• 关键词：好氧吸磷  反硝化除磷  碳源  COD  反应时间  吸磷速率  聚磷菌

• 基金项目：国家高技术研究发展计划(863)项目(No.2006AA06Z320);北京市属市管高等学校人才强教计划资助项目(No.BJE10016200611);北京市自然科学基金项目(No.8063028)

• 郝晓地
• 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044

• 戴吉
• 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044

• 兰荔
• 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044

• 张璐平
• 北京建筑工程学院可持续环境生物技术研发中心, 北京 100044

• 摘要：以实验室动态生物营养物去除(BNR)工艺(BCFS)运行实验为基础,采用静态实验,研究了厌氧初始COD、碳源种类和反应时间对好氧吸磷和反硝化除磷效果的影响,同时将二者进行对比.实验结果表明,好氧吸磷效果随厌氧初始COD升高而增加.厌氧初始COD相同时,以葡萄糖为碳源的实验吸磷速率最快,4h好氧反应后残余PO₄^3-浓度最低;但以乙酸和丙酸为碳源的实验表现出更强的超量吸磷能力.缺氧条件下,常规反硝化细菌(OHO)引起的常规反硝化限制了本来就速率较低的反硝化除磷过程.当厌氧初始COD为400mg·mL^-1时,以葡萄糖、乙酸和丙酸为碳源的实验中反硝化除磷占总除磷量的比例分别为46.12%、32.03%和21.96%.

• Abstract：Anaerobic P-release,aerobic P-uptake and anoxic P-uptake are important factors controlling the overall efficiency of bio-Premoval in Biological Nutrient Removal(BNR)processes.Based on a lab-scale BNR process(BCFS),batch experiments were conducted to study the effects of initial anaerobic COD concentrations,carbon sources and HRT on aerobic P-uptake and anoxic P-uptake.Further,the results of P-uptake under aerobic and anoxic conditions are compared.The results from batch experiments indicate that P-uptake increased with increasing influent COD.With glucose used as carbon source,residual PO₄^3- in bulk under aerobic P-uptake in 4h was the lowest among the three tested carbon sources.Using acetate and propionate as carbon sources,however,increased the capacity of the system for continuous uptake of phosphate.Under anoxic conditions,Ordinary Heterotrophic Organisms(OHO)probably limited denitrifying dephosphatation,resulting in a lower anoxic P-uptake rate.The ratios of anoxic P-uptake to total P-uptake were 46.12%,32.03% and 21.96% for glucose,acetate and propionate,respectively,when the initial anaerobic COD concentration was 400 mg·L^-1.

• Key words：aerobic P-uptake  anoxic P-uptake  carbon source  COD  HRT  rate of P-uptake  PAOs/DPB

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