生态浮床浮板遮光对氮磷去除效果的影响
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摘要
[目的]明确生态浮床浮板遮光对氮磷去除效果的影响。[方法]以黄花鸢尾、再力花、梭鱼草3种常用浮床植物为供试植物,通过静态模拟试验,研究了生态浮床浮板遮光对浮床氮、磷净化效果的影响。[结果]3种植物在浮板遮光条件下对总磷、氨氮的去除效果均优于无浮盘遮蔽的光照组,黄花鸢尾、再力花和梭鱼草浮床对总磷的去除效果分别高于光照组8.85%、23.64%和8.55%,对氨氮的去除效果均高于光照组10%左右。[结论]试验结果为生态浮床技术的研发和应用提供了理论依据。
[Objective] The aim was to clear the effect of floating shading in ecological floating bed system on removal of nitrogen and phosphorus.[Method] Static experiments were carried out to study whether the floating plate of ecological floating bed had an effect on pollutants removal capacity of the floating bed for eutrophication water. Three common species of aquatic plants( Iris pseudacorus Linn.,Pontederia cordata and Thalia dealbata) were used as floating bed plant to make a comparison of the removal capacities between the shading condition( using floating plate)and its control check groups( without floating plate). [Result] Compared with control check groups,the ecological floating beds under shading condition provided higher removal efficiency for both total phosphorus and ammonia nitrogen,increasing about 10% in terms of the removal capacity of ammonia nitrogen for all plant species. Compared to its control check groups,the removal efficiency of total phosphorus for the shading groups was increased by 8. 85% for Iris pseudacorus Linn,23. 64% for Pontederia cordata and 8. 55% for Thalia dealbata.[Conclusion]The results provide reference for development and application of floating shading technology.
[Objective] The aim was to clear the effect of floating shading in ecological floating bed system on removal of nitrogen and phosphorus.[Method] Static experiments were carried out to study whether the floating plate of ecological floating bed had an effect on pollutants removal capacity of the floating bed for eutrophication water. Three common species of aquatic plants( Iris pseudacorus Linn.,Pontederia cordata and Thalia dealbata) were used as floating bed plant to make a comparison of the removal capacities between the shading condition( using floating plate)and its control check groups( without floating plate). [Result] Compared with control check groups,the ecological floating beds under shading condition provided higher removal efficiency for both total phosphorus and ammonia nitrogen,increasing about 10% in terms of the removal capacity of ammonia nitrogen for all plant species. Compared to its control check groups,the removal efficiency of total phosphorus for the shading groups was increased by 8. 85% for Iris pseudacorus Linn,23. 64% for Pontederia cordata and 8. 55% for Thalia dealbata.[Conclusion]The results provide reference for development and application of floating shading technology.
引文
[1]张志勇,冯明雷,杨林章.浮床植物净化生活污水中N、P的效果及N2O的排放[J].生态学报,2007,27(10):4333-4341.
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[4]徐功娣,张增胜,韩丽媛,等.强化生态浮床与普通浮床对污染物净化效果对比研究[J].水处理技术,2010,36(4):93-96.
[5]徐欢,张勇,黄民生,等.梯级生态浮床系统处理黑臭河水除磷性能研究[J].华东师范大学学报(自然科学版),2011,57(1):119-125.
[6]张曼玉,赵欣欣,胡凯,等.湿地槽式生态浮床修复富营养化水体中的氮素污染物[J].节水灌溉,2015(5):63-65.
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[8]KRNER S,VERMAAT J E.The relative importance of Lemna gibba L.,bacteria and algae for the nitrogen and phosphorus removal in duckweedcovered domestic wastewater[J].Water research,1998,32(12):3651-3661.
[9]王剑虹,麻密.植物修复的生物学机制[J].植物学报,2000,17(6):504-510.
[2]孙连鹏,刘阳,冯晨,等.不同季节浮床美人蕉对水体氮素等污染物的去除[J].中山大学学报(自然科学版),2008,47(2):127-130.
[3]李伟,李先宁,曹大伟,等.组合生态浮床技术对富营养化水源水质的改善效果[J].中国给水排水,2008,24(3):34-38.
[4]徐功娣,张增胜,韩丽媛,等.强化生态浮床与普通浮床对污染物净化效果对比研究[J].水处理技术,2010,36(4):93-96.
[5]徐欢,张勇,黄民生,等.梯级生态浮床系统处理黑臭河水除磷性能研究[J].华东师范大学学报(自然科学版),2011,57(1):119-125.
[6]张曼玉,赵欣欣,胡凯,等.湿地槽式生态浮床修复富营养化水体中的氮素污染物[J].节水灌溉,2015(5):63-65.
[7]ZHU L D,LI Z H,KETOLA T.Biomass accumulations and nutrient uptake of plants cultivated on artificial floating beds in China's rural area[J].Ecological engineering,2011,37(10):1460-1466.
[8]KRNER S,VERMAAT J E.The relative importance of Lemna gibba L.,bacteria and algae for the nitrogen and phosphorus removal in duckweedcovered domestic wastewater[J].Water research,1998,32(12):3651-3661.
[9]王剑虹,麻密.植物修复的生物学机制[J].植物学报,2000,17(6):504-510.