【摘要】 碳源、碳氮比是污水生物处理过程中一氧化二氮释放的重要影响因素。试验采用甲醇、乙酸钠为碳源,硝酸盐为电子受体,研究不同碳源、碳氮比(C/N)条件下一氧化二氮释放情况。结果发现一氧化二氮释放主要在低碳氮比情况且释放总量受碳源影响。乙酸钠做碳源,碳氮比为4. 5能避免一氧化二氮产生。更多还原

【Abstract】 Carbon source and C/N ratios are important factors affecting the emission of nitrous oxide( N2O) in biological wastewater treatment processes. In this study,we use methanol and sodium acetate as carbon source and,nitrate as electron acceptor to study releases of nitrous oxide in different carbon sources and nitrogen ratio( C/N) condition. Our results showed that nitrous oxide is released mainly in the case of low-nitrogen ratio and the amount of N2 O release is affected by carbon source. The experimental conditions which is sodium acetate as carbon source and C/N ratios equal 4. 5 can avoid producing nitrous oxide.更多还原