| CAST工艺高温短程硝化的实现及其除磷性能 |
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| 引用本文： | 马娟,杨蕊春,俞小军,周猛,陈永志.CAST工艺高温短程硝化的实现及其除磷性能[J].环境科学,2019,40(3):1375-1381. |
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| 作者姓名： | 马娟 杨蕊春 俞小军 周猛 陈永志 |
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| 作者单位： | 兰州交通大学环境与市政工程学院,兰州730070;甘肃省污水处理行业技术中心,兰州730070;兰州交通大学环境与市政工程学院,兰州,730070 |
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| 基金项目： | 国家自然科学基金项目（51668033） |
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| 摘 要： | 以模拟废水为研究对象,考察了22、25、28℃这3个温度下CAST反应器内短程硝化的实现及其除磷性能.结果表明,不同温度下系统的TN去除均稳定在80%以上,且NH_4~+-N去除良好.当温度为22℃和25℃时系统内未观察到亚硝积累,除磷率为94. 3%和86. 9%,升高温度至28℃,反应器内亚硝积累率为87. 2%,实现稳定的短程硝化.此外,高温短程硝化阶段(28℃),系统释、吸磷能力较22℃和25℃均有所下降,且厌氧段释磷量/COD消耗量(P/C)比明显低于前两个阶段.然而,该温度条件下反应器除磷性能并未恶化,除磷率为68. 9%,说明进水碳源充足不仅能保证CAST工艺对TN的去除,同时可用于解毒NO_2~-以减弱其对聚磷菌的抑制.不同温度条件下的污泥吸磷小试发现,O_2、NO_3~-、NO_2~-均可作为电子受体进行吸磷,其中好氧吸磷速率高于以NO_3~-和NO_2~-为电子受体的反硝化吸磷速率,且以O_2和NO_3~-为电子受体的吸磷速率与温度呈负相关.
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| 关 键 词： | CAST反应器 高温 亚硝酸盐积累 短程硝化 除磷 |
| 收稿时间： | 2018/8/29 0:00:00 |
| 修稿时间： | 2018/9/12 0:00:00 |
Realization of Short-cut Nitrification in a CAST Process at High Temperature and Its Phosphorus Removal Performance |
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| MA Juan,YANG Rui-chun,YU Xiao-jun,ZHOU Meng and CHEN Yong-zhi.Realization of Short-cut Nitrification in a CAST Process at High Temperature and Its Phosphorus Removal Performance[J].Chinese Journal of Environmental Science,2019,40(3):1375-1381. |
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| Authors: | MA Juan YANG Rui-chun YU Xiao-jun ZHOU Meng and CHEN Yong-zhi |
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| Institution: | School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Sewage Treatment Industry Technical Center of Gansu Province, Lanzhou 730070, China,School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China,School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China,School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China and School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Sewage Treatment Industry Technical Center of Gansu Province, Lanzhou 730070, China |
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| Abstract: | |
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| Keywords: | cyclic activated sludge technology (CAST) reactor high temperature nitrite accumulation short-cut nitrification phosphorus removal |
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