Question

论文摘要英语翻译，谢谢了！

随着水体富营养化的加重，污水的生物脱氮除磷技术越来越受到广泛的关注，成为减少环境污染，促进生态平衡的重要途径。脱氮除磷工艺传统的反硝化硝化法是国内外采用最多的工艺，而碳源在反硝化过程中的作用是至关重要的。
甲醇是公认的最廉价的外加碳源，但由于存在安全隐患，乙酸钠正越来越成为研究的热点。本文研究了以乙酸钠为外加碳源时，在何时投加乙酸钠时系统硝化和反硝化的效率最高，即碳源投加点的优化。
针对李村河污水处理厂脱氮效率低的状况，试验模拟了李村河污水处理厂的系统。本试验在温度为12-17℃，回流比为300％条件下进行，由于硝化效果非常好，所以后期主要研究外加乙酸钠对反硝化的影响。又由于反硝化历时100min之后效果不好，后期主要研究反硝化历时100分钟的处理效果。通过对比研究，得出在缺氧反应20min时投加乙酸钠对脱氮效果最好。

关键词：生物脱氮;反硝化; 碳源投加点

Answer 1

随着水体富营养化的加重，污水的生物脱氮除磷技术越来越受到广泛的关注，成为减少环境污染，促进生态平衡的重要途径。
With the increase of the water-body eutrophication, wastewater biological nitrogen phosphorus removal technology is more and more widely concern, become reduce the pollution of the environment, promote the ecological balance of important ways.

脱氮除磷工艺传统的反硝化硝化法是国内外采用最多的工艺，而碳源在反硝化过程中的作用是至关重要的。
Take off nitrogen phosphorus removal process is the traditional denitrifying nitration method is the most of the technology at home and abroad, and carbon source in denitrification process function is very important.

甲醇是公认的最廉价的外加碳源，但由于存在安全隐患，乙酸钠正越来越成为研究的热点。
Methanol is recognized as the most cheap and carbon sources, but since there are potential safety problems, acetic acid sodium is more and more become the research focus.

本文研究了以乙酸钠为外加碳源时，在何时投加乙酸钠时系统硝化和反硝化的效率最高，即碳源投加点的优化。
This paper studies the acetic acid and sodium in for carbon sources, when dosing system when acetic acid sodium nitrification and denitrification efficiency of the highest, namely carbon source for some optimization.

针对李村河污水处理厂脱氮效率低的状况，试验模拟了李村河污水处理厂的系统。
Licunhe sewage treatment plant to take off for nitrogen efficiency low status, experimental simulation licunhe sewage treatment plant of the system.

本试验在温度为12-17℃，回流比为300％条件下进行，由于硝化效果非常好，所以后期主要研究外加乙酸钠对反硝化的影响。
This test in the temperature of 12-17 ℃, reflux ratio is 300% conditions, due to nitration effect is very good, so later research and acetic acid sodium to the influence of the activity.

又由于反硝化历时100min之后效果不好，后期主要研究反硝化历时100分钟的处理效果。
And with the denitrifying lasted 100 min after the result is bad, later research denitrifying lasted 100 minutes of the treatment effect.

通过对比研究，得出在缺氧反应20min时投加乙酸钠对脱氮效果最好。
Through the comparative study, in 20 min reaction that oxygen when acetic acid sodium dosing of denitrification best effect.

With the increase of the water-body eutrophication, wastewater biological nitrogen phosphorus removal technology is more and more widely concern, become reduce the pollution of the environment, promote the ecological balance of important ways.
Take off nitrogen phosphorus removal process is the traditional denitrifying nitration method is the most of the technology at home and abroad, and carbon source in denitrification process function is very important.
Methanol is recognized as the most cheap and carbon sources, but since there are potential safety problems, acetic acid sodium is more and more become the research focus.
This paper studies the acetic acid and sodium in for carbon sources, when dosing system when acetic acid sodium nitrification and denitrification efficiency of the highest, namely carbon source for some optimization.
Licunhe sewage treatment plant to take off for nitrogen efficiency low status, experimental simulation licunhe sewage treatment plant of the system.
This test in the temperature of 12-17 ℃, reflux ratio is 300% conditions, due to nitration effect is very good, so later research and acetic acid sodium to the influence of the activity.
And with the denitrifying lasted 100 min after the result is bad, later research denitrifying lasted 100 minutes of the treatment effect.
Through the comparative study, in 20 min reaction that oxygen when acetic acid sodium dosing of denitrification best effect.

Answer 2

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