填料及H_2O_2对微电解深度处理石化废水效果的影响

Effect of packing and H_2O_2 dosage on advanced treatment of petrochemical wastewater by micro-electrolysis

以多孔活性炭结构的多元合金材料为填料,采用微电解催化还原氧化深度处理石化废水。考察了静态试验条件下多元合金填料的类型、填料投加量、废水初始pH值、反应时间、H_2O_2投加量对反应效果的影响。筛选出最佳的微电解一体化填料为Yonker-IME-L02及其最佳投加量为100 g/L,在pH值为2.1,反应时间为90 min的条件下,CODCr的质量浓度从初始的492.5 mg/L降到311.9 mg/L,去除率为36.67%。在以上条件下,同时投加0.50 g/L的H_2O_2强化反应后,CODCr的质量浓度可以降到99.57 mg/L,去除率提升至79.78%。处理出水CODCr浓度达到GB 8978—1996《污水综合排放标准》中的一级标准的要求。

Using multielement alloy material with structure of porous activated carbon as the packing, a test on advanced treatment of petrochemical wastewater by micro-electrolysis catalytic reduction-oxidation technology was carried out. The influence of multielement alloy packing types, packing dosage, initial pH value of the wastewater, reaction time and H2O2 dosage, on the reaction effect were investigated through static test. Yonker-IME-L02 was screened to be the optimal microelectrolysis integrated packing, and its optimal dosage was pointed out to be 100 g/L. When the pH value was 2.1, the reaction time was 90 min, the mass concentration of CODCr decreased from 492.5 to 311.9 mg/L with a removal rate of 36.67%. Under the above condition, dosing 0.50 g/L of H2O2 to strengthen the reaction, the mass concentration of CODCr in wastewater decreased to 99.57 mg/L, the removal rate was improved to 79.78%. The mass concentration of CODCr of the effluent water after the treatment could meet the requirement of grade 1 in GB 8978—1996 Intergrated Wastewater Discharge Standard.