Characteristics of nitrous oxide emission in partial nitritation process treating high ammonia wastewater
发布时间：2024-08-09
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- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- 2013青岛国际脱盐大会
- 关键字：
- 中文关键字：SBR, NO, 部分亚硝化, 释放特性，英文关键字：SBR; Nitrous oxide; Partial nitritation; Emission
- 摘要：
- A lab-scale SBR fed with synthetic high ammonia wastewater was operated under oxygen limited condition for partial nitritation. After 58 days’ operation, the ratio of ammonia to nitrite in effluent maintained between 1.00-1.25 and the partial nitritation has been successfully started up by increasing the influent ammonia concentration. Conversion of nitrogen and N2O emission during a single cycle was investigated. During a single cycle DO concentration maintained under 0.4 mg L-1. NH4+-N concentration decreased from 410.46 mg L-1 to 257.26 mg L-1, NO2--N concentration increased from 162.90 mg L-1 to 295.80 mg L-, NO3--N concentration increased gradually from 27.01 mg L-1 to 50.16 mg L-1. The pH value increased from 7.94 to 8.01 and then returned to 7.96. Dissolved N2O generally maintain around 0.078 mg L-1. The emission of N2O increaseing from 0.13 mg L-1 to 1.13 mg L-1 and down to 0.34 mg L-1 then subsequently back up to 0.54 mg L-1. The average rate of N2O emission was 0.84 mg min-1 in the initial stage, 2.67 and 1.88 times more than the middle and the later stage respectively, the main reason is N2O accumulate in last settling phase.
- 备注：
- 吕永涛
- 合写作者：
- JuKai,WangLei,ZhangXueling,SunTing
- 第一作者：
- 吕永涛
- 论文类型：
- 期刊论文
- 卷号：
- 卷：
- 期号：
- 期：
- 页面范围：
- 页：
- 是否译文：
- 否
- 发表时间：
- 2013-06-01