环境因子对反硝化聚磷菌效能的影响

张晓昕, 李昂, 孙移鹿, 马放, 杨基先

(哈尔滨工业大学 城市水资源与水环境国家重点实验室, 150090 哈尔滨)



摘要:

为全面考察反硝化聚磷菌(DPB)在不同环境条件下的脱氮除磷效能,利用厌氧/好氧/缺氧(A/O/A-SBR)反应器,以人工配水培养驯化反硝化聚磷颗粒污泥．通过正交试验,综合考察不同碳源类型、碳源质量浓度、进水温度和pH条件下系统的脱氮除磷效能．结果表明:以丙酸钠为碳源,在进水COD质量浓度400 mg/L、水温25 ℃、pH为7的条件下,DPB对于有机物的去除效能最高;以丙酸钠为碳源、COD质量浓度400 mg/L、进水温度15 ℃、pH为7条件下,DPB的脱氮效能最高;以乙酸钠为碳源、COD质量浓度400 mg/L、进水温度25 ℃、pH为8时,DPB的除磷效能最高．温度对系统COD降解和脱氮效能影响最大,pH的影响最小；pH对系统的除磷效能影响最大,碳源类型的影响最小．

关键词:  反硝化聚磷菌  脱氮除磷  环境因子  正交试验

DOI：10.11918/j.issn.0367-6234.2013.08.006

分类号:

基金项目:国家自然科学基金资助项目（51178139；51108120）；第四批中国博士后特别资助项目（201104430）；第46批中国博士后科学基金资助项目（20090460901）.



Effect of environmental factors on the efficiency of denitrifying phosphorus removal bacteria

ZHANG Xiaoxin, LI Ang, SUN Yilu, MA Fang, YANG Jixian

(State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 150090 Harbin, China)

Abstract:

To investigate the effect of different environmental factors on the efficiency of denitrifying phosphorus removal bacteria (DPB), anaerobic/oxic/anoxic reactor (A/O/A-SBR) was used to culture the granular sludge. By designing the orthogonal test, the overall investigation of the biological nitrogen and phosphorus removal efficiency of DPB under various carbon source, carbon concentration, inlet water temperature and pH value was carried out. The results show that: when carbon source is sodium propionate, COD concentration is 400 mg/L, inlet water temperature is 25 ℃, and pH value is 7, the COD degradation efficiency of DPB is the highest; when carbon source is sodium propionate, COD concentration is 400 mg/L, inlet water temperature is 15 ℃, pH value is 7, the nitrogen removal efficiency of DPB is the highest; when carbon source is sodium acetate, COD concentration is 400 mg/L, inlet water temperature is 25 ℃, pH value is 8, the removal efficiency of soluble P is best. Temperature is the most influential factor for the COD and nitrogen removal, while the influence of pH is the minimum. The most influential factor for phosphorus removal of DPB is pH, and carbon source affects the minimum.

Key words:  denitrifying phosphorus removal bacteria  nitrogen and phosphorus removal  environmental factors  orthogonal test