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研究报告

Effect of substrate ratio on the performance of nitrogen removal through anaerobic ammonia oxidation

基金项目：国家自然科学基金（No.51668033）；甘肃省高等学校特色专业项目（No.101004）；兰州交通大学教改重点项目：大学生创新实验项目（No.2017063）

摘要：采用厌氧氨氧化反应器（ASBR）处理模拟生活污水，在温度为30℃时，控制进水NO₂^--N浓度为（30.0±0.2）mg·L^-1，pH为（7.2±0.2），考察了NO₂^--N/NH₄⁺-N分别为0.9、1.1、1.3、1.4、1.5和1.6时，对厌氧氨氧化（ANAMMOX）脱氮效果的影响.结果表明，当NO₂^--N/NH₄⁺-N为1.4时，出水NH₄⁺-N、NO₂^--N及TN的浓度分别为0.8、1.5和7.7 mg·L^-1，NH₄⁺-N、NO₂^--N及TN的去除率分别高达96.2%、95.4%和85.3%，此时脱氮性能最好，与发生厌氧氨氧化时NO₂^--N/NH₄⁺-N理论值1.32比较接近.

Abstract：Anaerobic ammonia oxidation sequencing batch reactor(ASBR)was used to treat simulated domestic waste water under the temperature of 30℃,the influent concentration of NO₂^--N of (30.0±0.2) mg·L^-1, pH of (7.2±0.2) with the NO₂^--N/NH₄⁺-N were 0.9, 1.1, 1.3, 1.4, 1.5 and 1.6, respectively. Experimental results indicate that when the influent substrate ratio (NO₂^--N/NH₄⁺-N) was 1.4, the effluent concentrations of NH₄⁺-N, NO₂^--N,TN were 0.8, 1.5 and 7.7 mg·L^-1, respectively, the removal rates of them achieved to 96.2%, 95.4% and 85.3%, respectively, and the highest removal rates of nitrogen were realized, which was closed to the theoretical value of 1.32 of the NO₂^--N/NH₄⁺-N of ANAMMOX.