摘要
某市政污水处理厂的生物处理系统采用改良A/A/O工艺,针对运行中出现的定期(国家法定节假日)进水碳源不足的问题,提出了可行的强化脱氮措施。在小长假期间,进水有机碳源略有降低,通过提前将运行模式调整为脱氮A/O模式,可保证生物处理系统的脱氮效果;在长假期间,尤其是国庆节和春节期间,进水有机碳源会大幅降低,且持续时间相对较长,为确保出水总氮浓度达标,除提前调整运行模式外,必须辅助投加葡萄糖作为碳源。实践效果表明,以上强化脱氮措施可有效保证出水总氮浓度的稳定达标。
Feasible measures of enhancing nitrogen removal were proposed in order to solve the shortage of influent carbon source during national holidays in a municipal sewage treatment plant using the modified A/A/O process. The influent concentration of organic carbon source was slightly low in the short holiday period. Therefore, the operating mode should be adjusted to denitrification A/O mode in advance to ensure biological nitrogen removal efficiency. During the long holiday periods, especially National Day and the Spring Festival, the irdluent concentration of organic carbon source was significantly low for a long time. Glucose as an assisted carbon source must then be dosed, in addition to operation adjustments in advance, to ensure that the effluent total nitrogen meets standards. Results from the operation showed that using the enhanced nitrogen removal measures could effectively ensure that effluent total nitrogen met the standard.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第17期67-69,共3页
China Water & Wastewater
关键词
污水处理厂
总氮
脱氮
有机碳源
sewage treatment plant
total nitrogen
nitrogen removal
organic carbon source
