| ABS树脂废水有机物反硝化潜势及降解特性 |
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| 引用本文： | 王 然,王 彤,程家运,宋玉栋,吕倩倩,周岳溪,杨利伟. ABS树脂废水有机物反硝化潜势及降解特性[J]. 环境科学研究, 2014, 27(11): 1379-1386 |
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| 作者姓名： | 王 然 王 彤 程家运 宋玉栋 吕倩倩 周岳溪 杨利伟 |
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| 作者单位： | 1.长安大学环境科学与工程学院, 陕西 西安 710054 ;中国环境科学研究院水污染控制技术研究中心, 北京 100012 ;中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2012ZX07201-005) |
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| 摘 要： | 为优化ABS树脂废水的生物脱氮工艺,测定了废水的反硝化潜势,分析了废水反硝化阶段有机物的降解特性. 结果表明,ABS树脂废水的反硝化碳源充足,并且含有易降解有机物和慢速降解有机物等具有不同反硝化速率的有机物. 在废水ρ(SCOD)(SCOD为溶解性化学需氧量)为755.4~1 043.3 mg/L,ρ(TN)为86.1~111.1 mg/L的情况下,总反硝化潜势为95.4~144.6 mg/L (以NO3--N计),其中易降解有机物的反硝化速率为3.4~4.6 mg/(g·h) (以NO3--N计),反硝化潜势为33.2~49.7 mg/L；2类慢速降解有机物的反硝化速率分别为2.2~3.2和0.4~0.9 mg/(g·h),反硝化潜势之和为62.2~94.9 mg/L. 反硝化过程中,废水SCOD的去除率为48.9%~62.8%,ON(有机氮)去除率为81.5%~95.7%. 腈类物质得到明显降解,并生成大量NH4+-N,是反硝化碳源的重要组成部分. 三维荧光光谱表明,废水中的芳香族有机物苯环结构在反硝化条件下未得到有效降解,但在好氧条件下得到快速降解.
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| 关 键 词： | ABS树脂废水 反硝化潜势 反硝化过程 有机物 降解 |
| 收稿时间： | 2014-04-27 |
| 修稿时间： | 2014-07-31 |
Denitrification Potentials and Degradation Characteristics of Organics in ABS Resin Wastewater |
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| WANG Ran,WANG Tong,CHENG Jia-yun,SONG Yu-dong,LYU Qian-qian,ZHOU Yue-xi and YANG Li-wei. Denitrification Potentials and Degradation Characteristics of Organics in ABS Resin Wastewater[J]. Research of Environmental Sciences, 2014, 27(11): 1379-1386 |
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| Authors: | WANG Ran WANG Tong CHENG Jia-yun SONG Yu-dong LYU Qian-qian ZHOU Yue-xi YANG Li-wei |
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| Affiliation: | College of Environmental Science and Engineering, Chang''an University, Xi''an 710054, China ;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;College of Environmental Science and Engineering, Chang''an University, Xi''an 710054, China;Jilin Petrochemical Company, Ltd., PetroChina, Jilin 132022, China;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;College of Urban Construction, Hebei University of Engineering, Handan 056038, China;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China ;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;College of Environmental Science and Engineering, Chang''an University, Xi''an 710054, China |
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| Abstract: | In order to optimize the biological nitrogen removal process of ABS resin wastewater, the denitrification potentials of the wastewater were measured, and the degradation characteristics of organics in the wastewater during the denitrification process were investigated. The results indicated that ABS resin wastewater contained sufficient carbon source for its denitrification including both readily biodegradable and slowly biodegradable organics with different denitrification rates. For ABS resin wastewater with soluble chemical oxygen demand (SCOD) of 755.4-1043.3 mg/L and total nitrogen (TN) of86.1-111.1 mg/L, the total denitrification potentials were from 95.4-144.6 mg/L (NO3--N). The denitrification potentials of the readily biodegradable organics in the wastewater were from 33.2-49.7 mg/L with denitrification rates of 3.4-4.6 mg/(g·h) (NO3--N). The total denitrification potentials of the two categories of slowly biodegradable organics ranged from 62.2-94.9 mg/L with denitrification rates of 2.2-3.2 and 0.4-0.9 mg/(g·h), respectively. During the denitrification process, the removal efficiencies of SCOD and organic nitrogen (ON) were from 48.9%-62.8% and 81.5%-95.7%, respectively. Organics containing nitrogen including organic nitriles, were the important carbon sources for denitrification and were degraded significantly with production of ammonia nitrogen. According to three-dimensional excitation and emission matrix fluorescence spectra,the aromatic cycles were not destroyed significantly under denitrificantion conditions, while they were destroyed quickly under aerobic conditions. |
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| Keywords: | ABS resin wastewater denitrification potentials denitrification stage organics degradation |
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