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Search Results: 1 - 10 of 251990 matches for " br>聂志丹 "
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Influence of the conditions of batch flow on treating eutrophicated
间歇式运行对人工湿地处理富营养化湖水的影响

Nie Zhidan,NianYuegang,JinXiangcan,SongYingwei,<br>志丹,年跃刚,金相灿,宋英伟
环境工程学报 , 2007,
Abstract: 针对五里湖富营养化水体,进行了中试规模人工湿地间歇式运行与连续式运行处理效果的比较研究,现场试验采用0.8 m3/m2·d的水力负荷.研究表明,采用间歇进水方式增强了人工湿地的复氧能力,出水溶解氧(DO)含量为2.6~4.5 mg/L,较连续进水方式平均提高了51.06%.间歇式进水对TN和NH4 -N的去除影响较大,与连续进水方式相比去除率分别提高了51.5%和30.5%;而对NO3-N、TP和CODMn的去除影响较小.采用间歇式运行TN的出水浓度较连续式运行稳定,受季节变化和进水浓度的影响较小,出水浓度<2 mg/L;而间歇式运行对TP和CODMn出水浓度的稳定性影响不大.
Effects of substrates and plants on pollution removal of constructed wetlands
人工湿地中基质与植物对污染物去除效率的影响

Song Yingwei,Nian Yuegang,Huang Minsheng,Nie Zhidan,<br>宋英伟,年跃刚,黄民生,志丹
环境工程学报 , 2009,
Abstract: The pilot-scale constructed wetlands with different substrates and plants were built to treat eutrophic Wuli Lake.The slag and zeolite were selected as substrates.Zizania caduciflora was planted in one wetland,and Iris pseudacorus & Acorus calamus was planted in another.Meanwhile,there is a wetland without any plants growing as a comparison.The results show that the differences of the removal rates for the TN between slag substrates and zeolite substrates is 12.5% in the initial stages,and it is 12.6% for T...
Petrological and geochemical characteristics, Ar-Ar geochronology study and their tectonic significance of Triassic volcanic rocks in southern Lancangjiang zone
澜沧江南带三叠纪火山岩岩石学、地球化学特征、Ar-Ar年代学研究及其构造意义

WANG Shuo,DONG GuoChen,MO XuanXue,ZHAO ZhiDan,ZHU DiCheng,KONG HuiLei,WANG Xia,NIE Fei,<br>王硕,董国臣,莫宣学,志丹,朱弟成,孔会磊,王霞,
岩石学报 , 2012,
Abstract: Triassic volcanic rocks are widespread in southern Lancangjiang zone of Sanjiang area. Middle-Late Triassic volcanic sequences exposed in full in Yunxian area in the north of southern Lancangjiang zone, can be divided into three formations as Middle Triassic Manghuai Formation (T2m), Late Triassic Xiaodingxi Formation (T3x) and Late Triassic Manghuihe Formation (T3mh) from the bottom to up. Acid volcanics mainly erupted in Manghuai Formation, formed a rhyolite and pyroclastic rock assemblage. Xiaodingxi Formation developed basic-intermediate lavas mixed with pyroclastic rocks. Rhyolite pyroclastic rocks and basalt coexist in Manghuihe Formation, showed "bimodal" volcanic features. Geochemical characteristics indicate that Triassic volcanic rocks from southern Lancangjiang zone have dual characteristics of arc volcanic rocks and continental intraplate volcanic rocks, suggesting that their formation environment is transition-type continental margin orogenic belts. Ar-Ar dating is carried on quartz andesite collected from Jinghong in the south of southern Lancangjiang zone and yields the plateau age of 236.7±2.2Ma, which belong to Middle Triassic. With the dating results, the main collision stage of Lancang River is inferred in Early Triassic. Middle Triassic and early Late Triassic are respectively the stress relaxation stage after collision and continued subduction stage of oceanic basin. Until the end of Late Triassic, subduction ended, Lancang River Ocean closed.
Pilot-Scale Comparison Research of Different Constructed Wetland Types to Treat Eutrophic Lake Water
3种类型人工湿地处理富营养化水体中试比较研究

NIE Zhi-dan,NIAN Yue-gang,JIN Xiang-can,SONG Ying-wei,LI Lin-feng,XIE Ai-jun,<br>志丹,年跃刚,金相灿,宋英伟,李林锋,谢爱军
环境科学 , 2007,
Abstract: Comparison research of different constructed wetland types to treat lake Wulihu water was carried out. Under the condition of the loading rates 0.8 m3/(m2·d), the removal efficiencies of the vertical flow wetland(VFW), subsurface flow wetland(SFW) and free surface wetland(FSW) had the following results: To ammonia nitrogen (NH+4-N) the average removal rates were 33.2%, 27.4% and 14.1%, respectively; To total nitrogen (TN) the average removal rates were 52.3%, 50.1% and 19.2%, respectively; To total phosphorus (TP) the average removal rates were 58.8%, 57.9% and 26.3%, respectively; To permanganate index the average removal rates were 37.2%, 38.3% and 14.8%, respectively; To chlorophyll a (Chl-a) the average removal rates were 86.9%, 96.1% and 55.3%, respectively. Obviously, VFW and SFW are more effective than FSW at treating eutrophicated water such as Lake Wulihu which with characters of low organically pollution and with high nitrogen and phosphorus pollution, and the VFW is the most effective on the removal of NH+4-N, TN and TP. SFW is the most effective on the removal of permanganate index and Chl-a. The effluent stability of VFW is better than SFW, and the SFW is better than FSW.
人工湿地中基质与植物对污染物去除效率的影响
宋英伟,年跃刚,黄民生,志丹
环境工程学报 , 2009,
Abstract: 针对太湖五里湖富营养化水体,采用中试规模的人工湿地现场实验开展了不同基质、不同植物的污染物去除效果研究。基质采用炉渣和沸石2种,在一个湿地池种植单一植物茭白,另一个湿地池种植鸢尾+菖蒲混合植物,同时构建了无植物的对照组湿地。研究表明:(1)在运行初期,沸石和炉渣2种基质对TN、TP的去除率差异为12.5%和12.6%,吸附饱和后,2种基质对TN和TP的去除率差异缩小为3.2%和6.1%,从长期运行来看,炉渣和沸石2种基质在人工湿地中的去除效率差异将减小;(2)茭白单一植物湿地对污染物的去除率与鸢尾+菖蒲混合植物湿地对污染物的去除率两者之间差异不大;(3)人工湿地种植植物后对TN、TP的去除率比无植物状态时分别高出13.6%和19.5%,植物在人工湿地中对污染物的去除发挥了重要作用;(4)在本试验条件下,茭白吸收所去除的氮数量为湿地氮总去除量的8.95%,茭白吸收去除磷的数量为湿地磷总去除量的20.16%,在人工湿地中,茭白吸收对磷的去除效率比对氮的去除效率高。
间歇式运行对人工湿地处理富营养化湖水的影响
志丹,年跃刚,金相灿,宋英伟
环境工程学报 , 2007,
Abstract: 针对五里湖富营养化水体,进行了中试规模人工湿地间歇式运行与连续式运行处理效果的比较研究,现场试验采用0.8m3/m2·d的水力负荷。研究表明,采用间歇进水方式增强了人工湿地的复氧能力,出水溶解氧(DO)含量为2.6~4.5mg/L,较连续进水方式平均提高了51.06%。间歇式进水对TN和NH+4-N的去除影响较大,与连续进水方式相比去除率分别提高了51.5%和30.5%;而对NO3-N、TP和CODMn的去除影响较小。采用间歇式运行TN的出水浓度较连续式运行稳定,受季节变化和进水浓度的影响较小,出水浓度<2mg/L;而间歇式运行对TP和CODMn出水浓度的稳定性影响不大。
Research of Aeration with Bio-film Technology to Treat Urban Landscape Water
城市景观水体曝气与生物膜联合净化技术研究

SONG Ying-wei,NIE Zhi-dan,NIAN Yue-gang,HUANG Min-sheng,HUANG Jian-jun,YAN Hai-hong,ZHANG Yang,<br>宋英伟,志丹,年跃刚,黄民生,黄建军,闫海红,张扬
环境科学 , 2008,
Abstract: Research of the Aeration with Bio-film Technology was carried out to the treat scenic water of a sanatorium in Beijing. The aim of the research was improving the water habitat by increasing the transparency and reducing the concentration of N and P. The equipments were setted in a 5000m2 water area, which combined the plugflow jet areator with the Elastic Biological filler. The research indicated that the transparency was increased from 25cm to 120cm by the technology. The removal efficiencies of TP, NH4+-N and NO3-N were 86.6%, 90% and 73.3%, but there was only 22.4% for TN removal efficiency. The concentration of DO was increased from 4.3mg/L to 7mg/L. In a word, the Aeration with Bio-film Technology was an effective measure to improve the water habitat by increasing the transparency.
3种类型人工湿地处理富营养化水体中试比较研究
志丹,年跃刚,金相灿,宋英伟,李林锋,谢爱军
环境科学 , 2007,
Abstract: 针对五里湖富营养化水体,在同等条件下开展了3种类型人工湿地处理效果的比较研究,试验采用现场中试规模,水力负荷为0.8m3/(m2·d).结果表明,垂直流、潜流和表面流3种人工湿地对氨氮的平均去除率分别为33.2%、27.4%和14.1%;对总氮的平均去除率分别为52.3%、50.1%和19.2%;对总磷的平均去除率分别为58.8%、57.9%和26.3%;对锰酸盐指数的平均去除率分别为37.2%、38.3%和14.8%;对叶绿素a的平均去除率分别为86.9%、96.1%和55.3%.可见,垂直流人工湿地对氨氮、总氮和总磷的去除效果最好,潜流人工湿地对高锰酸盐指数和叶绿素a的去除效果最好,但垂直流和潜流人工湿地之间的差异较小,表面流人工湿地对各污染物的去除效果均远低于前两者.从出水水质稳定性来看,垂直流人工湿地出水水质最稳定,潜流次之,表面流最差.
城市景观水体曝气与生物膜联合净化技术研究
宋英伟,志丹,年跃刚,黄民生,黄建军,闫海红,张扬
环境科学 , 2008,
Abstract: 为提高城市景观水体的透明度,降低水体中的营养盐含量,改善水生态系统恢复的生境条件,将水体曝气与生物膜复合净化技术应用于北京某疗养院5000 m2景观水体,研究该技术提高水体透明度和降低水体中营养盐的效果,曝气方式采用新型的推流型射流曝气机,生物膜载体采用弹性生物膜填料.研究显示,该技术能使水体透明度从25cm提高到了120cm;水体中总氮(TN)、氨氮(NH+4-N)、硝氮(NO-3-N)、总磷(TP)的含量分别降低了22.4%、86.6%、90%和73.3%;水体底部溶解氧(DO)含量由4.3mg/L增加到7mg/L左右.环境水体透明度的提高为恢复水生态系统创造了有利条件,表明水体曝气与生物膜复合净化技术是景观水体水生态系统生境改善的有效措施.
中西文化比较的方法论再思考 Rethinking of Methodology in Comparison of Chinese and Western Culture
敏里#br#
- , 2018,
Abstract: 摘要 西学东渐百余年来,中西文化比较在中国思想者这里通常的路径不外乎是以下三种:中体西用、西体中用和中西互为体用。但是,所有这些路径在突出中西文化异质性的同时,都忽略了文化比较的时间性。而当将中西的问题正确地置于古今的视野中时,我们将发现中西文化作为古代文化类型或现代文化类型彼此相通、相近的地方。中西文化比较可以以展现中西文化的差异为重点,但同样也可以以展现中西文化的相同为重点。
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