金乌吉斯古楞,薛爽,王智,王俭,张朝红,王杰,文杨.城市污水处理过程中溶解性有机物及荧光物质的变化规律[J].环境科学学报,2014,34(9):2298-2305
城市污水处理过程中溶解性有机物及荧光物质的变化规律
- Changes of dissolved organic matter and fluorescencent materials in municipal sewage treatment processes
- 基金项目：国家自然科学基金（No. 21107039）；辽宁省教育厅项目（No. L2011002，No. L2012006）；辽宁省科学技术计划项目（No. 2011230009）；辽宁省自然科学基金（No. 201202091）
- 金乌吉斯古楞
- 1. 辽宁大学 环境学院, 沈阳 110036
- 薛爽
- 1. 辽宁大学 环境学院, 沈阳 110036
- 王智
- 1. 辽宁大学 环境学院, 沈阳 110036;2. 沈阳市环境技术评估中心, 沈阳 110014
- 王俭
- 1. 辽宁大学 环境学院, 沈阳 110036
- 张朝红
- 1. 辽宁大学 环境学院, 沈阳 110036
- 王杰
- 1. 辽宁大学 环境学院, 沈阳 110036
- 文杨
- 1. 辽宁大学 环境学院, 沈阳 110036
- 摘要：以锦州市W污水处理厂为研究对象，利用三维荧光光谱分析技术和荧光区域积分（FRI）方法考察了城市污水处理过程中溶解性有机物及荧光物质的去除状况.利用XAD树脂将DOM分为5个部分：疏水性有机酸（HPO-A）、疏水性中性有机物（HPO-N）、过渡亲水性有机酸（TPI-A）、过渡亲水性中性有机物（TPI-N）和亲水性有机物（HPI）.结果表明，HPO-A和HPI是该污水处理厂进水中的主要DOM组分，并且DOM中的荧光物质主要为类芳香族蛋白质荧光物质和类富里酸荧光物质.在该污水处理厂内，生物降解作用是TPI-A和HPI的主要去除机制，HPO-N和TPI-N主要是由深度处理工艺（絮凝-沉淀-过滤）去除的，生物处理工艺和深度处理工艺对HPO-A的去除能力接近，而生物处理工艺和深度处理工艺对TPI-N的去除效果均较差.生物处理工艺对HPO-A、TPI-A和HPI中的荧光物质有较强的去除能力，而对HPO-N和TPI-N中荧光物质的去除效果较差.深度处理工艺能够有效去除HPO-A和HPO-N中的荧光物质，而对TPI-A、TPI-N和HPI中的荧光物质无明显去除作用.
- Abstract：The removals of dissolved organic matter and fluorescencent materials in wastewater treatment processes of the W wastewater treatment plant (WWTP) in Jinzhou were investigated, by means of three-dimensional excitation-emission matrix fluorescence spectroscopy and fluorescence regional integration (FRI). DOM was fractionated using XAD resins into five fractions: hydrophobic acid (HPO-A), hydrophobic neutral (HPO-N), transphilic acid (TPI-A), transphilic neutral (TPI-N) and hydrophilic fraction (HPI). The results showed that HPO-A and HPI were major DOM fractions, and aromatic protein-and fulvic acid-like fluorophores dominated in fluorescent materials, in the influent of WWTP. Biodegradation was the dominating mechanism for the reductions of TPI-A and HPI, while advanced treatment processes (flocculation-sedimentation -filtration) were the primary removal mechanism for HPO-N and TPI-N, in WWTP.The reductions of HPO-A by biological and advanced treatment processes were close. On the other hand, the removals of TPI-N by biological and advanced treatment processes were insignificant. The removals of fluorescent materials in HPO-A、TPI-A and HPI by biological treatment processes were significant, whereas those in HPO-N and TPI-N were poor. The fluorescent materials in HPO-A and HPO-N were effectively removed by advanced treatment processes, while advanced treatment processes seemed to be ineffective in removing those in TPI-A, TPI-N and HPI.
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