中文关键词ABR-MBR工艺短程硝化反硝化除磷硝化液回流比 英文关键词ABR-MBR combined processshortcut nitrificationdenitrifying phosphorus removalNO_x^--N recycling ratio

作者	单位	E-mail
吕亮	苏州科技大学环境科学与工程学院, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009	lvliangniu@outlook.com
尤雯	苏州科技大学环境科学与工程学院, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009
张敏	苏州科技大学环境科学与工程学院, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009
吴鹏	苏州科技大学环境科学与工程学院, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009 江苏省环境科学与工程重点实验室, 苏州 215009
沈耀良	苏州科技大学环境科学与工程学院, 苏州 215009 江苏省水处理技术与材料协同创新中心, 苏州 215009 江苏省环境科学与工程重点实验室, 苏州 215009	ylshen@mail.usts.edu.cn

中文摘要 基于ABR工艺与MBR工艺的耦合联动，以低C/N比生活污水为研究对象，构建生物相分离、液相循环和功能联动的ABR-MBR新型组合工艺，以实现稳定、高效、节能的多功能生物除污（去碳-脱氮-除磷）为目标，通过优化水力停留时间（HRT）以获得ABR优质碳源提供与MBR短程硝化实现的最佳组合，并进行了硝化液回流比为100%、200%、300%和400%时对反硝化除磷的影响研究.ABR-MBR耦合工艺在不同条件下的运行研究结果表明，将溶解氧（DO）维持在低浓度（0.3~1.0 mg ·L^-1）下及HRT维持在较短（HRT_MBR=3 h）情况下在MBR中实现了短程硝化，亚硝酸盐积累率达到60%以上；随着硝化液回流比的增大，ABR中反硝化除磷效能先升高后下降，以300%时反硝化除磷效果为最佳，此时亦处于MBR短程硝化阶段，实现了短程反硝化除磷（主要以NO₂^-作为电子受体的反硝化除磷），且短程反硝化除磷在系统除磷中占据了主导作用. 英文摘要 Based on the coupling of the ABR process and the MBR process, a novel combined ABR-MBR process, including biophase separation, liquid circulation, and functional linkage, was developed to achieve simultaneous carbon, nutrient, and phosphorus removal when treating domestic wastewater with low carbon/nitrogen ratio and to obtain the best combination of ABR, providing a quality carbon source, and MBR, achieving shortcut nitrification by optimizing hydraulic retention time (HRT). The influence of NO_x^--N recycling ratio on nitrogen and phosphorus removal was investigated at NO_x^--N recycling ratios of 100%, 200%, 300%, and 400%, respectively. The experimental results under different conditions showed that the efficiency of denitrifying phosphorus removal in the ABR was found to increase with increasing NO_x^--N recycling ratio from 100% to 300% but decreased when the NO_x^--N recycling ratio was 400%. Shortcut nitrification was achieved by controlling the low dissolved oxygen (DO) concentration ranges from 0.3 to 1.0 mg·L^-1 with the short HRT of 3 h in the MBR reactor. The nitrite accumulation ratio was above 60%, when the NO_x^--N recycling ratio was 300%. Meanwhile, shortcut denitrifying phosphorus removal (where NO₂^--N mainly acted as the electron acceptor for denitrifying phosphorus removal) was achieved and played the dominant role in phosphorus removal.

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