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当前位置: 首页 > 文章 > 好氧反硝化菌强化生态浮床对水体氮与有机物净化机理 生态学杂志 2017,36 (2) 569-576
Position: Home > Articles > Mechanisms of nitrogen and organic matter removal from water bodies by aerobic denitrifiers enhanced ecological floating bed Chinese Journal of Ecology 2017,36 (2) 569-576

好氧反硝化菌强化生态浮床对水体氮与有机物净化机理

作  者：
汤茵琪;李阳;常素云;孙井梅
单  位：
中国天辰工程有限公司;天津大学环境科学与工程学院
关键词：
生态浮床;好氧反硝化菌;曝气;氮去除;有机物去除;Monod动力学模型
摘  要：
好氧反硝化菌强化生态浮床通过挂膜将异养硝化-好氧反硝化菌与填料结合,并添加曝气强化措施,提高浮床对富营养化水体中氮和有机物的去除效果。结果表明,在7天内,好氧反硝化菌强化生态浮床在COD_(Cr)/TN=1.7~2.9的进水下,对NH_4~+-N、NO_3~--N、TN和COD_(Cr)的去除率分别为54.5%、100%、59.8%和56.3%,对TN和COD_(Cr)的去除率比传统生态浮床分别提高了47.1%和36.3%;在COD_(Cr)/TN=3.3~5.0的进水下,对NH_4~+-N、NO_3~--N、TN和COD_(Cr)的去除率分别为55.4%、100%、48.9%和65.6%,对TN和COD_(Cr)的去除率比传统生态浮床分别提高了21.0%和20.0%。好氧反硝化菌强化生态浮床中,曝气和异养硝化-好氧反硝化菌的添加提高了浮床对有机物的降解,增强了其在高溶解氧水平下的反硝化作用,克服了曝气生态浮床对NO_3~--N降解效果差的缺点。利用Monod动力学方程对好氧反硝化菌强化生态浮床初期降解氮素和有机物过程进行描述,相关系数为0.9,说明Monod动力学方程适用于描述好氧反硝化菌强化生态浮床的反应动力学。
译  名：
Mechanisms of nitrogen and organic matter removal from water bodies by aerobic denitrifiers enhanced ecological floating bed
作  者：
TANG Yin-qi;LI Yang;CHANG Su-yun;SUN Jing-mei;School of Environmental Science and Engineering, Tianjin University;China Tianchen Engineering Corporation;
关键词：
ecological floating bed;;aerobic denitrifiers;;aeration;;nitrogen removal;;organic matter removal;;Monod kinetic model
摘  要：
The ecological floating bed was enhanced by aerobic denitrifiers and aeration,which improved the removal of nitrogen and organic matter from eutrophic water. The results showed that54.5% of NH_4~+-N,100% of NO_3~--N,59.8% of TN and 56.3% of COD_(Cr)were removed by the aerobic denitrifiers enhanced ecological floating bed in seven days at COD_(Cr)/TN = 1. 7-2. 9 inflow,and the removal efficiencies of TN and COD_(Cr)were 47.1% and 36.3% higher than in the traditional floating bed,respectively. Additionally,the aerobic denitrifiers enhanced ecological floating bed removed 55.4% of NH_4~+-N,100% of NO_3~--N,48.9% of TN and 65.6% of COD_(Cr)in seven days at COD_(Cr)/TN = 3. 3-5. 0 inflow,and the removal efficiencies of TN and COD_(Cr)were21.0% and 20.0% higher than in the traditional floating bed,respectively. In the aerobic denitrifiers enhanced ecological floating bed,aeration benefited the removal of organic matter and aerobic denitrifiers would enhance the denitrification under the high level of DO,avoiding the poor performance of the NO_3~--N removal by the aerated ecological floating bed. Monod kinetic model was used to predict the initial removal of TN and COD_(Cr)by the aerobic denitrifiers enhanced ecological floating bed,with correlation coefficients of about 0. 9,suggesting that this model had a good prediction on the initial removal of nitrogen and organic matter.

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