摘要
为优化改造方案，对昆明某污水处理厂进水碳源的种类、赋存形态及生物降解性进行了分析。结果表明，该污水处理厂进水中有机物的可生化性良好，但碳源种类较差，易生物降解有机物仅占进水有机物的lO％-20％。通过分析进水碳源在生物处理过程不同途径中的利用比例，明确了该污水处理厂直接用于脱氮、除磷的碳源分别约占进水总碳源的15．9％和8．2％，约20％的碳源被用于微生物自身同化作用，47％的碳源被微生物氧化而无效浪费。从碳源分配角度出发，在原有氧化沟底部曝气单级A／O改造方案的基础上提出了两级A／O＋分段进水改造方案，以实现系统对NH3-N与NO3-N的同步去除。
The types, forms and biodegradability of carbon source in the influent of a wastewater treatment plant in Kunming City were analyzed to optimize a reconstruction scheme. The results showed that while the biodegradability of organics in the influent was good, the types of carbon source were poor, and easily biodegradable organics accounted for only 10% to 20% of the influent organics. Analyzing how carbon source was utilized in the biological treatment process indicated that the carbon source which was directly used for nitrogen and phosphorus removal accounted for about 15.9% and 8.2%, respectively. About 20% of carbon source was used for microbe assimilation, and 47% of carbon source was oxidized and effectively wasted. Considering the carbon source distribution, the two-stage A/O oxidation ditch and step feed scheme instead of the original single-stage A/Omicroporous aeration was put forward in order to remove NH3 -N and NO3- -N simultaneously.
出处
《中国给水排水》
CAS
CSCD
北大核心
2014年第7期5-8,共4页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2011ZX07302-001)
陕西省科技统筹创新工程(2011KTZB03-03-03)
教育部新世纪优秀人才计划项目(NCET-12-1043)
陕西省创新团队项目(IRT2013KCT-13)
关键词
污水处理厂
碳源种类
碳源分配
利用途径
升级改造
wastewater treatment plant
carbon source type
carbon source distribution
lization way
upgrading and reconstruction
