臭氧预氧化与常规工艺联用处理西氿备用水源水的试验

Investigation of Combined between Pre-Oxidation and Conventional Processes for Treatment of Spare Source Water

该文采用臭氧预处理联合常规工艺处理宜兴市西仇备用水源水。着重考察了臭氧预处理对后续工艺出水中浊度、COD_(Mn)、UV_(254)的影响,并用三维荧光探究了预臭氧对水中溶解性有机物变化影响。结果表明,预臭氧具有助凝作用,可以较显著提升沉淀过程浊度去除率,可使砂滤出水COD_(Mn)稳定在标准要求的3.0 mg/L以下,单独预臭氧过程对UV_(254)去除效果随臭氧投加量增加而提升。常规处理无法有效地去除荧光物质,但0.97 mg/L预臭氧投加量可较有效提升荧光物质去除率,且当投加量升至1.53 mg/L后,去除率会降低。

Pre-ozonation was applied to treat the Xijiu River water in ~ixing City. The effects of pre-ozonation on turbidity, CODMn, and UV254 removal efficiency on the continuous process were studied. The results indicate that ozone has coagulation effect, which can enhance the turbidity removal rate in the sedimentation process and can stabilized CODMn below 3.0 mg/L in effluent of sand filter. Removal rate of UV254 is increased with the increase dosage of ozone. Fluorescent substances cannot be effectively removed by the conventional treatment process, however, 0.97 mg/L of ozone can obviously improve the removal efficiency of the fluorescent material, with the dosage of ozone increasing to 1.53 mg/L, the removal efficiency of fluorescent material seems to be decreasing.