• 关键词：生物膜序批式反应器（BSBR）工艺  磷回收  蓄磷量  低碳源  厌氧释磷

• 基金项目：国家自然科学基金（No.51778390，51938010）；江苏省重点研发计划项目（No.BE2021658）

• 温林霄
• 苏州科技大学环境科学与工程学院，苏州 215009

• 潘杨
• 苏州科技大学环境科学与工程学院，苏州 215009;城市生活污水资源化利用技术国家地方联合工程实验室，苏州 215009

• 陈越
• 苏州科技大学环境科学与工程学院，苏州 215009

• 张星宇
• 苏州科技大学环境科学与工程学院，苏州 215009

• 摘要：基于生物膜序批式反应器（BSBR）工艺，对模拟城市污水中的磷酸盐进行高效去除、回收.实验在探究不同蓄磷量和碳源对反应器效能、磷回收效率影响的基础上，进一步分析了两者的共同作用对厌氧释磷速率和释磷量的影响.结果表明，在反应器低碳源投加（仅厌氧投加200 mg·L^-1）和低磷进水（10 mg·L^-1）工况下，磷回收液浓度随着蓄磷量增加而增大，磷回收液浓度最高可达到225.5 mg·L^-1，蓄磷量可达159.6 mg·g^-1；同时探究了磷回收液浓度与平均磷回收效率间的关系，在以（6±1） d为回收周期的循环下，磷富集液浓度达到（106.6±10） mg·L^-1，此时平均磷回收效率为78.62%±2.3%；而且提高3.6倍蓄磷量可提高1.9倍释磷量，较之4倍碳源投加量时的1.79倍释磷量更为高效.因此，本反应器能基于更低碳源投加量获取高浓度磷回收液，从而为未来废水处理厂中磷的回收提供新的方向.

• Abstract：In this research， high-efficiency removal and recovery of phosphate in simulated urban sewage was achieved with biofilm sequencing batch reactor （BSBR） process. Based on the effects of different phosphorus storage and carbon sources on reactor performance and phosphorus recovery efficiency， the experiment further analyzed the combined action of these two factors on the anaerobic phosphorus release rate and phosphorus release. The results showed that the phosphorus concentration in recovery solution was positively correlated with the phosphorus accumulation under the condition of low carbon feeding （200 mg·L^-1 anaerobic feeding only） and low phosphorus influent （10 mg·L^-1） in the reactor. The highest phosphorus concentration of 225.5 mg·L^-1 was obtained， and the phosphorus storage amount was up to 159.6 mg·g^-1. The equilibrium relationship between the phosphorus concentration in recovery solution and average phosphorus recovery efficiency was also investigated. Under the harvesting cycle of （6±1） days， the phosphorus concentration in enrichment solution reached （106.6±10） mg·L^-1， and the average phosphorus recovery efficiency was 78.62%±2.3%. 3.6 times of phosphorus accumulation lifting can improve 1.9 times of phosphorus release， while 4 times of carbon source injection lifting just improve 1.79 times of phosphorus release. Therefore， this reactor can obtain high phosphorus concentration in enrichment solution with low carbon source feeding， thus providing a new direction for phosphorus recovery in wastewater treatment plants in the future.

• Key words：biofilm sequencing batch reactor （BSBR） process  phosphorus recovery  phosphorus storage  low carbon source  anaerobic phosphorus release

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