| 有机碳支持的水源水生物脱氮影响因素研究 |
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| 引用本文： | 谭明,曲文龙,高云鹤.有机碳支持的水源水生物脱氮影响因素研究[J].科教文汇,2013(4):65-69. |
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| 作者姓名： | 谭明 曲文龙 高云鹤 |
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| 作者单位： | 沈阳水务集团,辽宁·沈阳110003 |
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| 基金项目： | 国家水体污染控制与治理重大专项（2009ZX07424-002）. |
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| 摘 要： | 针对水源水中硝酸盐氮（NO3-N），采用批实验开展了生物脱氮研究，考察了碳源种类对生物脱氮的影响，并考察了豌豆秆作为固体碳源时颗粒铁、碳源用量、N03-N初始浓度和水温等因素对生物脱氮的影响。实验结果表明：甲醇、豌豆秆和木屑完全脱氮的时间分别为2天、7天和30天；三种碳源均会引起亚硝酸盐氮的短暂积累，但最大积累量出现的时间不同；在模拟水中富含溶解氧时，含有颗粒铁的反应瓶在2天内可以实现完全脱氮，而对照瓶仅去除45．7％的N03-N；第2天时，1g豌豆秆时N03-N去除率为47．8名，3g时去除率为71．9％，而5g时去除率为99．6％；低浓度和高浓度时的豌豆秆生物脱氮速率分别是11．28mg／L／d和10．91mg／L／d；15。C时的豌豆秆生物脱氮速率约为33。c时的1／3，27cc时的脱氮速率约为33oc时的3／4。碳源种类、颗粒铁、豌豆秆用量和水温显著影响豌豆秆生物脱氮效果；在既定浓度范围内（5．65mg／L-21．92mg／L），N03-N初始浓度对生物脱氮基本无影响。
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| 关 键 词： | 水源水硝酸盐氮（NO3-N） 有机碳 生物脱氮影响因素 |
Study on Effects of Impact Factors on Organic Carbon- Supported Biological Denitrification for Source Water |
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| Authors: | Tan Ming Qu Wenlong Gao Yunhe |
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| Institution: | Tan Ming,Qu Wenlong,Gao Yunhe |
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| Abstract: | According to nitrate-nitrogen （NO3-N） in source water, batch study was conducted to explore biological denitrification, investigate the effect of carbon source type on biological denitrifi-cation, and identify the effects of granulated iron, mass of carbon source, NO3-N initial concentration and water temperature on bi- ological denitrification when pea straw acted as a solid organic carbon source. Experimental results indicated that it took 2 days 7 days and 30 days for methanol, pea straw and wood chip to completely remove NO3-N respectively. They three caused tem- porary nitrite-nitrogen accumulation, but accumulation peaks occurred at different time points. In dissolved oxygen-rich simu- lated water, the reaction bottle with granulated iron could com- pletely degrade NO3-N in 2 days, whereas the control bottle without iron could remove 45.7% of initial NO3-N. NO3-N per- cent removals were 47.8%, 71.9%, and 99.6% at 1 g, 3 g and 5 g of pea straw, respectively. The pea straw-supported denitrifica- tion rates were respectively 11.28 mg/L/d and 10.91 mg/L/d for the low and high concentrations. The pea straw-supported deni- trification rate at 15 oC was approximately 1/3 of the rate oh- served at 33 oC; the denitrification rate at 27 oC was 3/4 of the rate at 33 oC. Carbon source type, granulated iron, mass of car- bon source and water temperature significantly influence the per- formance of the biological denitrification. At the same time, in the given concentration range of 5.65 mg/L-21.92 mg/L, NO3-N ini- tial concentration has a minor effect on the biological denitrifica- |
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| Keywords: | source water nitriate-nitrogen （NO3-N） organic car-bon biological denitrification impact factors |
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