CAJ | 학술논문

[目的]该研究旨在使池塘循环水养殖系统中人丁湿地出水更加满足养殖水质要求。[方法]在长×宽X深为150m×0．5m×0．6m的养殖池塘排水沟内借助固着藻类反应器原理设计构建了生态沟渠，研究了生态沟渠对人工湿地出水溶氧恢复状况及深度净化效果。[结果]研究结果显示，人工湿地出水溶氧经过生态沟渠后显著提高至4．41～7．91131g／L，I）H值显著提高（P〈0．05）。在150m长度范围内，生态沟渠水中溶氧量随着沟渠长度的增加呈线性增加的趋势（P〈0．05）。生态沟渠对人工湿地出水中NH4＋-N、IMn和PO4^3-P等具有进一步去除效果，去除率分别达19．46％、13．38％和31．09％，对总大肠菌群的去除率范围在12．5％～78．13％。[结论]基于固着藻类反应器的生态沟渠能使人工湿地出水溶氧低的状况得到改善，N、P等物质得到进一步去除，可以作为与人工湿地配套的水回用系统。
[목적]해연구지재사지당순배수양식계통중인정습지출수경가만족양식수질요구。[방법]재장×관X심위150m×0．5m×0．6m적양식지당배수구내차조고착조류반응기원리설계구건료생태구거，연구료생태구거대인공습지출수용양회복상황급심도정화효과。[결과]연구결과현시，인공습지출수용양경과생태구거후현저제고지4．41～7．91131g／L，I）H치현저제고（P〈0．05）。재150m장도범위내，생태구거수중용양량수착구거장도적증가정선성증가적추세（P〈0．05）。생태구거대인공습지출수중NH4＋-N、IMn화PO4^3-P등구유진일보거제효과，거제솔분별체19．46％、13．38％화31．09％，대총대장균군적거제솔범위재12．5％～78．13％。[결론]기우고착조류반응기적생태구거능사인공습지출수용양저적상황득도개선，N、P등물질득도진일보거제，가이작위여인공습지배투적수회용계통。
[Objective] This study aimed to make the effluent of constructed wetlands in a pond recirculating aquaculture system satisfy aquaculture requirements. [Method] A 150 m long, 0.5 m wide and 0.6 m deep ecological ditch was constructed on the basis of the periphyton reactor theory, to investigate the reoxygenation and deep purification effect of the ecological ditch on the effluent of constructed wetlands. [Result] Experimental results showed that the level of dissolved oxygen (DO) in the effluent of constructed wetlands increased to a range of 4.41-7.91 mg/L and pH val- ue increased significantly by flowing though the ecological ditch (P〈0.05). DO level in the water of ecological ditch increased linearly with the increasing length of the ecological ditch within the range of 150 m (P〈0.05). The ecological ditch showed further removal effect on NH4+-N, IMn and PO4^3 -P in the effluent of the constructed wetlands, with the removal rate of 19.46%, 13.38% and 31.09%, respectively. The total coliform group was also eliminated with the removal rate ranging between 12.5% and 78.13%. [Conclusion] The ecological ditch based on periphyton reactor could improve DO level and further reduce N and P contents in the effluent of the constructed wetlands, which could be used as a matching water-reuse system of constructed wetlands. Key words Water quality; Purification; Dissolved oxygen; Periphyton; Pond aquaculture