摘要
为了提高改良型Carrousel氧化沟工艺污水处理厂的脱氮除磷效果，结合某污水处理厂3年的运行实践，讨论了该工艺的处理效果，生物脱氮除磷原理及影响出水效果的因素。分析表明将DO控制在0．3—0．7mg／L范围内，能够使出水中的TN浓度低于20mg／L；在氧化沟中发生的同步硝化反硝化反应（SND）对总氮的去除的贡献占总系统脱氮的66％；该系统剩余污泥的含磷率为3．0％，生物细胞中平均含磷量可达细胞干重的4．2％；总磷去除率与污泥龄具有很好的线性关系，加大污泥排放量可以提高除磷效果。
In order to enhance the bio-nitrogen and phosphorus removal of the modified Carrousel oxidation ditch （OD） process, the treatment performance, the principle of bio-nitrogen and bio-phosphorus removal have been discussed, at the same time the influencing factors to the effluent quality have been analyzed from the operation practice for 3 years. Total nitrogen effluent was low than 20 mg/L if the dissolved oxygen could be controlled in the range of 0.3 - 0.7 mg/L in the oxidation ditch. Simultaneous nitrification and denitrification was found in the OD process. Generally the contribution to total nitrogen removal of SND was about 66%. The phosphorus content of the return activated sludge was 3.0% , and the average phosphorus content in the bio-cell was 4.2%. TP removal rate had a linear relation with SRT, the TP removal performance would be enhanced if the SRT can be decreased to some extent.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2006年第12期42-45,共4页
Techniques and Equipment for Environmental Pollution Control
基金
国家自然科学基金资助项目(20377003)
北京市属市管高等学校人才强教"创新团队"资助项目
北京工业大学第三届研究生科技基金
关键词
CARROUSEL
氧化沟
生物脱氮
生物除磷
Carrousel
oxidation ditch
biological nitrogen removal
biological phosphorus removal
