底泥疏浚,Sediment dredging
1)Sediment dredging底泥疏浚
1.Research on variety of plankton community prior and post sediment dredging in Nanhu Lake,Changchun;底泥疏浚前后长春南湖浮游生物群落变化研究
2.Sediment dredging can effectively lower the contents of nutrient,heavy metals and persistent organic pollutants in sediment,but resuspensiou of sedi- ment during dredging will induce the release of pollutants from sediment to the water column.底泥疏浚的效果至今仍存在很大争议,其中之一是疏浚后所产生的环境效果有可能偏离人们的期望,疏浚能够有效的削减沉积物中营养物、重金属和持久性有机物等污染物含量,但疏浚过程中会引起污染物向水体释放,疏浚后的界面过程有可能对疏浚效果产生较大影响,底泥疏浚对水体富营养化的控制有成功的经验也有失败的教训,不同的湖泊疏浚后对营养盐释放的控制效果不同。
3.Results show that the water quality of Nanhu lake in Changchun is significantly improved after sediment dredging from 2000 to 2002,and the indices of water quality in water lily area even reach or approach to the third level of GB3838-2002.结果显示,南湖在经过2000~2002年的底泥疏浚治理后,水质状况有了显著的改善,特别是荷花区水域的一些监测指标已经达到或接近GB 3838—2002Ⅲ类水体标准值;但游泳区和湖心区的水质仍表现出富营养化,水体中TP,TN超标现象较为严重。
英文短句/例句
1.Influence of Dredging on Suzhou Creek Ecology System苏州河底泥疏浚对围隔中水生生态系统的影响
2.Impact on Water Environment in Polluted Seriously Rivers in Suzhou by Different Dredging Degree;苏州重污染河道底泥疏浚程度对水环境的影响
3.Environmental effect of sediment dredging in lake: Ⅱ. the role of sediment dredging in reducing internal nitrogen release湖泊底泥疏浚环境效应:Ⅱ.内源氮释放控制作用
4.Environmental effect of sediment dredging in lake(Ⅰ):the role of sediment dredging in reducing internal phosphorous release湖泊底泥疏浚环境效应：Ⅰ.内源磷释放控制作用
5.The Ecological Effects of the Sediment Dredging and Dilution on Shallow Urban Eutrophic Lake;底泥疏浚和引水工程对小型浅水城市富营养化湖泊的生态效应
6.Environmental effect of sediment dredging in lake: Ⅲ. Influence of dredging on denitrification in sediments湖泊底泥疏浚环境效应:Ⅲ.对沉积物反硝化作用的影响
7.Study on the Release Laws of Phosphorous and Nitrogen from the Sediment in Dredged Lake, Nanhu;南湖疏浚后底泥氮、磷释放规律研究
8.A Study on Environmental Impact Assessment of Environmental Dredging Engineering in Lakes and Reservoirs湖库污染底泥环保疏浚工程环评要点探讨
9.ASSESSMENT METHOD FOR ENVIRONMENTAL SECURITY OF CONFINED DISPOSAL FACILITIES FOR CONTAMINATED DREDGED SEDIMENTS污染湖泊疏浚底泥堆场的环境安全性评价
10.Research on Transport Rule of Dredged Sludge Contaminant Through Clay Impermeable Layer;疏浚底泥污染物在粘土防渗层中的运移规律研究
11.Phytoremediation of Heavy Metal-Organic Complex in Dredged Sewage River Sediment;植物修复重金属—有机物复合污染河道疏浚底泥的研究
12.Environmental Dredging and Recycling for the Sediment in Pollution Surface Water面向污染水体的底泥环保疏浚技术与资源化利用
13.hydraulic dredging用吸扬式挖泥船挖泥疏浚
14.The channel of the river will fill up with mud if not regularly dredged.河道如果不定期疏浚，就会积满淤泥。
15.Design of a Small Dredging Simulator of Cutter Suction Dredger;绞吸式挖泥船小型疏浚仿真器的设计
16.Drag-suction dredger 3D view system耙吸式挖泥船疏浚作业三维显示系统
17.Research Progress on the Dewatering Technologies for Environmental Dredge Sediment环保疏浚泥浆脱水干化技术研究进展
18.The overflow dredging method is predominantly used to dredge silt and, generally, only with outgoing tide.溢流疏浚法主要且于疏浚泥沙，一般只利用退潮来进行。
相关短句/例句
dredged sediment疏浚底泥
1.Some approaches to utilizedredged sediment as resource,such as land utilization,producting construction material and fill material and wastewater treatment material,were analysed.介绍了疏浚底泥资源化利用的途径,对其土地利用、作建筑材料和填方材料及污水处理材料等资源化利用进行了可行性分析。
2.Ferric trichloride and PAM were used to dewater thedredged sediment.采用三氯化铁(FeCl3)和聚丙烯酰胺(PAM)作为河流疏浚底泥的脱水药剂。
3.Dredged sediment which is composed of upland soil enriched with nutritive organic matters could be used beneficially as soil amendments or manufactured soil for horticultural use rather than discarded as spoil material.疏浚底泥具有陆地土壤的基本理化性质,富含植物生长所需的各种营养物质,可以用作土壤改良剂或人造土壤,应用于园林绿化。
3)dredged sewage river sediment疏浚底泥
1.Pot experiments were conducted to study the physiological and ecological effect ofdredged sewage river sediment on horticultural plants — Lolium multiflorum Lam.通过温室盆栽试验,考察了将天津市大沽排污河疏浚底泥应用于园林绿地后,其对景观园林植物———黑麦草、紫花苜蓿生理特性的影响以及植物对重金属的积累和对有机物的降解情况,并对重金属在土壤中的迁移特性及其对地下水的潜在危害进行了评价。
2.This is a part of a subject " study on the sludge disposal and the reclamation in the urbandredged sewage river sediment (serial number of project: 043111811)".众所周知,受污染河道疏浚底泥中含有大量的污染物,尤其是重金属、有机物等污染物的严重超标,是限制底泥资源化的主要因素。
4)Dredged sludge疏浚底泥
1.Characteristic of nutrients and polluting chemistryin dredged sludge;疏浚底泥的养分特征及污染化学性质研究
5)environmental sludge dredging底泥环保疏浚
1.However,there are widespread disputes on the effects ofenvironmental sludge dredging.底泥环保疏浚是控制湖泊富营养化的重要措施,然而,对于底泥环保疏浚的效果却存在着较大的争论。
6)sediment environmental dredging底泥环境疏浚
延伸阅读
疏浚疏浚dredging为疏通、扩宽或挖深河湖等水域，用人力或机械进行水下土石方开挖的工程。广义的疏浚包括用水下爆破法进行的炸礁、炸滩等。人工开挖只适用于可断流施工的小河流。机械施工广泛使用各类挖泥船，有时也用索铲等陆上施工机械。机械疏浚始于1600年，在荷兰鹿特丹港施工中出现链斗式挖泥船的雏形。中国于1889年开始在黄浦江用挖泥船施工。1929年江南造船厂造成链斗式挖泥船。20世纪80年代初期，中国拥有年开挖约3亿立方米的机械疏浚能力。疏浚工程广泛应用于：①开挖新航道、港口和运河。②浚深、加宽和清理现有航道和港口。③疏通河道、渠道，水库清淤。④开挖码头、船坞、船闸等水工建筑物基坑。⑤结合疏浚进行吹填造地、填海等工程。⑥清除水下障碍物。
