| 低强度超声波强化低温SMBR脱氮的性能与机制研究 |
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| 引用本文： | 丁驰,付磊,王珍珍,尹建新,张金娜.低强度超声波强化低温SMBR脱氮的性能与机制研究[J].环境科学与管理,2014(6):91-93,117. |
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| 作者姓名： | 丁驰 付磊 王珍珍 尹建新 张金娜 |
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| 作者单位： | [1]黑龙江省城市规划设计研究院,黑龙江哈尔滨150090 [2]大连龙岛化工有限公司,辽宁大连116000 [3]山东省滨化集团股份有限公司设备动力部,山东滨州256602 [4]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 |
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| 基金项目： | 国家自然科学基金项目（51208142） |
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| 摘 要： | 考察了低温条件下低强度超声波对SMBR脱氮的强化作用,并研究了对硝化细菌脱氢酶活性和细胞通透性的影响。结果表明,经超声波强化后,SMBR对NH3-N5的去除效果得到明显提高,总去除率由启动完成时的65.94%升至84.01%,且长期运行稳定,说明超声波解除了低温对硝化作用的抑制。0.28 W/L超声波辐照20 min,可使硝化细菌脱氢酶活性提高81.19%,0.14 W/L的超声波辐照10 min使脱氢酶活性提高43.18%。0.28 W/L的超声功率密度对脱氢酶的活性提高程度最大,因此是较合适的超声波参数。
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| 关 键 词： | SMBR 低强度超声波 脱氮 脱氢酶活性 |
Performance and Mechanisms of Submerged Membrane Bioreactor for Low -Temperature Removal of Nitrogen Enhanced by Low -Density Ultrasound |
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| Ding Chi,Fu Lei,Wang Zhenzhen,Yin Jianxin,Zhang Jinna.Performance and Mechanisms of Submerged Membrane Bioreactor for Low -Temperature Removal of Nitrogen Enhanced by Low -Density Ultrasound[J].Environmental Science and Management,2014(6):91-93,117. |
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| Authors: | Ding Chi Fu Lei Wang Zhenzhen Yin Jianxin Zhang Jinna |
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| Institution: | 1. Heilongjiang Province Urban Planning Surveying Design and Research Institute, Harbin150090, China; 2. Dalian DragonIsland Chemical Co. , Ltd. , Dalian 116000, China; 3. Equipment Department of Befar Group Co. Ltd. , Binzhou 256602, China ; 4. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China) |
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| Abstract: | This study investigates the performance and mechanisms of submerged membrane bioreactor for low -temperature removal of nitrogen enhanced by low - density ultrasound, and the impact of ultrasound to dehydrogenase activity and cell permeability of the nitrifier. The results show that the SMBR could achieve an improved stable removal of ammonia - nitrogen, accounting for increase in removing efficiency from 65.94% to 84. 01%. This indicates the low -density ultrasound dismissed the inhibition to nitrification by low temperature, accomplishing comparable removal with that obtained at room temperature. Irradiation with 0. 28W/L ultrasound for 20 min could increased the dehydrogenase activity by 81.19%, while the dehydrogenase activity was only increased by 43. 18% following irradiation with 0. 14W/L ultrasound for 10 min. Thus, 0. 28W/L ultrasound was selected to optimize the ammonia- nitrogen removal in low- temperature SMBR system. |
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| Keywords: | SMBR low - density ultrasound denitrification dehydrogenase activity |
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