PengRui,ZhouJianfeng,FanJinhua,et al.DOM Characteristics in Lower Dongjiang River and Performance of an Emergency Advanced Treatment Process[J].China Water & Wastewater,2026,42(13):49-54.
东江下游DOM特征及应急深度处理工艺运行效果
- Title:
- DOM Characteristics in Lower Dongjiang River and Performance of an Emergency Advanced Treatment Process
- Keywords:
- source water of the lower Dongjiang River; dissolved organic matter; advanced treatment process; powdered activated carbon; disinfection by-products; three-dimensional excitation-emission matrix (3D-EEM); parallel factor analysis (PARAFAC)
- 摘要:
- 以东江下游水体为研究对象，采用平行因子分析、三维荧光光谱参数分析方法确定其溶解性有机物（DOM）的组分和特性；通过粉末活性炭预处理-臭氧-生物活性炭工艺与常规处理工艺各工段出水指标（UV254、荧光物质、CODMn、COD、消毒副产物生成势）的对比，探究粉末活性炭预处理-臭氧-生物活性炭工艺的优势。结果表明，东江下游水体中的DOM主要由类腐殖质、类酪氨酸组成，兼具陆源和自生源双重特性。与常规处理工艺相比，粉末活性炭预处理-臭氧-生物活性炭工艺对UV254、荧光物质、CODMn、COD、消毒副产物生成势的去除率分别提高了27.1~29.7、68.9~81.1、25.0~25.1、25.4~37.2、28.3~29.8个百分点。
- Abstract:
- This study took the water body in the lower reaches of the Dongjiang River as the research object. Parallel factor analysis (PARAFAC) and three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy parameter analysis were employed to determine the components and characteristics of dissolved organic matter (DOM). By comparing the effluent indices (UV254, fluorescent substances, CODMn, COD, and disinfection by-products formation potential) at each treatment unit between the powdered activated carbon (PAC) pretreatment-ozone-biological activated carbon (BAC) process and a conventional treatment process, the advantages of the PAC pretreatment-ozone-BAC process were investigated. The results showed that DOM in the lower reaches of the Dongjiang River mainly consisted of humic-like substances and tyrosine-like substances, exhibiting characteristics of both terrestrial and autochthonous sources. Compared with the conventional treatment process, the PAC pretreatment-ozone-BAC process achieved increases in removal rates for UV254, fluorescent substances, CODMn, COD, and disinfection by-products formation potential by 27.1-29.7 percentage points, 68.9-81.1 percentage points, 25.0-25.1 percentage points, 25.4-37.2 percentage points, and 28.3-29.8 percentage points, respectively.
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