电催化氧化技术处理造纸废水的实验研究

Study on Treatment of Paper Effluent by Electro Catalytic Oxidation Method

通过邻苯二甲酸氢钾(KHP)溶液的电解实验研究了德国引进的金属铌掺硼金刚石膜电极(Nb/BDD)的电化学性质,并利用该电极处理装置处理了东莞某造纸厂造纸废水。考察了电解时间、电流强度及废水的pH值、电解质的浓度、电导率等参数对电化学降解效率的影响。结果表明,Nb/BDD具有优异的污水降解性能,在pH值为3.0,电流密度为37.23 mA/cm2,电压6.9 V,NaCl充当电解质质量浓度0.4 g/L的条件下,电解200 min,装置对再生纸造纸废水的COD的去除率接近70%,BOD/COD为0.4,比能耗为27.6(kW.h/kg)。

Based on the electrolysis experiment of phthalic acid potassium hydrogen(KHP),the electrochemical properties of electrolytic capacitors-new metal boron-doped diamond film electrode(Nb/BDD) introduced from the German are analyzed and the electrode treatment equipment is used to deal with the papermaking effluent from a paper mill in Dongguan.The effects of the electrolytic time,current strength and wastewater pH value,electrolyte concentration,electric conductivity parameters on the electrochemical degradation efficiency are investigated.The results show that the Nb/BDD has excellent sewage removal performance and when pH is 3.0,the current density of 37.23 mA/cm2,voltage 6.9 V,NaCl act as electrolyte concentration 0.4 g/L and 200 mins of electrolysis,COD removal rate is close to 70%,BOD/COD is 0.4 and energy consumption is 27.6(kW·h/kg).