also,the 72 h continuous test under the optimal process condition showed that the biodegradability of effluent was stable and higher than 0.3,which met the influent biotreatment requirement.