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| 强化混凝对二级处理出水中溶解性有机物特性的影响 | |
| 引用本文： | 薛爽,文杨,铁梅,赵庆良,魏亮亮,张朝红,金乌吉斯古楞,张丽娜.强化混凝对二级处理出水中溶解性有机物特性的影响[J].环境科学学报,2013,33(8):2199-2208. |
| 作者姓名： | 薛爽 文杨 铁梅 赵庆良 魏亮亮 张朝红 金乌吉斯古楞 张丽娜 |
| 作者单位： | 1. 辽宁大学环境学院,沈阳110036;辽宁省水环境生物监测与水生态安全重点实验室,沈阳110036 2. 辽宁大学环境学院,沈阳,110036 3. 哈尔滨工业大学市政环境工程学院,哈尔滨,150090 |
| 基金项目： | 国家自然科学基金，辽宁省教育厅科学技术研究项目，辽宁省科学技术计划项目，辽宁省自然科学基金，辽宁省水环境生物监测与水生态安全重点实验室项目，the National Natural Science Foundation of China，the Science and Technology Research Project of Liaoning Provincial Education Department，the Science and Technology Plan Project of Liaoning Province，the Natural Science Foundation of Liaoning Province of China，the Project of the Key Laboratory of Water Environment Biomonitoring and Ecological Security of Liaoning Province |
| 摘 要： | 以沈阳市B污水处理厂二级处理出水为研究对象,采用FeCl3.6H2O作为混凝剂,研究了强化混凝对二级处理出水中溶解性有机物(DOM)的卤代活性和荧光特性的影响.按照DOM在XAD树脂上的吸附特性将其分为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,强化混凝(混凝剂投加量为80mg.L-1,pH=5.00)对DOC的去除率为55.3%.强化混凝对HPO-A的去除率最高,而对HPI的去除率最低.强化混凝后,HPO-N的三卤甲烷生成活性(STHMFP)上升,而其他4种DOM组分的STHMFP下降.强化混凝能够有效去除类富里酸荧光物质和具有高环数和高聚合度的稠环类芳香性荧光物质.强化混凝对DOM组分的去除率和DOM组分的荧光强度下降率的相关性不显著. |
| 关 键 词： | 混凝 溶解性有机物 二级处理出水 分级 荧光光谱 |
| 收稿时间： | 2012/11/23 0:00:00 |
| 修稿时间： | 2012/12/17 0:00:00 |
Effect of enhanced coagulation on the characteristics of dissolved organic matter in secondary treated effluents |
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| XUE Shuang,WEN Yang,TIE Mei,ZHAO Qingliang,WEI Liangliang,ZHANG Zhaohong,JIN Wujisiguleng and ZHANG Lina.Effect of enhanced coagulation on the characteristics of dissolved organic matter in secondary treated effluents[J].Acta Scientiae Circumstantiae,2013,33(8):2199-2208. | |
| Authors: | XUE Shuang WEN Yang TIE Mei ZHAO Qingliang WEI Liangliang ZHANG Zhaohong JIN Wujisiguleng and ZHANG Lina |
| Institution: | 1. School of Environmental Science, Liaoning University, Shenyang 110036;2. Key Laboratory of Water Environment Biomonitoring and Ecological Security of Liaoning Province, Shenyang 110036;School of Environmental Science, Liaoning University, Shenyang 110036;1. School of Environmental Science, Liaoning University, Shenyang 110036;2. Key Laboratory of Water Environment Biomonitoring and Ecological Security of Liaoning Province, Shenyang 110036;School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090;School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090;1. School of Environmental Science, Liaoning University, Shenyang 110036;2. Key Laboratory of Water Environment Biomonitoring and Ecological Security of Liaoning Province, Shenyang 110036;School of Environmental Science, Liaoning University, Shenyang 110036;School of Environmental Science, Liaoning University, Shenyang 110036 |
| Abstract: | The effect of enhanced coagulation on the chlorination activity and fluorescence characteristics of dissolved organic matter (DOM) in the secondary treated effluent from the B wastewater treatment plant (Shenyang) was investigated. FeCl3·6H2O was used as a coagulant in this study. 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 a DOC removal of 55.3% was obtained under the enhanced coagulations (coagulant dosage 80 mg·L-1, pH=5.00). The removal of HPO-A by enhanced coagulation was the highest while that of HPI was the lowest. HPO-N increased in specific trihalomethane formation potential (STHMFP), where the other four DOM fractions decreased in STHMFP, as a result of enhanced coagulation. Enhanced coagulation could effectively remove fulvic acid-like fluorescent materials and the polycyclic aromatic fluorescent materials with more aromatic rings and a higher degree of conjugation. The correlation between DOC removal and fluorescence intensity reduction of DOM fractions resulted from enhanced coagulation was not significant. |
| Keywords: | coagulation dissolved organic matter secondary treated effluent fractionation fluorescence spectroscopy |
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