【摘要】 采用光催化与电化学氧化相结合技术对兰炭废水进行降解试验。用石墨片和活性炭颗粒为三维电极材料,外加紫外光灯条件下分别考察外加电压、活性炭颗粒投加量、电解质浓度和二氧化钛光催化剂(P25)投加量等对纯苯酚溶液中苯酚和COD去除率的影响。结果表明,当外加电压10V、活性炭颗粒投加量8g、电解质浓度0.15mol/L、P25投加量0.6g时,1 000mg/L的苯酚溶液中3h时苯酚和COD的去除率分别达到81.11%和73.64%;以此工艺条件,对某兰炭企业产生的兰炭废水(COD32 700mg/L)进行降解试验,COD去除率为60.63%。更多还原

【Abstract】 Technology to combine photocatalytic and electrocatalytic oxidation was applied to degrade semi-coking wastewater.With graphite and activated carbon particles as three-dimensional electrode material,the simulated phenol solution was degraded with ultraviolet light.Effects of applied voltage,dosage of activated carbon particle,electrolyte concentration,and dosage of TiO2 photocatalyst(P25)on removal rates of phenol and COD in solution were investigated.The results show that removal rates of phenol and COD in solution are 81.11% and 73.64% respectively after three hours under the following conditions including applied voltage of 10 V,dosage of activated carbon particle of 8 g,electrolyte concentration of 0.15 mol/L,and dosage of P25 of 0.6 g.COD removal rate of semi-coking wastewater from a production plant(COD 32 700 mg/L)is 60.63% under the optimized conditions.更多还原