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

• Published in: Journal of environmental sciences (China) 2011-01, Vol.23 (4), p.582-586
• Main Authors: Chen, Chao, Zhang, Xiaojian, Zhu, Lingxia, He, Wenjie, Han, Hongda
• Format: Article
• Language: English
• Subjects: Acetic Acid - analysis; activated carbon; bacterial artificial chromosomes; Charcoal - chemistry; Chemical Fractionation; Disinfection; dissolved organic carbon; drinking water treatment; filtration; fractionation; haloacetic acids; hydrophilic; hydrophilicity; hydrophobic; hydrophobicity; Organic Chemicals - analysis; organic matter; ozonation; polarity; sand; THMFP; Trihalomethanes - analysis; Ultraviolet Rays; Water Purification - methods; water treatment; 亲水性物质; 有机物质; 物质组分; 生物活性炭; 疏水性有机物; 臭氧氧化
• ISSN: 1001-0742; 1878-7320
• DOI: 10.1016/S1001-0742(10)60423-8

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.