【摘要】 为解决集约化水产养殖尾水污染物去除效率低、生态净化池占地大的技术难题，本研究构建了“电子泵”耦合生态沉床系统，通过优化碎石层厚度的关键参数，系统探究其对养殖尾水中碳、氮、磷的净化效能。通过对比生态沉床系统、开路系统与耦合系统，连续运行两个月并分析各系统处理效果及相关性。结果表明，当碎石层厚为15cm时，耦合系统净化效能更好。该系统对总有机碳（TOC）、总氮（TN）、硝氮、总磷（TP）的平均去除率分别达92.1%、89.4%、95.1%、62.4%，显著优于其他两组系统；系统最高电压稳定在210m V左右，TOC、TN、TP平均出水浓度分别为1.33mg·L^-1、0.59mg·L^-1、0.20mg·L^-1，均满足水产养殖尾水排放一级标准。相关性分析显示，碎石层厚度与TOC、TN、硝氮去除率及系统电压均呈显著正相关，耦合系统中电压与硝氮、TN去除率显著正相关，这一结果证实“电子泵”可通过强化反硝化过程提升净化效果。本研究为水产养殖尾水生态净化池的效能提升提供了新型技术支撑与参数优化方案。更多还原

【Abstract】 To address the technical challenges of low removal efficiency of pollutants in intensive aquaculture wastewater and large land occupation of ecological purification ponds, this study constructed an "electronic pump" coupled ecological submerged bed system. By optimizing the key parameter of the gravel layer thickness, the purification efficiency of the system for carbon, nitrogen, and phosphorus in aquaculture wastewater was systematically investigated. Through a comparison among the ecological submerged bed system, the open-circuit system, and the coupled system, the systems were continuously operated for two months, and the treatment effects and correlations of each system were analyzed. The results showed that when the gravel layer thickness was 15 cm,the purification efficiency of the coupled system was better. The average removal rates of total organic carbon（TOC）, total nitrogen（TN）, nitrate nitrogen, and total phosphorus（TP）of this system reached 92.1%, 89.4%,95.1%, and 62.4%, respectively, which were significantly superior to those of the other systems. The highest voltage of the system was stably around 210 mV. The average effluent concentrations of TOC, TN, and TP were 1.33 mg·L^-1,0.59 mg·L^-1, and 0.20 mg·L^-1respectively, all meeting the first-level discharge standard for aquaculture wastewater.The correlation analysis indicated that the gravel layer thickness was significantly positively correlated with the removal rates of TOC, TN, nitrate nitrogen, and the voltage. In the coupled system, the voltage was significantly positively correlated with the removal rates of nitrate nitrogen and TN, confirming that the "electronic pump" could enhance the purification effect by strengthening the denitrification process. This study provides new technical support and parameter optimization schemes for improving the efficiency of ecological purification ponds for aquaculture wastewater.更多还原