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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。
The article uses ozone pretreatment combined with conventional technology to deal with Yixing City, avenge water source. The effects of ozone pretreatment on the turbidity, COD Mn and UV 254 of effluent from the subsequent process were investigated emphatically. The effects of pre-ozone on the dissolved organic matter in water were investigated by three-dimensional fluorescence. The results showed that pre-ozone had the effect of coagulant coagulation, which could significantly improve the turbidity removal rate of sedimentation process, and could stabilize COD_ (Mn) of sand filtrate effluent below the standard 3.0 mg / L, The removal effect increases with the increase of ozone dosage. The conventional treatment can not effectively remove the fluorescent substance, but 0.97 mg / L pre-ozone dose can effectively enhance the removal rate of fluorescent substance, and the removal rate will decrease when the dosage increases to 1.53 mg / L.