焦化废水处理中碳平衡研究
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摘要
针对焦化废水处理过程中产生的挥发性有机物不仅污染环境还会造成碳源损失的现状,选取焦化废水中具有代表性的苯酚为污染物,以A2/O工艺为载体,通过对A2/O工艺厌氧、缺氧、好氧3个阶段的碳指标测定,分析反应过程的碳平衡,得到碳源的去向:64.9%转移至固相,8.9%残留在液相,19.8%转移至气相,且转移至气相的总碳中包含4.1%的有机碳,充分说明焦化废水处理过程会逸散大量的挥发性有机物至大气。
In view of the fact that the volatile organic compounds generated in the process of coking wastewater treat-ment not only pollute the environment but also cause the loss of carbon, the representative phenol in coking wastewater has been chosen as pollutants. Using the A2/O process as a carrier, through the determination of carbon index in the three anaerobic,anoxic and aerobic stages of A2/O process, the carbon balance in the reaction has been analyzed, and the whereabouts of carbon sources could be obtained,64.9% has been transferred to solid phase,8.9% remained in liquid phase,and 19.8% transferred to gas phase. In addition, the total carbon transferred to gas phase contains 4.1%of organic carbon, which fully indicates that a large number of volatile organic compounds can be dissipated into the atmosphere in the process of coking wastewater treatment.
In view of the fact that the volatile organic compounds generated in the process of coking wastewater treat-ment not only pollute the environment but also cause the loss of carbon, the representative phenol in coking wastewater has been chosen as pollutants. Using the A2/O process as a carrier, through the determination of carbon index in the three anaerobic,anoxic and aerobic stages of A2/O process, the carbon balance in the reaction has been analyzed, and the whereabouts of carbon sources could be obtained,64.9% has been transferred to solid phase,8.9% remained in liquid phase,and 19.8% transferred to gas phase. In addition, the total carbon transferred to gas phase contains 4.1%of organic carbon, which fully indicates that a large number of volatile organic compounds can be dissipated into the atmosphere in the process of coking wastewater treatment.
引文
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[6]郝晓旭,高健磊,李升,等.倒置A2/O系统中碳、氮、磷的物料平衡分析[J].河南科学,2011,29(4):480-483.
[7]李亚新,周鑫,赵义. A2/O工艺各段对焦化废水中难降解有机物的去除作用[J].中国给水排水,2007,23(14):4-7.
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[9]田鑫.邻苯二甲酸二丁酯、苯酚及苯并(a)芘暴露对斑马鱼抗氧化系统的影响研究[D].沈阳:沈阳农业大学,2017.
[10]张鸿毅,崔洁,保庭毅,等.邻苯二甲酸二丁酯及其代谢产物的生殖毒性研究进展[J].现代泌尿外科杂志,2012,17(6):628-630.
[2]宋国新.焦化废水及其处理过程中有机污染物成分辨别原理与技术研究[D].上海:复旦大学,2012.
[3]杨凌波,曾思育,鞠宇平,等.我国城市污水处理厂能耗规律的统计分析与定量识别[J].给水排水,2008,34(10):42-45.
[4]张能一,唐秀华,邹平,等.我国焦化废水的水质特点及其处理方法[J].净水技术,2005,24(2):42-47.
[5]刘航航,高健磊,张肖静. A2/O2工艺中的碳氮平衡分析[J].工业技术,2011(2):60-62.
[6]郝晓旭,高健磊,李升,等.倒置A2/O系统中碳、氮、磷的物料平衡分析[J].河南科学,2011,29(4):480-483.
[7]李亚新,周鑫,赵义. A2/O工艺各段对焦化废水中难降解有机物的去除作用[J].中国给水排水,2007,23(14):4-7.
[8]尹艳君,余兆祥.焦化废水生物脱氮的研究进展[J].煤气与热力,2001,21(6):521-525.
[9]田鑫.邻苯二甲酸二丁酯、苯酚及苯并(a)芘暴露对斑马鱼抗氧化系统的影响研究[D].沈阳:沈阳农业大学,2017.
[10]张鸿毅,崔洁,保庭毅,等.邻苯二甲酸二丁酯及其代谢产物的生殖毒性研究进展[J].现代泌尿外科杂志,2012,17(6):628-630.