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为了分析预臭氧-常规处理工艺对UV_(254)、2-MIB的去除效果及两者相关性,采用国家标准监测法,于7—9月对太湖水源水及中试系统中预臭氧-常规处理工艺各阶段出水进行取样监测分析。结果表明:与一般常规处理工艺相比较,预臭氧-常规处理工艺对2-MIB的去除率提高75%左右,预臭氧2-MIB的去除率占整个工艺总去除率的90%左右,臭氧氧化作用能够有效地去除2-MIB;太湖水源水pH为7.9~8.10,温度为24~27℃,臭氧氧化后UV_(254)降低20%~30%。且工艺对二甲基异莰醇的去除效果与水体中UV_(254)的浓度呈负相关性。当水体中UV_(254)浓度由0.9 mg/L上升到1.3 mg/L时,预臭氧-常规处理工艺对2-MIB的去除率下降10%左右。
In order to analyze the removal effect of UV_ (254) and 2-MIB and the correlation between UV_ (254) and 2-MIB, the national standard monitoring method was used to analyze the effect of pre-ozone-routine Treatment process of water samples for monitoring and analysis. The results showed that the removal rate of 2-MIB by pre-ozone-conventional treatment was increased by about 75% compared with the conventional treatment, the removal rate of pre-ozone 2-MIB accounted for about 90% of the total removal of the whole process, ozone oxidation The effect of 2-MIB can be effectively removed. The pH value of Taihu Lake source water is 7.9-8.10, the temperature is 24-27 ℃, UV_ (254) is reduced by 20% -30% after ozone oxidation. The removal efficiency of dimethyl iso-iso-alcohol was negatively correlated with the concentration of UV 254 in water. When the concentration of UV 254 in water increased from 0.9 mg / L to 1.3 mg / L, the removal rate of 2-MIB by pre-ozone-conventional treatment decreased by about 10%.