| 引用本文: | 刘谨瑞,Abdul Rahim Junejo,刘 绕,等.时序调控微纳米气泡与超声协同降解养殖废水复合污染物的机制研究[J].灌溉排水学报,2026,45(5):110-116. |
| LIU Jinrui,ABDUL Rahim Junejo,LIU Rao,et al.时序调控微纳米气泡与超声协同降解养殖废水复合污染物的机制研究[J].灌溉排水学报,2026,45(5):110-116. |
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| 摘要: |
| 【目的】探究微纳米气泡与超声波在时序调控下的协同作用机制。【方法】通过设计对照组（CK）、单一纳米气泡对照组（NA）、单一超声波对照组（UL）、超声与微纳米气泡同步处理（NAUL）、先纳米气泡处理-后超声波处理（NA-UL）、先超声波处理-后纳米气泡处理（UL-NA）6种时序组合处理，分析不同处理对气泡特性（粒径、数量、Zeta电位）及污染物去除效果的影响。【结果】NA-UL处理显著改善了气泡特性，中值粒径降至121 nm，溶解氧浓度提升118.62%，污染物去除效果明显增强，铬去除率达90.72%，锌去除率为43.12%，化学需氧量和五日生化需氧量去除率分别为32.78%和35.2%，粪大肠杆菌灭活率为60.26%，总磷、总钾和总氮的去除主要依靠气泡界面吸附及高溶解氧驱动的生物转化。【结论】时序调控是微纳米气泡与超声波协同作用的关键，为养殖废水复合污染物治理提供了高效低耗的新方案。 |
| 关键词: 微纳米气泡；超声波；复合污染物；羟基自由基；养殖废水 |
| DOI：10.13522/j.cnki.ggps.2025290 |
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| Mechanistic insights into the synergistic degradation of aquaculture wastewater by micro-nano bubbles and ultrasound |
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LIU Jinrui, ABDUL Rahim Junejo, LIU Rao, ZHANG Jinqiao, NIU Wenquan
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Mechanistic insights into the synergistic degradation of aquaculture wastewater by micro-nano bubbles and ultrasound
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| Abstract: |
| 【Objective】Micro-nano bubbles (MNBs) and ultrasound have attracted increasing attention in wastewater treatment due to their ability to enhance mass transfer, generate reactive species, and promote pollutant degradation. However, the synergistic mechanisms between these technologies under different application sequences remain poorly understood. The objective of this paper is to investigate the synergistic effects of MNBs and ultrasound under different application sequences.【Method】The experiment consisted of six treatments: a control (CK), applying micro-nano bubble alone (NA), applying ultrasound alone (UL), simultaneous application of micro-nano bubbles and ultrasound (NAUL), and two sequential applications: NA-UL and UL-NA. The influence of each treatment on the size, concentration and zeta potential of MNB, as well as the removal efficiency of composite pollutants was measured and evaluated.【Result】Among all treatments studied, the NA-UL sequential treatment was the most effective. It significantly optimized bubble characteristics, reducing the median diameter to 121 nm and increasing the dissolved oxygen concentration by 118.62% compared with the control. In this treatment, chromium and zinc removal efficiencies reached 90.72% and 43.12%, respectively, and chemical oxygen demand and five-day biochemical oxygen demand removal rates reached 32.78% and 35.20%, respectively, and fecal coliform inactivation reached 60.26%. The removal of total phosphorus, total potassium and total nitrogen was primarily attributed to their interfacial adsorption by micro-nano bubbles and biologically mediated transformations enhanced by elevated dissolved oxygen concentration.【Conclusion】Temporal regulation of micro-nano bubbles and ultrasound can improve their synergistic performance. The results indicate that the NA-UL sequence is the most energy-efficient strategy for enhancing the treatment of complex pollutants in aquaculture wastewater recycling systems. |
| Key words: micro-nano bubbles; ultrasonic wave; compound pollutants; hydroxyl radical; aquaculture wastewater |
