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引用本文:赵安娜,冯慕华,郭萧,柯凡,潘继征,李文朝.沉水植物氧化塘对污水厂尾水深度净化效果与机制的小试研究.湖泊科学,2010,22(4):538-544. DOI:10.18307/2010.0409
ZHAO Anna,FENG Muhua,GUO Xiao,KE Fan,PAN Jizheng,LI Wenchao.Experimental study on tail water purification of wastewater plant with submerged macro-phyte oxidation ponds. J. Lake Sci.2010,22(4):538-544. DOI:10.18307/2010.0409
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沉水植物氧化塘对污水厂尾水深度净化效果与机制的小试研究
赵安娜1,2, 冯慕华1, 郭萧1,2, 柯凡1,2, 潘继征1, 李文朝1
1.中国科学院南京地理与湖泊研究所 南京 210008;2.中国科学院研究生院 北京 100049
摘要:
室外采用玻璃缸装置研究了抚仙湖常见的9种沉水植物氧化塘对澄江县污水厂尾水营养盐的去除效果及机制.结果表明:氧化塘中沉水植物的光合作用导致水体较高的DO和pH值,从而提高氧化塘总氮和总磷的去除率,但沉水植物叶片的腐烂分解则提高了水体氮磷的含量.沉水植物氧化塘对总氮和总磷的去除率分别介于19.44%-64.71%和28.13%-98.33%.沉水植物的直接吸收对总氮和总磷量去除的贡献比较低,占氧化塘总氮和总磷量的0.26%-1.54%和0.47%-1.77%.沉水植物氧化塘内DO、pH变化,促进了氮的降解及氧化还原分解,使其对氮的去除占氧化塘总氮量的30.71%-65.25%,而磷的去除则主要通过化学沉淀及基质吸附,占氧化塘总磷量的73.37%-93.34%.最终,选出蓖齿眼子菜、苦草、黑藻、金鱼藻和光叶眼子菜对氧化塘中氮磷具有较高的去除率.
关键词:  沉水植物氧化塘  尾水      抚仙湖
DOI:10.18307/2010.0409
分类号:
基金项目:国家重点基础研究发展规划“973”项目(2008CB418005);国家“863”计划项目(2006AA06Z325);国家水污染治理专项项目(2008ZX07101-007-05)资助
Experimental study on tail water purification of wastewater plant with submerged macro-phyte oxidation ponds
ZHAO Anna1,2, FENG Muhua1, GUO Xiao1,2, KE Fan1,2, PAN Jizheng1, LI Wenchao1
1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China;2.Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China
Abstract:
In the field of the wastewater plant in Chengjiang County,an experiment was carried out to investigate the effect and mechanism of nutrient removal in oxidation ponds which were planted by nine submerged macrophyte. The result showed that,pho-toeynthesis of submerged macrophytes in oxidation ponds induced the high level of water DO and pH which increased the removal effects of TN and TP,but the decomposition of submerged macrophyte leaves enhanced the content of TN and TP in the submerged macrophyte oxidation ponds.1'he removal rates of TN and TP in the ponds,19.44%一64. 71 % and 28. 13%一98. 33 % respec-lively. And the contributions of direct absorption by submerged macrophytes are low, which removed 0. 26%一1. 54% of TN and 0.47%一1. 77% of TP in the oxidation ponds. The change of DO and pH have promoted nitrogen degradation and redox decomposi-tion,which removed 30.71%一65. 25% of TN and 73. 37%一93.34%,while the removal TP was mainly ways of chemical depo-sition and substrate adsorption in the ponds. Finally,Motamgeton pectinatua, Vallisneria spiralia, HydriUa rxrticiUata, Ceratophyl-lum demersum and Motamgeton lucens are chosen as the ones which had high nitrogen and phosphorus removal rates in submerged macrophyte oxidation ponds.
Key words:  Submerged macrophyte oxidation pond  tail water  nitrogen  phosphorus  Lake Fuxian
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