[1]刘玉森,高明昌,孙绍芳,等.酵母菌强化磷酸铵镁结晶体系处理富磷污泥上清液[J].中国给水排水,2022,38(11):1-6.
　LIUYu-sen,GAOMing-chang,SUNShao-fang,et al.Yeast Induced Magnesium Ammonium Phosphorus Crystallization for Treatment of Phosphorus-rich Sludge Supernatant[J].China Water & Wastewater,2022,38(11):1-6.
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酵母菌强化磷酸铵镁结晶体系处理富磷污泥上清液

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第11期 页码: 1-6 栏目: 出版日期: 2022-06-01
Title:
Yeast Induced Magnesium Ammonium Phosphorus Crystallization for Treatment of Phosphorus-rich Sludge Supernatant
作者:
刘玉森1,2， 高明昌3， 孙绍芳1,2， 邱琪3， 邱立平1,2
（1.济南大学 土木建筑学院，山东 济南 250022；2.山东省功能材料水质净化工程技术研究中心，山东 济南 250022；3.济南大学 水利与环境学院，山东 济南 250022）
Author(s):
LIU　Yu-sen1，2， GAO　Ming-chang3， SUN　Shao-fang1，2， QIU　Qi3， QIU　Li-ping1，2
（1. School of Civil Engineering and Architecture， University of Jinan， Jinan 250022， China； 2. Shandong Province Functional Material Water Quality Purification Engineering Technology Research Center， Jinan 250022， China； 3. School of Water Conservancy and Environment， University of Jinan， Jinan 250022， China）
关键词:
酵母菌;  磷酸铵镁(MAP);  富磷上清液;  结晶产物
Keywords:
yeast;  magnesium ammonium phosphate (MAP);  phosphorus-rich supernatant;  crystalline products
摘要:
利用一株除磷酵母菌在除磷过程中表面形成局部富磷区域的现象，将其引入到结晶除磷中，开发了酵母菌诱导强化磷酸铵镁（MAP）结晶协同除磷新体系。以A2/O污泥浓缩池富磷上清液为处理对象，探究了pH、Mg/P、N/P、反应时间和搅拌强度对该体系除磷效能的影响，采用扫描电子显微镜能谱仪（SEM-EDS）、X射线衍射仪（XRD）分析结晶产物的形貌及晶型。结果表明，酵母菌诱导强化MAP结晶体系处理A2/O污泥浓缩池富磷上清液的最优参数如下：pH=10.0、Mg/P=2.0、N/P=2.0、反应时间=30 min、搅拌强度=300 r/min，出水磷浓度可低至1.71 mg/L，除磷率为97.14%。结晶产物分析结果表明，酵母菌分泌的大量 胞外聚合物（EPS）可以吸附废水中的PO43--P和Mg2+，在菌体周围形成富磷区域，进而以酵母菌为晶核形成MAP结晶产物，实现磷的去除与回收。
Abstract:
A high-efficient phosphorus removal yeast strain, which can form local phosphorus rich areas during phosphorus removal, was introduced into magnesium ammonium phosphate (MAP) crystallization process to carry out a new technology for phosphorus removal and recovery. The effects of pH, Mg/P, N/P, reaction time and stirring intensity on the treatment efficiency of the phosphorus-rich supernatant from A2/O sludge thickener were investigated, and the crystalline products were characterized through scanning electron microscope coupled with energy dispersive spectrometer (SEM-EDS) and X-ray diffraction (XRD). The results showed that the optimal parameters were as follows: pH of 10.0, Mg/P of 2.0, N/P of 2.0, reaction time of 30 min, stirring intensity of 300 r/min. The effluent phosphorus concentration was 1.71 mg/L, and the phosphorus removal rate was 97.14% under optimal conditions. The analysis of crystallized product suggested that yeast could secrete lots of extracellular polymeric substances absorbing phosphorus and magnesium ion to form phosphorus-rich areas around yeast. MAP crystallization products formed outside the yeast cell to realize phosphorus removal and recovery.

相似文献/References:

[1]高明昌,孙绍芳,邱琪,等.酵母菌在废水除磷中的机理与应用研究进展[J].中国给水排水,2021,37(10):41.
　GAO Ming-chang,SUN Shao-fang,QIU Qi,et al.Application and Mechanism of Yeast in Phosphorus Removal from Wastewater:An Overview[J].China Water & Wastewater,2021,37(11):41.

更新日期/Last Update: 2022-06-01