摘要
选取浙江北部10个污水处理厂,调研污水厂生物除磷的运行效能并开展污泥活性以及微生物分布特征及其除磷机理的研究.通过活性污泥批试验表明,厌氧释磷率和好氧聚磷率(以P计)平均为2.4mg/(g·h)和2.2mg/(g·h);反硝化聚磷菌(DPAOs)占聚磷菌(PAOs)的比例为0.0%～80.1%.荧光原位杂交法(FISH)对活性污泥微生物群落结构分析表明,聚磷菌(PAOs)比例为2.0%～8.7%,聚糖菌(GAOs)比例为1.3%～22.4%.根据调查结果和生物除磷性能研究,可通过调整污水营养成分和设置独立前置反硝化池等方法改善除磷效果.
The performance of enhanced biological phosphorus removal （EBPR） and the activity of functional microorganisms community in ten municipal wastewater treatment plants in north region of Zhejiang Province were investigated. The rates of average P release and uptake were found about 2.4mg/（g·h）, and 2.2mg/（g·h）, respectively. Denitrifying polyphosphate accumulating organisms （DNPAOs） were estimated to be 0.0%-80.1% of the polyphosphate accumulating organisms （PAOs）. And the fractions of Accumulibacter as the family of PAOs, and Competibacter as potential glycogen accumulating organisms （GAOs） were quantified using fluorescence in situ hybridization （FISH）. The proportions of PAOs and GAOs were varied from 2.0% to 8.7%, and 1.3% to 22.4%, respectively. So it’s a great challenge for these wastewater treatment plants to meet the higher requirements for discharge. It should be better to reduce the industrial wastewater proportions and set a separate pre-denitrifying tank to favor EBPR system.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2010年第12期1614-1621,共8页
China Environmental Science
基金
国家自然科学基金资助项目(40701162)
浙江省科技厅项目(2009C33060)
中央高校基本科研业务费专项资金(2009QNA-6013)
关键词
强化生物除磷
荧光原位杂交
聚磷菌
聚糖菌
反硝化聚磷菌
enhanced biological phosphorus removal （EBPR）
fluorescence in situ hybridization （FISH）
polyphosphate accumulating organisms （PAOs）
glycogen accumulating organisms （GAOs）
denitrifying polyphosphate accumulating organisms （DNPAOs）
