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引用本文:吴睿,张晓松,戴江玉,高光,汤祥明,陈丹.3种人工载体净化富营养化水体能力的比较.湖泊科学,2014,26(5):682-690. DOI:10.18307/2014.0505
WU Rui,ZHANG Xiaosong,DAI Jiangyu,GAO Guang,TANG Xiangming,CHEN Dan.Comparison of the abilities of three artificial substrates in purifying eutrophic waters. J. Lake Sci.2014,26(5):682-690. DOI:10.18307/2014.0505
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3种人工载体净化富营养化水体能力的比较
吴睿1, 张晓松2, 戴江玉3, 高光4, 汤祥明4, 陈丹1
1.环境保护部南京环境科学研究所, 南京 210042;2.江苏省核与辐射安全监督管理局, 南京 210019;3.水利部交通运输部国家能源局南京水利科学研究院水文水资源与水利工程科学国家重点实验室, 南京 210029;4.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008
摘要:
通过野外模拟实验,对比3种不同理化性状人工载体(立体填料、生物绳和尼龙纱网)净化太湖梅梁湾富营养化水体的能力,并探讨影响人工载体水质净化能力的生物与非生物因素.结果表明:(1)所选择的3种人工载体均能显著降低水体的浊度,其中尼龙纱网处理组中水体浊度下降了94.2%,其单位质量载体净化量最高(36.18 NTU/g);(2)与对照组相比,各人工载体处理组中,水体中藻类的生长都受到极显著抑制;(3)3种人工载体对水体中TN、TP的去除效果差异极显著,其对TN累积去除率分别为25.55%、10.21%、51.54%,对TP累积去除率分别为38.93%、38.33%、62.98%;(4)载体理化性状、附着藻类与细菌的生物量和活性、挂载量以及载体上溶解态营养盐的释放是影响人工载体水质净化能力的重要因素.综上,尼龙纱网因具备单位质量附着生物的生物量与活性高、自身滞留溶解态营养盐少以及质量轻且价格经济等优势成为净化富营养化水体较为理想的人工载体.
关键词:  富营养化  氮磷  人工载体  附着生物  水质净化  太湖  梅梁湾
DOI:10.18307/2014.0505
分类号:
基金项目:国家水体污染控制与治理科技重大专项项目(2012ZX07101-010);国家自然科学基金项目(51309156)联合资助
Comparison of the abilities of three artificial substrates in purifying eutrophic waters
WU Rui1, ZHANG Xiaosong2, DAI Jiangyu3, GAO Guang4, TANG Xiangming4, CHEN Dan1
1.Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, P. R. China;2.Jiangsu Regulatory Bureau of Nuclear and Radiation Safety, Nanjing 210019, P. R. China;3.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, P. R. China;4.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
Abstract:
The abilities of three artificial substrates (solid filler, bio-cord and nylon gauze) on purifying the eutrophic waters were compared in relation to the biotic and abiotic influencing factors based on a field microcosm experiment in Meiliang Bay of Lake Taihu. The results were as follows:(1) all of the three artificial substrates could significantly reduce the water turbidity. In comparison, water turbidity of the nylon gauze treatment group decreased by 94.2%, which was the highest decrease by per unit mass substrate (36.18 NTU/g); (2) comparing with the control group, the growth of algae in all three treatment groups were significantly inhibited; (3) the removal amounts of total nitrogen and phosphorus by the artificial substrates were significantly different among the three treatment groups respectively, with a 25.55%, 10.21%, 51.54% accumulative removal of total nitrogen, and a 38.93%, 38.33%, 62.98% accumulative removal of total phosphorus for the solid filler, bio-cord and nylon gauze, respectively; and (4) substrate physicochemical characteristic, biomass and activity of periphytic algae and bacteria, substrate quantity, and the releasing of dissolved nutrients attached on substrates are the key factors affecting the abilities of artificial substrates to purify eutrophic waters. In conclusion, nylon gauze has advantages over the other two substrates with high biomass and microbial activity by per unit mass periphyton, less dissolved nutrients attached on itself, lighter weight and cheaper price. Hence we suggest that nylon gauze is an ideal artificial substrate in purifying eutrophic waters.
Key words:  Eutrophication  nitrogen and phosphorus  artificial substrate  periphyton  water purification  Lake Taihu  Meiliang Bay
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