掺硼金刚石膜电极处理医院废水的研究

Study on Hospital Wastewater using Boron-doped Diamond Electrode

通过研究自制电解槽,利用掺硼金刚石膜电极(BDD)对医疗废水进行消毒实验研究。实验研究了电流密度、消毒时间及Cl-浓度对消毒效果的影响。实验结果表明:电流密度越大,消毒效果越好;消毒接触时间越长,消毒效果越好;Cl-浓度对消毒效果影响显著,医疗废水Cl-质量浓度达到200 mg/L以上,消毒接触时间≥9 s,出水即可满足GB 18466—2005《医疗机构水污染物排放标准》粪大肠菌群数均不得超过500 MPN/L。

Study on the disinfection effect of hospital wastewater using the boron-doped diamond film electrode （BDD） in the self-electrolyzer was carried out. The disinfection effect of current density, disinfection time and the concentration of C1- were studied in this experiment. The results showed that the greater the electric current density is, the better disinfection effect will be. The longer the contact time is,the better disinfection effect will be. The concentration of C1- is significant on the disinfection effect. When the concentration of C1- in hospital wastewater is more than 200 mg/L as well as the disinfection contact time is more than 9 s,the effluent could meet the requirement of the Medical Institutions Sewage Discharge Standard （GB 18466--2005） in which the value of fecal coliform should be no more than 500 MPN/L.