【摘要】 通过臭氧生物活性炭和微曝气生物活性炭(O3/BAC和micro-aeration/BAC)2套工艺研究其对不同相对分子质量有机物去除特点和不同相对分子量有机物生成的卤乙酸及其去除特性.结果表明,O3/BAC工艺对相对分子质量区间>30×103的有机物去除率超过90%.O3/BAC与micro-aeration/BAC出水中,UV254值表示相对分子质量<103的有机物超过50%,相对分子量区间在10×103~30×103的有机物占20%~30%;在O3/BAC和微曝气/BAC工艺出水中,以相对分子质量<103的有机物生成的卤乙酸最多,生成DCAA、TCAA、DBAA分别为97.00、38.55、2.10μg/L和104.00、42.75和2.92μg/L;采用各处理单元不同分子量有机物与氯反应生成的DCAA、TCAA、DBAA和THAAs与相对应的UV254值进行线性拟合,相关系数分别为0.827、0.851 3、0.815 7和0.878.UV254与臭氧生物活性炭处理工艺出水中的卤乙酸生成潜能具有较好的线性关系.更多还原

【Abstract】 We investigated the removal of organic matters with different molecular weight（MW） and HAAs formation potential composed of organic matters with different MW in the two processes of O₃/BAC and micro-aeration/BAC,and discussed the characteristic of forming HAAs by organic matters with different MW.The results indicated that more than 90% of organic matters with >30×10³ molecular weight could be removed in the process of O₃/BAC.In the water treated by the two processes of O₃/BAC and micro-aeration/BAC,the percentage of organic matters with <10³ MW exceeded 50%,10×10³～30×10³MW was in 20%～30% based on UV₂₅₄ value as token of organic matters.And the HAAs generated by the organic matters with <10³ MW occupied the main fraction,and the concentration of DCAA,TCAA and DBAA in the tow processes was 97.00,38.55,2.10（μg/L） and 104.00,42.75,2.92（μg/L.） Finally,preferable linear relationship were found between UV₂₅₄ and HAAs formation potential in finished water of the process of O₃/BAC,because of the better linear fitting correction coefficient between UV₂₅₄ and DCAA,TCAA,DBAA and THAAs,that is 0.827,（0.851?3,）（0.815?7） and 0.878.更多还原