容积负荷对ABR-MBR工艺反硝化除磷性能的影响  

Effect of Volume Loading Rate(VLR) on Denitrifying Phosphorus Removal by the ABR-MBR Process

作　　者：吕亮[1,2] 尤雯 韦佳敏 吴鹏 沈耀良[1,2,3] 

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009 [2]江苏省水处理技术与材料协同创新中心,苏州215009 [3]江苏省环境科学与工程重点实验室,苏州215009

出　　处：《环境科学》2018年第1期239-246,共8页Environmental Science

基　　金：国家自然科学基金项目(51578353);江苏省自然科学基金项目(BK20160356);江苏省高校自然科学研究项目(16KJB610013);苏州科技学院科研基金青年项目(XKQ201504)

摘　　要：采用连续流ABR-MBR组合工艺处理生活污水,研究不同容积负荷(volume loading rate,VLR)对该工艺反硝化除磷性能的影响,获得最佳工艺参数.试验考察ABR进水容积负荷(以COD计,下同)分别为0.76、1.01、1.51和2.27 kg·(m^3·d)^(-1)时系统去碳脱氮除磷的性能,并在各ABR容积负荷条件下考察MBR容积负荷对MBR反应器硝化性能的影响.结果表明,在ABR进水容积负荷为1.51 kg·(m^3·d)^(-1)的条件下,系统A2隔室COD去除量最大,并在MBR容积负荷为0.462 kg·(m^3·d)^(-1)时,MBR反应器中实现了短程硝化,系统NH_4^+-N和TN去除率分别达到90%和72%以上,厌氧释磷量为7.41 mg·L^(-1),缺氧吸磷量达到15.42 mg·L^(-1),出水PO_4^(3-)-P浓度低于0.5 mg·L^(-1),这表明短程硝化更有利于强化ABR-MBR系统的反硝化除磷性能.The effect of volume loading rate（VLR） on denitrifying phosphorus removal was investigated in a continuous-flow ABRMBR combined process treating domestic wastewater to arrive at optimum process parameters.In the experiment,the VLR of the ABR was set at 0.76,1.01,1.51,and 2.27 kg·（m^3·d）^-1.The removal of carbon,nitrogen,and phosphorus in the system and the effect of the VLR in the MBR on nitrification performance were observed for each VLR of the ABR.The results showed that under the condition when the VLR of the ABR was 1.51 kg·（m^3·d）^-1,the amount of COD removal in the A2 chamber was the largest,and shortcut nitrification was achieved in the MBR when the VLR of the MBR was 1.51 kg·（m^3·d）^-1.Meanwhile,the removal efficiency of NH_4~＋-N and TN reached more than 90% and 72%,respectively,the anaerobic P-release and anoxic P-uptake were 7.41 mg·L^-1 and 15.42 mg·L^-1,respectively,and the concentration of PO_4^（3-）-P in effluent was lower than 0.5 mg·L^-1,which indicated that the shortcut nitrification was more conducive to strengthening the performance of denitrifying phosphorus removal in the ABR-MBR system.

关 键 词：ABR-MBR组合工艺 容积负荷 短程硝化 生活污水 反硝化除磷 

分 类 号：X703.1[环境科学与工程—环境工程]