Changes in different organic matter fractions during conventional treatment and advanced treatment  

作　　者：Chao Chen Xiaojian Zhang Lingxia Zhu Wenjie He Hongda Han 

机构地区：[1]School of Environment, Tsinghua University, Beijing 100084, China. [2]Tianjin Waterworks Co., Ltd., Tianjin 300040, China

出　　处：《Journal of Environmental Sciences》2011年第4期582-586,共5页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50708050);the National Water Special Program of China(No.2008ZX07420-005)

摘　　要：XAD-8 resin isolation of organic matter in water was used to divide organic matter into the hydrophobic and hydrophilic fractions. A pilot plant was used to investigate the change in both fractions during conventional and advanced treatment processes. The treatment of hydrophobic organics （HPO）, rather than hydrophilic organicas （HPI）, should carry greater emphasis due to HPO’s higher trihalomethane formation potential （THMFP） and haloacetic acid formation potential （HAAFP）. The removal of hydrophobic matter and its transmission into hydrophilic matter reduced ultimate DBP yield during the disinfection process. The results showed that sand filtration, ozonation, and biological activated carbon （BAC） filtration had distinct influences on the removal of both organic fractions. Additionally, the combination of processes changed the organic fraction proportions present during treatment. The use of ozonation and BAC maximized organic matter removal efficiency, especially for the hydrophobic fraction. In sum, the combination of pre-ozonation, conventional treatment, and O 3 -BAC removed 48% of dissolved organic carbon （DOC）, 60% of HPO, 30% of HPI, 63% of THMFP, and 85% of HAAFP. The use of conventional treatment and O 3 -BAC without pre-ozonation had a comparable performance, removing 51% of DOC, 56% of HPO, 45% of HPI, 61% of THMFP, and 72% of HAAFP. The effectiveness of this analysis method indicated that resin isolation and fractionation should be standardized as an applicable test to help assess water treatment process efficiency.XAD-8 resin isolation of organic matter in water was used to divide organic matter into the hydrophobic and hydrophilic fractions. A pilot plant was used to investigate the change in both fractions during conventional and advanced treatment processes. The treatment of hydrophobic organics （HPO）, rather than hydrophilic organicas （HPI）, should carry greater emphasis due to HPO’s higher trihalomethane formation potential （THMFP） and haloacetic acid formation potential （HAAFP）. The removal of hydrophobic matter and its transmission into hydrophilic matter reduced ultimate DBP yield during the disinfection process. The results showed that sand filtration, ozonation, and biological activated carbon （BAC） filtration had distinct influences on the removal of both organic fractions. Additionally, the combination of processes changed the organic fraction proportions present during treatment. The use of ozonation and BAC maximized organic matter removal efficiency, especially for the hydrophobic fraction. In sum, the combination of pre-ozonation, conventional treatment, and O 3 -BAC removed 48% of dissolved organic carbon （DOC）, 60% of HPO, 30% of HPI, 63% of THMFP, and 85% of HAAFP. The use of conventional treatment and O 3 -BAC without pre-ozonation had a comparable performance, removing 51% of DOC, 56% of HPO, 45% of HPI, 61% of THMFP, and 72% of HAAFP. The effectiveness of this analysis method indicated that resin isolation and fractionation should be standardized as an applicable test to help assess water treatment process efficiency.

关 键 词：organic matter HYDROPHOBIC HYDROPHILIC polarity drinking water treatment 

分 类 号：X5[环境科学与工程—环境工程] P618.510.2[天文地球—矿床学]