缓释碳源生态基质添加比例对河水脱氮效果及微生物影响
发布时间：2018-10-19 12:48
【摘要】：添加缓释碳源生态基质提高河水C/N值可增强脱氮效果。考察了不同添加比例对河水脱氮效果和COD的影响,并采用高通量测序手段对基质中微生物进行分析,结果表明对总氮去除效果随着添加比例的增加而增加,考虑到前期释碳量高易引起二次污染,控制添加比例为15%,装置对氨氮、硝态氮、总氮的平均去除率分别为62.36%、75.22%、64.09%;出水ρ(COD)平均为28.18 mg/L。高通量分析结果显示假单胞菌(Pseudomonas)随着添加比例增加而增加,与脱氮效果一致,这可能与该菌属中包含硝化菌有关;缓释碳源添加比例为15%时,该组微生物多样性最大。可见,控制缓释碳源生态基质添加比例对脱氮效果具有一定的意义。
[Abstract]:Adding slow release carbon source ecological substrate to increase the C / N value of river water can enhance the denitrification effect. The effects of different addition ratios on the nitrogen removal efficiency and COD in river water were investigated. The results showed that the removal efficiency of total nitrogen increased with the increase of the proportion of total nitrogen, and the microbes in the substrate were analyzed by high-throughput sequencing. Considering the secondary pollution caused by high carbon release in the early stage, the average removal rate of ammonia nitrogen, nitrate nitrogen and total nitrogen is 62.3636% and 75.22%, respectively, and the average effluent 蟻 (COD) is 28.18 mg/L., and the ratio of controlling addition is 15%, and the average removal rate of ammonia nitrogen, nitrate nitrogen and total nitrogen is 62.36 and 75.22 respectively, and the average effluent 蟻 (COD) is 28.18 mg/L.. The results of high throughput analysis showed that the (Pseudomonas) of Pseudomonas increased with the increase of the addition proportion, which was consistent with the denitrification effect, which might be related to the nitrifying bacteria in this genus, and the microbial diversity of this group was the largest when the proportion of slow-release carbon source was 15. It can be seen that controlling the proportion of slow-release carbon source ecological matrix has certain significance for nitrogen removal effect.
【作者单位】： 郑州大学水利与环境学院;郑州大学环境技术咨询工程有限公司;郑州大学环境政策规划评价研究中心;
【基金】：国家水体污染控制与治理科技重大专项(2015ZX07204-002-004)
【分类号】：X172;X52
，
本文编号：2281162
[Abstract]:Adding slow release carbon source ecological substrate to increase the C / N value of river water can enhance the denitrification effect. The effects of different addition ratios on the nitrogen removal efficiency and COD in river water were investigated. The results showed that the removal efficiency of total nitrogen increased with the increase of the proportion of total nitrogen, and the microbes in the substrate were analyzed by high-throughput sequencing. Considering the secondary pollution caused by high carbon release in the early stage, the average removal rate of ammonia nitrogen, nitrate nitrogen and total nitrogen is 62.3636% and 75.22%, respectively, and the average effluent 蟻 (COD) is 28.18 mg/L., and the ratio of controlling addition is 15%, and the average removal rate of ammonia nitrogen, nitrate nitrogen and total nitrogen is 62.36 and 75.22 respectively, and the average effluent 蟻 (COD) is 28.18 mg/L.. The results of high throughput analysis showed that the (Pseudomonas) of Pseudomonas increased with the increase of the addition proportion, which was consistent with the denitrification effect, which might be related to the nitrifying bacteria in this genus, and the microbial diversity of this group was the largest when the proportion of slow-release carbon source was 15. It can be seen that controlling the proportion of slow-release carbon source ecological matrix has certain significance for nitrogen removal effect.
【作者单位】： 郑州大学水利与环境学院;郑州大学环境技术咨询工程有限公司;郑州大学环境政策规划评价研究中心;
【基金】：国家水体污染控制与治理科技重大专项(2015ZX07204-002-004)
【分类号】：X172;X52
，
本文编号：2281162
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