DO对低C/N比污水生物亚硝化的影响分析

魏琛 罗固源

doi:10.11835/j.issn.1674-4764.2007.01.020

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DO对低C/N比污水生物亚硝化的影响分析

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- DO对低C/N比污水生物亚硝化的影响分析
- Influence of DO on Nitrification of Municipal Wastewater with Low C/N Ratio
- 土木与环境工程学报（中英文） 2007年29卷第1期页码：81-84
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- 基金信息：
  
  国家自然科学基金资助项目（50378095）
- DOI：10.11835/j.issn.1674-4764.2007.01.020
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- 纸质出版：2007
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魏琛罗固源. DO对低C/N比污水生物亚硝化的影响分析[J]. 土木与环境工程学报（中英文）, 2007,29(1):81-84.

Influence of DO on Nitrification of Municipal Wastewater with Low C/N Ratio[J]. Journal of Civil and Environmental Engineering, 2007, 29(1): 81-84.
魏琛罗固源. DO对低C/N比污水生物亚硝化的影响分析[J]. 土木与环境工程学报（中英文）, 2007,29(1):81-84. DOI： 10.11835/j.issn.1674-4764.2007.01.020.

Influence of DO on Nitrification of Municipal Wastewater with Low C/N Ratio[J]. Journal of Civil and Environmental Engineering, 2007, 29(1): 81-84. DOI： 10.11835/j.issn.1674-4764.2007.01.020.

摘要

采用活性污泥法SBR工艺

考察DO对亚硝化的影响。首先进行195 d的连续培养试验

得出亚硝化系统DO保持在0.2 mg/L～0.6 mg/L的范围之内

可使得到有效降解且出水亚硝化率达50%～90%;然后研究系统周期内DO的变化规律

可以考虑以12 h为一个亚硝化反应周期

若延长反应时间至16 h

将使反应有向硝酸型硝化转移的趋势;最后通过烧杯试验

得出随着系统DO浓度的升高

氨氮降解率上升、亚硝化率下降

遵循DO与氨氮降解率和亚硝化率关系的数学模式。

Abstract

Through the test on activated sludge in SBR reactor

the influence of DO on nitrification is studied.First

through a 195d continuous test

to maintain the DO concentration of nitrifying system at a low level

if the DO is in range between 0.2 mg/l(start) ~0.6 mg/l(end) there will be high NH+4-N reduction and the nitrification ratio will reach 50~90%;Second

according to the regularity of DO in a cycle

12h as a react time is proper.If the react time of 16h is taken

it will be a traditional nitrification.At last

through bottle reactors

it can be concluded that when the DO concentration of system rise

NH+4-N the reduction ratio will rise too

but the nitrification ratio will drop

the NH+4-N reduces and the nitrification ratio can be calculated from a formula.

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