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污染物

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The every 100 ton new material can adsorb various types of 300-500 tons of pollutants.

本新型材料每100吨可以吸附300-500吨的各类污染物,经过生物机制降解可循环使用处理更多量和多种的污染物

These air-breathing organisms are not dependent on high and are generally pollution tolerant, and can therefore live easily in water of poor quality

污染物敏感的微生物仅见于急速流动的冰凉的溪水中,因为溪水中污染物很少,溶解氧较高。

According to data based on inspection research which was carried out from 2003 to 2005,in the area of sea estuary (ZhangJiang Estuary,DongXi Estuary) and the alongshore sea area,we have done a series of analysis and research on the impacts of the effluents from the coastline estuary to the water eutrophication of the alongshore sea area.

根据2003~2005年对福建省漳州市入海河口和近岸海域的监测调查资料,分析研究了入海河口污染物输入对近岸海域水体富营养化的影响,结果表明:河流陆源的有机、氮、磷污染物入海通量越大,所对应的近岸海域海水水质越差,富营养化趋势越明显

The spatial spread of cattail community primarily was the result of the gradual accumulation of contaminations and nutrients in water and soil, and the important reason why the removal efficiency of contaminations declines can be found in the decrease of wetland area.

香蒲群落在空间上的扩展,主要是水和土壤中污染物和营养逐渐积累的结果,湿地面积的减少是污染物去除效率下降的重要原因。

And the optimum pH was 4-6 for the dechlorination reaction of 2,4-D, and pH between 2 and 8 were all suited for the reaction in Pd/Fe systems. Intermediate and final products of 2,4-D, HCH and chlordane with Pd/Fe were determined by GC/MS, and the possible dechlorination pathways were concluded: 2,4-D can be converted to phenoxyacetic acid through gradual hydrogenolysis, and HCH can be transformed to cyclohexatriene through dichloroelimination or dehydrochlorination.

通过GC/MS定性定量分析了三种目标污染物在Pd/Fe体系中发生还原脱氯反应过程中的反应物及最终产物,并根据反应产物推测分析了这三种有机污染物在催化还原反应体系中可能的反应途径:2,4-D主要通过逐级氢解最终生成彻底脱氯产物苯氧乙酸;而六六六则可能通过逐步双氯消除反应或脱氯化氢反应,最后生成环己三烯。

The number of light duty gasoline vehicles account for half of number of motor vehicles.

轻型汽油车辆占西安市机动车总量的一半左右,其排放污染物的多少直接对城市环境质量产生影响,因此研究轻型汽油车辆排放污染物对城市环境中该种污染物的贡献率对排放的控制,政策法规的制定和交通环境的改善都有极为重要的意义。

Meanwhile, by modeling the sewage diffusion, it is found that the range of the Changjiang Estuary sewage diffusion area can reach the East Chongming Bank, the Deep water Channel, and the Nanhui Bank, while the COD concentration near Meimaosha is especially high so that the sewage diffusion constitutes a threat to the water quality of Meimaosha area.

同时,通过对污染物扩散的数值模拟,本文发现长江口污染物的扩散范围能够到达崇明东滩、深水航道和南汇边滩,而没冒沙附近区域的COD浓度更是尤其地高,所以污染物扩散对没冒沙地区的水质也形成了一定的威胁。

The main fi ndings were i copper was strongly bound to organic layer and seemed to be the main pollutant in the ecosystem while zinc was the most mobile element and did not accumulate to any specifi c part of the ecosystem, ii the forest mosses and epiphytic lichens were the most sensitive plant species and the seedlings of the vascular plants that had survived near the smelter were absent, iii there was a highly resistant soil decomposer community near the smelter although the activity of the soil animals and microbiota was low and their community structure altered, iv many insect species also suffered from pollution although the adverse effects caused by forest pests increased with pollutant load, v the low survival rate and breeding success of hole-nesting passerines near the smelter was caused by habitat changes and the quality of food, vi the adverse effects seem to be to some extent reversible after decreased pollutant load or remediation actions.

主要fi ndings是i铜强烈一定到有机层数、并且似乎是主要污染物在生态系、当锌是最流动的元素,并且没有积累对生态系时的任何specifi c零件, ii森林青苔和附生植物地衣是含羞草种类,并且在精炼工附近生存了是缺席维管束植物的幼木, iii有一个高度抗性土壤decomposer社区在精炼工附近、虽然土壤动物和microbiota的活动是低的、并且他们的修改过的社区结构、iv许多昆虫种类也遭受污染、虽然森林造成的不利影响虫增加了与污染物装载、v孔嵌套雀形目鸟的低生存率和繁殖的成功在精炼工附近是由栖所变动造成的,并且食物的质量, vi不利影响似乎在某种程度上是双面布料在减少的污染物装载或治疗行动以后。

Based on the water environment spatial data mining and visualization method, the paper presents these main characteristics and innovations:①Measurement of contamination fluxes:A scene-based research strategy is proposed:measurement /water quality analysis→flow field simulation→contamination transformation rule→fluxes scene simulation→temporal-spatial rule analysis.②Serial numerical models of water environment in the Qiantang River:The controlled equations of the flow field model of the main river,united controlled equations of the main contamination fluxes and water quality prediction model at emergent time are set up.③GIS-based water quality and contamination fluxes decision-making assistance system:A water environment database has been set up;based on MapX and C#.net platform,a system has been developed to facilitate visual inquiry,decision-making and graphics export.

本文基于水环境空间数据挖掘与可视化的研究方法与体系,研究中的主要特色与创新点为:①河流污染物通量测算的技术与方法:提出了基于工况测量/水质分析→流场模拟→污染规律解析→通量情景模拟→时空规律分析的研究方案;②钱塘江水环境模拟系列数学模型:建立了钱塘江干流研究区域流场数学模型的控制方程、主要污染物通量模型的联合控制方程、突发污染事故水质预报模型的基本方程;③基于GIS的水质预报与污染物通量决策支持系统的研发:建立水环境时空数据库,基于MapX和C#。net平台进行系统的构建与开发,为研究的系列成果提供可视化的查询、决策与图形输出。

This Waste water containing tar, phenol, ammonia, cyanide, benzene, pyridine, quinoline and indole dozens of other pollutants, it is very complex and is high concentrations of pollutants, it is color, toxicity and stable, after biological treatment,there are still a large number of non-degradable organic pollutants, it is a typical example of intractable industrial wastewater.

焦化废水是煤在高温干馏过程中以及煤气净化、化学产品精制过程中形成的废水,其中含有焦油、酚、氨氮、氰、苯、吡啶、吲哚和喹啉等几十种污染物,其水量大,成分复杂,污染物浓度高、色度高、毒性大,性质稳定,经生化处理后,仍有大量难降解的有机污染物,是一种典型难处理的工业废水。

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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

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